EP3321510A1 - Water pump - Google Patents
Water pump Download PDFInfo
- Publication number
- EP3321510A1 EP3321510A1 EP17200827.8A EP17200827A EP3321510A1 EP 3321510 A1 EP3321510 A1 EP 3321510A1 EP 17200827 A EP17200827 A EP 17200827A EP 3321510 A1 EP3321510 A1 EP 3321510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- water pump
- main frame
- base
- foreign substances
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- 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
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- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
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- 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
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
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- 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
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- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2211—More than one set of flow passages
-
- 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
- F04D29/2238—Special flow patterns
- F04D29/2255—Special flow patterns flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect
-
- 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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
-
- 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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
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- 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
- F04D29/406—Casings; Connections of working fluid 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
- F04D29/4293—Details of fluid inlet or outlet
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- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/607—Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles
Definitions
- the present invention relates to a water pump, and more particularly, to a water pump in which cooling water is suctioned to be circulated into an engine and which is used in a cooling system for a vehicle.
- a water pump is a pump that forcibly circulates cooling water into an engine and a product that cools electronic equipment inside a vehicle.
- an engine that attains power using an explosive force of a fuel like an engine of an automobile, generates high-temperature heat during operating.
- high-temperature heat is not properly controlled, not only the engine itself but also other adjacent engines have a bad influence.
- the cooling water is necessarily used as a unit for cooling such heat.
- a water pump for an internal combustion engine is forcibly driven by a belt connected to a crankshaft of the engine so as to rotate an impeller inside the pump.
- a cooling water (water) pump is installed to cool an inverter, a hemispherical grain (HSG), a stack or the like.
- Such a cooling water pump is generally configured to be driven in line with the engine or to be autonomously driven by an additionally-supplied power.
- a rotating impeller suctions the cooling water into the center thereof and applies a centrifugal force to the suctioned cooling water so that the cooling water can be circulated into the engine.
- Korean Patent Registration No. 10-1635538 discloses an apparatus for removing foreign substances of a pump that is capable of discharging the foreign substances interposed between an impeller 1 and a casing 2, and more particularly, an apparatus for removing foreign substances of a pump that has a main component of a scraper ring 3 that slides in a direction in which a fluid is suctioned and scrapes foreign substances introduced between the impeller 1 and the casing 2.
- Korean Patent Registration No. 10-1635538 does not disclose any method of preventing the foreign substances introduced into the impeller 1 from being introduced into the water pump. That is, there are many subsidiary equipment such as a bearing, a seal unit, and the like, between a rotation shaft and a water pump frame. The foreign substances cannot be prevented from being introduced into the equipment.
- the present invention provides a water pump having a structure in which introduction of foreign substances into an impeller and a main frame of the water pump is minimized.
- the present invention also provides a water pump having a structure in which foreign substances introduced into the impeller can be easily discharged.
- a water pump including: a driving shat configured to be rotated by an external driving force; an impeller configured to be rotated by being connected to the driving shaft; and a cover frame including a main frame having an accommodation space in which the impeller is accommodated, formed therein, a suction pipe, which communicates with one side of the main frame and through which a fluid is suctioned into the accommodation space, and a barrier wall that extends from the suction pipe and disposed at one side between the main frame and the impeller.
- the impeller may include: a disc-shaped base having a center to which the driving shaft is connected; a plurality of blades coupled to a top surface of the base and extending from the center of the base in a radial form; a disc-shaped shroud coupled to a top end of each of the plurality of blades; and an introduction pipe, which communicates with one side of the shroud and through which the fluid is introduced into the impeller, and the barrier wall may extend toward an inside of the introduction pipe.
- the cover frame may include a pair of protrusion pieces that protrude respectively from the inside of the main frame, are disposed at outer circumferential surfaces of the shroud and the base and form a discharge port through which the fluid introduced into the impeller is discharged.
- An outer end of the base may be inclined so that the base guides the fluid toward a center of the discharge port.
- a water pump according to an embodiment of the present invention is installed inside an automobile and suctions cooling water to circulated into an automobile engine and an inverter
- descriptions will be provided using the terms such as cooling water, a water pump, and the like, it will be preferable that it is interpreted that the terms mean all fluids including the cooling water and all types of pumps including the water pump.
- a water pump 100 includes a driving shaft 110, an impeller 120, and a cover frame 130.
- the driving shaft 110 is rotated by an external driving force supplied.
- the external driving force may be transferred to the driving shaft 110 by using a driving motor separately provided or by being forcibly driven by a belt connected to a crankshaft of an engine.
- the impeller 120 is rotated by being connected to the driving shaft 110.
- the impeller 120 may include a disc-shaped base 121 having the center to which the driving shaft 110 is connected, a plurality of blades 122 coupled to a top surface of the base 121 and extending from the center of the base 121 in a radial form, a disc-shaped shroud 123 coupled to a top end of each of the plurality of blades 122, and an introduction pipe 124 which communicates with one side of the shroud 123 and through which a fluid is introduced into the impeller 120.
- the cover frame 130 includes a main frame 131 having an accommodation space 131 a in which the impeller 120 is accommodated, formed therein, a suction pipe 132, which is formed to communicate with one side of the main frame 131 and through which the fluid is suctioned into the accommodation space 131 a, and a barrier wall 133 that extends from the suction pipe 132 and disposed at one side between the main frame 131 and the impeller 120.
- the barrier wall 133 may extend toward an inside of the introduction pipe 124.
- the introduction pipe 124 and the barrier wall 133 form a double wall so that foreign substances can be prevented from being introduced into a space between the shroud 123 and an upper portion of the main frame 131.
- the cover frame 130 may include a pair of protrusion pieces 134 that protrude respectively from the inside of the main frame 131, are disposed at outer circumferential surfaces of the shroud 123 and the base 121 and form a discharge port 134a through which the fluid introduced into the impeller 120 is discharged.
- the discharge port 134a is an outlet through which cooling water is discharged from the water pump 100 so that the cooling water introduced into the impeller 120 and discharged from the impeller 120 by a rotational force transferred from the blades 122 can be introduced into an engine and an inverter. Transferring of the cooling water into the engine from the discharge port 134a may be designed in various ways, and this is a well-known art and thus detailed descriptions thereof will be omitted.
- the base 121 may guide the fluid toward the center of the discharge port 134a. This is to prevent the foreign substances from being introduced into a bottom end of the base 121.
- an outer end of the base 121 is curved upward so that a velocity vector of the cooling water discharged from the impeller 120 faces the top end of the base 121.
- the foreign substances may not flow into the bottom end of the base 121 but may be discharged to the discharge port 134a.
- the base 121 for guiding the fluid toward the center of the discharge port 134a may have various shapes according to a designer's selection.
- the water pump 100 may further include a shaft frame 140, a seal unit 150, and a bearing 160.
- the top end of the shaft frame 140 is coupled to the cover frame 130, and the shaft frame 140 accommodates the driving shaft 110, the seal unit 150, and the bearing 160 therein.
- the seal unit 150 is a mechanical element for preventing the cooling water from being introduced into the shaft frame 140. Although, in FIG. 2 , the seal unit 150 is directly coupled to the driving shaft 110, this is just an exemplary embodiment of the present invention.
- the seal unit 150 may have a structure in which an inside surface thereof is rotated and an outside surface thereof is fixed to an external object, like the bearing, or a structure in which an additional bearing is coupled to a shaft and then the seal unit 150 is coupled to an outside of the bearing.
- the inside surface of the bearing 160 is coupled to the driving shaft 110, and the outside surface of the bearing 160 is coupled to the shaft frame 140 so that the bearing 160 supports the driving shaft 110.
- the bearing 160 is a mechanical element that fixes a rotating shaft in a predetermined position, supports a weight of the shaft and a load applied to the shaft and rotates the shaft.
- a ball bearing is shown in FIG. 2 .
- this is just an exemplary embodiment, and a variety of types of bearings may be used.
- FIG. 3A illustrates a movement path of cooling water and foreign substances introduced into a water pump according to the related art
- FIG. 3B illustrates a movement path of cooling water and foreign substances introduced into the water pump 100 according to an embodiment of the present invention.
- the water pump according to the related art does not include a barrier wall, and no inclination is formed at an outer end of an impeller base so that the foreign substances permeate between a water pump impeller and a main frame.
- FIG. 3A illustrates a movement path of cooling water and foreign substances introduced into a water pump according to the related art
- FIG. 3B illustrates a movement path of cooling water and foreign substances introduced into the water pump 100 according to an embodiment of the present invention.
- the water pump according to the related art does not include a barrier wall, and no inclination is formed at an outer end of an impeller base so that the foreign substances permeate between a water pump impeller and a main frame.
- FIG. 3A illustrates a movement path of cooling water and foreign substances introduced into a
- the water pump 100 includes the barrier wall 133, and an inclination is formed at an outer end of the impeller base 121 so that the foreign substances do not permeate between the impeller 120 and the main frame 131 but is directly discharged to the discharge port 134a.
- the water pump 100 is prevented from being damaged by the foreign substances and may circulate the cooling water smoothly into the engine, the inverter, or the like.
- a barrier wall is added between a main frame and an impeller so that foreign substances can be prevented from being introduced between the impeller and the main frame.
- an outer end of an impeller base is inclined so that a flow path is configured in such a way that the foreign substances can be smoothly discharged from the water pump.
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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)
Abstract
Disclosed is a water pump including: a driving shat configured to be rotated by an external driving force; an impeller configured to be rotated by being connected to the driving shaft; and a cover frame including a main frame having an accommodation space in which the impeller is accommodated, formed therein, a suction pipe, which communicates with one side of the main frame and through which a fluid is suctioned into the accommodation space, and a barrier wall that extends from the suction pipe and disposed at one side between the main frame and the impeller. In the water pump according to the present invention, the barrier wall is added between the main frame and the impeller so that foreign substances can be prevented from being introduced between the impeller and the main frame. Also, in the water pump according to the present invention, an outer end of an impeller base is inclined so that the foreign substances can be smoothly discharged from the water pump.
Description
- This application claims the benefit of Korean Patent Application No.
10-2016-0150353, filed on November, 11, 2016 - The present invention relates to a water pump, and more particularly, to a water pump in which cooling water is suctioned to be circulated into an engine and which is used in a cooling system for a vehicle.
- A water pump is a pump that forcibly circulates cooling water into an engine and a product that cools electronic equipment inside a vehicle. In general, an engine that attains power using an explosive force of a fuel, like an engine of an automobile, generates high-temperature heat during operating. When high-temperature heat is not properly controlled, not only the engine itself but also other adjacent engines have a bad influence. Thus, the cooling water is necessarily used as a unit for cooling such heat.
- In general, a water pump for an internal combustion engine is forcibly driven by a belt connected to a crankshaft of the engine so as to rotate an impeller inside the pump.
- In case of a green car, such as an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, or a fuel cell vehicle, a cooling water (water) pump is installed to cool an inverter, a hemispherical grain (HSG), a stack or the like.
- Such a cooling water pump is generally configured to be driven in line with the engine or to be autonomously driven by an additionally-supplied power.
- A rotating impeller suctions the cooling water into the center thereof and applies a centrifugal force to the suctioned cooling water so that the cooling water can be circulated into the engine.
- There are many cases where a small amount of foreign substances are included in the cooling water introduced into the water pump. When the foreign substances are introduced into the water pump, driving of the water pump may be stopped. Thus, circulation of the cooling water is not performed so that the engine and the inverter may be severely damaged due to overheat.
- In order to reduce an influence of the water pump by the foreign substances, Korean Patent Registration No.
10-1635538 FIG. 1 , Korean Patent Registration No.10-1635538 impeller 1 and acasing 2, and more particularly, an apparatus for removing foreign substances of a pump that has a main component of ascraper ring 3 that slides in a direction in which a fluid is suctioned and scrapes foreign substances introduced between theimpeller 1 and thecasing 2. - In this case, according to Korean Patent Registration No.
10-1635538 impeller 1 and a frame of a top end of the water pump. That is, the introduced foreign substances can be easily removed. However, introduction of the foreign substances itself cannot be fundamentally prevented. - Also, Korean Patent Registration No.
10-1635538 impeller 1 from being introduced into the water pump. That is, there are many subsidiary equipment such as a bearing, a seal unit, and the like, between a rotation shaft and a water pump frame. The foreign substances cannot be prevented from being introduced into the equipment. - Thus, a water pump having an additional structure for minimizing introduction of the foreign substances included in cooling water into the water pump is required.
- The present invention provides a water pump having a structure in which introduction of foreign substances into an impeller and a main frame of the water pump is minimized. The present invention also provides a water pump having a structure in which foreign substances introduced into the impeller can be easily discharged.
- According to an aspect of the present invention, there is provided a water pump including: a driving shat configured to be rotated by an external driving force; an impeller configured to be rotated by being connected to the driving shaft; and a cover frame including a main frame having an accommodation space in which the impeller is accommodated, formed therein, a suction pipe, which communicates with one side of the main frame and through which a fluid is suctioned into the accommodation space, and a barrier wall that extends from the suction pipe and disposed at one side between the main frame and the impeller.
- The impeller may include: a disc-shaped base having a center to which the driving shaft is connected; a plurality of blades coupled to a top surface of the base and extending from the center of the base in a radial form; a disc-shaped shroud coupled to a top end of each of the plurality of blades; and an introduction pipe, which communicates with one side of the shroud and through which the fluid is introduced into the impeller, and the barrier wall may extend toward an inside of the introduction pipe.
- The cover frame may include a pair of protrusion pieces that protrude respectively from the inside of the main frame, are disposed at outer circumferential surfaces of the shroud and the base and form a discharge port through which the fluid introduced into the impeller is discharged.
- An outer end of the base may be inclined so that the base guides the fluid toward a center of the discharge port.
- The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
-
FIG. 1 is a cross-sectional view of a water pump according to the related art; -
FIG. 2 is a cross-sectional view of a water pump according to an embodiment of the present invention; and -
FIG. 3A is a cross-sectional view of movement of cooling water and foreign substances introduced into the water pump according to the related art, andFIG. 3B is a cross-sectional view of movement of cooling water and foreign substances introduced into the water pump according to an embodiment of the present invention. - Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. However, exemplary embodiments are not limited to the embodiments illustrated hereinafter and are just exemplary embodiments of the invention, and there may be various modifications that may replace the embodiments of the present specification and the drawings. Accordingly, all such modifications are intended to be included within the scope of the claims.
- Although a water pump according to an embodiment of the present invention is installed inside an automobile and suctions cooling water to circulated into an automobile engine and an inverter, this is just an exemplary embodiment, and the structure of the water pump according to the present invention may be applied to all pumps having a structure in which a fluid is suctioned and discharged using a rotational force of an impeller. Thus, even though hereinafter, descriptions will be provided using the terms such as cooling water, a water pump, and the like, it will be preferable that it is interpreted that the terms mean all fluids including the cooling water and all types of pumps including the water pump.
- Referring to
FIG. 2 , awater pump 100 according to an embodiment of the present invention includes adriving shaft 110, animpeller 120, and acover frame 130. - The
driving shaft 110 is rotated by an external driving force supplied. Although not shown, the external driving force may be transferred to the drivingshaft 110 by using a driving motor separately provided or by being forcibly driven by a belt connected to a crankshaft of an engine. - The
impeller 120 is rotated by being connected to thedriving shaft 110. In more detail, theimpeller 120 may include a disc-shaped base 121 having the center to which thedriving shaft 110 is connected, a plurality ofblades 122 coupled to a top surface of thebase 121 and extending from the center of thebase 121 in a radial form, a disc-shaped shroud 123 coupled to a top end of each of the plurality ofblades 122, and anintroduction pipe 124 which communicates with one side of theshroud 123 and through which a fluid is introduced into theimpeller 120. - The
cover frame 130 includes amain frame 131 having anaccommodation space 131 a in which theimpeller 120 is accommodated, formed therein, asuction pipe 132, which is formed to communicate with one side of themain frame 131 and through which the fluid is suctioned into theaccommodation space 131 a, and abarrier wall 133 that extends from thesuction pipe 132 and disposed at one side between themain frame 131 and theimpeller 120. - In this case, the
barrier wall 133 may extend toward an inside of theintroduction pipe 124. Theintroduction pipe 124 and thebarrier wall 133 form a double wall so that foreign substances can be prevented from being introduced into a space between theshroud 123 and an upper portion of themain frame 131. - The
cover frame 130 may include a pair ofprotrusion pieces 134 that protrude respectively from the inside of themain frame 131, are disposed at outer circumferential surfaces of theshroud 123 and thebase 121 and form adischarge port 134a through which the fluid introduced into theimpeller 120 is discharged. - The
discharge port 134a is an outlet through which cooling water is discharged from thewater pump 100 so that the cooling water introduced into theimpeller 120 and discharged from theimpeller 120 by a rotational force transferred from theblades 122 can be introduced into an engine and an inverter. Transferring of the cooling water into the engine from thedischarge port 134a may be designed in various ways, and this is a well-known art and thus detailed descriptions thereof will be omitted. - Because an outer end of the
base 121 is inclined, thebase 121 may guide the fluid toward the center of thedischarge port 134a. This is to prevent the foreign substances from being introduced into a bottom end of thebase 121. - Preferably, an outer end of the
base 121 is curved upward so that a velocity vector of the cooling water discharged from theimpeller 120 faces the top end of thebase 121. Thus, the foreign substances may not flow into the bottom end of thebase 121 but may be discharged to thedischarge port 134a. However, this is just an exemplary embodiment of the present invention, and thebase 121 for guiding the fluid toward the center of thedischarge port 134a may have various shapes according to a designer's selection. - The
water pump 100 according to an embodiment of the present invention may further include ashaft frame 140, aseal unit 150, and abearing 160. - The top end of the
shaft frame 140 is coupled to thecover frame 130, and theshaft frame 140 accommodates thedriving shaft 110, theseal unit 150, and the bearing 160 therein. - The
seal unit 150 is a mechanical element for preventing the cooling water from being introduced into theshaft frame 140. Although, inFIG. 2 , theseal unit 150 is directly coupled to the drivingshaft 110, this is just an exemplary embodiment of the present invention. Theseal unit 150 may have a structure in which an inside surface thereof is rotated and an outside surface thereof is fixed to an external object, like the bearing, or a structure in which an additional bearing is coupled to a shaft and then theseal unit 150 is coupled to an outside of the bearing. - The inside surface of the
bearing 160 is coupled to the drivingshaft 110, and the outside surface of thebearing 160 is coupled to theshaft frame 140 so that thebearing 160 supports the drivingshaft 110. Thebearing 160 is a mechanical element that fixes a rotating shaft in a predetermined position, supports a weight of the shaft and a load applied to the shaft and rotates the shaft. InFIG. 2 , a ball bearing is shown. However, this is just an exemplary embodiment, and a variety of types of bearings may be used. - Features of the invention can be clearly understood by referring to
FIGS. 3A and 3B in a comparative manner.FIG. 3A illustrates a movement path of cooling water and foreign substances introduced into a water pump according to the related art, andFIG. 3B illustrates a movement path of cooling water and foreign substances introduced into thewater pump 100 according to an embodiment of the present invention. Referring toFIG. 3A , the water pump according to the related art does not include a barrier wall, and no inclination is formed at an outer end of an impeller base so that the foreign substances permeate between a water pump impeller and a main frame. However, referring toFIG. 3B , thewater pump 100 according to an embodiment of the present invention includes thebarrier wall 133, and an inclination is formed at an outer end of theimpeller base 121 so that the foreign substances do not permeate between theimpeller 120 and themain frame 131 but is directly discharged to thedischarge port 134a. Thus, thewater pump 100 is prevented from being damaged by the foreign substances and may circulate the cooling water smoothly into the engine, the inverter, or the like. - As described above, in a water pump according to the present invention, a barrier wall is added between a main frame and an impeller so that foreign substances can be prevented from being introduced between the impeller and the main frame. Also, in the water pump according to the present invention, an outer end of an impeller base is inclined so that a flow path is configured in such a way that the foreign substances can be smoothly discharged from the water pump.
- While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (4)
- A water pump comprising:a driving shat configured to be rotated by an external driving force;an impeller configured to be rotated by being connected to the driving shaft; anda cover frame comprising a main frame having an accommodation space in which the impeller is accommodated, formed therein, a suction pipe, which communicates with one side of the main frame and through which a fluid is suctioned into the accommodation space, and a barrier wall that extends from the suction pipe and disposed at one side between the main frame and the impeller.
- The water pump of claim 1, wherein the impeller comprises:a disc-shaped base having a center to which the driving shaft is connected;a plurality of blades coupled to a top surface of the base and extending from the center of the base in a radial form;a disc-shaped shroud coupled to a top end of each of the plurality of blades; andan introduction pipe, which communicates with one side of the shroud and through which the fluid is introduced into the impeller, andthe barrier wall extends toward an inside of the introduction pipe.
- The water pump of claim 2, wherein the cover frame comprises a pair of protrusion pieces that protrude respectively from the inside of the main frame, are disposed at outer circumferential surfaces of the shroud and the base and form a discharge port through which the fluid introduced into the impeller is discharged.
- The water pump of claim 3, wherein an outer end of the base is inclined so that the base guides the fluid toward a center of the discharge port.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020160150353A KR101893847B1 (en) | 2016-11-11 | 2016-11-11 | Waterpump |
Publications (1)
Publication Number | Publication Date |
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EP3321510A1 true EP3321510A1 (en) | 2018-05-16 |
Family
ID=60293880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17200827.8A Withdrawn EP3321510A1 (en) | 2016-11-11 | 2017-11-09 | Water pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US20180135500A1 (en) |
EP (1) | EP3321510A1 (en) |
JP (1) | JP2018076866A (en) |
KR (1) | KR101893847B1 (en) |
CN (1) | CN108071609A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102125868B1 (en) | 2018-10-15 | 2020-06-23 | 주식회사 코아비스 | Impeller for electric water pump |
KR20200073033A (en) | 2018-12-13 | 2020-06-23 | 주식회사 현대케피코 | Water pump preventing from inflow of heterogeneous materials |
KR102159625B1 (en) * | 2020-01-20 | 2020-09-25 | (주)신한펌프테크 | Twin cap pump |
AU2022296129A1 (en) * | 2021-06-25 | 2023-10-26 | Weir Minerals Australia Ltd | Centrifugal slurry pump impeller shroud with lip |
Citations (6)
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FR386812A (en) * | 1907-02-26 | 1908-06-24 | App Rateau Soc D Expl Des | Automatic balancing system for rotating machines |
GB1439666A (en) * | 1973-09-05 | 1976-06-16 | Neratoom | Centrifugal pump for processing liquids containing abrasive constituents more particularly a sand pump or a waste-water pump |
US20050196274A1 (en) * | 2004-03-05 | 2005-09-08 | Hans-Juergen Kraffzik | Centrifugal pump |
JP2014118900A (en) * | 2012-12-18 | 2014-06-30 | Nidec Sankyo Corp | Pump device |
DE102013211556A1 (en) * | 2013-06-19 | 2014-12-24 | E.G.O. Elektro-Gerätebau GmbH | Heating device for a pump and pump |
KR101635538B1 (en) | 2016-04-18 | 2016-07-01 | 서의석 | a sludge removal apparatus of pump |
Family Cites Families (12)
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US3402671A (en) * | 1967-05-17 | 1968-09-24 | Wilfley & Sons Inc A | Centrifugal pump and sealing means therefor |
US3881840A (en) * | 1973-09-05 | 1975-05-06 | Neratoom | Centrifugal pump for processing liquids containing abrasive constituents, more particularly, a sand pump or a waste-water pumper |
JPS5885398A (en) * | 1981-11-16 | 1983-05-21 | Hitachi Ltd | Spiral pump |
KR100901204B1 (en) * | 2007-11-06 | 2009-06-08 | 주식회사 애드블루 | Centrifugal impeller |
JP2010144609A (en) * | 2008-12-18 | 2010-07-01 | Mitsubishi Electric Corp | Fuel pump |
JP2012202319A (en) * | 2011-03-25 | 2012-10-22 | Panasonic Corp | Centrifugal pump |
DE102011079510B4 (en) * | 2011-07-20 | 2016-11-24 | E.G.O. Elektro-Gerätebau GmbH | pump |
JP2013234584A (en) * | 2012-05-08 | 2013-11-21 | Panasonic Corp | Electric blower and vacuum cleaner using the same |
CN202867234U (en) * | 2012-10-19 | 2013-04-10 | 福建省尤溪长波水力机械有限公司 | Double-stage centrifuging water-turbine pump |
CA2905848C (en) * | 2014-09-26 | 2017-09-12 | Summit Esp, Llc | Centrifugal pump for handling abrasive-laden fluid |
CN106907348B (en) * | 2015-12-23 | 2021-04-09 | 德昌电机(深圳)有限公司 | Impeller and pump using same |
US10161411B1 (en) * | 2017-10-20 | 2018-12-25 | Halliburton Energy Services, Inc. | Centrifugal pump sealing surfaces |
-
2016
- 2016-11-11 KR KR1020160150353A patent/KR101893847B1/en active IP Right Grant
-
2017
- 2017-11-09 EP EP17200827.8A patent/EP3321510A1/en not_active Withdrawn
- 2017-11-10 CN CN201711103311.0A patent/CN108071609A/en active Pending
- 2017-11-10 US US15/808,900 patent/US20180135500A1/en not_active Abandoned
- 2017-11-10 JP JP2017217176A patent/JP2018076866A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR386812A (en) * | 1907-02-26 | 1908-06-24 | App Rateau Soc D Expl Des | Automatic balancing system for rotating machines |
GB1439666A (en) * | 1973-09-05 | 1976-06-16 | Neratoom | Centrifugal pump for processing liquids containing abrasive constituents more particularly a sand pump or a waste-water pump |
US20050196274A1 (en) * | 2004-03-05 | 2005-09-08 | Hans-Juergen Kraffzik | Centrifugal pump |
JP2014118900A (en) * | 2012-12-18 | 2014-06-30 | Nidec Sankyo Corp | Pump device |
DE102013211556A1 (en) * | 2013-06-19 | 2014-12-24 | E.G.O. Elektro-Gerätebau GmbH | Heating device for a pump and pump |
KR101635538B1 (en) | 2016-04-18 | 2016-07-01 | 서의석 | a sludge removal apparatus of pump |
Also Published As
Publication number | Publication date |
---|---|
JP2018076866A (en) | 2018-05-17 |
KR101893847B1 (en) | 2018-08-31 |
KR20180053469A (en) | 2018-05-23 |
CN108071609A (en) | 2018-05-25 |
US20180135500A1 (en) | 2018-05-17 |
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