US20160047394A1 - Electric water pump with coolant passage - Google Patents
Electric water pump with coolant passage Download PDFInfo
- Publication number
- US20160047394A1 US20160047394A1 US14/558,605 US201414558605A US2016047394A1 US 20160047394 A1 US20160047394 A1 US 20160047394A1 US 201414558605 A US201414558605 A US 201414558605A US 2016047394 A1 US2016047394 A1 US 2016047394A1
- Authority
- US
- United States
- Prior art keywords
- room
- water pump
- cooling passage
- electric water
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000002826 coolant Substances 0.000 title claims abstract description 48
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 60
- 238000000926 separation method Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Images
Classifications
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal 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
Definitions
- the present disclosure relates to an electric water pump, and more particularly, to an electric water pump having a separate coolant flow passage.
- a water pump of a vehicle circulates a coolant through an engine, a heater, etc. for cooling the engine and heating an inside of the vehicle.
- the coolant in the water pump recirculates after discharged from the water pump and exchanging heat with the engine, the heater, a radiator, or the like.
- the water pump is classified largely into a mechanical water pump and an electric water pump.
- the mechanical water pump operates according to rotation of a crankshaft, i.e., an engine revolutions per minute (RPM) by being connected with a pulley fixed to the crankshaft of the engine. Therefore, a flow rate of the coolant discharged from the mechanical water pump is determined according to the engine RPM.
- RPM revolutions per minute
- the flow rate of the coolant necessary for the heater, the radiator, etc. is determined without relation to the engine RPM.
- the engine speed needs to be increased for a normal operation of the heater and the radiator, thus increasing fuel consumption.
- the electric water pump operates by a motor controlled through a controller. Therefore, the electric water pump can determine the flow rate of the coolant, regardless of the engine RPM.
- waterproof function is required for components used in the electric water pump to improve performance and durability of the electric water pump.
- the electric water pump requires a separate pump driver to control an electric motor, and the pump driver is assembled integrally with the electric water pump as a printed circuit board (PCB) in which electrical elements of a microprocessor, a condenser, a resistor, a switch, etc. are integrated.
- PCB printed circuit board
- the PCB is mounted in a pump driver room which is formed at a rear or side portion of the electric water pump.
- the pump driver room is prevented from water flowing therein by having a sealed structure.
- An aspect of the present inventive concept provides a cooling structure of an electric water pump capable of increasing heat release efficiency of a pump driver and a pump driver room by forming a coolant flow passage in a bulkhead mounted between a motor room and the pump driver room of the electric water pump and by running coolant through the coolant flow passage.
- an electric water pump includes an electric motor having a stator which generates an electromagnetic field by control signals supplied from a pump driver.
- a rotor rotates by the electromagnetic field generated by the stator.
- An impeller is connected to and rotates with the rotor to circulate a coolant
- An inside space of the electric water pump may include a motor room in which the electric motor is positioned, a volute room in which the impeller is positioned, and a pump driver room in which the pump driver is positioned.
- the electric water pump may further include an insulation pad for insulating the pump driver from the bulkhead.
- the electric water pump may further include a first cooling passage formed in one side of a water pump housing or a motor room cover for sealing the motor room from outside.
- a second cooling passage has one end connected to the first cooling passage and penetrates the bulkhead.
- a third cooling passage is connected to another end of the second cooling passage and formed in another side of the water pump housing or the motor room cover. A portion of coolant passing through the volute room flows through the first cooling passage, the second cooling passage, and the third cooling passage.
- the first cooling passage and the third cooling passage may be formed in a length direction of the electric water pump, and the second cooling passage may pass through a middle of the bulkhead.
- At least one coolant flow passage may be integrally formed by the first cooling passage, the second cooling passage, and the third cooling passage.
- FIG. 1 is a schematic diagram showing a longitudinal section of an electric water pump according to an exemplary embodiment of the present inventive concept without a separate coolant flow passage.
- FIG. 2 is a schematic diagram showing a longitudinal section of an electric water pump according to another exemplary embodiment of the present inventive concept with a separate coolant flow passage formed therein.
- FIG. 1 is a schematic diagram showing a longitudinal section of an electric water pump according to an exemplary embodiment of the present inventive concept without a separate coolant flow passage.
- an electric water pump 1 may comprise an electric motor 5 having a stator 10 generating an electromagnetic field by control signals supplied from a pump driver 40 .
- a rotor 20 rotates by the electromagnetic field generated by the stator 10 .
- An impeller 30 is connected to and rotates with the rotor 20 to circulate a coolant.
- the pump driver 40 is a circuit board in which electrical elements 41 of a microprocessor, a condenser, a resistor, and a switch, etc. are integrated, and may be a printed circuit board (PCB).
- PCB printed circuit board
- An inside space of the electric water pump 1 may include a motor room 50 in which the electric motor 5 is disposed, a volute room 60 in which the impeller 30 is disposed, and a pump driver room 70 in which the pump driver 40 is disposed.
- An exterior surface of the electric water pump 1 is formed by a water pump housing 3 and a volute room cover 63 .
- the water pump housing 3 and the volute room cover 63 respectively close and seal the motor room 50 and the volute room 60 from outside of the electric water pump 1 .
- the motor room 50 may be closed and sealed by a separate cover with respect to the external space.
- FIG. 1 a separate motor room cover 2 is used together with a water pump housing 3 .
- the electric water pump 1 may further include a separation wall 90 separately forming a rotor room 80 in the motor room 50 such that the rotor 20 is isolated from the motor room 50 .
- a bulkhead 100 separates the motor room 50 and the pump driver room 70 such that the motor room 50 and the pump driver room 70 are closed and sealed with respect to each other by the bulkhead 100 .
- a cap 110 is mounted at a front surface of the bulkhead 100 such that the cap 110 supports one end of the separation wall 90 .
- a front surface portion of the rotor room 80 may fluidly communicate with the volute room 60 such that the coolant flows into the rotor room 80 .
- the volute room 60 is a space in which a coolant flows through an inlet 61 and an outlet 62 .
- the inlet 61 is in general connected to a radiator (not shown).
- a cooled coolant flows into the volute room 60 from the radiator through the inlet 61 when the impeller 30 starts rotating by operation of the electric motor 5 , in which the impeller 30 is connected to the rotor 20 .
- the outlet 62 is in general connected to a water jacket (not shown) of the engine, and the impeller 30 supplies the coolant flowing into the volute room 60 to the water jacket through the outlet 62 after pressurizing the coolant (arrows in the volute room 60 of FIG. 1 show a flowing direction of the coolant).
- a portion of the coolant flowing in the volute room 60 may flow into the rotor room 80 fluidly communicating with the volute room 60 (arrows in the rotor room 80 show for flow of coolant).
- heat generated from the pump driver 40 passes via the pump driver 40 , the bulkhead 100 , the cap 110 , and the separation wall 90 sequentially and is transferred to the coolant flowing into the rotor room 80 .
- the electric water pump 1 may further include an insulation pad 120 for insulating the pump driver 40 from the bulkhead 100 .
- the heat generated from the pump driver 40 passes the pump driver 40 , the insulation pad 120 , the bulkhead 100 , the cap 110 , and the separation wall 90 sequentially and is transferred to the coolant flowing into the rotor room 80 (heat transfer paths are expressed as arrows in FIG. 1 ).
- FIG. 2 is a schematic diagram showing a longitudinal section of an electric water pump according to another exemplary embodiment of the present inventive concept with a separate coolant flow passage formed therein.
- an electric water pump 1 may further include a first cooling passage 201 formed in one side of the water pump housing 3 or the motor room cover 2 f or sealing the motor room 50 from outside of the electric water pump 1 .
- a second cooling passage 202 has one end connected to the first cooling passage 201 and penetrates the bulkhead 100 .
- a third cooling passage 203 is connected to another end of the second cooling passage 202 and formed in another side of the water pump housing 3 or the motor room cover 2 .
- the first cooling passage 201 and the third cooling passage 203 in the water pump housing 3 are formed by drilling.
- the bulkhead 100 may be integrally formed in the water pump housing 3 , and the second cooling passage 202 may be completely sealed from outside.
- the first cooling passage 201 , the second cooling passage 202 , and the third cooling passage 203 are connected with one another and integrally form the separate coolant flow passage.
- the bulkhead 100 may be separately formed from the water pump housing 3 .
- a portion of coolant passing through the volute room 60 may flow through the first cooling passage 201 , the second cooling passage 202 , and the third cooling passage 203 .
- the coolant flows into one end of the first cooling passage 201 which is a high pressure portion of the volute room 60 , passes through the second cooling passage 202 connected to another end of the first cooling passage 201 , and thereby receives heat generated from the pump driver 40 .
- the coolant may pass through the third cooling passage 203 , and flows back into a low pressure portion of the volute room 60 .
- the coolant may flow in an opposite direction depending on structural changes of the electric water pump 1 , such as a change in a rotating direction of the impeller 30 , etc.
- Heat release effect is increased because the heat generated in the pump driver 40 passes only the bulkhead 100 or only the insulation pad 120 , and is transferred to the coolant flowing through the second cooling passage 202 .
- the first cooling passage 201 and the third cooling passage 203 may be formed in a length direction of the electric water pump 1 for convenience of machining such as drilling for forming the coolant passages.
- flow direction of the coolant for the first cooling passage 201 and the third cooling passage 203 may vary according to a machining process, as long as coolant flows into one end of the coolant flow passage, the coolant can flow out from another end thereof.
- the second cooling passage 202 may pass through a middle of the bulkhead 100 since heat is generated intensively at a center portion of the pump driver 40 .
- the coolant flow passage integrally formed by the first cooling passage 201 , the second cooling passage 202 , and the third cooling passage 203 may be more than one. As long as the electric water pump 1 maintains structural-rigidity, the heat release effect of the pump driver 40 and the pump driver room 70 can be improved through the second cooling passage 202 enabled to pass through different portions of the bulkhead 100 .
- cooling of a pump driver and a pump driver room of an electric water pump can be effectively achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An electric water pump includes an electric motor having a stator which generates an electromagnetic field by control signals supplied from a pump driver. A rotor rotates by the electromagnetic field generated by the stator. An impeller is connected to and rotates with the rotor to circulate a coolant. An inside space of the electric water pump may include a motor room in which the electric motor is disposed, a volute room in which the impeller is positioned, and a pump driver room in which the pump driver is positioned.
Description
- The present application claims the benefit of priority to Korean Patent Application Number 10-2014-0107126 filed on Aug. 18, 2014, the entire contents of which application are incorporated herein for all purposes by this reference.
- The present disclosure relates to an electric water pump, and more particularly, to an electric water pump having a separate coolant flow passage.
- A water pump of a vehicle circulates a coolant through an engine, a heater, etc. for cooling the engine and heating an inside of the vehicle. The coolant in the water pump recirculates after discharged from the water pump and exchanging heat with the engine, the heater, a radiator, or the like.
- The water pump is classified largely into a mechanical water pump and an electric water pump.
- The mechanical water pump operates according to rotation of a crankshaft, i.e., an engine revolutions per minute (RPM) by being connected with a pulley fixed to the crankshaft of the engine. Therefore, a flow rate of the coolant discharged from the mechanical water pump is determined according to the engine RPM.
- Here, the flow rate of the coolant necessary for the heater, the radiator, etc. is determined without relation to the engine RPM. In a low engine speed region, since the heater and the radiator cannot operate normally, the engine speed needs to be increased for a normal operation of the heater and the radiator, thus increasing fuel consumption.
- The electric water pump operates by a motor controlled through a controller. Therefore, the electric water pump can determine the flow rate of the coolant, regardless of the engine RPM.
- However, waterproof function is required for components used in the electric water pump to improve performance and durability of the electric water pump.
- The demand for the electric water pump has been increasing. Accordingly, technologies for improving performance and durability of the electric water pump have been developing.
- The electric water pump requires a separate pump driver to control an electric motor, and the pump driver is assembled integrally with the electric water pump as a printed circuit board (PCB) in which electrical elements of a microprocessor, a condenser, a resistor, a switch, etc. are integrated.
- The PCB is mounted in a pump driver room which is formed at a rear or side portion of the electric water pump. The pump driver room is prevented from water flowing therein by having a sealed structure.
- In general, when there is a high load during driving due to a high load of an electric motor, temperature of the PCB also increases. In addition, since high temperature of about 150 degrees centigrade is maintained in a periphery of the engine on which the electric water pump is mounted, temperature of the pump driver room and the PCB of the electric water pump is high.
- The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention, and therefore, it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
- An aspect of the present inventive concept provides a cooling structure of an electric water pump capable of increasing heat release efficiency of a pump driver and a pump driver room by forming a coolant flow passage in a bulkhead mounted between a motor room and the pump driver room of the electric water pump and by running coolant through the coolant flow passage.
- According to an exemplary embodiment of the present inventive concept, an electric water pump includes an electric motor having a stator which generates an electromagnetic field by control signals supplied from a pump driver. A rotor rotates by the electromagnetic field generated by the stator. An impeller is connected to and rotates with the rotor to circulate a coolant An inside space of the electric water pump may include a motor room in which the electric motor is positioned, a volute room in which the impeller is positioned, and a pump driver room in which the pump driver is positioned. The electric water pump may further include an insulation pad for insulating the pump driver from the bulkhead.
- The electric water pump may further include a first cooling passage formed in one side of a water pump housing or a motor room cover for sealing the motor room from outside. A second cooling passage has one end connected to the first cooling passage and penetrates the bulkhead. A third cooling passage is connected to another end of the second cooling passage and formed in another side of the water pump housing or the motor room cover. A portion of coolant passing through the volute room flows through the first cooling passage, the second cooling passage, and the third cooling passage.
- The first cooling passage and the third cooling passage may be formed in a length direction of the electric water pump, and the second cooling passage may pass through a middle of the bulkhead.
- At least one coolant flow passage may be integrally formed by the first cooling passage, the second cooling passage, and the third cooling passage.
-
FIG. 1 is a schematic diagram showing a longitudinal section of an electric water pump according to an exemplary embodiment of the present inventive concept without a separate coolant flow passage. -
FIG. 2 is a schematic diagram showing a longitudinal section of an electric water pump according to another exemplary embodiment of the present inventive concept with a separate coolant flow passage formed therein. - Reference will now be made in detail to various embodiments of the present inventive concept, examples of which are illustrated in the accompanying drawings and described below. While the disclosure will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the inventive concept is/are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
- In addition, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements, and the name of a component does not limit the function of the component concerned.
-
FIG. 1 is a schematic diagram showing a longitudinal section of an electric water pump according to an exemplary embodiment of the present inventive concept without a separate coolant flow passage. - Referring to
FIG. 1 , anelectric water pump 1 according to the present disclosure may comprise anelectric motor 5 having astator 10 generating an electromagnetic field by control signals supplied from apump driver 40. Arotor 20 rotates by the electromagnetic field generated by thestator 10. Animpeller 30 is connected to and rotates with therotor 20 to circulate a coolant. - The
pump driver 40 is a circuit board in whichelectrical elements 41 of a microprocessor, a condenser, a resistor, and a switch, etc. are integrated, and may be a printed circuit board (PCB). - An inside space of the
electric water pump 1 may include amotor room 50 in which theelectric motor 5 is disposed, avolute room 60 in which theimpeller 30 is disposed, and apump driver room 70 in which thepump driver 40 is disposed. - An exterior surface of the
electric water pump 1 is formed by awater pump housing 3 and avolute room cover 63. Thewater pump housing 3 and thevolute room cover 63 respectively close and seal themotor room 50 and thevolute room 60 from outside of theelectric water pump 1. - However, it is not limited thereto that the
motor room 50 may be closed and sealed by a separate cover with respect to the external space. - In
FIG. 1 , a separatemotor room cover 2 is used together with awater pump housing 3. - Referring to
FIG. 1 , theelectric water pump 1 according to an exemplary embodiment of the present inventive concept may further include aseparation wall 90 separately forming arotor room 80 in themotor room 50 such that therotor 20 is isolated from themotor room 50. Abulkhead 100 separates themotor room 50 and thepump driver room 70 such that themotor room 50 and thepump driver room 70 are closed and sealed with respect to each other by thebulkhead 100. Acap 110 is mounted at a front surface of thebulkhead 100 such that thecap 110 supports one end of theseparation wall 90. - In this case, a front surface portion of the
rotor room 80 may fluidly communicate with thevolute room 60 such that the coolant flows into therotor room 80. - Referring to
FIG. 1 , operation principles of theelectric water pump 1 according to the present disclosure and heat transfer paths of thepump driver room 70 will be explained hereinafter. - The
volute room 60 is a space in which a coolant flows through aninlet 61 and anoutlet 62. - The
inlet 61 is in general connected to a radiator (not shown). A cooled coolant flows into thevolute room 60 from the radiator through theinlet 61 when theimpeller 30 starts rotating by operation of theelectric motor 5, in which theimpeller 30 is connected to therotor 20. - The
outlet 62 is in general connected to a water jacket (not shown) of the engine, and theimpeller 30 supplies the coolant flowing into thevolute room 60 to the water jacket through theoutlet 62 after pressurizing the coolant (arrows in thevolute room 60 ofFIG. 1 show a flowing direction of the coolant). - A portion of the coolant flowing in the
volute room 60 may flow into therotor room 80 fluidly communicating with the volute room 60 (arrows in therotor room 80 show for flow of coolant). - Thus, heat generated from the
pump driver 40 passes via thepump driver 40, thebulkhead 100, thecap 110, and theseparation wall 90 sequentially and is transferred to the coolant flowing into therotor room 80. - The
electric water pump 1 may further include aninsulation pad 120 for insulating thepump driver 40 from thebulkhead 100. - Referring to
FIG. 1 , the heat generated from thepump driver 40 passes thepump driver 40, theinsulation pad 120, thebulkhead 100, thecap 110, and theseparation wall 90 sequentially and is transferred to the coolant flowing into the rotor room 80 (heat transfer paths are expressed as arrows inFIG. 1 ). - According to the exemplary embodiment of the present inventive concept as illustrated in
FIG. 1 , enough heat release cannot be achieved because of structures limiting the heat transfer to coolant and the heat transfer path is relatively long. Thus, a separate coolant flow passage may be necessary for more effective heat release of thepump driver 40 and thepump driver room 70. -
FIG. 2 is a schematic diagram showing a longitudinal section of an electric water pump according to another exemplary embodiment of the present inventive concept with a separate coolant flow passage formed therein. - Same reference numerals indicate same elements used throughout the disclosure.
- Referring to
FIG. 2 , anelectric water pump 1 according to another exemplary embodiment of the present inventive concept may further include afirst cooling passage 201 formed in one side of thewater pump housing 3 or the motor room cover 2 f or sealing themotor room 50 from outside of theelectric water pump 1. Asecond cooling passage 202 has one end connected to thefirst cooling passage 201 and penetrates thebulkhead 100. Athird cooling passage 203 is connected to another end of thesecond cooling passage 202 and formed in another side of thewater pump housing 3 or themotor room cover 2. - According to another exemplary embodiment of the present inventive concept, the
first cooling passage 201 and thethird cooling passage 203 in thewater pump housing 3 are formed by drilling. In this case, thebulkhead 100 may be integrally formed in thewater pump housing 3, and thesecond cooling passage 202 may be completely sealed from outside. - Therefore, the
first cooling passage 201, thesecond cooling passage 202, and thethird cooling passage 203 are connected with one another and integrally form the separate coolant flow passage. In addition, thebulkhead 100 may be separately formed from thewater pump housing 3. - A portion of coolant passing through the
volute room 60 may flow through thefirst cooling passage 201, thesecond cooling passage 202, and thethird cooling passage 203. - The coolant flows into one end of the
first cooling passage 201 which is a high pressure portion of thevolute room 60, passes through thesecond cooling passage 202 connected to another end of thefirst cooling passage 201, and thereby receives heat generated from thepump driver 40. - Subsequently, the coolant may pass through the
third cooling passage 203, and flows back into a low pressure portion of thevolute room 60. - However, in another exemplary embodiment of the present inventive concept, the coolant may flow in an opposite direction depending on structural changes of the
electric water pump 1, such as a change in a rotating direction of theimpeller 30, etc. - Heat release effect is increased because the heat generated in the
pump driver 40 passes only thebulkhead 100 or only theinsulation pad 120, and is transferred to the coolant flowing through thesecond cooling passage 202. - The
first cooling passage 201 and thethird cooling passage 203 may be formed in a length direction of theelectric water pump 1 for convenience of machining such as drilling for forming the coolant passages. - Although flow direction of the coolant for the
first cooling passage 201 and thethird cooling passage 203 may vary according to a machining process, as long as coolant flows into one end of the coolant flow passage, the coolant can flow out from another end thereof. - The
second cooling passage 202 may pass through a middle of thebulkhead 100 since heat is generated intensively at a center portion of thepump driver 40. - The coolant flow passage integrally formed by the
first cooling passage 201, thesecond cooling passage 202, and thethird cooling passage 203 may be more than one. As long as theelectric water pump 1 maintains structural-rigidity, the heat release effect of thepump driver 40 and thepump driver room 70 can be improved through thesecond cooling passage 202 enabled to pass through different portions of thebulkhead 100. - As explained in detail, according to the present disclosure, cooling of a pump driver and a pump driver room of an electric water pump can be effectively achieved.
- While this disclosure has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the inventive concept is not limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (8)
1. An electric water pump comprising:
an electric motor having a stator which generates an electromagnetic field by control signals supplied from a pump driver, and a rotor which rotates by the electromagnetic field generated by the stator; and
an impeller connected to and rotating with the rotor to circulate a coolant,
wherein an inside space of the electric water pump includes:
a motor room in which the electric motor is disposed;
a volute room in which the impeller is disposed; and
a pump driver room in which the pump driver is disposed.
2. The electric water pump of claim 1 , further comprising:
a bulkhead separating the motor room and the pump driver room to seal the motor room and the pump driver room with respect to each other;
a separation wall separately forming a rotor room inside the motor room to isolate the rotor from the motor room; and
a cap mounted to a front surface of the bulkhead to support one end of the separation wall,
wherein a front side of the rotor room fluidly communicates with the volute room to flow the coolant into the rotor room.
3. The electric water pump of claim 2 , further comprising:
an insulation pad for insulating the pump driver from the bulkhead.
4. The electric water pump of claim 2 , further comprising:
a first cooling passage formed in one side of a water pump housing or a motor room cover for sealing the motor room from outside;
a second cooling passage of which one end is connected to the first cooling passage, the second cooling passage penetrating the bulkhead; and
a third cooling passage connected to another end of the second cooling passage and formed in another side of the water pump housing or the motor room cover,
wherein a portion of the coolant passing through the volute room flows through the first cooling passage, the second cooling passage, and the third cooling passage.
5. The electric water pump of claim 4 , wherein
the first cooling passage and the third cooling passage are formed in a length direction of the electric water pump.
6. The electric water pump of claim 4 , wherein
the second cooling passage passes through a middle of the bulkhead.
7. The electric water pump of claim 4 , wherein
at least one coolant flow passage is integrally formed by the first cooling passage, the second cooling passage, and the third cooling passage.
8. The electric water pump of claim 1 , wherein the volute room has an inlet and outlet through which the coolant flows by rotation of the impeller and flows out.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140107126A KR101601099B1 (en) | 2014-08-18 | 2014-08-18 | Electric Water Pump with Coolant Passage |
KR10-2014-0107126 | 2014-08-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160047394A1 true US20160047394A1 (en) | 2016-02-18 |
Family
ID=55301846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/558,605 Abandoned US20160047394A1 (en) | 2014-08-18 | 2014-12-02 | Electric water pump with coolant passage |
Country Status (2)
Country | Link |
---|---|
US (1) | US20160047394A1 (en) |
KR (1) | KR101601099B1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017150384A (en) * | 2016-02-24 | 2017-08-31 | 株式会社川本製作所 | Submersible pump |
US10448978B2 (en) | 2017-07-27 | 2019-10-22 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
CN110397602A (en) * | 2019-06-27 | 2019-11-01 | 中国船舶重工集团公司第七一九研究所 | A kind of integrated pipeline pump |
US10463404B2 (en) | 2017-07-27 | 2019-11-05 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
US10543142B2 (en) | 2017-08-10 | 2020-01-28 | Warsaw Orthopedic, Inc. | Surgical frame including torso-sling and method for use thereof |
CN110805561A (en) * | 2019-10-28 | 2020-02-18 | 河北深海电器有限公司 | Pump and hydrogen energy battery automobile |
US10576006B2 (en) | 2017-06-30 | 2020-03-03 | Warsaw Orthopedic, Inc. | Surgical frame having translating lower beam and method for use thereof |
US10874570B2 (en) | 2017-06-30 | 2020-12-29 | Warsaw Orthopedic, Inc. | Surgical frame and method for use thereof facilitating patient transfer |
US11020304B2 (en) | 2017-08-08 | 2021-06-01 | Warsaw Orthopedic, Inc. | Surgical frame including main beam for facilitating patient access |
US11083501B2 (en) | 2019-04-24 | 2021-08-10 | Warsaw Orthopedic, Inc. | Surgical system and method |
US11236682B2 (en) * | 2018-02-22 | 2022-02-01 | Hamilton Sundstrand Corporation | Fuel pump systems for turbomachines |
US11696863B2 (en) | 2018-08-21 | 2023-07-11 | Warsaw Orthopedic, Inc. | Surgical frame having translating lower beam and moveable linkage or surgical equipment attached thereto and method for use thereof |
US12035950B2 (en) | 2021-06-22 | 2024-07-16 | Warsaw Orthopedic, Inc. | Surgical system and method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102141867B1 (en) * | 2018-12-13 | 2020-08-06 | 주식회사 현대케피코 | Water pump |
KR102191404B1 (en) * | 2020-03-06 | 2020-12-16 | 명화공업주식회사 | Electric Water Pump |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4834624A (en) * | 1986-12-13 | 1989-05-30 | Grundfos International A/S | Pump assembly for delivering liquids and gases |
US20090022610A1 (en) * | 2006-02-23 | 2009-01-22 | Thomas Materne | Motor centrifugal pump |
US20130195696A1 (en) * | 2010-09-29 | 2013-08-01 | Aisin Seiki Kabushiki Kaisha | Electric pump |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101305671B1 (en) * | 2011-11-29 | 2013-09-09 | 현대자동차주식회사 | Electric water pump |
-
2014
- 2014-08-18 KR KR1020140107126A patent/KR101601099B1/en active IP Right Grant
- 2014-12-02 US US14/558,605 patent/US20160047394A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4834624A (en) * | 1986-12-13 | 1989-05-30 | Grundfos International A/S | Pump assembly for delivering liquids and gases |
US20090022610A1 (en) * | 2006-02-23 | 2009-01-22 | Thomas Materne | Motor centrifugal pump |
US20130195696A1 (en) * | 2010-09-29 | 2013-08-01 | Aisin Seiki Kabushiki Kaisha | Electric pump |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017150384A (en) * | 2016-02-24 | 2017-08-31 | 株式会社川本製作所 | Submersible pump |
US10874570B2 (en) | 2017-06-30 | 2020-12-29 | Warsaw Orthopedic, Inc. | Surgical frame and method for use thereof facilitating patient transfer |
US11389362B2 (en) | 2017-06-30 | 2022-07-19 | Warsaw Orthopedic, Inc. | Surgical frame having translating lower beam and method for use thereof |
US10576006B2 (en) | 2017-06-30 | 2020-03-03 | Warsaw Orthopedic, Inc. | Surgical frame having translating lower beam and method for use thereof |
US11052008B2 (en) | 2017-06-30 | 2021-07-06 | Warsaw Orthopedic, Inc. | Surgical frame and method for use thereof facilitating patient transfer |
US10448978B2 (en) | 2017-07-27 | 2019-10-22 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
US11596454B2 (en) | 2017-07-27 | 2023-03-07 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
US10463404B2 (en) | 2017-07-27 | 2019-11-05 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
US11364058B2 (en) | 2017-07-27 | 2022-06-21 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
US11020304B2 (en) | 2017-08-08 | 2021-06-01 | Warsaw Orthopedic, Inc. | Surgical frame including main beam for facilitating patient access |
US11819461B2 (en) | 2017-08-08 | 2023-11-21 | Warsaw Orthopedic, Inc. | Surgical frame including main beam for facilitating patient access |
US10849809B2 (en) | 2017-08-10 | 2020-12-01 | Warsaw Orthopedic, Inc. | Surgical frame including torso-sling and method for use thereof |
US10722413B2 (en) | 2017-08-10 | 2020-07-28 | Warsaw Orthopedic, Inc. | Surgical frame including torso-sling and method for use thereof |
US10543142B2 (en) | 2017-08-10 | 2020-01-28 | Warsaw Orthopedic, Inc. | Surgical frame including torso-sling and method for use thereof |
US11236682B2 (en) * | 2018-02-22 | 2022-02-01 | Hamilton Sundstrand Corporation | Fuel pump systems for turbomachines |
US11696863B2 (en) | 2018-08-21 | 2023-07-11 | Warsaw Orthopedic, Inc. | Surgical frame having translating lower beam and moveable linkage or surgical equipment attached thereto and method for use thereof |
US11083501B2 (en) | 2019-04-24 | 2021-08-10 | Warsaw Orthopedic, Inc. | Surgical system and method |
CN110397602A (en) * | 2019-06-27 | 2019-11-01 | 中国船舶重工集团公司第七一九研究所 | A kind of integrated pipeline pump |
CN110805561A (en) * | 2019-10-28 | 2020-02-18 | 河北深海电器有限公司 | Pump and hydrogen energy battery automobile |
US12035950B2 (en) | 2021-06-22 | 2024-07-16 | Warsaw Orthopedic, Inc. | Surgical system and method |
Also Published As
Publication number | Publication date |
---|---|
KR20160021619A (en) | 2016-02-26 |
KR101601099B1 (en) | 2016-03-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20160047394A1 (en) | Electric water pump with coolant passage | |
US9618011B2 (en) | Electric water pump with coolant passage | |
JP5648241B2 (en) | Electric water pump | |
KR101332853B1 (en) | Electric water pump with cooling unit for vehicles | |
US10197061B2 (en) | Electric pump having circuit board | |
JP4894438B2 (en) | Centrifugal pump | |
SE536824C2 (en) | Cooling arrangement of pump designed for pumping liquid | |
KR101588769B1 (en) | Electric oil pump for automatic transmission | |
JP2011106438A (en) | Electric water pump | |
JP2011106442A (en) | Electronic water pump | |
JP2011106439A (en) | Electric water pump | |
JP2006257912A (en) | Pump device | |
MX2014009363A (en) | Electric motor -driven pump. | |
US20160290364A1 (en) | Electric water pump | |
US20210273520A1 (en) | Motor | |
CN209590756U (en) | Cooling device | |
JP7168689B2 (en) | electric coolant pump | |
KR101189242B1 (en) | Electric water pump for vehicle | |
CN107237759A (en) | Electronic water pump | |
KR20190029806A (en) | Apparatus for cooling motor of hybrid vehicles | |
US20160123217A1 (en) | Control valve system for coolant | |
JP5760774B2 (en) | Cooling device for internal combustion engine | |
CN107438716B (en) | Submersible pump system and submersible pump thereof | |
KR20100079519A (en) | The separated two cooling systems of electric moter for submarine | |
JP2009250098A (en) | Cooling device for vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, BONG SANG;REEL/FRAME:034314/0450 Effective date: 20141125 Owner name: KIA MOTORS CORPORATION, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, BONG SANG;REEL/FRAME:034314/0450 Effective date: 20141125 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |