EP3816446A1 - Fahrzeugskühlkreislauf - Google Patents

Fahrzeugskühlkreislauf Download PDF

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Publication number
EP3816446A1
EP3816446A1 EP19206687.6A EP19206687A EP3816446A1 EP 3816446 A1 EP3816446 A1 EP 3816446A1 EP 19206687 A EP19206687 A EP 19206687A EP 3816446 A1 EP3816446 A1 EP 3816446A1
Authority
EP
European Patent Office
Prior art keywords
circuit
screw
driven
pump
screws
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19206687.6A
Other languages
English (en)
French (fr)
Inventor
Didier Richard
Lionel Martin
Dominique Vaginet
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Priority to EP19206687.6A priority Critical patent/EP3816446A1/de
Priority to US17/772,078 priority patent/US20220381178A1/en
Priority to CN202080074390.0A priority patent/CN114585805A/zh
Priority to PCT/US2020/055467 priority patent/WO2021086603A1/en
Publication of EP3816446A1 publication Critical patent/EP3816446A1/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F04C2/165—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type having more than two rotary pistons with parallel axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/811—Actuator for control, e.g. pneumatic, hydraulic, electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/19—Temperature
    • F04C2270/195—Controlled or regulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/86—Detection

Definitions

  • the invention relates to the field of cooling circuits for vehicles, in particular automobiles.
  • a cooling circuit for a motor vehicle such as that shown in figure 1 , comprises in particular at least one pump 12 ensuring the circulation of a cooling liquid, such as water, in the cooling circuit.
  • a cooling liquid such as water
  • a cooling circuit may further include a coolant reservoir 10, a heat exchanger 14 and at least one element 16 to be cooled, such as an engine of the vehicle.
  • Element 16 is equipped with a temperature sensor 20, the signals of which are transmitted to a unit 18 for controlling a proportional valve 22 making it possible to regulate the flow of coolant leaving the pump 12 and supplying the heat exchanger. heat 14.
  • the pump 12 is a centrifugal pump, that is to say it is a pump whose rotor is formed by a paddle wheel configured to suck liquid through the center and to push it back by its periphery.
  • the coolant flow rate at the outlet of the pump depends on the speed of rotation of the impeller but is not always constant and it is therefore necessary to associate the aforementioned proportional valve 22 with this type of pump.
  • the circuit would include other (auxiliary) pumps, these pumps would also be centrifugal pumps.
  • the present invention provides an improvement to this technology.
  • the invention relates to a cooling circuit for a vehicle, in particular a motor vehicle, this circuit comprising a pump comprising at least one rotor driven in rotation by a motor and configured to force the circulation of cooling liquid in the circuit, characterized in that said at least one rotor comprises at least one driving screw driven by said motor, and at least one driven screw driven by said at least one driving screw, the driving and driven screws being configured to force the circulation of liquid cooling in the circuit.
  • a screw pump makes it possible to provide an output flow rate proportional to the speed of rotation of the motor and which is canceled as soon as the pump is stopped.
  • a screw pump in a cooling circuit, it is therefore understood that it would be conceivable to eliminate the proportional valve necessary when using a centrifugal pump.
  • another advantage is linked to the small size of a screw pump compared to a centrifugal pump.
  • the power of a screw pump can for example be optimized by adapting the length, diameter and / or number of screws, while the power of a centrifugal pump can be optimized only by the diameter and thickness of its spinning wheel.
  • screws in the pump which are not made of metal but which are rather made of plastic or composite material, in order to reduce the weight of the pump and facilitate the production of these screws, for example by injection molding.
  • the number of driving screws and driven screws is not limiting and is determined as a function of the needs in terms of flow rate at the pump outlet in particular.
  • the present invention also relates to a vehicle, in particular a motor vehicle, comprising at least one circuit as described above.
  • the figure 2 illustrates a cooling circuit 24 within the meaning of the invention.
  • This circuit 24 comprises at least one screw pump 26.
  • the circuit 24 further comprises a reservoir 10 of cooling liquid.
  • the screw pump 26 and the reservoir 10 can be two separate elements connected by at least one pipe, or they can be mounted one on top of the other as in the example of figure 3 where the pump 26 is attached directly to the reservoir 10.
  • the pump 26 comprises an inlet 26a connected to the reservoir 10 or opening into this reservoir, and an outlet 26b.
  • the screw pump 26 is connected to a heat exchanger 14 and to an element 16 to be cooled.
  • the outlet 26b of the pump 26 is connected to an inlet 14a of the exchanger 14, an outlet 14b of which is connected to an inlet 16a of the element 16.
  • This element 16 comprises an outlet 16b connected to the inlet 26a of the pump. 26 or tank 10.
  • the element 16 is equipped with a temperature sensor 20, the signals of which are transmitted to a control unit 18 of the screw pump 26 in order to regulate the flow of coolant leaving the pump 12 and supplying the heat exchanger. heat 14.
  • a screw pump 26 includes at least one drive screw driven by a motor, and at least one driven screw driven by the drive screw (s), the drive screw (s) and driven screw (s) configured to force circulation of coolant in the circuit.
  • the figures 4 to 6 illustrate exemplary embodiments of a screw pump 26.
  • the pump 26 comprises a driving screw 28 and a driven screw 30.
  • the driving screw 28 has an elongated shape and comprises one end connected to a drive shaft 32 of the motor 33, which is for example an electric motor.
  • the screw 28 comprises a helical thread which extends substantially over its entire length.
  • the screw 28 is housed in a first central housing 34 of a cylindrical body 36 of the pump 26.
  • the driven screw 30 has an elongated shape and extends alongside the drive screw 28, parallel thereto.
  • the screw 30 comprises a helical thread which extends substantially over its entire length, and which is complementary to that of the screw 30 so that the screws are meshed and the screw 30 is driven in rotation by the screw 28 which is itself. even rotated by axis 32.
  • the screw 30 is housed in a second lateral housing 38 of the body 36.
  • the housings 34, 38 communicate with each other, as illustrated in the drawing.
  • the body 36 is fixed to one end of the motor 33, and comprises for example at one axial end an annular fixing flange 36a
  • the pump 26 comprises a driving screw 28 and three driven screws 30.
  • the driving screw 28 has an elongated shape and includes one end connected to the drive shaft 32 of the motor.
  • the screw 28 comprises a helical thread which extends substantially over its entire length.
  • the screw 28 is housed in a first central housing 34 of a cylindrical body 36 of the pump 26.
  • the driven screws 30 each have an elongated shape and extend adjacent to the drive screw 28, parallel thereto. They are regularly spaced from each other around the screw 28. Each screw 30 comprises a helical thread which extends substantially over its entire length, and which is complementary to that of the screw 30 so that the screws are meshed and each screw 30 is driven in rotation by the screw 28 which is itself driven in rotation by the axis 32.
  • the screws 30 are housed in side housings 38 of the body 36.
  • the housings 34, 38 communicate with each other, as illustrated in the drawing.
  • the body 36 is fixed in a cowling 40 which is fixed to one end of the engine.
  • This cowling 40 defines the inlet 26a and the outlet 26b of the pump 36.
  • the pump 26 comprises two driving screws 28 and two driven screws 30.
  • Each driving screw 28 has an elongated shape and comprises a helical thread which extends substantially over its entire length.
  • the driving screws 28 are arranged parallel and side by side, and housed in the first housings 34 of the body 36.
  • Each screw 28 carries at an axial end a pinion 42.
  • a toothed wheel 44 is disposed between the pinions 42 integral with the screws 28 and is meshed with the latter so as to form a gear train.
  • the toothed wheel 44 is mounted on the motor drive shaft (not visible) and drives the screws 28 via the pinions 42.
  • the driven screws 30 each have an elongated shape and extend adjacent to the drive screws 28, parallel thereto.
  • the axes of rotation of the screws 28, 30 are parallel and located for example on four corners of a parallelepiped.
  • Each screw 30 comprises a helical thread which extends substantially over its entire length, and which is complementary to that of the screw 28 so that the screws are meshed and each screw 30 is driven in rotation by one of the screws 28.
  • the screws 30 are housed in side housings 38 of the body 36.
  • the housings 34, 38 communicate with each other, as illustrated in the drawing.
  • the body 36 is mounted in a cowling 38 which is fixed to one end of the motor.
  • This cowling 36 defines the inlet and the outlet 26b of the pump 36.
  • the screws 28, 30 are advantageously made of plastic or composite material. They are for example produced by injection molding, which makes it possible to have screws of complex shape at a relatively limited cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
EP19206687.6A 2019-10-31 2019-10-31 Fahrzeugskühlkreislauf Pending EP3816446A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19206687.6A EP3816446A1 (de) 2019-10-31 2019-10-31 Fahrzeugskühlkreislauf
US17/772,078 US20220381178A1 (en) 2019-10-31 2020-10-14 Motor vehicle cooling circuit
CN202080074390.0A CN114585805A (zh) 2019-10-31 2020-10-14 机动车辆冷却回路
PCT/US2020/055467 WO2021086603A1 (en) 2019-10-31 2020-10-14 Motor vehicle cooling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19206687.6A EP3816446A1 (de) 2019-10-31 2019-10-31 Fahrzeugskühlkreislauf

Publications (1)

Publication Number Publication Date
EP3816446A1 true EP3816446A1 (de) 2021-05-05

Family

ID=68426179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19206687.6A Pending EP3816446A1 (de) 2019-10-31 2019-10-31 Fahrzeugskühlkreislauf

Country Status (4)

Country Link
US (1) US20220381178A1 (de)
EP (1) EP3816446A1 (de)
CN (1) CN114585805A (de)
WO (1) WO2021086603A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240239A1 (en) * 2022-06-10 2023-12-14 Illinois Tool Works Inc. Screw pump and its components
WO2023240238A1 (en) * 2022-06-10 2023-12-14 Illinois Tool Works Inc. Screw pump and its components

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3136525A1 (fr) * 2022-06-10 2023-12-15 Illinois Tool Works Pompe à vis et ses composants

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US20140303838A1 (en) * 2013-04-08 2014-10-09 Hyundai Motor Company Method for controlling water pump of vehicle and system thereof
US20150292504A1 (en) * 2012-11-05 2015-10-15 Jun Wang Induced hollow spiral driving apparatus
US20180216614A1 (en) * 2015-08-31 2018-08-02 Denso Corporation Screw pump

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FR2966876A1 (fr) * 2010-11-02 2012-05-04 Peugeot Citroen Automobiles Sa Agencement de pompe dans un moteur thermique, en particulier un moteur thermique de vehicule automobile
US20150292504A1 (en) * 2012-11-05 2015-10-15 Jun Wang Induced hollow spiral driving apparatus
US20140303838A1 (en) * 2013-04-08 2014-10-09 Hyundai Motor Company Method for controlling water pump of vehicle and system thereof
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240239A1 (en) * 2022-06-10 2023-12-14 Illinois Tool Works Inc. Screw pump and its components
WO2023240238A1 (en) * 2022-06-10 2023-12-14 Illinois Tool Works Inc. Screw pump and its components
FR3136521A1 (fr) * 2022-06-10 2023-12-15 Illinois Tool Works Pompe à vis et ses composants
FR3136524A1 (fr) * 2022-06-10 2023-12-15 Illinois Tool Works Pompe à vis et ses composants

Also Published As

Publication number Publication date
US20220381178A1 (en) 2022-12-01
WO2021086603A1 (en) 2021-05-06
CN114585805A (zh) 2022-06-03

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