JPS633184A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPS633184A JPS633184A JP14534686A JP14534686A JPS633184A JP S633184 A JPS633184 A JP S633184A JP 14534686 A JP14534686 A JP 14534686A JP 14534686 A JP14534686 A JP 14534686A JP S633184 A JPS633184 A JP S633184A
- Authority
- JP
- Japan
- Prior art keywords
- row
- air
- heat exchanger
- group
- fin
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000010257 thawing Methods 0.000 abstract description 5
- 102220023217 rs387907538 Human genes 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は空調機や冷蔵庫等に用いる熱交換器に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchanger used in air conditioners, refrigerators, and the like.
従来の技術
けられその間を空気が矢印２方向に流動するフィン群３
から構成されており、伝熱管群１，１′の段ピッチＬ１
は列に関係なく１列目、２列目で等しくなっていた。Conventional technology Fin group 3 between which air flows in the two directions of arrows
The stage pitch L1 of the heat exchanger tube groups 1 and 1' is
was equal in the first and second columns regardless of the column.
発明が解決しようとする問題点
しかしながら上記のような構成では、着霜条件下で使用
した場合、周囲温度と熱交換器伝熱Ｉ温度に相当する飽
和湿り空気の絶対湿度差が最も大きい空気流入側の１列
目の伝熱管群１とフィン群３の着霜量が２列目１′に比
べて多く、短時間でフィン間が閉塞されるので、通過風
量が減少して熱交換量が短時間で著しく低下するという
問題を有していた。Problems to be Solved by the Invention However, in the above configuration, when used under frost conditions, the air inflow has the largest absolute humidity difference between the ambient temperature and the saturated humid air corresponding to the heat exchanger heat transfer I temperature. The amount of frost on the heat exchanger tube group 1 and fin group 3 in the first row on the side is larger than that on the second row 1', and the spaces between the fins are blocked in a short time, reducing the amount of air passing through and reducing the amount of heat exchange. The problem was that it decreased significantly in a short period of time.
そこで本発明は上記の問題を解消し、除霜周期を長くシ
、着霜時の暖房運転能力の向上を可能とする熱交換器を
提供するものである。Therefore, the present invention solves the above problems and provides a heat exchanger that can extend the defrosting cycle and improve heating operation performance during frosting.
問題点を解決するための手段
本発明の熱交換器は、内部を流体が流動する複数列の伝
熱管群と前記伝熱管群に挿入され、その間を空気が流動
するフィン群より構成され、前記伝熱管群の空気流入側
の列の段ピッチを、空気流出側の列の段ピッチより長く
したものである。Means for Solving the Problems The heat exchanger of the present invention comprises a plurality of rows of heat transfer tubes through which fluid flows and a fin group inserted into the heat transfer tubes through which air flows. The stage pitch of the row on the air inflow side of the heat exchanger tube group is made longer than the stage pitch of the row on the air outflow side.
作 用
上記構成において、空気流入側の列の各フィンに付着す
る単位時間当りの着霜量はフィン効率の低下により空気
流出側の列とほぼ同じしてすることができる。又、空気
流入側の列の通風路自体も広くなる。したがって、フィ
ン間で霜が付着していない空気通過面積を空気流入側か
ら流出側にわたってほぼ一様にすることが可能となり除
霜周期を長くしてその結果暖房運転時間を長くする。Operation In the above configuration, the amount of frost per unit time that adheres to each fin in the row on the air inflow side can be made almost the same as that on the row on the air outflow side due to the decrease in fin efficiency. Furthermore, the ventilation passage itself in the row on the air inflow side becomes wider. Therefore, it is possible to make the area through which frost does not adhere between the fins substantially uniform from the air inflow side to the air outflow side, thereby lengthening the defrosting cycle and, as a result, lengthening the heating operation time.
実施例
本発明の一実施例として２列の熱交換器を第１図および
第２図に示す。Embodiment As an embodiment of the present invention, a two-row heat exchanger is shown in FIGS. 1 and 2.
１１．１２は内部を流体が流動する伝熱管群であり、１
３は伝熱管群１１．１２に挿入されたフィン群である。11.12 is a group of heat transfer tubes in which fluid flows; 1
3 is a fin group inserted into the heat exchanger tube groups 11 and 12.
そしてその間を空気が矢印１４方向に流動する。空気流
入側すなわち１列目の伝熱管群１１の段ピッチＬ１１ば
、空気流出側すなわち２列目の伝熱管群１２の段ピッチ
Ｌ１２より長い。Air flows between them in the direction of arrow 14. The stage pitch L11 of the heat exchanger tube group 11 on the air inflow side, that is, the first row is longer than the stage pitch L12 of the heat exchanger tube group 12, on the air outflow side, that is, the second row.
次に本実施例の構成における作用を説明する。Next, the operation of the configuration of this embodiment will be explained.
１列目の伝熱管群１１の段ピッチＬ１１と２列目の伝熱
管群の段ピッチＬ１２の関係は”１１＝−Ｌ１２である
ので、フィン群１３のフィン効率は１列目の方が低い。Since the relationship between the step pitch L11 of the heat exchanger tube group 11 in the first row and the step pitch L12 of the heat exchanger tube group in the second row is "11=-L12," the fin efficiency of the fin group 13 is lower in the first row. .
又、Ｌｌ、＝−Ｌ１２であるので通風路自体も１列目の
方が広くなる。従って、１列目のフィン群１３と伝熱管
群１１に付着する単位時間当りの着霜量は２列目とほぼ
同じにすることができるので、フィン間で霜が付着して
いない空気通過面積を空気流入側から流出側にわたって
ほぼ一様にすることが可能となり除霜を少なくして暖房
時間を大幅に長くできた。Also, since Ll,=-L12, the ventilation passage itself is wider in the first row. Therefore, the amount of frost per unit time that adheres to the fin group 13 and heat exchanger tube group 11 in the first row can be made almost the same as that in the second row, so the air passage area between the fins without frost This makes it possible to make the air flow almost uniform from the air inflow side to the air outflow side, reducing defrosting and significantly extending heating time.
発明の効果
以上のように本発明の熱交換器は、内部を流体が流動す
る複数列の伝熱管群と、前記伝熱管群に挿入され、その
間を空気が流動するフィン群より構成され、前記伝熱管
群の空気流入側の列の段ピンチを、空気流出側の列の段
ピッチより長くしたものであるから、空気流入側の単位
時間当りの着霜量を流出側とほぼ同じにして空気通過面
積を空気流入側から流出側にわたって一様にすることが
できるためフィン間が霜層で閉塞するまでの暖房運転時
間を大幅に長くすることができる。Effects of the Invention As described above, the heat exchanger of the present invention includes a plurality of rows of heat exchanger tubes through which fluid flows, and a fin group inserted into the heat exchanger tubes through which air flows. Since the stage pinch in the row on the air inflow side of the heat exchanger tube group is made longer than the stage pitch in the row on the air outflow side, the amount of frost formed per unit time on the air inflow side is approximately the same as that on the outflow side. Since the passage area can be made uniform from the air inflow side to the air outflow side, the heating operation time until the space between the fins becomes clogged with a layer of frost can be significantly lengthened.
第１図は本発明の一実施例の熱交換器の断面図、第２図
は同熱交換器の斜視図、第３図は従来例の熱交換器の斜
視図である。
１１．１２・・・・・伝熱管群、１３・・−・フィン群
、Ｌ 、Ｌ ・・・段ピッチ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第３
図
ｆFIG. 1 is a sectional view of a heat exchanger according to an embodiment of the present invention, FIG. 2 is a perspective view of the same heat exchanger, and FIG. 3 is a perspective view of a conventional heat exchanger. 11.12... Heat exchanger tube group, 13... Fin group, L, L... Step pitch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure f
Claims (1)
管群に挿入され、その間を空気が流動するフィン群より
成り、前記伝熱管群の空気流入側の列の段ピッチを、空
気流出側の列の段ピッチより長くしたことを特徴とする
熱交換器。It consists of a plurality of rows of heat exchanger tubes through which fluid flows, and a fin group inserted into the heat exchanger tubes through which air flows, and the step pitch of the rows on the air inflow side of the heat exchanger tubes is determined by the air outflow. A heat exchanger characterized by being longer than the stage pitch of the side rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61145346A JPH0686995B2 (en) | 1986-06-20 | 1986-06-20 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61145346A JPH0686995B2 (en) | 1986-06-20 | 1986-06-20 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS633184A true JPS633184A (en) | 1988-01-08 |
| JPH0686995B2 JPH0686995B2 (en) | 1994-11-02 |
Family
ID=15383057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61145346A Expired - Fee Related JPH0686995B2 (en) | 1986-06-20 | 1986-06-20 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686995B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014137208A (en) * | 2013-01-18 | 2014-07-28 | Noritz Corp | Heat exchanger and water heater including the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52155456A (en) * | 1976-06-19 | 1977-12-23 | Mitsubishi Electric Corp | Cross fin type heat exchanger |
-
1986
- 1986-06-20 JP JP61145346A patent/JPH0686995B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52155456A (en) * | 1976-06-19 | 1977-12-23 | Mitsubishi Electric Corp | Cross fin type heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014137208A (en) * | 2013-01-18 | 2014-07-28 | Noritz Corp | Heat exchanger and water heater including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0686995B2 (en) | 1994-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |