JP2009192174A - Manufacturing method of heat exchanger, and heat exchanger - Google Patents

Manufacturing method of heat exchanger, and heat exchanger Download PDF

Info

Publication number
JP2009192174A
JP2009192174A JP2008034911A JP2008034911A JP2009192174A JP 2009192174 A JP2009192174 A JP 2009192174A JP 2008034911 A JP2008034911 A JP 2008034911A JP 2008034911 A JP2008034911 A JP 2008034911A JP 2009192174 A JP2009192174 A JP 2009192174A
Authority
JP
Japan
Prior art keywords
pair
slit
heat exchanger
tube
manufacturing
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.)
Granted
Application number
JP2008034911A
Other languages
Japanese (ja)
Other versions
JP5166062B2 (en
Inventor
Shoji Itami
昇次 伊丹
Masashi Takeuchi
雅志 竹内
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.)
T Rad Co Ltd
Original Assignee
T Rad 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 T Rad Co Ltd filed Critical T Rad Co Ltd
Priority to JP2008034911A priority Critical patent/JP5166062B2/en
Publication of JP2009192174A publication Critical patent/JP2009192174A/en
Application granted granted Critical
Publication of JP5166062B2 publication Critical patent/JP5166062B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To easily carry out the press fitting of a meandering tube 4, and to provide a heat exchanger with favorable performance in a method of manufacturing the heat exchanger by pressing the meandering tube into holes 5 of laminated plate fins 8. <P>SOLUTION: Tube wall cutout parts 6a are formed in a pair of mutually separated short tubes 6 on opposite sides thereof as the plate fins 8, respectively, and the tube wall cutout parts 6a are connected by a slit 7 formed by a cut line. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、熱交換器の製造方法およびそれによる熱交換器に係り、より詳しくは蛇行チューブを多数のプレートフィンに圧入して熱交換器を製造するものに関する。   The present invention relates to a heat exchanger manufacturing method and a heat exchanger using the heat exchanger, and more particularly to a heat exchanger manufactured by press-fitting a meandering tube into a number of plate fins.

空調用熱交換器等に用いられるプレートフィン型のものにおいて、プレートフィンに長孔を形成しておき、蛇行曲折されたチューブのＵ字状湾曲部をそこに圧入したものが、下記特許文献その他として知られている。
一例として、図１２（Ｃ）はそのプレートフィン８の平面図であり、そのプレートフィン８には長孔13が穿設されている。この長孔13はその両端に位置する孔部13aと、その孔部13aの直径よりも僅かに小なる幅のスリット部13bとから形成されている。
また、蛇行チューブ４は互いに平行な直線部１とその両端間を連結する湾曲部３とを有し、湾曲部３が僅かに塑性変形されて、そこに湾曲偏平部3aを有する。
このような蛇行チューブ４のＵ字状部分をプレートフィン８の長孔13に圧入して熱交換器を完成する。 In the plate fin type used for air-conditioning heat exchangers, etc., a long hole is formed in the plate fin, and the U-shaped curved portion of the meandering tube is press-fitted there, the following patent documents and others Known as.
As an example, FIG. 12C is a plan view of the plate fin 8, and a long hole 13 is formed in the plate fin 8. The long hole 13 is formed by a hole portion 13a located at both ends thereof and a slit portion 13b having a width slightly smaller than the diameter of the hole portion 13a.
Further, the meandering tube 4 has a straight portion 1 parallel to each other and a curved portion 3 connecting both ends thereof, and the curved portion 3 is slightly plastically deformed to have a curved flat portion 3a.
The U-shaped portion of the meandering tube 4 is press-fitted into the long hole 13 of the plate fin 8 to complete the heat exchanger.

特開２００２−３６１３４６号公報JP 2002-361346 A 特開２００７−９３０３６号公報JP 2007-93036 A 特開２００４−１１６８４５号公報JP 2004-116845 A

図１２（Ａ）に示す熱交換器は、そのプレートフィン８に長孔13が形成され、そのスリット部13bの幅が広いため、その分だけ、放熱面積が狭くなり、熱交換性能が低下する。
また、そのスリット部13bに挿入される蛇行チューブ４の湾曲部３を偏平に形成して、湾曲偏平部3aを設けた場合、図１２（Ｂ）の如く、その直線部１と湾曲偏平部3aとの境近傍において直線部１の側壁1aよりも湾曲偏平部3aの側縁3bが外側に突出する。そのため、蛇行チューブ４をプレートフィン８の長孔13に挿入する際、その側縁3bと長孔13の孔部13aの孔縁部とが干渉し、蛇行チューブ４をプレートフィン８に円滑に圧入し難い欠点があった。
そこで本発明は、係る問題点を解決することを課題とする。 In the heat exchanger shown in FIG. 12A, the long holes 13 are formed in the plate fins 8 and the width of the slit portions 13b is wide. Therefore, the heat radiation area is reduced accordingly, and the heat exchange performance is lowered. .
When the curved portion 3 of the meandering tube 4 inserted into the slit portion 13b is formed flat and the curved flat portion 3a is provided, the straight portion 1 and the curved flat portion 3a are provided as shown in FIG. In the vicinity of the boundary, the side edge 3b of the curved flat portion 3a protrudes outward from the side wall 1a of the straight portion 1. Therefore, when the meandering tube 4 is inserted into the long hole 13 of the plate fin 8, the side edge 3 b interferes with the hole edge of the hole 13 a of the long hole 13, and the meandering tube 4 is smoothly pressed into the plate fin 8. There was a difficult defect.
Then, this invention makes it a subject to solve the problem which concerns.

請求項１に記載の本発明は、断面円形のチューブを一定のピッチで蛇行状に曲折して、互いに平行な直線部(1)と、その直線部(1)の両端で隣り合う直線部(1)の間が互いに連結される湾曲部(3)とを形成すると共に、直線部の一方側の湾曲部(3)を断面偏平に塑性変形して、そこに湾曲偏平部(3a)を有する蛇行チューブ(4)を形成する工程と、
少なくとも一対の孔(5)を前記ピッチの間隔で離間してプレートに形成すると共に、それぞれの孔(5)の孔縁部を立ち上げて一対の短筒部(6)を形成し且つ、その一対の短筒部(6)の対向側の筒壁をその全高さに渡って欠切して、一対の筒壁欠切部(6a)を形成し、その一対の筒壁欠切部(6a)どうしが連通するように、その筒壁欠切部(6a)の幅より狭く且つ、前記湾曲偏平部(3a)の厚みより狭いスリット(7)を入れて、多数の同一形状のプレートフィン(8)を形成する工程と、
多数の前記プレートフィン(8)を厚み方向に積層し、前記蛇行チューブ(4)をその前記湾曲偏平部(3a)側から、積層された各プレートフィン(8)の一対の短筒部(6)および筒壁欠切部(6a)ならびにスリット(7)に圧入して、前記スリット(7)の幅を拡開すると共に、そのスリット(7)の近傍を塑性変形する工程と、
その圧入工程の後に、前記蛇行チューブ(4)内に流体圧を加えて、そのチューブの直線部(1)および湾曲部(3)(3a) を拡管する工程と、を具備する熱交換器の製造方法である。 According to the present invention, a tube having a circular cross section is bent in a meandering manner at a constant pitch, and a straight line portion (1) parallel to each other and a straight line portion adjacent to both ends of the straight line portion (1) ( 1) and a curved portion (3) connected to each other, and the curved portion (3) on one side of the linear portion is plastically deformed to have a flat cross section, and has a curved flat portion (3a) there. Forming a meandering tube (4);
At least a pair of holes (5) are formed in the plate spaced apart at the pitch interval, and the edge of each hole (5) is raised to form a pair of short cylinder parts (6), and The pair of short tube portions (6) are cut away from each other across the entire height thereof to form a pair of tube wall notches (6a), and the pair of tube wall notches (6a ) In order to communicate with each other, a slit (7) narrower than the width of the cylindrical wall notch (6a) and narrower than the thickness of the curved flat portion (3a) is inserted, and a number of plate fins having the same shape ( 8) forming,
A large number of the plate fins (8) are laminated in the thickness direction, and the meandering tube (4) from the curved flat part (3a) side is paired with a pair of short cylindrical parts (6 ) And the cylindrical wall notch (6a) and the slit (7), and widening the width of the slit (7), and plastically deforming the vicinity of the slit (7),
After the press-fitting step, a fluid pressure is applied to the meandering tube (4) to expand the straight portion (1) and the curved portion (3) (3a) of the tube, and a heat exchanger comprising: It is a manufacturing method.

請求項２に記載の本発明は、請求項１において、
一対の前記短筒部(6)の対向側の筒壁をその全高さに渡って欠切して、一対の筒壁欠切部(6a)を形成した後に、その一対の筒壁欠切部(6a)どうし連通するように、プレートの材料の切除を伴わない、切目よりなるスリット(7)を形成したことを特徴とする熱交換器の製造方法である。 The present invention according to claim 2 is the method according to claim 1,
The pair of cylindrical wall notches are formed by notching the opposite cylindrical walls of the pair of short cylinder portions (6) over the entire height to form the pair of cylindrical wall notches (6a). (6a) A method of manufacturing a heat exchanger, characterized in that slits (7) made of notches are formed so as to communicate with each other without cutting the material of the plate.

請求項３に記載の本発明は、請求項１において、
前記湾曲偏平部(3a)を形成する工程で、その湾曲偏平部(3a)の幅方向両側縁(3b)がそれに連結する一対の直線部(1)の外側の側縁(1a)より突出しないように形成した熱交換器の製造方法である。 The present invention according to claim 3 provides the method according to claim 1,
In the step of forming the curved flat portion (3a), both side edges (3b) in the width direction of the curved flat portion (3a) do not protrude from the outer side edges (1a) of the pair of linear portions (1) connected thereto. It is a manufacturing method of the heat exchanger formed in this way.

請求項４に記載の本発明は、請求項３において、
前記湾曲偏平部(3a)と一対の直線部(1)との境を平面ハの字状に形成した熱交換器の製造方法である。
請求項５に記載の本発明は、請求項１〜請求項４のいずれかにおいて、
前記スリット(7)の両端から、そのスリット(7)に直交してプレートに横スリット(7a)を形成する工程を設けた熱交換器の製造方法である。 The present invention as set forth in claim 4 is characterized in that, in claim 3,
This is a method of manufacturing a heat exchanger in which the boundary between the curved flat part (3a) and the pair of straight parts (1) is formed in a plane C shape.
The present invention according to claim 5 provides the method according to any one of claims 1 to 4,
This is a method of manufacturing a heat exchanger provided with a step of forming a lateral slit (7a) in a plate perpendicular to the slit (7) from both ends of the slit (7).

請求項６に記載の本発明は、請求項１〜請求項４のいずれかにおいて、
前記スリット(7)の幅方向両側に二分された一対の平坦部(10)の該スリット側縁部を全長に渡り、横断面への字状にその平坦部に対して前記短筒部と逆側に曲折して、そこに折り曲げ縁部(10a)を形成する工程を設けた熱交換器の製造方法である。
請求項７に記載の本発明は、請求項１〜請求項４のいずれかの製造方法により製造された熱交換器である。 A sixth aspect of the present invention provides the method according to any one of the first to fourth aspects,
The slit side edges of a pair of flat portions (10) divided into two sides on both sides in the width direction of the slit (7) span the entire length, and in the shape of a cross section, the flat portions are opposite to the short cylindrical portions. The heat exchanger manufacturing method is provided with a step of bending to the side and forming a bent edge (10a) there.
The present invention according to claim 7 is a heat exchanger manufactured by the manufacturing method according to any one of claims 1 to 4.

本発明の熱交換器の製造方法は、蛇行チューブ４を多数の同一形状のプレートフィン８に圧入するものにおいて、そのプレートフィン８が互いに離間した一対の短筒部６を有し、その短筒部６の対向側の筒壁に筒壁欠切部6aが形成され、筒壁欠切部6aどうしを連通するスリット７が筒壁欠切部6aの幅より狭く形成され、そこに蛇行チューブ４の湾曲偏平部3aが圧入されるようにしたから、蛇行チューブ４全体を容易に多数のプレートフィン８の積層体に圧入することができる。それと共に、スリット７の幅が従来のものに比べて狭いので、伝熱面積が広くなり、性能の良い熱交換器となる。
さらに、蛇行チューブ４を圧入した後に、蛇行チューブ４内に流体圧を加えてその直線部１および湾曲部３を拡開するように構成したから、湾曲偏平部3aを円形に戻して蛇行チューブ４内の流体の流通を良好にし得る。それと共に、蛇行チューブ４の外周とプレートフィン８の短筒部６との間を密着させ、両者間の熱伝達を良好に維持できる。 The method for manufacturing a heat exchanger according to the present invention is such that the meandering tube 4 is press-fitted into a large number of plate fins 8 having the same shape, and the plate fins 8 have a pair of short cylindrical portions 6 separated from each other. A tube wall notch 6a is formed on the tube wall opposite to the portion 6, and a slit 7 communicating with the tube wall notch 6a is formed narrower than the width of the tube wall notch 6a. Since the curved flat portion 3a is press-fitted, the entire meandering tube 4 can be easily press-fitted into the laminate of a large number of plate fins 8. At the same time, since the width of the slit 7 is narrower than that of the conventional one, the heat transfer area is widened, and the heat exchanger has a good performance.
Further, after the meandering tube 4 is press-fitted, a fluid pressure is applied to the meandering tube 4 to expand the straight portion 1 and the curved portion 3, so that the curved flat portion 3 a is returned to a circular shape and the meandering tube 4. The flow of the fluid inside can be improved. At the same time, the outer periphery of the meandering tube 4 and the short cylindrical portion 6 of the plate fin 8 are brought into close contact with each other, and heat transfer between them can be maintained well.

上記構成において、スリット７をプレートの材料の切除を行わない切目によって形成することができる。この場合には、放熱面積を最大限に利用でき、さらに熱交換性能が向上する。   In the above configuration, the slit 7 can be formed by a cut that does not cut the material of the plate. In this case, the heat radiation area can be utilized to the maximum, and the heat exchange performance is further improved.

上記構成において、蛇行チューブ４の湾曲偏平部3aを形成する工程で、その湾曲偏平部3aの幅方向の両側縁3bをそれに連結する一対の直線部１の外側の側壁1aより突出しないように形成することができる。この場合には、蛇行チューブ４をプレートフィン８に圧入するに際し、湾曲偏平部3aの側縁3bがプレートフィン８の短筒部６と干渉することがなく、円滑に圧入することができる。   In the above configuration, in the step of forming the curved flat portion 3a of the meandering tube 4, the both side edges 3b in the width direction of the curved flat portion 3a are formed so as not to protrude from the outer side walls 1a of the pair of straight portions 1 connected thereto. can do. In this case, when the meandering tube 4 is press-fitted into the plate fin 8, the side edge 3 b of the curved flat part 3 a does not interfere with the short cylindrical part 6 of the plate fin 8 and can be smoothly press-fitted.

上記構成において、湾曲偏平部3aと一対の直線部１との境を平面ハの字状に形成することができる。この場合には、容易に湾曲偏平部3aの側縁3bを直線部１の側壁1aより突出しないようにすることができる。
上記いずれかの構成において、前記スリット(7)の両端から、そのスリット(7)に直交してプレートに一対の横スリット(7a)を形成する工程を設けた場合には、各スリット(7)(7a)で囲まれたプレートの部分が塑性変形し易くなるため、蛇行チューブ４全体をさらに容易に多数のプレートフィン８の積層体に圧入することができる。 In the above configuration, the boundary between the curved flat portion 3a and the pair of straight portions 1 can be formed in a plane C shape. In this case, the side edge 3b of the curved flat portion 3a can be easily prevented from protruding from the side wall 1a of the straight portion 1.
In any one of the configurations described above, when a step of forming a pair of lateral slits (7a) on the plate perpendicular to the slit (7) from both ends of the slit (7), each slit (7) Since the portion of the plate surrounded by (7a) is easily plastically deformed, the entire meandering tube 4 can be more easily press-fitted into the laminated body of a large number of plate fins 8.

上記いずれかの構成において、
前記スリット７の幅方向両側に二分された一対の平坦部10の該スリット側縁部を全長に渡り、横断面への字状にその平坦部10に対して前記短筒部と逆側に曲折して、そこに折り曲げ縁部10aを形成する工程を設けた場合にも、各スリット(7)(7a)で囲まれたプレートの部分が塑性変形し易くなるため、蛇行チューブ４全体を容易に多数のプレートフィン８の積層体に圧入することができる。
また、上記何れかの製造方法により製造された熱交換器は、伝熱面積が大きく、性能の良い熱交換器となる。 In any of the above configurations,
The slit side edges of the pair of flat portions 10 divided into both sides in the width direction of the slit 7 are bent over the entire length and bent in the shape of a transverse section to the opposite side of the short tube portion with respect to the flat portion 10. Even when the step of forming the bent edge portion 10a is provided, the portion of the plate surrounded by the slits (7) and (7a) is easily plastically deformed. A large number of plate fins 8 can be press-fitted into the laminate.
Moreover, the heat exchanger manufactured by any one of the above manufacturing methods has a large heat transfer area and is a heat exchanger with good performance.

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は本発明の対象とする熱交換器のプレートフィン８の要部斜視図であり、図２は同平面図、図３は図２のIII−III矢視断面図、図４は本熱交換器の製造方法の説明図、図５は同熱交換器の蛇行チューブ４の要部を示し、図６は図５のVI−VI矢視断面略図、図７は図４において蛇行チューブ４をプレートフィン８に圧入後の状態を示し、図８は図７のVIII−VIII矢視断面略図であり、図９は本熱交換器を組み立てた後の工程を示す説明図である。
本発明の熱交換器およびその製造方法の最大の特徴は、プレートフィン８の形状または構造である。このプレートフィン８は、図１〜図３に示す如く、少なくとも一対の孔５が互いに離間して設けられ、その孔５の孔縁部が立ち上げ形成されて短筒部６を構成する。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a principal part of a plate fin 8 of a heat exchanger as a subject of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a cross-sectional view taken along arrow III-III in FIG. FIG. 5 shows an essential part of the meandering tube 4 of the heat exchanger, FIG. 6 is a schematic sectional view taken along the line VI-VI in FIG. 5, and FIG. 7 shows the meandering tube 4 in FIG. FIG. 8 is a schematic cross-sectional view taken along the line VIII-VIII in FIG. 7, and FIG. 9 is an explanatory view showing the process after assembling the heat exchanger.
The greatest feature of the heat exchanger of the present invention and the manufacturing method thereof is the shape or structure of the plate fin 8. As shown in FIGS. 1 to 3, the plate fin 8 includes at least a pair of holes 5 that are spaced apart from each other, and a hole edge portion of the hole 5 is formed so as to form a short tube portion 6.

短筒部６の先端縁には、鍔部6bが半径方向外方へ突出形成されている。そして、その一対の短筒部６の対向側の側壁が全高さに渡って欠切され、そこに一対の筒壁欠切部6aが形成されている。さらに、筒壁欠切部6aの根元部には抜き穴部6cが設けられている。この抜き穴部6cの幅は、筒壁欠切部6aの周方向の幅に一致し、プレートフィン８の長手方向に僅かだけ形成されている。そして、各抜き穴部6cの中央位置において、この例では切目からなるスリット７が一対の抜き穴部6c間に形成され、それがフィンの板厚分を貫通する。さらに、そのスリット７の両端から、そのスリット７に直交してプレートに一対の横スリット7aが各抜き穴部6cの幅より広く形成される。この例ではその横スリット7aが折り曲げ線９まで延在する。なお、この横スリット7aは、省略することもできる。
また、短筒部６の根元部には凹陥部２が設けられ、その凹陥部２を除き、プレートフィン８の横断面は、図１の如く、低い台形状に曲折されている。 A flange portion 6b is formed on the distal end edge of the short cylinder portion 6 so as to protrude outward in the radial direction. And the side wall on the opposite side of the pair of short cylinder parts 6 is notched over the entire height, and a pair of cylinder wall notch parts 6a are formed there. Further, a punched hole 6c is provided at the base of the cylindrical wall notch 6a. The width of the hole 6c matches the circumferential width of the cylindrical wall notch 6a and is formed only slightly in the longitudinal direction of the plate fin 8. In this example, a slit 7 made of a cut is formed between the pair of punched holes 6c at the center position of each punched hole 6c, and penetrates the thickness of the fin. Further, a pair of lateral slits 7a are formed in the plate from both ends of the slit 7 so as to be orthogonal to the slit 7 and wider than the width of each punched hole portion 6c. In this example, the lateral slit 7 a extends to the folding line 9. The horizontal slit 7a can be omitted.
Moreover, the concave part 2 is provided in the root part of the short cylinder part 6, and the cross section of the plate fin 8 is bent by the low trapezoid shape like FIG.

このようなプレートフィン８を形成するには、一例として次のようにして製造することができる。薄いアルミニューム板等のフィンシートに定間隔に浅い筒状の絞り加工を形成すると共に、それ以外の部分を横断面台形状に形成する。次いで、絞り加工部分にさらに短筒部形成用の絞り加工を施し、その絞り先端の底部を孔抜きする。次いで、その筒状部の先端縁をフレア加工し、鍔部6bを形成する。次いで、一対の短筒部６の対向側の筒壁欠切部6aおよび抜き穴部6cを切り取る。次いで、一対の抜き穴部6c間に切目からなるスリット７および、そのスリット７の両端に、それに直交して横スリット7aを折り曲げ線９まで形成する。
次に、蛇行チューブ４は、図４の如く、断面円形のチューブを一定のピッチで蛇行状に曲折する。この蛇行のピッチ間隔は、図１および図２におけるプレートフィン８の一対の孔５のピッチと同一である。 In order to form such a plate fin 8, it can manufacture as follows as an example. A shallow cylindrical drawing process is formed at regular intervals on a fin sheet such as a thin aluminum plate, and the other parts are formed in a trapezoidal cross section. Next, the drawing portion is further subjected to drawing processing for forming a short cylinder portion, and the bottom of the drawing tip is punched. Next, the tip edge of the cylindrical portion is flared to form the flange portion 6b. Next, the cylinder wall notch 6a and the punched hole 6c on the opposite side of the pair of short cylinders 6 are cut out. Next, a slit 7 made of a slit is formed between the pair of punched hole portions 6c, and lateral slits 7a are formed up to the folding line 9 at both ends of the slit 7 so as to be orthogonal thereto.
Next, as shown in FIG. 4, the meandering tube 4 bends a tube having a circular cross section in a meandering manner at a constant pitch. The pitch interval of the meandering is the same as the pitch of the pair of holes 5 of the plate fin 8 in FIGS.

このようにして互いに平行な直線部１と、隣り合う直線部１の間が互いに連結される湾曲部３とを形成する。次いで、直線部１の一方側の湾曲部３のみを断面偏平に塑性変形して、そこに湾曲偏平部3aを形成する。この湾曲偏平部3aは、図５に示す如く、その湾曲偏平部3aと直線部１との境を平面ハの字状に形成する。このように湾曲偏平部3aを形成するのは、その幅が直線部１の直径よりも大きくなるので、湾曲偏平部3aの側縁3bが直線部１の側壁1aより突出しないようにしたものである。仮に、この側縁3bが湾曲偏平部3aより突出すると、蛇行チューブ４をプレートフィン８に挿入するときその側縁3bがプレートフィン８の孔５の孔縁部と干渉し、円滑な挿入ができないからである。そこで、湾曲偏平部3aの側縁3bが直線部１の側壁1aよりｔ内側に位置するようにしたものである。   In this way, the straight portions 1 that are parallel to each other and the curved portions 3 that are connected to each other between the adjacent straight portions 1 are formed. Next, only the curved portion 3 on one side of the straight portion 1 is plastically deformed to have a flat cross section, and a curved flat portion 3a is formed there. As shown in FIG. 5, the curved flat portion 3 a forms a plane C-shaped boundary between the curved flat portion 3 a and the straight portion 1. The curved flat part 3a is formed in this way because its width is larger than the diameter of the straight part 1, so that the side edge 3b of the curved flat part 3a does not protrude from the side wall 1a of the straight part 1. is there. If the side edge 3b protrudes from the curved flat part 3a, when the meandering tube 4 is inserted into the plate fin 8, the side edge 3b interferes with the hole edge of the hole 5 of the plate fin 8, and smooth insertion cannot be performed. Because. Therefore, the side edge 3b of the curved flat part 3a is positioned t inside the side wall 1a of the straight part 1.

このように形成された蛇行チューブ４と多数のプレートフィン８とを組み立てるには、次のようにする。
先ず、図４に示す如く、多数の同一形状のプレートフィン８を積層する。このとき、プレートフィン８の間隔は短筒部６の高さに一致する。次いで、蛇行チューブ４の湾曲偏平部3a側を各プレートフィン８の短筒部６側に対向させ、蛇行チューブ４の各湾曲偏平部3aをスリット７に圧入し、次いで、各直線部１を短筒部６に挿通する。すると、図７および図８に示す如く、スリット７（図１，図２）と横スリット7aで囲まれた平坦部10の平面コ字状部が拡開されると共に、それが下方に変形して、図８の如く変形ルーバ11が形成される。この変形ルーバ11は、プレートフィン８の平面方向から流通する空気流14に対して、その気流を分断し、それによる前縁効果を生じさせ、熱交換を促進させるものとなる。また、この変形ルーバ11の変形は、元の平坦部10が蛇行チューブ４の湾曲偏平部3aを通過させるときに生じ、必要最小限度であり、それにより空気の流通抵抗の増加を最小限度にする。 In order to assemble the meandering tube 4 and the many plate fins 8 formed in this way, the following is performed.
First, as shown in FIG. 4, a large number of plate fins 8 having the same shape are stacked. At this time, the interval between the plate fins 8 coincides with the height of the short cylinder portion 6. Next, the curved flat portion 3a side of the meandering tube 4 is opposed to the short cylindrical portion 6 side of each plate fin 8, each curved flat portion 3a of the meandering tube 4 is press-fitted into the slit 7, and then each straight portion 1 is short. The tube portion 6 is inserted. Then, as shown in FIG. 7 and FIG. 8, the planar U-shaped portion of the flat portion 10 surrounded by the slit 7 (FIGS. 1 and 2) and the lateral slit 7a is expanded and deformed downward. Thus, a modified louver 11 is formed as shown in FIG. The deformed louver 11 divides the air flow 14 flowing from the plane direction of the plate fin 8, thereby generating a leading edge effect and promoting heat exchange. Further, the deformation of the deformation louver 11 occurs when the original flat portion 10 passes through the curved flat portion 3a of the meandering tube 4, and is a necessary minimum, thereby minimizing an increase in air flow resistance. .

なお、図１および図２において、筒壁欠切部6aの周方向の幅は蛇行チューブ４の湾曲偏平部3aの厚みと同一または僅かに大に形成される。また、スリット７はこの例では板材の切り落としのない切目で形成されているが、それに代えて僅かな幅で打ち抜いても良い。この場合には、その幅は蛇行チューブ４の湾曲偏平部3aの厚みよりも狭くする。   1 and 2, the circumferential width of the cylindrical wall notch 6 a is formed to be the same as or slightly larger than the thickness of the curved flat portion 3 a of the meandering tube 4. Further, in this example, the slit 7 is formed by a cut without cutting off the plate material, but may be punched with a slight width instead. In this case, the width is narrower than the thickness of the curved flat portion 3a of the meandering tube 4.

次いで、図９の如く組み立てられた熱交換器12の蛇行チューブ４の一端を栓16で閉塞すると共に、蛇行チューブ４の他端から高圧の液体15を蛇行チューブ４内に圧入して、蛇行チューブ４全体を拡管する。それによって、直線部１とプレートフィン８の短筒部６とが密着すると共に、蛇行チューブ４の湾曲偏平部3aが断面円形に形成され、蛇行チューブ４の内部における熱交換媒体の圧力損失を低減する。
次に、図１０および図１１に示すプレートフィン８は、本発明の他の製造方法の実施の形態を示し、図２，図３のプレートフィン８との違いは、その平面10のスリット７の両縁部を図において、下側に折り曲げた折り曲げ縁部10aを有する点である。この折り曲げ縁部10aの存在により、そこに、蛇行チューブ４の湾曲部３をより圧入し易くするものである。 Next, one end of the meandering tube 4 of the heat exchanger 12 assembled as shown in FIG. 9 is closed with a stopper 16, and a high-pressure liquid 15 is pressed into the meandering tube 4 from the other end of the meandering tube 4. 4 Expand the entire tube. As a result, the straight portion 1 and the short cylindrical portion 6 of the plate fin 8 are in close contact with each other, and the curved flat portion 3a of the meandering tube 4 is formed in a circular cross section, thereby reducing the pressure loss of the heat exchange medium inside the meandering tube 4. To do.
Next, the plate fin 8 shown in FIG. 10 and FIG. 11 shows another embodiment of the manufacturing method of the present invention. The difference from the plate fin 8 of FIG. 2 and FIG. This is a point having a bent edge portion 10a in which both edge portions are bent downward in the drawing. The presence of the bent edge portion 10a makes it easier to press-fit the curved portion 3 of the meandering tube 4 there.

本発明の対象とする熱交換器に用いられるプレートフィン８の要部斜視図。The principal part perspective view of the plate fin 8 used for the heat exchanger made into the object of this invention. 同平面図。FIG. 図２のIII−III矢視断面図。III-III arrow sectional drawing of FIG. 本熱交換器の製造方法の説明図。Explanatory drawing of the manufacturing method of this heat exchanger.

同熱交換器の蛇行チューブ４の要部を示す説明図。Explanatory drawing which shows the principal part of the meandering tube 4 of the same heat exchanger. 図５のVI−VI矢視断面略図。FIG. 6 is a schematic cross-sectional view taken along the line VI-VI in FIG. 5. プレートフィン８に蛇行チューブ４を圧入した状態を示す要部平面図。The principal part top view which shows the state which press-fitted the meandering tube 4 to the plate fin 8. FIG. 図７のVIII−VIII矢視断面略図。VIII-VIII arrow cross-sectional schematic of FIG.

本熱交換器の製造方法の最終工程を示す説明図。Explanatory drawing which shows the last process of the manufacturing method of this heat exchanger. 本発明の対象とする熱交換器に用いられるプレートフィン８の他の例を示す平面図。The top view which shows the other example of the plate fin 8 used for the heat exchanger made into the object of this invention. 図１０のXI−XI矢視断面略図。XI-XI arrow schematic cross-sectional view of FIG. 従来型熱交換器の要部組立図およびＢ部拡大図並びにプレートフィン８の平面図。The principal part assembly drawing of the conventional type heat exchanger, B part enlarged view, and the top view of the plate fin 8. FIG.

符号の説明Explanation of symbols

１ 直線部
1a 側壁
２ 凹陥部
３ 湾曲部
3a 湾曲偏平部
3b 側縁 1 Straight section
1a Side wall
2 Depressed part 3 Curved part
3a Curved flat part
3b side edge

４ 蛇行チューブ
５ 孔
６ 短筒部
6a 筒壁欠切部
6b 鍔部
6c 抜き穴部
７ スリット
7a 横スリット 4 Meandering tube 5 Hole 6 Short tube
6a Tube wall notch
6b buttock
6c Punching hole 7 Slit
7a Horizontal slit

８ プレートフィン
９ 折り曲げ線
10 平面
10a 折り曲げ縁部
11 変形ルーバ
12 熱交換器 8 Plate fin 9 Folding line
10 plane
10a bent edge
11 Modified louver
12 Heat exchanger

13 長孔
13a 孔部
13b スリット部
14 空気流
15 液体
16 栓 13 Slotted hole
13a hole
13b Slit section
14 Air flow
15 liquid
16 taps

Claims (7)

断面円形のチューブを一定のピッチで蛇行状に曲折して、互いに平行な直線部(1)と、その直線部(1)の両端で隣り合う直線部(1)の間が互いに連結される湾曲部(3)とを形成すると共に、直線部の一方側の湾曲部(3)を断面偏平に塑性変形して、そこに湾曲偏平部(3a)を有する蛇行チューブ(4)を形成する工程と、
少なくとも一対の孔(5)を前記ピッチの間隔で離間してプレートに形成すると共に、それぞれの孔(5)の孔縁部を立ち上げて一対の短筒部(6)を形成し且つ、その一対の短筒部(6)の対向側の筒壁をその全高さに渡って欠切して、一対の筒壁欠切部(6a)を形成し、その一対の筒壁欠切部(6a)どうしが連通するように、その筒壁欠切部(6a)の幅より狭く且つ、前記湾曲偏平部(3a)の厚みより狭いスリット(7)を入れて、多数の同一形状のプレートフィン(8) を形成する工程と、
多数の前記プレートフィン(8)を厚み方向に積層し、前記蛇行チューブ(4)をその前記湾曲偏平部(3a)側から、積層された各プレートフィン(8)の一対の短筒部(6)および筒壁欠切部(6a)ならびにスリット(7)に圧入して、前記スリット(7)の幅を拡開すると共に、そのスリット(7)の近傍を塑性変形する工程と、
その圧入工程の後に、前記蛇行チューブ(4)内に流体圧を加えて、そのチューブの直線部(1)および湾曲部(3)(3a)を拡管する工程と、を具備する熱交換器の製造方法。 A curve in which a tube having a circular cross section is bent in a meandering manner at a constant pitch, and a straight line portion (1) parallel to each other and a straight line portion (1) adjacent to each other at both ends of the straight line portion (1) are connected to each other. And forming a meandering tube (4) having a curved flat portion (3a) therewith, and forming a curved portion (3a) on the one side of the linear portion. ,
At least a pair of holes (5) are formed in the plate spaced apart at the pitch interval, and the edge of each hole (5) is raised to form a pair of short cylinder parts (6), and The pair of short tube portions (6) are cut away from each other across the entire height thereof to form a pair of tube wall notches (6a), and the pair of tube wall notches (6a ) In order to communicate with each other, a slit (7) narrower than the width of the cylindrical wall notch (6a) and narrower than the thickness of the curved flat portion (3a) is inserted, and a number of plate fins having the same shape ( 8) forming, and
A large number of the plate fins (8) are laminated in the thickness direction, and the meandering tube (4) from the curved flat part (3a) side is paired with a pair of short cylindrical parts (6 ) And the cylindrical wall notch (6a) and the slit (7), and widening the width of the slit (7), and plastically deforming the vicinity of the slit (7),
After the press-fitting step, a fluid pressure is applied to the meandering tube (4) to expand the straight portion (1) and the curved portion (3) (3a) of the tube, and a heat exchanger comprising: Production method. 請求項１において、
一対の前記短筒部(6)の対向側の筒壁をその全高さに渡って欠切して、一対の筒壁欠切部(6a)を形成した後に、その一対の筒壁欠切部(6a)どうし連通するように、プレートの材料の切除を伴わない、切目よりなるスリット(7)を形成したことを特徴とする熱交換器の製造方法。 In claim 1,
The pair of cylindrical wall notches are formed by notching the opposite cylindrical walls of the pair of short cylinder portions (6) over the entire height to form the pair of cylindrical wall notches (6a). (6a) A method of manufacturing a heat exchanger, characterized in that slits (7) made of notches are formed so as not to communicate with each other so as to communicate with each other. 請求項１において、
前記湾曲偏平部(3a)を形成する工程で、その湾曲偏平部(3a)の幅方向両側縁(3b)がそれに連結する一対の直線部(1)の外側の側縁(1a)より突出しないように形成した熱交換器の製造方法。 In claim 1,
In the step of forming the curved flat portion (3a), both side edges (3b) in the width direction of the curved flat portion (3a) do not protrude from the outer side edges (1a) of the pair of linear portions (1) connected thereto. A method of manufacturing a heat exchanger formed as described above. 請求項３において、
前記湾曲偏平部(3a)と一対の直線部(1)との境を平面ハの字状に形成した熱交換器の製造方法。 In claim 3,
A method of manufacturing a heat exchanger, wherein a boundary between the curved flat portion (3a) and the pair of straight portions (1) is formed in a plane C shape. 請求項１〜請求項４のいずれかにおいて、
前記スリット(7)の両端から、そのスリット(7)に直交してプレートに横スリット(7a)を形成する工程を設けた熱交換器の製造方法。 In any one of Claims 1-4,
A method of manufacturing a heat exchanger, comprising a step of forming a horizontal slit (7a) in a plate perpendicular to the slit (7) from both ends of the slit (7). 請求項１〜請求項４のいずれかにおいて、
前記スリット(7)の幅方向両側に二分された一対の平坦部(10)の該スリット側縁部を全長に渡り、横断面への字状にその平坦面に対して前記短筒部と逆側に曲折して、そこに折り曲げ縁部(10a)を形成する工程を設けた熱交換器の製造方法。 In any one of Claims 1-4,
The slit side edges of a pair of flat portions (10) divided into two sides on both sides in the width direction of the slit (7) extend over the entire length and are opposite to the short tube portion with respect to the flat surface in the shape of a cross section. The manufacturing method of the heat exchanger which provided the process of bending to the side and forming a bending edge part (10a) there. 請求項１〜請求項４のいずれかの製造方法により製造された熱交換器。   The heat exchanger manufactured by the manufacturing method in any one of Claims 1-4.
JP2008034911A 2008-02-15 2008-02-15 Heat exchanger manufacturing method and heat exchanger Expired - Fee Related JP5166062B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008034911A JP5166062B2 (en) 2008-02-15 2008-02-15 Heat exchanger manufacturing method and heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008034911A JP5166062B2 (en) 2008-02-15 2008-02-15 Heat exchanger manufacturing method and heat exchanger

Publications (2)

Publication Number Publication Date
JP2009192174A true JP2009192174A (en) 2009-08-27
JP5166062B2 JP5166062B2 (en) 2013-03-21

Family

ID=41074352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008034911A Expired - Fee Related JP5166062B2 (en) 2008-02-15 2008-02-15 Heat exchanger manufacturing method and heat exchanger

Country Status (1)

Country Link
JP (1) JP5166062B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013054540A1 (en) * 2011-10-14 2013-04-18 パナソニック株式会社 Finned tube heat exchanger
WO2013157212A1 (en) * 2012-04-16 2013-10-24 パナソニック株式会社 Fin-tube heat exchanger
JP2014159884A (en) * 2013-02-19 2014-09-04 Showa Denko Kk Evaporator
CN104246408A (en) * 2012-04-23 2014-12-24 松下知识产权经营株式会社 Finned tube heat exchanger
WO2021181683A1 (en) * 2020-03-13 2021-09-16 三菱電機株式会社 Heat exchanger of air conditioner and method for manufacturing heat exchanger of air conditioner
CN113915801A (en) * 2020-07-10 2022-01-11 杭州三花微通道换热器有限公司 Heat exchange assembly and heat exchange system with same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486490A (en) * 1990-07-30 1992-03-19 Showa Alum Corp Heat exchanger
JPH04190095A (en) * 1990-11-26 1992-07-08 Showa Alum Corp Heat exchanger
JP2001330380A (en) * 2000-05-25 2001-11-30 Matsushita Refrig Co Ltd Heat exchanger
JP2004116845A (en) * 2002-09-25 2004-04-15 Matsushita Refrig Co Ltd Heat exchanger and its manufacturing method
JP2006125658A (en) * 2004-10-26 2006-05-18 Matsushita Electric Ind Co Ltd Heat exchanger
JP2006250521A (en) * 2005-03-07 2006-09-21 Myung-Sun Kim Heat radiation fin for heat exchanger and heat exchanger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486490A (en) * 1990-07-30 1992-03-19 Showa Alum Corp Heat exchanger
JPH04190095A (en) * 1990-11-26 1992-07-08 Showa Alum Corp Heat exchanger
JP2001330380A (en) * 2000-05-25 2001-11-30 Matsushita Refrig Co Ltd Heat exchanger
JP2004116845A (en) * 2002-09-25 2004-04-15 Matsushita Refrig Co Ltd Heat exchanger and its manufacturing method
JP2006125658A (en) * 2004-10-26 2006-05-18 Matsushita Electric Ind Co Ltd Heat exchanger
JP2006250521A (en) * 2005-03-07 2006-09-21 Myung-Sun Kim Heat radiation fin for heat exchanger and heat exchanger

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013054540A1 (en) * 2011-10-14 2013-04-18 パナソニック株式会社 Finned tube heat exchanger
CN103874901A (en) * 2011-10-14 2014-06-18 松下电器产业株式会社 Finned tube heat exchanger
JPWO2013054540A1 (en) * 2011-10-14 2015-03-30 パナソニックＩｐマネジメント株式会社 Finned tube heat exchanger
CN103874901B (en) * 2011-10-14 2015-12-23 松下电器产业株式会社 Fin-tube heat exchanger
WO2013157212A1 (en) * 2012-04-16 2013-10-24 パナソニック株式会社 Fin-tube heat exchanger
JP2013221678A (en) * 2012-04-16 2013-10-28 Panasonic Corp Fin tube heat exchanger
CN104246408A (en) * 2012-04-23 2014-12-24 松下知识产权经营株式会社 Finned tube heat exchanger
CN104246408B (en) * 2012-04-23 2016-06-15 松下知识产权经营株式会社 Fin-tube heat exchanger
JP2014159884A (en) * 2013-02-19 2014-09-04 Showa Denko Kk Evaporator
WO2021181683A1 (en) * 2020-03-13 2021-09-16 三菱電機株式会社 Heat exchanger of air conditioner and method for manufacturing heat exchanger of air conditioner
CN113915801A (en) * 2020-07-10 2022-01-11 杭州三花微通道换热器有限公司 Heat exchange assembly and heat exchange system with same
CN113915801B (en) * 2020-07-10 2023-01-24 杭州三花微通道换热器有限公司 Heat exchange assembly and heat exchange system with same

Also Published As

Publication number Publication date
JP5166062B2 (en) 2013-03-21

Similar Documents

Publication Publication Date Title
JP5166062B2 (en) Heat exchanger manufacturing method and heat exchanger
JP2006200788A (en) Heat exchanger
JP2007139416A (en) Metal plate for producing flat tube, flat tube, and its manufacturing method
GB2286882A (en) Bent finned tube heat exchanger.
WO2007114366A1 (en) Brazed pipe and production method thereof
JP2007078325A (en) Multihole pipe for heat exchange and its manufacturing method
CN110114160B (en) Method for processing flat hole with flanging on metal plate
JP2000074589A (en) Plate fin type heat exchanger and manufacture thereof
JP2018124034A (en) Tube for heat exchanger
JP2014105951A (en) Heat exchanger
JP2006320910A (en) Tube for heat exchanger, and method for manufacturing the same
JP5062067B2 (en) Heat exchanger
JPH08215776A (en) Formation of projecting hole part
JP4329096B2 (en) Heat exchanger and manufacturing method thereof
JP5264304B2 (en) Brazing pipe manufacturing method and heat exchanger manufacturing method
JP2001205375A (en) Method for manufacturing radiator
JP2015140981A (en) Fin tube-type heat exchanger, method of manufacturing the same, and air conditioner
JP5337402B2 (en) Finned tube heat exchanger
JP5612878B2 (en) Heat exchanger
JP2008304156A (en) Heat exchanger and its manufacturing method
EP1515109A2 (en) A heat exchanger and method of manufacturing of a heat exchanger header tank
JP2017528679A (en) Heat exchanger
JP2013024511A (en) Heat exchanger, method of manufacturing heat exchanger, and refrigeration cycle device
JP2009085546A (en) Heat exchanger
JP4985234B2 (en) Heat exchanger and manufacturing method thereof

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110125

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120615

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120710

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120910

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: 20121218

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121220

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

Free format text: PAYMENT UNTIL: 20151228

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 5166062

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees