JPH11270982A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH11270982A JPH11270982A JP10072168A JP7216898A JPH11270982A JP H11270982 A JPH11270982 A JP H11270982A JP 10072168 A JP10072168 A JP 10072168A JP 7216898 A JP7216898 A JP 7216898A JP H11270982 A JPH11270982 A JP H11270982A
- Authority
- JP
- Japan
- Prior art keywords
- fins
- heat exchanger
- heat transfer
- air
- rows
- 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
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Defrosting Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷蔵庫や冷凍庫等
に用いられるフィンチューブ型の熱交換器に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin tube type heat exchanger used for a refrigerator or a freezer.
【０００２】[0002]
【従来の技術】近年、冷蔵庫は大型化され庫内の温度を
冷却し維持するために、より大きな冷却能力が熱交換器
に要求されている。しかし、冷凍冷蔵庫のように空気を
氷点下の温度に冷却する場合、熱交換器には着霜現象が
生じ、その霜が風路を閉塞させ冷却能力を極端に低下さ
せる。そのために、着霜しても風路が確保でき長時間に
渡って冷却能力を維持できる熱交換器が求められてい
る。2. Description of the Related Art In recent years, refrigerators have been increased in size, and in order to cool and maintain the temperature in the refrigerator, a greater cooling capacity is required for the heat exchanger. However, when air is cooled to a temperature below the freezing point as in a refrigerator-freezer, a frosting phenomenon occurs in the heat exchanger, and the frost blocks the air passage and extremely reduces the cooling capacity. For this reason, there is a demand for a heat exchanger capable of securing an air passage even if frost is formed and maintaining a cooling capacity for a long time.
【０００３】以下図面を参照しながら特開昭５９−１０
４２８号公報に示される従来の熱交換器について説明を
行う。[0003] Referring to the accompanying drawings,
A conventional heat exchanger disclosed in Japanese Patent No. 428 will be described.
【０００４】図２は従来の熱交換器の斜視図、図３は側
面の要部断面図、図４は着霜時のＡ−Ａ断面図である。FIG. 2 is a perspective view of a conventional heat exchanger, FIG. 3 is a cross-sectional view of a main part of a side surface, and FIG. 4 is a cross-sectional view taken along line AA when frost is formed.
【０００５】図２、図３、図４において、１は熱交換
器、２は伝熱管、３はフィン、４は霜、５は空気の流れ
方向、６は冷媒である。熱交換器１は内部に冷媒６が流
動する碁盤目状に配列された複数列の伝熱管２と伝熱管
２に挿入され、その間を空気５が流動する複数枚の矩形
状フィン３とより構成され、フィン３はフィン３の前縁
が空気５の流れ方向に対し垂直に、且つ、列毎に分断さ
れて配設されている。In FIGS. 2, 3 and 4, 1 is a heat exchanger, 2 is a heat transfer tube, 3 is a fin, 4 is frost, 5 is a flow direction of air, and 6 is a refrigerant. The heat exchanger 1 is composed of a plurality of rows of heat transfer tubes 2 arranged in a grid pattern in which a coolant 6 flows, and a plurality of rectangular fins 3 inserted into the heat transfer tubes 2 and through which air 5 flows. The fins 3 are arranged such that the leading edge of the fins 3 is perpendicular to the flow direction of the air 5 and is divided for each row.
【０００６】以上のように構成された従来の熱交換器１
の動作について説明する。ファン（図示せず）の駆動に
より流入してきた空気５は、伝熱管２の内部を流動する
冷媒６と伝熱管２とフィン３を通じて熱交換が行われ
る。そして、冷媒６の蒸発温度が０℃以下になると、空
気５中の水蒸気が霜４として付着し霜層を形成する。そ
して、この霜４による通過風量の減少と断熱作用により
冷却能力が著しく減少していくために除霜が必要であ
る。そこで、フィン３を列毎に分断し列毎に最適なフィ
ンピッチを設定することで通過風量の減少を抑制し冷却
能力の減少を抑えていた。[0006] The conventional heat exchanger 1 configured as described above.
Will be described. The air 5 that has flowed in by the driving of the fan (not shown) exchanges heat through the refrigerant 6 flowing inside the heat transfer tube 2, the heat transfer tube 2, and the fins 3. When the evaporation temperature of the refrigerant 6 becomes 0 ° C. or lower, the water vapor in the air 5 adheres as frost 4 and forms a frost layer. Then, since the cooling capacity is remarkably reduced due to the reduction of the passing air volume and the heat insulation effect due to the frost 4, defrosting is necessary. Therefore, the fins 3 are divided for each row, and the optimal fin pitch is set for each row, thereby suppressing a decrease in the amount of passing air and a decrease in the cooling capacity.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、従来の
熱交換器１は上記のように構成されているので、霜４の
多くはフィン３の前縁部全体に着霜してしまい、フィン
ピッチの設定だけでは十分な通過風量の確保と冷却能力
の維持ができないという課題を有していた。However, since the conventional heat exchanger 1 is configured as described above, most of the frost 4 is frosted on the entire front edge of the fin 3 and the fin pitch is reduced. There was a problem that it was not possible to secure a sufficient amount of passing air and maintain the cooling capacity only by setting.
【０００８】本発明は上記課題に鑑み、着霜しても冷却
能力を維持できる熱交換器を提供するものである。The present invention has been made in view of the above problems, and provides a heat exchanger capable of maintaining a cooling capacity even when frost is formed.
【０００９】[0009]
【課題を解決するための手段】本発明の熱交換器は上記
課題を解決するために、碁盤目状に配設され内部を冷媒
が流動する複数列の伝熱管と、前記伝熱管に挿入されそ
の間を空気が流動する複数枚の矩形状フィンより成り、
前記フィンを前記伝熱管に対し段方向に偏位して配設す
ると共に、列毎あるいは複数列毎に前記フィンの偏位方
向が交互になるよう前記フィンを配設したものである。In order to solve the above problems, a heat exchanger according to the present invention is arranged in a grid pattern and has a plurality of rows of heat transfer tubes through which a refrigerant flows, and is inserted into the heat transfer tubes. It consists of a plurality of rectangular fins through which air flows,
The fins are displaced in the stepwise direction with respect to the heat transfer tubes, and the fins are arranged such that the fins are alternately displaced in every row or every plural rows.
【００１０】この発明によれば、着霜しても通過風量が
確保でき長時間に渡って冷却能力を維持することができ
る。According to the present invention, even when frost is formed, the amount of air passing therethrough can be secured, and the cooling capacity can be maintained for a long time.
【００１１】[0011]
【発明の実施の形態】本発明は、碁盤目状に配設され内
部を冷媒が流動する複数列の伝熱管と、前記伝熱管に挿
入されその間を空気が流動する複数枚の矩形状フィンよ
り成り、前記フィンを前記伝熱管に対し段方向に偏位し
て配設すると共に、列毎あるいは複数列毎に前記フィン
の偏位方向が交互になるよう前記フィンを配設したこと
を特徴とする熱交換器としたものであるので、空気流動
方向に平行で伝熱管との距離が長い方のフィン端部への
着霜低減と空気流動方向に平行で伝熱管との距離が短い
方のフィン端部での風路確保により、着霜時の風路確保
ができ通過風量の減少を抑えるという作用を有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention comprises a plurality of rows of heat transfer tubes arranged in a grid and through which a refrigerant flows, and a plurality of rectangular fins inserted into the heat transfer tubes and through which air flows. Wherein the fins are displaced in a stepwise direction with respect to the heat transfer tubes, and the fins are disposed such that the fins are alternately displaced in every row or every plural rows. It is a heat exchanger that is parallel to the air flow direction and reduces frost on the end of the fin, which is longer with the heat transfer tube and longer with the heat transfer tube. By securing the air path at the end of the fin, the air path at the time of frost formation can be secured and the effect of suppressing a decrease in the passing air volume can be obtained.
【００１２】[0012]
【実施例】図１は本発明の一実施例の熱交換器の要部側
面図である。FIG. 1 is a side view of a main part of a heat exchanger according to an embodiment of the present invention.
【００１３】図１において、２１は熱交換器、２２は伝
熱管、２３ａ，２３ｂはフィン、２４は空気の流れ方向
である。熱交換器２１は碁盤目状に配設され内部を冷媒
が流動する複数列の伝熱管２２と、伝熱管２２に挿入さ
れその間を空気２４が流動する複数枚の矩形状フィン２
３ａ，２３ｂより成り、フィン２３ａ，２３ｂを伝熱管
２２に対し段方向に偏位して配設すると共に、列毎に偏
位方向のことなるフィン２３ａと２３ｂを交互に配設し
てある。In FIG. 1, 21 is a heat exchanger, 22 is a heat transfer tube, 23a and 23b are fins, and 24 is the direction of air flow. The heat exchanger 21 is arranged in a grid pattern and has a plurality of rows of heat transfer tubes 22 through which a refrigerant flows, and a plurality of rectangular fins 2 inserted into the heat transfer tubes 22 and through which air 24 flows.
3a and 23b, the fins 23a and 23b are displaced in the stepwise direction with respect to the heat transfer tube 22, and the fins 23a and 23b having different deflection directions are alternately arranged for each row.
【００１４】以上のように構成された本実施例の熱交換
器２１の動作について説明する。ファン（図示せず）の
駆動により流入してきた空気２４は、伝熱管２２の内部
を流動する冷媒と伝熱管２２とフィン２３ａ，２３ｂを
通じて熱交換が行われる。そして、冷媒の蒸発温度が０
℃以下になると、空気２４中の水蒸気が霜として付着し
霜層を形成する。The operation of the heat exchanger 21 of the present embodiment configured as described above will be described. The air 24 that has flowed in by the driving of the fan (not shown) exchanges heat with the refrigerant flowing inside the heat transfer tube 22 through the heat transfer tube 22 and the fins 23a and 23b. And the evaporation temperature of the refrigerant is 0
When the temperature falls below ℃, the water vapor in the air 24 adheres as frost to form a frost layer.
【００１５】その際、伝熱管２２に対し段方向に偏位し
たフィン２３ａと２３ｂを列毎に交互に配置したことに
より、フィン２３ａ，２３ｂの両端部２５，２６を着霜
時のバイパス風路として確保することができるので、冷
却能力の急激な低下を防ぐことができる。At this time, the fins 23a and 23b deviated in the stepwise direction with respect to the heat transfer tube 22 are alternately arranged for each row, so that both ends 25 and 26 of the fins 23a and 23b are connected to the bypass air passage at the time of frost formation. As a result, it is possible to prevent a rapid decrease in cooling capacity.
【００１６】[0016]
【発明の効果】以上のように本発明の熱交換器は、碁盤
目状に配設され内部を冷媒が流動する複数列の伝熱管
と、前記伝熱管に挿入されその間を空気が流動する複数
枚の矩形状フィンより成り、前記フィンを前記伝熱管に
対し段方向に偏位して配設すると共に、列毎あるいは複
数列毎に前記フィンの偏位方向が交互になるよう前記フ
ィンを配設したことを特徴とする熱交換器としたもので
あるので、着霜時の風路を確保することができるので、
風量の確保ができ、冷却能力の急激な低下を防ぐことが
できるという効果が得られる。As described above, the heat exchanger of the present invention comprises a plurality of rows of heat transfer tubes arranged in a grid pattern and through which a refrigerant flows, and a plurality of heat transfer tubes inserted into the heat transfer tubes and through which air flows. A plurality of rectangular fins, wherein the fins are arranged so as to be deviated in a stepwise direction with respect to the heat transfer tubes, and the fins are arranged so that the fins are alternately arranged in a row or in a plurality of rows. Since it is a heat exchanger characterized by having been installed, it is possible to secure an air path at the time of frost formation,
The effect that the air volume can be secured and the cooling capacity can be prevented from sharply lowering can be obtained.
【図１】本発明の一実施例の熱交換器の要部側面図FIG. 1 is a side view of a main part of a heat exchanger according to an embodiment of the present invention.
【図２】従来の熱交換器の斜視図FIG. 2 is a perspective view of a conventional heat exchanger.
【図３】従来の熱交換器の側面の要部断面図FIG. 3 is a sectional view of a main part of a side surface of a conventional heat exchanger.
【図４】着霜時の図３のＡ−Ａ線断面図FIG. 4 is a cross-sectional view taken along line AA of FIG. 3 when frost is formed.
２１ 熱交換器 ２２ 伝熱管 ２３ａ，２３ｂ フィン ２４ 空気 21 heat exchanger 22 heat transfer tube 23a, 23b fin 24 air
Claims (1)
る複数列の伝熱管と、前記伝熱管に挿入されその間を空
気が流動する複数枚の矩形状フィンより成り、前記フィ
ンを前記伝熱管に対し段方向に偏位して配設すると共
に、列毎あるいは複数列毎に前記フィンの偏位方向が交
互になるよう前記フィンを配設したことを特徴とする熱
交換器。A plurality of rows of heat transfer tubes arranged in a grid and through which a refrigerant flows, and a plurality of rectangular fins inserted into the heat transfer tubes and flowing air therebetween. A heat exchanger, wherein the fins are arranged so as to be displaced in a stepwise direction with respect to the heat transfer tubes, and the fins are arranged so that the fins are alternated in the direction of deviation for each row or for a plurality of rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07216898A JP3886244B2 (en) | 1998-03-20 | 1998-03-20 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07216898A JP3886244B2 (en) | 1998-03-20 | 1998-03-20 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11270982A true JPH11270982A (en) | 1999-10-05 |
| JP3886244B2 JP3886244B2 (en) | 2007-02-28 |
Family
ID=13481450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07216898A Expired - Fee Related JP3886244B2 (en) | 1998-03-20 | 1998-03-20 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3886244B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009192148A (en) * | 2008-02-14 | 2009-08-27 | Sumitomo Light Metal Ind Ltd | Fin and tube type heat exchanger |
| JPWO2016189686A1 (en) * | 2015-05-27 | 2017-08-31 | 三菱電機株式会社 | Heat exchanger and refrigeration equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123774U (en) * | 1979-02-23 | 1980-09-02 | ||
| JPS5910428A (en) * | 1982-07-09 | 1984-01-19 | Hitachi Ltd | Manufacture of heat exchanger equipped with plate-shaped fin |
| JPS616541A (en) * | 1984-06-19 | 1986-01-13 | Matsushita Electric Ind Co Ltd | Heat collecting device utilizing solar heat |
| JPH05306852A (en) * | 1992-04-30 | 1993-11-19 | Matsushita Refrig Co Ltd | Heat exchanger and refrigerator using the same |
| JPH1019486A (en) * | 1996-07-04 | 1998-01-23 | Matsushita Refrig Co Ltd | Heat exchanger |
-
1998
- 1998-03-20 JP JP07216898A patent/JP3886244B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123774U (en) * | 1979-02-23 | 1980-09-02 | ||
| JPS5910428A (en) * | 1982-07-09 | 1984-01-19 | Hitachi Ltd | Manufacture of heat exchanger equipped with plate-shaped fin |
| JPS616541A (en) * | 1984-06-19 | 1986-01-13 | Matsushita Electric Ind Co Ltd | Heat collecting device utilizing solar heat |
| JPH05306852A (en) * | 1992-04-30 | 1993-11-19 | Matsushita Refrig Co Ltd | Heat exchanger and refrigerator using the same |
| JPH1019486A (en) * | 1996-07-04 | 1998-01-23 | Matsushita Refrig Co Ltd | Heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009192148A (en) * | 2008-02-14 | 2009-08-27 | Sumitomo Light Metal Ind Ltd | Fin and tube type heat exchanger |
| JPWO2016189686A1 (en) * | 2015-05-27 | 2017-08-31 | 三菱電機株式会社 | Heat exchanger and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3886244B2 (en) | 2007-02-28 |
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