WO2017175189A1 - Pompe à eau dotée d'un séparateur et d'un joint pour protéger le rotor - Google Patents

Pompe à eau dotée d'un séparateur et d'un joint pour protéger le rotor Download PDF

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Publication number
WO2017175189A1
WO2017175189A1 PCT/IB2017/052014 IB2017052014W WO2017175189A1 WO 2017175189 A1 WO2017175189 A1 WO 2017175189A1 IB 2017052014 W IB2017052014 W IB 2017052014W WO 2017175189 A1 WO2017175189 A1 WO 2017175189A1
Authority
WO
WIPO (PCT)
Prior art keywords
separator
rotor
water pump
rotary shaft
seal
Prior art date
Application number
PCT/IB2017/052014
Other languages
English (en)
Inventor
Kabir BHANDARI
Torsten Gerlich
Amardip KUMAR
Kumar Abhishek
Navdeep DAHIYA
Original Assignee
Padmini Vna Mechatronics Pvt. 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 Padmini Vna Mechatronics Pvt. Ltd. filed Critical Padmini Vna Mechatronics Pvt. Ltd.
Priority to EP17778775.1A priority Critical patent/EP3440362A4/fr
Publication of WO2017175189A1 publication Critical patent/WO2017175189A1/fr

Links

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
    • 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
    • F04D13/0613—Special connection between the rotor compartments
    • 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
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps

Definitions

  • the present invention provides customized water pump with separator and seal to protect the rotor against foreign particles from cooling circuit. More specifically, the invention provides customized water pump with at least one separator placed between cooling circuit and rotor which blocks all the foreign particles specially iron particles to enter into rotor area; and at least one rotary shaft seal used between rotating and stationary components or between two components in relative motion.
  • the water pump in a motor vehicle pumps coolant through a coolant circuit of an internal combustion engine, having a pump housing, a rotatably mounted in the pump housing the impeller, flow channels in the pump housing for the coolant, and at least one is mounted in the pump housing, axially displaceable pot for adjusting the output of the pump.
  • the coolant that gathers between the impeller blades travels outward using centrifugal force, and suction draws the coolant into the water pump from the radiator.
  • US5785013 discloses an electrically driven coolant pump for an internal combustion engine comprising of a centrifugal pump for pumping a coolant, an electrical drive means for driving the pump, said electrical drive means including an electrically commutated brushless D.C. motor, and electronic circuit means connected to the D.C.
  • centrifugal pump including a pump housing and said electrical drive means including a motor having a stator with a stator housing, bolt means connecting said pump housing and said stator housing together through said cooling body, said cooling body being connected by said bolt means to said pump housing to be cooled by the coolant pumped by the pump, said electronic circuit means being connected by said bolt means to said cooling body in heat exchange relation therewith.
  • Fluid contamination often brings abrasive items in contact with the rotor & due to magnet effect it attracted to rotor and increases its outer diameter which leads to damage rotor casing when rotating at high rpm to fail prematurely.
  • the main object of the invention is to provide a customized water pump with separator and seal to protect the rotor against foreign particles from the cooling circuit.
  • Yet another object of the invention is to provide customized water pump with a separator placed between cooling circuit and rotor which blocks all the particles to enter into rotor area, preferably made up of non-corrosive durable material such as thermoplastics or any austenitic stainless steel or materials alike.
  • Yet another object of the invention is to provide customized water pump with at least one sealing lip made of an elastomeric or thermoplastic material that seals dynamically and statically against the rotating shaft.
  • Fig. 1 elucidates the exploded perspective view of the water pump according to the present invention
  • Fig. 1(a) elucidates the arrangement of aconventional water pump
  • Fig. 2 elucidates the arrangement of customised water pumpaccording to the present invention
  • Fig. 3 elucidates the arrangement of the conventional water pump, wherein the movement of fluid is directed around the rotor;
  • Fig. 4 elucidates the arrangement of customised water pump according to the present inventionwherein customised arrangement of water pump restricts the particles entering;
  • Fig. 5(a) elucidates the design of at least one separator according to the present invention, made up of thermoplastics or any austenitic stainless steel that separates Coolant from rotor area and also have slot in its design to guide sealing lip.
  • Fig. 5(b) elucidates the design of at least one sealing lip,according to the present invention, preferably made of an elastomeric or thermoplastic material that seals dynamically and statically against the rotating shaft.
  • the present invention provides customized water pump with separator and seal to protect the rotor against foreign particles from cooling circuit.
  • the invention improves the durability and robustness of the product to a great extent by providing a complete sealing of the rotor, shielding it completely from the external particles in working fluid, by the help of the separator & rotary shaft seal.
  • the improvement in the water pump includes customized sealing with two major components: l.
  • Separator A separator is lined between cooling circuit and rotor which blocks all the coolant to enter into rotor area, preferably made up of non-corrosive durable material such as thermoplastics or any austenitic stainless steel or materials alike.
  • Rotary Shaft Seal Radial shaft seals are used between rotating and stationary components or between two components in relative motion, comprising of two main parts: a) A cylindrical outer covering of sheet steel case that has the requisite interference fit to seal statically against the housing bore; and
  • a sealing lip made of an elastomeric or thermoplastic material that seals dynamically and statically against the rotating shaft.
  • the present invention relates to a water pump for conveying a coolant, in particular for use in the cooling circuit of the internal combustion engine of motor vehicles.
  • Fig. 1 elucidatesan exploded viewof the customized water pump 100 to provide effective sealing of the rotor part from any foreign particles present in the cooling circuit.
  • the customized water pump 100 comprises of at least one volute casing 103; at least one shrouded impeller 104; at least one shaft 105; at least one rotary shaft seal 102; at least one separatorlOl; at least one rotor assembly 106; a plurality of screws 107; at least one rotor casing 108; at least one statorl09; a pluralty of terminals 110; a cover 112 before a housing 111 and another cover 113 placed on the other side of the housing 113 and at least one grommet 114; wherein the volute casing 103 receives the coolant pumped by the impeller 104; the rotary shaft seal 102 and separator 101 are assembled between the rotor assembly 106 and impeller 104 wherein the rotary shaft seal 102 is mounted with interference on inner diameter of the separator 101.
  • the separator 101 becomes fixed.
  • the rotary shaft seal 102 is stationary and fixed from the outer periphery and will be in contact with rotating shaftl05 from the inner surface to prevent the flow of foreign particles and abrasive particles from causing any damage to rotor 104 and rotor casing 108.
  • the complete assembly including rotor assembly 106, shaft 105, rotary shaft seal 102 and separator 101 are mounted on the guiding pin 115 and rotates around guiding pin 115 during operation.
  • FIG. 1(a) elucidates the conventional arrangement of the water pump, the figure clearly highlights that there is no sealing arrangement and system between the cooling circuit and rotor. The absence of sealing arrangement causes the abrasive particles come in contact with the rotor part leading to damage.
  • FIG. 2 elucidates the arrangement of customised water pump.
  • water pump 100 provides customized sealing with two major components: at least one separator 101 is inserted between cooling circuit and rotor which blocks all the coolant to enter into rotor area, preferably made up of non-corrosive durable material such as thermoplastics or any austenitic stainless steel or materials alike and at least one rotary shaft seal 102 which is in contact with rotating shaft 105 and prevents any damage to rotor or rotor casing preferably made of elastomeric or thermoplastic material.
  • non-corrosive durable material such as thermoplastics or any austenitic stainless steel or materials alike
  • rotary shaft seal 102 which is in contact with rotating shaft 105 and prevents any damage to rotor or rotor casing preferably made of elastomeric or thermoplastic material.
  • FIG. 3 elucidates the arrangement of the conventional water pump, wherein the movement of fluid is directed around the rotor.
  • FIG. 4 elucidates the arrangement of customised water pump wherein customised arrangement in water pump restricts the fluid entering the rotor area, by incorporating separator 101 and rotary shaft seall02.
  • FIGS. 5(a) & 5(b) elucidates separator 101 androtary shaft seal 102 used between rotating and stationary components or between two components in relative motion in the arrangement of customized water pump comprising of two main parts:
  • Fig. 5(a) shows position of at least one cylindrical outer covering of sheet steel case i.e. separator 101 that has the requisite interference fit to seal statically against the housing bore;
  • Fig. 5(b) shows the position of at least one sealing lip, preferably made of an elastomeric or thermoplastic material i.e. rotary shaft seal 102 that seals dynamically and statically against the rotating shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une pompe à eau personnalisée pourvue d'un séparateur et d'un joint pour protéger le rotor vis-à-vis de particules étrangères provenant du circuit de refroidissement. L'invention concerne une pompe à eau personnalisée dotée d'au moins un séparateur placé entre le circuit de refroidissement et le rotor, qui empêche la totalité du liquide de refroidissement d'entrer dans la zone du rotor ; et au moins un joint d'arbre rotatif utilisé entre les composants rotatifs et stationnaires ou entre deux composants en mouvement relatif.
PCT/IB2017/052014 2016-04-07 2017-04-07 Pompe à eau dotée d'un séparateur et d'un joint pour protéger le rotor WO2017175189A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17778775.1A EP3440362A4 (fr) 2016-04-07 2017-04-07 Pompe à eau dotée d'un séparateur et d'un joint pour protéger le rotor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201611012373 2016-04-07
IN201611012373 2016-04-07

Publications (1)

Publication Number Publication Date
WO2017175189A1 true WO2017175189A1 (fr) 2017-10-12

Family

ID=60001000

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/052014 WO2017175189A1 (fr) 2016-04-07 2017-04-07 Pompe à eau dotée d'un séparateur et d'un joint pour protéger le rotor

Country Status (2)

Country Link
EP (1) EP3440362A4 (fr)
WO (1) WO2017175189A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186635A (en) * 1986-02-18 1987-08-19 Easthorpe Investments Ltd Centrifugal pump
KR20130080184A (ko) * 2012-01-04 2013-07-12 캄텍주식회사 차량용 워터펌프

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213797A (en) * 1963-02-12 1965-10-26 Kenton D Mcmahan Centrifugal pumps
GB1204165A (en) * 1967-08-19 1970-09-03 Loewe Pumpenfabrik G M B H Improvements in or relating to motor-driven impeller pumps
DE102009028144A1 (de) * 2009-07-31 2011-02-03 Robert Bosch Gmbh Fluidpumpenvorrichtung mit Dichtungseinrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186635A (en) * 1986-02-18 1987-08-19 Easthorpe Investments Ltd Centrifugal pump
KR20130080184A (ko) * 2012-01-04 2013-07-12 캄텍주식회사 차량용 워터펌프

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3440362A4 *

Also Published As

Publication number Publication date
EP3440362A4 (fr) 2020-01-08
EP3440362A1 (fr) 2019-02-13

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