JP5622411B2 - Capacitor - Google Patents

Capacitor Download PDF

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Publication number
JP5622411B2
JP5622411B2 JP2010064638A JP2010064638A JP5622411B2 JP 5622411 B2 JP5622411 B2 JP 5622411B2 JP 2010064638 A JP2010064638 A JP 2010064638A JP 2010064638 A JP2010064638 A JP 2010064638A JP 5622411 B2 JP5622411 B2 JP 5622411B2
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heat exchange
header tank
refrigerant
path
exchange pipe
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JP2011196625A (en
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和美 鴇崎
和美 鴇崎
藤井　隆行
隆行 藤井
瀬野　善彦
善彦 瀬野
新吾 鈴木
新吾 鈴木
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Mahle Behr Thermal Systems Japan Ltd
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Keihin Thermal Technology Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates

Description

この発明は、たとえば自動車に搭載される冷凍サイクルであるカーエアコンに好適に用いられるコンデンサに関する。   The present invention relates to a capacitor suitably used for, for example, a car air conditioner that is a refrigeration cycle mounted on an automobile.

この明細書および特許請求の範囲において、上下、左右は図１の上下、左右をいうものとする。   In this specification and claims, the top, bottom, left, and right refer to the top, bottom, left, and right in FIG.

たとえばカーエアコンのコンデンサとして、上下方向に間隔をおいて並列状に配置された複数の熱交換管と、熱交換管の左右両端部が接続された上下方向にのびるヘッダタンクとを備え、上下に連続して並んだ複数の熱交換管からなる熱交換パスが上下に並んで３つ設けられ、各熱交換パスを構成する全ての熱交換管の冷媒流れ方向が同一となっているとともに、隣り合う２つの熱交換パスの熱交換管の冷媒流れ方向が異なっているコンデンサであって、左右いずれか一端部側に、下端の熱交換パスを構成する熱交換管が接続される第１ヘッダタンクと、下端の熱交換パスを除いた熱交換パスを構成する熱交換管が接続される第２ヘッダタンクとが別個に設けられ、第２ヘッダタンクが第１ヘッダタンク上に配置され、第１ヘッダタンクの太さが第２ヘッダタンクの太さよりも極めて大きくなっていつとともに、第１ヘッダタンク内に乾燥剤が配置され、これにより第１ヘッダタンクが重力を利用して気液を分離しかつ液を溜める受液器としての機能を有し、第１ヘッダタンクに接続された第１の熱交換管および第２ヘッダタンクに接続された第２の熱交換管の長さが等しくなっているとともに、第１熱交換管の第１ヘッダタンク側の端部および第２熱交換管の第２ヘッダタンク側の端部が同一垂直線上に位置し、すべての熱交換パスが、冷媒を凝縮させる冷媒凝縮パスとなっているコンデンサが知られている（特許文献１参照）。   For example, as a condenser of a car air conditioner, it is provided with a plurality of heat exchange tubes arranged in parallel at intervals in the vertical direction, and a header tank extending in the vertical direction to which both left and right ends of the heat exchange tubes are connected. Three heat exchange paths composed of a plurality of heat exchange pipes arranged in series are provided in the vertical direction, and the refrigerant flow directions of all the heat exchange pipes constituting each heat exchange path are the same and adjacent to each other. The first header tank is a condenser in which the refrigerant flow directions of the heat exchange pipes of the two matched heat exchange paths are different, and the heat exchange pipe constituting the heat exchange path at the lower end is connected to either one of the left and right ends. And a second header tank to which a heat exchange pipe constituting the heat exchange path excluding the heat exchange path at the lower end is connected separately, the second header tank is disposed on the first header tank, Header tank thickness When the thickness of the second header tank becomes much larger than the thickness of the second header tank, a desiccant is disposed in the first header tank, so that the first header tank uses gravity to separate the gas and liquid and store the liquid. The first heat exchange pipe connected to the first header tank and the second heat exchange pipe connected to the second header tank have the same function as the liquid tank, and the lengths of the first heat exchange pipe and the second header tank are equal to each other. The first header tank side end of the heat exchange pipe and the second header tank side end of the second heat exchange pipe are located on the same vertical line, and all the heat exchange paths are a refrigerant condensation path for condensing refrigerant. A capacitor is known (see Patent Document 1).

特許文献１記載のコンデンサにおいて、第１ヘッダタンク内での気液分離を効果的に行うには、第１ヘッダタンクの内容積を第２ヘッダタンクに比べてかなり大きくする必要があるので、第１ヘッダタンクの太さが第２ヘッダタンクの太さに比較してかなり大きくなっており、コンデンサを配置するために大きなスペースが必要になるという問題がある。   In the capacitor described in Patent Document 1, in order to effectively perform gas-liquid separation in the first header tank, the inner volume of the first header tank needs to be considerably larger than that of the second header tank. The thickness of one header tank is considerably larger than the thickness of the second header tank, and there is a problem that a large space is required to arrange the capacitor.

また、通常、コンデンサの近傍には、他の機器が配置されるが、特許文献１記載のコンデンサによれば、第１ヘッダタンクが他の機器の邪魔になる。たとえば、カーエアコン用のコンデンサの通風方向下流側にはラジエータが配置されることが一般的であるが、特許文献１記載のコンデンサによれば、第１ヘッダタンクがラジエータ設置の邪魔になり、エンジンルーム内で無駄なスペースが生じ、省スペース化を図ることができない。しかも、第１ヘッダタンクのほぼ全長にわたって熱交換管が接続されているので、気液分離性能が十分ではないという問題がある。   Usually, other devices are arranged near the capacitor. However, according to the capacitor described in Patent Document 1, the first header tank interferes with other devices. For example, a radiator is generally disposed on the downstream side in the ventilation direction of a condenser for a car air conditioner. However, according to the condenser described in Patent Document 1, the first header tank interferes with the installation of the radiator, and the engine Unnecessary space is generated in the room, and space cannot be saved. Moreover, since the heat exchange pipe is connected over almost the entire length of the first header tank, there is a problem that the gas-liquid separation performance is not sufficient.

実開平３−３１２６６号公報Japanese Utility Model Publication 3-31266

この発明の目的は、上記問題を解決し、他の機器を近傍に配置した場合にも、特許文献１記載のコンデンサに比較して他の機器の邪魔になりにくいコンデンサを提供することにある。   An object of the present invention is to provide a capacitor that solves the above-described problems and is less likely to interfere with other devices as compared with the capacitor described in Patent Document 1 even when other devices are arranged in the vicinity.

本発明は、上記目的を達成するために以下の態様からなる。   In order to achieve the above object, the present invention comprises the following aspects.

1)上下方向に間隔をおいて並列状に配置された左右方向にのびる複数の熱交換管と、熱交換管の左右両端部が接続された上下方向にのびるヘッダタンクとを備え、上下に連続して並んだ複数の熱交換管からなる熱交換パスが上下に並んで３以上設けられ、各熱交換パスを構成する全ての熱交換管の冷媒流れ方向が同一となっているとともに、隣り合う２つの熱交換パスの熱交換管の冷媒流れ方向が異なっているコンデンサであって、
左右いずれか一端部側に、下端の熱交換パスを含みかつ連続して並んだ少なくとも２つの熱交換パスを構成する第１の熱交換管が接続される第１ヘッダタンクと、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスよりも上方に設けられた熱交換パスを構成する第２の熱交換管が接続される第２ヘッダタンクとが設けられ、第１ヘッダタンクの全体が、第２ヘッダタンクよりも左右方向外側に配置されるとともに、第１ヘッダタンクに接続された第１熱交換管の第１ヘッダタンク側端部が、第２ヘッダタンクに接続された第２熱交換管の第２ヘッダタンク側端部よりも左右方向外方にのびており、第１ヘッダタンクの上端が第２ヘッダタンクの下端よりも上方に位置するとともに、第１ヘッダタンクの下端が第２ヘッダタンクの下端よりも下方に位置しており、第１ヘッダタンクにおける第２ヘッダタンクの下端よりも下方に突出した部分に第１熱交換管が接続され、第１ヘッダタンクが重力を利用して気液を分離しかつ液を溜める機能を有し、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスのうちの上端の熱交換パスと、第２ヘッダタンクに接続された第２熱交換管からなる熱交換パスとが、冷媒を凝縮させる冷媒凝縮パスであり、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスのうち上端の熱交換パスを除いた熱交換パスが、冷媒を過冷却する冷媒過冷却パスであり、第１ヘッダタンク内に、冷媒凝縮パスを構成する第１熱交換管から第１ヘッダタンク内への液相冷媒の流れを促進する分流制御手段が設けられており、分流制御手段が、第１ヘッダタンク内を、第１熱交換管からなる上端の熱交換パスである冷媒凝縮パスの第１熱交換管が通じる密閉状の冷媒流入空間と、残りの気液分離空間とに区画する仕切部を備えており、仕切部における冷媒流入空間に通じる第１熱交換管が配置されている上下方向の範囲の上下方向中央部よりも下方の部分に、絞り機能を有しかつ冷媒流入空間と気液分離空間とを通じさせる開口が形成されているコンデンサ。 1) It is equipped with a plurality of heat exchange pipes extending in the left-right direction and arranged in parallel at intervals in the vertical direction, and a header tank extending in the vertical direction to which both left and right ends of the heat exchange pipe are connected. The heat exchange paths composed of a plurality of heat exchange pipes arranged side by side are provided three or more in the vertical direction, and all the heat exchange pipes constituting each heat exchange path have the same refrigerant flow direction and are adjacent to each other. A condenser in which the refrigerant flow directions of the heat exchange pipes of the two heat exchange paths are different,
A first header tank to which a first heat exchange pipe constituting at least two heat exchange paths including a heat exchange path at the lower end and continuously arranged is connected to either one of the left and right ends; and a first header tank And a second header tank to which a second heat exchange pipe constituting a heat exchange path provided above the heat exchange path formed by the first heat exchange pipe connected to the first heat exchange pipe is connected. whole, along with being located in the left-right direction outer side of the second header tank, the first header tank side end portion of the first heat exchange tubes connected to the first header tank, which is connected to the second header tank The second heat exchange pipe extends outward in the left-right direction from the second header tank side end, the upper end of the first header tank is located above the lower end of the second header tank, and the lower end of the first header tank Of the second header tank Is located below the end, the first heat exchange tubes are connected to a portion projecting downward from the lower end of the second header tank of the first header tank, the gas-liquid is first header tank using gravity The heat exchange path at the upper end of the heat exchange path composed of the first heat exchange pipe connected to the first header tank and the second header tank connected to the second header tank The heat exchange path made of the heat exchange pipe is a refrigerant condensation path for condensing the refrigerant, and heat excluding the heat exchange path at the upper end of the heat exchange path made of the first heat exchange pipe connected to the first header tank. The exchange path is a refrigerant supercooling path for supercooling the refrigerant, and promotes the flow of the liquid-phase refrigerant from the first heat exchange pipe constituting the refrigerant condensation path into the first header tank in the first header tank. diversion control means is provided, diversion control Stage, the first header tank, and a closed state refrigerant inflow space first heat exchange tubes of refrigerant condensing path leading a heat exchange path at the upper end comprising a first heat exchange tubes, and the rest of the separation zone And has a throttling function in a portion below the vertical central portion of the vertical range in which the first heat exchange pipe leading to the refrigerant inflow space in the partition is disposed , and capacitors for opening establishing communication between the refrigerant inflow space and the gas-liquid separation space is formed.

2)冷媒流入空間に、冷媒凝縮パスのすべての第１熱交換管が通じている上記1)記載のコンデンサ。 2) The capacitor according to 1) above, wherein all the first heat exchange pipes of the refrigerant condensing path communicate with the refrigerant inflow space.

3)絞り機能を有する開口の流路断面積が、冷媒流入空間に通じる全第１熱交換管の総流路断面積の７０％以下である上記1)または2)記載のコンデンサ。 3) The capacitor according to 1) or 2) above, wherein the flow passage cross-sectional area of the opening having a throttle function is 70% or less of the total flow passage cross-sectional area of all the first heat exchange pipes leading to the refrigerant inflow space.

4)仕切部が、長さ方向を上下方向に向けるとともに通風方向の両側縁が第１ヘッダタンクの周壁内周面における管挿通穴よりも通風方向外側部分に接触し、かつ第１ヘッダタンクの周壁とともに冷媒流入空間の周囲を囲む囲繞壁と、囲繞壁の上下両端に設けられ、かつ冷媒流入空間の上下両端を閉鎖する頂壁および底壁とよりなり、囲繞壁に開口が形成されている上記1)〜3)のうちのいずれかに記載のコンデンサ。 4) The partitioning portion has the length direction directed in the vertical direction, and both side edges in the ventilation direction are in contact with the outer portion in the ventilation direction than the pipe insertion hole in the inner peripheral surface of the first header tank, and the first header tank An enclosure wall that surrounds the periphery of the refrigerant inflow space together with the peripheral wall, and a top wall and a bottom wall that are provided at both upper and lower ends of the enclosure wall and close both upper and lower ends of the refrigerant inflow space, and an opening is formed in the enclosure wall. The capacitor according to any one of 1) to 3) above.

5)仕切部の囲繞壁の両側縁部どうしが連結部により連結されるとともに、囲繞壁と連結部とにより冷媒通過用筒状体が形成され、当該冷媒通過用筒状体に、冷媒流入空間の底壁よりも下方にのび、かつ第１ヘッダタンク内における冷媒凝縮パスの下方に隣接する冷媒過冷却パスの第１熱交換管が通じている部分に位置した延長部が設けられ、第１ヘッダタンクの周壁と冷媒通過用筒状体の間に、第１ヘッダタンク内を、冷媒凝縮パスの下方に隣接する冷媒過冷却パスの第１熱交換管が通じている第１部分と、第１部分よりも上方の第２部分とに仕切る区画部が設けられ、冷媒通過用筒状体の延長部に第１ヘッダタンク内の第１部分に開口した第１連通口が形成されるとともに、冷媒通過用筒状体における冷媒流入空間の底壁よりも上方の部分に第１ヘッダタンク内の第２部分に開口した第２連通口が形成され、第１および第２連通口のうち少なくともいずれか一方の連通口がフィルタにより塞がれている上記4)記載のコンデンサ。 5) Both side edge portions of the surrounding wall of the partition portion are connected by the connecting portion, and a refrigerant passing cylindrical body is formed by the surrounding wall and the connecting portion, and a refrigerant inflow space is formed in the refrigerant passing cylindrical body. An extension portion is provided which extends below the bottom wall of the first header tank and is located in a portion where the first heat exchange pipe of the refrigerant subcooling path adjacent to the refrigerant condensation path in the first header tank communicates with the first header tank. A first portion in which the first heat exchange pipe of the refrigerant subcooling path adjacent to the lower side of the refrigerant condensing path passes through the first header tank between the peripheral wall of the header tank and the refrigerant passing tubular body; A partition portion that is partitioned into a second portion above the first portion is provided, and a first communication port that is open to the first portion in the first header tank is formed in the extended portion of the refrigerant passing tubular body. A portion above the bottom wall of the refrigerant inflow space in the refrigerant passage cylindrical body The second communication port opened in the second part of the first header tank is formed, the at least one of the communication ports of the first and second communication port is blocked by the filter 4) capacitor according .

6)仕切部における冷媒流入空間の下端を閉鎖する底壁、および第１ヘッダタンクの周壁と冷媒通過用筒状体の間に設けられた区画部が、第１ヘッダタンクの周壁に接合された１つの板状体からなり、冷媒通過用筒状体の延長部が板状体に形成された貫通穴に通されるとともに、冷媒通過用筒状体の囲繞壁および連結部の下端が板状体の上面に接触させられ、板状体における冷媒通過用筒状体の囲繞壁よりも第１熱交換管側の部分が、仕切部の冷媒流入空間の下端を閉鎖する底壁となっている上記5)記載のコンデンサ。 6) The bottom wall that closes the lower end of the refrigerant inflow space in the partition part, and the partition part provided between the peripheral wall of the first header tank and the refrigerant passage cylindrical body are joined to the peripheral wall of the first header tank. It consists of one plate-like body, and the extension part of the refrigerant passage cylindrical body is passed through a through hole formed in the plate-like body, and the lower wall of the refrigerant passage cylindrical body and the lower end of the connecting portion are plate-like. A portion of the plate-like body that is closer to the first heat exchange tube than the surrounding wall of the refrigerant passage tubular body is a bottom wall that closes the lower end of the refrigerant inflow space of the partition portion. Capacitor as described in 5) above.

7)第１ヘッダタンクが、上端および下端のうち少なくともいずれか一端が開口した筒状本体と、当該筒状本体の開口端部に着脱自在に取り付けられた閉鎖部材とよりなる上記1)〜6)のうちのいずれかに記載のコンデンサ。 7) The above 1) to 6 ), wherein the first header tank is composed of a cylindrical main body having at least one of an upper end and a lower end opened, and a closing member detachably attached to the opening end of the cylindrical main body. ) .

8)第１ヘッダタンクに少なくとも２つの熱交換パスを構成する第１熱交換管が接続され、第２ヘッダタンクに少なくとも１つの熱交換パスを構成する第２熱交換管が接続されている上記1)〜7)のうちのいずれかに記載のコンデンサ。 8) The first header exchange tank constituting at least two heat exchange paths is connected to the first header tank, and the second header exchange pipe constituting at least one heat exchange path is connected to the second header tank. The capacitor according to any one of 1) to 7) .

上記1)〜8)のコンデンサによれば、左右いずれか一端部側に、下端の熱交換パスを含みかつ連続して並んだ少なくとも２つの熱交換パスを構成する第１の熱交換管が接続される第１ヘッダタンクと、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスよりも上方に設けられた熱交換パスを構成する第２の熱交換管が接続される第２ヘッダタンクとが設けられ、第１ヘッダタンクの全体が、第２ヘッダタンクよりも左右方向外側に配置されるとともに、第１ヘッダタンクに接続された第１熱交換管の第１ヘッダタンク側端部が、第２ヘッダタンクに接続された第２熱交換管の第２ヘッダタンク側端部よりも左右方向外方にのびており、第１ヘッダタンクの上端が第２ヘッダタンクの下端よりも上方に位置するとともに、第１ヘッダタンクの下端が第２ヘッダタンクの下端よりも下方に位置しており、第１ヘッダタンクにおける第２ヘッダタンクの下端よりも下方に突出した部分に第１熱交換管が接続され、第１ヘッダタンクが重力を利用して気液を分離しかつ液を溜める機能を有しているので、第１ヘッダタンクの上端を、たとえば第２ヘッダタンクの上端近傍まで上方に延ばすことによって、特許文献１記載のコンデンサに比べて、第１ヘッダタンクの太さを第２ヘッダタンクの太さよりも大きくすることなく、第１ヘッダタンクの内容積を、気液分離を効果的に行いうる大きさにすることができる。したがって、コンデンサを配置するためのスペースを、特許文献１記載のコンデンサに比べて小さくすることができる。特に、カーエアコン用のコンデンサの通風方向下流側にラジエータが配置される場合であっても、第１ヘッダタンクが第２ヘッダタンクの左右方向外側に配置されているので、第１ヘッダタンクがラジエータ設置の邪魔になることはなく、エンジンルーム内での無駄なスペースが生じることはない。その結果、省スペース化を図ることが可能になる。また、第１ヘッダタンクにおける熱交換管が接続された部分よりも上方に空間が存在するので、重力による気液分離効果が優れたものになる。 According to the capacitors 1) to 8) , the first heat exchange pipe constituting at least two heat exchange paths including the heat exchange path at the lower end and continuously arranged is connected to either one of the left and right ends. A first header tank that is connected to a second heat exchange pipe that constitutes a heat exchange path provided above a heat exchange path that is composed of a first heat exchange pipe connected to the first header tank. 2 header tank and is provided, the entire first header tank, while being arranged in the lateral direction outer side of the second header tank, the first header tank of the first heat exchange tubes connected to the first header tank The end portion extends outward in the left-right direction from the second header tank side end portion of the second heat exchange pipe connected to the second header tank, and the upper end of the first header tank is longer than the lower end of the second header tank. with located above, the first header The lower end of the tank is positioned lower than the lower end of the second header tank, the first heat exchange tubes are connected to a portion projecting downward from the lower end of the second header tank of the first header tank, the first header Since the tank has a function of separating gas and liquid using gravity and storing the liquid, the upper end of the first header tank is extended upward, for example, to the vicinity of the upper end of the second header tank. Compared to the capacitor described, the inner volume of the first header tank is made large enough to effectively perform gas-liquid separation without making the thickness of the first header tank larger than the thickness of the second header tank. be able to. Therefore, the space for disposing the capacitor can be reduced as compared with the capacitor described in Patent Document 1. In particular, even when the radiator is disposed downstream of the air-conditioner condenser in the direction of ventilation, the first header tank is disposed on the outer side in the left-right direction of the second header tank. There is no hindrance to installation, and there is no wasted space in the engine room. As a result, it is possible to save space. In addition, since the space exists above the portion of the first header tank to which the heat exchange pipe is connected, the gas-liquid separation effect by gravity is excellent.

また、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスのうちの上端の熱交換パスと、第２ヘッダタンクに接続された第２熱交換管からなる熱交換パスとが、冷媒を凝縮させる冷媒凝縮パスであり、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスのうち上端の熱交換パスを除いた熱交換パスが、冷媒を過冷却する冷媒過冷却パスであり、第１ヘッダタンク内に、第１熱交換管からなる冷媒凝縮パスから第１ヘッダタンク内への液相冷媒の流れを促進する分流制御手段が設けられているので、冷媒封入の際に、液相冷媒が冷媒凝縮パスを構成する第１熱交換管から第１ヘッダタンク内に速やかに流入し、冷媒凝縮パスを構成する第１熱交換管内に溜まる液相冷媒の量が少なくなる。したがって、冷媒過冷却パスの第１熱交換管内を早い段階で液相冷媒で満たすことが可能になって、冷凍サイクルにおける冷媒封入量を、早い段階で、過冷度が一定となる適正封入量とすることが可能になる。しかも、過冷度が一定となる安定化域の幅、すなわち過冷度が一定となる冷媒封入量の幅が広くなるので、負荷変動や冷媒洩れに対してより安定した過冷特性が得られる。   Moreover, the heat exchange path | pass of the upper end of the heat exchange path | pass which consists of a 1st heat exchange pipe | tube connected to the 1st header tank, and the heat exchange path | pass which consists of a 2nd heat exchange pipe | tube connected to the 2nd header tank A refrigerant condensing path for condensing the refrigerant, wherein the heat exchanging path excluding the upper end heat exchanging path among the heat exchanging paths composed of the first heat exchanging pipes connected to the first header tank supercools the refrigerant. Since it is a supercooling path and a diversion control means for accelerating the flow of the liquid phase refrigerant from the refrigerant condensing path consisting of the first heat exchange pipe into the first header tank is provided in the first header tank, At the time of sealing, the amount of liquid phase refrigerant that quickly flows into the first header tank from the first heat exchange pipe constituting the refrigerant condensation path and accumulates in the first heat exchange pipe constituting the refrigerant condensation path Less. Accordingly, the first heat exchange pipe of the refrigerant supercooling path can be filled with the liquid phase refrigerant at an early stage, and the amount of refrigerant charged in the refrigeration cycle can be set to an appropriate amount at which the degree of supercooling becomes constant at an early stage. It becomes possible. In addition, since the width of the stabilization region where the degree of supercooling is constant, that is, the range of the refrigerant filling amount where the degree of supercooling is constant is widened, more stable supercooling characteristics against load fluctuations and refrigerant leakage can be obtained. .

特に、分流制御手段の仕切部に形成された絞り機能を有する開口の働きによって、冷媒流入空間内の圧力が気液分離空間内の圧力よりも大きくなり、その結果冷媒流入空間内の液相冷媒が下方へと押し下げられる。したがって、液相冷媒が冷媒凝縮パスを構成する第１熱交換管から第１ヘッダタンク内に速やかに流入し、冷媒凝縮パスを構成する第１熱交換管内に溜まる液相冷媒の量が少なくなる。 In particular, the pressure in the refrigerant inflow space becomes larger than the pressure in the gas-liquid separation space by the action of the opening having a throttling function formed in the partition part of the flow control means, and as a result, the liquid phase refrigerant in the refrigerant inflow space. Is pushed down. Therefore, the liquid-phase refrigerant quickly flows into the first header tank from the first heat exchange pipe constituting the refrigerant condensation path, and the amount of the liquid-phase refrigerant accumulated in the first heat exchange pipe constituting the refrigerant condensation path is reduced. .

しかも、第１ヘッダタンク内に設けられ、かつ第１熱交換管からなる冷媒凝縮パスから第１ヘッダタンク内への液相冷媒の流れを促進する分流制御手段の構成が比較的簡単になる。 In addition, the configuration of the diversion control means that is provided in the first header tank and promotes the flow of the liquid-phase refrigerant from the refrigerant condensing path including the first heat exchange pipe into the first header tank becomes relatively simple.

さらに、上記3)のコンデンサによれば、第１熱交換管からなる冷媒凝縮パスから第１ヘッダタンク内への液相冷媒の流れを効果的に促進することができる。 Further, according to the capacitor 3), it is possible to effectively promote the flow of the liquid phase refrigerant from the refrigerant condensing path including the first heat exchange pipe into the first header tank.

上記7)のコンデンサによれば、たとえば分流制御手段の構成が上記5)および6)のような構成である場合、コンデンサの製造時に、第１ヘッダタンクの筒状本体のみを他の部品と同時に一括してろう付しておき、分流制御手段を筒状本体内に入れた後に閉鎖部材を筒状本体の開口端部に着脱自在に取り付けることができる。 According to the capacitor of the above 7) , for example, when the configuration of the shunt control means is the configuration as in the above 5) and 6) , at the time of manufacturing the capacitor, only the cylindrical main body of the first header tank is used simultaneously with other components. The closing member can be detachably attached to the opening end of the cylindrical body after brazing all together and putting the flow dividing control means in the cylindrical body.

上記8)のコンデンサによれば、下端に位置する冷媒凝縮パスを構成する複数の熱交換管から第１ヘッダタンク内に冷媒が流入し、第１ヘッダタンク内で気液を分離するので、圧力降下の発生を抑制して液相冷媒の再気化を防止することができる。 According to the condenser of 8) above, the refrigerant flows into the first header tank from the plurality of heat exchange tubes constituting the refrigerant condensation path located at the lower end, and the gas and liquid are separated in the first header tank. It is possible to prevent the liquid phase refrigerant from being re-vaporized by suppressing the occurrence of the drop.

また、上記8)のコンデンサによれば、下端に位置する冷媒凝縮パスを構成する複数の熱交換管から第１ヘッダタンク内に冷媒が流入し、第１ヘッダタンク内で気液を分離するので、第１ヘッダタンク内で気液分離を効率良く行うことができる。すなわち、冷媒凝縮パスを構成する複数の熱交換管のうちの上側の熱交換管内には気相成分の多い気液混相冷媒が流れ、同じく下側の熱交換管内には液相成分の多い気液混相冷媒が流れるが、これらの気液混相冷媒が混じり合うことなく第１ヘッダタンク内に流入するので、気液分離を効率良く行うことができる。 Further, according to the capacitor of the 8), and the refrigerant flows from the plurality of heat exchange tubes in the first header tank constituting the refrigerant condensing path located at the lower end, so to separate the gas and liquid within the first header tank The gas-liquid separation can be efficiently performed in the first header tank. That is, a gas-liquid mixed phase refrigerant with a large amount of gas phase component flows in the upper heat exchange tube among the plurality of heat exchange tubes constituting the refrigerant condensation path, and a gas with a large amount of liquid phase component in the lower heat exchange tube. Although the liquid-phase refrigerant flows, these gas-liquid refrigerants flow into the first header tank without being mixed, so that gas-liquid separation can be performed efficiently.

この発明によるコンデンサの全体構成を具体的に示す正面図である。It is a front view which shows concretely the whole structure of the capacitor | condenser by this invention. 図１に示すコンデンサを模式的に示す正面図である。FIG. 2 is a front view schematically showing the capacitor shown in FIG. 1. 図１に示すコンデンサの第１ヘッダタンクの部分を拡大して示す一部を省略した垂直縦断面図である。It is the vertical longitudinal cross-sectional view which abbreviate | omitted and showed the part which expanded and showed the part of the 1st header tank of the capacitor | condenser shown in FIG. 図３のＡ−Ａ線断面図である。FIG. 4 is a sectional view taken along line AA in FIG. 3. 図１に示すコンデンサの第１ヘッダタンクの一部分と冷媒通過用筒状体とを示す分解斜視図である。It is a disassembled perspective view which shows a part of 1st header tank of the capacitor | condenser shown in FIG. 1, and the cylindrical body for refrigerant | coolant passage. 図１に示すコンデンサを有するカーエアコンに冷媒を封入する際のコンデンサにおける冷媒の流れを模式的に示す図２の一部に相当する図である。It is a figure equivalent to a part of FIG. 2 which shows typically the flow of the refrigerant | coolant in a capacitor | condenser at the time of enclosing a refrigerant | coolant in the car air conditioner which has a capacitor | condenser shown in FIG. 図１に示すコンデンサを用いて行った実験結果を示すグラフである。It is a graph which shows the experimental result performed using the capacitor | condenser shown in FIG.

以下、この発明の実施形態を、図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

以下の説明において、図１の紙面裏側（図２の上側）を前、これと反対側を後というものとする。   In the following description, the back side of FIG. 1 (the upper side in FIG. 2) is the front, and the opposite side is the back.

また、以下の説明において、「アルミニウム」という用語には、純アルミニウムの他にアルミニウム合金を含むものとする。   In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

図１はこの発明によるコンデンサの全体構成を具体的に示し、図２はこの発明によるコンデンサを模式的に示す。図２においては、個々の熱交換管の図示は省略されるとともに、コルゲートフィン、サイドプレート、冷媒入口部材および冷媒出口部材の図示も省略されている。また、図３〜図５は図１のコンデンサの要部の構成を示す。   FIG. 1 specifically shows the overall configuration of a capacitor according to the present invention, and FIG. 2 schematically shows a capacitor according to the present invention. In FIG. 2, illustration of individual heat exchange tubes is omitted, and illustration of corrugated fins, side plates, a refrigerant inlet member, and a refrigerant outlet member is also omitted. 3 to 5 show the structure of the main part of the capacitor shown in FIG.

図１において、コンデンサ(1)は、幅方向を前後方向に向けるとともに長さ方向を左右方向に向けた状態で上下方向に間隔をおいて配置された複数のアルミニウム製扁平状熱交換管(2A)(2B)と、熱交換管(2A)(2B)の左右両端部がろう付により接続された上下方向にのびる３つのアルミニウム製ヘッダタンク(3)(4)(5)と、隣り合う熱交換管(2A)(2B)どうしの間および上下両端の熱交換管(2A)(2B)の外側に配置されて熱交換管(2A)(2B)にろう付されたアルミニウム製コルゲートフィン(6A)(6B)と、上下両端のコルゲートフィン(6A)(6B)の外側に配置されてコルゲートフィン(6A)(6B)にろう付されたアルミニウム製サイドプレート(7)とを備えており、上下に連続して並んだ複数の熱交換管(2A)(2B)からなる熱交換パス(P1)(P2)(P3)(P4)が上下に並んで３以上、ここでは４つ設けられている。４つの熱交換パスを、上から順に第１〜第４熱交換パス(P1)(P2)(P3)(P4)というものとする。各熱交換パス(P1)(P2)(P3)(P4)を構成する全ての熱交換管(2A)(2B)の冷媒流れ方向が同一となっているとともに、隣り合う２つの熱交換パスの熱交換管(2A)(2B)の冷媒流れ方向が異なっている。熱交換管(2A)(2B)の左右両端部はヘッダタンク(3)(4)(5)に形成された管挿通穴(3a)（図３および図５参照）に通された状態でヘッダタンク(3)(4)(5)にろう付されている。   In FIG. 1, a capacitor (1) has a plurality of flat aluminum heat exchange tubes (2A) spaced apart in the vertical direction with the width direction directed in the front-rear direction and the length direction directed in the left-right direction. ) (2B) and three aluminum header tanks (3), (4) and (5) extending in the vertical direction where the left and right ends of the heat exchange tubes (2A) and (2B) are connected by brazing. Aluminum corrugated fins (6A) placed between the exchange pipes (2A) (2B) and outside the heat exchange pipes (2A) (2B) at both upper and lower ends and brazed to the heat exchange pipes (2A) (2B) ) (6B) and an aluminum side plate (7) brazed to the corrugated fins (6A) (6B) arranged on the outside of the corrugated fins (6A) (6B) at both upper and lower ends. There are three or more heat exchange paths (P1), (P2), (P3), and (P4), each of which is composed of a plurality of heat exchange tubes (2A) and (2B) arranged in succession. The The four heat exchange paths are referred to as first to fourth heat exchange paths (P1) (P2) (P3) (P4) in order from the top. The refrigerant flow directions of all the heat exchange tubes (2A) (2B) constituting each heat exchange path (P1) (P2) (P3) (P4) are the same, and two adjacent heat exchange paths The refrigerant flow directions in the heat exchange tubes (2A) and (2B) are different. The left and right ends of the heat exchange pipes (2A) and (2B) are passed through the pipe insertion holes (3a) (see FIGS. 3 and 5) formed in the header tanks (3), (4) and (5). It is brazed to the tank (3) (4) (5).

図１および図２に示すように、コンデンサ(1)の左端側には、下端の熱交換パスを含みかつ連続して並んだ少なくとも２つの熱交換パス、ここでは第３および第４熱交換パス(P3)(P4)を構成する熱交換管(2A)がろう付により接続された第１ヘッダタンク(3)と、第１および第２熱交換パス(P1)(P2)を構成する熱交換管(2B)がろう付により接続された第２ヘッダタンク(4)とが別個に設けられている。ここで、第１ヘッダタンク(3)に接続された熱交換管(2A)が第１熱交換管であり、第２ヘッダタンク(4)に接続された熱交換管(2B)が第２熱交換管である。なお、隣り合う第１熱交換管(2A)どうしの間および下端の第１熱交換管(2A)と下側サイドプレート(7)との間に配置されたコルゲートフィン(6A)を第１コルゲートフィンといい、隣り合う第２熱交換管(2B)どうしの間および上端の第２熱交換管(2B)と上側サイドプレート(7)との間に配置されたコルゲートフィン(6B)を第２コルゲートフィンというものとする。   As shown in FIGS. 1 and 2, at the left end side of the condenser (1), there are at least two heat exchange paths, including the lower end heat exchange path and arranged in series, here, the third and fourth heat exchange paths. (P3) The first header tank (3) to which the heat exchange pipe (2A) constituting (P4) is connected by brazing and the heat exchange constituting the first and second heat exchange paths (P1) (P2) A second header tank (4) to which the pipe (2B) is connected by brazing is provided separately. Here, the heat exchange pipe (2A) connected to the first header tank (3) is the first heat exchange pipe, and the heat exchange pipe (2B) connected to the second header tank (4) is the second heat. It is an exchange tube. The corrugated fins (6A) disposed between the adjacent first heat exchange pipes (2A) and between the first heat exchange pipe (2A) at the lower end and the lower side plate (7) are connected to the first corrugate. The corrugated fins (6B) arranged between the adjacent second heat exchange pipes (2B) and between the upper second heat exchange pipe (2B) and the upper side plate (7) are referred to as fins. This is called a corrugated fin.

第１ヘッダタンク(3)と第２ヘッダタンク(4)との前後方向の寸法はほぼ等しくなっているが、水平断面積は第１ヘッダタンク(3)の方が第２ヘッダタンク(4)よりも大きくなっている。第１ヘッダタンク(3)は第２ヘッダタンク(4)よりも左方（左右方向外側）に配置されており、第１ヘッダタンク(3)の左右方向の中心が第２ヘッダタンク(4)の左右方向の中心よりも左右方向外側に位置しているとともに、第１および第２ヘッダタンク(3)(4)の前後方向の中心は左右方向にのびる同一垂直平面上に位置している。したがって、第１ヘッダタンク(3)と第２ヘッダタンク(4)とは、平面から見て重なることなくずれている。また、第１ヘッダタンク(3)の上端は第２ヘッダタンク(4)の下端よりも上方、ここでは第２ヘッダタンク(4)の上端とほぼ同一高さ位置にあり、第１ヘッダタンク(3)が、重力を利用して気液を分離しかつ液を溜める受液部としての機能を有している。すなわち、第１ヘッダタンク(3)の内容積は、第１ヘッダタンク(3)内に流入した気液混相冷媒のうち液相主体混相冷媒が重力により第１ヘッダタンク(3)内の下部に溜まるとともに、気液混相冷媒のうちの気相成分が重力により第１ヘッダタンク(3)内の上部に溜まり、これにより第４熱交換パス(P4)の第１熱交換管(2A)内には液相主体混相冷媒が流入するような内容積となっている。   The front and rear dimensions of the first header tank (3) and the second header tank (4) are substantially the same, but the horizontal header is larger in the first header tank (3) than in the second header tank (4). Is bigger than. The first header tank (3) is arranged on the left side (outside in the left-right direction) of the second header tank (4), and the center in the left-right direction of the first header tank (3) is the second header tank (4). The center of the first and second header tanks (3) and (4) in the front-rear direction is located on the same vertical plane extending in the left-right direction. Therefore, the first header tank (3) and the second header tank (4) are displaced without overlapping when seen from the plane. Also, the upper end of the first header tank (3) is above the lower end of the second header tank (4), here, at the same height as the upper end of the second header tank (4). 3) has a function as a liquid receiving part that separates gas and liquid using gravity and stores the liquid. That is, the internal volume of the first header tank (3) is such that the liquid-phase mixed refrigerant flows into the lower part of the first header tank (3) due to gravity. At the same time, the gas phase component of the gas-liquid mixed-phase refrigerant is accumulated in the upper part of the first header tank (3) due to gravity, and thereby enters the first heat exchange pipe (2A) of the fourth heat exchange path (P4). The internal volume is such that the liquid-phase main mixed refrigerant flows in.

コンデンサ(1)の右端部側には、第１〜第４熱交換パス(P1)〜(P4)を構成するすべての熱交換管(2A)(2B)が接続される第３ヘッダタンク(5)が配置されている。第３ヘッダタンク(5)の横断面形状は第２ヘッダタンク(4)と同一である。第３ヘッダタンク(5)内は、第１熱交換パス(P1)と第２熱交換パス(P2)との間の高さ位置、および第３熱交換パス(P3)と第４熱交換パス(P4)との間の高さ位置にそれぞれ設けられたアルミニウム製仕切板(8)(9)により上側ヘッダ部(11)と、中間ヘッダ部(12)と、下側ヘッダ部(13)とに区画されている。第１熱交換パス(P1)の第２熱交換管(2B)の左端部は第２ヘッダタンク(4)に、同右端部は第３ヘッダタンク(5)の上側ヘッダ部(11)にそれぞれ接続され、第２熱交換パス(P2)の第２熱交換管(2B)の左端部は第２ヘッダタンク(4)に、同右端部は第３ヘッダタンク(5)の中間ヘッダ部(12)にそれぞれ接続され、第３熱交換パス(P3)の第１熱交換管(2A)の左端部は第１ヘッダタンク(3)に、同右端部は第３ヘッダタンク(5)の中間ヘッダ部(12)にそれぞれ接続され、第４熱交換パス(P4)の第１熱交換管(2A)の左端部は第１ヘッダタンク(3)に、同右端部は第３ヘッダタンク(5)の下側ヘッダ部(13)にそれぞれ接続されている。   A third header tank (5) to which all the heat exchange pipes (2A) (2B) constituting the first to fourth heat exchange paths (P1) to (P4) are connected to the right end side of the condenser (1). ) Is arranged. The cross-sectional shape of the third header tank (5) is the same as that of the second header tank (4). The third header tank (5) has a height position between the first heat exchange path (P1) and the second heat exchange path (P2), and the third heat exchange path (P3) and the fourth heat exchange path. Aluminum partition plates (8) and (9) respectively provided at a height position between (P4) and the upper header portion (11), the intermediate header portion (12), and the lower header portion (13) It is divided into. The left end of the second heat exchange pipe (2B) of the first heat exchange path (P1) is the second header tank (4), and the right end is the upper header (11) of the third header tank (5). The left end of the second heat exchange pipe (2B) of the second heat exchange path (P2) is connected to the second header tank (4), and the right end is the intermediate header (12) of the third header tank (5). ), The left end of the first heat exchange pipe (2A) of the third heat exchange path (P3) is the first header tank (3), and the right end is the intermediate header of the third header tank (5). The left end of the first heat exchange pipe (2A) of the fourth heat exchange path (P4) is connected to the first header tank (3) and the right end is connected to the third header tank (5). Are connected to the lower header section (13).

そして、第２ヘッダタンク(4)、第１ヘッダタンク(3)における第３熱交換パス(P3)の第１熱交換管(2A)が接続された部分、第３ヘッダタンク(5)の上側ヘッダ部(11)および中間ヘッダ部(12)、ならびに第１〜第３熱交換パス(P1)〜(P3)により冷媒を凝縮させる凝縮部(1A)が形成され、第１ヘッダタンク(3)における第４熱交換パス(P4)の第１熱交換管(2A)が接続された部分、第３ヘッダタンク(5)の下側ヘッダ部(13)および第４熱交換パス(P4)により冷媒を過冷却する過冷却部(1B)が形成され、第１〜第３熱交換パス(P1)〜(P3)が冷媒を凝縮させる冷媒凝縮パスとなっているとともに、第４熱交換パス(P4)が冷媒を過冷却する冷媒過冷却パスとなっている。   The second header tank (4), the portion of the first header tank (3) where the first heat exchange pipe (2A) of the third heat exchange path (P3) is connected, the upper side of the third header tank (5) The header section (11), the intermediate header section (12), and the first to third heat exchange paths (P1) to (P3) form a condensing section (1A) for condensing the refrigerant, and the first header tank (3) In the fourth heat exchange path (P4) in which the first heat exchange pipe (2A) is connected, the lower header portion (13) of the third header tank (5) and the fourth heat exchange path (P4). A supercooling section (1B) for supercooling is formed, and the first to third heat exchange paths (P1) to (P3) serve as a refrigerant condensation path for condensing the refrigerant, and a fourth heat exchange path (P4 ) Is a refrigerant supercooling path for supercooling the refrigerant.

凝縮部(1A)を構成する第３ヘッダタンク(5)の上側ヘッダ部(11)に冷媒入口(14)が形成され、過冷却部(1B)を構成する第３ヘッダタンク(5)の下側ヘッダ部(13)に冷媒出口(15)が形成されている。そして、第３ヘッダタンク(5)に、冷媒入口(14)に通じる冷媒入口部材(16)および冷媒出口(15)に通じる冷媒出口部材(17)が接合されている。   A refrigerant inlet (14) is formed in the upper header part (11) of the third header tank (5) constituting the condensing part (1A), and is located under the third header tank (5) constituting the supercooling part (1B). A refrigerant outlet (15) is formed in the side header portion (13). A refrigerant inlet member (16) communicating with the refrigerant inlet (14) and a refrigerant outlet member (17) communicating with the refrigerant outlet (15) are joined to the third header tank (5).

第３熱交換パス(P3)の上端の第１熱交換管(2A)と第２熱交換パス(P2)の下端の第２熱交換管(2B)との間に、これらの熱交換管(2A)(2B)と離隔するとともに、両熱交換管(2A)(2B)とほぼ平行になるように、左右方向にのびるアルミニウム製中間部材(18)が配置されている。第３熱交換パス(P3)の上端の第１熱交換管(2A)と中間部材(18)との間には第１コルゲートフィン(6A)が配置されて第１熱交換管(2A)および中間部材(18)にろう付され、第２熱交換パス(P2)の下端の第２熱交換管(2B)と中間部材(18)との間には第２コルゲートフィン(6B)が配置されて第２熱交換管(2B)および中間部材(18)にろう付されている。中間部材(18)の左右両端部は、第１ヘッダタンク(3)および第３ヘッダタンク(5)に近接した位置にあって第１ヘッダタンク(3)および第３ヘッダタンク(5)内には挿入されていない。中間部材(18)としては、第２熱交換管(2B)と同一構成の管が用いられている。中間部材(18)の両端部は第１ヘッダタンク(3)内および第３ヘッダタンク(5)内に挿入されていないので、第２熱交換管(2B)と同一構成の管を用いることが可能になっている。   Between the first heat exchange pipe (2A) at the upper end of the third heat exchange path (P3) and the second heat exchange pipe (2B) at the lower end of the second heat exchange path (P2), these heat exchange pipes ( An aluminum intermediate member (18) extending in the left-right direction is disposed so as to be separated from 2A) and (2B) and substantially parallel to both heat exchange tubes (2A) and (2B). A first corrugated fin (6A) is disposed between the first heat exchange pipe (2A) at the upper end of the third heat exchange path (P3) and the intermediate member (18), and the first heat exchange pipe (2A) and The second corrugated fin (6B) is disposed between the second heat exchange pipe (2B) at the lower end of the second heat exchange path (P2) and the intermediate member (18) by brazing to the intermediate member (18). The second heat exchange pipe (2B) and the intermediate member (18) are brazed. The left and right ends of the intermediate member (18) are located close to the first header tank (3) and the third header tank (5), and are in the first header tank (3) and the third header tank (5). Is not inserted. As the intermediate member (18), a tube having the same configuration as the second heat exchange tube (2B) is used. Since both ends of the intermediate member (18) are not inserted into the first header tank (3) and the third header tank (5), a pipe having the same configuration as the second heat exchange pipe (2B) may be used. It is possible.

第１ヘッダタンク(3)は、両端が開口した円筒状体および円筒状体の下端部にろう付された底部材からなり、かつ上端が開口するとともに下端が閉鎖されたアルミニウム製筒状本体(21)と、筒状本体(21)の上端部に着脱自在に取り付けられて筒状本体(21)の上端開口を閉鎖する閉鎖部材(22)とにより構成されている。   The first header tank (3) is composed of a cylindrical body having both ends opened and a bottom member brazed to the lower end of the cylindrical body, and an aluminum tubular body having an upper end opened and a lower end closed ( 21) and a closing member (22) that is detachably attached to the upper end of the cylindrical main body (21) and closes the upper end opening of the cylindrical main body (21).

図３〜図５に示すように、第１ヘッダタンク(3)内に、第３熱交換パス(P3)（第１熱交換管(2A)からなる冷媒凝縮パス）から第１ヘッダタンク(3)内への液相冷媒の流れを促進する分流制御手段(23)が設けられている。分流制御手段(23)は、第１ヘッダタンク(3)内を、第３熱交換パス(P3)の少なくとも一部の第１熱交換管(2A)、ここではすべての第１熱交換管(2A)が通じる密閉状の冷媒流入空間(24)と、残りの気液分離空間(25)とに区画する仕切部(26)を備えており、仕切部(26)の下部に、絞り機能を有しかつ冷媒流入空間(24)と気液分離空間(25)とを通じさせる開口(27)が、冷媒流入空間(24)に通じる第３熱交換パス(P3)の第１熱交換管(2A)が配置されている上下方向の範囲の上下方向の中央部よりも下方に設けられている。当該開口(27)の流路断面積は、冷媒流入空間(24)に通じる第３熱交換パス(P3)の全第１熱交換管(2A)の総流路断面積の７０％以下であることが好ましい。その理由は、冷媒凝縮パスである第３熱交換パス(P3)の全第１熱交換管(2A)から第１ヘッダタンク(3)内への液相冷媒の流れを効果的に促進することができるからである。   As shown in FIGS. 3 to 5, in the first header tank (3), from the third heat exchange path (P3) (the refrigerant condensing path consisting of the first heat exchange pipe (2A)) to the first header tank (3 ) Is provided with a diversion control means (23) for accelerating the flow of the liquid-phase refrigerant. The diversion control means (23) passes through the first header tank (3) in the first heat exchange pipe (2A) of at least a part of the third heat exchange path (P3), here all the first heat exchange pipes ( 2A) is provided with a partition part (26) that divides into a sealed refrigerant inflow space (24) that communicates with the remaining gas-liquid separation space (25), and a throttle function is provided below the partition part (26). The first heat exchange pipe (2A) of the third heat exchange path (P3) having an opening (27) through which the refrigerant inflow space (24) and the gas-liquid separation space (25) pass are connected to the refrigerant inflow space (24). ) Is disposed below the central portion in the vertical direction of the vertical range. The channel cross-sectional area of the opening (27) is 70% or less of the total channel cross-sectional area of all the first heat exchange tubes (2A) of the third heat exchange path (P3) leading to the refrigerant inflow space (24). It is preferable. The reason is to effectively promote the flow of the liquid phase refrigerant from all the first heat exchange pipes (2A) of the third heat exchange path (P3), which is the refrigerant condensation path, into the first header tank (3). Because you can.

仕切部(26)は、長さ方向を上下方向に向けるとともに、通風方向の両側縁が第１ヘッダタンク(3)の筒状本体(21)の周壁(21a)内周面における管挿通穴(3a)の通風方向の両側部分に接触した囲繞壁(28)と、囲繞壁(28)の上下両端に設けられ、かつ第１ヘッダタンク(3)の筒状本体(21)の周壁(21a)と囲繞壁(28)とに囲まれた冷媒流入空間(24)の上下両端開口を閉鎖する頂壁(29)および底壁(31)とよりなり、囲繞壁(28)の下部に開口(27)が形成されている。   The partition portion (26) has a longitudinal direction directed vertically, and both side edges in the ventilation direction are pipe insertion holes (in the inner peripheral surface of the peripheral wall (21a) of the cylindrical main body (21) of the first header tank (3)). The surrounding wall (21a) of the cylindrical main body (21) of the first header tank (3) provided on the upper and lower ends of the surrounding wall (28) in contact with both sides of the ventilation direction of 3a) And a top wall (29) and a bottom wall (31) for closing both upper and lower openings of the refrigerant inflow space (24) surrounded by the surrounding wall (28), and an opening (27 ) Is formed.

仕切部(26)の囲繞壁(28)の両側縁部どうしは、第１ヘッダタンク(3)の筒状本体(21)の周壁(21a)内周面に沿う連結部(32)を介して一体に連結されており、囲繞壁(28)および連結部(32)により上下両端が開口した冷媒通過用筒状体(33)が形成されている。筒状体(33)の形状は、円筒状周壁の周方向の一部分を全長にわたって内方に凹ませたような形状である。冷媒通過用筒状体(33)の下端には内方張り出し部(34)が一体に形成されている。内方張り出し部(34)の内周縁部に、上端が開口するとともに下端が閉鎖され、かつ下方に突出した有底筒状の延長部(35)が一体に設けられている。延長部(35)は、第１ヘッダタンク(3)内における第４熱交パス(P4)（下端の冷媒凝縮パスに隣接する冷媒過冷却パス）の第１熱交換管(2A)が通じる部分に位置している。たとえば、仕切部(26)の囲繞壁(28)および連結部(32)よりなる冷媒通過用筒状体(33)、頂壁(29)および延長部(35)は、合成樹脂により一体に成形されている。   Both side edges of the surrounding wall (28) of the partition part (26) are connected via a connecting part (32) along the inner peripheral surface of the peripheral wall (21a) of the cylindrical body (21) of the first header tank (3). A refrigerant passing tubular body (33) is formed that is integrally connected and is open at both upper and lower ends by the surrounding wall (28) and the connecting portion (32). The shape of the cylindrical body (33) is such that a portion of the cylindrical peripheral wall in the circumferential direction is recessed inward over its entire length. An inward projecting portion (34) is integrally formed at the lower end of the refrigerant passing tubular body (33). At the inner peripheral edge of the inwardly projecting portion (34), a bottomed cylindrical extension (35) that is open at the top and closed at the bottom and protrudes downward is integrally provided. The extension portion (35) is a portion through which the first heat exchange pipe (2A) of the fourth heat exchange path (P4) in the first header tank (3) (the refrigerant supercooling path adjacent to the refrigerant condensation path at the lower end) communicates. Is located. For example, the refrigerant passing tubular body (33), the top wall (29) and the extension portion (35) composed of the surrounding wall (28) and the connecting portion (32) of the partition portion (26) are integrally formed of synthetic resin. Has been.

第１ヘッダタンク(3)の筒状本体(21)の周壁(21a)と冷媒通過用筒状体(33)の間に、第１ヘッダタンク(3)内を、第４熱交換パス(P4)の第１熱交換管(2A)が通じている第１部分(36)と、第１部分(36)よりも上方の第２部分(37)とに仕切る区画部(38)が設けられている。冷媒通過用筒状体(23)の延長部(35)の周壁に、第１ヘッダタンク(3)内の区画部(38)よりも下方の第１部分(36)に開口した上下方向に長い第１連通口(39)が周方向に間隔をおいて複数形成されており、第１連通口(39)がメッシュ状のフィルタ(41)により塞がれている。また、冷媒通過用筒状体(33)の上端開口が、第１ヘッダタンク(3)内の第２部分(37)に開口した第２連通口(42)となっている。ここでは、第２連通口(42)はフィルタにより塞がれてはいないが、第１連通口(39)に代えて第２連通口(42)がフィルタにより塞がれていてもよく、あるいは両連通口(39)(42)がフィルタにより塞がれていてもよい。メッシュ状のフィルタ(41)の目の大きさは、１インチの長さ間に１００以上の数の目が存在するような大きさであることが好ましい。フィルタ(41)は、冷媒通過用筒状体(33)の延長部(35)の周壁と一体に形成されていてもよいし、あるいは延長部(35)の周壁とは別個に形成されたものが周壁に固着されていてもよい。   Between the peripheral wall (21a) of the cylindrical main body (21) of the first header tank (3) and the refrigerant passage cylindrical body (33), the inside of the first header tank (3) is passed through the fourth heat exchange path (P4 ) Is provided with a partition part (38) for partitioning the first part (36) through which the first heat exchange pipe (2A) communicates and the second part (37) above the first part (36). Yes. The peripheral wall of the extension (35) of the refrigerant passage cylindrical body (23) is long in the vertical direction opened to the first portion (36) below the partition (38) in the first header tank (3). A plurality of first communication ports (39) are formed at intervals in the circumferential direction, and the first communication ports (39) are closed by a mesh-like filter (41). The upper end opening of the refrigerant passage tubular body (33) is a second communication port (42) opened to the second portion (37) in the first header tank (3). Here, the second communication port (42) is not blocked by the filter, but the second communication port (42) may be blocked by the filter instead of the first communication port (39), or Both communication ports (39) and (42) may be closed by a filter. The size of the mesh-shaped filter (41) is preferably such that there are 100 or more eyes in the length of 1 inch. The filter (41) may be formed integrally with the peripheral wall of the extension (35) of the refrigerant passage tubular body (33), or formed separately from the peripheral wall of the extension (35). May be fixed to the peripheral wall.

仕切部(26)の底壁(31)、および第１ヘッダタンク(3)内を第１部分(36)と第２部分(37)とに区画する区画部(38)は、第１ヘッダタンク(3)の筒状本体(21)の周壁(21a)に形成されたスリット(43)に外側から挿入されて周壁(21a)にろう付されたアルミニウム製板状体(44)からなる。板状体(44)には冷媒通過用筒状体(33)の延長部(35)を通す貫通穴(45)が形成されており、延長部(35)が貫通穴(45)に密に通されるとともに、板状体(44)における貫通穴(45)の周囲の部分に冷媒通過用筒状体(33)の囲繞壁(28)および連結部(32)の下端が接触している。そして、板状体(44)における冷媒通過用筒状体(33)の囲繞壁(28)よりも第１熱交換管(2A)側の部分が、仕切部(26)の底壁(31)となっており、板状体(44)の第１ヘッダタンク(3)内に存在する部分における貫通穴(45)の周囲の部分が区画部(38)となっている。ここでは、底壁(31)は区画部(38)と同じである。   The partition wall (31) that partitions the bottom wall (31) of the partition (26) and the first header tank (3) into a first part (36) and a second part (37) is a first header tank. The aluminum plate-like body (44) inserted from the outside into the slit (43) formed on the peripheral wall (21a) of the cylindrical main body (21) and brazed to the peripheral wall (21a). The plate-like body (44) is formed with a through hole (45) through which the extension (35) of the refrigerant passing tubular body (33) passes, and the extension (35) is closely connected to the through hole (45). And the lower end of the surrounding wall (28) of the refrigerant passing tubular body (33) and the lower end of the connecting portion (32) are in contact with the portion around the through hole (45) in the plate-like body (44). . Then, the portion of the plate-like body (44) closer to the first heat exchange pipe (2A) than the surrounding wall (28) of the refrigerant passing tubular body (33) is the bottom wall (31) of the partition portion (26). The portion around the through hole (45) in the portion of the plate-like body (44) in the first header tank (3) is the partition portion (38). Here, the bottom wall (31) is the same as the partition part (38).

なお、図示は省略したが、第１ヘッダタンク(3)内の分流制御手段(23)よりも上方の部分には、乾燥剤が配置されていてもよい。   In addition, although illustration was abbreviate | omitted, the desiccant may be arrange | positioned in the part above the diversion control means (23) in a 1st header tank (3).

コンデンサ(1)は、仕切部(26)の囲繞壁(28)および連結部(32)よりなる冷媒通過用筒状体(33)、冷媒通過用筒状体(33)に一体に設けられた頂壁(29)および延長部(35)、ならびに閉鎖部材(22)を除く全部品を一括してろう付した後、第１ヘッダタンク(3)の筒状本体(21)内に上方から冷媒通過用筒状体(33)を入れるとともに、冷媒通過用筒状体(33)の延長部(35)を板状体(44)の貫通穴(45)に通し、ついで閉鎖部材(22)を筒状本体(21)に取り付けることにより製造される。   The condenser (1) is provided integrally with the refrigerant passage cylindrical body (33) and the refrigerant passage cylindrical body (33) formed of the surrounding wall (28) of the partition section (26) and the connecting portion (32). After brazing all parts except for the top wall (29) and the extension (35) and the closing member (22) together, the refrigerant enters the cylindrical body (21) of the first header tank (3) from above. Insert the passage cylindrical body (33), pass the extension (35) of the refrigerant passage cylindrical body (33) through the through hole (45) of the plate body (44), and then insert the closing member (22). It is manufactured by being attached to the cylindrical main body (21).

コンデンサ(1)は、圧縮機、膨張弁（減圧器）およびエバポレータとともに冷凍サイクルを構成し、カーエアコンとして車両に搭載される。   The condenser (1) constitutes a refrigeration cycle together with a compressor, an expansion valve (decompressor) and an evaporator, and is mounted on a vehicle as a car air conditioner.

上述した構成のコンデンサ(1)において、圧縮機により圧縮された高温高圧の気相冷媒が、冷媒入口部材(16)および冷媒入口(14)を通って第３ヘッダタンク(5)の上側ヘッダ部(11)内に流入し、第１熱交換パス(P1)の第２熱交換管(2B)内を左方に流れる間に凝縮させられて第２ヘッダタンク(4)内に流入する。第２ヘッダタンク(4)内に流入した冷媒は、第２熱交換パス(P2)の第２熱交換管(2B)内を右方に流れる間に凝縮させられて第３ヘッダタンク(5)の中間ヘッダ部(12)内に流入する。第３ヘッダタンク(5)の中間ヘッダ部(12)内に流入した冷媒は第３熱交換パス(P3)の第１熱交換管(2A)内を左方に流れる間に凝縮させられて第１ヘッダタンク(3)内の冷媒流入空間(24)に流入する。   In the condenser (1) having the above-described configuration, the high-temperature and high-pressure gas-phase refrigerant compressed by the compressor passes through the refrigerant inlet member (16) and the refrigerant inlet (14), and the upper header portion of the third header tank (5). (11) flows into the second heat exchange pipe (2B) of the first heat exchange path (P1) and is condensed while flowing leftward and flows into the second header tank (4). The refrigerant flowing into the second header tank (4) is condensed while flowing to the right in the second heat exchange pipe (2B) of the second heat exchange path (P2), and the third header tank (5). Into the intermediate header portion (12). The refrigerant flowing into the intermediate header portion (12) of the third header tank (5) is condensed while flowing leftward in the first heat exchange pipe (2A) of the third heat exchange path (P3). 1 flows into the refrigerant inflow space (24) in the header tank (3).

第１ヘッダタンク(3)内の冷媒流入空間(24)に流入した冷媒は開口(27)を通って冷媒通過用筒状体(33)内に入る。冷媒通過用筒状体(33)内に入った冷媒は気液混相冷媒であり、当該気液混相冷媒のうち液相主体混相冷媒は重力により第１ヘッダタンク(3)内の下部に溜まり、第１連通口(39)を経て第４熱交換パス(P4)の第１熱交換管(2A)内に入る。   The refrigerant that has flowed into the refrigerant inflow space (24) in the first header tank (3) enters the refrigerant passage cylindrical body (33) through the opening (27). The refrigerant that has entered the refrigerant passage cylindrical body (33) is a gas-liquid mixed phase refrigerant, and the liquid-phase main mixed phase refrigerant of the gas-liquid mixed phase refrigerant is accumulated in the lower part of the first header tank (3) due to gravity, It enters the first heat exchange pipe (2A) of the fourth heat exchange path (P4) through the first communication port (39).

第４熱交換パス(P4)の第１熱交換管(2A)内に入った液相主体混相冷媒は第１熱交換管(2A)内を右方に流れる間に過冷却された後、第３ヘッダタンク(5)の下側ヘッダ部(13)内に入り、冷媒出口(15)および冷媒出口部材(17)を通って流出し、膨張弁を経てエバポレータに送られる。   The liquid phase main mixed refrigerant entering the first heat exchange pipe (2A) of the fourth heat exchange path (P4) is supercooled while flowing rightward in the first heat exchange pipe (2A), It enters the lower header section (13) of the three header tank (5), flows out through the refrigerant outlet (15) and the refrigerant outlet member (17), and is sent to the evaporator through the expansion valve.

一方、冷媒通過用筒状体(33)内に流入した気液混相冷媒のうちの気相成分は、第１ヘッダタンク(3)内の上部に溜まる。   On the other hand, the gas phase component of the gas-liquid mixed phase refrigerant that has flowed into the refrigerant passage cylindrical body (33) is accumulated in the upper part of the first header tank (3).

上述したカーエアコンに冷媒を封入する際には、分流制御手段(23)の仕切部(26)に設けられた絞り機能を有する開口(27)の働きによって、冷媒流入空間(24)内の圧力が気液分離空間(25)内の圧力よりも高くなるので、図６に示すように、冷媒流入空間(24)内の液相冷媒(L)が下方へと押し下げられる。したがって、液相冷媒(L)が第３熱交換パス(P3)の第１熱交換管(2A)（冷媒凝縮パスを構成する第１熱交換管）から第１ヘッダタンク(3)内の気液分離空間(25)に速やかに流入し、第３熱交換パス(P3)を構成する第１熱交換管(2A)内に溜まる液相冷媒(L)の量が少なくなる。その結果、第４熱交換パス(P4)（冷媒過冷却パス）の第１熱交換管(2A)内を早い段階で液相冷媒(L)で満たすことが可能となって、冷凍サイクルにおける冷媒封入量を、早い段階で、過冷度が一定となる適正封入量とすることが可能になる。しかも、過冷度が一定となる安定化域の幅、すなわち過冷度が一定となる冷媒封入量の幅が広くなるので、負荷変動や冷媒洩れに対してより安定した過冷特性が得られる。   When the refrigerant is sealed in the car air conditioner described above, the pressure in the refrigerant inflow space (24) is reduced by the action of the opening (27) having a throttling function provided in the partition (26) of the flow dividing control means (23). Is higher than the pressure in the gas-liquid separation space (25), the liquid phase refrigerant (L) in the refrigerant inflow space (24) is pushed downward as shown in FIG. Accordingly, the liquid-phase refrigerant (L) flows from the first heat exchange pipe (2A) of the third heat exchange path (P3) (the first heat exchange pipe constituting the refrigerant condensation path) into the air in the first header tank (3). The amount of liquid-phase refrigerant (L) that quickly flows into the liquid separation space (25) and accumulates in the first heat exchange pipe (2A) constituting the third heat exchange path (P3) decreases. As a result, the first heat exchange pipe (2A) of the fourth heat exchange path (P4) (refrigerant supercooling path) can be filled with the liquid phase refrigerant (L) at an early stage, and the refrigerant in the refrigeration cycle It is possible to set the amount of sealing to an appropriate amount of sealing at which the degree of supercooling is constant at an early stage. In addition, since the width of the stabilization region where the degree of supercooling is constant, that is, the range of the refrigerant filling amount where the degree of supercooling is constant is widened, more stable supercooling characteristics against load fluctuations and refrigerant leakage can be obtained. .

次に、上述した構成のコンデンサ(1)を用いて行った実験例について説明する。   Next, an experimental example performed using the capacitor (1) having the above-described configuration will be described.

すなわち、コンデンサ(1)、圧縮機、膨張弁およびエバポレータを用いて冷凍サイクルを組み立て、これらの冷凍サイクル内に最初に所定量の冷媒を入れて冷凍サイクルの運転を開始し、冷媒を継ぎ足しつつ種々の冷媒封入量における過冷度を調べてチャージグラフを作成した。その結果を図７に示す。図７に示すチャージグラフにおいて、Ａ点がコンデンサ(1)から流出してきた冷媒の過冷却が開始された点であり、Ｂ点がコンデンサ(1)の第４熱交換パス(P4)の第１熱交換管(2A)内が液相冷媒(L)で満たされた点であり、Ｃ点がコンデンサ(1)の第１ヘッダタンク(3)内が液相冷媒(L)で満たされた点である。そして、図７を見ると、冷凍サイクルにおける冷媒封入量を、早い段階で、過冷度が一定となる適正封入量とすることが可能になる。しかも、過冷度が一定となる安定化域の幅、すなわち過冷度が一定となる冷媒封入量の幅が広くなるので、負荷変動や冷媒洩れに対してより安定した過冷特性が得られる。   In other words, a refrigeration cycle is assembled using a condenser (1), a compressor, an expansion valve, and an evaporator, and a predetermined amount of refrigerant is first put into these refrigeration cycles to start operation of the refrigeration cycle. A charge graph was created by examining the degree of supercooling in the amount of refrigerant charged. The result is shown in FIG. In the charge graph shown in FIG. 7, point A is the point at which supercooling of the refrigerant flowing out of the condenser (1) is started, and point B is the first heat exchange path (P4) of the condenser (1). The point where the heat exchange pipe (2A) is filled with the liquid phase refrigerant (L), and the point C is the point where the inside of the first header tank (3) of the condenser (1) is filled with the liquid phase refrigerant (L). It is. And when FIG. 7 is seen, it becomes possible to make the refrigerant | coolant enclosure amount in a refrigerating cycle into the appropriate enclosure amount with which a degree of supercooling becomes constant at an early stage. In addition, since the width of the stabilization region where the degree of supercooling is constant, that is, the range of the refrigerant filling amount where the degree of supercooling is constant is widened, more stable supercooling characteristics against load fluctuations and refrigerant leakage can be obtained. .

この発明によるコンデンサは、自動車に搭載されるカーエアコンに好適に用いられる。   The capacitor | condenser by this invention is used suitably for the car air conditioner mounted in a motor vehicle.

(1)：コンデンサ
(1A)：凝縮部
(1B)：過冷却部
(2A)：第１熱交換管
(2B)：第２熱交換管
(3)：第１ヘッダタンク
(4)：第２ヘッダタンク
(5)：第３ヘッダタンク
(21)：筒状本体
(21a)：周壁
(22)：閉鎖部材
(23)：分流制御手段
(24)：冷媒流入空間
(25)：気液分離空間
(26)：仕切部
(27)：絞り機能を有する開口
(28)：囲繞壁
(29)：頂壁
(31)：底壁
(32)：連結部
(33)：冷媒通過用筒状体
(35)：延長部
(36)：第１部分
(37)：第２部分
(38)：区画部
(39)：第１連通口
(41)：フィルタ
(42)：第２連通口
(44)：板状体
(45)：貫通穴
(P1)：第１熱交換パス
(P2)：第２熱交換パス
(P3)：第３熱交換パス
(P4)：第４熱交換パス
(1): Capacitor
(1A): Condensing part
(1B): Supercooling section
(2A): 1st heat exchange tube
(2B): Second heat exchange tube
(3): First header tank
(4) : Second header tank
(5): Third header tank
(21): Tubular body
(21a): Perimeter wall
(22): Closing member
(23) ： Diversion control means
(24): Refrigerant inflow space
(25): Gas-liquid separation space
(26): Partition
(27): Aperture with aperture function
(28): Go wall
(29): Top wall
(31): Bottom wall
(32): Connection part
(33): Refrigerant passing cylinder
(35): Extension
(36): 1st part
(37): Second part
(38): Section
(39): 1st entrance
(41): Filter
(42): 2nd communication port
(44): Plate
(45): Through hole
(P1): First heat exchange path
(P2): Second heat exchange path
(P3): Third heat exchange path
(P4): Fourth heat exchange path

Claims (8)

上下方向に間隔をおいて並列状に配置された左右方向にのびる複数の熱交換管と、熱交換管の左右両端部が接続された上下方向にのびるヘッダタンクとを備え、上下に連続して並んだ複数の熱交換管からなる熱交換パスが上下に並んで３以上設けられ、各熱交換パスを構成する全ての熱交換管の冷媒流れ方向が同一となっているとともに、隣り合う２つの熱交換パスの熱交換管の冷媒流れ方向が異なっているコンデンサであって、
左右いずれか一端部側に、下端の熱交換パスを含みかつ連続して並んだ少なくとも２つの熱交換パスを構成する第１の熱交換管が接続される第１ヘッダタンクと、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスよりも上方に設けられた熱交換パスを構成する第２の熱交換管が接続される第２ヘッダタンクとが設けられ、第１ヘッダタンクの全体が、第２ヘッダタンクよりも左右方向外側に配置されるとともに、第１ヘッダタンクに接続された第１熱交換管の第１ヘッダタンク側端部が、第２ヘッダタンクに接続された第２熱交換管の第２ヘッダタンク側端部よりも左右方向外方にのびており、第１ヘッダタンクの上端が第２ヘッダタンクの下端よりも上方に位置するとともに、第１ヘッダタンクの下端が第２ヘッダタンクの下端よりも下方に位置しており、第１ヘッダタンクにおける第２ヘッダタンクの下端よりも下方に突出した部分に第１熱交換管が接続され、第１ヘッダタンクが重力を利用して気液を分離しかつ液を溜める機能を有し、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスのうちの上端の熱交換パスと、第２ヘッダタンクに接続された第２熱交換管からなる熱交換パスとが、冷媒を凝縮させる冷媒凝縮パスであり、第１ヘッダタンクに接続された第１熱交換管からなる熱交換パスのうち上端の熱交換パスを除いた熱交換パスが、冷媒を過冷却する冷媒過冷却パスであり、第１ヘッダタンク内に、冷媒凝縮パスを構成する第１熱交換管から第１ヘッダタンク内への液相冷媒の流れを促進する分流制御手段が設けられており、分流制御手段が、第１ヘッダタンク内を、第１熱交換管からなる上端の熱交換パスである冷媒凝縮パスの第１熱交換管が通じる密閉状の冷媒流入空間と、残りの気液分離空間とに区画する仕切部を備えており、仕切部における冷媒流入空間に通じる第１熱交換管が配置されている上下方向の範囲の上下方向中央部よりも下方の部分に、絞り機能を有しかつ冷媒流入空間と気液分離空間とを通じさせる開口が形成されているコンデンサ。 A plurality of heat exchange pipes extending in the left-right direction and arranged in parallel at intervals in the vertical direction, and a header tank extending in the vertical direction to which both left and right ends of the heat exchange pipe are connected, Three or more heat exchange paths are arranged in the vertical direction, and the refrigerant flow directions of all the heat exchange pipes constituting each heat exchange path are the same, and two adjacent heat exchange paths are arranged adjacent to each other. A condenser in which the direction of refrigerant flow in the heat exchange pipe of the heat exchange path is different,
A first header tank to which a first heat exchange pipe constituting at least two heat exchange paths including a heat exchange path at the lower end and continuously arranged is connected to either one of the left and right ends; and a first header tank And a second header tank to which a second heat exchange pipe constituting a heat exchange path provided above the heat exchange path formed by the first heat exchange pipe connected to the first heat exchange pipe is connected. whole, along with being located in the left-right direction outer side of the second header tank, the first header tank side end portion of the first heat exchange tubes connected to the first header tank, which is connected to the second header tank The second heat exchange pipe extends outward in the left-right direction from the second header tank side end, the upper end of the first header tank is located above the lower end of the second header tank, and the lower end of the first header tank Of the second header tank Is located below the end, the first heat exchange tubes are connected to a portion projecting downward from the lower end of the second header tank of the first header tank, the gas-liquid is first header tank using gravity The heat exchange path at the upper end of the heat exchange path composed of the first heat exchange pipe connected to the first header tank and the second header tank connected to the second header tank The heat exchange path made of the heat exchange pipe is a refrigerant condensation path for condensing the refrigerant, and heat excluding the heat exchange path at the upper end of the heat exchange path made of the first heat exchange pipe connected to the first header tank. The exchange path is a refrigerant supercooling path for supercooling the refrigerant, and promotes the flow of the liquid-phase refrigerant from the first heat exchange pipe constituting the refrigerant condensation path into the first header tank in the first header tank. diversion control means is provided, diversion control A stage has a sealed refrigerant inflow space through which the first heat exchange pipe of the refrigerant condensing path, which is a heat exchange path at the upper end made of the first heat exchange pipe, passes through the first header tank, and the remaining gas-liquid separation space. And has a throttling function in a portion below the vertical central portion of the vertical range in which the first heat exchange pipe leading to the refrigerant inflow space in the partition is disposed, and A capacitor in which an opening is formed through the refrigerant inflow space and the gas-liquid separation space . 冷媒流入空間に、冷媒凝縮パスのすべての第１熱交換管が通じている請求項１記載のコンデンサ。 The capacitor according to claim 1, wherein all the first heat exchange pipes of the refrigerant condensing path communicate with the refrigerant inflow space . 絞り機能を有する開口の流路断面積が、冷媒流入空間に通じる全第１熱交換管の総流路断面積の７０％以下である請求項１または２記載のコンデンサ。 3. The capacitor according to claim 1, wherein a flow passage cross-sectional area of the opening having a throttling function is 70% or less of a total flow passage cross-sectional area of all the first heat exchange tubes leading to the refrigerant inflow space . 仕切部が、長さ方向を上下方向に向けるとともに通風方向の両側縁が第１ヘッダタンクの周壁内周面における管挿通穴よりも通風方向外側部分に接触し、かつ第１ヘッダタンクの周壁とともに冷媒流入空間の周囲を囲む囲繞壁と、囲繞壁の上下両端に設けられ、かつ冷媒流入空間の上下両端を閉鎖する頂壁および底壁とよりなり、囲繞壁に開口が形成されている請求項１〜３のうちのいずれかに記載のコンデンサ。 The partition portion has the length direction directed in the vertical direction, and both side edges in the ventilation direction are in contact with the outer portion in the ventilation direction than the pipe insertion hole in the inner peripheral surface of the first header tank, and together with the peripheral wall of the first header tank An enclosure wall comprising a surrounding wall of the refrigerant inflow space, a top wall and a bottom wall provided at both upper and lower ends of the enclosure wall and closing both upper and lower ends of the refrigerant inflow space, wherein an opening is formed in the enclosure wall. The capacitor | condenser in any one of 1-3 . 仕切部の囲繞壁の両側縁部どうしが連結部により連結されるとともに、囲繞壁と連結部とにより冷媒通過用筒状体が形成され、当該冷媒通過用筒状体に、冷媒流入空間の底壁よりも下方にのび、かつ第１ヘッダタンク内における冷媒凝縮パスの下方に隣接する冷媒過冷却パスの第１熱交換管が通じている部分に位置した延長部が設けられ、第１ヘッダタンクの周壁と冷媒通過用筒状体の間に、第１ヘッダタンク内を、冷媒凝縮パスの下方に隣接する冷媒過冷却パスの第１熱交換管が通じている第１部分と、第１部分よりも上方の第２部分とに仕切る区画部が設けられ、冷媒通過用筒状体の延長部に第１ヘッダタンク内の第１部分に開口した第１連通口が形成されるとともに、冷媒通過用筒状体における冷媒流入空間の底壁よりも上方の部分に第１ヘッダタンク内の第２部分に開口した第２連通口が形成され、第１および第２連通口のうち少なくともいずれか一方の連通口がフィルタにより塞がれている請求項４記載のコンデンサ。 Both side edge portions of the surrounding wall of the partition portion are connected by the connecting portion, and the surrounding wall and the connecting portion form a refrigerant passing cylindrical body, and the refrigerant passing cylindrical body is connected to the bottom of the refrigerant inflow space. An extension portion is provided which extends below the wall and is located in a portion where the first heat exchange pipe of the refrigerant subcooling path adjacent to the refrigerant condensing path in the first header tank communicates with the first header tank. A first portion in which the first heat exchange pipe of the refrigerant subcooling path adjacent to the lower side of the refrigerant condensing path passes through the first header tank between the peripheral wall of the refrigerant and the refrigerant passage cylindrical body; A partition portion that is partitioned into a second portion above the first portion, and a first communication port that is open to the first portion in the first header tank is formed in the extension portion of the refrigerant passage tubular body, and the refrigerant passage In the part above the bottom wall of the refrigerant inflow space in the cylinder 1 Header second communication port opened in the second portion of the tank is formed, the first and second communication port at least one of the communication port capacitor according to claim 4, characterized in that blocked by the filter of. 仕切部における冷媒流入空間の下端を閉鎖する底壁、および第１ヘッダタンクの周壁と冷媒通過用筒状体の間に設けられた区画部が、第１ヘッダタンクの周壁に接合された１つの板状体からなり、冷媒通過用筒状体の延長部が板状体に形成された貫通穴に通されるとともに、冷媒通過用筒状体の囲繞壁および連結部の下端が板状体の上面に接触させられ、板状体における冷媒通過用筒状体の囲繞壁よりも第１熱交換管側の部分が、仕切部の冷媒流入空間の下端を閉鎖する底壁となっている請求項５記載のコンデンサ。 A bottom wall that closes the lower end of the refrigerant inflow space in the partition, and a partition provided between the peripheral wall of the first header tank and the refrigerant passage cylindrical body are joined to the peripheral wall of the first header tank. It consists of a plate-like body, and the extension part of the refrigerant passage cylindrical body is passed through a through hole formed in the plate-like body, and the surrounding wall of the refrigerant passage cylindrical body and the lower end of the connecting portion are the plate-like body. The portion of the plate-like body that is closer to the first heat exchange pipe than the surrounding wall of the refrigerant passage tubular body is a bottom wall that closes the lower end of the refrigerant inflow space of the partition. 5. The capacitor according to 5 . 第１ヘッダタンクが、上端および下端のうち少なくともいずれか一端が開口した筒状本体と、当該筒状本体の開口端部に着脱自在に取り付けられた閉鎖部材とよりなる請求項１〜６のうちのいずれかに記載のコンデンサ。 The first header tank includes a cylindrical main body having at least one of an upper end and a lower end opened, and a closing member removably attached to an open end of the cylindrical main body. The capacitor according to any one of the above. 第１ヘッダタンクに少なくとも２つの熱交換パスを構成する第１熱交換管が接続され、第２ヘッダタンクに少なくとも１つの熱交換パスを構成する第２熱交換管が接続されている請求項１〜７のうちのいずれかに記載のコンデンサ。 The first heat exchange pipe constituting at least two heat exchange paths is connected to the first header tank, and the second heat exchange pipe constituting at least one heat exchange path is connected to the second header tank. The capacitor | condenser in any one of -7.
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