US20130213325A1 - Water pump for vehicle - Google Patents

Water pump for vehicle Download PDF

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Publication number
US20130213325A1
US20130213325A1 US13/883,024 US201113883024A US2013213325A1 US 20130213325 A1 US20130213325 A1 US 20130213325A1 US 201113883024 A US201113883024 A US 201113883024A US 2013213325 A1 US2013213325 A1 US 2013213325A1
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US
United States
Prior art keywords
water pump
pump body
rotor
chamber
coolant
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.)
Abandoned
Application number
US13/883,024
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English (en)
Inventor
Byoung Soo Kim
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.)
Amotech Co Ltd
Original Assignee
Amotech Co Ltd
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 Amotech Co Ltd filed Critical Amotech Co Ltd
Assigned to AMOTECH CO., LTD. reassignment AMOTECH CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, BYOUNG SOO
Publication of US20130213325A1 publication Critical patent/US20130213325A1/en
Abandoned 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
    • 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0686—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0693—Details or arrangements of the wiring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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

Definitions

  • the present invention relates to an automotive water pump, and more particularly, to an automotive water pump in which regions of a rotor chamber and a driver chamber are formed and a stator and a connector are implemented into an integral pump body by an insert molding method, to thus enhance a waterproof performance of the water pump and enhance an assembly through simplification of an assembly structure.
  • the present invention relates to an automotive water pump in which the water pump is directly coupled with an engine block according to a case where a pump cover is combined with a pump body, or a case where the pump cover is not combined with the pump body.
  • An engine that is powered by combustion of fuels gets to a high temperature due to the temperature of combustion gases that are burnt within a cylinder, and thus essentially requires cooling in order to protect peripheral components of a combustion chamber included in the engine.
  • an automobile car is equipped with a water pump, to thus circulate cooling water as a coolant so that the engine is maintained at a proper temperature.
  • a water jacket is formed to allow a coolant to pass through a cylinder block and a cylinder head that are included in an engine for an automobile car, and a water pump for pumping a coolant to the water jacket is provided on one side of the front of the engine.
  • a radiator is formed in front of the water pump, to cool the coolant heated by the engine, and coolant hoses for the inflow and outflow of the coolant are connected between the radiator and the water jacket.
  • the coolant that flows out by the water pump is introduced into a water jacket that is provided in a cylinder block and a cylinder head of a high temperature, and is heated through a heat-exchange between the coolant and the high temperature cylinder block and head. Then, the heated coolant undergoes a heat dissipation process in a radiator, to then flow in the water pump. Such a coolant circulating process is repeated.
  • the water pump is classified into a mechanical pump that receives a driving force of an engine via a belt or chain and thus is driven, and an electronic pump that is rotated by driving of a motor.
  • the mechanical water pump is connected to a pulley fixed to a crankshaft of the engine and is driven depending on rotation of the crankshaft, that is, rotation of the engine.
  • a flow rate of a coolant that flows out from a mechanical water pump is determined depending on the rotational speed of the engine.
  • a flow rate of a coolant that is required for a heater and a radiator is constant regardless of the rotational speed of the engine.
  • the electronic water pump is driven by rotation of the motor that is controlled by a control device.
  • the electronic water pump can determine a flow rate of the coolant regardless of the rotational speed of the engine, the electronic water pump is recently spotlighted compared to the mechanical water pump.
  • a conventional electronic water pump uses a mechanical seal for sealing a pump motor in order to prevent bearing failure and shortening of the life span of belts, due to the external drainage of water inside the water pump or coolant leak.
  • This requires a post-process of mounting a separate mechanical seal in a water pump, to thus cause a prime cost rising factor of a motor due to the rise of a processing cost and a material cost.
  • the electronic water pump is configured to have a rotor chamber, a stator chamber, and a driver chamber of a pump body, respectively, on a dual basis.
  • a drive case is combined with the pump body, and then a driver cover is assembled with a driver case, to thereby implement the rotor chamber, the stator chamber, and the driver chamber, respectively.
  • the conventional water pump requires coolant hoses for the inflow and outflow of the coolant between the radiator and water jacket, and thus the coolant hoses need to be replaced at the time of occurrence of the coolant hoses damaged due to vibration or impact according to driving of an automobile car.
  • an object of the present invention to provide an automotive water pump in which regions of a rotor chamber and a driver chamber are formed and a stator and a connector are implemented into an integral pump body by an insert molding method, to thus enhance a waterproof performance of the water pump and enhance an assembly through simplification of an assembly structure.
  • an automotive water pump comprising:
  • the automotive water pump further comprises a pump cover that comprises a volute chamber that is directly coupled to the pump body to thus guide a flow of the coolant, and that pressurizes the coolant by rotation of the impeller.
  • the pump cover is inserted into the inside of an engine block.
  • the engine block comprises the volute chamber that is directly coupled to the pump body to thus guide a flow of the coolant, and that pressurizes the coolant by rotation of the impeller.
  • the pump body is molded by using a single material of polyphenylene sulfide (PPS) or bulk molding compound (BMC), with an insert molding method.
  • PPS polyphenylene sulfide
  • BMC bulk molding compound
  • the rotor primarily fixes a back yoke and a permanent magnet by a rotor cover, and then secondarily surrounds and fixes the back yoke and an outer circumferential surface of the back yoke by insert molding the BMC.
  • bearings are inserted into and combined with top and bottom portions of the rotating assembly when the rotating assembly are coupled with the rotor chamber.
  • an automotive water pump comprising:
  • the automotive water pump further comprises a pump cover that comprises a volute chamber that is directly coupled to the pump body to thus guide a flow of the coolant, and that pressurizes the coolant by rotation of the impeller.
  • the stator core comprises a fastening hole passing through a portion of the stator core exposed to the outside of the pump body, to thus be coupled directly to the engine block.
  • the stator core comprises a fastening hole passing through a portion of the stator core exposed to the outside of the pump body, to thus be coupled directly to the engine block, and the engine block comprises the volute chamber that guides a flow of the coolant, and that pressurizes the coolant by rotation of the impeller.
  • the pump body is molded by using a single material of polyphenylene sulfide (PPS) or bulk molding compound (BMC), with an insert molding method.
  • PPS polyphenylene sulfide
  • BMC bulk molding compound
  • the stator core comprises through-holes or outer circumferential grooves into which a molding material of polyphenylene sulfide (PPS) or bulk molding compound (BMC) is filled at the time of performing an insert molding method, to then be fixed to the pump body.
  • PPS polyphenylene sulfide
  • BMC bulk molding compound
  • the rotor primarily fixes a back yoke and a permanent magnet by a rotor cover, and then secondarily surrounds and fixes the back yoke and an outer circumferential surface of the back yoke by insert molding the BMC.
  • bearings are inserted into and combined with top and bottom portions of the rotating assembly when the rotating assembly are coupled with the rotor chamber.
  • an automotive water pump according to the present invention provides an effect of enhancing a waterproof performance of the water pump and enhancing an assembly through simplification of an assembly structure in which regions of a rotor chamber and a driver chamber are formed and a stator and a connector are implemented into an integral pump body by an insert molding method.
  • a water pump is manufactured without inserting a separate canned cover by providing a rotor chamber corresponding to a canned structure as a pump body, to thereby provide an effect of reducing a cost increasing factor due to a rise in a processing cost and a material cost.
  • a stator is externally extended, to thus maximize a heat dissipation effect, and a stable support structure is simultaneously established in order to be mounted with an engine block to thereby promote improvement of assembly.
  • a water pump is directly combined with an engine block, to thus have an effect of circulating a coolant without having any coolant hoses.
  • FIG. 1A is a cross-sectional view of a water pump employing a waterproof structure according to a first embodiment of the present invention.
  • FIG. 1B is a decomposition cross-sectional view of the water pump of FIG. 1A .
  • FIG. 1C is a plan view of a pump body in the water pump of FIG. 1A .
  • FIG. 2A is a cross-sectional view of a water pump employing a waterproof structure according to a modified embodiment of the first embodiment of the present invention.
  • FIG. 2B is a plan view of a pump body in the water pump of FIG. 2A .
  • FIG. 3A is a cross-sectional view of a water pump employing a waterproof structure according to a second embodiment of the present invention.
  • FIG. 3B is a plan view of a pump body in the water pump of FIG. 3A .
  • FIG. 4A is a cross-sectional view of a water pump employing a waterproof structure according to a modified embodiment of the second embodiment of the present invention.
  • FIG. 4B is a plan view of a pump body in the water pump of FIG. 4A .
  • FIG. 1A is a cross-sectional view of a water pump employing a waterproof structure according to a first embodiment of the present invention.
  • FIG. 1B is a decomposition cross-sectional view of the water pump of FIG. 1A .
  • FIG. 1C is a plan view of a pump body in the water pump of FIG. 1A .
  • FIGS. 1A and 1B are cross-sectional views taken along line A-A′ of FIG. 1C .
  • a water pump employing a waterproof structure includes a pump body 110 , a pump cover 120 , a driver cover 130 , a stator 140 , a rotor 150 , a rotating assembly 160 , and a driver 170 .
  • the water pump according to the first embodiment has a waterproof structure in which a canned cover is not basically inserted, and is molded in an integral structure into the pump body 110 of a single material (for example, polyphenylene sulfide (PPS), bulk molding compound (BMC) and the like) through an insert molding method.
  • a single material for example, polyphenylene sulfide (PPS), bulk molding compound (BMC) and the like
  • the water pump is configured so that the pump cover 120 is not only directly coupled to the pump body 110 made of a single material, but an engine block 180 is also directly coupled to the pump body 110 without passing through a predetermined connecting tube.
  • polyphenylene sulfide (PPS) is a kind of a thermoplastic resin, and has heat resistance, chemical resistance, flame resistance, and excellent electrical properties, and mineral affinity.
  • the pump body 110 has a top and bottom open structure, but regions formed at the top and bottom of the pump body 110 are independent spaces without penetrating through each other, and form part of a rotor chamber (RC) and a driver chamber (DC), respectively.
  • the pump body 110 does not form a series of a stator chamber, the rotor chamber (RC) and the driver chamber (DC), by combining a driver case at the bottom of the pump body 110 as an additional work and then assembling a driver cover with the pump body 110 , but forms some structures for configuration of chambers in an integral form, as a result of a molding process of a single material and a single configuration as described above.
  • the pump body 110 is integrally molded with the stator 140 through an insert molding method, in the case of the stator chamber, and forms some structures for configuration of a rotor chamber (RC) at a top opening portion in the case of the rotor chamber (RC), and forms some structures for configuration of a driver chamber (DC) at a bottom opening portion in the case of the driver chamber (DC).
  • a rotor chamber RC
  • DC driver chamber
  • the rotor chamber RC and the driver chamber DC are formed in an independent space, respectively, on the top and bottom portions of the pump body 110 . Accordingly, even though a coolant is introduced into the rotor chamber RC, the driver chamber DC is guaranteed to have a shielding function so that the coolant does not leak from the rotor chamber RC. In particular, even if a canned cover is not inserted, the rotor chamber RC is formed to have a box on an outer edge of the rotor 150 , as a result of molding the pump body 110 , to thereby form a structure corresponding to the canned cover that can seal the rotor 150 so as to be immersed in the coolant.
  • the rotor chamber RC accommodates a rotating assembly 160 to which the rotor 150 is fixed
  • the driver chamber DC accommodates a printed circuit board (PCB) 172 of a driver 170
  • the pump body 110 is molded with a connector 171 of the driver 170 in an integral structure through an insert molding method.
  • the PCB 172 is connected to the connector 171 through a connector pin 171 a.
  • the pump body 110 is combined with a pump cover 120 on the top portion of the pump body 110 after the rotating assembly 160 to which the rotor 150 has been fixed has been accommodated in the rotor chamber RC.
  • the pump body 110 is combined with the pump cover 120 using a screw or bolt 113 a.
  • a through-hole is formed on the pump body 110 and the pump cover 120 , respectively, in order to couple the pump body 110 and the pump cover 120 with each other.
  • a first O-ring groove 114 a of a trench structure is formed in the pump body 110 in order to place a first O-ring 114 for sealing between the pump body 110 and the pump cover 120 .
  • the pump body 110 that has been combined with the pump cover 120 is combined with the engine block 180 .
  • the pump body 110 is formed to have a flange of a rectangular shape extending to the side surfaces on which the engine block 180 is combined.
  • Metal stud nuts 113 c are integrally formed at corners of the rectangular flange of the pump body 110 , respectively, in order to achieve a strong coupling with the engine block 180 .
  • the pump body 110 is combined with the engine block 180 by fastening screws or bolts 113 b with the stud nuts.
  • the pump body 110 is combined with a driver cover 130 on the bottom portion of the pump body 110 after the printed circuit board (PCB) 172 of the driver 170 has been accommodated in the driver chamber DC.
  • the pump body 110 is combined with the driver cover 130 using a screw or bolt 113 d .
  • extension portions 115 a and 115 b are respectively formed in the pump body 110 and the driver cover 130 , in order to form through-holes for coupling the pump body 110 and the driver cover 130 with each other.
  • a second O-ring groove 116 a of a trench structure is formed in the pump body 110 in order to place a second O-ring 116 for sealing between the pump body 110 and the driver cover 130 .
  • the pump cover 120 is in charge of a function of a path through which a coolant flows, to thereby guide a flow of the coolant from the engine to a radiator.
  • a pump cover inlet 121 connected to the engine and a pump cover outlet 122 connected to the radiator are extended to a predetermined length, respectively.
  • the pump cover 120 is formed to have the pump cover inlet 121 connected to the engine on the top portion of the pump cover 120 , to thus make the coolant introduced from the engine, and to have the pump cover outlet 122 connected to the radiator on the side portion of the pump cover 120 , to thus make the coolant pressurized by rotation of an impeller 162 discharged to the radiator.
  • the pump cover 120 is formed to have the pump cover outlet 122 whose opening is narrower than that of the pump cover inlet 121 , to thus pressurize the coolant and to thereby improve a heat dissipation effect.
  • the pump cover 120 is formed to have a coolant circulating path through a coupling with the pump body 110 , and to have a volute chamber VC that pressurizes the coolant by rotation of the impeller 162 inside the pump cover 120 .
  • the driver cover 130 is coupled to a bottom opening portion of the pump body 110 .
  • the driver cover 130 is coupled closely to the pump body 110 , after a second O-ring 116 is inserted into a second O-ring groove 116 a that is protrudingly formed on a surface on which the pump body 110 is combined.
  • the driver cover 130 is preferably made of an aluminum material in order to externally dissipate heat generated from the driver 170 .
  • the stator 140 is built in the pump body 110 and then is integrally molded. Accordingly, the stator 140 is not only mounted in a separate stator chamber, but is also guaranteed to have a shielding function against a leakage of the coolant.
  • the stator 140 includes a stator core 141 , a bobbin 142 , and a coil 143 .
  • the stator 140 is formed through processes of: combining a stator core 141 formed of a plurality of laminated thin films made of a magnetic material with a bobbin 142 made of an insulating resin and then winding a coil 143 on an outer circumference of the bobbin 142 .
  • the bobbin 142 may be achieved into a structure that upper and lower bobbins are combined with each other, or may be integrally formed on an outer circumferential surface thereof by insert molding the stator core 141 .
  • stator 140 is molded when the stator 140 is housed and integrally formed in the pump body 110 , together with a connection line to the PCB 172 for applying drive signals to a Hall sensor substrate for detecting position of the rotor 150 and the coil 143 , respectively.
  • the rotor 150 includes a back yoke 151 , permanent magnets 152 , rotor covers 153 , and a rotor case 154 .
  • the rotor 150 is formed to have a number of N-pole and S-pole permanent magnets 152 that are alternately mounted on an outer circumferential surface of the back yoke 151 fixed to a rotating shaft 151 .
  • a plurality of grooves are formed lengthily on the outer circumferential surface of the back yoke 151 , and thus the permanent magnets 152 are inserted and mounted into the grooves (not shown).
  • the rotor covers 153 are provided to pressurize the top and bottom portions of the back yoke 151 and the permanent magnets 152 , to thus primarily fix the back yoke 151 and the permanent magnets 152 , at a state where the permanent magnets 152 have been inserted into the back yoke 151 .
  • the rotor covers 153 are made of copper or stainless steel whose specific gravity is large, and are made considering a function of a balance weight to balance the external forces exerted by rotation of the rotor 150 .
  • the rotor case 154 surrounds the outer circumferential surfaces of the permanent magnets 152 , to thus secondarily fix the back yoke 151 and the permanent magnets 152 , at a state where the rotor covers 153 have pressurized the top and bottom portions of the back yoke 151 and the permanent magnets 152 .
  • the rotor case 153 is manufactured by insert molding a bulk molding compound (BMC) as a complex raw material including a low shrinkage potassium-based material.
  • BMC bulk molding compound
  • the rotor case 153 does not only fix the back yoke 151 and the permanent magnets 152 , but also takes charge of a sealing function for a coolant of the rotor 150 .
  • the rotor 150 is formed to doubly fix the back yoke 151 and the permanent magnets 152 by the rotor covers 153 and the rotor case 154 , to thereby prevent the permanent magnets 152 from seceding from the back yoke 151 .
  • the rotor 150 has a heat generating characteristic according to rotation of the rotor 150 , and may be continuously cooled by a coolant flowing in the rotor chamber RC.
  • the permanent-magnets 152 of a split piece structure have been used, but a number of N-pole and S-pole split magnetized ring-shaped permanent magnets may be also used.
  • the rotating assembly 160 is formed by an assembly of the rotor 150 and an impeller 162 with respect to the rotating shaft 161 , in which the impeller 162 fixed to the rotating shaft 161 is rotated together due to the rotation of the rotor 150 opposite to the stator 140 .
  • the central axis of the rotating shaft 161 becomes a basis of axial alignment with respect to the center of the stator 140 that is a fixed element and the centers of the rotor 150 and the impeller 162 that are rotating elements.
  • the central axis of the rotating shaft 161 is the basis for preventing misalignment of the center axes of the fixed element and the rotating elements to thereby suppress vibration and noise that may occur at the time of operation of a water pump.
  • first and second bearings 111 and 112 are combined to support and facilitate the rotation of the rotating shaft 161 .
  • the first bearing 111 may be formed of a pair of semi-circular structures, and may be detachably coupled to the rotating shaft 161 at a state of completion of the rotating assembly 160 , or may be formed of an ordinary circular structure and may be coupled to the rotating shaft 161 in advance before assembling the impeller 162 with the rotating shaft 161 .
  • the second bearing 112 may be pressingly fitted into the pump body 110 in a pair of semi-circular structure, or an ordinary circular structure, and then may be coupled to the rotating shaft 161 when the rotating assembly 160 is assembled in the rotor chamber RC of the pump body 110 .
  • mounting holes (not shown) into which the first and second bearings 111 and 112 are fitted may be formal on the outer circumferential surface of the rotating shaft 161 .
  • the impeller 162 is fixed to the rotating shaft 161 by an axial screw 163 , and includes a plurality of wings with a downward slope outwardly from the central axis corresponding to bending regions of the pump cover 120 .
  • the impeller 162 takes charge of pressurizing a coolant introduced from the pump cover inlet 121 through high-speed rotation thereof, and discharging the introduced coolant via the pump cover outlet 122 .
  • the driver 170 includes a connector 171 to which a connector pin 171 a is connected, and a printed circuit board (PCB) 172 in which a motor driving circuit is mounted.
  • the connector pin 171 a is extended in the inside of a connector housing that is formed integrally with the pump body 110 , to thus configure the connector 171 .
  • the PCB 172 is electrically connected to an external power source through the connector pin 171 a, and receives a control signal applied from an external controller and a position signal from a Hall sensor, to thereby control operation of the water pump.
  • the PCB 172 is coupled in the pump body 110 through a screw coupling or a snap coupling.
  • the pump body 110 is formed by insert molding the stator 140 and the connector 171 in a single configuration and with a single material.
  • the rotating assembly 160 is formed into a complete body in which the rotor 150 and the impeller 162 are combined with the rotating shaft 161 .
  • the rotating assembly 160 is combined and assembled in the rotor chamber RC formed at the top of the pump body 110 , together with the first and second bearings 111 and 112 , and the pump cover 120 is coupled to the pump body 110 at a state where the rotating assembly 160 has been assembled in the rotor chamber RC of the pump body 110 .
  • the PCB 172 of the driver 170 is mounted in the driver chamber DC formed at the bottom of the pump body 110 .
  • the driver cover 130 is coupled to the pump body 110 at a state where the PCB 172 has been assembled in the driver chamber DC of the pump body 110 .
  • the finally completed water pump is directly combined to the engine block 180 , to thus finalize an assembly of the water pump.
  • a third O-ring 117 is inserted between the pump cover 120 and the engine block 180 , to thus guarantee sealing performance.
  • the third O-ring 117 is inserted at a time of combining the pump cover 120 and the engine block 180 , to thus form a space for closely adhering the pump cover 120 and the engine block 180 .
  • the engine block 180 is formed to have a stepped structure in correspondence to bending regions of the pump cover 120 (see FIG. 1A ).
  • FIG. 2A is a cross-sectional view of a water pump employing a waterproof structure according to a modified embodiment of the first embodiment of the present invention.
  • FIG. 2B is a plan view of a pump body in the water pump of FIG. 2A .
  • FIG. 2A is a cross-sectional view taken along line B-B′ of FIG. 2B .
  • a water pump according to a modified embodiment of the first embodiment of the present invention is obtained by removing a pump cover 120 from the water pump according to the first embodiment of the present invention, in which a coolant path structure of the pump cover 120 is implemented in an engine block 280 , to thus allow the engine block 280 to take charge of a function of the pump cover 120 in the water pump according to the first embodiment.
  • the water pump according to the modified embodiment of the first embodiment includes a pump body 210 , a driver cover 230 , a stator 240 , a rotor 250 , a rotating assembly 260 , and a driver 270 .
  • the stator 240 includes a stator core 241 , a bobbin 242 , and a coil 243
  • the rotor 250 includes a back yoke 251 , permanent magnets 252 , rotor covers 253 , and a rotor case 254 .
  • the rotating assembly 260 includes the rotor 250 , a rotating shaft 261 , and an impeller 262
  • the driver 270 includes a connector 271 , a connector pin 271 a , and a PCB 272 .
  • the pump body 210 has a structure having no pump cover, no holes for coupling the pump cover are formed in the pump body 210 . Accordingly, an O-ring 214 that corresponds to the first O-ring 114 is placed between the engine block 280 and the pump body 210 .
  • the engine block 280 is formed to have a coolant path therein on behalf of the pump cover 120 of the water pump according to the first embodiment.
  • the engine block 280 guides a flow of the coolant from the engine to the radiator, and to this end, an engine block inlet 281 connected to the engine and an engine block outlet 282 connected to the radiator are formed in the engine block.
  • the engine block 280 is coupled with the pump body 210 using a screw or bolt 213 b, and a stud nut 213 c, to thus form a volute chamber VC that pressurizes a coolant by rotation of the impeller 262 .
  • a process for assembling the water pump will be briefly described below.
  • the rotating assembly 260 is combined and assembled in the rotor chamber RC formed on the top of the pump body 210 , together with first and second bearings 211 and 212 .
  • the PCB 272 of the driver 270 is mounted in the driver chamber DC formed at the bottom Of the pump body 210 .
  • the driver cover 230 is coupled to the pump body 210 at a state where the PCB 272 has been assembled in the driver chamber DC of the pump body 210 .
  • the finally completed water pump is directly combined to the engine block 280 , to thus finalize an assembly of the water pump.
  • FIG. 3A is a cross-sectional view of a water pump employing a waterproof structure according to a second embodiment of the present invention.
  • FIG. 3B is a plan view of a pump body in the water pump of FIG. 3A .
  • FIG. 3A is a cross-sectional view taken along line C-C′ of FIG. 3B .
  • a water pump according to the second embodiment has a structure that a stator core 341 of a stator 340 is extended from the water pump according to the first embodiment, and is exposed to the outside of the pump body 310 , in which a corresponding stator core 341 is coupled to the engine block 380 instead of the pump body 310 .
  • the water pump according to the second embodiment includes a pump body 310 , a pump cover 320 , a driver cover 330 , a stator 340 , a rotor 350 , a rotating assembly 360 , and a driver 370 .
  • the stator 340 includes a stator core 341 , a bobbin 342 , and a coil 343
  • the rotor 350 includes a back yoke 351 , permanent magnets 352 , rotor covers 353 , and a rotor case 354 .
  • the rotating assembly 360 includes the rotor 350 , a rotating shaft 361 , and an impeller 362
  • the driver 370 includes a connector 371 , a connector pin 371 a , and a PCB 372 .
  • the stator 340 is molded to have the stator core 341 of a rectangular shape that is exposed to the outside of the pump body 310 and housed partially in the pump body 310 . Accordingly, the stator core 341 is formed so that a portion whose portion is housed in the inside of the pump body 310 and combined with the bobbin 342 around which the coil 343 is wound, and a portion that is exposed to the outside of the pump body 310 and is coupled with the engine block 380 , are integrally fabricated with each other.
  • the stator core 341 is formed to have a through-hole 341 a through which a molding material may be inserted into the inside of the pump body 310 . Accordingly, even though the pump body 310 is exposed to the outside, the stator core 341 may be fixed to the pump body 310 . Also, the stator core 341 is formed to have a coupling hole 341 b through which the stator core 341 may be coupled to the engine block 380 by a screw or bolt 313 b.
  • stator core 341 is directly coupled to the engine block 380 , using the screw or bolt 313 b, to thus dissipate heat generated from the coil 343 depending on the driving of the motor, as well as to achieve a strong coupling with the engine, and to take advantage of the direct coupling between the stator core 341 and the engine block 380 as the ground of the coil 343 , to thereby discharge electromagnetic noise externally.
  • the rotating assembly 360 is combined and assembled in the rotor chamber RC formed on the top of the pump body 310 , together with first and second bearings 311 and 312 .
  • the pump cover 320 is coupled to the pump body 310 at a state Where the rotating assembly 360 has been assembled in the rotor chamber RC of the pump body 310 .
  • the PCB 372 of the driver 370 is mounted in the driver chamber DC formed at the bottom of the pump body 310 .
  • the driver cover 330 is coupled to the pump body 310 at a state where the PCB 372 has been assembled in the driver chamber DC of the pump body 310 .
  • the finally completed water pump is completely assembled in a manner that a coupler 313 b that penetrates the stator core 341 exposed to the outside is directly combined to the engine block 380 .
  • FIG. 4A is a cross-sectional view of a water pump employing a waterproof structure according to a modified embodiment of the second embodiment of the present invention.
  • FIG. 4B is a plan view of a pump body in the water pump of FIG. 4A .
  • FIG. 4A is a cross-sectional view taken along line D-D′ of FIG. 4B .
  • a water pump according to the modified embodiment of the second embodiment of the present invention is obtained by removing a pump cover 320 from the water pump according to the second embodiment of the present invention, in which a coolant path structure of the pump cover 120 is implemented in an engine block 480 , to thus allow the engine block 480 to take charge of a function of the pump cover 320 in the water pump according to the second embodiment.
  • the water pump according to the modified embodiment of the second embodiment includes a pump body 410 , a driver cover 430 , a stator 440 , a rotor 450 , a rotating assembly 460 , and a driver 470 .
  • the stator 440 includes a stator core 441 , a bobbin 442 , and a coil 443
  • the rotor 450 includes a back yoke 451 , permanent magnets 452 , rotor covers 453 , and a rotor case 454 .
  • the rotating assembly 460 includes the rotor 450 , a rotating shaft 461 , and an impeller 462
  • the driver 470 includes a connector 471 , a connector pin 471 a, and a PCB 472 .
  • the pump body 410 has a structure having no pump cover 320 of FIG. 3A , no holes for coupling the pump cover are formed in the pump body 410 .
  • the engine block 480 is formed to have a coolant path therein on behalf of the pump cover 320 of FIG. 3A ,
  • the engine block 480 guides a flow of the coolant from the engine to the radiator, and to this end, an engine block inlet 481 connected to the engine and an engine block outlet 482 connected to the radiator are formed in the engine block.
  • the engine block 480 is coupled with the pump body 410 , to thus form a volute chamber VC that pressurizes a coolant by rotation of the impeller 462 .
  • the stator 440 is molded to have the stator core 441 that is exposed to the outside of the pump body 410 and housed partially in the pump body 410 , Accordingly, the stator core 441 is formed so that a portion whose portion is housed in the inside of the pump body 410 and combined with the bobbin 442 around which the coil 443 is wound, and a portion that is exposed to the outside of the pump body 410 and is coupled with the engine block 480 , are integrally fabricated with each other.
  • the stator core 441 may be formed in a rectangular shape as shown in FIGS. 3A and 38 , but the stator core 441 may be formed in a rectangular structure in which outer circumferential grooves 441 a are formed in the stator core 441 and a molding material for the pump body 410 is inserted into the outer circumferential grooves 441 a.
  • the stator core 441 is formed so that the molding material for the pump body 410 may be filled in the inserted into the outer circumferential grooves 441 a . Accordingly, even though the pump body 410 is exposed to the outside, the stator core 441 may be fixed to the pump body 410 .
  • the stator core 441 is formed to have a coupling hole 441 b through which the stator core 441 may be coupled to the engine block 480 by a screw or bolt 413 b.
  • the rotating assembly 460 is combined and assembled in the rotor chamber RC formed on the top of the pump body 410 , together with first and second bearings 411 and 412 .
  • the PCB 472 of the driver 470 is mounted in the driver chamber DC formed at the bottom of the pump body 410 .
  • the driver cover 430 is coupled to the pump body 410 at a state where the PCB 472 has been assembled in the driver chamber DC of the pump body 410 .
  • the finally completed water pump is completely assembled in a manner that a coupler 413 b that penetrates the stator core 441 exposed to the outside is directly combined to the engine block 480 .
  • the upper portions of the pump bodies 310 and 410 are inserted and mounted in the inside of the engine blocks 380 and 480 , respectively, to thereby implement a water pump of a compact structure as a whole.
  • the present invention can be applied for an automotive water pump in which regions of a rotor chamber and a driver chamber are formed and a stator and a connector are implemented into an integral pump body by an insert molding method, to thus enhance a waterproof performance of the water pump and enhance an assembly through simplification of an assembly structure.

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  • 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)
US13/883,024 2010-11-10 2011-11-10 Water pump for vehicle Abandoned US20130213325A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020100111646A KR101256198B1 (ko) 2010-11-10 2010-11-10 자동차용 워터 펌프
KR10-2010-0111646 2010-11-10
PCT/KR2011/008547 WO2012064119A2 (fr) 2010-11-10 2011-11-10 Pompe à eau pour véhicule

Publications (1)

Publication Number Publication Date
US20130213325A1 true US20130213325A1 (en) 2013-08-22

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ID=46051429

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US13/883,024 Abandoned US20130213325A1 (en) 2010-11-10 2011-11-10 Water pump for vehicle

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US (1) US20130213325A1 (fr)
KR (1) KR101256198B1 (fr)
WO (1) WO2012064119A2 (fr)

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JP2015129484A (ja) * 2014-01-08 2015-07-16 アイシン精機株式会社 ウォーターポンプ
EP3109477A1 (fr) * 2015-06-26 2016-12-28 Panasonic Intellectual Property Management Co., Ltd. Pompe à moteur à gaine et procédé de fabrication d'une telle pompe
US20170054334A1 (en) * 2014-02-12 2017-02-23 BSH Hausgeräte GmbH Electric drive motor, pump, and a domestic appliance comprising such a pump
US20170058915A1 (en) * 2015-08-26 2017-03-02 Johnson Electric S.A. Electric Coolant Pump
CN108372781A (zh) * 2018-04-03 2018-08-07 阜新德尔汽车部件股份有限公司 车用智能热控制系统
CN110873062A (zh) * 2018-08-31 2020-03-10 广东威灵汽车部件有限公司 电子水泵及其机壳组件
US20210083558A1 (en) * 2019-09-16 2021-03-18 Coavis Motor integrated with control unit and water pump having the same
WO2021086742A1 (fr) * 2019-10-30 2021-05-06 Flowserve Management Company Pompe ou turbine compacte, modulaire, à moteur ou générateur modulaire intégré et écoulement de fluide coaxial
US20210131448A1 (en) * 2018-08-31 2021-05-06 Guangdong Welling Auto Parts Co., Ltd. Electronic water pump and housing assembly thereof
US20210257874A1 (en) * 2020-02-13 2021-08-19 Shinano Kenshi Co., Ltd. Electric pump
US11323003B2 (en) * 2017-10-25 2022-05-03 Flowserve Management Company Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow
US11371519B2 (en) * 2017-11-13 2022-06-28 Hanon Systems Efp Deutschland Gmbh Water pump and method for manufacturing a water pump

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KR101366920B1 (ko) * 2013-01-31 2014-02-25 영신정공 주식회사 돔형 토출구를 구비한 전동식 워터펌프 및 이를 갖는 자동차 열 회수 장치
KR101332853B1 (ko) * 2013-05-09 2013-11-27 엔엔엔코리아(주) 냉각부재를 내장한 자동차용 전동식 워터펌프
KR101423294B1 (ko) * 2013-11-01 2014-07-25 주식회사 지트리비앤티 온수순환용 펌프
KR101631743B1 (ko) 2014-04-15 2016-06-20 명화공업주식회사 마찰 부하를 줄일 수 있는 차량용 냉각수 펌프
CN104564704B (zh) * 2014-12-23 2017-09-01 中山市固邦电器有限公司 一种环保空调专用排水泵
CN106321217B (zh) * 2015-06-18 2020-06-05 浙江三花汽车零部件有限公司 电驱动泵及其制造方法
CN106487167B (zh) * 2015-08-26 2020-08-18 浙江三花汽车零部件有限公司 电子泵
KR101627472B1 (ko) 2015-11-13 2016-06-03 지엠비코리아 주식회사 임펠러 조립체 및 임펠러 조립체의 제조방법
KR101939282B1 (ko) * 2017-12-13 2019-01-18 (주)씨에스이 Free-end play-free 타입의 bldc 펌프
CN113027781A (zh) * 2021-01-27 2021-06-25 芜湖飞龙汽车电子技术研究院有限公司 一种电子水泵快速测试工装及其使用方法

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015104866A1 (fr) * 2014-01-08 2015-07-16 アイシン精機株式会社 Pompe à eau
CN105899813A (zh) * 2014-01-08 2016-08-24 爱信精机株式会社 水泵
JP2015129484A (ja) * 2014-01-08 2015-07-16 アイシン精機株式会社 ウォーターポンプ
US20170054334A1 (en) * 2014-02-12 2017-02-23 BSH Hausgeräte GmbH Electric drive motor, pump, and a domestic appliance comprising such a pump
EP3109477A1 (fr) * 2015-06-26 2016-12-28 Panasonic Intellectual Property Management Co., Ltd. Pompe à moteur à gaine et procédé de fabrication d'une telle pompe
US10415590B2 (en) * 2015-08-26 2019-09-17 Johnson Electric International AG Electric coolant pump
US20170058915A1 (en) * 2015-08-26 2017-03-02 Johnson Electric S.A. Electric Coolant Pump
CN106481567A (zh) * 2015-08-26 2017-03-08 德昌电机(深圳)有限公司 电动液泵
US11323003B2 (en) * 2017-10-25 2022-05-03 Flowserve Management Company Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow
US11371519B2 (en) * 2017-11-13 2022-06-28 Hanon Systems Efp Deutschland Gmbh Water pump and method for manufacturing a water pump
CN108372781A (zh) * 2018-04-03 2018-08-07 阜新德尔汽车部件股份有限公司 车用智能热控制系统
CN110873062A (zh) * 2018-08-31 2020-03-10 广东威灵汽车部件有限公司 电子水泵及其机壳组件
US20210131448A1 (en) * 2018-08-31 2021-05-06 Guangdong Welling Auto Parts Co., Ltd. Electronic water pump and housing assembly thereof
EP3800355A4 (fr) * 2018-08-31 2021-08-04 Guangdong Welling Auto Parts Co., Ltd. Pompe à eau électronique et ensemble boîtier associé
US12078191B2 (en) * 2018-08-31 2024-09-03 Guangdong Welling Auto Parts Co., Ltd. Electronic water pump and housing assembly thereof
US20210083558A1 (en) * 2019-09-16 2021-03-18 Coavis Motor integrated with control unit and water pump having the same
US11848588B2 (en) * 2019-09-16 2023-12-19 Coavis Motor integrated with control unit and water pump having the same
WO2021086742A1 (fr) * 2019-10-30 2021-05-06 Flowserve Management Company Pompe ou turbine compacte, modulaire, à moteur ou générateur modulaire intégré et écoulement de fluide coaxial
US20210257874A1 (en) * 2020-02-13 2021-08-19 Shinano Kenshi Co., Ltd. Electric pump
US11870315B2 (en) * 2020-02-13 2024-01-09 Shinano Kenshi Co., Ltd. Electric pump

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WO2012064119A2 (fr) 2012-05-18
KR20120050239A (ko) 2012-05-18
WO2012064119A3 (fr) 2012-07-26
KR101256198B1 (ko) 2013-04-19

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