JP2691493B2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JP2691493B2 JP2691493B2 JP4181633A JP18163392A JP2691493B2 JP 2691493 B2 JP2691493 B2 JP 2691493B2 JP 4181633 A JP4181633 A JP 4181633A JP 18163392 A JP18163392 A JP 18163392A JP 2691493 B2 JP2691493 B2 JP 2691493B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- boss
- flat tube
- casing
- boss portion
- 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
Links
Classifications
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多数のプレートから成
る多板式の熱交換器エレメントをケーシング内に収容し
て構成された熱交換器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger constructed by housing a multi-plate type heat exchanger element composed of a large number of plates in a casing.
【０００２】[0002]
【従来技術】例えば実開昭57−190279号公報にこのよう
な熱交換器が開示されているが、この種熱交換器におけ
る前記熱交換器エレメント（コア）は、同公報にも示さ
れているように、対向する２枚のプレートにより形成さ
れた扁平管を互いに間隔を存して複数個積み重ね、両端
部に各扁平管を連通させるヘッダ部をそれぞれ設け、各
ヘッダ部の一端部にそれぞれ流体導入導出用のボス部を
設けて構成されている。2. Description of the Related Art For example, Japanese Utility Model Laid-Open No. 57-190279 discloses such a heat exchanger, and the heat exchanger element (core) in this type of heat exchanger is also disclosed in the same publication. As shown in the figure, a plurality of flat tubes formed by two plates facing each other are stacked at a distance from each other, and header portions for communicating the flat tubes are provided at both ends, and one end portion of each header portion is provided. It is configured by providing a boss portion for introducing and extracting a fluid.
【０００３】上記ボス部はケーシングの壁部を貫通して
外部に突出しており、これらのボス部を通じて前記扁平
管内に或る流体が流される。一方、ケーシング内には他
の流体が流され、この流体が各扁平管のまわりを流動す
ることにより、両流体間に熱交換が行われる。The boss portion penetrates the wall portion of the casing and projects to the outside, and a certain fluid is flown into the flat tube through these boss portions. On the other hand, another fluid is caused to flow in the casing, and this fluid flows around each flat tube, whereby heat exchange is performed between the two fluids.
【０００４】前記熱交換器エレメントは多数のプレート
その他を多数の箇所において接合しなけばならないの
で、各接合部にろう材を挟んで該エレメントを組立て、
全体を炉内で加熱してろう材を溶かすことにより接合が
行われ、この時前記ボス部も最も外側の扁平管の外面に
ろう付けされる。Since the heat exchanger element has to join a large number of plates and the like at a large number of places, the brazing material is sandwiched between the joints to assemble the element.
The whole is heated in a furnace to melt the brazing filler metal, whereby the boss portion is also brazed to the outer surface of the outermost flat tube.
【０００５】また、従来のかかる熱交換器エレメント
は、該エレメントの最も外側に扁平管を配し、その内方
に所定の間隔で次の扁平管を順次配して構成されてい
た。Further, in the conventional heat exchanger element, a flat tube is arranged on the outermost side of the element, and the following flat tubes are sequentially arranged inside the flat tube at predetermined intervals.
【０００６】図４は上記したような従来の熱交換器にお
けるボス部近傍の状態を示す。01は熱交換器エレメン
ト、02はケーシング壁である。03ａは最上段の扁平管
で、その下に間隔を隔てて第２段の扁平管03ｂが配さ
れ、さらにその下に間隔を隔てて第３段の扁平管03ｃが
配設されている。扁平管03ａ，03ｂ、03ｃはヘッダ部04
により互いに連通し、扁平管03ａの上面にボス部05がろ
う付け06されている。ボス部05はケーシング壁02を貫通
し、かつケーシング壁02に溶接07されている。FIG. 4 shows a state near the boss portion in the conventional heat exchanger as described above. 01 is a heat exchanger element and 02 is a casing wall. Reference numeral 03a denotes an uppermost flat tube, a second flat tube 03b is arranged below the flat tube 03b, and a third flat tube 03c is further arranged below the flat tube 03b. The flat tubes 03a, 03b, 03c are header parts 04
The bosses 05 are brazed 06 to the upper surface of the flat tube 03a by communicating with each other. The boss portion 05 penetrates the casing wall 02 and is welded 07 to the casing wall 02.
【０００７】[0007]
【解決しようとする課題】図４から分るように、従来の
熱交換器エレメント01は、最上段の扁平管03ａがエレメ
ント01の最上部に設けられているので、該エレメントを
ケーシング内に設置した時に扁平管03ａがケーシング壁
02に接近する。この結果、ボス部05とケーシング壁02の
溶接07は、ボス部05と扁平管03ａのろう付け部06の直上
極めて短かい距離の所で行われることとなり、この溶接
の熱によりろう付け部06が再加熱されてろう付け強度の
低下を招いたり、また溶接時の歪みによりろう付け部の
剥離を起したりして、熱交換器としての耐久性、気密性
が損なわれてしまうことがあった。As can be seen from FIG. 4, in the conventional heat exchanger element 01, the flat tube 03a at the uppermost stage is provided at the uppermost portion of the element 01, so that the element is installed in the casing. When the flat tube 03a
Approach 02. As a result, the welding 07 between the boss portion 05 and the casing wall 02 is performed at an extremely short distance directly above the boss portion 05 and the brazing portion 06 of the flat tube 03a, and the heat of this welding causes the brazing portion 06 to be welded. May be reheated to cause a decrease in brazing strength, or the distortion during welding may cause peeling of the brazing part, impairing the durability and airtightness of the heat exchanger. It was
【０００８】[0008]
【課題を解決するための手段および作用】本発明はこの
ような事情に鑑みてなされたものであり、本発明におい
ては、対向する２枚のプレートにより形成された扁平管
を互いに間隔を存して複数個積み重ね、両端部に各扁平
管を連通させるヘッダ部をそれぞれ設け、各ヘッダ部の
一端部にそれぞれ流体導入、導出用のボス部をろう付け
して構成した熱交換器エレメントを、ケーシング内に収
容し、前記ボス部を該ケーシングの壁部を貫通させると
ともに該壁部に溶接して成る熱交換器において、前記熱
交換器エレメントの前記ボス部側最外方の扁平管を、該
熱交換器エレメントの外側面から前記扁平管どうしの間
隔にほぼ等しい間隔だけ内方にずらして設け、この最外
方の扁平管に前記ボス部をろう付けするとともに、該ボ
ス部を前記熱交換器エレメントの外側面を超えて延出さ
せ、前記ろう付けされた部分から離隔した位置において
前記ケーシングの壁部に溶接する。The present invention has been made in view of such circumstances, and in the present invention, the flat tubes formed by two plates facing each other are spaced from each other. A heat exchanger element that is constructed by stacking a plurality of headers, providing headers at both ends for communicating the flat tubes, and brazing a boss for fluid introduction and derivation at one end of each header. A heat exchanger that is housed inside and that has the boss portion penetrating the wall portion of the casing and is welded to the wall portion, wherein the outermost flat tube of the heat exchanger element on the boss portion side is The heat exchanger element is provided so as to be displaced inward from the outer surface of the flat tube by a distance substantially equal to the distance between the flat tubes, and the outermost flat tube is brazed with the boss portion, and the boss portion is heat-exchanged with the boss portion. Beyond the outer surface of the element is extended, it is welded to the wall of the casing in a position spaced from the brazed portion.
【０００９】本発明によれば、ボス部の扁平管に対する
ろう付け部とケーシング壁部に対する溶接部との間の距
離が長くなるので、溶接による熱および歪みの影響がろ
う付け部に及び難く、従って溶接に際してろう付け部が
再加熱されてろう付け強度が低下したり、ろう付け部が
剥離したりすることがない。According to the present invention, the distance between the brazed portion of the boss portion to the flat tube and the welded portion to the casing wall portion becomes long, so that the brazing portion is less likely to be affected by heat and strain due to welding. Therefore, during welding, the brazing portion is not reheated and the brazing strength is not reduced, and the brazing portion does not peel off.
【００１０】[0010]
【実 施 例】図１は本発明による熱交換器１のケーシ
ング２を縦断して内部の熱交換器エレメント３を示した
図面である。EXAMPLE FIG. 1 is a drawing showing a heat exchanger element 3 inside by longitudinally cutting a casing 2 of a heat exchanger 1 according to the present invention.
【００１１】熱交換器エレメント３は多数のプレート４
を積層して構成されているが、これらのプレート４は、
２枚ずつ組合わされて、それぞれ周辺を封止された扁平
管５を形成している。そしてこれらの扁平管５が互いに
所定の間隔ｄで上下に配列され、各間隔部分にはその上
下の扁平管５に接する伝熱フィン６が設けられている。
最上段の扁平管５1 の上面にも同様なフィン６ａが設け
られており、その上方に板７が張設され、この板７によ
って熱交換器エレメント３の上面が形成されている。The heat exchanger element 3 comprises a number of plates 4
These plates 4 are formed by stacking
Two flat tubes 5 are combined to form a flat tube 5 with its periphery sealed. These flat tubes 5 are vertically arranged at a predetermined interval d, and heat transfer fins 6 that are in contact with the upper and lower flat tubes 5 are provided at the respective intervals.
And similar fins 6a to the flat tube 5 1 of the upper surface of the uppermost is provided, the plate 7 is stretched thereover, the upper surface of the heat exchanger elements 3 are formed by the plate 7.
【００１２】各扁平管５は両端部に上下方向に設けられ
たヘッダ部８ａ，８ｂにより互いに連通している。最上
段の扁平管５1 の上面には、前記ヘッダ部８ａ，８ｂの
直上位置にそれぞれボス部９ａ，９ｂが設けられ、該ボ
ス部９ａ，９ｂは前記板７およびケーシング２の上壁２
ａを貫通してケーシング２の上面に突出している。ボス
部９ａ，９ｂはそれぞれろう付け部10において扁平管５
1 の上面にろう付けされ、溶接部11においてケーシング
２の上壁２ａに溶接されている。The flat tubes 5 are communicated with each other by header portions 8a and 8b provided at both ends in the vertical direction. The flat tube 5 1 of the upper surface of the uppermost, said header portion 8a, respectively boss 9a to a position directly above 8b, 9b are provided, the boss portion 9a, 9b is the plate 7 and on the casing 2 wall 2
It penetrates through a and projects to the upper surface of the casing 2. The bosses 9a and 9b are connected to the flat tube 5 at the brazing part 10, respectively.
It is brazed to the upper surface of 1 and is welded to the upper wall 2a of the casing 2 at the weld 11.
【００１３】熱交換器エレメント３には一方のボス部例
えばボス部９ａを通じて第１の流体が流入し、ヘッダ部
８ａにより各扁平管５に分配されてこれらの扁平管５内
をヘッダ部８ｂへ流れ、ボス部９ｂから流出する。一
方、ケーシング２内には第２の流体が導入され、この流
体は熱交換器エレメント３のまわり、特に各扁平管５の
間の前記間隔部分および前記板７と扁平管５1 との間の
間隔部分を流れる。そしてこれらの第１、第２の流体間
にフィン６およびプレート４を介して熱の授与が行われ
る。The first fluid flows into the heat exchanger element 3 through one boss portion, for example, the boss portion 9a, and is distributed to each flat pipe 5 by the header portion 8a, and the inside of these flat pipes 5 is transferred to the header portion 8b. Flow out of the boss 9b. On the other hand, a second fluid is introduced into the casing 2, which fluid surrounds the heat exchanger elements 3, in particular the gaps between the flat tubes 5 and between the plates 7 and the flat tubes 5 1 . Flow through the gap. Then, heat is given between the first and second fluids via the fins 6 and the plate 4.
【００１４】上記熱交換器エレメント３においては、最
上段の扁平管５1 が、板７によって形成された熱交換器
エレメント３の上面から、各扁平管５間の間隔ｄにほぼ
等しい間隔だけ下方にずらした位置に設けられている。
図２は、この構造を前述の図４に示した従来構造と対比
するために、図１のボス部９ａ部分を拡大して示したも
のである。両図を対比すれば一層よく分るように、本実
施例は図４における最上段の扁平管03ａを廃し、この代
りに板７を設けたものに相当する。In the heat exchanger element 3, the uppermost flat tube 5 1 is located below the upper surface of the heat exchanger element 3 formed by the plate 7 by a distance substantially equal to the distance d between the flat tubes 5. It is provided in a shifted position.
FIG. 2 is an enlarged view of the boss portion 9a of FIG. 1 in order to compare this structure with the conventional structure shown in FIG. As can be seen more clearly by comparing both figures, this embodiment corresponds to the one in which the uppermost flat tube 03a in FIG. 4 is eliminated and a plate 7 is provided instead of this.
【００１５】この結果、本実施例における最上段の扁平
管５1 からケーシング上壁２ａまでの距離すなわちボス
部９ａのろう付け部10から溶接部11までの長さＤ1 は、
図４の従来例における最上段の扁平管03ａからケーシン
グ壁02までの距離すなわちボス部05のろう付け部06から
溶接部07までの長さＤ2 よりもはるかに長くなり、従っ
て本実施例においては溶接部11における溶接がろう付け
部10に前述したような悪影響を及ぼすことはない。As a result, the distance from the uppermost flat tube 5 1 to the casing upper wall 2a in this embodiment, that is, the length D 1 from the brazing portion 10 of the boss portion 9a to the welding portion 11 is
The distance from the uppermost flat tube 03a to the casing wall 02, that is, the length D 2 from the brazing portion 06 to the welding portion 07 of the boss portion 05 in the conventional example of FIG. Does not adversely affect the brazed portion 10 by the welding in the welded portion 11.
【００１６】なお、本実施例では扁平管の枚数が１枚減
少することとなるが、扁平管５1 の上面にフィン６ａが
設けられているので、フィンの全伝熱面積は減少してお
らず、また熱交換器エレメント３内における流速は流路
断面積が減少した分だけ速くなるので効換熱量は従来の
ものとほとんど変らない。In this embodiment, the number of flat tubes is reduced by one , but since the fins 6a are provided on the upper surface of the flat tube 51, the total heat transfer area of the fins should be reduced. In addition, since the flow velocity in the heat exchanger element 3 is increased by the decrease in the flow passage cross-sectional area, the heat of exchange heat is almost the same as the conventional one.
【００１７】図３は前記ボス部およびヘッダ部の構造を
ボス部９ｂ側についてさらに詳細に示した断面図であ
る。扁平管５1 は上下のプレート４，４を周辺４ａにお
いて互いにかしめて構成され、端部において上下のプレ
ート４にそれぞれ孔12ａ、12ｂが形成されている。下方
のプレート４には孔12ｂを包囲して筒状のヘッダ部片13
がろう付けされ、該ヘッダ部片13の他端は次の扁平管５
の上方のプレート４に設けられた同様な孔のまわりにろ
う付けされている。そして同様な各扁平管５をこのよう
なヘッダ部片13により順次接続することにより前記ヘッ
ダ部８ｂが構成されている。FIG. 3 is a sectional view showing the structures of the boss portion and the header portion in more detail on the boss portion 9b side. The flat tube 5 1 is formed by crimping the upper and lower plates 4 and 4 at their peripheries 4a, and holes 12a and 12b are formed in the upper and lower plates 4 at their ends. The lower plate 4 surrounds the hole 12b and surrounds the cylindrical header part 13
Is brazed and the other end of the header piece 13 is connected to the next flat tube 5
Is brazed around a similar hole in the plate 4 above. The header portions 8b are formed by sequentially connecting the similar flat tubes 5 with such header portion pieces 13.
【００１８】管状部片から成るボス部９ｂは、下端のフ
ランジ部分９ｃを孔12ａの周囲において扁平管５1 にろ
う付けされ、前述のように板７およびケーシング壁２ａ
を貫通して上方へ延出している。そして上方のフランジ
部９ｄの上面にケーシング壁２ａが溶着されている。た
だしボス部９ｂは板７に設けられた孔を単に通過するだ
けで、ボス部９ｂと板７とはろう付けされていない。The boss portion 9b made of a tubular piece is brazed to the flat tube 5 1 around the hole 12a at the lower end flange portion 9c, and as described above, the plate 7 and the casing wall 2a.
Penetrates through and extends upward. The casing wall 2a is welded to the upper surface of the upper flange portion 9d. However, the boss portion 9b simply passes through the hole provided in the plate 7, and the boss portion 9b and the plate 7 are not brazed.
【００１９】上下のフランジ部９ｃ、９ｄの間には環状
の凹所14が形成されており、ボス部９ｂの断面積はこの
部分で小さくなっている。従って溶接部11からろう付け
部10へ伝導によって伝えられる溶接熱がこの部分で制限
され、また該部分における広い表面から溶接熱が外部へ
放散されるので、溶接部11からろう付け部10へ伝わる熱
量はさらに少くなる。ボス部９ａ側も上記と同様に構成
されている。An annular recess 14 is formed between the upper and lower flange portions 9c and 9d, and the cross-sectional area of the boss portion 9b is small at this portion. Therefore, the welding heat transferred from the weld 11 to the brazing part 10 by conduction is limited in this part, and the welding heat is dissipated to the outside from the large surface in the part, so that it is transferred from the welding part 11 to the brazing part 10. The amount of heat becomes smaller. The boss portion 9a side is also configured similarly to the above.
【００２０】上記実施例においては、ケーシング２内に
水平な扁平管５が上下方向に積層され、最上段の扁平管
５1 が下方にずらして設けられているが、例えばケーシ
ング内に上下方向に指向した扁平管を水平方向に積層し
てもよく、この場合には水平方向最外方の扁平管をケー
シング内方へずらして設けることは言うまでもない。In the above embodiment, the horizontal flat tubes 5 are vertically stacked in the casing 2 and the uppermost flat tubes 5 1 are provided so as to be shifted downward. For example, the flat tubes 5 1 are vertically arranged in the casing. It is needless to say that the oriented flat tubes may be laminated in the horizontal direction, and in this case, the outermost flat tubes in the horizontal direction are provided so as to be shifted inward of the casing.
【００２１】[0021]
【発明の効果】本発明によれば、熱交換器エレメントの
ろう付けしたボス部をケーシング壁部に溶接する際、溶
接の熱によりろう付け部が再加熱されてろう付け強度の
低下を招いたり、また溶接時の歪みによりろう付け部の
剥離を生じたりして、熱交換器としての耐久性、気密性
が損なわれることがない。According to the present invention, when the brazed boss portion of the heat exchanger element is welded to the casing wall portion, the brazing portion is reheated by the heat of the welding and the brazing strength is lowered. In addition, peeling of the brazed portion due to distortion during welding does not impair durability and airtightness as a heat exchanger.
【図１】本発明による熱交換器のケーシングを縦断して
内部の熱交換器エレメントを示した正面図である。FIG. 1 is a front view showing a heat exchanger element inside by vertically cutting a casing of a heat exchanger according to the present invention.
【図２】図１の一部拡大図である。FIG. 2 is a partially enlarged view of FIG.
【図３】ボス部近傍の断面図である。FIG. 3 is a cross-sectional view near a boss portion.
【図４】従来の熱交換器のボス部近傍を示す正面図であ
る。FIG. 4 is a front view showing the vicinity of a boss portion of a conventional heat exchanger.
１…熱交換器、２…ケーシング、３…熱交換器エレメン
ト、４…プレート、５…扁平管、６…フィン、７…板、
８…ヘッダ部、９…ボス部、10…ろう付け部、11…溶接
部、12…孔、13…ヘッダ部片、14…凹所。1 ... Heat exchanger, 2 ... Casing, 3 ... Heat exchanger element, 4 ... Plate, 5 ... Flat tube, 6 ... Fin, 7 ... Plate,
8 ... Header part, 9 ... Boss part, 10 ... Brazing part, 11 ... Welding part, 12 ... Hole, 13 ... Header part piece, 14 ... Recessed part.
Claims (1)
た扁平管を互いに間隔を存して複数個積み重ね、両端部
に各扁平管を連通させるヘッダ部をそれぞれ設け、各ヘ
ッダ部の一端部にそれぞれ流体導入、導出用のボス部を
ろう付けして構成した熱交換器エレメントを、ケーシン
グ内に収容し、前記ボス部を該ケーシングの壁部を貫通
させるとともに該壁部に溶接して成る熱交換器におい
て、前記熱交換器エレメントの前記ボス部側最外方の扁
平管を、該熱交換器エレメントの外側面から前記扁平管
どうしの間隔にほぼ等しい間隔だけ内方にずらして設
け、この最外方の扁平管に前記ボス部をろう付けすると
ともに、該ボス部を前記熱交換器エレメントの外側面を
超えて延出させ、前記ろう付けされた部分から離隔した
位置において前記ケーシングの壁部に溶接したことを特
徴とする熱交換器。1. A plurality of flat tubes formed by two plates facing each other are stacked at an interval from each other, and header portions for communicating the flat tubes are provided at both ends, and one end portion of each header portion is provided. A heat exchanger element formed by brazing a boss for introducing and drawing out a fluid is housed in a casing, and the boss is penetrated through the wall of the casing and welded to the wall. In the exchanger, the outermost flat tube of the heat exchanger element on the boss side is provided so as to be displaced inward from the outer surface of the heat exchanger element by a distance substantially equal to the distance between the flat tubes. The boss portion is brazed to the outermost flat tube, the boss portion is extended beyond the outer surface of the heat exchanger element, and the case is located at a position separated from the brazed portion. A heat exchanger characterized by being welded to the wall of the ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181633A JP2691493B2 (en) | 1992-06-17 | 1992-06-17 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181633A JP2691493B2 (en) | 1992-06-17 | 1992-06-17 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH063082A JPH063082A (en) | 1994-01-11 |
| JP2691493B2 true JP2691493B2 (en) | 1997-12-17 |
Family
ID=16104182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4181633A Expired - Fee Related JP2691493B2 (en) | 1992-06-17 | 1992-06-17 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2691493B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628654B (en) * | 2012-03-06 | 2013-10-02 | 浙江康盛热交换器有限公司 | Method for producing and assembling micro-channel heat exchanger |
-
1992
- 1992-06-17 JP JP4181633A patent/JP2691493B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH063082A (en) | 1994-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |