JP2004125392A - Flat tube for heat exchanger - Google Patents

Flat tube for heat exchanger Download PDF

Info

Publication number
JP2004125392A
JP2004125392A JP2003408110A JP2003408110A JP2004125392A JP 2004125392 A JP2004125392 A JP 2004125392A JP 2003408110 A JP2003408110 A JP 2003408110A JP 2003408110 A JP2003408110 A JP 2003408110A JP 2004125392 A JP2004125392 A JP 2004125392A
Authority
JP
Japan
Prior art keywords
flat tube
heat exchanger
tube
plate
flat
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
JP2003408110A
Other languages
Japanese (ja)
Other versions
JP3735103B2 (en
Inventor
Soichi Kato
加藤　宗一
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.)
Valeo Thermal Systems Japan Corp
Original Assignee
Zexel Valeo Climate Control Corp
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 Zexel Valeo Climate Control Corp filed Critical Zexel Valeo Climate Control Corp
Priority to JP2003408110A priority Critical patent/JP3735103B2/en
Publication of JP2004125392A publication Critical patent/JP2004125392A/en
Application granted granted Critical
Publication of JP3735103B2 publication Critical patent/JP3735103B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat tube for a heat exchanger, allowing improvement of installation workability of the flat tube to reduce production costs by doing away with installation directionality of the flat tube, allowing increase of strength of a bend portion to improve pressure resistance, and capable of increasing heat exchange efficiency. <P>SOLUTION: This flat tube for the heat exchanger is formed with a plurality of flow passages extending in the longitudinal direction by roll forming, and is cut into a prescribed length. In the flat tube for the heat exchanger, a cross-section outer shape is horizontally symmetrically formed, and communication passages are formed between the adjacent flow passages. <P>COPYRIGHT: (C)2004,JPO

Description

　本発明は、１枚のプレートを折り曲げて形成され、パラレルフロータイプの熱交換器に用いられる偏平チューブに関する。 The present invention relates to a flat tube formed by bending a single plate and used in a parallel flow type heat exchanger.

　従来において、パラレルフロータイプの熱交換器に用いられる偏平チューブとして、例えば、特開昭５７−１３６０９３号公報、特開平３−１５５４２２号公報に開示されているものが知られている。 Conventionally, as flat tubes used in a parallel flow type heat exchanger, those disclosed in, for example, JP-A-57-136093 and JP-A-3-155422 are known.

　この種の偏平チューブ１０は、図８に示すように、所定幅のプレートを、ロール成形により中央の折曲げ部１１で折曲げ、両端部１２、１２をろう付けにより接合し、横断面長円形の開口に形成されている。また同時に、ロール成形により偏平チューブ１０の双方の偏平面１０ａに内方へ向けて突出し互いに先端部が当接する突部（ビード）１４が複数設けられており、チューブ内部に通流される熱交換媒体に乱流を起こさせて熱交換効率を高め、チューブ偏平面の強度を高め耐圧性を向上させる構造となっている。
特開昭５７−１３６０９３号公報 特開平３−１５５４２２号公報 実願昭６３−１０６７８４号（実開平２−２８９８１号）のマイクロフィルム 特開平４−２８４３８号公報 実願平３−１６６７５号（実開平４−１０８９１５号）のマイクロフィルム 特開平３−１７４９２４号公報 特開昭６２−１２４０３１号公報 実願昭５７−７８１８９号（実開昭５８−１７９９２１号）のマイクロフィルム 特開昭５０−７９４６９号公報 As shown in FIG. 8, a flat tube 10 of this type is obtained by bending a plate having a predetermined width at a central bent portion 11 by roll forming, joining both ends 12, 12 by brazing, and forming an oval cross section. Is formed in the opening. At the same time, a plurality of protrusions (beads) 14 projecting inward from the two flat surfaces 10a of the flat tube 10 by roll forming and having their tip portions abutting on each other are provided. The structure is such that heat exchange efficiency is increased by causing turbulence in the tube, the strength of the tube uneven plane is increased, and the pressure resistance is improved.
JP-A-57-136093 JP-A-3-155422 Microfilm of Japanese Utility Model Application No. 63-106784 (Japanese Utility Model Application Laid-Open No. 2-28981) JP-A-4-28438 Microfilm of Japanese Utility Model Application No. Hei 3-16675 (Japanese Utility Model Application No. Hei 4-108915) JP-A-3-174924 JP-A-62-124031 Microfilm of Japanese Utility Model Application No. 57-78189 (Japanese Utility Model Application Publication No. 58-179921) JP-A-50-79469

　しかしながら、上述したプレートを折曲げて形成された偏平チューブにおいては、横断面の開口が長円形形成されているが、図８に示すように、偏平チューブ１０の横断面形状として、一方の側部１１がＵ字状屈曲部に形成され、他方の側部では互いに接合された両端部１２、１２が側方に突き出した外形形状に形成されて、偏平チューブの横断面外形形状が左右非対称形となっていたので、ヘッダタンクに設けられるチューブ挿入孔の形状としても左右非対称の形状に形成する必要があり、偏平チューブをヘッダタンクのチューブ挿入孔に挿入して組付ける際には、ヘッダタンクのチューブ挿入孔に方向性を有することになり、偏平チューブの組付け時に組付け方向を確認しながら行なわねばならず、偏平チューブの組付作業性が悪化し、生産性が低下する不具合があった。 However, in the flat tube formed by bending the above-described plate, the opening of the cross section is formed in an oval shape. However, as shown in FIG. 11 is formed in a U-shaped bent portion, and on the other side, both end portions 12, 12 joined to each other are formed in an outer shape protruding to the side, so that the cross-sectional outer shape of the flat tube is left-right asymmetric. Therefore, it is necessary to form the tube insertion hole provided in the header tank in an asymmetrical shape, and when inserting the flat tube into the tube insertion hole of the header tank, Since the tube insertion hole has directionality, it is necessary to check the assembly direction when assembling the flat tube, and the workability of assembling the flat tube deteriorates. Productivity is there is a problem to be lowered.

　本発明の偏平チューブは、ロール成形により、長手方向に伸延する複数の流路が形成されるとともに、所定長さに切断された熱交換器の偏平チューブにおいて、横断面外形形状が左右対称形に形成され、且つ、隣り合う流路間に連通路が形成されて構成されている。 In the flat tube of the present invention, a plurality of flow paths extending in the longitudinal direction are formed by roll forming, and in the flat tube of the heat exchanger cut to a predetermined length, the cross-sectional outer shape is symmetrical. The communication passage is formed between adjacent flow passages.

　このような偏平チューブにおいては、偏平チューブの横断面外形形状が左右対称形に形成されているので、ヘッダタンクのチューブ挿入孔に方向性がなくなり、ヘッダタンクのチューブ挿入孔に偏平チューブを組付ける際に、組付け方向を確認する必要がなくなり、偏平チューブの組付作業性が向上し、生産性を高めることができる。 In such a flat tube, since the cross-sectional outer shape of the flat tube is formed symmetrically, the direction of the tube insertion hole of the header tank is lost, and the flat tube is attached to the tube insertion hole of the header tank. In this case, it is not necessary to confirm the mounting direction, so that the workability of mounting the flat tube is improved, and the productivity can be improved.

　また、偏平チューブは、隣り合う流路間に連通路が形成されているので、流路を通流する媒体が隣り合う流路に出入りできて撹拌され、これにより熱交換効率が向上する。 Further, in the flat tube, since the communication path is formed between the adjacent flow paths, the medium flowing through the flow path can enter and exit the adjacent flow path and is stirred, thereby improving the heat exchange efficiency.

　以下に、本発明の第一具体例を図面に基づいて説明する。 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

　本実施例の偏平チューブ１は、図１に示すように、１枚のプレート２の中央部を折曲げることにより、内部の開口が横断面長円形に形成されている。 偏 As shown in FIG. 1, the flat tube 1 of the present embodiment has an inner opening formed by bending a central portion of one plate 2 so as to have an oval cross section.

　偏平チューブ１の材料となるプレート２には、図２及び図４に示すように、予め、プレート２の中央部の折曲げ部分に、折曲げ反対方向へ膨出するあぜ状の凹部３がロール成形等により設けられている。 As shown in FIGS. 2 and 4, a plate-shaped material 2 of the flat tube 1 is provided with a roll-shaped concave portion 3 bulging in the opposite direction to the center of the plate 2. It is provided by molding or the like.

　また、上記プレート２には、偏平チューブ１の偏平面１ａとなる部分に予め、チューブ１の内方に向け膨出し、上記凹部３での折曲げ時に先端が互いに当接する円状突部（以下、円状ビード４と称する。）がロール成形等により、多数配列して設けられている。このことから明らかなように、隣り合う流路間に連通路が形成されている。従って、流路を通流する媒体が隣り合う流路に出入りできて撹拌され熱交換効率が向上する。尚、これらの円状ビード４は、後述するヘッダタンクと接合する部分には設けられていない。 In addition, the plate 2 has a circular projection (hereinafter referred to as a protrusion) that bulges inward into the tube 1 at a portion to be the flat surface 1a of the flat tube 1 and whose tips come into contact with each other when bent at the recess 3. , A circular bead 4) are provided in a large number by roll molding or the like. As is apparent from this, a communication path is formed between adjacent flow paths. Therefore, the medium flowing through the flow path can enter and exit the adjacent flow path and is stirred, so that the heat exchange efficiency is improved. In addition, these circular beads 4 are not provided in a portion to be joined to a header tank described later.

　そして、ロール成形により、プレート２の凹部３で膨出方向の反対側に折曲げられ、凹部３で折曲げられたプレート２の両端部が合せられて折曲げられた凹部３が潰され、図３に示すように、偏平チューブ１の横断面外形形状が中心線Ｌを中心とした対称形に形成されている。尚、図中、２ａ、２ａは合せられたプレートの端部を示す。 Then, by the roll forming, the plate 2 is bent to the opposite side to the bulging direction at the concave portion 3, and the bent concave portion 3 is crushed by joining both ends of the plate 2 bent at the concave portion 3. As shown in FIG. 3, the cross-sectional outer shape of the flat tube 1 is formed symmetrically with respect to the center line L. In the drawings, reference numerals 2a and 2a denote end portions of the fitted plate.

　更に、熱交換器のヘッダタンク５には、図５に示すように、偏平チューブ１の横断面外形形状に対応したチューブ挿入孔６が設けられ、このチューブ挿入孔６内に偏平チューブ１の各端部を挿入して組付け、一体ろう付けにより接合される。 Further, as shown in FIG. 5, the header tank 5 of the heat exchanger is provided with a tube insertion hole 6 corresponding to the outer cross-sectional shape of the flat tube 1. The ends are inserted and assembled, and joined by integral brazing.

　次に、このような左右対称な偏平チューブ１を製造する場合について図６を参照して説明する。 Next, a case of manufacturing such a symmetrical flat tube 1 will be described with reference to FIG.

　図６に示すように、偏平チューブ１の材料である所定幅のプレート２が巻取られたロール８から繰出されたプレート２は、上下一組の成形ロール９、９により、凹部３及び円状ビード４が形成され、その後、複数段設けられた折曲げロールにより、図７（ａ）〜図７（ｃ）に示すように、次第に折曲げ角度が増大して折曲げてプレート端部２ａが合せられ、その後、図７（ｄ）に示すように、型ロール１３により、プレート２端部が合せた状態で、上記折曲げられた偏平チューブ１の凹部３が潰される。その後、熱交換器の大きさに応じたチューブ長さに切断され、偏平チューブが得られる。 As shown in FIG. 6, the plate 2 pulled out from the roll 8 on which the plate 2 having a predetermined width, which is the material of the flat tube 1, is wound, the concave portion 3 and the circular shape are formed by a pair of upper and lower forming rolls 9. After the bead 4 is formed, the bending angle gradually increases as shown in FIGS. 7 (a) to 7 (c), and the plate ends 2a are bent by the bending rolls provided in a plurality of stages. Then, as shown in FIG. 7 (d), the concave portion 3 of the bent flat tube 1 is crushed by the mold roll 13 with the ends of the plate 2 aligned. Thereafter, the tube is cut into a tube length corresponding to the size of the heat exchanger, and a flat tube is obtained.

　したがって、本具体例の偏平チューブにおいては、偏平チューブの横断面外形形状が左右対称形に形成されているので、ヘッダタンクのチューブ挿入孔に方向性がなくなり、ヘッダタンクのチューブ挿入孔に偏平チューブを組付ける際に、組付け方向を確認する必要がなくなり、偏平チューブの組付作業性が向上し、生産性を高めることができる。 Therefore, in the flat tube of this specific example, since the cross-sectional outer shape of the flat tube is formed symmetrically, the direction of the tube insertion hole of the header tank is lost, and the flat tube is inserted in the tube insertion hole of the header tank. When assembling, it is not necessary to confirm the assembling direction, the workability of assembling the flat tube is improved, and the productivity can be increased.

　また、ロール成形の後で、再度、折曲げられた凹部が潰されるので、端部の接合部分が開くことを防止でき、チューブ挿入孔に偏平チューブを挿入する際に、偏平チューブの挿入がスムースとなり、組付け性が向上する。 Also, after the roll forming, the bent concave portion is crushed again, so that the joint portion at the end can be prevented from opening, and when the flat tube is inserted into the tube insertion hole, the insertion of the flat tube is smooth. And assemblability is improved.

　更に、折曲げ部分には凹部を潰したあぜ状の突出部が形成されるので、折曲げ側の強度が高まり、大きな耐圧性を必要とするコンデンサ等にも適用することが可能となる。 (4) Further, since a bent protruding portion in which a concave portion is crushed is formed in the bent portion, the strength on the bent side is increased, and the present invention can be applied to a capacitor or the like that requires a large pressure resistance.

　このように、本具体例の偏平チューブによれば、横断面外形形状が左右対称形に形成されるので、ヘッダタンクのチューブ挿入孔に方向性がなくなり、ヘッダタンクのチューブ挿入孔に偏平チューブを組付ける際に、組付け方向を確認する必要がなくなり、偏平チューブの組付作業性が向上し、生産性を高めることができる。 As described above, according to the flat tube of this specific example, since the cross-sectional outer shape is formed symmetrically, the direction of the tube insertion hole of the header tank is lost, and the flat tube is inserted into the tube insertion hole of the header tank. When assembling, it is not necessary to confirm the assembling direction, so that the workability of assembling the flat tube is improved, and the productivity can be increased.

　また、隣り合う流路間に連通路が形成されているので、流路を通流する媒体が隣り合う流路に出入りできて撹拌され、これにより熱交換効率が向上する。 Further, since the communication passage is formed between the adjacent flow passages, the medium flowing through the flow passage can enter and exit the adjacent flow passage and is stirred, thereby improving the heat exchange efficiency.

　更に、折曲げ部分には凹部を潰した突出部が形成されるので、折曲げ側の強度が高まり、大きな耐圧性を必要とするコンデンサ等にも適用することが可能となる。 Furthermore, since a protruding portion in which the concave portion is crushed is formed in the bent portion, the strength on the bending side is increased, so that the present invention can be applied to a capacitor or the like that requires a large pressure resistance.

　本発明の熱交換器の偏平チューブは、自動車搭載の熱交換器や、各種の冷凍サイクルに適用することができる。 The flat tubes of the heat exchanger of the present invention can be applied to heat exchangers mounted on automobiles and various refrigeration cycles.

本発明の一具体例に係り、偏平チューブの斜視断面図である。FIG. 2 is a perspective sectional view of a flat tube according to one embodiment of the present invention. 偏平チューブの平面図である。It is a top view of a flat tube. 偏平チューブの正面図である。It is a front view of a flat tube. プレートの正面図である。It is a front view of a plate. ヘッダタンクのチューブ挿入孔を示す正面図である。It is a front view which shows the tube insertion hole of a header tank. 偏平チューブの製造工程を示す概略図である。It is the schematic which shows the manufacturing process of a flat tube. （ａ）〜（ｄ）は折曲げロール及び型ロールによる偏平チューブの形成状況を示す正面図である。(A)-(d) is a front view which shows the formation state of the flat tube by a bending roll and a mold roll. 従来の偏平チューブを示す斜視断面図である。It is a perspective sectional view showing the conventional flat tube.

符号の説明Explanation of reference numerals

１　　　　　偏平チューブ
２　　　　　プレート
２ａ　　　　　プレート端部
３　　　　　あぜ状の凹部 DESCRIPTION OF SYMBOLS 1 Flat tube 2 Plate 2a Plate end part 3 Concave recess

Claims (1)

ロール成形により、長手方向に伸延する複数の流路が形成されるとともに、所定長さに切断された熱交換器の偏平チューブにおいて、
　横断面外形形状が左右対称形に形成され、且つ、隣り合う流路間に連通路が形成されていることを特徴とする熱交換器の偏平チューブ。 By roll forming, a plurality of flow paths extending in the longitudinal direction are formed, and in the flat tube of the heat exchanger cut to a predetermined length,
A flat tube for a heat exchanger, wherein a cross-sectional outer shape is formed symmetrically and a communication passage is formed between adjacent flow paths.
JP2003408110A 2003-12-05 2003-12-05 Heat exchanger flat tube Expired - Fee Related JP3735103B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003408110A JP3735103B2 (en) 2003-12-05 2003-12-05 Heat exchanger flat tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003408110A JP3735103B2 (en) 2003-12-05 2003-12-05 Heat exchanger flat tube

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2001364803A Division JP2002195771A (en) 2001-11-29 2001-11-29 Flat tube of heat exchanger

Publications (2)

Publication Number Publication Date
JP2004125392A true JP2004125392A (en) 2004-04-22
JP3735103B2 JP3735103B2 (en) 2006-01-18

Family

ID=32291174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003408110A Expired - Fee Related JP3735103B2 (en) 2003-12-05 2003-12-05 Heat exchanger flat tube

Country Status (1)

Country Link
JP (1) JP3735103B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010123195A2 (en) * 2009-04-20 2010-10-28 주식회사 경동나비엔 Heat exchanger

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57136093A (en) * 1981-02-18 1982-08-21 Hitachi Ltd Flat type heat transfer pipe and production thereof
JPH03155422A (en) * 1989-11-14 1991-07-03 Calsonic Corp Heat transfer tube for heat exchanger and its manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57136093A (en) * 1981-02-18 1982-08-21 Hitachi Ltd Flat type heat transfer pipe and production thereof
JPH03155422A (en) * 1989-11-14 1991-07-03 Calsonic Corp Heat transfer tube for heat exchanger and its manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010123195A2 (en) * 2009-04-20 2010-10-28 주식회사 경동나비엔 Heat exchanger
WO2010123195A3 (en) * 2009-04-20 2010-12-16 주식회사 경동나비엔 Heat exchanger

Also Published As

Publication number Publication date
JP3735103B2 (en) 2006-01-18

Similar Documents

Publication Publication Date Title
JP2005326135A (en) Heat exchanger
JP3329906B2 (en) Flat tubes of heat exchanger
JP5861549B2 (en) Tube and heat exchanger provided with the tube
JPH09126684A (en) Manufacture of heat exchanger and header pipe used for heat exchanger
JP2007147172A (en) Heat exchanger
JP2006522306A (en) Heat transfer body
JPH09280754A (en) Heat exchanger
JP3870865B2 (en) Heat exchanger
JPH09250896A (en) Heat exchanger
WO2020095797A1 (en) Heat exchanger and method for manufacturing heat exchanger
JP2007032952A (en) Header tank for heat exchanger, and heat exchanger using the same
JP4726692B2 (en) Refrigerant condenser with receiver
JPH0712772U (en) Flat tube for heat exchanger
JP2004125392A (en) Flat tube for heat exchanger
JP2006337005A (en) Tube for heat exchanger
JP4280133B2 (en) Heat exchanger
JP5167930B2 (en) Heat exchanger
JP2000346585A (en) Heat exchanger
JPH11101594A (en) Heat exchanger for air-conditioning
JP2009287907A (en) Heat exchanger
JP2010032128A (en) Tube for heat exchanger
CN218511545U (en) Heat exchanger
JP2002195771A (en) Flat tube of heat exchanger
JP2005083700A (en) Heat exchange tube
JPH07305992A (en) Header tank for heat exchanger

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20031226

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20031226

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050405

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050602

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050628

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050826

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: 20050920

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20051020

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

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: 20081028

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20091028

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20091028

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20101028

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20101028

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20111028

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20111028

Year of fee payment: 6

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: 20111028

Year of fee payment: 6

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees