JPH06137777A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH06137777A JPH06137777A JP30816692A JP30816692A JPH06137777A JP H06137777 A JPH06137777 A JP H06137777A JP 30816692 A JP30816692 A JP 30816692A JP 30816692 A JP30816692 A JP 30816692A JP H06137777 A JPH06137777 A JP H06137777A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- tube
- heat exchange
- air
- tubes
- 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.)
- Pending
Links
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、主に車両用空調装置
に用いられる熱交換器において、チューブ内に乱流促進
体を挿入して熱交換を高めるようにしたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger mainly used in an air conditioner for a vehicle, in which a turbulence promoting body is inserted in a tube to enhance heat exchange.
【0002】[0002]
【従来の技術】例えば暖房用の熱交換器として、実公昭
62─22786号公報に示されるように、熱交換器の
両側に配置されたタンクを結ぶチューブにインナーフィ
ンからなる乱流促進体を挿入し、この熱交換媒体の流れ
を乱流とし、熱交換媒体からチューブーに伝達される熱
の増大を図ったものは周知である。2. Description of the Related Art For example, as a heat exchanger for heating, as shown in Japanese Utility Model Publication No. 62-22786, a turbulent flow promoting member including inner fins is attached to a tube connecting tanks arranged on both sides of the heat exchanger. It is well known that the heat exchange medium is inserted and the flow of the heat exchange medium is made turbulent to increase the heat transferred from the heat exchange medium to the tube.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、この種
の熱交換器においては、熱交換が促進される反面、乱流
促進体によって流通抵抗が増加し、また乱流促進体自体
が微振動して騒音の原因となる不都合があった。However, in this type of heat exchanger, while heat exchange is promoted, the flow resistance increases due to the turbulent flow promoting body, and the turbulent flow promoting body itself vibrates slightly. There was an inconvenience that caused noise.
【0004】そこで、この発明においては、乱流促進体
がチューブに挿入された熱交換器において、熱交換媒体
の流通抵抗と、熱交換媒体の供給によって生じる騒音と
の低減を図る熱交換器を提供することを課題としてい
る。Therefore, in the present invention, in the heat exchanger in which the turbulence promoting body is inserted in the tube, a heat exchanger for reducing the flow resistance of the heat exchange medium and the noise generated by the supply of the heat exchange medium is provided. The challenge is to provide.
【0005】[0005]
【課題を解決するための手段】本発明者は、空調装置に
取りつけられた加熱用熱交換器の空気流の可視化実験を
行った結果、図4の実線で示されるように、風量の多い
偏った部分が形成されることからこの部分は、他の部分
に比べて、チューブ内の乱流促進体がなくても、充分な
熱交換量が確保される点に着目し、本発明を完成するに
至った。As a result of conducting a visualization experiment of an air flow of a heating heat exchanger attached to an air conditioner, the inventor of the present invention has shown that the air flow is uneven as shown by the solid line in FIG. The present invention completes the present invention by paying attention to the fact that a sufficient heat exchange amount is secured in this portion without the turbulent flow promoting body in the tube, as compared with the other portions, because the curved portion is formed. Came to.
【0006】即ち、この発明の要旨は、両端に配置され
たタンクを結ぶ多数のチューブに乱流促進体を挿入した
熱交換器において、通過する空気の流量が多い部分で
は、前記チューブ内の乱流促進体が取り除かれているこ
とにある。That is, the gist of the present invention is that in a heat exchanger in which a turbulent flow promoting body is inserted into a large number of tubes connecting tanks arranged at both ends, in a portion where a large amount of passing air flows, the turbulence in the tubes is increased. The flow enhancer has been removed.
【0007】[0007]
【作用】従って、タンクに流入された熱交換媒体は、乱
流促進体を取り除いたチューブが通路抵抗の小さい通路
となることから、この乱流促進体を取り除いたチューブ
に多く流れ、これらのチューブ周囲を通過する流量の多
い空気と熱交換する。つまり、熱交換器自体は、従来と
同様の熱交換量を確保した上で、チューブ内の乱流促進
体を減らすことができ、熱交換器全体としてみても、流
通抵抗が低減される他、乱流促進体が少なくなる分、乱
流促進体自体の微振動によって生じる騒音も減らすこと
ができる。Therefore, the heat exchange medium that has flowed into the tank largely flows into the tubes from which the turbulence promoter has been removed, because the tube from which the turbulence promoter has been removed serves as a passage with a small passage resistance. It exchanges heat with the high-flow air passing through it. In other words, the heat exchanger itself can reduce the turbulence promoting body in the tube after securing the same heat exchange amount as the conventional one, and the flow resistance is reduced as well as the heat exchanger as a whole. As the number of turbulence promoting bodies decreases, the noise generated by microvibration of the turbulence promoting body itself can be reduced.
【0008】[0008]
【実施例】以下、この考案の実施例を図面により説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.
【0009】図1乃至図3において、この発明に係る熱
交換器を加熱用熱交換器として用いた場合の実施例が示
され、この熱交換器を説明する前に、先ず、この熱交換
器を組み付けた自動車用空調装置の概略構成を説明す
る。1 to 3 show an embodiment in which the heat exchanger according to the present invention is used as a heat exchanger for heating. Before explaining this heat exchanger, first, this heat exchanger is described. A schematic configuration of an automobile air conditioner assembled with will be described.
【0010】図4において、自動車用空気調和装置1
は、空調ダクト2の最上流側にインテークドア切換装置
3が設けられ、このインテークドア切換装置3は内気入
口4と外気入口5とが分かれた部分にインテークドア6
が配置され、このインテークドア6をアクチュエータに
より操作して空調ダクト2内に導入する空気を内気と外
気とに選択できるようになっている。In FIG. 4, an air conditioner 1 for automobiles
Is provided with an intake door switching device 3 on the most upstream side of the air conditioning duct 2, and the intake door switching device 3 has an intake door 6 at a portion where an inside air inlet 4 and an outside air inlet 5 are separated.
The intake door 6 is operated by an actuator so that the air introduced into the air conditioning duct 2 can be selected from inside air and outside air.
【0011】送風機7は、空調ダクト2内に空気を吸い
込んで下流側に送風するもので、この送風機7の後方に
は冷却用の熱交換器8と加熱用の熱交換器9とが設けら
れている。The blower 7 sucks air into the air-conditioning duct 2 and blows it to the downstream side. A heat exchanger 8 for cooling and a heat exchanger 9 for heating are provided behind the blower 7. ing.
【0012】冷却用の熱交換器8は、コンプレッサ、コ
ンデンサ、リキッドタンク及びエクスパンションバルブ
と共に配管結合されて冷房サイクルを構成している。ま
た、加熱用の熱交換器9は、エンジンの冷却水が循環し
て空気を加熱するようになっており、冷却用の熱交換器
8の後方に位置する下方に窪んだ空調ダクトの傾斜面1
0に設置され、通風方向の後流側にかけて空調ダクト内
に突出するよう斜めに固定されている。この加熱用の熱
交換器9の上端にはその隅部に沿ってエアミックスドア
11が設けられており、このエアミックスドア11の開
度をアクチュエータで調節することで、加熱用の熱交換
器9を通過する空気と加熱用の熱交換器9をバイパスす
る空気との量が変えられ、その結果、吹出空気の温度が
制御されるようになっている。尚、12は、加熱用の熱
交換器9の後方で空気の流れを制御するミキシングドア
である。The heat exchanger 8 for cooling is connected with a compressor, a condenser, a liquid tank and an expansion valve by piping to form a cooling cycle. The heat exchanger 9 for heating is adapted to circulate the cooling water of the engine to heat the air. The inclined surface of the air-conditioning duct that is recessed below and located behind the heat exchanger 8 for cooling. 1
It is installed at 0 and is obliquely fixed so as to project into the air conditioning duct toward the downstream side of the ventilation direction. An air mix door 11 is provided along the corner of the upper end of the heat exchanger 9 for heating, and the heat exchanger for heating is adjusted by adjusting the opening of the air mix door 11 with an actuator. The amounts of the air passing through 9 and the air bypassing the heat exchanger 9 for heating are changed, so that the temperature of the blown air is controlled. Reference numeral 12 is a mixing door that controls the flow of air behind the heat exchanger 9 for heating.
【0013】そして、前記空調ダクト2の下流側は、デ
フロスト吹出口13、ベント吹出口14及びヒート吹出
口15に分かれて車室に開口し、その分かれた部分にモ
ードドア16a,16b,16cが設けられ、このモー
ドドア16a,16b,16cをアクチュエータで操作
することにより所望の吹出モードが得られるようになっ
ている。The downstream side of the air conditioning duct 2 is divided into a defrost outlet 13, a vent outlet 14 and a heat outlet 15 and opens into the vehicle compartment. A desired blowout mode is obtained by operating the mode doors 16a, 16b, 16c provided with an actuator.
【0014】上記空調装置1に用いられる加熱用の熱交
換器9は、図1乃至図3に示されるように、その両側に
タンク20,21が配置されていると共に、これらタン
ク20,21間が円筒形の多数本のチューブ22をもっ
て結ばれ、チューブ22には、多数のプレートフィン2
3が固定されている。As shown in FIGS. 1 to 3, the heat exchanger 9 for heating used in the air conditioner 1 has tanks 20 and 21 arranged on both sides thereof and a space between the tanks 20 and 21. Are connected by a large number of cylindrical tubes 22, and a large number of plate fins 2 are attached to the tubes 22.
3 is fixed.
【0015】この熱交換器9は、両側のタンク20,2
1を空調ダクト2の側面に沿わせて、チューブ22が通
風方向に対して直角に、且つ、水平になるように取り付
けられており、上流から送られてくる空気は、チューブ
とチューブとの間を通り抜ける際に主としてプレートフ
ィン23と熱交換して後方へ送られる。This heat exchanger 9 includes tanks 20 and 2 on both sides.
1 is installed along the side surface of the air conditioning duct 2 so that the tube 22 is horizontal and at right angles to the ventilation direction, and the air sent from the upstream side is between the tubes. When passing through, the heat is mainly exchanged with the plate fin 23 and sent to the rear.
【0016】一方のタンク20は、その内部で長手方向
に延びる隔壁24をもって流入室25と流出室26とに
画成されていると共に、流入室25には流入口27が、
流出室26には流出口28がそれぞれチューブ22の軸
方向と同方向に形成され、これら流入口27と流出口2
8は、タンク20の上側、即ちエアミックスドア11の
回転軸に近い側において流入室25と流出室26とにそ
れぞれ開口されている。One of the tanks 20 is divided into an inflow chamber 25 and an outflow chamber 26 with a partition wall 24 extending in the longitudinal direction inside thereof, and an inflow port 27 is formed in the inflow chamber 25.
Outflow ports 28 are formed in the outflow chamber 26 in the same direction as the axial direction of the tube 22, respectively.
8 is open to the inflow chamber 25 and the outflow chamber 26 on the upper side of the tank 20, that is, on the side close to the rotation axis of the air mix door 11.
【0017】乱流促進体30は、多数本のチューブ22
(B部)に挿入されるもので、長手方向に連続して波形
に曲げられ、両側面がチューブ22の内面に当接するよ
う挿入されている。この乱流促進体30は、図3に示さ
れるように、複数本を一組とし、チューブ22の間隔に
合わせて平行になるようそれぞれの一端を連結具31に
固定するようにしてもよく、全く連結せずに別々として
チューブ22に挿入するものであってもよい。そして、
この実施例においては、熱交換器9の流入口27及び流
出口28が臨む側、即ち、エアミックスドア11の回転
軸に近い側のチューブ(A部)に挿入されるべき乱流促
進体30が取り除かれている。The turbulence promoting body 30 includes a large number of tubes 22.
It is inserted in (B section), is bent in a wave shape continuously in the longitudinal direction, and is inserted so that both side surfaces contact the inner surface of the tube 22. As shown in FIG. 3, the turbulent flow promoting body 30 may be a set of a plurality of sets, and one end of each may be fixed to the connecting tool 31 so as to be parallel in accordance with the interval of the tubes 22, They may be inserted into the tube 22 separately without being connected at all. And
In this embodiment, the turbulence promoting body 30 to be inserted into the tube (A portion) on the side facing the inflow port 27 and the outflow port 28 of the heat exchanger 9, that is, on the side close to the rotation axis of the air mix door 11. Have been removed.
【0018】上記構成において、冷却用の熱交換器8を
通過した空気は、エアミックスドア11の開度に応じて
加熱用の熱交換器9へ送られるが、加熱用の熱交換器9
は、空調ダクト2の窪みの傾斜面10に斜めに設置され
ているので、通過しようとする空気はエアミックスドア
11に案内されて熱交換器9の上部側(A部)のチュー
ブ間を多く通過し、ここで熱交換器9のプレートフィン
23に伝達される熱交換媒体の熱と熱交換されて加熱さ
れ、熱交換器後方のエアミックス室17でバイパスした
空気と混合されて、所望の吹出し口より吹き出される。In the above structure, the air that has passed through the cooling heat exchanger 8 is sent to the heating heat exchanger 9 in accordance with the opening degree of the air mix door 11, but the heating heat exchanger 9 is used.
Is obliquely installed on the sloping surface 10 of the depression of the air conditioning duct 2, so that the air passing therethrough is guided by the air mix door 11 and flows between the tubes on the upper side (A section) of the heat exchanger 9 to a large extent. The heat of the heat exchange medium that passes through and is transferred to the plate fins 23 of the heat exchanger 9 is heat-exchanged with the heat, and is mixed with the bypassed air in the air mix chamber 17 at the rear of the heat exchanger to obtain the desired heat. It is blown out from the outlet.
【0019】ところで、流入口27から流入室25に流
入された熱交換媒体は、流入室25に接続されているチ
ューブ22を通って反対側のタンク21に至り、ここで
Uターンして残りのチューブ22を通って流出室26に
入り、流出口28から流出される。この際、熱交換媒体
は、通路抵抗の小さい部分、即ち交換器上部側(A部)
の乱流促進体30が存在しないチューブ22を多く通
る。しかも、B部のチューブ内の流速に対してA部の流
速は早くなるので、A部の流れは層流域ではあるが擾乱
が増大し、その擾乱が流出口28近くまで及ぶ。このた
め、空気流量が多いA部での熱交換量は、乱流促進体3
0が存在しなくても従来と同程度のものとなり、熱交換
器9の流通抵抗を減らしつつも、必要とする熱交換量を
確保することができる。また、A部のチューブにおい
て、乱流促進体30が存在しない分、乱流促進体30の
微振動による騒音も減らすことができるものである。By the way, the heat exchange medium that has flowed into the inflow chamber 25 from the inflow port 27 reaches the tank 21 on the opposite side through the tube 22 connected to the inflow chamber 25, where it makes a U-turn and remains. It flows into the outflow chamber 26 through the tube 22 and flows out from the outflow port 28. At this time, the heat exchange medium is a portion having a small passage resistance, that is, the upper side of the exchanger (A portion).
The turbulent flow promoting body 30 of FIG. Moreover, since the flow velocity in the A portion becomes faster than the flow velocity in the tube in the B portion, the flow in the A portion is in the laminar flow region but the disturbance increases, and the disturbance extends to the vicinity of the outlet 28. Therefore, the heat exchange amount in the portion A where the air flow rate is large is
Even if 0 does not exist, it becomes almost the same as the conventional one, and the required heat exchange amount can be secured while reducing the flow resistance of the heat exchanger 9. Further, since the turbulent flow promoting body 30 does not exist in the tube of the section A, noise due to slight vibration of the turbulent flow promoting body 30 can be reduced.
【0020】尚、この実施例においては、乱流促進体3
0が挿入されていないA部のチューブは挿入されている
B部のチューブと同じ径にしてあるが、A部のチューブ
径をB部のチューブ径より大きくし、流路抵抗の低減を
更に図るようにしてもよい。また、乱流促進体が欠かれ
たチューブは、流入口及び流出口が臨む側にあることが
条件ではなく、例えば、流入口や流出口がタンク中央に
あっても、下寄りにあっても、エアミックスドアに案内
された空気が多く通る部分にあればよい。例えば、空調
ダクト2の形状が異なり、または熱交換器9の取付け位
置が異なって、空気流量が熱交換器9の中央部分に集中
する場合には、乱流促進体30を取り除くチューブは、
熱交換器9の中央部分となる。In this embodiment, the turbulent flow promoting body 3
The tube of the A section where 0 is not inserted has the same diameter as the tube of the B section which is inserted, but the tube diameter of the A section is made larger than the tube diameter of the B section to further reduce the flow path resistance. You may do it. Further, the tube lacking the turbulence promoting body does not have to be on the side where the inlet and the outlet face, and for example, whether the inlet or the outlet is in the center of the tank or at the bottom. , It suffices if there is a large amount of air guided to the air mix door. For example, when the shape of the air conditioning duct 2 is different or the mounting position of the heat exchanger 9 is different and the air flow rate is concentrated in the central portion of the heat exchanger 9, the tube for removing the turbulence promoting body 30 is
It becomes the central portion of the heat exchanger 9.
【0021】[0021]
【発明の効果】以上述べたように、この発明によれば、
熱交換器の空気流量の多い部分において、チューブに挿
入される乱流促進体を取り除いたので、従来と同様の熱
交換量を確保した上で、熱交換器は全体として流通抵抗
が小さくなり、乱流促進体自体の微振動によって生じる
騒音も減らすことができるものである。As described above, according to the present invention,
In the part where the air flow rate of the heat exchanger is high, the turbulence promoting body inserted into the tube was removed, so after securing the same heat exchange amount as the conventional one, the heat exchanger as a whole has a smaller flow resistance, It is also possible to reduce the noise generated by the slight vibration of the turbulence promoting body itself.
【図1】この発明に係る熱交換器の正面図である。FIG. 1 is a front view of a heat exchanger according to the present invention.
【図2】図1に示す熱交換器のA−A線断面図である。FIG. 2 is a cross-sectional view taken along the line AA of the heat exchanger shown in FIG.
【図3】この発明に係る熱交換器に用いられる乱流促進
体を示す図である。FIG. 3 is a view showing a turbulent flow promoting body used in the heat exchanger according to the present invention.
【図4】この発明に係る熱交換器を自動車用空調装置の
加熱用熱交換器として用いた場合を示す該自動車用空調
装置の概略構成図である。FIG. 4 is a schematic configuration diagram of an automobile air conditioner showing a case where the heat exchanger according to the present invention is used as a heating heat exchanger for an automobile air conditioner.
20,21 タンク 22 チューブ 30 乱流促進体 20, 21 Tank 22 Tube 30 Turbulence promoter
Claims (1)
ューブに乱流促進体を挿入した熱交換器において、通過
する空気の流量が多い部分では、前記チューブ内の乱流
促進体が取り除かれていることを特徴とする熱交換器。1. In a heat exchanger in which a turbulence promoting body is inserted in a large number of tubes connecting tanks arranged at both ends, the turbulence promoting body in the tube is removed at a portion where a large amount of air flows. A heat exchanger characterized in that
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30816692A JPH06137777A (en) | 1992-10-22 | 1992-10-22 | Heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30816692A JPH06137777A (en) | 1992-10-22 | 1992-10-22 | Heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06137777A true JPH06137777A (en) | 1994-05-20 |
Family
ID=17977697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30816692A Pending JPH06137777A (en) | 1992-10-22 | 1992-10-22 | Heat exchanger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06137777A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010112718A (en) * | 2008-11-04 | 2010-05-20 | Takasago Thermal Eng Co Ltd | Method for measuring temperature distribution in air path |
-
1992
- 1992-10-22 JP JP30816692A patent/JPH06137777A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010112718A (en) * | 2008-11-04 | 2010-05-20 | Takasago Thermal Eng Co Ltd | Method for measuring temperature distribution in air path |
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