JP3223218B2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JP3223218B2 JP3223218B2 JP24995993A JP24995993A JP3223218B2 JP 3223218 B2 JP3223218 B2 JP 3223218B2 JP 24995993 A JP24995993 A JP 24995993A JP 24995993 A JP24995993 A JP 24995993A JP 3223218 B2 JP3223218 B2 JP 3223218B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- refrigerant tube
- straight pipe
- hole
- heat exchanger
- 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
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (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、冷蔵庫及び冷凍ショー
ケースの蒸発器などに使用されるプレートフィン形の熱
交換器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate fin type heat exchanger used for an evaporator of a refrigerator and a freezer showcase.
【０００２】[0002]
【従来の技術】一般に、並列状に配置した複数のプレー
トフィンに複数の冷媒チューブ挿入用長孔を穿設すると
共に、これら長孔中に、蛇行状冷媒チューブのＵ字状に
曲げた曲管部を挿通し、この蛇行状冷媒チューブの直管
部を長孔の両端受入孔に圧入してなる熱交換器は知られ
ている（実公昭５９−２３９６１号）。2. Description of the Related Art In general, a plurality of long holes for inserting refrigerant tubes are formed in a plurality of plate fins arranged in parallel, and a curved tube bent in a U-shape of a meandering refrigerant tube is formed in these long holes. A heat exchanger is known in which the straight pipe portion of the meandering refrigerant tube is inserted into the receiving holes at both ends of a long hole (Japanese Utility Model Publication No. 59-23961).
【０００３】この種のものでは、冷凍機のエバポレータ
に使用される際、プレートフィンに着霜し、プレートフ
ィン間に霜によるブリッジが形成され、これにより空気
の通りが悪くなって、熱効率が低下するという問題があ
る。[0003] In this type, when used in an evaporator of a refrigerator, frost is formed on the plate fins, and a bridge due to frost is formed between the plate fins. There is a problem of doing.
【０００４】[0004]
【発明が解決しようとする課題】これを解消するため
に、従来、種々の対策を講じているが、いずれの手段も
決め手を欠いている。In order to solve this problem, various measures have conventionally been taken, but none of the measures is decisive.
【０００５】そこで、本発明の目的は、上述した従来の
技術が有する問題点を解消し、プレートフィン間での着
霜によるブリッジの形成を、簡単な構成により防止する
ことのできる熱交換器を提供することにある。Accordingly, an object of the present invention is to provide a heat exchanger which solves the above-mentioned problems of the prior art and can prevent the formation of bridges due to frost between plate fins with a simple structure. To provide.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、並列状に配置した複数のプレートフィン
に複数の冷媒チューブ挿入用長孔を穿設すると共に、こ
れら長孔中に蛇行状冷媒チューブのＵ字状に曲げた曲管
部を挿通し、この蛇行状冷媒チューブの直管部を長孔の
両端受入孔に圧入してなる熱交換器において、長孔の両
端受入孔にカラー部を設け、このカラー部の直管部への
圧接力は、気流入側の受入孔の周縁部が最も弱く、気流
出側の受入孔の周縁部に向けて徐々に強くなるように設
定されていることを特徴とするものである。In order to achieve the above-mentioned object, the present invention provides a plurality of plate fins arranged in parallel with a plurality of elongated holes for inserting a refrigerant tube, and a plurality of elongated holes for inserting refrigerant tubes therein. In a heat exchanger in which a U-shaped bent tube portion of a meandering refrigerant tube is inserted and a straight tube portion of the meandering refrigerant tube is press-fitted into both end receiving holes of the long hole, the both end receiving holes of the long hole are provided. A collar portion is provided, and the pressing force of the collar portion against the straight pipe portion is such that the peripheral portion of the receiving hole on the air inflow side is weakest and gradually increases toward the peripheral portion of the receiving hole on the air outflow side. It is characterized by being set.
【０００７】[0007]
【作用】本発明によれば、長孔の両端受入孔の周縁部に
カラー部が形成されており、このカラー部の直管部への
圧接力は、気流入側の受入孔の周縁部が最も弱く、気流
出側の受入孔の周縁部に向けて徐々に強くなるよう設定
されているので、チューブとプレートフィンとの間の伝
熱効率が、気流入側の受入孔の周縁部に向けて徐々に低
下するので、気流入側における着霜が小さくなって、そ
の部分でのブリッジの形成が抑えられる。According to the present invention, the collar portion is formed at the peripheral portion of the receiving hole at both ends of the elongated hole, and the pressing force of the collar portion against the straight pipe portion is reduced by the peripheral portion of the receiving hole on the air inflow side. Since it is set to be weakest and gradually become stronger toward the periphery of the receiving hole on the air outflow side, the heat transfer efficiency between the tube and the plate fins is reduced toward the periphery of the receiving hole on the air inflow side. Since the temperature gradually decreases, the formation of frost on the air inflow side is reduced, and the formation of a bridge at that portion is suppressed.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図１及び図６を参
照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.
【０００９】図１において、符号１はサーペンタイン曲
げしたアルミニウム製の冷媒チューブを示しており、こ
の冷媒チューブ１の直管部１ａ，１ａ…１ａにはアルミ
ニウム製のサイドプレート３と、同じくアルミニウム製
の複数のプレートフィン５とが配されている。このプレ
ートフィン５には３種類の長さのものが用意されてお
り、それぞれのプレートフィン５は気流方向に向けて疎
から密になるように配置されている。In FIG. 1, reference numeral 1 denotes a serpentine-bent aluminum refrigerant tube. The straight tube portions 1a, 1a... 1a of the refrigerant tube 1 have an aluminum side plate 3 and a similarly aluminum aluminum tube. A plurality of plate fins 5 are arranged. The plate fins 5 are provided in three different lengths, and the plate fins 5 are arranged so as to be sparse to dense in the airflow direction.
【００１０】この種のものは直管部１ａと曲管部１ｂと
が連続するように、冷媒チューブ１をサーペンタイン曲
げしておくと共に、図２に示すように、サイドプレート
３とプレートフィン５とに予め長孔７を形成しておき、
この長孔７中に上記冷媒チューブ１を挿入して形成され
る。In this type, the refrigerant tube 1 is serpentine-bent so that the straight tube portion 1a and the curved tube portion 1b are continuous, and as shown in FIG. To form a long hole 7 in advance,
The refrigerant tube 1 is formed by inserting the refrigerant tube 1 into the elongated hole 7.
【００１１】即ち、プレートフィン５の長孔７は、冷媒
チューブ１の直管部１ａの外径よりも小さくかつ曲管部
１ｂの外径よりも大きな孔幅を有するように形成され、
この長孔７の両端には、冷媒チューブ１の直管部１ａを
保持する受入孔７ａが形成されている。そしてこれを組
立てるには、プレートフィン５を平行に並べて、これら
プレートフィン５のそれぞれの長孔７を整合させた後
に、この整合された長孔７内に冷媒チューブ１を嵌め込
んで組立てる。That is, the long hole 7 of the plate fin 5 is formed so as to have a hole width smaller than the outer diameter of the straight tube portion 1a of the refrigerant tube 1 and larger than the outer diameter of the curved tube portion 1b.
At both ends of the elongated hole 7, receiving holes 7a for holding the straight pipe portion 1a of the refrigerant tube 1 are formed. In order to assemble the plate fins, the plate fins 5 are arranged in parallel, the elongated holes 7 of the plate fins 5 are aligned, and the refrigerant tube 1 is fitted into the aligned elongated holes 7 and assembled.
【００１２】これによれば冷媒チューブ１の曲管部１ｂ
の厚さは長孔７の孔幅よりも小さいので、曲管部１ｂは
すべてのプレートフィン５の長孔７を貫通して嵌め込ま
れ、これを嵌め込んだ後には、長孔７の両端に形成され
た受入孔７ａ内に冷媒チューブ１の直管部１ａがぴった
りと嵌合される。According to this, the curved tube portion 1b of the refrigerant tube 1
Is smaller than the width of the long hole 7, the curved tube portion 1b is fitted through all the long holes 7 of the plate fins 5, and after being fitted, both ends of the long hole 7 The straight tube portion 1a of the refrigerant tube 1 fits exactly into the formed receiving hole 7a.
【００１３】プレートフィン５には長孔７のほかに複数
のリブ９が設けられている。このリブ９はいわゆるフィ
ン補強用のものであって、図３に示すように、長孔７の
間に設けられており、互いに凹凸状にプレス成形されて
いる。The plate fins 5 are provided with a plurality of ribs 9 in addition to the elongated holes 7. The ribs 9 are for reinforcing the fins, and are provided between the long holes 7 as shown in FIG.
【００１４】しかして、この実施例によれば、長孔７の
受入孔７ａの周縁にカラー部１１が形成されている。こ
のカラー部１１は、図４に示すように、フィン５の一方
の面側に突出する折曲部１１ａと、この折曲部１１ａの
内周縁に連なり他方の面側に向けて突出する弾発部１１
ｂとからなり、かつ断面がほぼＶ字状に折り曲げられて
おり、受入孔７ａに直管部１ａを圧入するに際しては、
弾発部１１ｂが受入孔７ａの半径方向の外方に弾発し、
直管部１ａ圧入の後には、弾発部１１ｂが半径方向の内
方に復元して直管部１ａの外周に圧接するようになって
いる。Thus, according to this embodiment, the collar portion 11 is formed on the periphery of the receiving hole 7a of the long hole 7. As shown in FIG. 4, the collar portion 11 has a bent portion 11a protruding on one surface side of the fin 5 and a resilient spring connected to the inner peripheral edge of the bent portion 11a and protruding toward the other surface side. Part 11
b, and the cross section thereof is bent substantially in a V-shape. When the straight pipe portion 1a is press-fitted into the receiving hole 7a,
The resilient portion 11b repels radially outward of the receiving hole 7a,
After the press-fitting of the straight pipe portion 1a, the resilient portion 11b is restored inward in the radial direction and pressed against the outer periphery of the straight pipe portion 1a.
【００１５】即ち、弾発部１１ｂは折曲部１１ａの内周
縁に連なるように形成されているので、折曲部１１ａは
クッションの役割を果たし、よって弾発部１１ｂの復元
力は協力になり、復元後には直管部１ａの外周を強固に
保持する。That is, since the resilient portion 11b is formed so as to be continuous with the inner peripheral edge of the bent portion 11a, the bent portion 11a functions as a cushion, so that the restoring force of the resilient portion 11b cooperates. After the restoration, the outer periphery of the straight pipe portion 1a is firmly held.
【００１６】このようなカラー部１１にあっては、直管
部への圧接力の増大に伴って、カラー部１１に無理な力
が加わるので、折損という問題が生じる。In such a collar portion 11, an unreasonable force is applied to the collar portion 11 with an increase in the pressing force against the straight pipe portion, so that a problem of breakage occurs.
【００１７】この問題を考え合わせた上で、カラー部１
１の望ましい形状を考察すると、図５を参照して、Ａ寸
法、Ｂ寸法は、つぎのように設定される。Considering this problem, the color unit 1
Considering one desirable shape, referring to FIG. 5, the dimensions A and B are set as follows.
【００１８】（ｄ−１）mm＜Ａ＜（ｄ−１．５）mm （ｄ＋０．５）mm＜Ｂ＜（ｄ＋１）mm ここで、（ｄ）mmは直管部１ａの直径である。(D-1) mm <A <(d-1.5) mm (d + 0.5) mm <B <(d + 1) mm where (d) mm is the diameter of the straight pipe portion 1a.
【００１９】また、図６を参照して、冷媒チューブ１の
曲管部１ｂの曲げ幅をｗとした場合に、Ｄ寸法は、つぎ
のように設定される。Referring to FIG. 6, when the bending width of bent portion 1b of refrigerant tube 1 is w, the dimension D is set as follows.
【００２０】（ｗ）mm＜Ｄ＜（ｗ＋１．５）mm ここで、Ｄ寸法は、カラー部１１を構成する弾発部１１
ｂの内周間寸法。(W) mm <D <(w + 1.5) mm Here, the dimension D is the size of the resilient portion 11 constituting the collar portion 11.
The inner circumference dimension of b.
【００２１】また、カラー部１１の折返し角度θは０°
〜３０°が好ましい。さらに折曲部１１ａには適度な曲
げＲ1 を付けることが好ましい。The turning angle θ of the collar portion 11 is 0 °.
~ 30 ° is preferred. Further it is preferable to apply an appropriate bending R 1 is bent portion 11a.
【００２２】尚、上記の熱交換器では、組み立てに際し
て、冷媒チューブ１を長孔７内に押し込むための制作治
具として、冷媒チューブ１とほぼ同程度の厚さを有する
マンドレル（図示せず）が使用される。この時のマンド
レルの厚さＥは、つぎのように設定される。In the above heat exchanger, a mandrel (not shown) having a thickness substantially equal to that of the refrigerant tube 1 is used as a production jig for pushing the refrigerant tube 1 into the long hole 7 during assembly. Is used. The thickness E of the mandrel at this time is set as follows.
【００２３】（ｗ−２ｄ−１）mm＜Ｅ＜（ｗ−２ｄ）mm このように構成されたものにおいて、この実施例によれ
ば、図７ａ〜ｃに示すように、カラー部１１の直管部１
ａへの圧接力は、気流入側（図２の下方部）の受入孔の
周縁部が最も弱く、（図７ａ）気流出側（図２の上方
部）の受入孔の周縁部が最も強く（図７ｃ）、しかも圧
接力は気流入側に向けて徐々に弱くなるよう設定され
る。(W−2d−1) mm <E <(w−2d) mm In this embodiment, according to this embodiment, as shown in FIGS. Tube part 1
The pressure contact force to a is the weakest at the periphery of the receiving hole on the air inflow side (lower part in FIG. 2), and the strongest at the periphery of the receiving hole on the air outflow side (upper part in FIG. 2) (FIG. 7a). (FIG. 7c) In addition, the pressing force is set so as to gradually decrease toward the air inflow side.
【００２４】例えば、図２を参照して、プレートフィン
５を気流出側から気流入側に向かって、ｘ，ｙ，ｚの３
つの領域に分ける。For example, referring to FIG. 2, the plate fins 5 are moved from the air outflow side to the air inflow side in the order of x, y, z.
Divided into two areas.
【００２５】そして、直管部１ａの外径をφ７．０mmと
した時、ｘ，ｙ，ｚの３つの領域にあるカラー部１１の
寸法を、図７ａ〜ｃに示すように、具体的にはつぎのよ
うに設定する。When the outer diameter of the straight pipe portion 1a is φ7.0 mm, the dimensions of the collar portion 11 in the three regions of x, y, and z are specifically shown in FIGS. Is set as follows.
【００２６】 ｘ領域 （Ａ寸法＝６．８mm Ｂ寸法＝７．０mm） ｙ領域 （Ａ寸法＝６．９mm Ｂ寸法＝７．１mm） ｘ領域 （Ａ寸法＝７．０mm Ｂ寸法＝７．２mm） ただし、Ａ寸法、Ｂ寸法は図５を参照のこと。X area (A size = 6.8 mm B size = 7.0 mm) y area (A size = 6.9 mm B size = 7.1 mm) x area (A size = 7.0 mm B size = 7.2 mm) However, refer to Fig. 5 for the dimensions A and B.
【００２７】これによれば、ｘ領域からｙ領域、さらに
はｚ領域に向けて、順に上述の圧接力が弱くなるので、
チューブ１とプレートフィン５との間の伝熱効率が、ｚ
領域（気流入側）に向けて徐々に低下するので、ｚ領域
における着霜が小さくなって、その部分でのブリッジの
形成が抑えられる。According to this, the above-mentioned pressing force is weakened in order from the x region to the y region and further to the z region.
The heat transfer efficiency between the tube 1 and the plate fin 5 is z
Since the temperature gradually decreases toward the region (air inflow side), frost formation in the z region is reduced, and the formation of a bridge in that portion is suppressed.
【００２８】尚、それとは反対に、ｘ領域では圧接力が
強めであり、ｚ領域で失う伝熱効率が補われる。これに
よれば、着霜による目詰まりが防止されると共に、ｘ領
域からｙ領域、さらにはｚ領域に向けてバランスよく着
霜する。On the contrary, in the x region, the pressure contact force is strong, and the heat transfer efficiency lost in the z region is compensated. According to this, clogging due to frost is prevented, and frost is formed in a well-balanced manner from the x region to the y region and further to the z region.
【００２９】[0029]
【発明の効果】以上の説明から明らかなように、本発明
によれば、気流出側から気流入側に向けて、チューブ
（直管部）とプレートフィン（カラー部）との圧接力が
徐々に弱くなるので、プレートフィンの気流入側にブリ
ッジが形成されることはなく、バランスよく着霜する。As is clear from the above description, according to the present invention, the press-contact force between the tube (straight pipe portion) and the plate fin (collar portion) gradually increases from the air outflow side to the air inflow side. Therefore, no bridge is formed on the air inflow side of the plate fin, and frost is formed in a well-balanced manner.
【図１】本発明による熱交換器の一実施例を示す正面図
である。FIG. 1 is a front view showing one embodiment of a heat exchanger according to the present invention.
【図２】同じくプレートフィンを示す平面図である。FIG. 2 is a plan view showing a plate fin.
【図３】図２のIII −III 断面図である。FIG. 3 is a sectional view taken along the line III-III of FIG. 2;
【図４】図２のVI −VI断面図である。FIG. 4 is a sectional view taken along line VI-VI of FIG. 2;
【図５】カラー部の形状を示す断面図である。FIG. 5 is a sectional view showing a shape of a collar portion.
【図６】カラー部の形状を示す平面図である。FIG. 6 is a plan view showing a shape of a collar portion.
【図７】ａ，ｂ，ｃはカラー部と直管部との圧接状態を
示す図である。FIGS. 7 (a), 7 (b) and 7 (c) are views showing a press-contact state between a collar portion and a straight pipe portion.
１ 冷媒チューブ １ａ 直管部 ５ プレートフィン ７ 長孔 １１ カラー部 １１ａ 折曲部 １１ｂ 弾発部 DESCRIPTION OF SYMBOLS 1 Refrigerant tube 1a Straight pipe part 5 Plate fin 7 Elongated hole 11 Collar part 11a Bent part 11b Elastic part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−87480（ＪＰ，Ａ) 特開 平４−86491（ＪＰ，Ａ) 特開 昭63−150589（ＪＰ，Ａ) 特開 昭63−87568（ＪＰ，Ａ) 実開 昭57−114264（ＪＰ，Ｕ) 実開 昭58−66287（ＪＰ，Ｕ) 実開 昭62−34676（ＪＰ，Ｕ) 実開 昭61−58589（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 39/02 F28F 1/32 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-5-87480 (JP, A) JP-A-4-86491 (JP, A) JP-A-63-150589 (JP, A) JP-A-63- 87568 (JP, A) Fully open 1982-114264 (JP, U) Fully open 1983-66287 (JP, U) Fully open, 62-34676 (JP, U) Fully open, 61-58589 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) F25B 39/02 F28F 1/32
Claims (1)
に複数の冷媒チューブ挿入用長孔を穿設すると共に、こ
れら長孔中に蛇行状冷媒チューブのＵ字状に曲げた曲管
部を挿通し、この蛇行状冷媒チューブの直管部を長孔の
両端受入孔に圧入してなる熱交換器において、 前記長孔の両端受入孔にカラー部を設け、このカラー部
の前記直管部への圧接力は、気流入側の受入孔の周縁部
が最も弱く、気流出側の受入孔の周縁部に向けて徐々に
強くなるよう設定されていることを特徴とする熱交換
器。1. A plurality of refrigerant tube insertion slots are formed in a plurality of plate fins arranged in parallel, and a U-shaped curved tube portion of a meandering refrigerant tube is inserted into these slots. In the heat exchanger formed by press-fitting the straight pipe portion of the meandering refrigerant tube into both end receiving holes of the long hole, a collar portion is provided at both end receiving holes of the long hole, and the straight pipe portion of the collar portion is provided. Wherein the pressure contact force is set to be weakest at the periphery of the inlet hole on the air inflow side and gradually increased toward the periphery of the reception hole on the air outflow side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24995993A JP3223218B2 (en) | 1993-09-10 | 1993-09-10 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24995993A JP3223218B2 (en) | 1993-09-10 | 1993-09-10 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0783538A JPH0783538A (en) | 1995-03-28 |
| JP3223218B2 true JP3223218B2 (en) | 2001-10-29 |
Family
ID=17200737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24995993A Expired - Fee Related JP3223218B2 (en) | 1993-09-10 | 1993-09-10 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3223218B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7488389B2 (en) | 2017-08-31 | 2024-05-21 | 第一三共株式会社 | Novel method for producing antibody-drug conjugates |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101903736A (en) * | 2007-12-18 | 2010-12-01 | 开利公司 | Heat exchanger for shedding water |
| KR100971356B1 (en) * | 2008-04-25 | 2010-07-20 | 엘에스엠트론 주식회사 | Cooler for automobile oil and manufacturing method thereof |
| JP5938565B2 (en) * | 2014-08-29 | 2016-06-22 | パナソニックＩｐマネジメント株式会社 | Heat exchanger and cooling system and refrigerator using the same |
-
1993
- 1993-09-10 JP JP24995993A patent/JP3223218B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7488389B2 (en) | 2017-08-31 | 2024-05-21 | 第一三共株式会社 | Novel method for producing antibody-drug conjugates |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0783538A (en) | 1995-03-28 |
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