JPH049996B2 - - Google Patents
Info
- Publication number
- JPH049996B2 JPH049996B2 JP59030148A JP3014884A JPH049996B2 JP H049996 B2 JPH049996 B2 JP H049996B2 JP 59030148 A JP59030148 A JP 59030148A JP 3014884 A JP3014884 A JP 3014884A JP H049996 B2 JPH049996 B2 JP H049996B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- tube
- fluid
- heat
- heat transfer
- 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 - Lifetime
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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
- F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
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
【発明の詳細な説明】
本発明は空調機用熱交換器、空冷熱交換器、そ
の他空気熱交換器全体に適用する熱交換器に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat exchanger for use in air conditioners, air-cooled heat exchangers, and other air heat exchangers as a whole.
従来例（その１）を説明すると、空調機用熱交
換器などの小形熱交換器では第１図に示すように
同じ長さの複数の伝熱管０１を平行に、かつ鉛直
方向に設置し、隣合う伝熱管０１の間をＵ字形の
連絡管０６で接続するか、伝熱管０１の端部をＵ
字形に折り曲げて構成されている。なお伝熱管０
１の最両端にはヘツド０２を設置している。この
ような伝熱管０１では隣合う伝熱管０１の間にフ
イン０３を設置する。管内の流体は矢印０５の方
向に流入し伝熱管０１に沿つて流れ、管外流体は
矢印０４で示すように流れ伝熱管０１と直角方向
に流れている。 To explain the conventional example (Part 1), in a small heat exchanger such as a heat exchanger for an air conditioner, a plurality of heat transfer tubes 01 of the same length are installed in parallel and vertically as shown in Fig. 1. Connect adjacent heat exchanger tubes 01 with a U-shaped connecting tube 06, or connect the ends of the heat exchanger tubes 01 with a U-shaped connecting tube 06.
It is constructed by folding it into a letter shape. In addition, heat exchanger tube 0
A head 02 is installed at both ends of the head 1. In such heat exchanger tubes 01, fins 03 are installed between adjacent heat exchanger tubes 01. The fluid inside the tube flows in the direction of arrow 05 and flows along the heat exchanger tube 01, and the fluid outside the tube flows in the direction perpendicular to the heat exchanger tube 01 as shown by arrow 04.
第１図において、伝熱管０１内の入口部では気
体又は気液二相の管内流体が流れ、伝熱管０１に
沿つて流れるに伴つて、管内液体には破線の矢印
で図示する如く下降流部０７と上昇流部０８が生
じる。管外流体は矢印０４の如く伝熱管０１と直
角方向に流れ、フイン０３、伝熱管０１を介して
管内流体と熱交換し、管内流体は冷却されて凝縮
し、液体となり、管外流体は加熱される。 In FIG. 1, gas or gas-liquid two-phase fluid flows at the inlet of the heat transfer tube 01, and as it flows along the heat transfer tube 01, the liquid in the tube has a downward flow section as shown by the broken line arrow. 07 and an upward flow section 08 are generated. The fluid outside the tube flows in a direction perpendicular to the heat transfer tube 01 as shown by arrow 04, and exchanges heat with the fluid inside the tube via the fins 03 and the heat transfer tube 01. The fluid inside the tube is cooled and condensed to become a liquid, and the fluid outside the tube is heated. be done.
第２図は管内流体の熱伝達特性と圧力損失とを
管内流体の流量を変数として示したグラフで、管
内流体が冷却されて凝縮する場合、上昇流部と下
降流部とでは上昇流の熱伝達率Ｈが下降流の熱伝
達率H′よりも低く、かつ上昇流の圧力損失Ｐが
下降流の圧力損失P′よりも大きい。従つて上昇流
部は能率が悪く、多くの伝熱管を必要とし、コス
ト高となる欠点がある。 Figure 2 is a graph showing the heat transfer characteristics and pressure loss of the fluid in the pipe using the flow rate of the fluid in the pipe as a variable. The heat transfer coefficient H is lower than the heat transfer coefficient H' of the downward flow, and the pressure loss P of the upward flow is greater than the pressure loss P' of the downward flow. Therefore, the upflow section has the disadvantage that it is inefficient, requires a large number of heat exchanger tubes, and is expensive.
従来例（その２）を第３図により説明すると、
複数の同じ長さの伝熱管０１１は鉛直方向に配置
され、その上、下端にはそれぞれヘツダ０１２が
設置され、各ヘツダ０１２の前後には分配ヘツダ
０１４、集合ヘツダ０１６がそれぞれ設置され
る。隣合う伝熱管０１１の間には多数のフイン０
１３が設置されている。 The conventional example (part 2) will be explained with reference to Fig. 3.
A plurality of heat exchanger tubes 011 having the same length are arranged in the vertical direction, and headers 012 are installed at the upper and lower ends of the heat exchanger tubes 011, respectively, and a distribution header 014 and a collection header 016 are installed before and after each header 012, respectively. There are many fins 0 between adjacent heat exchanger tubes 011.
13 are installed.
管内流体は矢印０１５の方向に流れ、分配ヘツ
ダ０１４より各ヘツダ０１２に分配され、伝熱管
０１１に沿つて破線矢印０１７の如く下向きに流
れ、凝縮液化した後、集合ヘツダ０１６に集めら
れる。なお管外流体は矢印０１９の如く伝熱管０
１１と直角方向に流れ、フイン０１３、伝熱管０
１１を介して管内流体と熱交換される。 The fluid in the tube flows in the direction of arrow 015, is distributed from distribution header 014 to each header 012, flows downward along heat transfer tube 011 as shown by dashed arrow 017, and is collected in collection header 016 after being condensed and liquefied. Note that the fluid outside the tube is connected to the heat transfer tube 0 as shown by arrow 019.
Flows in a direction perpendicular to 11, fins 013, heat exchanger tubes 0
11, heat is exchanged with the fluid in the pipe.
上記装置は下降流のみで能率がよいが構造が複
雑となりコスト高となる欠点がある。 Although the above-mentioned device is efficient because it uses only a downward flow, it has the drawback that the structure is complicated and the cost is high.
本発明の目的は管内流体が上昇および下降を繰
返す熱交換器において、熱伝達性能の不利な上昇
部分を少なくし、下降部分を増すことにより良好
な伝熱特性が得られ、伝熱管の長さ、又は本数が
減少でき、コンパクトで安価な高性能の熱交換器
を提供することにある。 The purpose of the present invention is to reduce the rising part, which is disadvantageous to heat transfer performance, and increase the falling part, in a heat exchanger in which the fluid in the tube rises and falls repeatedly, to obtain good heat transfer characteristics, and to reduce the length of the heat transfer tube. Another object of the present invention is to provide a compact, inexpensive, and high-performance heat exchanger that can reduce the number of heat exchangers.
本発明を添付図面の第４図の実施例により説明
する。複数の伝熱管１を平行に、かつ鉛直方向に
設置し、隣合う伝熱管の間をＵ字形の連絡管６で
接続するか、伝熱管の端部をＵ字形に折り曲げて
構成する。 The invention will be explained by the embodiment shown in FIG. 4 of the accompanying drawings. A plurality of heat exchanger tubes 1 are installed in parallel and vertically, and adjacent heat exchanger tubes are connected by U-shaped communication tubes 6, or the ends of the heat exchanger tubes are bent into a U-shape.
伝熱管１の最両端にはヘツダ２を設置し、又隣
合う伝熱管の間にフイン３を設置する。管内の流
体は矢印５の方向に流入し、伝熱管に沿つて流
れ、管外流体は矢印４の方向に伝熱管と直角方向
に流れている。 Headers 2 are installed at both ends of the heat exchanger tubes 1, and fins 3 are installed between adjacent heat exchanger tubes. The fluid inside the tube enters in the direction of arrow 5 and flows along the heat transfer tube, and the fluid outside the tube flows in the direction of arrow 4, perpendicular to the heat transfer tube.
伝熱管の中、下降部分１Ａは上昇部分１Ｂより
長くしてある。 In the heat exchanger tube, the descending portion 1A is longer than the ascending portion 1B.
管内流体は下降部分１Ａにおいて下降流７が管
外流体と長さＬだけ接触し、又上昇部分１Ｂにお
いて上昇流８が管外流体と長さｌだけ接触して、
Ｌ＞ｌで下降部分１Ａは多く熱交換し凝縮液化も
多くなる。 The fluid within the pipe has a descending flow 7 in contact with the extra-tubular fluid for a length L in the descending portion 1A, and an ascending flow 8 in contact with the extra-tubular fluid for a length l in the ascending portion 1B.
When L>l, the descending portion 1A exchanges a lot of heat and condenses and liquefies a lot.
本発明は上記の構成であり、下降部分１Ａが上
昇部分１Ｂに比較して長くしたので、熱交換が多
くなつたので、従来例（その１）に比べ良好な伝
熱特性が得られ、伝熱管の長さ又は本数が減少で
き、従来例（その２）に比べてコンパクトで、安
価な高性能の熱交換器を得ることができるように
なつた。 The present invention has the above configuration, and since the descending portion 1A is longer than the ascending portion 1B, heat exchange is increased, so better heat transfer characteristics can be obtained compared to the conventional example (part 1). The length or number of heat tubes can be reduced, making it possible to obtain a high-performance heat exchanger that is more compact and inexpensive than the conventional example (part 2).
第１図は従来例の斜視図、第２図は管内流体の
熱伝達特性および圧力損失と流量との関係を示す
グラフ、第３図は他の従来例を示す斜視図、第４
図は本発明の熱交換器の実施例を示す斜視図であ
る。
１……伝熱管、１Ａ……下降部分、１Ｂ……上
昇部分、２……ヘツダ、３……フイン、６……連
絡管、７……下降流、８……上昇流。
FIG. 1 is a perspective view of a conventional example, FIG. 2 is a graph showing the heat transfer characteristics of the fluid in the pipe and the relationship between pressure loss and flow rate, FIG. 3 is a perspective view of another conventional example, and FIG.
The figure is a perspective view showing an embodiment of the heat exchanger of the present invention. DESCRIPTION OF SYMBOLS 1... Heat exchanger tube, 1A... Descending part, 1B... Rising part, 2... Header, 3... Fin, 6... Connecting pipe, 7... Downflow, 8... Upward flow.
Claims (1)
直方向に配設すると共に伝熱管外周にフインを設
け、該伝熱管内を上昇、下降を繰返しながら流れ
る管内流体を管外流体と熱交換させて凝縮液化す
る熱交換器において、前記伝熱管の下降部分の長
さを上昇部分の長さより長くしたことを特徴とす
る熱交換器。1 A heat exchanger tube is formed in a meandering shape, the straight portion thereof is arranged vertically, and fins are provided on the outer periphery of the heat exchanger tube, and the fluid inside the tube that repeatedly rises and descends inside the heat exchanger tube exchanges heat with the fluid outside the tube. 1. A heat exchanger that condenses and liquefies the heat exchanger, characterized in that the length of the descending portion of the heat transfer tube is longer than the length of the ascending portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3014884A JPS60175993A (en) | 1984-02-22 | 1984-02-22 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3014884A JPS60175993A (en) | 1984-02-22 | 1984-02-22 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60175993A JPS60175993A (en) | 1985-09-10 |
| JPH049996B2 true JPH049996B2 (en) | 1992-02-21 |
Family
ID=12295678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3014884A Granted JPS60175993A (en) | 1984-02-22 | 1984-02-22 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60175993A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57142271U (en) * | 1981-03-03 | 1982-09-06 |
-
1984
- 1984-02-22 JP JP3014884A patent/JPS60175993A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60175993A (en) | 1985-09-10 |
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