• 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 heat exchanger comprising a container (3) comprising an inlet portion (3a), an intermediate portion (3b) enclosing a heat exchanger unit (5) and an outlet portion (30) where the first medium is discharged from the friend exchange unit (5). The friend exchange unit (5) has an outer peripheral surface which in at least two areas is located at a distance from an inner surface of the container (3) so that at least two bypass channels (6a-d) are formed for the first medium next to the heat exchanger unit (5). ). The heat exchanger comprises at least fl fate elements (7a-d) which are adapted to regulate the flow of the first medium through the bypass channels (6a-d). Each said flow element (7a-d) has a first end portion which is hingedly connected to the heat exchanger unit (5) and a second free end portion which is located at a distance from the heat exchanger unit (5). (Fig. 3)
    公开号:SE1251466A1
    申请号:SE1251466
    申请日:2012-12-20
    公开日:2014-06-21
    发明作者:Zoltan Kardos；Thomas Hällqvist
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    '35 medium in the pipe loop. In the closed position of the damper, the exhaust gases are led through radially outwards to the peripheral channel extending around the inner cylindrical body. In the closed position of the damper, the exhaust gases receive relatively large flow losses.
    SUMMARY OF THE INVENTION The object of the present invention is to provide a heat exchanger having a compact construction, a good controllability and low flow losses.
    These objects are achieved with the heat exchanger of the kind mentioned in the introduction, which is characterized by the features stated in the characterizing part of claim 1. The heat exchanger thus comprises a container with a preferably centrally arranged heat exchanger unit and a number of separate bypass channels which are arranged around the periphery of the heat exchanger unit. Since the bypass ducts are arranged inside the container, they form an integral part of the heat exchanger. Such a heat exchanger can be given relatively small external dimensions and no separate bulky bypass line needs to be used to guide the medium around the heat exchanger unit. In this case, the flow through each of the bypass channels is regulated by means of a respective fl fate element. Each of the flow elements is articulated to the Association with the friend exchanger at a first spirit section. The flow elements have a second free end portion which is adjustable in different positions when the flow element is rotated in relation to the heat exchanger unit. With such fate elements, a simple and reliable control of the fate is obtained through the respective bypass channels. The friend changer has at least two bypass channels and thus at least two such solder elements.
    However, the heat exchanger advantageously has at least three bypass channels and thus at least three such fl fate elements. The end portions of the flow elements are advantageously arranged so that the flow element forms a relatively small angle to the exhaust gas flow which flows into the heat exchanger both when the exhaust gas is to be passed through the heat exchanger unit and through the bypass channels. The flow channels advantageously have an angle of at least 60 °. ° and preferably not 45 °.
    Thus, the flow losses in the heat exchanger can be kept at a very low level.
    According to an embodiment of the present invention, the fate elements are rotatably arranged between a first end position in which they block their respective bypass channels so that the entire first medium fate is passed through the heat exchanger unit and in a second end position in which they together block the flow through the heat exchanger unit. media fl fate is passed through the bypass channels. The flow elements are thus arranged in such a way that they substantially individually regulate the flow through the individual bypass channels at the same time as they can in cooperation block the media flow through the heat exchanger unit. The flow elements are advantageously adapted to abut with their free end portions against an inner surface in the inlet portion or in the outlet portion when they are in the first end position.
    Thus, the medium can be led substantially straight forward and into the centrally arranged friend-changer unit without substantially changing direction and out of the heat exchanger unit without substantially changing direction. The flow elements are advantageously adapted to abut with their free end portions against each other in the other end position. The flow elements advantageously have a triangular shape with a wide base portion which is hingedly attached to the heat exchanger unit and a free end portion which has a pointed front. Such flow elements can in the second position form a substantially conical body where the free end portions form the tip of the cone.
    Such a conical body can completely block the inlet of the heat exchanger unit while at the same time relatively gently deflecting the medium solder radially outwards to the bypass channels.
    According to an embodiment of the present invention, said fate elements are positionable in a plurality of intermediate positions between the first position and the second position in which they direct a part of the first media flow through the heat exchanger unit and a remaining part of the medium fl through the bypass channels with a distribution that varies with the distance of the intermediate position to the respective end positions. The flow elements can be Adjustable to a certain number of fixed intermediate positions. However, they are advantageously infinitely adjustable in any intermediate positions between the first position and the second position. In this case, good possibilities are obtained for distributing the media fate through the heat exchanger unit and the bypass channels with optimum precision.
    According to an embodiment of the present invention, the destructive elements are at least partially arranged in the inlet portion and / or in the outlet portion of the container. In order to obtain an optimally structured medium fate, it is suitable to arrange a first set of flow elements in the inlet portion and a second set of solder elements in the outlet portion.
    In this case, a control of the media flow is obtained both at the inlet and outlet of the heat exchanger unit. It is possible to arrange flow elements only in the inlet portion or in the outlet portion in order to obtain a desired distribution of the flow between the heat exchanger unit and the bypass channels. However, at this end of the heat exchanger unit which lacks fl destructive elements, increased flow losses are obtained in this case.
    According to an embodiment of the present invention, the container has an inner surface having eight sides and eight corners in a transverse plane and a heat exchanger unit having an outer surface having four sides and four corners in said transverse plane, the four corners of the heat exchanger unit being fixed in every other corner of the container. With such a design of the container and the heat exchanger unit, a bypass channel is created radially outside each of the four sides of the heat exchanger unit. The attachment of the corner of the heat exchanger unit to the corner of the container results in a torsionally fixed attachment of the heat exchanger unit inside the container. The heat exchanger unit and the container can of course have other geometric cross-sections which result in the formation of separate bypass channels radially outside the sides of the heat exchanger unit. The friend changer unit can, for example, have a triangular cross-section and the container a hexagonal cross-section.
    According to an embodiment of the present invention, the friend changer comprises a positioning mechanism which is adapted to regulate the position of all flow elements in a synchronous manner so that they are simultaneously set in corresponding positions. In order for a structured and symmetrical media flow to be obtained through the heat exchanger unit, it is suitable that all flow elements are regulated simultaneously and in a corresponding manner. In addition, the number of included drive means can be reduced with such a solution. Each of the flow elements advantageously comprises a shaft which is rotatably attached to the friend exchange unit and that the shafts of adjacent flow elements are rotatably connected to each other. The shaft can consist of an elongate continuous shaft or consist of two coaxially arranged separate parts. The shafts of adjacent flow elements can be rotatably connected to each other by means of conical gears. The axes of the adjacent flow elements form an angle in relation to each other. With the aid of bevel gears, rotational movements can be transmitted between the two axes which are angled relative to each other. The rotational movement between two such shafts can also be transmitted by means of other types of components such as, for example, bendable pipe-shaped members which are loaded on the ends of the respective connecting shafts so that they are connected to each other.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, as an example, preferred embodiments of the invention are described with reference to the accompanying drawings, in which: Fig. 1 shows a heat exchanger according to the present invention, Figs. Fig. 2 shows a cross section through the heat exchanger in the plane AA in Fig. 1, Fig. 2 shows a longitudinal cross section of the heat exchanger in the plane BB in Fig. 2 in an operational case when all air is led through the heat exchanger unit, Fig. 4 shows a cross section of heat exchanger in the plane CC in Fig. 3, Fig. 5 shows a longitudinal cross-section of the heat exchanger in the plane BB in Fig. 2 in an operating case when a part of the air is led through the heat exchanger unit and a part of the air through the bypass ducts.
    Fig. 6 shows a cross section through friend exchangers in the plane C-C in Fig. 5, Figs. Fig. 7 shows a longitudinal cross-section of the heat exchanger in the plane B-B in Fig. 2 at an operating standstill when all air is led through the bypass ducts.
    Fig. 8 shows a cross section through heat exchanger in the plane C-C in Pig. 7 and Pig. 9 shows a positioning mechanism according to an alternative embodiment.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION Fig. 1 shows a heat exchanger. The heat exchanger is exemplified here as a charge air cooler 1 in a vehicle driven by an overcharged internal combustion engine. A first medium in the form of charge air is cooled in the charge air cooler I. The charge air cooler 1 is arranged in an air line 2 which leads charge air to the internal combustion engine. The charge cooler 1 comprises a container 3 which forms an outer surface of the charge air cooler 1. The container 3 consists of an inlet portion 3a, an intermediate portion. 3b and an outlet portion 30. The inlet portion 3a has a successively increasing cross-sectional area a longitudinal distance from a connection with an upstream arranged part of the air duct 2 to the intermediate portion 3b.
    The intermediate lot has a cash cross-sectional area. The outlet portion 30 has a successively decreasing cross-sectional area in a longitudinal direction from the intermediate portion 3b to. a connection with a downstream part of the overhead line 2. A second medium in the form of a coolant is circulated through the intermediate portion Bb. The coolant is led in to the adjacent portion 3b via an inlet 4a and out via an outlet 4b.
    Fig. 2 shows a cross section in the plane A-A in Fig. 1 through the intermediate portion 3b of the container. It can be seen here that the intermediate portion 3b comprises a wall with a substantially constant thickness. The intermediate portion 3b has a cross section in the form of an octahedron. The intermediate portion Bb thus has a cross section with eight straight sides and eight corners. The inlet portion 3a and the outlet portion 3c also comprise a wall with a corresponding eight-sided cross-sectional shape. The intermediate portion 3b encloses a heat exchanger unit S. The friend exchanger unit S has a square cross-sectional shape defined by an upper side Sa, a lower side Sh, a left side Sc and a right side Sd. The heat exchanger unit 5 has four straight sides Sa-d and four corners. The four corners of the heat exchanger unit 5 are attached to every other corner of the intermediate portion Sh. Thereby four separate areas are obtained where there is a distance between the sides 5a-d of the heat exchanger unit and the sides of the intermediate part 3b. As a result, four bypass channels óa-d are created radially outside the sides Sa-d of the heat exchanger unit. The heat exchanger unit 5 in this case consists of longitudinal ducts of two kinds, namely air ducts which conduct charge air between the end surfaces of the heat exchanger unit 5 and coolant ducts which guide coolant in an opposite direction between the end surfaces of the heat exchanger. Said ducts are arranged alternately in the heat exchanger unit 5 so that a large heat transfer surface is obtained between the charge air and the coolant in the heat exchanger unit 5. The heat exchanger unit 5 is in this case a countercurrent heat exchanger unit but it can of course also be designed as a co-heat exchanger.
    Pig. Fig. 3 shows a longitudinal section through the charge air cooler 1 in the plane B-B in Fig. 2. It can be seen here that the heat exchanger unit 5 in connection with the inlet portion 3a and the outlet portion 3c is provided with flat-shaped flow elements 7a-d. The function of the flow elements' 1a-d is to control the flow of charge air through the charge air cooler 1. Each of the flow elements 7a-d is provided with a shaft Sa-d which is rotatably mounted in the heat exchanger unit. A first set of fate elements Ta-d are arranged in the inlet portion 3a and attached to an inlet of the heat exchanger unit 5. A second set of fate elements 7a-d are arranged in the inlet portion 3c and fixed at an outlet of the heat exchanger unit 5. The flow element 7a-d has an identical design and has therefore been provided with the same reference numerals on both sides of the heat exchanger unit 5. The flow elements 7a-d comprise on each side of the heat exchanger unit 5 four fl fate elements in the form of an upper fi fate element 7a Sa which is attached to the upper side Sa of the heat exchanger unit 5 and a lower flow element '1b with a shaft 8b is attached to the lower side 5b of the heat exchanger unit 5, a right fl fate element' Fc with a shaft Se which is attached to the right the side of the heat exchanger unit 5 and a left flow element id with a shaft Sd which is attached to the left side Sd of the heat exchanger unit. However, the right and left solder elements 7c, 7d and the shafts Se, Sd and are not visible in Fig. 3. The shafts Sa-d have end portions which are connected to connecting elements which cause the shafts Ba-d to rotate synchronously with each other.
    A housing 9 is arranged over an opening in the inlet portion 3a and a corresponding housing 9 is arranged over an opening in the outlet portion 3c. Each of the housings 9 encloses a positioning mechanism for positioning the fate elements 7a-d in desired positions. The positioning mechanism comprises a control unit 14 which controls the activation of a respective drive means 13 arranged in connection with the housings 9. Each of the drive means 13 is connected to a curved rack 11 via a gear 10. Each of the racks 11 is at one end connected to one of the soldering elements which in this case is the upper soldering element 7a. Each of the racks 11 extends from the upper flow element 7a, via said opening in the container 3, into the housing 9 where it is in contact with the gear 10. By activating the drive means 13 which may be electric motors or pneumatic cylinders, gears 10 to rotate. As the gears 10 rotate, they displace the racks 11 so that the upper fl fate elements fla with shafts 8 are rotated relative to the heat exchanger unit 5. Since the shafts 8a-d are rotationally connected to each other, all the fl element elements 7a-d receive a simultaneous and corresponding rotation. desired positions.
    The river elements 7a-d can be set in a first end position in which they block their respective bypass channels 6a-d. In this case, the entire flow of charge air is conducted through the friend exchange unit 5. The free ends of the flow element 7a-d in this case abut against an inner surface in the inlet portion 3a and in the outlet portion 3c. Pig. 3 and 4 show the fate element 7a-d in this first end position. The flow elements 7a-d can be set in a second end position in which they abut with their free end portions against each other in a central position in the inlet portion 3a and the outlet portion 3c, respectively. The flow element 7a-d here blocks the flow of charge air to the friend exchange unit 5. The flow elements' ia-d expose bypass channels 6a-d so that the entire charge air fl is passed through the bypass channels 6a-d. Figs. 7 and 8 show the fate element 1a-d in this second end position. The flow elements 7a-d can be set steplessly in an arbitrary intermediate position between said end positions. In this fail, a part of the charge air sound is led through the friend exchange unit 5 and a remaining part of the charge air flow through the bypass ducts 6a-d. Figs. 5 and 6 show the flow elements 7a-d in such an intermediate position.
    During operation of the vehicle, the control unit 14 receives information indicating how much of the charge liquor flow is to be cooled. The control unit 14 may receive information from, for example, a temperature sensor which senses the temperature of an exhaust gas purifying component, such as an SCR catalyst, in an exhaust line which discharges exhaust gases from the internal combustion engine. The temperature of the exhaust gases is related to the cooling of the charge air. As long as the temperature in an SCR catalyst is below a certain temperature, the SCR catalyst cannot be activated. When this is the case, the control unit places the flow elements in the second position so that the entire charging air fl flows through the bypass ducts 6a-d. Thus, the charge air does not receive cooling, which results in a higher exhaust gas temperature and a faster heating of the SCR catalyst so that it can be activated and clean the exhaust gases relatively soon after a cold start. As soon as a desired operating temperature has been created in the exhaust line, the control unit 14 fl normally sets the fate elements 7a-d in the first position. The entire exhaust solder is thus led through the heat exchanger unit 5. The charge air thus provides optimal cooling. During certain operating times, however, it may be appropriate to reduce the cooling of the charge air. In such cases, the control unit 14 places the flow elements in a suitable intermediate position so that only a certain part of the charge air flow is cooled in the heat exchanger unit while a remaining part of the charge air flow is led through the bypass ducts 6a-d without cooling. With the aid of the fate elements 7a ~ d, the charge air cooling can be regulated steplessly in the charge air cooler 1 with good precision. The flow elements 7a-d form a relatively small angle to the charge air flow both in the first position, the second position and in the intermediate positions. Thus, the charging air receives very small flow losses in connection with the fate elements 7a ~ d. The charge air cooler 1 also has a very compact construction. It thus requires a small mounting space in a vehicle.
    F ig. 9 shows an alternative embodiment of the positioning mechanism. In this case, the shafts 8a-d of the destructive element 7a-d are rotatably connected to each other by means of conical gears 12. It can also be seen here that the destructive elements "Ia-d" have a triangular shape with a base portion attached to a shaft Sa- An electric motor 13 is in this case connected to one of the shafts S. A control unit 14 controls the activation of the electric motor 13 and thus the position assumed by the flow elements 7a-d.
    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. In the embodiment shown, flow elements Ta-d are arranged both in the inlet portion 3a and in the outlet portion 3c. A set of soldering elements 1a-d arranged in one of said portions 3a, 30 may be sufficient to distribute the charge liquor between the heat exchanger unit 5 and the bypass channels 6a-d. The container 3 need not have an eight-sided cross-sectional shape and the heat exchanger unit 5 a four-sided . They may have other shapes resulting in the creation of bypass channels in peripheral areas between the heat exchanger unit 5 and the container 3. The container 3 may, for example, be hexagonal and the heat exchanger unit three-sided. In this case, three bypass channels and three solder elements are created. The heat exchanger 1 as above is not limited to being a charge air cooler but it can, for example, constitute an EGR cooler or any type of heat exchanger where it is desirable to adjust the heat transfer between two media. The gear changer 1 is also not limited to use in a vehicle. The media in the heat exchanger can be of essentially arbitrary kind.
    权利要求:
    Claims (9)
    [1]
    A heat exchanger comprising a container (3) comprising an inlet portion (3a) for receiving a first medium, an intermediate portion (3b) enclosing a heat exchanger unit (5) where a heat transfer takes place between the first medium and a second medium and an outlet portion (3c) where the first medium is discharged from the heat exchanger unit (5), the heat exchanger unit (5) having an outer peripheral surface which in a region is located at a distance from an inner surface of the container (3). ) so as to form a first bypass channel (6a) for the first medium next to the heat exchanger unit (5), and each at the heat exchanger comprises a first rotatable flow element (Sa) adapted to regulate the flow of the first medium through the first bypass channel (6a), characterized in that the heat exchanger unit (5) has an outer peripheral surface which in at least one further area is located at a distance from an inner surface of the container (5) so that at least one further bypass channel (δ) is formed. be) for the first medium next to the friend-exchange exchanger (5), and wherein the heat exchanger comprises at least one further rotatable flow element (7b-d) which is adapted to regulate the flow of the first medium through the further bypass channel (7b-d). ), each of said solder elements (7a »d) having a first end portion which is hingedly connected to the friend changer unit (5) and a second free end portion which is located at a distance from the heat exchanger unit (5).
    [2]
    Heat exchanger according to claim 1, characterized in that the flow elements (7a-d) are rotatably arranged between a first end position in which they block their respective bypass channels (6a-d) so that the entire first medium solder is passed through the heat exchanger unit (5) and in a second end position in which they together block the flow through the heat exchanger unit (5) so that the entire first media flow is led through the bypass channels (6a-d).
    [3]
    Friend changer according to one of the preceding claims, characterized in that the soldering elements (7a-d) are adapted to abut with their free end portions against an inner surface in the inlet portion (3a) or in the outlet portion (3e) when they are in the first position. end position.
    [4]
    Heat exchanger according to one of the preceding claims, characterized in that the fate elements (7a-d) are adapted to abut with their free end portions against one another in the second end position. 10 15 20 25 30 11
    [5]
    Friend changer according to any one of the preceding claims 2 to 4, characterized in that said fl fate elements (7a-d) are positionable in a plurality of intermediate positions between the first position and the second position in which they guide a part of the first medium fl through the spring exchanger unit and a remaining part of the media flow through the bypass channels (6a-d) with a distribution which varies with the distance of the intermediate position to the respective end positions.
    [6]
    Heat exchanger according to one of the preceding claims, characterized in that the fate elements (7a-cl) are arranged at least partially in the inlet space (3a) and / or in the outlet portion (3c) of the container (3).
    [7]
    Friend changer according to one of the preceding claims, characterized in that the container (3) has an inner surface which has eight sides and eight corners in a transverse plane and that the heat exchanger unit (5) which has an outer surface which has four sides and four corners in said transverse plane, the four corners of the heat exchanger unit (5) being fixed in every other corner of the container (3).
    [8]
    S. Heat exchanger according to claim 1, characterized in that it comprises a positioning mechanism (10-14) which is adapted to regulate the position of all the fl element elements (7a-d) in a synchronous manner so that they are simultaneously set in corresponding positions.
    [9]
    Heat exchanger according to claim 8, characterized in that each of the fate elements (7a-d) comprises a shaft (Sa-d) which is rotatably fixed in the winch exchange unit (5), the axes (Sa-d) of adjacent fl fate elements being rotatably connected to each other. IO. Heat exchanger according to Claim 9, characterized in that the axes (Sa-d) of the adjacent fl fuse elements are rotatably connected to one another by means of bevel gears (12).
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    同族专利:
    公开号 | 公开日
    BR112015014675A2|2017-07-11|
    EP2936040A4|2016-08-24|
    SE536960C2|2014-11-11|
    CN104919268A|2015-09-16|
    EP2936040A1|2015-10-28|
    KR20150092288A|2015-08-12|
    RU2015129103A|2017-01-24|
    WO2014098714A1|2014-06-26|
    引用文献:
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    US8424296B2|2010-06-11|2013-04-23|Dana Canada Corporation|Annular heat exchanger|FR3059051B1|2016-11-18|2019-06-28|Valeo Systemes De Controle Moteur|THERMAL CONDITIONING DEVICE FOR FLUID FOR COMBUSTION ENGINE|
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    法律状态:
    2021-08-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251466A|SE536960C2|2012-12-20|2012-12-20|Heat exchanger with bypass ducts|SE1251466A| SE536960C2|2012-12-20|2012-12-20|Heat exchanger with bypass ducts|
    PCT/SE2013/051393| WO2014098714A1|2012-12-20|2013-11-27|Heat exchanger comprising bypass channels|
    RU2015129103A| RU2015129103A|2012-12-20|2013-11-27|HEAT EXCHANGER CONTAINING BYPASS CHANNELS|
    CN201380066356.9A| CN104919268A|2012-12-20|2013-11-27|Heat exchanger comprising bypass channels|
    EP13864302.8A| EP2936040A4|2012-12-20|2013-11-27|Heat exchanger comprising bypass channels|
    BR112015014675A| BR112015014675A2|2012-12-20|2013-11-27|heat exchanger containing bypass channels|
    KR1020157017965A| KR20150092288A|2012-12-20|2013-11-27|Heat exchanger comprising bypass channels|
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