EP3473949A1 - Demisting installation for a hot-water heating circuit - Google Patents

Demisting installation for a hot-water heating circuit Download PDF

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Publication number
EP3473949A1
EP3473949A1 EP18290010.0A EP18290010A EP3473949A1 EP 3473949 A1 EP3473949 A1 EP 3473949A1 EP 18290010 A EP18290010 A EP 18290010A EP 3473949 A1 EP3473949 A1 EP 3473949A1
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EP
European Patent Office
Prior art keywords
heating circuit
valve
water
control system
defoaming device
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Granted
Application number
EP18290010.0A
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German (de)
French (fr)
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EP3473949B1 (en
EP3473949C0 (en
Inventor
Valéry Bogos
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Individual
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Individual
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Publication of EP3473949C0 publication Critical patent/EP3473949C0/en
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    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the present invention relates to a de-watering installation for a hot water heating circuit of a building, as well as a method of operation of this de-watering installation.
  • the hot water heating circuits of any building whose internal temperature is to be regulated generally comprise a closed water circuit comprising a boiler, a circulation pump and radiators which, arranged in different rooms of said building, receive the flow of water. hot water distributed by the boiler to dissipate calories. Different regulating means make it possible to adjust the flow rates in each radiator according to the heating required in the rooms.
  • a type of known heating circuit cleaning machine presented in particular by the document EP-A1-1099488 published on May 16, 2001 , carries on a trolley a product tank a water-propelling pump containing such a product and two simultaneous-controlled three-way valves.
  • the pump By connecting the cleaning machine to the heating circuit, the pump propels the cleaning water containing the defoamer into the entire circuit.
  • the two simultaneous-controlled three-way valves make it easy to reverse the flow direction of the cleaning water with a single control, making it possible to act more effectively on deposits in certain locations. circuit, to dissolve and train them.
  • the cleaning machine in question may also comprise a sludge pot, which then receives the passage of the cleaning water in order to allow the sludge to settle inside and to be able to recover, for example with magnets, the metallic particles. circulating in this fluid.
  • Rinsing water is then circulated to remove traces of the defoamer.
  • This type of machine equipped with two three-way valves allows, after a single connection to the heating circuit, the two directions of fluid flow and rinsing, and without having to disconnect and reconnect pipes, this which would have the disadvantage of asking for time and could lead to dripping and soiling in the workspace.
  • Another known method of cleaning a heating circuit uses a cleaning machine comprising a pump, providing a propulsion of cleaning water in one direction, then after various inversion maneuvers, in the other direction, and an air injection system which continuously adds or by jerks of air under pressure in the fluid. Air bubbles moving in the heating circuit create mechanical stresses that help detach and suspend deposits in this circuit.
  • the machines can make it possible to control the flow rate of the fluid in the heating circuit, in particular by adjusting the speed of the pump.
  • this equipment does not provide the use of check valves allowing it to operate in reverse fluid circulation by an immediate and simple switching.
  • the present invention is intended to avoid these disadvantages of the prior art.
  • a de-wetting installation provided to be connected to two ends of a hot water heating circuit, comprising a means for circulating a cleaning water between these ends, to reverse the direction of circulation in the heating circuit, comprising an air injection system in the cleaning water, and comprising two control systems each arranged respectively at one end of the heating circuit, this installation being remarkable in that each control system is equipped with pressure gauge giving pressure at each end of the heating circuit, and comprises a non-return valve allowing the fluid to pass towards this end.
  • An advantage of this de-wetting system is that the manometers make it possible to continuously check the pressure applied in the heating circuit, for circulation in one direction or the other, which makes it possible to adjust this pressure, in particular by adjusting the pressure delivered by a circulation pump or by the air injection system, in order to avoid incidents due to overpressure.
  • the non-return valve on each control system makes it possible, without the intervention of an operator, particularly when the direction of circulation in the heating circuit is reversed, to inject air without the risk of causing a return of air.
  • fluid in the cleaning water circulation means, or in other power sources such as the boiler of the heating circuit is also possible.
  • the defoamer according to the invention may further comprise one or more of the following features, which may be combined with each other.
  • each control system comprises an air injection valve for injecting air at each end of the heating circuit.
  • the pressure gauges may include means for automatically detecting a pressure threshold.
  • each control system comprises a locking valve arranged in parallel with each non-return valve.
  • each control system may include an isolation valve for the supply of both the shut-off valve and the non-return valve.
  • each control system comprises, for each end of the heating circuit, a safety valve.
  • the installation comprises an air compressor that can inject air alternately towards one or the other of the two ends of the heating circuit, between the non-return valve and the end connected to this control system.
  • the installation comprises an air compressor integrated in a pump for circulating the cleaning water.
  • the installation may comprise an inversion block connected on the one hand to the two control systems, and on the other hand to an outlet supplying pressurized water to the heating circuit, and to a return receiving the water. of this circuit of this heating, comprising means for reversing the connection of the output and the return.
  • the inversion block comprises four flow reversal valves, each disposed between on the one hand a conduit, and on the other hand the output return.
  • the defoamer installation may comprise a pump delivering the cleaning water under pressure at the outlet and receiving this water through the return.
  • the invention also relates to a method of operating a de-gassing installation comprising any one of the preceding characteristics, which alternates the flow direction of the cleaning water in the heating circuit.
  • the method performs an injection of air in a jerky manner.
  • the figure 1 has a heating circuit of a building 2 to defuse, comprising radiators arranged in series between an upstream connection end 6, receiving hot water from a boiler, and a downstream end connection end 8, these ends representing the start and the return of this heating circuit.
  • radiators 4 of the heating circuit 2 to be de-fogged are represented, this circuit can thus, among other things, include a boiler or other equipment connected to the upstream and downstream ends 6 .
  • the defoamer installation comprises a propulsion pump connected to a closed circuit comprising in series: a first conduit 12, a first control system 14, the heating circuit 2 entering through the upstream end 6 and exiting through the end downstream 8, a second control system 16, and finally a second conduit 18 returning to the pump.
  • the pump 10 can control a circulation of cleaning or rinsing water in both directions of the closed circuit.
  • the pump 10 may optionally include a debudging pot 38, with an automatic connection means on the return duct of the closed circuit arriving on this pump, in order to recover the sludge coming from the heating circuit 2 during cleaning.
  • the defoam pot 38 may be disposed outside the pump 10, with valves automatically reversing the connections on the pump in the direction of flow, to dispose this pot systematically on the return line of the circuit.
  • Each control system 14, 16 comprises, coming from the first conduit 12 or the second conduit 18, an isolation valve 20, then a first three-way connection 30 which supplies a non-return valve 22 allowing only the flow coming from the isolation valve, and blocking the other direction, and in parallel a blocking valve 24.
  • the nonreturn valve 22 and the blocking valve 24 are then connected to a second three-way connection 32 which supplies the upstream end 6, or respectively the downstream end 8, of the heating circuit 2.
  • Each control system 14, 16 is furthermore provided with a pressure gauge 26 and a safety valve 28.
  • Each pair consists of a pressure gauge 26, comprising a display dial in the example shown, and a safety valve 28 calibrated at three bars is arranged in series, respectively between each second three-way connection 32 and the connecting end 6 or, according to, 8 of the heating circuit 2.
  • the two safety valves 28 of the two control systems 14, 16 constitute with their calibration pressure a security adapted to the mechanical strength of the heating circuit 2, in order to evacuate the fluid in case of overpressure towards a low discharge duct pressure 34 which is advantageously connected to a sewer 64.
  • the pressure gauges 26 it should be understood here that, under the term “manometers”, is meant for all the description of the present application that it is generally devices for measuring a pressure mechanical or electronic, such as simple manometers, pressure sensors, pressure transmitters, pressure transducers, etc ... some of which convert the measured pressure into an analog or digital output signal. In these latter cases, it can be envisaged that the measuring apparatus concerned would also be able to send a control signal to the isolation valve 20 to close it in the event that the pressure measured by said apparatus becomes greater than three bars. .
  • the pump 10 also has a connection 36 to the exhaust duct 34, so that it can optionally drain a cleaning or rinsing water after its use throughout the circuit.
  • An air compressor 40 supplies an air injection valve 42 located on each control system 14, 16, between the non-return valve 22 and the second three-way connector 32, in order to inject air. under pressure in the cleaning water, upstream side in the direction of circulation in the heating circuit 2, to accompany this water through this circuit.
  • the operation of the de-wetting facility is as follows, the two isolation valves 20 being open.
  • the blocking valve 24 of the first control system 14 is closed, and that of the second control system 16 is opened.
  • Operation of the pump 10 supplying the first duct 12 circulates the fluid successively in the nonreturn valve 22 of the first control system 14, then in the heating circuit 2, and then in the blocking valve 24 of the second control system. control 16.
  • the nonreturn valve 22 of the second control system 16 is then operational, that is to say closed for this direction of circulation.
  • the fluid then returns via the second conduit 18 to the pump 10, passing through the defoaming pot 38.
  • compressed air is injected by the compressor 40 to the inlet of the heating circuit 2, by opening the air injection valve 42 of the first control system 14, possibly by saccades. , in order to cause mechanical shocks that help to detach and circulate the sludge.
  • the direction of circulation is reversed.
  • the shut-off valve 24 of the second control system 16 is closed, the first control system 14 is opened, and the pump 10 is controlled to deliver the flow of water in the opposite direction to the previous one. that is to say on the second duct 18.
  • Air is injected by opening the air injection valve 42 of the second control system 16.
  • the closed defoaming circuit recycles the cleaning water for a certain number of circulations, and thus limits its consumption.
  • the pressure gauges 26 make it possible to constantly monitor the rise in pressure in the heating circuit 2, in order to reduce or stop, if necessary, the pressure delivered by the pump 10.
  • the successive alternating circulations in the heating circuit 2 can take off. abruptly large amounts of material that could quickly obstruct the ducts or radiator outlets by raising the pressure. This ensures security.
  • the gauges 26 may comprise an electrical threshold detection sending a signal, for example sound or visual, to indicate an overpressure.
  • the two pressure gauges 26 make it possible to monitor the maximum pressure on both sides of the heating circuit 2 during the defoaming operations in order to avoid any accident.
  • an automatic shutdown of the pressure rise can be carried out in the case of an electric threshold detection pressure gauge. This particularly protects circuits with plastic pipes of the type high density crosslinked polyethylene "PER", which have a lower pressure resistance.
  • the pressure difference between the inlet and the outlet of the heating circuit 2, indicated by the difference between the two gauges 26, may constitute a means of measuring the flow resistance in this circuit, and therefore an indicator of the degree of slugging of the circuit.
  • the manometer 26 disposed on the output side of the heating circuit 2 in particular makes it possible to detect leakage or tearing in this heating circuit, by measuring a sudden and significant drop in pressure.
  • each control system 14, 16 makes it possible automatically to avoid, during a pressure rise of the circuit, in particular during the injection of air, a rise of fluids towards the inlet duct. from the pump 10. It is thus possible to reverse the direction of flow coming from the pump 10, with the valve of the other control system 14, 16 which then operates automatically without manual intervention, to protect the other inlet of the pump. 'water.
  • the figure 2 alternatively presents a similar defoamer, which differs from the installation of the figure 1 in that it does not include an outdoor air compressor or an air injection valve 42 on each control system 14, 16.
  • the pump 10 comprises in this case an integrated air compressor 50, which injects air continuously or by jerks in the conduit 12, 18 constituting the departure of the cleaning water. In this way, the pump 10 automatically manages the air injection side following the departure of the cleaning water, through the conduit 12, 18, without having to intervene on this air circuit.
  • the figure 3 presents a second variant of the defoaming installation presented at figure 1 , comprising an external water supply 62 directly connected to the first conduit 12, the second conduit 18 being connected to a sewer 64 via the defoaming pot 38.
  • a circulation of water coming from the external supply 62 is made using the pressure of this supply network for propulsion. Water, having served a once in the heating circuit 2, is rejected in the sewer 64 after recovery of sludge.
  • the reversal of the flow direction of the cleaning water in the heating circuit 2 is done in this case after a manual reversal of the connections to the external water supply 62 and the sewer 64.
  • the air compressor 40 can be replaced by a traditional commercial apparatus, combining a pump for propelling water and an air compressor.
  • the invention consisting in the combination of the two control systems 14 and 16 with the air compressor 40 and the sanitary cold water distribution 62 very advantageously replaces the apparatus of the present state of the art.
  • the technique consist of a pump and an integrated compressor.
  • the figure 4 presents a third variant of the defoaming installation presented at figure 1 , comprising an inverting block 60 connected to the outlet of the pressurized water 72 and the return of this pressurized water 74 from the pump 10.
  • Each duct 12, 18 is connected to both the outlet 72 and the return 74, each time by a flow reversal valve 70.
  • Each flow reversal valve 70 may be manually controlled, or automated control.
  • the pump 10 is furthermore connected to an inlet coming from an external water supply 62, and to an outlet 36 going to the low-pressure discharge duct 34 connected to a sewer 64.
  • the defoamer 38 is installed on the outlet before the sewer 64. Alternatively the defogger pot 38 may be installed on one of the two ducts 12 or 18.
  • the inversion block 60 alternates the connections of the output of the pump 72 and its return 74, by opening two opposite flow reversal valves 70 and closing the other two, and alternately by reversing this maneuver, this is done quickly by simple manual or automatic control, without disconnecting the connection.
  • a circulation of water coming from the external supply 62 is made and then pressure is raised by the pump 10 in one direction or the other.
  • the return water 74 can be recycled by the pump 10 to be delivered through the outlet 72. After a number of cycles the water is discharged into the sewer 64 after recovery of the sludge.
  • the inversion block 60 can be integrated in the pump 10.
  • a pressure pump 10 can be dispensed with.
  • the air compressor 40 feeds each air injection valve 42 by a motorized air injection valve 76, to automatically perform a jerky flow of air according to a predefined program.
  • the pressure gauges 26 provide simple and effective safety.
  • the method according to the invention could be used for cleaning devices having two ends which allow the flow of the cleaning fluid between them in one direction, in the other direction, or in the two respectively alternating directions of the device to be cleaned.
  • the exhaust pipes of vehicles could constitute universal cleaning solutions using the method according to the invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treatment Of Sludge (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne une installation de désembouage prévue pour être raccordée à deux extrémités (6, 8) d'un circuit de chauffage par eau chaude (2), comportant un moyen de circulation d'une eau de nettoyage entre ces extrémités (6, 8), permettant d'inverser le sens de circulation dans le circuit de chauffage (2), comportant un système d'injection d'air (40, 50) dans l'eau de nettoyage, et comportant deux systèmes de commande (14, 16) disposés chacun respectivement à une extrémité (6, 8) du circuit de chauffage (2). Une installation conforme à l'invention est caractérisée en ce que chaque système de commande (14, 16) est doté d'un manomètre de pression (26) donnant la pression à chaque extrémité (6, 8) du circuit de chauffage (2), et comporte un clapet anti-retour (22) laissant passer le fluide vers cette extrémité (6, 8).The invention relates to a de-watering installation intended to be connected to two ends (6, 8) of a hot water heating circuit (2), comprising means for circulating a cleaning water between these ends (6, 8), for reversing the direction of flow in the heating circuit (2), having an air injection system (40, 50) in the cleaning water, and having two control systems (14, 16) each respectively disposed at one end (6, 8) of the heating circuit (2). An installation according to the invention is characterized in that each control system (14, 16) is provided with a pressure gauge (26) giving the pressure at each end (6, 8) of the heating circuit (2) , and comprises a non-return valve (22) allowing the fluid to pass towards this end (6, 8).

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

La présente invention concerne une installation de désembouage pour un circuit de chauffage par eau chaude d'un bâtiment, ainsi qu'un procédé de fonctionnement de cette installation de désembouage.The present invention relates to a de-watering installation for a hot water heating circuit of a building, as well as a method of operation of this de-watering installation.

ARRIÈRE-PLAN TECHNOLOGIQUE DE L'INVENTIONBACKGROUND OF THE INVENTION

Les circuits de chauffage par eau chaude de tout bâtiment dont il convient de réguler la température intérieure comportent généralement un circuit d'eau fermé comprenant une chaudière, une pompe de circulation et des radiateurs qui, disposés dans différentes pièces dudit bâtiment, reçoivent le flux d'eau chaude distribuée par la chaudière pour dissiper des calories. Différents moyens de régulation permettent d'ajuster les débits dans chaque radiateur suivant le chauffage nécessaire dans les pièces.The hot water heating circuits of any building whose internal temperature is to be regulated generally comprise a closed water circuit comprising a boiler, a circulation pump and radiators which, arranged in different rooms of said building, receive the flow of water. hot water distributed by the boiler to dissipate calories. Different regulating means make it possible to adjust the flow rates in each radiator according to the heating required in the rooms.

Avec le temps, il se forme des dépôts dans le circuit de chauffage, en particulier dans les différents radiateurs, comprenant du tartre, des résidus d'oxydation des métaux, et des boues diverses. Ces dépôts freinent la circulation d'eau et les échanges thermiques à certains endroits, ce qui réduit l'efficacité du chauffage et augmente le coût en énergie. De plus, la durée de vie des composants de l'installation peut être affectée par ces dépôts.Over time, deposits are formed in the heating circuit, particularly in the various radiators, including scale, oxidation residues of the metals, and various sludges. These deposits slow down the circulation of water and heat exchanges in certain places, which reduces the heating efficiency and increases the energy cost. In addition, the lifespan of the components of the installation can be affected by these deposits.

Pour cela, il est nécessaire de pratiquer périodiquement des opérations de désembouage du circuit de chauffage.For this, it is necessary to periodically perform defoaming operations of the heating circuit.

Un type de machine de nettoyage de circuits de chauffage connu, présenté notamment par le document EP-A1-1099488 publié le 16 mai 2001 , comporte sur un chariot un réservoir de produit de désembouage, une pompe de propulsion d'eau contenant un tel produit et deux vannes trois voies à commande simultanée.A type of known heating circuit cleaning machine, presented in particular by the document EP-A1-1099488 published on May 16, 2001 , carries on a trolley a product tank a water-propelling pump containing such a product and two simultaneous-controlled three-way valves.

En raccordant la machine de nettoyage sur le circuit de chauffage, la pompe propulse l'eau de nettoyage comportant le produit de désembouage dans l'ensemble du circuit. Les deux vannes trois voies à commande simultanée permettent d'inverser de manière simple, par une seule commande, le sens de circulation de l'eau de nettoyage, ce qui permet d'agir de façon plus efficace sur des dépôts se trouvant à certains endroits du circuit, pour les dissoudre et les entraîner.By connecting the cleaning machine to the heating circuit, the pump propels the cleaning water containing the defoamer into the entire circuit. The two simultaneous-controlled three-way valves make it easy to reverse the flow direction of the cleaning water with a single control, making it possible to act more effectively on deposits in certain locations. circuit, to dissolve and train them.

La machine de nettoyage en question peut également comporter un pot à boues, qui reçoit alors le passage de l'eau de nettoyage afin de laisser se décanter à l'intérieur les boues et de pouvoir récupérer, par exemple avec des aimants, les particules métalliques circulant dans ce fluide.The cleaning machine in question may also comprise a sludge pot, which then receives the passage of the cleaning water in order to allow the sludge to settle inside and to be able to recover, for example with magnets, the metallic particles. circulating in this fluid.

On fait circuler ensuite une eau de rinçage pour éliminer les traces du produit de désembouage. Ce type de machine équipée des deux vannes à trois voies permet de réaliser, après un unique branchement sur le circuit de chauffage, les deux sens de circulation du fluide ainsi que le rinçage, et ce sans avoir à débrancher et à rebrancher des tuyaux, ce qui aurait l'inconvénient de demander du temps et risquerait d'entraîner des coulures et des salissures dans l'espace de travail.Rinsing water is then circulated to remove traces of the defoamer. This type of machine equipped with two three-way valves allows, after a single connection to the heating circuit, the two directions of fluid flow and rinsing, and without having to disconnect and reconnect pipes, this which would have the disadvantage of asking for time and could lead to dripping and soiling in the workspace.

Un autre procédé connu de nettoyage de circuit de chauffage, présenté notamment par le document FR-A1-2752614 , utilise une machine de nettoyage comportant une pompe, réalisant une propulsion d'eau de nettoyage dans un sens, puis après diverses manoeuvres d'inversion, dans l'autre sens, et un système d'injection d'air qui ajoute de manière continue ou par saccades de l'air sous pression dans le fluide. Les bulles d'air se déplaçant dans le circuit de chauffage créent des contraintes mécaniques qui aident au décollement et à la mise en suspension des dépôts dans ce circuit.Another known method of cleaning a heating circuit, presented in particular by the document FR-A1-2752614 , uses a cleaning machine comprising a pump, providing a propulsion of cleaning water in one direction, then after various inversion maneuvers, in the other direction, and an air injection system which continuously adds or by jerks of air under pressure in the fluid. Air bubbles moving in the heating circuit create mechanical stresses that help detach and suspend deposits in this circuit.

Pour ce procédé connu, les machines peuvent permettre de contrôler le débit du fluide dans le circuit de chauffage, notamment en ajustant la vitesse de la pompe.For this known method, the machines can make it possible to control the flow rate of the fluid in the heating circuit, in particular by adjusting the speed of the pump.

Toutefois, on n'a pas d'indication sur la pression appliquée dans le circuit de chauffage, ce qui peut poser de réels problèmes en particulier avec la pression d'air injecté et, dans le cas d'obstruction plus ou moins importante d'éléments du circuit, notamment lorsque des dépôts importants se détachent d'un bloc et viennent colmater brutalement des passages du fluide.However, there is no indication of the pressure applied in the heating circuit, which can pose real problems especially with the injected air pressure and, in the case of more or less significant obstruction of elements of the circuit, especially when large deposits are detached from a block and come to brutally plug passages of the fluid.

De plus, il peut se présenter le cas d'une obstruction plus forte dans un sens de circulation de l'eau de nettoyage par rapport à l'autre, ce qui augmenterait la pression. Or, une pression trop élevée dans le circuit de chauffage peut entraîner des fissures ou des ruptures, en particulier au niveau de soudures ou de raccords, occasionnant des incidents tels que des inondations.In addition, there may be the case of a stronger obstruction in one direction of circulation of the cleaning water relative to the other, which would increase the pressure. However, too high a pressure in the heating circuit can lead to cracks or breaks, especially at welds or connections, causing incidents such as flooding.

En outre, ce matériel ne prévoit pas l'emploi de clapets anti-retour lui permettant de fonctionner en inversion de circulation de fluides par une commutation immédiate et simple.In addition, this equipment does not provide the use of check valves allowing it to operate in reverse fluid circulation by an immediate and simple switching.

DESCRIPTION GÉNÉRALE DE L'INVENTIONGENERAL DESCRIPTION OF THE INVENTION

La présente invention a notamment pour but d'éviter ces inconvénients de la technique antérieure.The present invention is intended to avoid these disadvantages of the prior art.

Elle propose à cet effet une installation de désembouage prévue pour être raccordée à deux extrémités d'un circuit de chauffage par eau chaude, comportant un moyen de circulation d'une eau de nettoyage entre ces extrémités, permettant d'inverser le sens de circulation dans le circuit de chauffage, comportant un système d'injection d'air dans l'eau de nettoyage, et comportant deux systèmes de commande disposés chacun respectivement à une extrémité du circuit de chauffage, cette installation étant remarquable en ce que chaque système de commande est doté d'un manomètre de pression donnant la pression à chaque extrémité du circuit de chauffage, et comporte un clapet anti-retour laissant passer le fluide vers cette extrémité.It proposes for this purpose a de-wetting installation provided to be connected to two ends of a hot water heating circuit, comprising a means for circulating a cleaning water between these ends, to reverse the direction of circulation in the heating circuit, comprising an air injection system in the cleaning water, and comprising two control systems each arranged respectively at one end of the heating circuit, this installation being remarkable in that each control system is equipped with pressure gauge giving pressure at each end of the heating circuit, and comprises a non-return valve allowing the fluid to pass towards this end.

Un avantage de cette installation de désembouage est que les manomètres permettent de vérifier en permanence la pression appliquée dans le circuit de chauffage, pour une circulation dans un sens ou dans l'autre, ce qui permet d'ajuster cette pression notamment en réglant la pression délivrée par une pompe de circulation ou par le système d'injection d'air, afin d'éviter des incidents dus à une surpression.An advantage of this de-wetting system is that the manometers make it possible to continuously check the pressure applied in the heating circuit, for circulation in one direction or the other, which makes it possible to adjust this pressure, in particular by adjusting the pressure delivered by a circulation pump or by the air injection system, in order to avoid incidents due to overpressure.

En particulier, lors de changements rapides du sens de circulation de l'eau de nettoyage, avec des injections d'air, sans manipulation complémentaire ni perte de temps, on a toujours un manomètre installé ainsi en permanence du côté amont, indiquant de manière précise la pression dans le circuit de chauffage, ce qui permet d'intervenir rapidement en cas de montée en pression trop forte pour éviter des incidents.In particular, during rapid changes in the direction of circulation of the cleaning water, with air injections, without additional manipulation or loss of time, there is always a manometer permanently installed on the upstream side, indicating precisely the pressure in the heating circuit, which makes it possible to intervene quickly in the event of pressure rise too high to avoid incidents.

De plus le clapet anti-retour sur chaque système de commande permet sans intervention d'un opérateur, en particulier lors d'inversion du sens de circulation dans le circuit de chauffage, d'injecter de l'air sans risquer de provoquer un retour de fluide dans le moyen de circulation d'eau de nettoyage, ou dans d'autres sources d'alimentation comme la chaudière du circuit de chauffage.In addition, the non-return valve on each control system makes it possible, without the intervention of an operator, particularly when the direction of circulation in the heating circuit is reversed, to inject air without the risk of causing a return of air. fluid in the cleaning water circulation means, or in other power sources such as the boiler of the heating circuit.

L'installation de désembouage selon l'invention peut en outre comporter une ou plusieurs des caractéristiques suivantes, qui peuvent être combinées entre elles.The defoamer according to the invention may further comprise one or more of the following features, which may be combined with each other.

Avantageusement, chaque système de commande comporte un robinet d'injection d'air pour injecter de l'air au niveau de chaque extrémité du circuit de chauffage.Advantageously, each control system comprises an air injection valve for injecting air at each end of the heating circuit.

En complément, les manomètres de pression peuvent comporter un moyen de détection automatique d'un seuil de pression.In addition, the pressure gauges may include means for automatically detecting a pressure threshold.

Avantageusement, chaque système de commande comporte un robinet de blocage disposé en parallèle de chaque clapet anti-retour.Advantageously, each control system comprises a locking valve arranged in parallel with each non-return valve.

De plus, chaque système de commande peut comporter un robinet d'isolement pour l'alimentation à la fois du robinet de blocage et du clapet anti-retour.In addition, each control system may include an isolation valve for the supply of both the shut-off valve and the non-return valve.

Avantageusement, chaque système de commande comporte, pour chaque extrémité du circuit de chauffage, une soupape de sécurité.Advantageously, each control system comprises, for each end of the heating circuit, a safety valve.

Selon un mode de réalisation, l'installation comporte un compresseur d'air pouvant injecter de l'air alternativement vers l'une ou l'autre des deux extrémités du circuit de chauffage, entre le clapet anti-retour et l'extrémité reliée à ce système de commande.According to one embodiment, the installation comprises an air compressor that can inject air alternately towards one or the other of the two ends of the heating circuit, between the non-return valve and the end connected to this control system.

Selon un autre mode de réalisation, l'installation comporte un compresseur d'air intégré dans une pompe de circulation de l'eau de nettoyage.According to another embodiment, the installation comprises an air compressor integrated in a pump for circulating the cleaning water.

En variante, l'installation peut comporter un bloc d'inversion relié d'une part au deux systèmes de commande, et d'autre part à une sortie délivrant une eau sous pression au circuit de chauffage, et à un retour recevant l'eau de ce circuit de ce chauffage, comprenant des moyens permettant d'inverser le branchement de la sortie et du retour.As a variant, the installation may comprise an inversion block connected on the one hand to the two control systems, and on the other hand to an outlet supplying pressurized water to the heating circuit, and to a return receiving the water. of this circuit of this heating, comprising means for reversing the connection of the output and the return.

Dans ce cas, avantageusement le bloc d'inversion comporte quatre vannes d'inversion de débit, disposées chacune entre d'une part un conduit, et d'autre part la sortie le retour.In this case, advantageously the inversion block comprises four flow reversal valves, each disposed between on the one hand a conduit, and on the other hand the output return.

En particulier, l'installation de désembouage peut comporter une pompe délivrant l'eau de nettoyage sous pression à la sortie et recevant cette eau par le retour.In particular, the defoamer installation may comprise a pump delivering the cleaning water under pressure at the outlet and receiving this water through the return.

L'invention a aussi pour objet un procédé de fonctionnement d'une installation de désembouage comprenant l'une quelconque des caractéristiques précédentes, qui alterne le sens de circulation de l'eau de nettoyage dans le circuit de chauffage.The invention also relates to a method of operating a de-gassing installation comprising any one of the preceding characteristics, which alternates the flow direction of the cleaning water in the heating circuit.

Avantageusement, pour chaque alternance de sens de circulation de l'eau de nettoyage, le procédé réalise une injection d'air de manière saccadée.Advantageously, for each alternating flow direction of the cleaning water, the method performs an injection of air in a jerky manner.

BRÈVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

Les spécifications détaillées de l'invention sont données dans la description qui suit en liaison avec les dessins ci-annexés. Il est à noter que ces dessins n'ont d'autre but que celui d'illustrer le texte de la description et qu'ils ne constituent donc en aucune sorte une limitation de la portée de l'invention.The detailed specifications of the invention are given in the following description in conjunction with the accompanying drawings. It should be noted that these drawings have no other purpose than that of illustrating the text of the description and that they therefore in no way constitute a limitation of the scope of the invention.

Dans ces dessins :

  • la figure 1 présente une installation de désembouage selon l'invention raccordée à un circuit de chauffage, comprenant une circulation fermée et un compresseur d'air extérieur ;
  • la figure 2 présente une installation de désembouage suivant une première variante comprenant une circulation fermée et un compresseur d'air intégré à la pompe de circulation ;
  • la figure 3 présente une installation de désembouage suivant une deuxième variante comprenant une circulation ouverte ; et
  • la figure 4 présente une installation de désembouage suivant une troisième variante comprenant une circulation ouverte et un bloc d'inversion des raccordements extérieurs.
In these drawings:
  • the figure 1 presents a dewatering installation according to the invention connected to a heating circuit, comprising a closed circulation and an external air compressor;
  • the figure 2 presents a defoamer installation according to a first variant comprising a closed circulation and an air compressor integrated in the circulation pump;
  • the figure 3 presents a dewatering installation according to a second variant comprising an open circulation; and
  • the figure 4 presents a defoamer installation according to a third variant comprising an open circulation and an inversion block of the external connections.

DESCRIPTION DES MODES DE RÉALISATION PRÉFÉRÉS DE L'INVENTIONDESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

La figure 1 présente un circuit de chauffage d'un bâtiment 2 à désembouer, comportant des radiateurs disposés en série entre une extrémité de raccordement amont 6, recevant l'eau chaude d'une chaudière, et une extrémité de raccordement aval 8 de sortie, ces extrémités représentant le départ et le retour de ce circuit de chauffage.The figure 1 has a heating circuit of a building 2 to defuse, comprising radiators arranged in series between an upstream connection end 6, receiving hot water from a boiler, and a downstream end connection end 8, these ends representing the start and the return of this heating circuit.

Dans les exemples suivants, dans un souci de simplification, seulement les radiateurs 4 du circuit de chauffage 2 à désembouer sont représentés, ce circuit pouvant donc, entre autres, comporter une chaudière ou d'autres équipements raccordés sur les extrémités amont 6 et aval 8.In the following examples, for the sake of simplification, only the radiators 4 of the heating circuit 2 to be de-fogged are represented, this circuit can thus, among other things, include a boiler or other equipment connected to the upstream and downstream ends 6 .

L'installation de désembouage comporte une pompe de propulsion 10 raccordée à un circuit fermé comprenant en série : un premier conduit 12, un premier système de commande 14, le circuit de chauffage 2 entrant par l'extrémité amont 6 et sortant par l'extrémité aval 8, un deuxième système de commande 16, et enfin un deuxième conduit 18 revenant sur la pompe.The defoamer installation comprises a propulsion pump connected to a closed circuit comprising in series: a first conduit 12, a first control system 14, the heating circuit 2 entering through the upstream end 6 and exiting through the end downstream 8, a second control system 16, and finally a second conduit 18 returning to the pump.

La pompe 10 peut commander une circulation d'eau de nettoyage ou de rinçage dans les deux sens du circuit fermé.The pump 10 can control a circulation of cleaning or rinsing water in both directions of the closed circuit.

La pompe 10 peut comporter en option un pot de désembouage 38, avec un moyen automatique de raccordement sur le conduit de retour du circuit fermé arrivant sur cette pompe, afin de récupérer les boues venant du circuit de chauffage 2 lors du nettoyage.The pump 10 may optionally include a debudging pot 38, with an automatic connection means on the return duct of the closed circuit arriving on this pump, in order to recover the sludge coming from the heating circuit 2 during cleaning.

En variante, le pot de désembouage 38 peut être disposé à l'extérieur de la pompe 10, avec des vannes inversant automatiquement les raccordements sur cette pompe suivant le sens de circulation, afin de disposer ce pot systématiquement sur le conduit de retour du circuit.Alternatively, the defoam pot 38 may be disposed outside the pump 10, with valves automatically reversing the connections on the pump in the direction of flow, to dispose this pot systematically on the return line of the circuit.

Chaque système de commande 14, 16 comporte, en venant du premier conduit 12 ou du deuxième conduit 18, un robinet d'isolement 20, puis un premier raccord trois voies 30 qui alimente un clapet anti-retour 22 laissant passer uniquement le flux venant du robinet d'isolement, et bloquant l'autre sens, et en parallèle un robinet de blocage 24.Each control system 14, 16 comprises, coming from the first conduit 12 or the second conduit 18, an isolation valve 20, then a first three-way connection 30 which supplies a non-return valve 22 allowing only the flow coming from the isolation valve, and blocking the other direction, and in parallel a blocking valve 24.

Le clapet anti-retour 22 et le robinet de blocage 24 sont raccordés ensuite à un deuxième raccord trois voies 32 qui alimente l'extrémité amont 6, ou respectivement l'extrémité aval 8, du circuit de chauffage 2.The nonreturn valve 22 and the blocking valve 24 are then connected to a second three-way connection 32 which supplies the upstream end 6, or respectively the downstream end 8, of the heating circuit 2.

Chaque système de commande 14, 16 est en outre doté d'un manomètre de pression 26 et d'une soupape de sécurité 28. Chaque couple constitué d'un manomètre de pression 26, comprenant un cadran d'affichage dans l'exemple représenté, et d'une soupape de sécurité 28 tarée à trois bars est disposé en série, respectivement entre chaque deuxième raccord trois voies 32 et l'extrémité de raccordement 6 ou, selon, 8 du circuit de chauffage 2.Each control system 14, 16 is furthermore provided with a pressure gauge 26 and a safety valve 28. Each pair consists of a pressure gauge 26, comprising a display dial in the example shown, and a safety valve 28 calibrated at three bars is arranged in series, respectively between each second three-way connection 32 and the connecting end 6 or, according to, 8 of the heating circuit 2.

Les deux soupapes de sécurité 28 des deux systèmes de commande 14, 16 constituent avec leur pression de tarage une sécurité adaptée à la résistance mécanique du circuit de chauffage 2, afin d'évacuer le fluide en cas de surpression vers un conduit d'évacuation basse pression 34 qui est avantageusement relié à un égout 64.The two safety valves 28 of the two control systems 14, 16 constitute with their calibration pressure a security adapted to the mechanical strength of the heating circuit 2, in order to evacuate the fluid in case of overpressure towards a low discharge duct pressure 34 which is advantageously connected to a sewer 64.

Quant aux manomètres de pression 26, il faut comprendre ici que, sous le terme « manomètres », on entend pour toute la description de la présente demande qu'il s'agit d'une manière générale des appareils permettant la mesure d'une pression, mécaniques ou électroniques, tels que simples manomètres, capteurs de pression, transmetteurs de pression, transducteurs de pression, etc ... dont certains convertissent la pression mesurée en un signal de sortie analogique ou numérique. Dans ces derniers cas, on peut envisager que l'appareil de mesure concerné serait en outre apte à envoyer un signal de commande au robinet d'isolement 20 pour le fermer dans l'hypothèse où la pression mesurée par ledit appareil deviendrait supérieure à trois bars.As for the pressure gauges 26, it should be understood here that, under the term "manometers", is meant for all the description of the present application that it is generally devices for measuring a pressure mechanical or electronic, such as simple manometers, pressure sensors, pressure transmitters, pressure transducers, etc ... some of which convert the measured pressure into an analog or digital output signal. In these latter cases, it can be envisaged that the measuring apparatus concerned would also be able to send a control signal to the isolation valve 20 to close it in the event that the pressure measured by said apparatus becomes greater than three bars. .

Un manomètre généralement installé sur la chaudière du circuit de chauffage, pour mesurer la pression de ce circuit dans les conditions normales de fonctionnement du chauffage, ne remplace pas les deux manomètres spécifiques 26 disposés chacun sur un système de commande 14, 16.A manometer generally installed on the boiler of the heating circuit, for measuring the pressure of this circuit in the normal operating conditions of the heating, does not replace the two specific pressure gauges 26 each arranged on a control system 14, 16.

La pompe 10 comporte aussi une liaison 36 vers le conduit d'évacuation 34, afin de pouvoir le cas échéant vidanger une eau de nettoyage ou de rinçage après son utilisation dans l'ensemble du circuit.The pump 10 also has a connection 36 to the exhaust duct 34, so that it can optionally drain a cleaning or rinsing water after its use throughout the circuit.

Un compresseur d'air 40 alimente un robinet d'injection d'air 42 se trouvant sur chaque système de commande 14, 16, entre le clapet anti-retour 22 et le deuxième raccord trois voies 32, afin d'injecter de l'air sous pression dans l'eau de nettoyage, du côté amont suivant le sens de circulation dans le circuit de chauffage 2, afin d'accompagner cette eau à travers ce circuit.An air compressor 40 supplies an air injection valve 42 located on each control system 14, 16, between the non-return valve 22 and the second three-way connector 32, in order to inject air. under pressure in the cleaning water, upstream side in the direction of circulation in the heating circuit 2, to accompany this water through this circuit.

Le fonctionnement de l'installation de désembouage est le suivant, les deux robinets d'isolement 20 étant ouverts.The operation of the de-wetting facility is as follows, the two isolation valves 20 being open.

Pour une circulation de l'eau de nettoyage dans le sens venant du premier conduit 12, on ferme le robinet de blocage 24 du premier système de commande 14, et on ouvre celui du deuxième système de commande 16.For a circulation of the cleaning water in the direction coming from the first conduit 12, the blocking valve 24 of the first control system 14 is closed, and that of the second control system 16 is opened.

Un fonctionnement de la pompe 10 alimentant le premier conduit 12 fait circuler le fluide successivement dans le clapet anti-retour 22 du premier système de commande 14, puis dans le circuit de chauffage 2, et ensuite dans le robinet de blocage 24 du deuxième système de commande 16. Le clapet anti-retour 22 du deuxième système de commande 16 est alors opérationnel, c'est-à-dire fermé pour ce sens de circulation. Le fluide revient ensuite par le deuxième conduit 18 à la pompe 10, en passant par le pot de désembouage 38.Operation of the pump 10 supplying the first duct 12 circulates the fluid successively in the nonreturn valve 22 of the first control system 14, then in the heating circuit 2, and then in the blocking valve 24 of the second control system. control 16. The nonreturn valve 22 of the second control system 16 is then operational, that is to say closed for this direction of circulation. The fluid then returns via the second conduit 18 to the pump 10, passing through the defoaming pot 38.

En même temps, pendant cette circulation, on injecte de l'air comprimé par le compresseur 40 à l'entrée du circuit de chauffage 2, en ouvrant le robinet d'injection d'air 42 du premier système de commande 14, éventuellement par saccades, afin de provoquer des chocs mécaniques qui aident au décollement et à la circulation des boues.At the same time, during this circulation, compressed air is injected by the compressor 40 to the inlet of the heating circuit 2, by opening the air injection valve 42 of the first control system 14, possibly by saccades. , in order to cause mechanical shocks that help to detach and circulate the sludge.

Après un temps de circulation dans ce sens de l'eau de nettoyage, par exemple cinq minutes, on inverse le sens de circulation. Pour cela, on ferme le robinet de blocage 24 du deuxième système de commande 16, on ouvre celui du premier système de commande 14, et on commande la pompe 10 pour délivrer le flux de l'eau dans le sens inverse du précédent, c'est-à-dire sur le deuxième conduit 18. On injecte de l'air en ouvrant le robinet d'injection d'air 42 du deuxième système de commande 16.After a circulation time in this direction of the cleaning water, for example five minutes, the direction of circulation is reversed. For this purpose, the shut-off valve 24 of the second control system 16 is closed, the first control system 14 is opened, and the pump 10 is controlled to deliver the flow of water in the opposite direction to the previous one. that is to say on the second duct 18. Air is injected by opening the air injection valve 42 of the second control system 16.

On peut ainsi réaliser plusieurs inversions du sens de circulation de l'eau de nettoyage, avec éventuellement un changement de cette eau, jusqu'à ce que l'eau de sortie soit suffisamment claire, démontrant ainsi la propreté du circuit de chauffage.It is thus possible to carry out several inversions of the direction of circulation of the cleaning water, possibly with a change of this water, until the outlet water is sufficiently clear, thus demonstrating the cleanliness of the heating circuit.

Le circuit de désembouage fermé permet de recycler l'eau de nettoyage pour un certain nombre de circulations, et ainsi de limiter sa consommation.The closed defoaming circuit recycles the cleaning water for a certain number of circulations, and thus limits its consumption.

Les manomètres de pression 26 permettent de surveiller en permanence la montée en pression dans le circuit de chauffage 2, pour diminuer ou arrêter si nécessaire la pression délivrée par la pompe 10. En particulier, les circulations alternées successives dans le circuit de chauffage 2 peuvent décoller brutalement des quantités importantes de matière qui pourraient obstruer rapidement des conduits ou des sorties de radiateurs en faisant monter la pression. On assure ainsi la sécurité.The pressure gauges 26 make it possible to constantly monitor the rise in pressure in the heating circuit 2, in order to reduce or stop, if necessary, the pressure delivered by the pump 10. In particular, the successive alternating circulations in the heating circuit 2 can take off. abruptly large amounts of material that could quickly obstruct the ducts or radiator outlets by raising the pressure. This ensures security.

En complément, les manomètres 26 peuvent comporter une détection électrique de seuil envoyant un signal, par exemple sonore ou visuel, pour indiquer une surpression.In addition, the gauges 26 may comprise an electrical threshold detection sending a signal, for example sound or visual, to indicate an overpressure.

Les deux manomètres 26 permettent de surveiller la pression maximum des deux côtés du circuit de chauffage 2 pendant les opérations de désembouage afin d'éviter tout accident. On peut effectuer notamment un arrêt automatique de la montée en pression dans le cas d'un manomètre à détection électrique de seuil. On protège ainsi en particulier des circuits comportant des tuyaux en matière plastique du type polyéthylène réticulé haute densité « PER », qui présentent une résistance à la pression plus faible.The two pressure gauges 26 make it possible to monitor the maximum pressure on both sides of the heating circuit 2 during the defoaming operations in order to avoid any accident. In particular, an automatic shutdown of the pressure rise can be carried out in the case of an electric threshold detection pressure gauge. This particularly protects circuits with plastic pipes of the type high density crosslinked polyethylene "PER", which have a lower pressure resistance.

De plus, la différence de pression entre l'entrée et la sortie du circuit de chauffage 2, indiquée par l'écart entre les deux manomètres 26, peut constituer un moyen de mesure de la résistance à la circulation du flux dans ce circuit, et donc un indicateur du niveau d'embouage du circuit.In addition, the pressure difference between the inlet and the outlet of the heating circuit 2, indicated by the difference between the two gauges 26, may constitute a means of measuring the flow resistance in this circuit, and therefore an indicator of the degree of slugging of the circuit.

A l'inverse, si l'on observe une pression au manomètre 26 nettement insuffisante, par exemple de 0,5 bar, on injectera alors davantage d'air à travers le robinet 42 concerné, à savoir celui du système de commande 14 ou 16 constituant l'entrée d'eau de nettoyage via le conduit 12 ou 18, afin de créer les contraintes mécaniques recherchées et de conserver la cadence de désembouage.On the other hand, if a clearly insufficient gauge pressure is observed, for example 0.5 bar, then more air will be injected through the valve 42 concerned, namely that of the control system 14 or 16. constituting the inlet of cleaning water via the duct 12 or 18, in order to create the mechanical stresses sought and to maintain the rate of defogging.

Le manomètre 26 disposé du côté de la sortie du circuit de chauffage 2 permet en particulier de détecter une fuite ou un déchirement dans ce circuit de chauffage, en mesurant une baisse de pression brutale et importante.The manometer 26 disposed on the output side of the heating circuit 2 in particular makes it possible to detect leakage or tearing in this heating circuit, by measuring a sudden and significant drop in pressure.

Le clapet anti-retour 22 de chaque système de commande 14, 16 permet d'éviter automatiquement lors d'une montée en pression du circuit, en particulier pendant l'injection d'air, une remontée de fluides vers le conduit d'entrée d'eau venant de la pompe 10. On peut ainsi inverser le sens de circulation venant de la pompe 10, avec le clapet de l'autre système de commande 14, 16 qui fonctionne alors automatiquement sans intervention manuelle, pour protéger l'autre entrée d'eau.The nonreturn valve 22 of each control system 14, 16 makes it possible automatically to avoid, during a pressure rise of the circuit, in particular during the injection of air, a rise of fluids towards the inlet duct. from the pump 10. It is thus possible to reverse the direction of flow coming from the pump 10, with the valve of the other control system 14, 16 which then operates automatically without manual intervention, to protect the other inlet of the pump. 'water.

La figure 2 présente en variante une installation de désembouage similaire, qui se distingue de l'installation de la figure 1 par le fait qu'elle ne comporte pas de compresseur d'air extérieur, ni de robinet 42 d'injection d'air sur chaque système de commande 14, 16.The figure 2 alternatively presents a similar defoamer, which differs from the installation of the figure 1 in that it does not include an outdoor air compressor or an air injection valve 42 on each control system 14, 16.

La pompe 10 comporte dans ce cas un compresseur d'air intégré 50, qui injecte de l'air de manière continue ou par saccades dans le conduit 12, 18 constituant le départ de l'eau de nettoyage. De cette manière, la pompe 10 gère automatiquement le côté d'injection d'air suivant le départ de l'eau de nettoyage, par le conduit 12, 18, sans avoir à intervenir sur ce circuit d'air.The pump 10 comprises in this case an integrated air compressor 50, which injects air continuously or by jerks in the conduit 12, 18 constituting the departure of the cleaning water. In this way, the pump 10 automatically manages the air injection side following the departure of the cleaning water, through the conduit 12, 18, without having to intervene on this air circuit.

La figure 3 présente une deuxième variante de l'installation de désembouage présentée à la figure 1, comportant une alimentation d'eau extérieure 62 directement reliée au premier conduit 12, le deuxième conduit 18 étant relié à un égout 64 par l'intermédiaire du pot de désembouage 38.The figure 3 presents a second variant of the defoaming installation presented at figure 1 , comprising an external water supply 62 directly connected to the first conduit 12, the second conduit 18 being connected to a sewer 64 via the defoaming pot 38.

On réalise une circulation d'eau venant de l'alimentation extérieure 62, en utilisant la pression de ce réseau d'alimentation pour la propulsion. L'eau, après avoir servi une unique fois dans le circuit de chauffage 2, est rejetée dans l'égout 64 après récupération des boues.A circulation of water coming from the external supply 62 is made using the pressure of this supply network for propulsion. Water, having served a once in the heating circuit 2, is rejected in the sewer 64 after recovery of sludge.

L'inversion de sens de circulation de l'eau de nettoyage dans le circuit de chauffage 2 se fait dans ce cas après une inversion manuelle des branchements sur l'alimentation d'eau extérieure 62 et sur l'égout 64.The reversal of the flow direction of the cleaning water in the heating circuit 2 is done in this case after a manual reversal of the connections to the external water supply 62 and the sewer 64.

Dans l'installation de la figure 3, le compresseur d'air 40 peut être remplacé par un appareil du commerce, traditionnel, combinant une pompe pour propulser l'eau et un compresseur d'air.In the installation of the figure 3 , the air compressor 40 can be replaced by a traditional commercial apparatus, combining a pump for propelling water and an air compressor.

Il résulte de tout ce qui précède que l'invention consistant en la combinaison des deux systèmes de commande 14 et 16 avec le compresseur d'air 40 et la distribution d'eau froide sanitaire 62 remplace très avantageusement les appareils de l'état actuel de la technique constituées d'une pompe et d'un compresseur intégré.It follows from all the foregoing that the invention consisting in the combination of the two control systems 14 and 16 with the air compressor 40 and the sanitary cold water distribution 62 very advantageously replaces the apparatus of the present state of the art. the technique consist of a pump and an integrated compressor.

La figure 4 présente une troisième variante de l'installation de désembouage présentée à la figure 1, comportant un bloc d'inversion 60 relié à la sortie de l'eau sous pression 72 et au retour de cette eau sous pression 74 de la pompe 10. Chaque conduit 12, 18 est relié à la fois à la sortie 72 et au retour 74, à chaque fois par une vanne d'inversion de débit 70. Chaque vanne d'inversion de débit 70 peut être à commande manuelle, ou à commande automatisée.The figure 4 presents a third variant of the defoaming installation presented at figure 1 , comprising an inverting block 60 connected to the outlet of the pressurized water 72 and the return of this pressurized water 74 from the pump 10. Each duct 12, 18 is connected to both the outlet 72 and the return 74, each time by a flow reversal valve 70. Each flow reversal valve 70 may be manually controlled, or automated control.

De cette manière en ouvrant deux vannes d'inversion de débit 70 opposées et en fermant les deux autres, on relie la sortie de la pompe 72 au premier conduit 12 ou au deuxième conduit 18, l'autre conduit étant simultanément relié au retour de la pompe 74.In this way, by opening two opposite flow reversal valves 70 and closing the other two, the output of the pump 72 is connected to the first conduit 12 or the second conduit 18, the other conduit being simultaneously connected to the return of the pump 74.

La pompe 10 est reliée par ailleurs à une entrée venant d'une alimentation d'eau extérieure 62, et à une sortie 36 allant vers le conduit d'évacuation basse pression 34 relié à un égout 64. Le pot de désembouage 38 est installé sur la sortie avant l'égout 64. En variante le pot de désembouage 38 peut être installé sur l'un des deux conduits 12 ou 18.The pump 10 is furthermore connected to an inlet coming from an external water supply 62, and to an outlet 36 going to the low-pressure discharge duct 34 connected to a sewer 64. The defoamer 38 is installed on the outlet before the sewer 64. Alternatively the defogger pot 38 may be installed on one of the two ducts 12 or 18.

Le bloc d'inversion 60 permet d'alterner les raccordements de la sortie de la pompe 72 et de son retour 74, en ouvrant deux vannes d'inversion de débit 70 opposées et en fermant les deux autres, et alternativement en inversant cette manoeuvre, ce qui s'effectue de manière rapide par une simple commande manuelle ou automatique, sans effectuer de débranchement de raccord.The inversion block 60 alternates the connections of the output of the pump 72 and its return 74, by opening two opposite flow reversal valves 70 and closing the other two, and alternately by reversing this maneuver, this is done quickly by simple manual or automatic control, without disconnecting the connection.

De cette manière, suivant la commande du bloc d'inversion 60, on réalise une circulation d'eau venant de l'alimentation extérieure 62, puis montée en pression par la pompe 10, dans un sens ou dans l'autre. L'eau venant sur le retour 74 peut être recyclée par la pompe 10 pour être délivrée par la sortie 72. Après un certain nombre de cycles l'eau est rejetée dans l'égout 64 après récupération des boues.In this way, according to the control of the inverting block 60, a circulation of water coming from the external supply 62 is made and then pressure is raised by the pump 10 in one direction or the other. The return water 74 can be recycled by the pump 10 to be delivered through the outlet 72. After a number of cycles the water is discharged into the sewer 64 after recovery of the sludge.

En variante le bloc d'inversion 60 peut être intégré dans la pompe 10. Par ailleurs si la pression du circuit d'alimentation extérieure 62 est suffisante, on peut se passer d'une pompe de pression 10.In a variant, the inversion block 60 can be integrated in the pump 10. In addition, if the pressure of the external supply circuit 62 is sufficient, a pressure pump 10 can be dispensed with.

Le compresseur d'air 40 alimente chaque robinet d'injection d'air 42 par une vanne motorisée d'injection d'air 76, permettant d'effectuer automatiquement un débit saccadé d'air suivant un programme prédéfini.The air compressor 40 feeds each air injection valve 42 by a motorized air injection valve 76, to automatically perform a jerky flow of air according to a predefined program.

Pour toutes les variantes de circuit de nettoyage utilisant une pression de fluide venant d'une pompe 10 ou d'un réseau d'alimentation extérieure 62, les manomètres de pression 26 assurent de manière simple et efficace la sécurité.For all cleaning circuit variants using a fluid pressure from a pump 10 or an external supply network 62, the pressure gauges 26 provide simple and effective safety.

Comme il va de soi, l'invention ne se limite pas aux seuls modes d'exécution préférentiels décrits ci-dessus.It goes without saying that the invention is not limited to the only preferred embodiments described above.

Elle embrasse au contraire toutes les variantes possibles de réalisation, pour autant que ces dernières ne sortent pas du cadre délimité par les revendications ci-jointes qui définissent la portée de la présente invention.On the contrary, it embraces all the possible variants of embodiment, insofar as the latter do not go beyond the scope delimited by the appended claims which define the scope of the present invention.

Ainsi, d'ailleurs, sans modifications autres que celles permettant d'associer l'invention à d'autres systèmes imposant de temps à autre un nettoyage de l'intérieur dudit système, le procédé selon l'invention pourrait servir au nettoyage de dispositifs ayant deux extrémités qui permettent entre elles la circulation du fluide de nettoyage dans un sens, dans l'autre sens, ou dans les deux sens respectivement alternés du dispositif à nettoyer. Les pots d'échappement de véhicules pourraient constituer des solutions de nettoyage universelles à l'aide du procédé selon l'invention.Thus, moreover, without modifications other than those making it possible to associate the invention with other systems imposing from time to time a cleaning of the interior of said system, the method according to the invention could be used for cleaning devices having two ends which allow the flow of the cleaning fluid between them in one direction, in the other direction, or in the two respectively alternating directions of the device to be cleaned. The exhaust pipes of vehicles could constitute universal cleaning solutions using the method according to the invention.

Claims (13)

Installation de désembouage prévue pour être raccordée à deux extrémités (6, 8) d'un circuit de chauffage par eau chaude (2), comportant un moyen de circulation d'une eau de nettoyage entre ces extrémités (6, 8), permettant d'inverser le sens de circulation dans le circuit de chauffage (2), comportant un système d'injection d'air (40, 50) dans l'eau de nettoyage, et comportant deux systèmes de commande (14, 16) disposés chacun respectivement à une extrémité (6, 8) du circuit de chauffage (2), caractérisée en ce que chaque système de commande (14, 16) est doté d'un manomètre de pression (26) donnant la pression à chaque extrémité (6, 8) du circuit de chauffage (2), et comporte un clapet anti-retour (22) laissant passer le fluide vers cette extrémité (6, 8).Disembossing installation intended to be connected at two ends (6, 8) of a hot water heating circuit (2), comprising means for circulating a cleaning water between these ends (6, 8), allowing reversing the direction of flow in the heating circuit (2), comprising an air injection system (40, 50) in the cleaning water, and comprising two control systems (14, 16) respectively arranged respectively at one end (6, 8) of the heating circuit (2), characterized in that each control system (14, 16) is provided with a pressure gauge (26) giving the pressure at each end (6, 8) ) of the heating circuit (2), and comprises a non-return valve (22) passing the fluid towards this end (6, 8). Installation de désembouage selon la revendication 1, caractérisée en ce que chaque système de commande (14, 16) comporte un robinet d'injection d'air (42) pour injecter de l'air au niveau de chaque extrémité (6, 8) du circuit de chauffage (2).Defoaming device according to claim 1, characterized in that each control system (14, 16) comprises an air injection valve (42) for injecting air at each end (6, 8) of the heating circuit (2). Installation de désembouage selon la revendication 1 ou 2, caractérisée en ce que les manomètres de pression (26) comportent un moyen de détection automatique d'un seuil de pression.Defoaming device according to claim 1 or 2, characterized in that the pressure gauges (26) comprise a means for automatically detecting a pressure threshold. Installation de désembouage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que chaque système de commande (14, 16) comporte un robinet de blocage (24) disposé en parallèle de chaque clapet anti-retour (22).Defoaming device according to any one of claims 1 to 3, characterized in that each control system (14, 16) comprises a locking valve (24) arranged in parallel with each non-return valve (22). Installation de désembouage selon la revendication 4, caractérisée en ce que chaque système de commande (14, 16) comporte un robinet d'isolement (20) pour l'alimentation à la fois du robinet de blocage (24) et du clapet anti-retour (22).Defoaming device according to claim 4, characterized in that each control system (14, 16) comprises an isolating valve (20) for feeding both the blocking valve (24) and the non-return valve (22). Installation de désembouage selon l'une quelconque des revendications 1 à 5, caractérisée en ce que chaque système de commande (14, 16) comporte, pour chaque extrémité (6, 8) du circuit de chauffage (2), une soupape de sécurité (28).Defoaming device according to one of Claims 1 to 5, characterized in that each control system (14, 16) has, for each end (6, 8) of the heating circuit (2), a safety valve ( 28). Installation de désembouage selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'elle comporte un compresseur d'air (40) pouvant injecter de l'air alternativement vers l'une ou l'autre des deux extrémités (6, 8) du circuit de chauffage (2), entre le clapet anti-retour (22) et l'extrémité (6, 8) reliée à ce système de commande (14, 16).Defoaming device according to any one of claims 1 to 6, characterized in that it comprises an air compressor (40) which can inject air alternately towards one or the other of the two ends (6, 8) of the heating circuit (2), between the non-return valve (22) and the end (6, 8) connected to this control system (14, 16). Installation de désembouage selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'elle comporte un compresseur d'air (50) intégré dans une pompe (10) de circulation de l'eau de nettoyage.Defoaming device according to any one of claims 1 to 6, characterized in that it comprises an air compressor (50) integrated in a pump (10) for circulating the cleaning water. Installation de désembouage selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'elle comporte un bloc d'inversion (60) relié d'une part au deux systèmes de commande (14, 16), et d'autre part à une sortie (72) délivrant une eau sous pression au circuit de chauffage (2), et à un retour (74) recevant l'eau de ce circuit de ce chauffage (2), comprenant des moyens permettant d'inverser le branchement de la sortie (72) et du retour (74).Defoaming device according to any one of claims 1 to 8, characterized in that it comprises an inverting block (60) connected on the one hand to the two control systems (14, 16) and on the other hand an outlet (72) delivering a pressurized water to the heating circuit (2), and a return (74) receiving the water of this circuit of the heater (2), comprising means for reversing the connection of the output (72) and the return (74). Installation de désembouage selon la revendication 9, caractérisée en ce que le bloc d'inversion (60) comporte quatre vannes d'inversion de débit (70), disposées chacune entre d'une part un conduit (12, 18), et d'autre part la sortie (72) ou le retour (74).Defoaming device according to claim 9, characterized in that the reversing block (60) has four flow reversing valves (70) each disposed between a conduit (12, 18) and a the other side the exit (72) or the return (74). Installation de désembouage selon la revendication 9 ou 10, caractérisée en ce qu'elle comporte une pompe (10) délivrant l'eau de nettoyage sous pression à la sortie (72) et recevant cette eau par le retour (74).Defoaming device according to claim 9 or 10, characterized in that it comprises a pump (10) delivering the pressurized cleaning water at the outlet (72) and receiving this water through the return (74). Procédé de fonctionnement d'une installation de désembouage selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'il alterne le sens de circulation de l'eau de nettoyage dans le circuit de chauffage (2).Operating method of a defoamer according to any one of claims 1 to 11, characterized in that it alternates the flow direction of the cleaning water in the heating circuit (2). Procédé de fonctionnement selon la revendication 12, caractérisé en ce que pour chaque alternance de sens de circulation de l'eau de nettoyage, il réalise une injection d'air de manière saccadée.Operating method according to claim 12, characterized in that for each alternating flow direction of the cleaning water, it performs an injection of air jerkily.
EP18290010.0A 2017-02-01 2018-02-01 Desludging installation for a hot-water heating circuit Active EP3473949B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1700102A FR3062466B1 (en) 2017-02-01 2017-02-01 CLEARING INSTALLATION FOR A HOT WATER HEATING CIRCUIT

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EP3782742A1 (en) * 2019-08-23 2021-02-24 wattec GmbH Cleaning device and cleaning method

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GB2576943B (en) * 2018-09-07 2021-01-13 Adey Holdings 2008 Ltd Flushing machine

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US4919154A (en) * 1988-02-29 1990-04-24 Engle Thomas B Pipe purging assembly and method therefor
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FR2752614A1 (en) * 1996-08-26 1998-02-27 Gendre Francis Cleaning of refrigeration or heating equipment using working fluid
EP1099488A1 (en) * 1999-11-10 2001-05-16 Progalva Net et 9 Machine for cleaning pipelines
US8628628B1 (en) * 2009-08-03 2014-01-14 Michael R. Bonner Auto-clean heat exchanger deep cleaning station

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US4919154A (en) * 1988-02-29 1990-04-24 Engle Thomas B Pipe purging assembly and method therefor
DE3902366A1 (en) * 1989-01-27 1990-08-02 Jens Pannenborg Method and device for cleaning and regulating the pressures in piping systems
FR2752614A1 (en) * 1996-08-26 1998-02-27 Gendre Francis Cleaning of refrigeration or heating equipment using working fluid
EP1099488A1 (en) * 1999-11-10 2001-05-16 Progalva Net et 9 Machine for cleaning pipelines
US8628628B1 (en) * 2009-08-03 2014-01-14 Michael R. Bonner Auto-clean heat exchanger deep cleaning station

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FR3062466A1 (en) 2018-08-03
EP3473949B1 (en) 2023-08-30
RU2763237C2 (en) 2021-12-28
RU2018102563A3 (en) 2021-06-28
RU2018102563A (en) 2019-07-23
FR3062466B1 (en) 2020-06-26
EP3473949C0 (en) 2023-08-30

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