EP2809538A2 - Kühlsystem mit rezirkulationsschutz - Google Patents
Kühlsystem mit rezirkulationsschutzInfo
- Publication number
- EP2809538A2 EP2809538A2 EP13703261.1A EP13703261A EP2809538A2 EP 2809538 A2 EP2809538 A2 EP 2809538A2 EP 13703261 A EP13703261 A EP 13703261A EP 2809538 A2 EP2809538 A2 EP 2809538A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- fan
- heat exchanger
- air
- grill
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
-
- 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
- F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/52—Radiator or grille guards ; Radiator grilles
- B60R2019/525—Radiator grilles
Definitions
- the present disclosure relates generally to a cooling system and, more particularly, to a cooling system having an anti-recirculation feature configured to enhance engine cooling.
- Most mobile machines are powered by an internal combustion engine, for example a diesel engine, a gasoline engine, or a gaseous-fuel powered engine.
- an internal combustion engine for example a diesel engine, a gasoline engine, or a gaseous-fuel powered engine.
- Each of these engines combust a mixture of fuel and air to generate a mechanical power output used to propel the machine.
- temperature of the engine and air drawn into the engine for combustion should be tightly controlled.
- Typical internal combustion engines are cooled by way of a heat exchanger and an axial cooling fan disposed adjacent (e.g. in front of or behind) the heat exchanger. Coolant from the engine is circulated through the heat exchanger, while the axial cooling fan directs a flow of fresh air through the heat exchanger to absorb heat from the coolant. The coolant, having dissipated heat to the air, is then circulated back through the engine to cool the engine. The air, after having absorbed heat from the heat exchanger, is directed to the atmosphere.
- the ⁇ 03 patent describes a cooling system having a dual-fan architecture, including a primary fan and a smaller secondary fan.
- the primary fan is disposed at one side of a heat exchanger to push air through the heat exchanger, while the smaller secondary fan is disposed at an opposing side of the heat exchanger to pull air through the heat exchanger.
- the smaller secondary fan is located at an area of lowest air flow at a center of the primary fan and is intended to eliminate recirculation of air back through the heat exchanger.
- the dual-fan architecture of the ⁇ 03 patent may help to reduce air recirculation through the heat exchanger, it may also be complicated, expensive, and difficult to package.
- the added fan and associated mounting and control components may decrease a reliability of the cooling system.
- the cooling system is directed to overcoming one or more of the problems set forth above and/or other problems of the prior art.
- the present disclosure is directed to a cooling system.
- the cooling system may include a heat exchanger fluidly connectable to the engine, and a fan situated adjacent the heat exchanger and configured to generate a flow of air through the heat exchanger.
- the cooling system may also include an anti-recirculation feature located adjacent the fan and configured to block the flow of air at a center of the fan and allow air to flow at a periphery of the fan.
- the present disclosure is directed to an engine grill.
- the engine grill may include an end portion, and a plurality of perforations formed within the end portion in a pattern around a middle of the end portion.
- the engine grill may also include an anti-recirculation feature situated at the middle of the end portion within the pattern of the plurality of perforations.
- Fig. 1 is a pictorial illustration of an exemplary disclosed machine
- Fig. 2 is a pictorial illustration of an exemplary disclosed cooling system that may be used in conjunction with the machine of Fig. 1;
- Fig. 3 is a pictorial illustration of an exemplary disclosed engine grill associated with the cooling system of Fig. 2.
- Fig. 1 illustrates an exemplary embodiment of a machine 10.
- Machine 10 may be a stationary or mobile machine that performs some type of operation associated with an industry such as mining, construction, farming, transportation, petroleum, or another industry known in the art.
- machine 10 may be an earth moving machine such as the motor grader shown in Fig. 1, a wheel loader, a track-type tractor, a haul truck, or another type of mobile machine.
- machine 10 may be associated with electric power generation, fluid (e.g., oil, water, gas, etc.) pumping, or another stationary application, if desired.
- machine 10 may include a frame 12 that supports an engine 14 within an enclosure 16.
- Enclosure 16 may include, among other things, a housing 18 and a removable cowling 20 that closes off an end of housing 18.
- Housing 18 may be provided with one or more air inlets 22 configured to allow air flow through at least a portion of enclosure 16 for cooling purposes, as will be described in more detail below.
- machine 10 may be equipped with a cooling system 24 that communicates with air inlets 22 to facilitate the production of power within engine 14.
- Cooling system 24 may include, among other things, a heat exchanger 26 disposed within housing 18 and fluidly connected to engine 14, and a fan 28 disposed within housing 18 adjacent heat exchanger 26.
- Heat exchanger 26 may embody the main radiator of engine 14 and be situated to dissipate heat from the coolant after it passes through engine 14. As the main radiator of engine 14, heat exchanger 26 may be a liquid-to-air type of exchanger.
- a flow of air may be directed from air inlets 22 through channels of heat exchanger 26 such that heat from coolant within adjacent channels is transferred to the air.
- the coolant passing through engine 14 may be cooled to below a predetermined operating temperature of engine 14.
- Cooling fan 28 may situated to generate the flow of air directed through heat exchanger 26.
- fan 28 may be located between heat exchanger 26 and cowling 20 to draw air from inlets 22 of housing 18 through heat exchanger 26, and push the air out through and end of cowling 20.
- Fan 28 may include, among other things, a hub 30 and a plurality of inclined blades 32 that extend radially outward from hub 30.
- Fan 28 may be driven by engine 14 directly (e.g., via a mechanical connection such as a pulley or gear drive) or indirectly (e.g., via a hydraulic or electric motor 34), and include mounting hardware 36 configured to fixedly connect fan 28 to engine cowling 20.
- Fan 28 may also be pivotally connected to heat exchanger 26 (e.g., at a lower edge of heat exchanger 26) such that fan 28 and heat exchanger 26 may together form a door to enclosure 16 (referring to Fig. 1) that can be selectively opened during servicing to provide access to fins of heat exchanger 26.
- a handle 38 located at an upper edge of cowling 20 may provide for manual locking and releasing of fan 28 and cowling 20 relative to heat exchanger 26.
- fan 28 may alternatively be mounted at an opposing side of heat-exchanger 26 relative to cowling 20 (i.e., between engine 14 and heat exchanger 26), if desired. In this alternative configuration, fan 28 may push air through heat exchanger 26 rather than pull air through heat exchanger 26.
- Cowling 20 may include an engine grill 40 located at an end thereof.
- Engine grill 40 may be configured to allow the air flow generated by fan 28 to pass through cowling 20, while simultaneously inhibiting passage of debris larger than a certain size.
- engine grill 40 may include a plurality of perforations 42 disposed in a pattern around a generally solid disc-shaped anti-recirculation feature 44 that is positioned concentric with fan 28 (at a general mid of engine grill 40 - referring to Fig. 2).
- perforations 42 may be arranged in a honeycomb configuration with a cross-sectional area of each perforation and/or density of perforations 42 being selected based on an intended application of machine 10.
- Engine grill 40 including anti-recirculation feature 44 may be made from any material known in the art, for example from a corrosion and/or heat resistant material or from another material that is coated in a corrosion and/or heat resistant coating.
- Engine grill 40 may include a generally planar first portion 46 and a generally planar second portion 48 that is located below first portion 46 (i.e., between first portion 46 and frame 12). As shown in Figs. 1 and 2, first portion 46, when assembled within cowling 20, may be inclined outward from an upper edge toward second portion 48. Second portion 48 may be tilted inward at a lower edge, away from first portion 46 and toward fan 28 and heat exchanger 26, such that an intersection of first and second portions 46, 48 is located furthest away from fan 28.
- a plurality of transverse corrugations 50 may be formed within first and second portions 46 to increase a rigidity of engine grill 40.
- Anti-recirculation feature 44 may be formed at least partly within both of first and second portions 46, 48, and corrugations 50 may pass through anti- recirculation feature 44.
- Engine grill 40 including anti-recirculation feature 44, perforations 42, and corrugations 50, may be fabricated from any suitable material (e.g., steel) as a single integral component through, for example, conventional stamping and punching operations. It is contemplated, however, that anti-recirculation feature 44 may alternatively be fabricated as a stand-alone disc-shaped component that can be subsequently assembled adjacent to and/or joined with engine grill 40, if desired.
- Anti-recirculation feature 44 may be designed to enhance performance of cooling system 24.
- anti-recirculation feature 44 may have geometry and be located to inhibit recirculation of warm air through heat exchanger 26.
- anti-recirculation feature 44 may have an outer diameter Dl greater than an outer diameter D2 of hub 30 (referring to Fig. 2), but less than an outer diameter D3 of blades 32. It has been found that as the outer diameter Dl of anti-recirculation feature 44 approaches the outer diameter D2 of hub 30, a greater amount of the air flow generated by fan 28 may be recirculated through heat exchanger 26.
- the disclosed cooling system may form a power unit applicable to any mobile or stationary machine where efficient engine cooling is desired.
- the disclosed cooling system may improve cooling efficiency by reducing an amount of air that is recirculated through an associated heat exchanger.
- the disclosed cooling system may employ anti-recirculation feature 44 to reduce the amount of recirculated air.
- anti- recirculation feature 44 may block higher pressure air flow from the outer periphery of fan 28 from being drawn back through a lower pressure center of fan 28 and heat exchanger 26. In this manner, a greater amount of cool fresh air may pass through heat exchanger 26, thereby increasing an amount of cooling and an associated efficiency of heat exchanger 26.
- anti-recirculation feature 44 may actually increase airflow through heat exchanger 26 by 5% or more. Noise reduction has also been shown to occur through the use of anti-recirculation feature 44.
- anti-recirculation feature 44 may be a stand-alone component (i.e., separate from engine grill 40) and located adjacent fan 28 at an upstream or downstream side of fan 28. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims and their equivalents.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/362,580 US20130192795A1 (en) | 2012-01-31 | 2012-01-31 | Cooling system having anti-recirculation feature |
PCT/US2013/023355 WO2013116124A2 (en) | 2012-01-31 | 2013-01-28 | Cooling system having anti-recirculation feature |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2809538A2 true EP2809538A2 (de) | 2014-12-10 |
Family
ID=47679081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13703261.1A Withdrawn EP2809538A2 (de) | 2012-01-31 | 2013-01-28 | Kühlsystem mit rezirkulationsschutz |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130192795A1 (de) |
EP (1) | EP2809538A2 (de) |
CN (1) | CN104245383B (de) |
WO (1) | WO2013116124A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102384676B (zh) * | 2011-10-31 | 2013-05-29 | 陆加孚 | 一种高效空气换热器 |
USD900887S1 (en) | 2019-01-17 | 2020-11-03 | Caterpillar Inc. | Grill |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2318189A (en) * | 1941-05-24 | 1943-05-04 | Berman Morris | Vehicle radiator shield |
US3816981A (en) * | 1971-05-24 | 1974-06-18 | Clayson Nv | Rotary air filter |
DE3447195A1 (de) * | 1984-12-22 | 1986-07-03 | M A N Nutzfahrzeuge GmbH, 8000 München | Kuehlvorrichtung mit axialluefter in kapselbauweise |
US5180003A (en) | 1992-01-14 | 1993-01-19 | Caterpillar Inc. | Dual fan cooling system |
JP2004183500A (ja) * | 2002-11-29 | 2004-07-02 | Komatsu Ltd | 軸流ファン冷却装置 |
DE102004029283A1 (de) * | 2004-06-17 | 2006-01-05 | Daimlerchrysler Ag | Kühllufteinlass von Kraftfahrzeugkarosserien |
-
2012
- 2012-01-31 US US13/362,580 patent/US20130192795A1/en not_active Abandoned
-
2013
- 2013-01-28 EP EP13703261.1A patent/EP2809538A2/de not_active Withdrawn
- 2013-01-28 WO PCT/US2013/023355 patent/WO2013116124A2/en active Application Filing
- 2013-01-28 CN CN201380006452.4A patent/CN104245383B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013116124A2 * |
Also Published As
Publication number | Publication date |
---|---|
US20130192795A1 (en) | 2013-08-01 |
CN104245383A (zh) | 2014-12-24 |
CN104245383B (zh) | 2017-05-24 |
WO2013116124A2 (en) | 2013-08-08 |
WO2013116124A3 (en) | 2013-10-10 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20140716 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BLUNIER, BRIAN, V. Inventor name: GADHIRAJU, SURYANARAYANA, R. Inventor name: WANG, FEI Inventor name: LOOPER, RYAN, D. |
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DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20160620 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20160802 |