US3858644A - Fan shroud exit structure - Google Patents
Fan shroud exit structure Download PDFInfo
- Publication number
- US3858644A US3858644A US348437A US34843773A US3858644A US 3858644 A US3858644 A US 3858644A US 348437 A US348437 A US 348437A US 34843773 A US34843773 A US 34843773A US 3858644 A US3858644 A US 3858644A
- Authority
- US
- United States
- Prior art keywords
- fan
- shroud
- section
- radial
- exit
- 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.)
- Expired - Lifetime
Links
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
-
- 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
- F01P5/06—Guiding or ducting air to, or from, ducted fans
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/914—Device to control boundary layer
Definitions
- ABSTRACT An internal combustion engine, having a heat exchange system, a fan for moving air therethrough and a shroud and shroud exit section for controlling the air path.
- the shroud exit encloses the fan and includes throat (CF) radial expander (R) and radial flat (RF) sections whereby air is drawn through the heat exchanger axially and expelled radially along said exit sections simultaneously interruption sections or cutout portion are strategically located in the shroud exit to direct parts of the air flow whereby they exit axially.
- the fan has a projected axial width (AW) such that a general relationship exists with the shroud exit sections: CF AW/3, RF AW/3, and R 2AW/3.
- a vehicle having a fluid cooled internal combustion engine and a radiator cooling system for dissipating the heat produced.
- the radiator cooling system includes a standard radiator, an axial flow fan facing the radiator and having a plurality of angular blades whereby air is drawn rearwardly through the radiator.
- a shroud rearwardly extends from the back face of the radiator to channel air through the radiator and hamper the fan from drawing air which has not passed through or at least come in contact with the perforated heat exchanging surfaces of the radiator. For the most part the shroud encloses the entire perforated heat exchanging rear area of the radiator.
- a fan shroud exit means is also provided having secured to the backwardly extending portion of the fan shroud and extending rearwardly thereof as well as outwardly.
- this exit section in combination with an axial flow fan located therein, the location thereof also being important, which allows the air stream to be converged and part directed radially and part axially away.
- the simultaneous discharge of air via axial and radial flow paths around the circumference of the shroud exit allows avoidance of structural obstructions etc., while still achieving an optimum air flow.
- this invention is also applicable to a stationary engine where it is desired to tailor the air stream.
- FIG. I is a side elevation of an internal combustion engine showing the device of my invention attached to a vehicle;
- FIG. 2 is a fragmentary vertical section showing the relationship of the fan to the contoured exit section
- FIG. 3 is a top view of a tractor showing the air stream of the prior art fan assemblies
- FIG. 4 is a top view of a tractor showing the directed air stream achieved with the radiator cooling assembly herein disclosed;
- FIG. 5 is a rear view of the shroud exit section showing one embodiment of the interruption section means
- FIG. 6 is a side view of FIG. 5;
- FIG. 7 is a rear view of the shroud exit section showing a second embodiment of the interruption section means.
- FIG. 8 is a top view of the shroud exit of FIG. 7.
- FIG. I there is shown a conventional water cooled heat producing internal combustion engine means 10 forwardly carried on longitudinally extending parallel support means 12 of vehicle means 14.
- vehicle means I4 is a tractor, however, as will hereafter become more apparent this invention can be applied to any type of vehicle employing a heat generating internal combustion engine or any other portable or stationary device requiring an air moving fan.
- a water cooling radiator means 16 employed to dissipate the engine generated heat. Water flows between the water jacket on the engine (not shown) and the radiator through a series of fluid communicating means 118 and 20.
- sheet metal means 22 encircles engine means It) thereby forming the engine compartment area means 24.
- fan means 28 Carried at the forward end of engine means 10 is a fan shaft means 26 whereby power is delivered to drive fan means 28.
- fan means 28 is a rotatable suction fan positioned opposite the radiator means 16, and normally creating a flow of air or drawing in a stream of cooling air rearwardly through the radiator with a subsequent axial dis charge thereof. This axial flow of air is directed to the fan means by a shroud means 30.
- the particular shape of the forward section 32 is dependent upon the shape and design of the perforated heat exchanging design of the radiator.
- connection between the leading edge 32 and the rear face 34 of the radiator will be dependent upon the particular characteristics of these componets, that is, some connections being providedwith air gaps while others are substantially sealed over the entire circumference of the enclosure.
- the entire perforated area is substantially sealed against the passage of air from any other direction except through the radiator. From the forward edges the shroud means 30 (be it a taper transition as shown or a box type) converges rearwardly to a circular rear section 36.
- Exit shroud means 38 includes a tubular means 40, an arcuated means portion 42 and a flat flange portion means 44.
- tubular means portion 40 forms the leading edge of the exit shroud means while arcuated means portion 42 still extending generally rearwardly simultaneously extends outwardly around an arch the reference point of which is defined as point 46.
- arcuated section 42 has a general bell-shaped appearance being a section of a transition surface or some approximation thereof.
- arcuated section 42 is a section of a constant radius arch.
- Flat flange portion 44 forms the trailing edge of exit shroud means 38 and has a major plane perpendicular to that of tubular section 40.
- tubular means 40 will be hereafter referred to as the cylindrical throat means
- arcuated portion 42 will be referred to as the radial expanding means
- flat flange portion 44 will be referred to as radial flat means.
- Overall the entire fan shroud exit means 38 has a horn-like configuration.
- fan means 28 is rotatingly carried adjacent said radiator means and operably to establish a flow of cooling air therethrough.
- Fan means 28 includes a plurality of fan blade means 48 (only one shown) as is well known in the art. As shown in FIG. 2 fan means 28 is surrounded by said contoured fan shroud exit section 38. The enclosure of the fan means 28 within shroud means 30 is such that a front plane struck out by the leading edge 50 is coextensive and passes through the leading section of throat means 40 and a rear plane struck out by trailing edge 52 is about coextensive and parallel with said radial flat portion 44. It should be noted, however, that there is a plus or minus error factor involved in both of these values of about 12 percent of AW. That is, the respective planes formed by the blade means can be within about 12 percent of optimum and still function satisfactorily within the scope of this invention. Thus, within this range the deflected air stream will still be substantially radial.
- RF AW/3, CF AW/3, and R 2AW/3 there RF is the length of the radial flat portion 44, CF is the length of the cylindrical throat section 40 and R is a radius of the radial expanding section 42 or distance from the reference point to the transition surface and AW is the projected axial width of fan 28.
- FIGS. 3 and 4 show the path in which air is dispersed by the fan means comprising again a standard assembly and the improved assembly, the improved assembly having louver means 56 to facilitate air dispersement.
- the amount or relation of the fan means 28 to the exit section means 38 is most conveniently expressed in terms of the amount of the fan which is exposed past the end of the shroud or projects rearwardly thereof. It has been found that a X equal to zero gives optimum results; however, reasonable results can be achieved by having X about equal to plus or minus 12 percent of AW. That is, as explained previously when the plane swept out by the rear edge is coextensive with the surface of the radial flat or within the tolerance set forth. By changing the orientation of the fan with respect to the fan exit section it is also possible to direct the air stream, straight back, at an angle off radial. etc., depending on preference and need.
- FIGS. 5 8 wherein are shown different embodiments of the interruption section means whereby the discharged air stream is part radial and part axially. Hence, it is possible to tailor the pattern of air discharged from shroud exit 38.
- the interruption section means 51 and 51a shown in FIG. 5 extend through both the radial flat means 44 and the transitional surface means 42.
- the interruption section means 51b and 51c shown in FIG. 7 extend through both the radial flat means 44 and the transitional surface means 42 and also forms an extension of the cylindrical throat means 40.
- interruption section means of different design and location.
- the cylindrical throat means 40 is cut back as abreviated throat means 55 it is possible to direct the straight axial flow radially. That is, the rear edge means 57 can be in a plane parallel with the plane passing through radial flat means 44 but transistionally disposed thereof. That is, a third plane perpendicular to edge means 57 would pass through fan means 28 some where between its front and rear plane. Such horizontal movement allows for further control of the air stream exiting adjacent the interruption section.
- a heat transfer system for an internal combustion engine comprising:
- a heat exchange means having a front and rear section
- a shroud including a forward section arranged to enclose said rear section, and a rearwardly extending unitary contoured exit section including means defining a cylindrical throat, a radial expanding section and a radial flat portion;
- a fan assembly including a plurality of fan blades having leading and trailing edges wherein the following relationship within plus or minus 12 percent of AW exists: RF AW/3, CF AW/3, and R 2AW/3 where RF is the length of the radial flat portion, CF is the length of the cylindrical throat, R is the radius of the radial expanding section and AW is the projected axial width of the fan means wherein the improvement comprises: an interruption section means in said shroud exit means whereby the continuity is changed and the fan induced stream of air will have radial and axial components.
- a cooling system for an internal combustion engine means comprising:
- a radiator means including a tube means, and a rearward area means
- a shroud means having a forward section arranged to include said rearward area, and a rearwardly extending unitary contoured exit section means including a cylindrical throat means, a radial expanding section means and a radial flat portion means;
- a fan assembly means including a plurality of fan blade means having leading and trailing edge means, said leading edge means being adjacent said radiator means, wherein the following relationship plus or minus 12 percent exists: RF AW/3, CF AW/3, and R 2AW/3 where RF is the length of the radial flat portion, CR is the length of the cylindrical throat, R is the radius of the radial expanding section and AW is the projected axial width of the fan whereby the fan induced stream of air is converged and directed out generally radially adjacent said radial flat portion means and generally axially adjacent said interruption section means.
- said radiator means includes a rearwardly extending perforated area means
- said shroud means entirely encloses said perforated area means
- said trailing edge of said fan means forms a plane coextensive with said radial flat means wherein the following relationship exists: RF AW/3, CF AW/3, and R 2AW/3 where RF is the length of the radial flat portion, CF is the length of the cylindrical throat, R is the radius of the radial expanding section and AW is the projected axial width of the fan.
- a vehicle having an operator station and an internal combustion engine, a radiator for cooling liquid from said engine, an axial flow fan axially facing said radiator and including a plurality of angular blades drawing air rearwardly through said radiator, and a shroud rearwardly extending from said radiator wherein the improvement comprises:
- a unitary fan shroud exit means secured to said shroud and extending rearwardly and outwardly including: a cylindrical throat means defining a leading edge, a radial expanding means and a radial flat means defining a trailing edge; said fan being enclosed therein, said blade means striking out a front plane coextensive with said cylindrical throat means wherein the following relationship exists: RF
- said fan shroud exit means is secured to said shroud around its entire circumference
- said interruption section means has a rear edge means, whereby a plane perpendicular to said edge means intersects said fan blade means between said front plane and said rear plane.
Abstract
Description
Claims (7)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US348437A US3858644A (en) | 1973-04-05 | 1973-04-05 | Fan shroud exit structure |
CA184,881A CA989264A (en) | 1973-04-05 | 1973-11-02 | Fan shroud exit structure |
DE2411268A DE2411268A1 (en) | 1973-04-05 | 1974-03-08 | COOLING UNIT, ESPECIALLY FOR VEHICLES |
FR7411232A FR2224319B1 (en) | 1973-04-05 | 1974-03-29 | |
SE7404429A SE405390B (en) | 1973-04-05 | 1974-04-02 | FOR MOTOR VEHICLES INTENDED HEAT TRANSFER DEVICE |
NL7404586.A NL158256B (en) | 1973-04-05 | 1974-04-03 | COOLING DEVICE, EQUIPPED WITH A RADIATOR, A FAN AND A RADIATOR WIRING AROUND THE FAN. |
IT50041/74A IT1004095B (en) | 1973-04-05 | 1974-04-03 | IMPROVEMENT IN THE ARRANGEMENT OF THE EFFUSOR FOR RADIATORS OF AND MOTOR VEHICLES |
JP49037772A JPS49129033A (en) | 1973-04-05 | 1974-04-03 | |
SU742014725A SU735161A3 (en) | 1973-04-05 | 1974-04-04 | Vehicle |
BR2686/74A BR7402686D0 (en) | 1973-04-05 | 1974-04-04 | PERFECTED COOLING AND HEAT DISSIPATION SYSTEMS AND VEHICLE USING THE SAME |
AU67566/74A AU471445B2 (en) | 1973-04-05 | 1974-04-04 | Fan shroud exit structure |
GB1516274A GB1467659A (en) | 1973-04-05 | 1974-04-05 | Fan and cowl assembly in a vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US348437A US3858644A (en) | 1973-04-05 | 1973-04-05 | Fan shroud exit structure |
Publications (1)
Publication Number | Publication Date |
---|---|
US3858644A true US3858644A (en) | 1975-01-07 |
Family
ID=23368053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US348437A Expired - Lifetime US3858644A (en) | 1973-04-05 | 1973-04-05 | Fan shroud exit structure |
Country Status (12)
Country | Link |
---|---|
US (1) | US3858644A (en) |
JP (1) | JPS49129033A (en) |
AU (1) | AU471445B2 (en) |
BR (1) | BR7402686D0 (en) |
CA (1) | CA989264A (en) |
DE (1) | DE2411268A1 (en) |
FR (1) | FR2224319B1 (en) |
GB (1) | GB1467659A (en) |
IT (1) | IT1004095B (en) |
NL (1) | NL158256B (en) |
SE (1) | SE405390B (en) |
SU (1) | SU735161A3 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3937192A (en) * | 1974-09-03 | 1976-02-10 | General Motors Corporation | Ejector fan shroud arrangement |
US3964449A (en) * | 1974-04-08 | 1976-06-22 | Hans List | Cooler-cum-blower assembly for internal combustion engines |
US3995603A (en) * | 1974-04-08 | 1976-12-07 | Hans List | Cooler-cum-blower assembly for internal combustion engines |
US4018297A (en) * | 1975-11-03 | 1977-04-19 | Allis-Chalmers Corporation | Four-piece fan shroud |
US4120271A (en) * | 1975-09-09 | 1978-10-17 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Ventilating arrangement for an engine compartment |
US4173995A (en) * | 1975-02-24 | 1979-11-13 | International Harvester Company | Recirculation barrier for a heat transfer system |
US4194556A (en) * | 1978-01-13 | 1980-03-25 | Toyota Jidosha Kogyo Kabushiki Kaisha | Cooling apparatus for an internal combustion engine |
EP0026997A1 (en) * | 1979-10-09 | 1981-04-15 | General Motors Corporation | Shroud arrangement for engine cooling fan |
US4394111A (en) * | 1981-09-11 | 1983-07-19 | Snyder General Corporation | Top cover, motor, fan and fan shroud assembly for an air conditioning unit |
US20040156712A1 (en) * | 2003-01-29 | 2004-08-12 | Siemens Vdo Automotive Inc. | Integral tip seal in a fan-shroud structure |
US20050002799A1 (en) * | 2003-06-03 | 2005-01-06 | Saied Fathi | Radiator cooling fan replacement to increase engine efficiency |
US20060272800A1 (en) * | 2005-06-02 | 2006-12-07 | Paccar Inc | Radiator fan shroud with flow directing ports |
US20070224044A1 (en) * | 2006-03-27 | 2007-09-27 | Valeo, Inc. | Cooling fan using coanda effect to reduce recirculation |
US20090162195A1 (en) * | 2007-12-21 | 2009-06-25 | Paccar Inc | Fan ring shroud assembly |
WO2010081813A1 (en) * | 2009-01-14 | 2010-07-22 | Novenco A/S | An axial blower |
JP2010530949A (en) * | 2007-06-22 | 2010-09-16 | サーモ キング ドイチュラント ゲーエムベーハー | Refrigerated containers for land, road and rail vehicles |
US20100242527A1 (en) * | 2007-06-22 | 2010-09-30 | Ole Thogersen | Refrigerated container for ships |
US20110293419A1 (en) * | 2010-05-31 | 2011-12-01 | Hisanori Koya | System and Methods for Wind Energy Recapture From a Non Natural Wind Source |
US20120307440A1 (en) * | 2010-02-26 | 2012-12-06 | Franz John P | Mixed-flow ducted fan |
WO2015050769A1 (en) * | 2013-10-04 | 2015-04-09 | Caterpillar Inc. | Double bell mouth shroud |
USD736261S1 (en) * | 2012-11-29 | 2015-08-11 | Cummins Inc. | Shroud |
US20170152854A1 (en) * | 2014-08-18 | 2017-06-01 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Axial fan |
US20200291960A1 (en) * | 2019-03-15 | 2020-09-17 | Deere & Company | Fan shroud |
USD921883S1 (en) | 2018-07-25 | 2021-06-08 | Vornado Air, Llc | Fan head |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4137703C1 (en) * | 1991-11-15 | 1992-12-10 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De |
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US608377A (en) * | 1898-08-02 | Neil w | ||
US1190777A (en) * | 1915-06-15 | 1916-07-11 | Motor Cooling Systems Company | Cooling system. |
US1519812A (en) * | 1923-06-04 | 1924-12-16 | Schneider Heinrich | Locomotive driven by internal-combustion engine |
US1671373A (en) * | 1927-10-24 | 1928-05-29 | Thomas B Martin | Double cooling fan for automobiles or the like |
US1691598A (en) * | 1925-08-23 | 1928-11-13 | Sulzer Ag | Internal-combustion-engine locomotive |
US1966787A (en) * | 1931-03-27 | 1934-07-17 | Sulzer Ag | Cooling fan for vehicles driven by internal combustion engines |
US2142307A (en) * | 1934-06-14 | 1939-01-03 | Mey Rene De | Mounting of axial flow fans and the like |
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US2544490A (en) * | 1949-07-07 | 1951-03-06 | Jeffrey Mfg Co | Adjustable cowling for fans or the like |
US2664961A (en) * | 1947-10-24 | 1954-01-05 | Joy Mfg Co | Adjustable blade fan |
US2668523A (en) * | 1952-12-11 | 1954-02-09 | Chrysler Corp | Fan shroud |
US3144859A (en) * | 1962-02-15 | 1964-08-18 | Young Radiator Co | Fan-shroud structure and mounting |
US3508517A (en) * | 1967-02-20 | 1970-04-28 | Kort Propulsion Co Ltd | Nozzles or shrouds for ships' propellers |
US3675424A (en) * | 1969-05-19 | 1972-07-11 | Lips Nv | Nozzle for ship{40 s propeller with water ejection along the trailing edge of the nozzle |
-
1973
- 1973-04-05 US US348437A patent/US3858644A/en not_active Expired - Lifetime
- 1973-11-02 CA CA184,881A patent/CA989264A/en not_active Expired
-
1974
- 1974-03-08 DE DE2411268A patent/DE2411268A1/en not_active Ceased
- 1974-03-29 FR FR7411232A patent/FR2224319B1/fr not_active Expired
- 1974-04-02 SE SE7404429A patent/SE405390B/en unknown
- 1974-04-03 JP JP49037772A patent/JPS49129033A/ja active Pending
- 1974-04-03 IT IT50041/74A patent/IT1004095B/en active
- 1974-04-03 NL NL7404586.A patent/NL158256B/en unknown
- 1974-04-04 AU AU67566/74A patent/AU471445B2/en not_active Expired
- 1974-04-04 SU SU742014725A patent/SU735161A3/en active
- 1974-04-04 BR BR2686/74A patent/BR7402686D0/en unknown
- 1974-04-05 GB GB1516274A patent/GB1467659A/en not_active Expired
Patent Citations (16)
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US608377A (en) * | 1898-08-02 | Neil w | ||
US1190777A (en) * | 1915-06-15 | 1916-07-11 | Motor Cooling Systems Company | Cooling system. |
US1519812A (en) * | 1923-06-04 | 1924-12-16 | Schneider Heinrich | Locomotive driven by internal-combustion engine |
US1691598A (en) * | 1925-08-23 | 1928-11-13 | Sulzer Ag | Internal-combustion-engine locomotive |
US1671373A (en) * | 1927-10-24 | 1928-05-29 | Thomas B Martin | Double cooling fan for automobiles or the like |
US1966787A (en) * | 1931-03-27 | 1934-07-17 | Sulzer Ag | Cooling fan for vehicles driven by internal combustion engines |
US2142307A (en) * | 1934-06-14 | 1939-01-03 | Mey Rene De | Mounting of axial flow fans and the like |
US2252256A (en) * | 1939-01-11 | 1941-08-12 | Harris Eliot Huntington | Sound attenuator for air impellers |
US2225398A (en) * | 1939-09-13 | 1940-12-17 | Clyde M Hamblin | Construction of ventilating fans |
US2415621A (en) * | 1944-10-20 | 1947-02-11 | Solar Aircraft Co | Fan |
US2664961A (en) * | 1947-10-24 | 1954-01-05 | Joy Mfg Co | Adjustable blade fan |
US2544490A (en) * | 1949-07-07 | 1951-03-06 | Jeffrey Mfg Co | Adjustable cowling for fans or the like |
US2668523A (en) * | 1952-12-11 | 1954-02-09 | Chrysler Corp | Fan shroud |
US3144859A (en) * | 1962-02-15 | 1964-08-18 | Young Radiator Co | Fan-shroud structure and mounting |
US3508517A (en) * | 1967-02-20 | 1970-04-28 | Kort Propulsion Co Ltd | Nozzles or shrouds for ships' propellers |
US3675424A (en) * | 1969-05-19 | 1972-07-11 | Lips Nv | Nozzle for ship{40 s propeller with water ejection along the trailing edge of the nozzle |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3964449A (en) * | 1974-04-08 | 1976-06-22 | Hans List | Cooler-cum-blower assembly for internal combustion engines |
US3995603A (en) * | 1974-04-08 | 1976-12-07 | Hans List | Cooler-cum-blower assembly for internal combustion engines |
US3937192A (en) * | 1974-09-03 | 1976-02-10 | General Motors Corporation | Ejector fan shroud arrangement |
US4173995A (en) * | 1975-02-24 | 1979-11-13 | International Harvester Company | Recirculation barrier for a heat transfer system |
US4120271A (en) * | 1975-09-09 | 1978-10-17 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Ventilating arrangement for an engine compartment |
US4018297A (en) * | 1975-11-03 | 1977-04-19 | Allis-Chalmers Corporation | Four-piece fan shroud |
US4194556A (en) * | 1978-01-13 | 1980-03-25 | Toyota Jidosha Kogyo Kabushiki Kaisha | Cooling apparatus for an internal combustion engine |
EP0026997A1 (en) * | 1979-10-09 | 1981-04-15 | General Motors Corporation | Shroud arrangement for engine cooling fan |
US4394111A (en) * | 1981-09-11 | 1983-07-19 | Snyder General Corporation | Top cover, motor, fan and fan shroud assembly for an air conditioning unit |
US20040156712A1 (en) * | 2003-01-29 | 2004-08-12 | Siemens Vdo Automotive Inc. | Integral tip seal in a fan-shroud structure |
US6874990B2 (en) * | 2003-01-29 | 2005-04-05 | Siemens Vdo Automotive Inc. | Integral tip seal in a fan-shroud structure |
US20050002799A1 (en) * | 2003-06-03 | 2005-01-06 | Saied Fathi | Radiator cooling fan replacement to increase engine efficiency |
US7008175B2 (en) * | 2003-06-03 | 2006-03-07 | Saied Fathi | Radiator cooling fan replacement to increase engine efficiency |
WO2005119011A1 (en) * | 2004-05-24 | 2005-12-15 | Saied Fathi | Radiator cooling fan replacement to increase engine efficiency |
US20060272800A1 (en) * | 2005-06-02 | 2006-12-07 | Paccar Inc | Radiator fan shroud with flow directing ports |
US7478993B2 (en) | 2006-03-27 | 2009-01-20 | Valeo, Inc. | Cooling fan using Coanda effect to reduce recirculation |
US20070224044A1 (en) * | 2006-03-27 | 2007-09-27 | Valeo, Inc. | Cooling fan using coanda effect to reduce recirculation |
JP2010530949A (en) * | 2007-06-22 | 2010-09-16 | サーモ キング ドイチュラント ゲーエムベーハー | Refrigerated containers for land, road and rail vehicles |
US20100242527A1 (en) * | 2007-06-22 | 2010-09-30 | Ole Thogersen | Refrigerated container for ships |
US20100251753A1 (en) * | 2007-06-22 | 2010-10-07 | Ole Thogersen | Refrigerating container for land, road and rail vehicles |
US8221074B2 (en) | 2007-12-21 | 2012-07-17 | Paccar Inc | Fan ring shroud assembly |
US20090162195A1 (en) * | 2007-12-21 | 2009-06-25 | Paccar Inc | Fan ring shroud assembly |
WO2010081813A1 (en) * | 2009-01-14 | 2010-07-22 | Novenco A/S | An axial blower |
US20120307440A1 (en) * | 2010-02-26 | 2012-12-06 | Franz John P | Mixed-flow ducted fan |
US8649171B2 (en) * | 2010-02-26 | 2014-02-11 | Hewlett-Packard Development Company, L.P. | Mixed-flow ducted fan |
US20110293419A1 (en) * | 2010-05-31 | 2011-12-01 | Hisanori Koya | System and Methods for Wind Energy Recapture From a Non Natural Wind Source |
US8939724B2 (en) * | 2010-05-31 | 2015-01-27 | Green Earth Power Company Limited | System and methods for wind energy recapture from a non natural wind source |
USD736261S1 (en) * | 2012-11-29 | 2015-08-11 | Cummins Inc. | Shroud |
WO2015050769A1 (en) * | 2013-10-04 | 2015-04-09 | Caterpillar Inc. | Double bell mouth shroud |
US9551356B2 (en) | 2013-10-04 | 2017-01-24 | Caterpillar Inc. | Double bell mouth shroud |
US20170152854A1 (en) * | 2014-08-18 | 2017-06-01 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Axial fan |
US11365741B2 (en) * | 2014-08-18 | 2022-06-21 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Axial fan with increased rotor diameter |
USD921883S1 (en) | 2018-07-25 | 2021-06-08 | Vornado Air, Llc | Fan head |
US20200291960A1 (en) * | 2019-03-15 | 2020-09-17 | Deere & Company | Fan shroud |
US10947991B2 (en) * | 2019-03-15 | 2021-03-16 | Deere & Company | Fan shroud |
Also Published As
Publication number | Publication date |
---|---|
DE2411268A1 (en) | 1974-10-24 |
BR7402686D0 (en) | 1974-11-19 |
FR2224319A1 (en) | 1974-10-31 |
AU471445B2 (en) | 1976-04-29 |
SU735161A3 (en) | 1980-05-15 |
SE405390B (en) | 1978-12-04 |
AU6756674A (en) | 1975-10-09 |
CA989264A (en) | 1976-05-18 |
IT1004095B (en) | 1976-07-10 |
FR2224319B1 (en) | 1978-03-10 |
GB1467659A (en) | 1977-03-16 |
JPS49129033A (en) | 1974-12-10 |
NL7404586A (en) | 1974-10-08 |
NL158256B (en) | 1978-10-16 |
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