JP6934388B2 - Caseless oil cooler - Google Patents

Caseless oil cooler Download PDF

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JP6934388B2
JP6934388B2 JP2017196244A JP2017196244A JP6934388B2 JP 6934388 B2 JP6934388 B2 JP 6934388B2 JP 2017196244 A JP2017196244 A JP 2017196244A JP 2017196244 A JP2017196244 A JP 2017196244A JP 6934388 B2 JP6934388 B2 JP 6934388B2
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周平 松坂
周平 松坂
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T.RAD CO., L T D.
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Description

本発明は、各プレート間にオイル流路と冷却水流路とを交互に形成したケースレスオイルクーラに関する。 The present invention relates to a caseless oil cooler in which an oil flow path and a cooling water flow path are alternately formed between each plate.

従来のケースレスオイルクーラとして、特許文献１に記載のもの及び特許文献２に記載のものが知られている。さらには、特許文献３に記載のものも知られている。
これらは、皿状のプレートを積層し、各プレート間にオイル流路と冷却水流路とを交互に形成し、オイル流路内にインナーフィンを配置して、高温のオイルと冷却水との間に熱交換器を行わせるものである。 As conventional caseless oil coolers, those described in Patent Document 1 and those described in Patent Document 2 are known. Further, those described in Patent Document 3 are also known.
These are made by stacking dish-shaped plates, alternately forming an oil flow path and a cooling water flow path between the plates, and arranging inner fins in the oil flow path between the high temperature oil and the cooling water. To perform a heat exchanger.

特開平１０−１８５４６２号公報Japanese Unexamined Patent Publication No. 10-185462 特開平５−１８９０号公報Japanese Unexamined Patent Publication No. 5-1890 特開２０１１−１６３６２５号公報Japanese Unexamined Patent Publication No. 2011-163625

皿状プレートの外周縁はテーパに形成されているため、そのカップ寸法にバラツキが生じ易い。そのため、積層時に各プレート間に隙間ができ、ろう付の際にろうヒケが発生し、ろう付不良となることがしばしばあった。
また、その隙間を押えるため、ろう付治具にバンドを設けて、プレート間に締めつけを行うことがある。このとき、プレート間の潰れを防止する必要があり、ろう付治具が複雑になると共に、各製品ごとにそれを取付けるのが面倒であった。 Since the outer peripheral edge of the dish-shaped plate is formed in a tapered shape, the cup size is likely to vary. Therefore, a gap is formed between the plates during laminating, and brazing sink marks occur during brazing, which often results in poor brazing.
Further, in order to press the gap, a band may be provided on the brazing jig and tightened between the plates. At this time, it was necessary to prevent crushing between the plates, which made the brazing jig complicated and troublesome to install it for each product.

なお、カッププレートにおいて外周を垂直壁で形成するものも存在したが、積層方向への沈み込みが生じるので、それを規制する特別な治具の設計が必要であった。
そこで、本発明は皿状に形成された多数のプレートを積層して、ケースレスオイルクーラを形成するものにおいて、各プレートの寸法精度を向上させると共に、各プレートの積層時に複雑な治具を用いることなく、隙間なく正確に積層できるケースレスオイルクーラを提供することを目的とする。 In some cup plates, the outer circumference is formed by a vertical wall, but since subduction occurs in the stacking direction, it is necessary to design a special jig to regulate it.
Therefore, in the present invention, in a caseless oil cooler formed by laminating a large number of plates formed in a dish shape, the dimensional accuracy of each plate is improved and a complicated jig is used when laminating each plate. It is an object of the present invention to provide a caseless oil cooler that can be accurately laminated without gaps.

請求項１に記載の本発明は、第１プレート（２）および第２プレート（３）は、それぞれのプレート（２）（３）が平坦なベース平面（１）の全周縁に全体としてその中心部から外側に向かって傾斜して立上げられた皿状に形成され、各プレート（２）（３）が間隔を有して交互に積層されており、各プレート間に冷却水流路（４）とオイル流路（５）とを交互に形成してなるケースレスオイルクーラにおいて、
第１プレート（２）は、前記ベース平面（１）の周縁から、ベース平面（１）に立てた垂線（Ｌ）に対して外側へ鋭角に傾斜して立ち上げられた傾斜部（６）と、その傾斜部（６）の縁から前記垂線（Ｌ）に略平行に立ち上げられた垂直部（７）と、その垂直部（７）の縁から前記垂線（Ｌ）に対して外側に鋭角に傾斜して立ち上げられた傾斜部（８）と、を有し、
第２プレート（３）は、前記ベース平面（１）の周縁から、前記垂線（Ｌ）に略平行に立ち上げられた垂直部（９）と、その垂直部（９）の縁から前記垂線（Ｌ）に対して外側に鋭角に傾斜して立ち上げられた傾斜部（１０）と、その傾斜部（１０）の縁から前記垂線（Ｌ）に略平行に立ち上げられた垂直部（１１）と、を有し、
それら各プレート（２）（３）の横断面における垂直部と傾斜部とが鈍角の、くの字状に曲折されてなり、
第１プレート（２）と第２プレート（３）の各垂直部（７）（９）どうし及び、傾斜部（６）（１０）どうしが整合しかつ、各接触部が互いにろう付されてなるケースレスオイルクーラである。 According to the first aspect of the present invention, the first plate (2) and the second plate (3) are centered on the entire peripheral edge of the base plane (1) on which the respective plates (2) and (3) are flat. The plates (2) and (3) are alternately laminated at intervals, and the cooling water flow path (4) is formed between the plates. In a caseless oil cooler in which and the oil flow path (5) are alternately formed.
The first plate (2) has an inclined portion (6) raised from the peripheral edge of the base plane (1) so as to be inclined outward at an acute angle with respect to the perpendicular line (L) erected on the base plane (1). , A vertical portion (7) raised substantially parallel to the vertical line (L) from the edge of the inclined portion (6), and an acute angle outward from the edge of the vertical portion (7) with respect to the vertical line (L). It has an acute-angled portion (8), which is tilted to and raised.
The second plate (3) has a vertical portion (9) raised substantially parallel to the perpendicular line (L) from the peripheral edge of the base plane (1) and the vertical portion (9) from the edge of the vertical portion (9). An inclined portion (10) raised at an acute angle to the outside with respect to L), and a vertical portion (11) raised substantially parallel to the vertical line (L) from the edge of the inclined portion (10). And have
And the inclined portion the vertical portion of the obtuse angle of the cross section of each of these plates (2) (3), it is bent in dogleg shape,
The vertical portions (7) and (9) of the first plate (2) and the second plate (3) and the inclined portions (6) and (10) are aligned with each other, and the contact portions are brazed to each other. It is a caseless oil cooler.

請求項２に記載の本発明は、各プレート（２）（３）の前記傾斜部（６）（１０）は、前記垂線（Ｌ）に対して、１０°〜２５°傾斜した請求項１に記載のケースレスオイルクーラである。
請求項３に記載の本発明は、積層方向に、各傾斜部どうしと、垂直部どうしとを交互に整合して、各プレートがそれぞれ各部で三重に重なった請求項１または請求項２に記載のケースレスオイルクーラである。 The present invention according to claim 2, wherein the inclined portions (6) and (10) of the plates (2) and (3) are inclined by 10 ° to 25 ° with respect to the perpendicular line (L). The caseless oil cooler described.
The present invention according to claim 3 is described in claim 1 or 2, wherein the inclined portions and the vertical portions are alternately aligned with each other in the stacking direction, and the plates are triple-layered at each portion. It is a caseless oil cooler.

本発明は、第１プレート２と第２プレート３の各垂直部７、９どうし及び、傾斜部６、１０どうしが整合して、その垂直部と傾斜部の横断面が、鈍角の、くの字状に曲折されて、その接触部間が互いにろう付されるものである。
ろう付される垂直部と傾斜部とは、それぞれが、鈍角の、くの字状に曲折されているため、立ち上げ面全体の剛性が大きくなり、各プレートの成形精度を高く維持できる。そのため、積層方向への比較的小さな押圧力で各プレートを整合させて積層することができ、各プレートの隙間を排除して、ろう引けのない、正確なろう付ができる。
即ち、各垂直部７、９どうしは積層方向に重ねる際、厚み方向への比較的小さな押圧で、各プレート２、３間の整合が容易となる。そして、垂直部と傾斜部とが外側に鈍角の、くの字状に曲折されているため、小さな押圧力で傾斜部どうしを整合できる。また各プレートのプレス成形の際には、それらが鈍角の、くの字に曲折されて剛性が強く、変形しにくいので、成形誤差を小さくできる。 In the present invention, the vertical portions 7, 9 of the first plate 2 and the second plate 3 and the inclined portions 6, 10 are aligned with each other, and the cross section of the vertical portion and the inclined portion has an obtuse angle. It is bent in a shape and the contact parts are brazed to each other.
Since each of the brazed vertical portion and the inclined portion is bent in an obtuse angle in a dogleg shape, the rigidity of the entire rising surface is increased, and the molding accuracy of each plate can be maintained high. Therefore, each plate can be aligned and laminated with a relatively small pressing force in the laminating direction, gaps between the plates can be eliminated, and accurate brazing without brazing can be performed.
That is, when the vertical portions 7 and 9 are stacked in the stacking direction, a relatively small pressure in the thickness direction facilitates alignment between the plates 2 and 3. Since the vertical portion and the inclined portion are bent outward in an obtuse angle in a dogleg shape, the inclined portions can be aligned with each other with a small pressing force. Further, during press molding of each plate, they are bent in an obtuse angle and bent into a dogleg shape to have high rigidity and are not easily deformed, so that molding error can be reduced.

請求項２に記載のように、前記傾斜部６、１０を、垂線（Ｌ）に対して、１０°〜２５°の比較的小さな鋭角に形成した場合には、各プレートの立ち上げ部の整合性がさらによくなる。
請求項３に記載の発明のように、積層方向に、各傾斜部どうしと、垂直部どうしとで交互に、三重に重ねた場合には、各部の剛性を強くし、ろう付強度が強く、漏れのないオイルクーラとなる。 As described in claim 2, when the inclined portions 6 and 10 are formed at a relatively small acute angle of 10 ° to 25 ° with respect to the perpendicular line (L), the rising portions of the respective plates are aligned. The sex gets even better.
As in the invention of claim 3, when the inclined portions and the vertical portions are alternately and triple-stacked in the stacking direction, the rigidity of each portion is increased and the brazing strength is increased. It becomes a leak-free oil cooler.

本発明のオイルクーラの要部分解図。An exploded view of a main part of the oil cooler of the present invention. 同オイルクーラの組立て状態を示す要部縦断面図。A vertical sectional view of a main part showing the assembled state of the oil cooler. 同オイルクーラの組立て状態を示す断面図であって、図４のＩＩＩ−ＩＩＩ矢視断面図。It is sectional drawing which shows the assembled state of the oil cooler, and is the sectional view | FIG. 同オイルクーラの平面図。Top view of the oil cooler.

次に、図面に基づいて本発明の実施の形態につき説明する。
図１は本発明のオイルクーラの要部分解図であり、図２はその組立て状態を示す要部縦断面図、図３は同組立て状態を示す断面図であって、図４のＩＩＩ−ＩＩＩ矢視断面図、図４は同オイルクーラの平面図である。
このオイルクーラは、ベースプレート１６上に、他のプレートより厚みの厚い下端プレート１２が配置され、その上方に順次第１プレート２と第２プレート３とが積層される。両プレートは共に平坦に形成されたベース平面１の縁から外側に傾斜して立ち上げられたものである。その立ち上げの形状は、第１プレート２と第２プレート３では異なっている。 Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded view of a main part of the oil cooler of the present invention, FIG. 2 is a vertical cross-sectional view of the main part showing the assembled state, and FIG. 3 is a cross-sectional view showing the assembled state, III-III of FIG. A cross-sectional view taken along the arrow, FIG. 4 is a plan view of the oil cooler.
In this oil cooler, a lower end plate 12 thicker than the other plates is arranged on the base plate 16, and the first plate 2 and the second plate 3 are sequentially laminated on the lower end plate 12. Both plates are erected so as to be inclined outward from the edge of the base plane 1 formed flat. The shape of the rise is different between the first plate 2 and the second plate 3.

即ち、第１プレート２は、ベース平面１の縁部から、そこに立てた垂線Ｌに対して、傾斜角度α鋭角に外側に傾斜する傾斜部６と、その傾斜部６の縁部から垂線Ｌに対して略平行に立ち上がる垂直部７と、その垂直部７の縁部から垂線Ｌに対して外側に鋭角な傾斜角度α傾斜する傾斜部８とを有する。
これに対して、第２プレート３は、その縁部から垂線Ｌに対し略平行に立ち上がる垂直部９と、その垂直部９の縁部から垂線Ｌに対して外側に鋭角な傾斜角度αに立ち上がる傾斜部１０と、その傾斜部１０の縁から垂線Ｌに略平行に立ち上がる垂直部１１とを有する。 That is, the first plate 2 has an inclined portion 6 that inclines outward at an inclination angle α sharp angle with respect to the perpendicular line L erected from the edge portion of the base plane 1, and a perpendicular line L from the edge portion of the inclined portion 6. It has a vertical portion 7 that rises substantially parallel to the vertical portion 7, and an inclined portion 8 that is inclined outward by a sharp inclination angle α with respect to the perpendicular line L from the edge portion of the vertical portion 7.
On the other hand, the second plate 3 rises from the edge portion of the vertical portion 9 substantially parallel to the perpendicular line L, and from the edge portion of the vertical portion 9 to the outside at an acute angle α with respect to the perpendicular line L. It has an inclined portion 10 and a vertical portion 11 rising substantially parallel to the perpendicular line L from the edge of the inclined portion 10.

次に、ベースプレート１６上に配置される下端プレート１２は、そのベース平面１の縁部から垂線Ｌに対して略垂直に立ち上がる垂直部１２ｃと、その縁から垂線Ｌに対して傾斜角度α外側に鈍角に立ち上がる傾斜面１２ａと、その傾斜面１２ａの縁部から垂線Ｌに対して略平行に立ち上がる垂直部１２ｂとを有する。そして、この下端プレート１２上に第１プレート２と第２プレート３とが、図２及び図３に示す如く、隙間ｈ１とｈ２とを有して交互に積層される。 Next, the lower end plate 12 arranged on the base plate 16 has a vertical portion 12c rising substantially perpendicular to the perpendicular line L from the edge portion of the base plane 1 and an obtuse angle α outside the edge portion of the vertical line L. It has an inclined surface 12a that rises at an obtuse angle, and a vertical portion 12b that rises substantially parallel to the perpendicular line L from the edge portion of the inclined surface 12a. Then, the first plate 2 and the second plate 3 are alternately laminated on the lower end plate 12 with gaps h1 and h2 as shown in FIGS. 2 and 3.

この例では、各第１プレート２，第２プレート３及び下端プレート１２の表面には、予めろう材が被覆されたアルミニウム材が用いられる。そして、図２に示すように各プレートを積層した状態で、上端プレート１３上に図示しない重石を載置することにより、各プレート間を整合して互いにその外周壁面を密着して接触させることができる。次いで、それらを高温の炉内に挿入することにより各プレート間を一体的にろう付固定することができる。 In this example, an aluminum material previously coated with a brazing material is used on the surfaces of the first plate 2, the second plate 3, and the lower end plate 12. Then, as shown in FIG. 2, by placing a weight stone (not shown) on the upper end plate 13 in a state where the plates are laminated, the plates can be aligned and the outer peripheral wall surfaces thereof can be brought into close contact with each other. can. Then, by inserting them into a high temperature furnace, the plates can be integrally brazed and fixed.

なお、この例では図２に示す如く、第２プレート３の下面側に位置する第１プレート２との間隔ｈ１よりも、第２プレート３の上面側に位置する第１プレート２との間隔ｈ２は大に形成され、この間隔ｈ２間に図３の如く、インナーフィン１７が配置され、間隔ｈ１間には第１プレート２の表面に突設されたディンプル１５が設けられている。そして、間隔ｈ１間に冷却水流路４が間隔ｈ２間にオイル流路５が形成される。 In this example, as shown in FIG. 2, the distance h2 from the first plate 2 located on the upper surface side of the second plate 3 is larger than the distance h1 from the first plate 2 located on the lower surface side of the second plate 3. Is formed to be large, inner fins 17 are arranged between the intervals h2 as shown in FIG. 3, and dimples 15 projecting from the surface of the first plate 2 are provided between the intervals h1. Then, a cooling water flow path 4 is formed between the intervals h1 and an oil flow path 5 is formed between the intervals h2.

そして、オイル流路５内にオイルパイプ１８からオイルが供給され、冷却水流路４内に冷却水パイプ１９から冷却水が供給されて、両流体間に熱交換が行われる。そのオイルは一方のオイルパイプ１８からオイル流路５を介して他方のオイルパイプ１８に流通し、冷却水は一方の冷却水パイプ１９から冷却水流路４を介して他方の冷却水パイプ１９に流通する。最下端に位置する、ベースプレート１６は方形で、その四隅に締結用のボルト孔が形成されている。 Then, oil is supplied from the oil pipe 18 into the oil flow path 5, cooling water is supplied from the cooling water pipe 19 into the cooling water flow path 4, and heat exchange is performed between the two fluids. The oil flows from one oil pipe 18 to the other oil pipe 18 via the oil flow path 5, and the cooling water flows from one cooling water pipe 19 to the other cooling water pipe 19 via the cooling water flow path 4. do. The base plate 16 located at the lowermost end is square, and bolt holes for fastening are formed at its four corners.

なお、上記実施例において垂直部７及び垂直部９は、垂線Ｌに対して略平行であると記載したが、この略とは僅かに外側に傾斜しても良いことを含む意味である。
また、この例では各プレート２、３および下端プレート１２、上端プレート１３はそれぞれ平面円形に形成されている。これに代えて、平面が略方形でその四隅部を円弧状に形成してもよい。 In the above embodiment, the vertical portion 7 and the vertical portion 9 are described as being substantially parallel to the perpendicular line L, but this abbreviation means that the vertical portion 7 and the vertical portion 9 may be slightly inclined outward.
Further, in this example, the plates 2, 3 and the lower end plate 12 and the upper end plate 13 are each formed into a flat circular shape. Alternatively, the plane may be substantially square and the four corners thereof may be formed in an arc shape.

なお、図１において第１プレート２では傾斜部６及び傾斜部８の垂線Ｌに対する傾斜角度αは夫々同一で、１０°〜２５°であり、その中央値は１７．５°である。また、第２プレート３における傾斜部１０の傾斜角度αも１０°〜２５°であり、その中央値は１７．５°である。同様に、下端プレート１２における傾斜面１２ａの傾斜角度αも同じである。この実施例では、傾斜角度α＝１８°とした。 In FIG. 1, in the first plate 2, the inclination angles α of the inclined portion 6 and the inclined portion 8 with respect to the perpendicular line L are the same, and are 10 ° to 25 °, and the median value thereof is 17.5 °. Further, the inclination angle α of the inclined portion 10 in the second plate 3 is also 10 ° to 25 °, and the median value thereof is 17.5 °. Similarly, the inclination angle α of the inclined surface 12a on the lower end plate 12 is the same. In this example, the inclination angle α = 18 °.

そして図２に示す如く、第１プレート２と第２プレート３との各垂直部７，９，傾斜部８，１０が整合するように成形し、各部品間を圧縮状態でろう付することにより本発明のオイルクーラを得る。図２において、第１プレート２と第２プレート３との各垂直部７，９は密接して整合している。そのために、両者の垂直部は板厚分直径が異なるように、プレス成形される。即ち、第１プレート２の垂直部７の内周は、第２プレート３の垂直部９の内周より板厚分直径が大きい。また、傾斜部８，１０においても、互いに整合するそれらの下端縁どうしの直径の差が肉厚分存在する。即ち、傾斜部８の下端縁内周は、傾斜部１０の下端縁より肉厚分直径が大きい。傾斜部８，１０の上端縁においても同様である。 Then, as shown in FIG. 2, the vertical portions 7, 9 and the inclined portions 8 and 10 of the first plate 2 and the second plate 3 are formed so as to be aligned with each other, and the parts are brazed in a compressed state. Obtain the oil cooler of the present invention. In FIG. 2, the vertical portions 7 and 9 of the first plate 2 and the second plate 3 are closely aligned with each other. Therefore, the vertical portions of both are press-molded so that the diameters are different by the plate thickness. That is, the inner circumference of the vertical portion 7 of the first plate 2 has a larger diameter by the thickness of the inner circumference of the vertical portion 9 of the second plate 3. Further, also in the inclined portions 8 and 10, there is a difference in diameter between the lower end edges that match each other by the wall thickness. That is, the inner circumference of the lower end edge of the inclined portion 8 has a larger diameter than the lower end edge of the inclined portion 10 by the wall thickness. The same applies to the upper end edges of the inclined portions 8 and 10.

１ ベース平面
２ 第１プレート
３ 第２プレート
４ 冷却水流路
５ オイル流路
６ 傾斜部
７ 垂直部
８ 傾斜部 1 Base plane 2 1st plate 3 2nd plate 4 Cooling water flow path 5 Oil flow path 6 Inclined part 7 Vertical part 8 Inclined part

９ 垂直部
１０ 傾斜部
１１ 垂直部
１２ 下端プレート
１２ａ 傾斜面
１２ｂ 垂直部
１２ｃ 垂直部
１３ 上端プレート
１３ａ 傾斜部
１３ｂ 垂直部 9 Vertical part 10 Inclined part 11 Vertical part 12 Lower end plate 12a Inclined surface 12b Vertical part 12c Vertical part 13 Upper end plate 13a Inclined part 13b Vertical part

１５ ディンプル
１６ ベースプレート
１７ インナーフィン
１８ オイルパイプ
１９ 冷却水パイプ
Ｌ 垂線
ｈ１ 間隔
ｈ２ 間隔
α 傾斜角度 15 Dimple 16 Base plate 17 Inner fin 18 Oil pipe 19 Cooling water pipe L Vertical line h1 Interval h2 Interval α Tilt angle

Claims (3)

第１プレート（２）および第２プレート（３）は、それぞれのプレート（２）（３）が平坦なベース平面（１）の全周縁に全体としてその中心部から外側に向かって傾斜して立上げられた皿状に形成され、各プレート（２）（３）が間隔を有して交互に積層されており、各プレート間に冷却水流路（４）とオイル流路（５）とを交互に形成してなるケースレスオイルクーラにおいて、
第１プレート（２）は、前記ベース平面（１）の周縁から、ベース平面（１）に立てた垂線（Ｌ）に対して外側へ鋭角に傾斜して立ち上げられた傾斜部（６）と、その傾斜部（６）の縁から前記垂線（Ｌ）に略平行に立ち上げられた垂直部（７）と、その垂直部（７）の縁から前記垂線（Ｌ）に対して外側に鋭角に傾斜して立ち上げられた傾斜部（８）と、を有し、
第２プレート（３）は、前記ベース平面（１）の周縁から、前記垂線（Ｌ）に略平行に立ち上げられた垂直部（９）と、その垂直部（９）の縁から前記垂線（Ｌ）に対して外側に鋭角に傾斜して立ち上げられた傾斜部（１０）と、その傾斜部（１０）の縁から前記垂線（Ｌ）に略平行に立ち上げられた垂直部（１１）と、を有し、
それら各プレート（２）（３）の横断面における垂直部と傾斜部とが鈍角の、くの字状に曲折されてなり、
第１プレート（２）と第２プレート（３）の各垂直部（７）（９）どうし及び、傾斜部（６）（１０）どうしが整合しかつ、各接触部が互いにろう付されてなるケースレスオイルクーラ。 The first plate (2) and the second plate (3) stand on the entire peripheral edge of the flat base plane (1) where the respective plates (2) and (3) are inclined outward from the center as a whole. It is formed in a raised dish shape , and the plates (2) and (3) are alternately laminated at intervals, and the cooling water flow path (4) and the oil flow path (5) alternate between the plates. In the caseless oil cooler formed in
The first plate (2) has an inclined portion (6) raised from the peripheral edge of the base plane (1) so as to be inclined outward at an acute angle with respect to the perpendicular line (L) erected on the base plane (1). , A vertical portion (7) raised substantially parallel to the vertical line (L) from the edge of the inclined portion (6), and an acute angle outward from the edge of the vertical portion (7) with respect to the vertical line (L). It has an acute-angled portion (8), which is tilted to and raised.
The second plate (3) has a vertical portion (9) raised substantially parallel to the perpendicular line (L) from the peripheral edge of the base plane (1) and the vertical portion (9) from the edge of the vertical portion (9). An inclined portion (10) raised at an acute angle to the outside with respect to L), and a vertical portion (11) raised substantially parallel to the vertical line (L) from the edge of the inclined portion (10). And have
And the inclined portion the vertical portion of the obtuse angle of the cross section of each of these plates (2) (3), it is bent in dogleg shape,
The vertical portions (7) and (9) of the first plate (2) and the second plate (3) and the inclined portions (6) and (10) are aligned with each other, and the contact portions are brazed to each other. Caseless oil cooler. 各プレート（２）（３）の前記傾斜部（６）（１０）は、前記垂線（Ｌ）に対して、１０°〜２５°傾斜した請求項１に記載のケースレスオイルクーラ。 The caseless oil cooler according to claim 1, wherein the inclined portions (6) and (10) of the plates (2) and (3) are inclined by 10 ° to 25 ° with respect to the perpendicular line (L). 積層方向に、各傾斜部どうしと、垂直部どうしとを交互に整合して、各プレートがそれぞれ各部で三重に重なった請求項１または請求項２に記載のケースレスオイルクーラ。
The caseless oil cooler according to claim 1 or 2, wherein the inclined portions and the vertical portions are alternately aligned with each other in the stacking direction, and the plates are triple-layered at each portion.
JP2017196244A 2017-10-06 2017-10-06 Caseless oil cooler Active JP6934388B2 (en)

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WO2024122419A1 (en) * 2022-12-09 2024-06-13 株式会社ティラド Cup plate layered heat exchanger

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