EP3517779A1 - Saugzentrale für das sammeln von gebrauchten flüssigkeiten eines kraftfahrzeugs, vorrichtung, die die saugzentrale umfasst, und sammelverfahren - Google Patents

Saugzentrale für das sammeln von gebrauchten flüssigkeiten eines kraftfahrzeugs, vorrichtung, die die saugzentrale umfasst, und sammelverfahren Download PDF

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Publication number
EP3517779A1
EP3517779A1 EP19153997.2A EP19153997A EP3517779A1 EP 3517779 A1 EP3517779 A1 EP 3517779A1 EP 19153997 A EP19153997 A EP 19153997A EP 3517779 A1 EP3517779 A1 EP 3517779A1
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EP
European Patent Office
Prior art keywords
suction
tank
fluid
suction unit
tanks
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.)
Withdrawn
Application number
EP19153997.2A
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English (en)
French (fr)
Inventor
Anthony Alves
Jean-Luc MARCINKOWSKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norauto France SAS
Original Assignee
Norauto France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norauto France SAS filed Critical Norauto France SAS
Publication of EP3517779A1 publication Critical patent/EP3517779A1/de
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/045—Removing lubricant by suction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Definitions

  • the invention relates to a central vacuum centralized spent fluids of a motor vehicle.
  • the invention relates to the field of maintenance of motor vehicles and more particularly the maintenance of vehicle fluids such as motor fluids or air conditioning.
  • Extraction, transport and storage must be done in the cleanest way so as not to contaminate the working environment and the external environment. It is also preferred to avoid contact with the operators during these maintenance steps.
  • each fluid is treated separately by a specific maintenance process.
  • suction units for used oils of SAMOA brand This unit is a system for centralized systems for the extraction of used oils from vehicle maintenance shops.
  • the plant is connected to an air compressor, a 230 V / 50 Hz electrical outlet, a waste oil discharge pipe to the storage tank and a suction pipe to the oil drain points. the workshop.
  • the plant consists of an electric vacuum pump.
  • This type of unit makes it possible to extract and transport waste oil to storage by limiting contacts with the operator. However, this unit only manages used motor oils and does not solve the maintenance of other used fluids.
  • An object of the present invention is to respond, at least in part, to the limitations previously set forth.
  • the present invention provides a suction unit for the collection of spent fluids from motor vehicles characterized in that it comprises a plurality of tanks, each tank being dedicated to the storage of a spent fluid and a plurality of vacuum pumps.
  • the plant advantageously comprises a suction fluid network disposed between the plurality of pumps, preferably empty, and the plurality of tanks and comprising a suction line common to the plurality of vacuum pumps. In this way, the plurality of vacuum pumps is pooled so as to suck spent fluids into each dedicated tank in a pooled manner.
  • the present invention makes it possible to collect several types of spent fluids and / or to collect a type of spent fluid in several tanks through a single plant.
  • the fluidic suction network of the plant is shared. It is at least partially common to the various fluid circuits dedicated to spent fluids to be collected.
  • the plant according to the invention comprises a pooling of vacuum pumps which makes it possible to avoid power losses and to manage possible faults.
  • the plant comprises at least two vacuum pumps.
  • the necessary suction power is satisfied and in case of failure of a pump the other pumps can operate the plant.
  • the invention also relates to a device comprising the suction unit as described above, at least one remote suction station and a delocalization fluidic network disposed between the suction unit and the at least one workstation. suction.
  • the invention also relates to a method for collecting spent fluids from motor vehicles comprising the use of a plant as described above.
  • the level sensors provide information on the fluid level in the tank. For each tank, a first sensor is intended to trigger a warning warning of a high level, but does not yet prevent the operation of the system. This alert can be connected to the computer network of the workshop or garage and automatically trigger the sending an e-mail or SMS to a third party (foreman, maintenance manager, waste collection company ).
  • This regulator makes it possible to adjust the vacuum level generated by the vacuum pumps in order to limit evaporation or vaporization of the aspirated fluids and thus preserve the reliability and the service life of the vacuum pumps.
  • the invention also relates to a device comprising the suction unit as described above, at least one remote suction station and a delocalization fluidic network disposed between the suction unit and the at least one suction work station.
  • the invention also relates to a method for collecting spent fluids from motor vehicles comprising the use of a plant as described above.
  • the method comprises operating at least two pumps of the plurality of vacuum pumps to draw a spent fluid to a dedicated tank.
  • the method comprises connecting a suction fluid network to a plurality of pumps and to a plurality of tanks and operating at least two pumps of the plurality of vacuum pumps.
  • the connection steps can be performed chronologically before and without temporal connection with the start of operation of the pumps and without being reproduced at each start of operation of the pumps.
  • the suction unit according to the invention is intended to be used in a workshop or car maintenance garage.
  • the suction unit makes it possible to facilitate the maintenance of motor vehicles and in particular the collection of spent fluids and / or the emptying of circuits of the motor vehicle. Indeed, the suction made by the central can allow to empty circuits by sucking only air in the circuits.
  • motor vehicle is understood to mean any type of vehicle equipped with a heat engine and / or electric motor to move, for example, a car, a truck, a bus, a scooter, a motorcycle or even construction machines such as tractors, backhoe loaders, etc.
  • the fluids, gases or liquids that can be collected by the plant are fluids of the vehicle including a heat engine such as oils, or coolant or fluids related to the operation of the vehicle as the brake fluid, the windshield washer fluid or well the coolant of an air conditioning system or even gasoline or diesel fuel.
  • a heat engine such as oils, or coolant or fluids related to the operation of the vehicle as the brake fluid, the windshield washer fluid or well the coolant of an air conditioning system or even gasoline or diesel fuel.
  • the suction unit comprises a plurality of tanks 2a, 2b for receiving the fluids to be collected.
  • the suction unit 1 comprises at least two tanks.
  • the plant 1 comprises at least one tank for each fluid to be collected so as not to mix the different types of fluids.
  • the plant according to the invention can be used to suck up a type of fluid to be collected in different tanks or a type of fluid to be collected in a tank.
  • the plant 1 comprises a fluid recovery circuit specific to each fluid to be collected, so that each collected fluid circulates in a specific recovery circuit and is collected in a dedicated vessel.
  • a recovery circuit comprises a fluid supply line 4a, 4b opening into a tank 2a, 2b, preferably in the upper part thereof.
  • the circuit may comprise, on each fluid supply line 4a, 4b, a valve 8a, 8b for controlling the opening or closing of the recovery circuit.
  • Each tank advantageously comprises a drain opening 14a, 14b preferably arranged in the lower part of the tanks 2a, 2b to better empty it.
  • at least one of the tanks has a capacity of at least 10 liters and preferably at least 100 liters.
  • the tank 2a can make at least 1000 liters, or even at least 1500 liters, and / or the tank 2b at least 100 liters, or even at least 300 liters.
  • each tank 2a, 2b is equipped with at least one level sensor 12a, 12b, 13.
  • the level sensors make it possible to indicate an alert level and / or a maximum level causing the stop from the plant 1.
  • the plant 1 comprises a plurality of pumps such as vacuum pumps 3.
  • the vacuum pumps 3 are advantageously electric pumps.
  • a vacuum pump is a type of pump used to evacuate, that is to say to extract the air or any other gas contained in a chamber by depression. It is therefore about vacuum pumps. Generally, their flow is low and the depression is high.
  • the plant 1 comprises a suction fluid network which connects the vacuum pumps 3 and the tanks 2a, 2b.
  • the fluidic network allows the circulation of a suction gas, in particular air.
  • the fluidic network comprises a common suction line.
  • the fluidic network comprises connecting branches 30 - 31 connecting each vacuum pump 3 to the common suction line and advantageously each tank is connected to the common suction line via a connecting pipe 28-29. to pool the suction of the vacuum pumps 3 by the common suction line while allowing to collect fluids in different tanks.
  • the suction power is controlled by the startup of one or more pumps 3 as required.
  • the unit 1 can operate and collect the various fluids among the different recovery circuits without preferring one to the detriment of another.
  • the suction can be simultaneous in the different fluid recovery circuits or be alternated.
  • the unit 1 comprises a switching module for controlling the flow of the suction fluid in the suction fluid network.
  • the switching module comprises at least a first switching means arranged at the connection of the connecting branches 30, 31 on the common suction line.
  • the first switching means comprises, according to one possibility, a valve 16 -17 arranged on each connection branch 30, 31. Depending on the opening or closing of the valves 16, 17, one or two pumps 3 will be connected to the line of common aspiration.
  • the switching module comprises second switching means configured to control the suction in one or more tanks.
  • the second switching means are arranged according to a first possibility on the common suction line, as illustrated in FIG. figure 1 it is the valves 22 and 23 which may be two-way or three-way, or according to a second possibility not shown, on the connection ducts 28-29 connecting the common suction line to the tanks 2a, 2b.
  • the central unit 1 comprises a safety device 26 preferably disposed on the common suction line and making it possible to create an air intake in the event of overpressure in the fluidic network so as to avoid any risk of overheating of the vacuum pumps 3
  • the safety device 26 advantageously comprises a pressure relief valve or a calibrated valve 18. This pressure relief valve avoids too much pressurization, especially in the separator 10 and, vacuum pumps 3 in the event of improper handling or failure of a valve during the operation of emptying a tank made by compressed air .
  • the set pressure of this pressure relief valve or the calibrated valve 18 must be lower than the maximum permissible pressure of the vacuum pumps 3. For example, a pressure of 1.1 bar may be used.
  • valve 18 or the pressure relief valve opens, allowing the excess air to escape, which could damage the pumps.
  • the unit 1 comprises a vacuum regulator 32.
  • the vacuum regulator 32 is preferably placed on the common suction line.
  • the regulator 32 makes it possible to adjust the vacuum level generated by the vacuum pumps in order to limit evaporation or vaporization of the aspirated fluids and thus preserve the reliability and the service life of the vacuum pumps.
  • the regulator 32 comprises a calibrated valve 33 for limiting the vacuum in the suction fluid network.
  • the plant 1 comprises a droplet separator 11 preferably arranged on the common suction line. Even more preferably, the droplet separator 11 is arranged upstream of the connection of the connecting branches 30-31 and downstream of the tanks 2a, 2b, more specifically downstream of the safety device 26.
  • the droplet separator 11 is intended for separating a liquid from a gas in particular to prevent collected fluid from escaping into the suction gas and damaging the pumps 3.
  • the droplet separator 11 is preferably adapted to a fine separation, that is particles fines and / or fine droplets, in particular by coalescence.
  • the droplet separator 11 is at least partially transparent, in particular making it possible to visualize the state of the separator.
  • the plant 1 may also comprise an advantageously transparent additional separator 10 preferably arranged on the common suction line upstream of the droplet separator 11.
  • the separator 10 advantageously makes it possible to separate by gravity or inertia a liquid phase from a gaseous phase.
  • the at least partially transparent separator 10 makes it possible to carry out a visual inspection.
  • This separator is preferably equipped with a float. In case of ingestion of fluid in the separator, the level of it in amount will raise the float which will obstruct the passage and thus avoid the pumps to suck a non-compressible fluid which could damage them.
  • the transparency of said separator allows the visual control of its state, its wear and the amount of fluid recovered.
  • the central unit 1 preferably comprises at least one pneumatic connection 24a 24b arranged on the common suction line for connecting a compressed air compressor.
  • an expansion valve is arranged between the compressor and the pneumatic connection 24a, 24b.
  • the pneumatic connection 24a, 24b is arranged at the three-way valves 22, 23 arranged on the common suction line.
  • the pneumatic connections 24a, 24b connect a pneumatic network of the workshop to calibrated pressure reducers 19 and 20 for pressurizing the tanks 2a, 2b. This pressurization is done during the emptying operation of the tanks 2a, 2b. A pressure of 0.7 bar is sufficient for efficient emptying of the tanks in a limited time.
  • the unit 1 comprises an independent recovery circuit comprising a vacuum draw line 6 connected to a vacuum pump 7.
  • the vacuum draw line 6 may comprise a valve 27. Efficient emptying of tanks or fluidic circuits of a vehicle without the need for a recovery tank and without being disturbed by the other fluid circuits of the plant. This makes it possible to reach very low vacuum levels in a repeatable way.
  • the central unit 1 is advantageously implanted in a device comprising the central unit 1 and remote suction stations.
  • the device comprises a relocation network connecting the remote suction stations and the central 1.
  • the relocation network allows to connect the suction stations to the fluid supply lines 4a, 4b of the plant.
  • the device advantageously comprises a control panel and an electrical cabinet managing the automatism of the device and the electrical circuit.
  • FIG. figure 1 The architecture of a plant according to an embodiment illustrated in FIG. figure 1 is hereinafter described.
  • downstream and upstream are defined according to the majority circulation direction of the fluid.
  • the central 1 comprises two tanks 2a, 2b.
  • the tank 2a is fluidly connected to the central suction line via a connecting pipe 29.
  • the tank 2b is fluidly connected to the central suction line via a connecting pipe 28.
  • the suction line common receives a three-way valve 23 which one of the channels advantageously allows the connection of a pneumatic connector 24b.
  • the other two lanes are on the common suction line.
  • the common suction line continues to the connection 110 of the connection line 29 of the tank 2a on the common suction line.
  • the common suction line receives a three-way valve 22, one of which preferably allows the connection of a pneumatic connection 24a.
  • the other two lanes are on the common suction line.
  • the mouth 101 of the tank 2b is fluidly connected to the connection pipe 28 at the connection 111, itself fluidly connected to the common suction line.
  • the common suction line passes through a preferably three-way valve on which a pneumatic connection 24b is fluidly connected.
  • the common suction line is then fluidly connected to the connection 110 of the connecting pipe 29 to which is fluidly connected the mouth 100 of the tank 2a.
  • the common suction line then passes through a preferably three-way valve on which is fluidly connected a pneumatic connection 24a.
  • the safety device 26 is fluidly connected to the common suction line.
  • the common suction line then passes through the transparent separator 10 via its inlet 106 and leaves its outlet 107 which is fluidly connected to the inlet 108 of the droplet separator 11.
  • the outlet 109 of the droplet separator 11 is fluidly connected to the branches connection 30 -31 through the common suction line.
  • a workshop includes several remote suction stations. It is meant by deportees that the suction station is not in contact with the central unit, but separated by a distance, for example greater than or equal to 1m.
  • Suction stations can be provided for the collection of one or more fluids to be collected.
  • this workshop comprises a suction station 300 simultaneously comprising the suction means 201, 204, 203 respectively for the drawdown of the air conditioning system, the engine oil and the coolant, another suction station 301 comprises only the suction means 202, 203 respectively for the engine oil and the cooling liquid, other suction stations comprise only the suction means 201, for the vacuum draw of the system air conditioning or the suction means 203 for the coolant.
  • a method of operating the central unit 1 and more broadly the device comprising the central unit 1 is described below with regard to the architecture of a plant according to the figure 1 .
  • the method comprises a step of aspirating a spent fluid contained in a motor vehicle.
  • the process begins with the startup of at least one pump 3 and advantageously the opening of a valve 16, 17 for the fluid connection of the pump 3 to the suction line.
  • the method comprises the opening of a valve 8a and / or 8b so as to allow the circulation of fluid in the pipe 4a and / or 4b opening in the tank 2a and / or 2b.
  • the valve 22 and / or 23 is open.
  • the two valves 16 and 17 are open to connect the two pumps 3 to the common suction line.
  • the two valves 22 and 23 are open so as to allow the circulation of the suction fluid in the common suction line and the two valves 8a, 8b of the two fluid supply lines to be collected are open.
  • the suction carried out by the vacuum pumps draws the suction fluid along the common suction line, then into the tanks 2a and 2b thus creating a vacuum sucking the fluid to be collected along the supply lines 4a, 4b for pouring into the tanks 2a and 2b.
  • the two valves 16 and 17 are open to connect the two pumps 3 to the line of common aspiration.
  • the valve 22 is open so as to allow the circulation of the suction fluid in the common suction line and the valve 23 is closed so as to block the circulation of the suction fluid in the common suction line.
  • the valve 8a of the fluid supply line 4a to be collected is opened and the valve 8b of the fluid supply pipe 4b to be collected is closed.
  • the vacuum pump draws the suction fluid along the common suction line and then into the tank 2a, thereby creating a vacuum. vacuum sucking fluid to collect along the supply line 4a to pour into the tank 2a.
  • the two valves 16 and 17 are open to connect the two pumps 3 to the line of common aspiration.
  • the two valves 22 and 23 are open so as to allow the circulation of the suction fluid in the common suction line.
  • the valve 8a of the fluid supply line 4a to be collected is closed preventing the suction of the fluid to be collected in said pipe and the valve 8b of the conduit 4b of fluids to be collected is opened.
  • the suction carried out by the vacuum pumps sucks the suction fluid along the common suction line, then into the tank 2b thus creating a vacuum sucking the fluid to be collected along the supply line 4b so that it pours into the tank 2b.
  • the number of pumps in action and connected to the common suction line is selected according to the desired suction power.
  • the device according to the invention is intended to be put into operating state that is to say suction once. That is to say, the device advantageously comprises suction control means at the remote suction stations so that the operators do not have to manage the configuration of the central 1 at each suction.
  • the method advantageously comprises a draining step in which the emptying 14a, 14b of a tank 2a, 2b is open and the vent 9a, 9b for example by the opening of a control element such as the valve 21a , 21b allowing an air intake and the emptying of the tank 2a, 2b.
  • a control element such as the valve 21a , 21b allowing an air intake and the emptying of the tank 2a, 2b.
  • the vent 9a, 9b is advantageously closed to allow suction of the fluid to be collected.
  • valves 8a, 8b are closed and the 3-way valves 22, 23 are also closed.
  • Another possibility of a pressure-emptying process advantageously comprises a draining step in which the emptying 14a, 14b of a tank 2a, 2b is open allowing the tank 2a, 2b to be emptied. the before the valves 8a, 8b are closed and the 3-way valves 22, 23 are positioned so as to connect the inlet 112 and the outlet 104 as well as the inlet 113 and the outlet 102, which will allow the pressurization of the tanks 2a, 2b and discharge liquids via the drain outlets 14a, 14b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Refuse-Collection Vehicles (AREA)
  • Sewage (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP19153997.2A 2018-01-29 2019-01-28 Saugzentrale für das sammeln von gebrauchten flüssigkeiten eines kraftfahrzeugs, vorrichtung, die die saugzentrale umfasst, und sammelverfahren Withdrawn EP3517779A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1850697A FR3077343B1 (fr) 2018-01-29 2018-01-29 Centrale d'aspiration pour la collecte de fluides uses d'un vehicule automobile, dispositif comprenant la centrale et procede de collecte

Publications (1)

Publication Number Publication Date
EP3517779A1 true EP3517779A1 (de) 2019-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19153997.2A Withdrawn EP3517779A1 (de) 2018-01-29 2019-01-28 Saugzentrale für das sammeln von gebrauchten flüssigkeiten eines kraftfahrzeugs, vorrichtung, die die saugzentrale umfasst, und sammelverfahren

Country Status (2)

Country Link
EP (1) EP3517779A1 (de)
FR (1) FR3077343B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1609990A1 (de) * 2003-03-03 2005-12-28 OHMI, Tadahiro Vakuumvorrichtung und vakuumpumpe
WO2007036480A1 (de) * 2005-09-30 2007-04-05 Siemens Vdo Automotive Ag Ansaugeinheit
CN102434501B (zh) * 2011-11-08 2014-05-07 吴艳坤 节能型三流体联合射流真空装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1609990A1 (de) * 2003-03-03 2005-12-28 OHMI, Tadahiro Vakuumvorrichtung und vakuumpumpe
WO2007036480A1 (de) * 2005-09-30 2007-04-05 Siemens Vdo Automotive Ag Ansaugeinheit
CN102434501B (zh) * 2011-11-08 2014-05-07 吴艳坤 节能型三流体联合射流真空装置

Also Published As

Publication number Publication date
FR3077343A1 (fr) 2019-08-02
FR3077343B1 (fr) 2020-02-14

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