• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a cooling device for cooling a medium in a vehicle (1). The cooler device comprises a cooler (21) comprising a plurality of tubular elements (2 1c) which pass the medium through the cooler (21), heat transfer elements (21d) arranged in gap-shaped spaces between adjacent tubular elements (Zlc) so. that they divide the gap-shaped space between two adjacent tubular elements in air ducts (21h) which have a distance between inlet openings (21111) which are located in a substantially common plane (28a) on a front side (21a) of the radiator and outlet openings (2 lhg) which are a rear side (21b) of the radiator and a fastening device (30) for mounting the radiator (21) to a side surface (1b, 1c) of the hosed vehicle (1). Said air ducts (21h) form an angle (a) towards the plane (28a) so that ambient air flowing along the front of the radiator (21a) can be led into the air ducts (21h) with an angular change of less than 90 ". (rig. 4)
    公开号:SE1151241A1
    申请号:SE1151241
    申请日:2011-12-21
    公开日:2013-06-22
    发明作者:Thomas Haellqvist；Zoltan Kardos
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    15 20 25 30 35 In the future, vehicles will probably be equipped with WHR (Waste Heat Recovery System) to convert waste heat in the vehicle to mechanical energy for operation of the vehicle. The waste heat can be taken from various heat sources in the vehicle such as, for example, the exhaust gases of the internal combustion engine. In a WHR system, a circulating medium in an evaporator is evaporated by the hot exhaust gases. The evaporated medium is led to a turbine where mechanical or electrical energy is extracted as the medium expands through the turbine. The agent is then led to a condenser where it condenses before it can be used again to absorb heat from the exhaust gases in the evaporator. For a WHR system to work efficiently, the medium must be cooled efficiently in the condenser.
    SUMMARY OF THE INVENTION The object of the present invention is to provide a radiator device with a radiator having a design so that it can be mounted on a side surface of a vehicle and that it where it can obtain a good flow of ambient air without the need for energy consuming such.
    This object is achieved with the arrangement of the kind mentioned in the introduction, which is characterized by the features stated in the core-drawing part of claim 1. The cooler according to the invention thus comprises heat-transferring elements which are arranged in gaps between adjacent pipe elements. The primary task of the heat transfer elements is to constitute extra contact surfaces between the air and the pipe elements in order to make the cooling of the medium in the pipe elements more efficient. If a conventional radiator is arranged on a side surface of a vehicle, the conventional heat transfer elements create air ducts in a transverse direction in the vehicle. In this case, large flow losses and a very small air leakage through the radiator are obtained. In order to reduce the flow losses and thereby obtain a larger air flow through the radiator, the heat transfer elements, according to the present invention, form air ducts which form an angle towards the front of the radiator so that the ambient air can be led into the air ducts with an angular change of less than 90 °. By giving the air ducts a suitable angle in relation to the direction of flow of the air, flow losses in the air ducts can be kept at a relatively low level, which results in a good flow of air through the cooler. In this case, the product can get a good air flow through the radiator without the use of energy-intensive fl spouts. According to a preferred embodiment of the invention, said air ducts form an angle to the plane in the range 30 ° ~ 60 °. When the air ducts have an angle within this angular tube area towards the flow direction of the air, a relatively small pressure drop is obtained when the air is led through the air ducts. Because the air ducts extend at an angle through the radiator, the air duct becomes longer than when they extend straight through the radiator. The contact surface of the air with the heat transfer elements and the moving element thus becomes larger, which improves the air's cooling of the medium. The heat transfer elements can form substantially straight air ducts through the radiator. However, it is possible to give the walls of the heat transfer elements a slightly curved shape in order to further reduce the air flow losses through the air ducts.
    According to another preferred embodiment of the invention, the cooling device comprises a fate element which is adapted to direct air towards the cooler. Such a flow element can be part of the vehicle's chassis, side skirt or part of the radiator. By arranging such a destructive element at a suitable angle in relation to the direction of scattering of the air and the front of the radiator, the air can be effectively led towards the front of the radiator during operation of the vehicle. The flow element advantageously creates a gradually decreasing flow area for the air adjacent to the radiator. Thus, an overpressure can also be created in an area outside the front of the radiator, which further favors the air flow through the radiator. The cooling device may comprise a fate-regulating element with which the air flow through the cooler can be regulated. Such a fate-regulating element may be a shutter or the like arranged at the front of the radiator. During certain operating times when the cooling demand is low and / or when ambient air has a very low temperature, it may be appropriate to reduce or stop the air flow through the cooler.
    According to another preferred embodiment of the invention, the radiator device comprises a flow passage for air on the back of the radiator. The air that has passed through the radiator is advantageously led away in a passage adjacent to the back of the radiator. The air flowing in such a passage along the back of the radiator creates a reduced static pressure in connection with the outlet openings of the air ducts. The reduced pressure at the air duct outlet openings also affects the air flow through the radiator in a positive way. Such a current passage can be created at the back of the radiator by means of an underlying wall surface. Such a wall surface may, for example, belong to an existing component in the vehicle such as a fuel tank. According to another preferred embodiment of the invention, the heat transfer elements are formed of elongate elements with curved portions which are alternately in contact with two adjacent pipe elements. Such heat transfer elements may be pleated and thus have a V-shape, u-shape or the like. Unlike conventional heat transfer elements, the heat transfer elements according to the invention have walls which have an angle with respect to a transverse direction through the radiator. The heat transfer elements thus define air ducts which extend obliquely through the radiator where the inlet openings of the air ducts at the front of the radiator are arranged in a different manner relative to the openings of the outlet ducts at the rear of the radiator. The heat transfer elements are made of a material with good heat conducting properties such as, for example, aluminum.
    According to another preferred embodiment, the fastening device comprises a frame construction which is adapted to support at least two edge surfaces of the radiator. In order that the fastening device does not affect the air flow through the radiator, it is suitable to arrange the radiator in a frame construction which supports the edge portions of the radiator where there are no air ducts. The frame construction advantageously comprises an upper frame portion which receives an upper edge portion of the radiator and a lower frame portion which receives a lower edge portion of the radiator. In this case, the radiator can be pushed into the space between the frame portions with a displacement movement. The frame structure may comprise a base portion supporting the upper frame portion and the lower frame portion. The base portion can form a side portion of the frame structure. The base portion advantageously comprises an inlet for receiving the medium to be cooled in the cooler and an outlet for receiving the medium from the cooler after cooling. The base part is advantageously rotatably arranged in the vehicle. The hose construction can thus be pivoted out from a mounting position which it assumes during operation of the vehicle to a service position which it assumes when the radiator is to undergo cleaning or other type of service. In the flared service position, the radiator can be disassembled from the frame structure by being pulled out of the space between the upper frame portion and the lower frame portion.
    According to another preferred embodiment, the cooling device is adapted to cool coolant circulating in a cooling system where it cools the medium in a VVHR system.
    WHR systems require efficient cooling in order to be able to convert heat energy into energy for the operation of a vehicle in an efficient manner. For a WHR system to be efficient, energy-intensive radiators should not be used to force air through the radiator. Coolers for the WHR sister should therefore be relatively large. For heavy vehicles, there is usually room to apply relatively large radiators to the sides of the vehicle. Thus, it is very convenient to use a cooling device according to the present invention to directly or indirectly cool the medium in a WHR system. However, it is possible to use the cooling device in essentially all types of cooling systems with a circulating coolant for cooling different media in a vehicle. The cooling device can also be used for direct cooling of various media that need to be cooled in a vehicle.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, by way of example, a preferred embodiment of the invention is described with reference to the accompanying drawings, in which: Fig. 1 shows a cooling system in a vehicle where the coolant is cooled in cooling devices according to the present invention, Fig. 2 shows a view from above of one of the cooling devices in Fig. 1, Fig. 3 shows the cooling device in more detail and Fig. 4 shows a sectional view in the plane AA of the cooling device.
    DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION Fig. 1 schematically shows a vehicle 1 which may be a heavy vehicle 1. The vehicle is driven by a dry combustion engine 2 which may be a diesel engine. The internal combustion engine 2 is cooled by a first cooling system with a circulating coolant. A coolant purp 3 circulates the coolant in the first cooling system. The coolant is led from the coolant pump 3 to the internal combustion engine 2. After the coolant has cooled the internal combustion engine 2, it is led in a line 4 to a thermostat 5. If the coolant has not reached its operating temperature, the thermostat 5 returns the coolant to the coolant pump 2 via a line 6. If the coolant has reached operating temperature, substantially all of the coolant, via a line 7, is led to a cooler 8 for cooling. The radiator 8- is located at a front part 1a of the vehicle where it is cooled by ambient air. Once the coolant has cooled in the radiator 8, it is led back to the coolant pump 3 via a line 9.
    The vehicle is equipped with a second cooling system with a circulating coolant. The second cooling system is a low temperature cooling system where the coolant during operation of the internal combustion engine 2 has substantially always a lower temperature than the coolant in the first cooling system. A coolant purge 10 circulates the coolant in the second cooling system. The second cooling system has a first cooler 11 which is mounted, at the fi part of the vehicle, för in front of cooler 8 in the first cooling system. A radiator fan 12 generates an air stream of ambient air through the radiators 8, 11 during operation of the internal combustion engine 2. Since the first radiator 11 is located in front of the radiator 8 at the front surface 1a of the vehicle 1a, the coolant in the first radiator 11 is cooled by ambient temperature. the second cooling system is cooled by air at a higher temperature. After the coolant has cooled in the first cooler 11, it is led by the coolant pump 11, via a line 12, to a number of heat exchangers. The line 12 is here divided into three parallel lines 13a, 131), 130. The first parallel line 13a comprises an AC condenser 14 for cooling the refrigerant in an AC plant. The second parallel line 13b comprises a charge air cooler 15 for cooling charge air, an EGR cooler 16 for cooling recirculating exhaust gases and an oil cooler 17 for cooling gearbox oil. The third parallel line 13c comprises a WHR condenser 18 for cooling a circulating medium in a WHR system in the vehicle. The circulating medium in the WI-1R system may be water.
    The WI-IR system comprises an evaporator (not shown) where the medium is evaporated by heat from a heat source in the vehicle which may be the exhaust gases of the internal combustion engine and a turbine driven by the steam. As the steam expands through the turbine, part of the steam's heat energy is converted into mechanical energy. A power transmission system transmits the movements of the turbine to an output shaft of the combustion engine and / or to a generator which generates electrical energy. The WHR system is used to utilize waste heat in the vehicle and convert it into mechanical energy for »operation of the vehicle 1. Thus, the fuel consumption of the pre-combustion engine 2 can be reduced.
    After the coolant in the second cooling system cools the media in the heat exchangers 14-18, the parallel lines 13a, 13b, 13c merge into a common line 19. The common line 19 is divided into two parallel lines 20a, 20b. The first parallel line 20a comprises a second cooler 21 in the second cooling system. The second radiator 21 is arranged on the left side 1b of the vehicle where it is cooled by ambient air. The second parallel line 20b comprises a third cooler 22 in the second cooling system. The third radiator 22 is arranged on the right side 1c of the vehicle where it is cooled by ambient air. Preferably, about half of the coolant in the second cooling system is passed through the second cooler 21 and the other half of the coolant through the third cooler 22. After the coolant has cooled in the coolers 21, 22, the parallel lines 20a, 20b pass the joint in a common line 23 which leads the coolant to the first radiator 11 at the front part 1a of the vehicle. The coolant in the second cooling system is thus flushed in this case in two steps.
    Fig. 2 shows a view from above of the second cooler 21 in the second cooling system which is arranged on the left side 1b of the vehicle 1. The second cooler 21 is arranged outside a fuel tank 24 in the vicinity of a container 25 which contains a battery.
    The left rear wheels 26 of the vehicle are arranged behind the fuel tarpaulin 24. The container 25 for the battery and the fuel tarpaulins 24 are attached to a longitudinal side beam 27 of the vehicle 1.
    The second radiator 21 is relatively flat with a constant width. The radiator 21 has a substantially flat front side 21a which is arranged in a plane 28a. The cooler 21 has a substantially flat back 21b which is arranged in a plane 28b. The radiator has a uniform width so the planes 28a, 281) are parallel. When the radiator 21 is in a mounted position in the vehicle, the planes 28a, 28b are also parallel to a longitudinal axis 29 of the vehicle.
    The radiator 21 is attached to the vehicle 1 by means of a rotatable fastening device 30 so that the radiator 21 can be pivoted out from the mounting position to a service position shown in broken lines in Fig. 2. This can be done when the vehicle 1 is stationary and the radiator 21 is to be serviced. , cleaned or replaced.
    Fig. 3 shows the second cooler 21 and the fastening device 30 in more detail. The second radiator 21 has a constant height and a constant length. The cooler 21 thus has a rectangular shape. The frame structure 30 includes a base portion 30a, an upper frame portion 30b and a lower frame portion 30c. The upper frame portion 30b has a mold so that it can receive the upper edge portion of the second radiator 21. The lower frame portion 30c has a shape so that it can receive the lower edge portion of the second radiator 21. The upper frame portion 30a and the lower frame portion 30b are arranged in parallel at a distance from each other so that the second cooler 21 can be slid into the intermediate tube between the upper frame portion 30b and the lower frame portion 30c. The upper frame portion 30b has downwardly angled edge portions and the lower frame portion 300 has upwardly angled edge portions which ensure that the radiator 21 is retained in the frame construction 30 in an assembled condition.
    The second cooler 21 comprises a plurality of elongate tubular elements 21c arranged in parallel which guide coolant through the radiator 21. The elongate tubular elements 21c are arranged at a gap-shaped distance from each other. The cooler 21 comprises two end portions 21e which comprise connections between at least two adjacent pipe elements 21c so that the medium can be led between two adjacent pipe elements 21c via the end portions 21e. In the gap-shaped spaces between adjacent pipe elements 21 heat transfer elements 21d are arranged. The heat transfer elements 21d are elongate and pleated so as to have alternating upper portions in contact with an upper tube member 210 and lower portions in contact with a lower tube member 21c in the slit-shaped spaces. The heat transfer members 21d may be referred to as v-shaped or u-shaped. A primary purpose of the heat transfer elements 21d is to improve the heat transfer between the air flowing through the slit-shaped cavities and the coolant inside the tube elements 21c. The heat transfer elements 21d are made of a material with good heat conducting properties.
    The base portion 30a of the frame structure 30 is provided at an upper end with an inlet pipe 3Ûd for connection of a coolant line 20a. The inlet pipe 30d is rotatably mounted in a portion of the vehicle 1. The base portion 30a includes an internal connection between the inlet pipe 30d and an inlet opening 30e for guiding coolant to the second radiator 21. The second radiator 21 comprises an inlet pipe 21f which is adapted to be connected to the inlet. 30e. The inlet pipe 21f may be provided with an o-ring or the like to enable a tight connection with the base portion 30a. The coolant received in the cooler 21 is led through the parallel pipe elements 21c and out of the cooler via an outlet pipe 21 g which is connectable to an outlet opening 30f of the base portion 30a for receiving coolant. The outlet pipe 21 g is advantageously also provided with an o-ring or the like in order to guarantee a tight connection with the base portion 30a. The base portion 30a, at a lower part, is provided with an outlet pipe 30e for connection of a coolant line 20a. The outlet pipe 30e is rotatably mounted in a portion of the vehicle 1. The inlet pipe 30d and the outlet pipe 30e of the base portion 30a are rotatably mounted about a common axis of rotation 31. It is thus possible to rotate the pipe structure 30 and the radiator 21 as a unit to the pivoted position Fig. 2. The casing structure 30 has a locking mechanism (not shown) or the like which must be released in order for the casing structure 30 and the second cooler to be pivotable out of the mounting position to the service position.
    A flow element 32 is arranged in a position outside the radiator 21.
    The flow element 32 has an upstream end which forms an opening 32a for receiving air during operation of the vehicle and a downstream end which substantially abuts the radiator 21. The flow element 32 forms an angle with the air which is led in through the opening so that it is directed towards the front side 21 of the radiator. a. The flow element 32 may be constituted by a part of a body, side skirt or the like of the vehicle. The flow element 32 may alternatively be part of the cooler 21. A schematically indicated air-regulating element 33 in the form of a shutter or the like is arranged in front of the front side 21a of the radiator. With the aid of the air regulating element 33, the air flow through the cooler 21 can be reduced or completely stopped if desired.
    The heat transfer elements 21d form in the slit-shaped cavities a plurality of parallel air ducts 2lh extending from inlet openings 21h1 on the front side 21a of the radiator to outlet openings 2lh; on the back of the radiator 21b. The air ducts 21l have a stretch which advantageously forms an angle 21i of 30 "to 60 ° in relation to the longitudinal axis 29 of the vehicle and the plane 28a through the front side 21a of the radiator.
    The air ducts 21h in this case have a substantially straight line through the second cooler 21. By means of the angled air ducts 21h, the air provides relatively moderate changes of direction in order to be able to be led into the air ducts. As a result, the air flow losses through the cooler 21 become relatively small. The air flow through the radiator 21 is thereby favored and the cooling of the coolant in the tubular elements 21a. The air passed through the air ducts 2lh is received in an air passage 34 at the rear of the radiator 21. The air passage 34 is defined by the radiator rear 21b and a wall surface of the fuel tank 24. The air in the air passage 34 flowing backwards in the vehicle along the rear side 21b of the radiator lowers the static pressure in connection with the outlet openings 2lh of the air ducts; which also favors the air flow through the radiator 21. The third radiator 22 has a corresponding design as the second radiator 21. It is also arranged in a corresponding frame construction 30 on the right-hand side 1c of the vehicle.
    During operation of the vehicle 1, the cold coolant in the second cooling system cools the media in the heat exchangers 14-18. After the coolant has passed through the heat exchangers 14-18, it obtains an elevated temperature. The coolant now led either via line 20a to the second radiator 21 on the left side of the vehicle or to the third radiator 22 on the left side 1c of the vehicle. The coolant is cooled in the second cooler 21 by air flowing through the angled air ducts 2lh in the cooler. The coolant here receives an efficient cooling as it is cooled by air with the ambient temperature. The coolant which is led to the third radiator 22 receives a corresponding cooling at the right side 1c of the vehicle. The coolant which has now been cooled in a first step thus has a relatively low temperature when it reaches the first cooler 11 at the front part 1a of the vehicle. The coolant is cooled here in a second stage of air with the ambient temperature. The coolant which leaves the first cooler 11 and when the heat exchangers 14-18 thus have a temperature which substantially corresponds to the ambient temperature.
    The side surfaces of the vehicle 1 are thus used in this case for mounting air-cooled coolers 21, 22. The coolers 21, 22 can be made relatively large here. By means of the fate element 32, the air flowing along the side surface of the vehicle can be led towards the radiator 21. The flow element 32 also creates an overpressure in connection with the inlet openings 24h1 of the air ducts on the front side 21a of the radiator which directs the air through the air passages 21h. Since the air ducts 21h have a relatively favorable angle 21i with the flow direction of the air, the air flow resistance through the air duct 21h becomes relatively small, which also favors a large air flow through the coolers 21, 22. Finally, the fate passage 34 on the back of the cooler applies a negative pressure at the radiator outlet. also benefits the air fl through the radiator 21. WHR systems require a large cooling capacity to convert heat energy into mechanical energy in an efficient manner. In this case, the VJHR system can provide a good cooling of the second cooling system which thus comprises coolers 21, 22 at the side surfaces 1b, 1c of the vehicle. The llVllR system in this case has favorable conditions for supplying energy for operation of the vehicle.
    The invention is in no way limited to the embodiment described in the drawing but can be varied freely within the scope of the claims.
    权利要求:
    Claims (9)
    [1]
    A cooling device for cooling a medium in a vehicle (1), the cooling device comprising a cooler (21) comprising a plurality of tubular elements (21c) which guide the medium through the cooler (21), heat transfer elements (2ld) which are arranged in slit-shaped spaces between adjacent tubular elements (21c) so as to divide the slit-shaped space between two adjacent tubular elements into air ducts (21h) which have a distance between inlet openings (21h1) which are located in a substantially common plane (28a) on a front side ( 21a) of the radiator and outlet openings (21h2) located on a rear side (21b) of the radiator (21) and a fastening device (30) for mounting the radiator (21) to a side surface (1b, 1c) of the vehicle (1) , characterized in that said air ducts (21h) form an angle (21i) which is less than 90 ° to the plane (28a) so that ambient air flowing along the front side (21a) of the cooler can be led into the air ducts (21i) with an angular change which is less than 90 °, the cooling device gen comprises a fl passage passage (34) for air on the rear of the radiator (2lb) where the air flows along the rear of the radiator 21b during operation of the vehicle (1).
    [2]
    Cooler device according to claim 1, characterized in that said air ducts (21h) form an angle (21i) towards the plane (28a) in the range 30 ° - 60 °.
    [3]
    Radiator device according to claim 1, characterized in that the heat transfer elements (2ld) form substantially straight air ducts (21h) through the radiator (21).
    [4]
    Radiator device according to one of the preceding claims, characterized in that the radiator device comprises a fate element (32) which is adapted to direct air towards the front (21a) of the radiator during operation of the vehicle (1).
    [5]
    Cooler device according to one of the preceding claims, characterized in that the cooling device comprises a regler fate-regulating element (33) with which air fl the fate through the cooler (21) can be regulated.
    [6]
    Cooler device according to one of the preceding claims, characterized in that the friend transfer elements (2ld) are formed by elongate elements with curved portions which alternate as if in contact with two adjacent pipe elements (21c). 10 15
    [7]
    Radiator device according to one of the preceding claims, characterized in that the fastening device (30) comprises a frame construction (30a, 30b, 30c) which is adapted to receive at least two edge portions of the radiator (21).
    [8]
    Radiator device according to one of the preceding claims, characterized in that the fastening device (30) is fixed in the vehicle (1) so that it can be pivoted about an axis of rotation (31) between a mounting position and a service position.
    [9]
    Cooler device according to one of the preceding claims, characterized in that the cooler device is adapted to cool a medium in the form of a coolant circulating in a cooling system.
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    同族专利:
    公开号 | 公开日
    BR102012032533A2|2014-05-13|
    SE537026C2|2014-12-09|
    EP2607131B1|2014-08-06|
    EP2607131A1|2013-06-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB517096A|1938-08-19|1940-01-19|James Frank Belaieff|Improvements in or relating to the disposition of radiators or like heat exchangers|
    DE3930076C1|1989-09-09|1991-02-14|Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De|
    DE20016748U1|2000-09-28|2000-11-30|Abbrecher Siegfried|Variable aerodynamic cooling system|
    DE102004005592B4|2004-02-04|2008-09-04|Adam Opel Ag|Radiator arrangement for a motor vehicle|
    DE102005021413A1|2005-05-10|2006-05-04|Daimlerchrysler Ag|Vehicle e.g. van, has fuel cell system for generating electrical power and including cooling system with cooling heat exchanger, where ambient air that circulates around exchanger flows from inlet opening to exchanger via flow channels|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1151241A|SE537026C2|2011-12-21|2011-12-21|Cooling device for cooling a medium in a vehicle|SE1151241A| SE537026C2|2011-12-21|2011-12-21|Cooling device for cooling a medium in a vehicle|
    EP20120193936| EP2607131B1|2011-12-21|2012-11-23|Radiator device for cooling a medium in a vehicle|
    BR102012032533A| BR102012032533A2|2011-12-21|2012-12-19|RADIATOR DEVICE TO COOL A MEDIA IN A VEHICLE|
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