JP4089804B2 - EGR cooler device - Google Patents

EGR cooler device Download PDF

Info

Publication number
JP4089804B2
JP4089804B2 JP09377099A JP9377099A JP4089804B2 JP 4089804 B2 JP4089804 B2 JP 4089804B2 JP 09377099 A JP09377099 A JP 09377099A JP 9377099 A JP9377099 A JP 9377099A JP 4089804 B2 JP4089804 B2 JP 4089804B2
Authority
JP
Japan
Prior art keywords
cooling water
tube
main body
connection port
partition plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP09377099A
Other languages
Japanese (ja)
Other versions
JP2000283666A (en
Inventor
多 幸太郎 本
原 秀 文 藤
野 幸 夫 紺
山 元 治 杉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UD Trucks Corp
Usui Co Ltd
Original Assignee
UD Trucks Corp
Usui Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UD Trucks Corp, Usui Co Ltd filed Critical UD Trucks Corp
Priority to JP09377099A priority Critical patent/JP4089804B2/en
Publication of JP2000283666A publication Critical patent/JP2000283666A/en
Application granted granted Critical
Publication of JP4089804B2 publication Critical patent/JP4089804B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、筒状体の両端部に設けられた多数の孔を有するチューブシートにチューブが固着され、その筒状体の両端部にガス回路を接続する接続金具が設けられ、外周に冷却水回路と接続する接続口が設けられているＥＧＲクーラ装置に関する。
【０００２】
【従来の技術】
ＥＧＲクーラ等に用いられる水冷多管式クーラは知られている。
【０００３】
しかしながら、上記の技術において、クーラ装置は排ガス通路となるチューブ内に冷却による排気凝縮水が生じるため、その排出のために傾斜して取り付けることが必要である。
【０００４】
一方で、冷却水中のエアを抜くためにクーラ装置のチューブシートの付近にエア抜き穴が設けられているが、筒状体にエア抜き穴を蝋付けするために筒状体のエア抜き穴にはバーリングが施されており、そのためにチューブシートとエア抜き穴又は水抜き穴との間には加工のために多少の距離が必要である。
そのため、クーラ装置の傾斜によって、隅部に断面形状が３角形のエア溜りが出来、クーラ入口の排ガス温度はかなり高温度であるため、エア溜りに触れるチューブが冷却されないで破損すると言う問題が考えられる。
【０００５】
【発明が解決しようとする課題】
本発明は上述した従来技術の問題点に鑑みて提案されたものであり、エア抜きで排出されないエアがチューブシートの隅部にあってもチューブの破損がないＥＧＲクーラ装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明によれば、筒状に形成された本体（１）の両端部にチューブシート（１５、１５）が固着され、その両チューブシート（１５、１５）間には複数のチューブ（２）が固着され、さらにそれらの両端にはＥＧＲ回路を接続する接続金具（３、３）が設けられ、本体（１）の外周部には一端側の下部に冷却水入口の接続口（１０）が、他端側の上部に冷却水出口の接続口（１２）がそれぞれ設けられているＥＧＲクーラ装置において、本体（１）の外周部には一端側の下部に冷却水入口の接続口（１０）が、他端側の上部に冷却水出口の接続口（１２）がそれぞれ本体（１）の鉛直方向に対して傾斜した位置に設けられ、前記入口の接続口（１０）の上部側にエア抜き口（１４）がＥＧＲクーラ本体（１）の鉛直方向上部に設けられ、前記両チューブシート（１５、１５）間の上部にはチューブ（２）及び仕切板（５、５）が取り付けられていない領域を有し、前記本体（１）に内接する半円形状に形成されてチューブ（２）の挿入される多数の穴を有する複数の仕切板（５、５）が冷却水入口側の下部と出口側の上部とに対向するように互い違いに取り付けられており、該仕切板（５）には直線部（５ａ）と平行な切欠部（７）を有し、該仕切板の切欠部（７）と本体（１）内側とによる上部の空間（６）がエアの通路を形成し、下部の空間（８）が冷却水の淀みを解消する通路を形成している。
【０００９】
本発明では、筒状体の両端部に設けられた多数の孔を有するチューブシートにチューブが固着され、その筒状体の両端部にガス回路を接続する接続金具が設けられ、外周に冷却水回路と接続する接続口が設けられているＥＧＲクーラ装置において、チューブシートの上部には、チューブが取り付けられていない領域が存在している。
ＥＧＲクーラ本体内部で溜まったエアにチューブが接触すると、当該チューブは破損すると考えられる。ここで、エアに接触する可能性があるチューブは、チューブシートの上部に取り付けられたチューブのみである。従って、チューブシートの上部にチューブを設けなければ、本体内部に溜まったエアとの接触によるチューブの破損が防止されるのである。
【００１１】
【発明の実施の形態】
図１は本発明にかかるＥＧＲ装置の部分断面側面図を示し、筒状に形成された本体１の両端部にはチューブシート１５(図３参照)が固着されており、そのチューブシート１５には複数のチューブ２が固着されている。
【００１２】
また、本体１の両端部にはＥＧＲ回路に接続されるフランジ４を有する接続金具３、３が取り付けられ、本体１の外周の一端には下部に冷却水入口の接続口１０と他端には上部に冷却水出口の接続口１２とが設けられ、接続口１０の反対側(上部)にはエア抜き口１４が取り付けられている。
【００１３】
そして、本体１の内側には、図２を参照して、半円形状に形成され、チューブ２が貫通する孔２ａとその直線部５ａと平行な切欠部７とを有する仕切板５が、冷却水入口側は下部に、出口側は上部に直線部５ａが対向するように互い違いに取り付けられている。
【００１４】
また、仕切板５の切欠部７と本体１の内側との間に生じる上部の空間６は本体上部に溜まるエアの通路を形成し、下部の空間８は冷却水のよどみを解消する通路となる。
【００１５】
なお、本実施形態は仕切板が２枚の例を示しているが、これに限定されるものでなく、クーラの長さにより冷却水流がチューブ２を均等に冷却するよう配置すればよい。
【００１６】
以下、作用について図１および図３を参照して説明する。ＥＧＲである排ガスは図における右側の接続金具３に連結された図示しないＥＧＲ回路を介してＥＧＲクーラに流入する。また、冷却水ｗは本体１の接続口１０に連結された図示しない冷却水回路から本体内に流入し、仕切板５、５に案内されて蛇行しながら淀みなく流過して接続口１２から図示しない冷却水回路に流出する。
【００１７】
この際、仕切板５により案内されるため冷却水は一箇所に淀むことなく均一にチューブ２の周囲を通過するので、冷却効率がよい。
【００１８】
そして仕切板５の切欠部７が、上部に来る場合はエアの通路となって、例えば、図３に示すようにエア抜き１４側が高くなるよう傾斜して取り付けられれば、エア抜き口１４で隅に残ったエア１７はもっとも高い位置にあるチューブ２よりも高い位置にあり、チューブ２は冷却水Ｗ内に位置しているので破損することがない。
【００１９】
図３に関連して、より詳細に説明する。図示の実施形態においては、チューブシート１５の上部には、チューブ２が設けられていない。図３で点線で示す様な仮想のチューブ２Ｇを設けたとすれば、図３から明らかな様に、当該仮想チューブ２Ｇは、チューブシート１５との接続箇所近傍で、本体内に残存したエア１７と接触してしまう。そして、仮想チューブ２Ｇにおいて、エア１７と接触した箇所は冷却水とは接触することが出来ず、高熱のＥＧＲガスに曝されるままとなり、いずれは破損してしまうと考えられる。
ここで、本体内に残存したエア１７（図３ではハッチングを付して示す）と接触する可能性があるチューブ（図３で示す仮想チューブ２Ｇの様なチューブ）は、チューブシート１５の上部の領域に接続されたチューブである。従って、チューブシート１５の上部の領域にチューブを接続しなければ、本体内に残存したエア１７と接触してチューブ２が破損されることが防止される。
換言すれば、チューブシート１５の上部において、チューブ２を接続しない領域は、本体内にエア（１７）が残存する領域の大きさにより定まり、本体内にエア（１７）が残存する領域は、エア抜き１４の位置や、ＥＧＲクーラの傾斜角度等から決定される。
なお、図３では仕切板５、バッフルが設けられているが、これを省略することも可能である。
【００２０】
また、下側に取付られた仕切板５の切欠部７と本体１との間に形成された空間８は本体１の冷却水流れの淀みを防止する効果がある。
【００２１】
また、図４および図５は本発明の別の実施形態を示し、冷却水の出入り口である接続口１０、１２をＥＧＲクーラ本体の鉛直方向について、多少傾斜した位置にしたこと以外第１実施形態と同じであり、エア抜き１４は残りエアを出来るだけ少なくする位置（ＥＧＲクーラ本体の鉛直方向上部の位置）に設けられているので、冷却水の接続口１０、１２を傾斜させることでレイアウトの自由度が向上する効果が期待できる。
【００２２】
【発明の効果】
本発明は以上の通り構成されており、仕切板を設けることにより冷却水の流れがスムーズになって冷却効率が向上し、耐振性が強化されると共に、仕切板に切欠部を設けることでエア抜きが確実となり、さらに冷却水の淀みが減少するため、クーラ装置の性能と共に耐久性が向上する。
【図面の簡単な説明】
【図１】本発明の一実施形態を示す部分断面側面図。
【図２】図１のＡ−Ａ断面図。
【図３】図１の作用効果を説明する図。
【図４】本発明の別の実施形態を示す図。
【図５】図４のＢ矢視図。
【符号の説明】
１…本体
２…チューブ
３…接続金具
４…フランジ
５…仕切板
７…切欠部
１０、１２…接続口
１４…エア抜き口[0001]
BACKGROUND OF THE INVENTION
In the present invention, a tube is fixed to a tube sheet having a large number of holes provided at both ends of a cylindrical body, and a connection fitting for connecting a gas circuit is provided at both ends of the cylindrical body. The present invention relates to an EGR cooler device provided with a connection port for connection with a circuit.
[0002]
[Prior art]
Water-cooled multitubular coolers used for EGR coolers and the like are known.
[0003]
However, in the above technique, the cooler device generates exhaust condensed water by cooling in a tube serving as an exhaust gas passage, and therefore it is necessary to attach the cooler device at an inclination for the discharge.
[0004]
On the other hand, an air vent hole is provided in the vicinity of the tube sheet of the cooler device in order to vent air from the cooling water. However, in order to braze the air vent hole to the tubular body, the air vent hole of the tubular body is provided. Is subjected to burring, and therefore, a certain distance is required for processing between the tube sheet and the air vent hole or water drain hole.
For this reason, an air reservoir having a triangular cross-section is formed at the corner due to the inclination of the cooler device, and the exhaust gas temperature at the inlet of the cooler is quite high. It is done.
[0005]
[Problems to be solved by the invention]
The present invention has been proposed in view of the above-described problems of the prior art, and an object of the present invention is to provide an EGR cooler apparatus in which the tube is not damaged even if the air that is not discharged by air bleeding is present at the corner of the tube sheet. It is said.
[0006]
[Means for Solving the Problems]
According to the present invention, the tube sheets (15, 15) are fixed to both ends of the main body (1) formed in a cylindrical shape, and a plurality of tubes (2) are interposed between the tube sheets (15, 15). Further, connecting metal fittings (3, 3) for connecting the EGR circuit are provided at both ends thereof, and a connection port (10) for the cooling water inlet is provided at the lower part on one end side on the outer periphery of the main body (1). In the EGR cooler device in which the cooling water outlet connection port (12) is provided in the upper part on the other end side, the outer peripheral part of the main body (1) has the cooling water inlet connection port (10) in the lower part on the one end side. The cooling water outlet connection port (12) is provided at a position inclined with respect to the vertical direction of the main body (1) at the upper end of the other end side, and the air vent port is formed above the inlet connection port (10). (14) is provided at the upper part in the vertical direction of the EGR cooler body (1), The upper part between the tube sheets (15, 15) has a region where the tube (2) and the partition plates (5, 5) are not attached, and is formed in a semicircular shape inscribed in the main body (1). A plurality of partition plates (5, 5) having a large number of holes to be inserted in (2) are alternately attached so as to face the lower portion on the cooling water inlet side and the upper portion on the outlet side. 5) has a notch (7) parallel to the straight part (5a), and the upper space (6) formed by the notch (7) of the partition plate and the inside of the main body (1) forms an air passage. The lower space (8) forms a passage for eliminating stagnation of the cooling water.
[0009]
In the present invention, a tube is fixed to a tube sheet having a large number of holes provided at both ends of a cylindrical body, connecting fittings for connecting a gas circuit are provided at both ends of the cylindrical body, and cooling water is provided on the outer periphery. In an EGR cooler apparatus provided with a connection port for connection with a circuit, an area where a tube is not attached exists at the upper part of the tube sheet.
It is considered that when the tube comes into contact with the air accumulated inside the EGR cooler body, the tube is damaged. Here, the only tube that may come into contact with air is the tube attached to the top of the tube sheet. Therefore, if a tube is not provided on the upper portion of the tube sheet, the tube is prevented from being damaged due to contact with air accumulated in the main body.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a partial cross-sectional side view of an EGR device according to the present invention, and tube sheets 15 (see FIG. 3) are fixed to both ends of a main body 1 formed in a cylindrical shape. A plurality of tubes 2 are fixed.
[0012]
Further, connecting metal fittings 3 and 3 having flanges 4 connected to the EGR circuit are attached to both ends of the main body 1. One end of the outer periphery of the main body 1 is connected to the lower portion of the connection port 10 of the cooling water inlet and the other end. A cooling water outlet connection port 12 is provided in the upper part, and an air vent port 14 is attached to the opposite side (upper part) of the connection port 10.
[0013]
2, a partition plate 5 formed in a semicircular shape and having a hole 2a through which the tube 2 passes and a notch portion 7 parallel to the straight portion 5a is cooled inside the main body 1. The water inlet side is attached to the lower part, and the outlet side is attached to the upper part alternately so that the straight part 5a faces the upper part.
[0014]
The upper space 6 formed between the notch 7 of the partition plate 5 and the inside of the main body 1 forms a passage for air accumulated in the upper portion of the main body, and the lower space 8 becomes a passage for eliminating stagnation of cooling water. .
[0015]
In addition, although this embodiment has shown the example with two partition plates, it is not limited to this, What is necessary is just to arrange | position so that a cooling water flow may cool the tube 2 equally with the length of a cooler.
[0016]
Hereinafter, the operation will be described with reference to FIGS. 1 and 3. The exhaust gas which is EGR flows into the EGR cooler through an EGR circuit (not shown) connected to the right side fitting 3 in the drawing. Further, the cooling water w flows into the main body from a cooling water circuit (not shown) connected to the connection port 10 of the main body 1, is guided by the partition plates 5 and 5, and flows through without any stagnation from the connection port 12. It flows out to a cooling water circuit (not shown).
[0017]
At this time, since the cooling water is guided by the partition plate 5 and uniformly passes around the tube 2 without stagnation in one place, the cooling efficiency is good.
[0018]
When the cutout portion 7 of the partition plate 5 comes to the upper part, it becomes an air passage. For example, if the notch portion 7 is inclined so that the air vent 14 side is raised as shown in FIG. The remaining air 17 is at a position higher than the tube 2 at the highest position, and the tube 2 is located in the cooling water W, so that it is not damaged.
[0019]
This will be described in more detail with reference to FIG. In the illustrated embodiment, the tube 2 is not provided on the upper portion of the tube sheet 15. Assuming that a virtual tube 2G as shown by a dotted line in FIG. 3 is provided, as is apparent from FIG. 3, the virtual tube 2G is connected to the air 17 remaining in the main body in the vicinity of the connection point with the tube sheet 15. Contact. And in the virtual tube 2G, the part which contacted the air 17 cannot be contacted with the cooling water, but remains exposed to the high-heat EGR gas, and it is considered that eventually it will be damaged.
Here, a tube (such as the virtual tube 2G shown in FIG. 3) that may come into contact with the air 17 remaining in the main body (shown with hatching in FIG. 3) is placed on the upper portion of the tube sheet 15. A tube connected to a region. Therefore, if the tube is not connected to the upper region of the tube sheet 15, the tube 2 is prevented from being damaged due to contact with the air 17 remaining in the main body.
In other words, in the upper part of the tube sheet 15, the area where the tube 2 is not connected is determined by the size of the area where the air (17) remains in the main body, and the area where the air (17) remains in the main body It is determined from the position of the punch 14 and the inclination angle of the EGR cooler.
In addition, in FIG. 3, although the partition plate 5 and the baffle are provided, this is also omissible.
[0020]
Moreover, the space 8 formed between the notch 7 of the partition plate 5 attached to the lower side and the main body 1 has an effect of preventing the cooling flow of the main body 1 from being stagnation.
[0021]
4 and 5 show another embodiment of the present invention. The first embodiment except that the connection ports 10 and 12 which are the entrance and exit of the cooling water are slightly inclined with respect to the vertical direction of the EGR cooler body. Since the air vent 14 is provided at a position where the remaining air is reduced as much as possible (a position at the upper part in the vertical direction of the EGR cooler main body), the layout of the layout can be improved by inclining the cooling water connection ports 10 and 12. The effect of improving the degree of freedom can be expected.
[0022]
【The invention's effect】
The present invention is configured as described above. By providing the partition plate, the flow of the cooling water becomes smooth, the cooling efficiency is improved, the vibration resistance is strengthened, and the partition plate is provided with a notch to provide air. Since the removal is sure and the stagnation of the cooling water is reduced, the durability of the cooler device is improved as well as the performance.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional side view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a diagram for explaining the effect of FIG. 1;
FIG. 4 is a diagram showing another embodiment of the present invention.
FIG. 5 is a view taken in the direction of arrow B in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Tube 3 ... Connection metal fitting 4 ... Flange 5 ... Partition plate 7 ... Notch 10, 12 ... Connection port 14 ... Air vent

Claims (1)

筒状に形成された本体（１）の両端部にチューブシート（１５、１５）が固着され、その両チューブシート（１５、１５）間には複数のチューブ（２）が固着され、さらにそれらの両端にはＥＧＲ回路を接続する接続金具（３、３）が設けられ、本体（１）の外周部には一端側の下部に冷却水入口の接続口（１０）が、他端側の上部に冷却水出口の接続口（１２）がそれぞれ設けられているＥＧＲクーラ装置において、本体（１）の外周部には一端側の下部に冷却水入口の接続口（１０）が、他端側の上部に冷却水出口の接続口（１２）がそれぞれ本体（１）の鉛直方向に対して傾斜した位置に設けられ、前記入口の接続口（１０）の上部側にエア抜き口（１４）がＥＧＲクーラ本体（１）の鉛直方向上部に設けられ、前記両チューブシート（１５、１５）間の上部にはチューブ（２）及び仕切板（５、５）が取り付けられていない領域を有し、前記本体（１）に内接する半円形状に形成されてチューブ（２）の挿入される多数の穴を有する複数の仕切板（５、５）が冷却水入口側の下部と出口側の上部とに対向するように互い違いに取り付けられており、該仕切板（５）には直線部（５ａ）と平行な切欠部（７）を有し、該仕切板の切欠部（７）と本体（１）内側とによる上部の空間（６）がエアの通路を形成し、下部の空間（８）が冷却水の淀みを解消する通路を形成していることを特徴とするＥＧＲクーラ装置。Tube sheets (15, 15) are fixed to both ends of the body (1) formed in a cylindrical shape, and a plurality of tubes (2) are fixed between the tube sheets (15, 15). Connecting metal fittings (3, 3) for connecting the EGR circuit are provided at both ends, the outer peripheral portion of the main body (1) has a lower end on one end side and a connection port (10) for a cooling water inlet on the upper end on the other end side. In the EGR cooler device provided with a cooling water outlet connection port (12), the outer peripheral part of the main body (1) has a cooling water inlet connection port (10) on the lower end on one end side and an upper portion on the other end side. The cooling water outlet connection port (12) is provided at a position inclined with respect to the vertical direction of the main body (1), and an air vent (14) is provided on the upper side of the inlet connection port (10). Provided on the upper part of the body (1) in the vertical direction, 15, 15) has an area where the tube (2) and the partition plate (5, 5) are not attached, and is formed in a semicircular shape inscribed in the main body (1), so that the tube (2) A plurality of partition plates (5, 5) having a large number of holes to be inserted are alternately attached so as to face the lower portion on the cooling water inlet side and the upper portion on the outlet side, and are attached to the partition plate (5). Has a notch (7) parallel to the straight line part (5a), and the upper space (6) between the notch (7) of the partition plate and the inside of the main body (1) forms an air passage, and the lower part The EGR cooler device characterized in that the space (8) forms a passage for eliminating stagnation of the cooling water.
JP09377099A 1999-03-31 1999-03-31 EGR cooler device Expired - Fee Related JP4089804B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09377099A JP4089804B2 (en) 1999-03-31 1999-03-31 EGR cooler device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09377099A JP4089804B2 (en) 1999-03-31 1999-03-31 EGR cooler device

Publications (2)

Publication Number Publication Date
JP2000283666A JP2000283666A (en) 2000-10-13
JP4089804B2 true JP4089804B2 (en) 2008-05-28

Family

ID=14091674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09377099A Expired - Fee Related JP4089804B2 (en) 1999-03-31 1999-03-31 EGR cooler device

Country Status (1)

Country Link
JP (1) JP4089804B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003262363A (en) * 2002-03-11 2003-09-19 Aisin Seiki Co Ltd Engine-driven air conditioning system
WO2004031565A1 (en) * 2002-10-02 2004-04-15 Hino Motors, Ltd. Egr cooler
JP4336711B2 (en) * 2006-12-14 2009-09-30 株式会社小松製作所 EGR cooler
JP2007085361A (en) * 2006-12-28 2007-04-05 Komatsu Ltd Egr cooler
ES2394406B1 (en) 2009-11-18 2013-10-23 Valeo Térmico, S.A. HEAT EXCHANGER FOR GASES, ESPECIALLY EXHAUST GASES FROM AN ENGINE.
ES2450791B1 (en) 2012-09-25 2015-01-16 Valeo Térmico, S. A. Heat exchanger for gases, especially the exhaust gases of an engine
CN105841543B (en) * 2016-05-31 2018-09-21 郑州大学 Tilt the oblique stream heat exchanger of baffling grating
CN107202037A (en) * 2017-07-19 2017-09-26 陈宗良 A kind of centrifugal compressed oil cooler

Also Published As

Publication number Publication date
JP2000283666A (en) 2000-10-13

Similar Documents

Publication Publication Date Title
US6401809B1 (en) Continuous combination fin for a heat exchanger
US20050061489A1 (en) Integrated multi-function return tube for combo heat exchangers
JP4089804B2 (en) EGR cooler device
JPH0763492A (en) Heat exchanger
JP3719578B2 (en) Exhaust cooler structure
US4102152A (en) Heat exchange device for air conditioners
US20160363380A1 (en) Heat exchanger
JPH05133687A (en) Air-cooled oil free rotary compressor
RU2004108664A (en) ADVANCED RADIATOR
JP2004124809A (en) Exhaust gas recirculation cooler
JP4293323B2 (en) Exhaust gas cooler structure
JPH0650675A (en) Heat exchanger
JPH09138084A (en) Heat exchanger
JP2001304049A (en) Multiple pipe type egr gas cooling device
JP2004116495A (en) Egr gas cooling system
JP2002195774A (en) Air heat exchanger
US6237680B1 (en) Laminar flow radiator for motor vehicle
JP2019132455A (en) Heat exchanger
JPH028692A (en) Heat exchanger
KR0165069B1 (en) Flat tube type heat exchanger
JP5094261B2 (en) Condenser
JPS58158497A (en) Finned-tube type heat exchanger
JPH11337275A (en) Shell and tube type condenser
WO2022177240A1 (en) Heat exchanger
JPH066987U (en) Heat exchanger

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041007

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070723

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070801

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070927

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20071102

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071225

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071227

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20080204

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080220

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080220

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110307

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110307

Year of fee payment: 3

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110307

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110307

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140307

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees