• 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:
    SUMMARYThe invention relates to an expansion tank (1) which is intended to be present in a cooling system of a motor vehicle and which comprises ahousing (2) enclosing an expansion chamber (3). A divorcecradle (16) divides the expansion chamber into an upper space (3a) and a lower space (3b), an inlet opening (7) being covered in the upper space and an outlet opening (5) in the lower space. The upper side of the separator cradle forms a downwardly curved guideway(20) which controls a flow of coolant from the upper space to itlower space. An inlet basin (25) is arranged in the upper space, the upper spirit of the guide track forming an upper edge (26) of the inlet basin and the inlet opening opening into the inlet basin at a level below said upper edge so that itcoolant flowing into the expansion chamber via the inlet opening is caused to rise upwards in the inlet basin and then aver to the guideway via said upper edge.
    公开号:SE1351081A1
    申请号:SE1351081
    申请日:2013-09-19
    公开日:2015-03-20
    发明作者:Zoltan Kardos
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    7by achieving an initial dispersion of the coolant when the coolant flows into the inlet basin.
    Other advantageous features of the expansion tank according to the invention appear from the dependent claims and the following description.
    BRIEF DESCRIPTION OF THE DRAWINGSThe invention will be described in more detail belowhelped by lining examples, with male reference to the accompanying drawings. It appears in:Fig. 1 is a side view of an expansion tank according to a first embodiment.embodiment of the present invention,Fig. 2 is a perspective view of the expansion tank according to Fig. 1,Fig. 3 is a perspective view corresponding to Fig. 2, but supplementedwith a schematically illustrated flood of cooling waternom expansion tank,Fig. 4 is a cross-section along the line Iv-Iv in Fig. 1,Fig. A perspective view of an expansion tank according to a secondembodiment of the present invention, andFig. 6 is a schematic diagram of a cooling system comprising anexpansion tank according to the present invention.8DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTIONFigs. 1-4 illustrate an expansion tank 1 according to an embodimentof the present invention. This expansion tank 1 is intendedthat none in a cooling system of a motor vehicle, for example a cooling system 50 of the type illustrated in Fig. 6. The expansion tank 1 comprises an outer casing 2 of rigid material, for example plastic, and an expansion chamber 3 delimited by the casing. In the illustratedthe example comprises the housing 2 a base part 2a and one on the base partmounted side plate 2b (see Fig. 4), which forms a longitudinal side cradle of the housing 2. The side plate 2b is arranged to be fastened to a flange 4 of the base part 2a, for example by screw connections. Figs. 1-3 show the expansion tank with the side plate 2b removed.The body 2 is provided with an outlet opening 5 (see Fig. 2) which is intended to be connected to a cooling water line of a cooling system to allow the exchange of cooling water between the expansion chamber 3 and other parts of the cooling system via this outlet opening 5.The opening 5 is arranged at the bottom of the expansion chamber 3. A rudder nozzle 6 connected to the outlet opening 5 projects from the underside of the housing. Said cooling water line is intended to be connected to this rudder nozzle 6.
    The housing 2 is provided with two inlet openings 7 (see Fig. 2) which areintended to be connected to each vent line of said cooling system to allow the inflow of cooling water and air from the vent lines to the expansion chamber 3 via these inlet openings. The inlet openings 7 are arranged in a side cradle 8of the housing 2. Each inlet opening 7 is connected to a rudder nozzle 99projecting from the side cradle of the housing 8. Said vent lines are intended to be connected to these pipe sockets 9. The housing 2 could alternatively be provided with only an inlet opening 7 for connection to a vent line of the cooling system.
    As a further alternative, the housing 2 could be providedwith more than two inlet openings.
    The housing 2 is also provided with a closable filling opening 10, via which cooling water is insertable into the expansion chamber 3 toin this way allow the filling of cooling water to the said cooling system.
    This filling opening 10 can be closed by means of a removable lid (not shown).
    An overpressure valve 11 for limiting the pressure in the expansionChamber 3 and a return valve 12 are arranged on a cradle 13 of the housing 2. These valves 11, 12 are schematically illustrated in Figs. 1-3. In the illustrated embodiment, said cradle 13 is an upper cradle of the base part 2a of the housing. In the illustrated example, said valves 11, 12 are arranged at a distance from each other in eachtheir opening in the said cradle 13 but they could alternativelybe placed close to each other in a common valve unit which is arranged in a larger opening in said cradle 13. Via the overpressure valve 11 air and coolant are allowed to flow out from the upper part of the expansion chamber 3 when in connectionWith the volume increase of the cooling water, an overpressure arises in the expansion chamber 3 which is higher than a level given by the overpressure valve. Via the return valve 12, air is allowed to flow into the upper part of the expansion chamber 3 from the environment when a negative pressure arises in connection with the cooling water volumein the expansion chamber 3 which is lower than a level given by the return valve.
    Inside the housing 2 a partition cradle 16 is arranged. This partition 165 divides the expansion chamber 3 into an upper space 3a above the partition 16 and a lower space 3b below the partition 16. The inlet openings 7 are covered in the upper space 3a and the outlet opening 5 is covered in the lower space 3b. The separating cradle 16 extends from a first side cradle 8 of the housing 2 in the directionagainst an opposite second side cradle 17 of the housing. The divider16 has a width corresponding to the distance between the side plate 2b and the opposite side cradle 18 of the housing 2. The separating cradle 16 has a first longitudinal edge 19a (see Fig. 2) which abuts close to the side plate 2b and an opposite secondlongitudinal edge 19b which abuts tightly against the side cradle18.
    The upper side of the partition cradle forms a downwardly directed guide path 20 which is arranged to control a flow of cooling water from the upper space.3a to the lower space 3b. This guideway 20 has an upper end 21 facing the first side cradle 8 and a lower end 22 facing the second side cradle 17. The lower end 22 of the separating cradle is arranged at a distance from the second side cradle 17 so that between the lower end 22 of the separating cradle and the second Si-the dovetail 17 forms a gap 23 which forms a river connectionbetween the upper space 3a and the lower space 3b.
    An inlet basin 25 is arranged in the upper space 3a. The upper end 21 of the guideway forms an upper edge 26 of the inlet base 30 the song 25 and the inlet openings 7 open into the inlet basin11At a level below said upper edge 26 so that the cooling water flowing into the expansion chamber 3 via the inlet openings 7 is caused to rise upwards in the inlet basin 25 and then over to the guide path 20 via said upper edge 26.
    The guideway 20 includes a flat inclined and straight, or at least substantially straight, first guideway portion 20a, a curved second guideway portion 20b and a steeply inclined and straight, or at least substantially straight, third guideway portion 20c. The firstthe guideway portion 20a extends from the upper end 21 of the guideway toan upper end 27 of the second guideway portion 20b and slopes flat downwardly from the upper end 21 of the guideway to the upper end 27 of the second guideway portion toward the second side cradle 17 at an angle α of 5-15 ° relative to the horizontal plane. The second guideway pairtiet 20b stretches in turn in a! Age from a lower spirit 28 ofthe first guideway portion 20a to an upper end 29 of the third guideway portion 20c. The third guideway portion 20c extends from a lower end 30 of the second guideway portion 20b to the lower end 22 of the guideway and slopes steeply downward from the second guideway.the lower end 30 of the track portion to the lower end 22 of the guide track in thetowards the second side rocker 17 at an angle [3 of 5-15 ° relative to the vertical plane. The third guideway portion 20c, together with the second side cradle 17, defines a wedge-shaped space 3c inside the expansion chamber 3.
    In the illustrated embodiment, the partition cradle 16 comprises a portion 31 extending from the first side cradle 8 to the upper end 21 of the guideway, the inlet basin 25 being delimited from the lower space 3b of this portion 31 of the partition cradle.12The upper part of the lower space 3b is connected to the upper part of the upper space 3a via an air duct 32 which in the illustrated example extends through the partition 16 near the upper end 21. The air duct 32 is advantageouslyformed by a rudder 33 which is fixed to the partition 16 and whichappears in the vertical direction upwards from this, as illustrated in Figs. 1-3. The tube 33 is tipped in Dada spirits and has at its lower spirit an inlet opening which is connected to a continuous hall in the partition 16. At its upper spirit the tube 33 has an outlet opening which opens into the upper part of the upper space 3a.
    In the lower space 3b there is a labyrinth-shaped river channel 35 between the coolant liquid between the above-mentioned gap 23 and the outletopening 5. In the illustrated embodiment, this labialridge-shaped river channel 35 formed by a number of partitions 37,38 which are arranged in the lower space 3b. Each of the intermediate walls 37, 38 extends vertically between a bottom surface39 in the lower space 3b and the underside 40 of the partition.Every other intermediate cradle 37 has a first longitudinal edge 41a (see Fig. 4) which abuts the side cradle 18 and an opposite second longitudinal edge 41b which is arranged at a distance from the side plate 2b so that it is formed between the second longitudinal edge 41b and the side plate 2b a column that constitutes one25 river passage father coolant. The other intermediate walls 38 have a first longitudinal edge 43a which abuts close to the side plate 2b and an opposite second longitudinal edge 43b which is arranged at a distance from the side cradle 18 so that it is formed between the second longitudinal edge 43b and the side cradle 18a gap that forms a river passage for the cooling water. In the illustrative13For example, four partitions 37, 38 are arranged in the lower space 3b, but the partitions 37, 38 in the lower space 3b can of course be as many as fewer than four in number. Of course, it is also possible to design the labyrinth-shaped5 flow channel 35 in the lower space 3b in another way than what has been described.
    Fig. 3 illustrates the flow of coolant through the expansion chamber 3. From one or more vent lines, coolant andwith this accompanying air bubbles into the inlet basin 25 viathe inlet openings 7. In the inlet basin 25, an initial venting of the cooling liquid takes place by air bubbles rising up to the surface of the cooling liquid received in the inlet basin and uniting with the air above the water surface. From the inlet basins 25 runsthe coolant over to the guideway 20 via the upper of the inlet basinedge 26. By means of the inlet basin 25 it is ensured that the cooling liquid flows over the guide track 20 in a selectively distributed flow so that a thin cooling liquid layer is formed on the first and second guide track portions 20a, 20b. At the passage along the first and secondIn the guideway portions 20a, 20b, a further venting of the coolant takes place by air bubbles accompanying the coolant coming into contact with and joining with the air above the coolant layer on the guideway. Via the curved second guideway portion 20b, the coolant then leaves the guideway and slides down into the coolant volumeWhich is collected in the wedge-shaped space 3c between the third guideway portion 20c and the second side cradle 17. When the coolant leaves the guideway 20 and hits the surface of the coolant volume in the wedge-shaped space 3c, a small amount of air will be drawn down into the cooling vessel in the form of air bubbles. . Some of these air bubblesrises directly up to the surface has the coolant volume in the wedge-shaped14space 3c and unite with the air above the water surface, while other of these air bubbles adhere to the surface of the third guideway portion 20c to then loosen and rise to and join the air above the surface of the cooling water volume in the wedge-shaped outlet.space 3c. Via the column 23, the cooling liquid then flows further intothe space 3b under the partition 16. In the latter space 3b the cooling liquid is led through the labyrinth-shaped river channel 35 to be finally led out of the expansion chamber 3 via the outlet opening 5. At the passage of the cooling liquid through the labyrinthmade the river channel 35 a final deaeration of the cooling water takes placeby rising air bubbles rising to the surface of the cooling water volume in the labyrinthine flow channel 35 and merging with the air above the water surface. The volume of air that has accumulated above the water surface in the space 3b under the partition cradle 16 isvia the air duct 32 in connection with the volume of airload in the space 3a above the partition 16 so that air can flow freely between these air volumes.
    Fig. 5 illustrates an alternative embodiment in which the expansion deviceThe housing 2 is provided with an inlet opening 7 'which has the shape of an elongate horizontal gap. The embodiment illustrated in Fig. 5 otherwise corresponds to the embodiment illustrated in Figs. 1-4 and described above.
    Fig. 6 schematically illustrates a motor vehicle intended for coolingThis cooling system 50 comprises a cooling circuit 51 for cooling an internal combustion engine 52 of the vehicle by means of a cooling water flowing in the cooling circuit, preferably in the form of water with any freezing point reducing additives such asvis glycol. A cooling water pump 53 is connected to the cooling circuit 51 forcirculation of the coolant in the cooling circuit. Furthermore, a cooler 54, for example in the form of a conventional cooling water cooler, is connected in the cooling circuit 51 for cooling said cooling water. This cooler 54 comprises a cooling water inlet 55a which is connected to a coolingWater outlet 56b of the internal combustion engine 52 via a first line 57 of the cooling circuit and a cooling water outlet 55b connected to a cooling water inlet 56a of the internal combustion engine 52 via a second line 58 of the cooling circuit. In the illustrated example, the coolant pump 53 is arranged in the second line 58.
    The first line 57 is connected to the second line58 via a third line 59 of the cooling circuit. This third line59 is arranged to allow coolant to be returned from the internal combustion engine coolant outlet 56b to the internal combustion engine coolant inlet 56a without the coolant passing through saidcooler 54. The third line 59 thus constitutes a bypass,via which the cooling liquid circulating in the cooling circuit 51 can be bypassed the cooler 54 in its passage between the cooling liquid outlet 56b and the cooling water inlet 56a of the internal combustion engine 52. Between the cooling water inlet 56a and the cooling water outlet 56b of the combustion engine52, the coolant is circulated through coolant channels (noshown) inside the internal combustion engine while absorbing heat from the internal combustion engine. A thermostat 60 is arranged at the connection point between the first line 57 and the third line 59. Depending on the temperature of the cooling liquid, the thermostat conducts60 the coolant flowing from the internal combustion engine to thethe coil 54 to be cooled therein before the coolant is returned to the internal combustion engine 52 or directly back to the internal combustion engine 52 via the third line 59 without passage through the cooler 54.16The coolant flowing through the radiator 54 is cooled by air which is biased towards the radiator when the motor vehicle is in motion. The cooling system 50 may also include a flake (not shown) which is arranged to generate an air stream through the cooler 54. This flap maybe connected to the internal combustion engine 52 may be driven by it.
    The cooling system 50 is provided with an expansion tank 1 of the type described above. The outlet opening 5 of the expansion tank is connected to the above-mentioned second line 58 via a fourth line 61in the cooling system. The fourth line 61 is connected to itthe second line 58 at a point located between the cooler 54 and the coolant pump 53. The inlet openings 7 of the expansion tank are connected via a first vent line 62 to the cooler 54 and via a second vent line 63 connected to the coolant channels inthe combustion engine 62. Via the vent lines 62, 63 are ledcoolant into the expansion chamber 3 inside the expansion tank 1 and via the above-mentioned fourth conduit 61 coolant is returned from the expansion chamber 3 to the cooling circuit 51 after venting in the expansion chamber.
    The expansion tank according to the invention is particularly intended for use in a heavy motor vehicle, such as, for example, a bus, a towing vehicle or a truck.
    The invention is of course not in any way limited to those abovedescribed embodiments, without a multitude of possibilities for modifications thereof, it will be obvious to a person skilled in the art, without the latter deviating from the basic idea of the invention as defined in the appended claims.17
    权利要求:
    Claims (13)
    [1]
    1. an expansion chamber (3) enclosed in the housing (2) for receiving cooling liquid, 2. an inlet opening (7; 7 ') arranged in the housing (2) which is intended to be connected to one or more vent lines of said cooling system to allow inflow of cooling water and air to the expansion chamber (3) via this inlet opening (7; 7 '), 3. an outlet opening (5) arranged in the housing (2) which is intended to be connected to a cooling water line of said cooling system to allow outflow of cooling water from the expansion chamber (3) to this cooling water line via this outlet opening (5), and 4. a separating cradle (16) arranged inside the housing (2), which divides the expansion chamber (3) into an upper space (3a) above the separating cradle (16). ) and a lower space (3b) below the partition (16), said inlet opening (7; 7 ') being covered in the upper space (3a) and said outlet opening (5) being covered in the lower space (3b), characterized therefrom : 5. that the separating cradle (16) extends from a first side cradle (8) of the housing t (2) in the direction of an opposite second side cradle (17) of the housing, 6. that the upper side of the separating cradle forms a downwardly curved guide path (20) which is arranged to direct a flow of cooling water from the upper space (3a) to the lower space ( 3b), this guideway (20) having an upper end (21) facing the first side cradle (8) and a lower end (22) facing the second side cradle (17), 7. that the upper space (3a) is connected to the lower space (3b) via a gap (23) between the lower end (22) of the guideway and the second side cradle (17), and 8. that an inlet basin (25) is arranged in the upper space (3a), wherein the upper end (21) of the guideway forms an upper edge (26) of the inlet basin (25) and the inlet opening (7; 7 ') opens into the inlet basin (25) at a level below said upper edge (26) so that the cooling water flowing into the expansion chamber (3) via the inlet opening (7; 7') is caused to rise upwards in the inlet basin (25) and then over to the guideway (20) via said upper edge (26).
    [2]
    An expansion tank according to claim 1, characterized in that the guideway (20) comprises a flat inclined and straight, or at least substantially straight, first guideway portion (20a), a curved second guideway portion (20b) and a steeply inclined and straight, or at least substantially straight, third guideway portion (20c), the first guideway portion (20a) extending from the upper end (21) of the guideway to an upper end (27) of the second guideway portion (20b), the second guideway portion (20b) extending in a baggage between the first and third guideway portions (20a, 20c) and the third guideway portion (20c) extends from a lower end (30) of the second guideway portion (20b) to the lower end (22) of the guideway.
    [3]
    Expansion tank according to claim 2, characterized in that the first guideway portion (20a) slopes flat downwards from the upper end (21) of the guideway 19 to the upper end (27) of the second guideway portion at an angle (α) of 5-15 ° relative to the horizontal plane. .
    [4]
    Expansion tank according to claim 2 or 3, characterized in that the third guideway portion (20c) slopes steeply downwards from the lower end (30) of the second guideway portion to the lower end (22) of the guideway with an angle (p) of 5-15 ° relative to the vertical plane.
    [5]
    An expansion tank according to any one of claims 1-4, characterized in that the separating cradle (16) comprises a portion (31) extending between the first side cradle (8) and the upper end (21) of the guideway, the inlet basin (25) being defined from the lower space (3b) of this portion (31) of the partition.
    [6]
    Expansion tank according to any one of claims 1-5, characterized in that the upper part of the lower space (3b) is connected to the upper part of the upper space (3a) via an air duct (32) extending through the partition ( 16).
    [7]
    Expansion tank according to claim 6, characterized in that the air duct (32) is formed by a tube (33) which is fixed to the partition (16) and which projects in the vertical direction above it.
    [8]
    Expansion tank according to any one of claims 1-7, characterized in that a labyrinth-shaped river channel (35) is arranged for the coolant water in the lower space (3b), this river channel (35) extending between said gap (23) and the outlet opening ( 5).
    [9]
    Expansion tank according to claim 8, characterized in that a plurality of intermediate walls (37, 38) are arranged in the lower space (3b) to form said labyrinth-shaped river channel (35).
    [10]
    Expansion tank according to claim 9, characterized in that the intermediate cradles (37, 38) extend vertically between a bottom surface (39) in the lower space (3b) and the underside (40) of the separating cradle.
    [11]
    An expansion tank according to any one of claims 1-10, characterized in that said inlet opening (7 ') has the shape of an elongated horizontal gap.
    [12]
    Expansion tank according to any one of claims 1-11, characterized in that an overpressure valve (11) is arranged in the housing (2), this overpressure valve (11) being arranged to allow air and coolant to flow out of the upper space (3a). ) to the environment when an overpressure arises in the expansion chamber (3) which is higher than a level given by the overpressure valve (11).
    [13]
    An expansion tank according to any one of claims 1-12, characterized in that a return valve (12) is arranged in the housing (2), said return valve (12) being arranged to allow air to flow into the upper space (3a) from the environment when a negative pressure arises in the expansion chamber (3) which is lower than a level given by the return valve (12). / 2 F 3 --- -
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    同族专利:
    公开号 | 公开日
    SE537480C2|2015-05-12|
    WO2015041586A1|2015-03-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4098328A|1977-06-16|1978-07-04|Borg-Warner Corporation|Cross-flow radiator deaeration system|
    DE10041121B4|2000-08-22|2015-01-08|Behr Gmbh & Co. Kg|Heat exchanger with several heat transfer circuits|
    DE10050852A1|2000-10-13|2002-05-02|Geiger Technik Gmbh|Cooling water expansion tank for cooling water circuit of motor vehicles has round circumferential wall, and inlet pipe connector enters tank tangentially|
    GB0318402D0|2003-08-06|2003-09-10|Ford Global Tech Llc|Cooling system expansion tank|
    DE102009031582A1|2009-07-03|2011-01-05|Robert Bosch Gmbh|surge tank|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351081A|SE537480C2|2013-09-19|2013-09-19|expansion Tank|SE1351081A| SE537480C2|2013-09-19|2013-09-19|expansion Tank|
    PCT/SE2014/051045| WO2015041586A1|2013-09-19|2014-09-11|Expansion tank|
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