EP1292461A2 - Tuyere de ventilateur moulee par soufflage - Google Patents

Tuyere de ventilateur moulee par soufflage

Info

Publication number
EP1292461A2
EP1292461A2 EP01946555A EP01946555A EP1292461A2 EP 1292461 A2 EP1292461 A2 EP 1292461A2 EP 01946555 A EP01946555 A EP 01946555A EP 01946555 A EP01946555 A EP 01946555A EP 1292461 A2 EP1292461 A2 EP 1292461A2
Authority
EP
European Patent Office
Prior art keywords
fan shroud
fan
reservoir
spiders
face
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Withdrawn
Application number
EP01946555A
Other languages
German (de)
English (en)
Inventor
William D. Plant
Stephen C. Hiltner
Richard D. Rhodes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
McCord Winn Textron Inc
Original Assignee
McCord Winn Textron Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by McCord Winn Textron Inc filed Critical McCord Winn Textron Inc
Publication of EP1292461A2 publication Critical patent/EP1292461A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • 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
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • 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
    • F01P2031/00—Fail safe
    • F01P2031/20—Warning devices

Definitions

  • This invention relates generally to a fan shroud assembly for an automotive coolant fan, and more particularly to a blow molded automotive coolant fan shroud which integrates a motor mount into the fan shroud body, wherein said integrated motor mount comprises single-wall or double-wall construction and which attenuates motor vibration transmission.
  • the present invention relates to a fan shroud that is simultaneously prepared with a separate bottle or container positioned in the center waste-area of the shroud, wherein the precursor parison used to prepare such shroud/bottle combination in a blow-molding operation can be programmed to form selected thicker wall sections as may be required for selected locations in the shroud construction.
  • the present invention relates to the novel use of a die-trimming procedure as applied to a fan shroud blow-molded assembly which provides improved tolerances in the final product.
  • U.S. Patent No. 5,649,587 discloses a blow-molded radiator fan shroud which provides an improved, compact and efficient blow-molded radiator fan shroud with integral fluid receptacles. Oppositely disposed recesses are formed in the front and rear faces to form a wall for dividing the hollow body into two or more internal chambers.
  • 3,692,004 which discloses a fan shroud and fluid receptacle arrangement including a cylindrical band or collar extending away from a radiator, and a radiator fluid receptacle and a windshield washer fluid receptacle integrally molded on opposite side surfaces of the cylindrical band or collar. Furthermore, attention is also directed to the following U.S. Patents: 3,833,054; 4,030,541; 4,709,757; 4,762,244; 4,763,724; 4,947,931 and 5,107,924. Finally, attention is also directed to U.S. Appln. Serial No. 09/177,458, filed October 22, 1998, owned by the assignee herein, which relates to the use of a fan shroud with an air intake arrangement.
  • a fan shroud and receptacle arrangement for use adjacent a vehicle radiator and around one or more engine cooling fans, the improvement which comprises an integrated motor mount in the fan shroud body, wherein said integrated motor mount comprises double-wall construction, optionally compressed into a single layer, and wherein said double-wall construction can be adjusted by programmed parison formation in a corresponding blow-molding operation.
  • the present invention relates to the preparation of a fan-shroud assembly wherein the center waste-area of the shroud is simultaneously prepared with a separate bottle/container which bottle/container is not part of the final fan shroud, and which bottle may contain ribs or weirs to ultimately assist in dissolved gas removal to thereby improve the heat-transfer efficiency of the fluid to be contained therein.
  • the present invention relates to the use of additives in the plastic of the shroud which additives are designed to change color/shape based upon liquid temperature to thereby indicate coolant levels.
  • FIG. 1 illustrates a perspective view of the blow molded fan shroud of the present invention.
  • FIG. 2 illustrates in perspective view a second embodiment of the present invention.
  • FIG. 3 illustrates in exploded view the blow molded fan shroud and a reinforcing member.
  • FIG. 4 illustrates in cross-section high section modulus profiles of spiders.
  • FIG. 5 illustrates in perspective view a separate spider assembly.
  • the present invention comprises a fan shroud 10 for use with an automotive cooling system.
  • the fan shroud 10 comprises a hollow, double walled body of generally rectangular shape having a generally planar front face 12 and an opposed generally planar rear face.
  • the fan shroud 10 contains an opening 14 through the body of the fan shroud 10 defined by a cylindrical wall.
  • the opening 14 may have a rectangular geometry on the front face that transitions to a circular opening on the rear face.
  • fan shroud 10 attenuates vibration transmission from the fan assembly.
  • vibration attenuation has reached levels of about 40%.
  • the hollow, double-walled body of the fan shroud 10 is configured as a chamber, as for holding fluid.
  • the body of fan shroud 10 may be configured into multiple chambers through the use of pinch lines 16 sealing opposed walls together.
  • Each chamber preferably includes appropriate openings and fittings necessary for filling, draining, and/or plumbing requirements depending upon the end use application of the chamber.
  • the opening 14 in fan shroud 10 may be configured to direct the flow of air from the fan 26 to the engine, to be employed, for example, for additional engine cooling or forced induction feed for engine combustion.
  • the air stream from opening 14 may be directed by means of diffusers or deflectors positioned about the periphery of the opening 14. Alternately, the opening 14 may be fitted with ducting to communicate the air flow to appropriate secondary uses.
  • the fan shroud 10 further contains spiders 18 extending radially from the circumference of the opening 14 toward the normal axis of the opening 14. Spiders 18 are connected to a fan motor mounting ring or plate 20 that is positioned concentrically with opening 14.
  • the fan motor mounting ring 20 preferably includes a reinforcing member 40. The reinforcing member may be disposed on the forward face of the fan motor mounting ring 20, on the rearward face of the fan motor mounting ring 20 as illustrated in FIG.
  • reinforcing member 40 comprises a metallic member.
  • reinforcing member 40 may comprise a reinforcing structure, such as fiber reinforced plastic.
  • spiders 18 are integral with fan shroud 10 as shown in FIG. 1, and are formed in the same blow molding operation as fan shroud 10. The concept of parison programming, i.e. forming the parison for the part with varying, and controlled, thickness about the length and circumference of the parison, is herein used to control the final thickness of the fan shroud 10 and of the spiders 18 formed therewith.
  • spiders 18 When spiders 18 are integrally molded with the fan shroud 10, spiders 18 may be formed as solid, or single walled members. Alternately, the strength of spiders 18 may be increased by forming the spiders 18 as hollow, double- walled members having at least one longitudinal hollow chamber 22 extending at least a portion of the length of the spider 18 by modifying the blow molding process. The structural integrity of spiders 18 may be further improved by molding spiders 18 in a high section modulus profile, for example a "N" or "I" cross-section, as shown in FIGS. 4A-4C. The high modulus profiles may therefore comprise a single continuous hollow chamber 22, or a plurality of hollow chambers 22 joined by regions of a pinch off 24.
  • the profile or shape of spiders 18 is also configured to provide maximum aerodynamic flow through fan shroud 10.
  • spiders 18 are formed integrally with fan shroud 10
  • the region defined by the perimeter of the opening 14 and adjacent spiders 18 will comprise a plurality of webs of material.
  • all of the webs be removed in a single step trimming operation using a V-die trimming process. This trimming process allows exact placement of the fan within opening 14, therein allowing minimal clearance between the tip of the fan and the wall of opening 14. The reduced clearance achievable through die trimming provides overall increased efficiency of the cooling fan.
  • spiders 18 may comprise a separately molded component 28 attached to fan shroud 10 during a secondary operation.
  • separately molded component 28 is injection molded from a reinforced plastic material, such as glass fiber reinforced nylon.
  • separately molded component 28 may be attached to fan shroud 10 using molded in securement means, for example collapsible post 30 and socket 32, or dovetail twist lock 34 fastening, as illustrated in cross-sectional views in FIG. 6 and FIG. 7 respectively.
  • molded in securement means for example collapsible post 30 and socket 32, or dovetail twist lock 34 fastening, as illustrated in cross-sectional views in FIG. 6 and FIG. 7 respectively.
  • Corresponding male and female components of the molded in securement means are molded to the spiders 18 and the fan shroud 10 respectively.
  • the joint may be further strengthened by assembling spiders 18 to the fan shroud 10 promptly after the fan shroud 10 is removed from the mold.
  • the molded in securement means will tighten together providing a secure joint.
  • a web, or waste area, of material will be molded over opening 14 of fan shroud 10 as a natural product of the blow molding operation.
  • the waste inherent in blow molding the fan shroud 10 may be reduced by molding a separate bottle 36 or reservoir, preferable a hot or pressurized bottle, in the center of the waste area or the fan shroud 10, as illustrated in FIG. 8.
  • the size and shape of the bottle 36 is constrained only by the dimensions of opening 14, as illustrated in broken lines in FIG. 8.
  • the thickness of the bottle 36 can be controlled using parison programming as described above.
  • the bottle 36 may be molded with flow disrupters, such as ribs or weirs, to assist deaeration of the fluid in the bottle, and thereby increase the heat transfer efficiency of the fluid.
  • flow disrupters such as ribs or weirs
  • the bottle 36 will be removed, as by V-die trimming, as a secondary process.
  • a final aspect of the present invention is the incorporation of a fluid level indicator integrated into at least one of the chambers of the fan shroud 10 or into the bottle 36 molded into the waste area of the fan shroud 10.
  • the level of a fluid above ambient temperature, such as coolant can be indicated using a reversible heat activated colorant.
  • the colorant When the temperature of the coolant, and therefore the plastic, exceeds a predetermined magnitude the colorant is activated and the color of the plastic changes.
  • the reversible nature of the colorant is such that when the coolant, and therefore the plastic, falls below the predetermined level the coloration reverses. In this manner, when the chamber or bottle is partially filled with fluid above the predetermined temperature, the portion of the chamber or bottle in contact with the fluid will appear as a different color than the portion of the chamber or bottle not in contact with the fluid above the predetermined temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une tuyère (10) de ventilateur moulée par soufflage utilisée dans un système de refroidissement d'automobile. La tuyère (10) de ventilateur intègre un anneau ou plaque (20) de montage de moteur servant de support à un moteur de commande du ventilateur. L'anneau ou plaque (20) de montage du moteur est séparé d'une surface avant de la tuyère (10) du ventilateur par plusieurs croisillons (18). Les croisillons (18) sont formés de façon à inclure au moins une partie avec une section transversale ou une chambre (22) creuse.
EP01946555A 2000-06-19 2001-06-19 Tuyere de ventilateur moulee par soufflage Withdrawn EP1292461A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US21239500P 2000-06-19 2000-06-19
US212395P 2000-06-19
PCT/US2001/019623 WO2001098099A1 (fr) 2000-06-19 2001-06-19 Tuyere de ventilateur moulee par soufflage

Publications (1)

Publication Number Publication Date
EP1292461A2 true EP1292461A2 (fr) 2003-03-19

Family

ID=22790822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01946555A Withdrawn EP1292461A2 (fr) 2000-06-19 2001-06-19 Tuyere de ventilateur moulee par soufflage

Country Status (5)

Country Link
EP (1) EP1292461A2 (fr)
JP (1) JP2003535764A (fr)
AU (1) AU2001268583A1 (fr)
CA (1) CA2413378A1 (fr)
WO (1) WO2001098099A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6871697B2 (en) * 2002-01-18 2005-03-29 Clark Equipment Company Integrated fluid reservoir and heat exchanger ducts

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221971C2 (de) 1972-05-05 1974-04-11 Buderus'sche Eisenwerke, 6330 Wetzlar Heizkörper aus thermoplastischem Material
US4030541A (en) 1974-06-08 1977-06-21 Hoechst Aktiengesellschaft Multi-element type radiator of plastic material
US4164492A (en) * 1978-03-14 1979-08-14 Alco Standard Corporation Novel catalyst for curing polyester resins and method for determining the degree of cure in polyester and epoxy resin systems
DE3210260C1 (de) * 1982-03-20 1983-10-13 Ford-Werke AG, 5000 Köln Behaelter fuer Betriebsmittel in Kraftfahrzeugen
DE3444273C1 (de) 1984-12-05 1985-11-28 Bayerische Motoren Werke AG, 8000 München Aus Kunststoff hergestellter Wasserkasten fuer einen Querstrom-Kuehler fuer Brennkraftmaschinen
US4709757A (en) 1986-11-24 1987-12-01 Johnson Service Company Method of injection molding and plastic part formed thereby
US4762244A (en) 1987-09-23 1988-08-09 Thermo King Corporation Radiator overflow container
US4947931A (en) 1989-12-28 1990-08-14 Vitacco Richard L Plastic vehicular radiator-condenser with metal cooling inserts
DE9002438U1 (de) 1990-03-02 1990-04-12 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Kunststoffwasserkasten für Wärmetauscher
US5244347A (en) * 1991-10-11 1993-09-14 Siemens Automotive Limited High efficiency, low noise, axial flow fan
US5180279A (en) * 1992-03-31 1993-01-19 General Motors Corporation Heat shield and deflector for engine cooling fan motor
JP3338124B2 (ja) * 1993-05-31 2002-10-28 三菱化学株式会社 プロピレン系耐熱樹脂成形材料及びその成形体
US5341871A (en) * 1993-06-21 1994-08-30 General Motors Corporation Engine cooling fan assembly with snap-on retainers
JP3409496B2 (ja) * 1995-03-30 2003-05-26 日産自動車株式会社 ラジエータ構造
US5932309A (en) * 1995-09-28 1999-08-03 Alliedsignal Inc. Colored articles and compositions and methods for their fabrication
US5671803A (en) * 1995-10-23 1997-09-30 General Motors Corporation Modular condenser and fan shroud assembly
US5649587A (en) 1996-02-23 1997-07-22 Mccord Winn Textron, Inc. Fan shroud and receptacle arrangement
JP3293546B2 (ja) * 1997-06-16 2002-06-17 株式会社デンソー エンジン冷却装置のファンシュラウド
JP3917269B2 (ja) * 1997-10-07 2007-05-23 パイロットインキ株式会社 可逆熱変色性組成物
US6189492B1 (en) * 1999-04-07 2001-02-20 Custom Molder, Inc. Automotive fan shroud and method of making

Non-Patent Citations (1)

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Title
See references of WO0198099A1 *

Also Published As

Publication number Publication date
JP2003535764A (ja) 2003-12-02
WO2001098099A1 (fr) 2001-12-27
WO2001098099A8 (fr) 2002-04-04
CA2413378A1 (fr) 2001-12-27
AU2001268583A1 (en) 2002-01-02

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