JP2007205836A - Airtightness testing method of heat exchanger having oil cooler built in radiator tank - Google Patents

Airtightness testing method of heat exchanger having oil cooler built in radiator tank Download PDF

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JP2007205836A
JP2007205836A JP2006024329A JP2006024329A JP2007205836A JP 2007205836 A JP2007205836 A JP 2007205836A JP 2006024329 A JP2006024329 A JP 2006024329A JP 2006024329 A JP2006024329 A JP 2006024329A JP 2007205836 A JP2007205836 A JP 2007205836A
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radiator
oil cooler
heat exchanger
tank
gas
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Shinichi Miyasaka
真一 宮坂
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Marelli Corp
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Calsonic Kansei Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an airtightness testing method of a heat exchanger having an oil cooler built in a radiator tank, which improves workability and tightness test accuracy of the oil cooler. <P>SOLUTION: The airtightness test of the oil cooler 2 is performed by a gas detecting means 9 communicated with a radiator 1 in the state where the heat exchanger A having the oil cooler 2 built in the tank of a radiator 1 is stored in a vacuum-suckable inspection chamber 5, the radiator 1 is evacuated, and helium gas is supplied into the oil cooler 2. Then, in the state where the inspection chamber 5 is evacuated and helium gas is supplied into the radiator 1, the airtightness test of the radiator 1 is performed by the gas detecting means 9 communicated with the inspection chamber 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法に関する。   The present invention relates to a hermetic test method for a heat exchanger in which an oil cooler is built in a radiator tank.

従来、ラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法としては、まず、オイルクーラ単体で気密試験を行った後、気密試験にパスしたオイルクーラをタンク内に組み付けた状態でラジエータの気密試験が行われていた。   Conventionally, as a method for hermetic testing of a heat exchanger with a built-in oil cooler in a radiator tank, first, after performing a hermetic test with a single oil cooler, an oil cooler that has passed the hermetic test is assembled in the tank. An airtight test was conducted.

ところが、オイルクーラとラジエータの気密試験が別工程で行われていたため、作業効率が悪く、多くの手間と時間を要するという問題があった。   However, since the oil cooler and the airtight test of the radiator were performed in separate steps, there was a problem that work efficiency was poor and much labor and time were required.

そこで、以上の問題点の解決策として、ラジエータタンク内にオイルクーラを組み付けた状態の熱交換器を真空吸引可能な検査室内に収容し、まず、検査室内及び熱交換器内を真空にした後、オイルクーラ内にヘリウムガスを供給した状態で検査室内に連通されたガスセンサによりオイルクーラの気密試験を行う、その後、検査室内を真空にした後、ラジエータ内に漏れ検査用のヘリウムガスを供給した状態で検査室内に連通されたガスセンサによりラジエータの気密試験を行うようにした気密試験方法が提案されている（例えば、特許文献１参照。）。この方法によれば、オイルクーラとラジエータの気密試験が同じ工程で行えるため、作業性を高めることができるようになるというメリットがある。
特公平７−１２１８号公報 Therefore, as a solution to the above problems, the heat exchanger with the oil cooler assembled in the radiator tank is housed in a test chamber that can be evacuated, and first, after the test chamber and the heat exchanger are evacuated. The air cooler is tested for airtightness using a gas sensor connected to the inspection chamber while helium gas is supplied to the oil cooler. After that, the inspection chamber is evacuated and then helium gas for leakage inspection is supplied to the radiator. There has been proposed an airtight test method in which an airtight test of a radiator is performed by a gas sensor communicated in an examination room in a state (see, for example, Patent Document 1). According to this method, since the airtight test of the oil cooler and the radiator can be performed in the same process, there is an advantage that workability can be improved.
Japanese Patent Publication No. 7-1218

しかしながら、従来例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法にあっては、オイルクーラから漏れたガスは、このオイルクーラが内蔵されたラジエータタンク内に流れだし、該ラジエータタンク内に充満したガスが検査室に流れ込んだ後にこの検査室内に連通されたガスセンサにより検知されるため、ガスを検知するまでに時間がかかると共に、ラジエータと検査室の合計容量が大きいため、ガス検知精度及びガス検知応答性が悪く、従って、オイルクーラの気密試験精度が悪くなるという問題点があった。   However, in the conventional airtight test method for a heat exchanger with an oil cooler built in the radiator tank, the gas leaked from the oil cooler flows into the radiator tank with the oil cooler built in, and the radiator Since the gas filled in the tank flows into the examination room and is detected by the gas sensor connected to the examination room, it takes time to detect the gas and the total capacity of the radiator and the examination room is large. There was a problem that the detection accuracy and gas detection responsiveness were poor, and therefore the oil-cooler airtightness test accuracy deteriorated.

本発明の解決しようとする課題は、作業性を高めることができると共に、オイルクーラの気密試験精度及びガス検知応答性を高めることができるラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法を提供することにある。   The problem to be solved by the present invention is that the workability can be improved and the airtightness test of the heat exchanger in which the oil cooler is built in the radiator tank that can improve the airtightness accuracy and gas detection response of the oil cooler. It is to provide a method.

上記課題を解決するため請求項１記載のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法は、ラジエータタンク内にオイルクーラを内蔵した熱交換器を真空吸引可能な検査室内に収容し、前記検査室及び前記ラジエータ内を真空にした後、前記オイルクーラ内に漏れ検査用ガスを供給した状態で前記ラジエータ内に連通されたガスセンサにより前記オイルクーラの気密試験を行い、その後、前記ラジエータ内に漏れ検査用ガスを供給した状態で前記検査室内に連通されたガスセンサにより前記ラジエータの気密試験を行うようにしたことを特徴とする手段とした。   In order to solve the above-mentioned problems, the airtight test method for a heat exchanger with an oil cooler built in a radiator tank according to claim 1 is to accommodate the heat exchanger with an oil cooler built in the radiator tank in a test chamber capable of vacuum suction. Then, after evacuating the inspection chamber and the radiator, an air tightness test of the oil cooler is performed by a gas sensor connected to the radiator in a state where a leakage inspection gas is supplied into the oil cooler, An airtight test of the radiator is performed by a gas sensor connected to the inspection chamber in a state where a leakage inspection gas is supplied into the radiator.

本発明のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法では、上述のように、ラジエータ内に連通されたガスセンサにより該ラジエータ内を検査室としてオイルクーラの気密試験を行うようにしたことで、熱交換器全体を収容する検査室に比べてラジエータ内の容量が小さいため、オイルクーラからのガスの漏れ量が少なくても迅速に検出することができるようになる。
従って、作業性を高めることができると共に、オイルクーラの気密試験精度を高めることができるようになるという効果が得られる。 In the air tightness test method for the heat exchanger with the oil cooler built in the radiator tank of the present invention, as described above, the gas sensor connected to the radiator is used to perform the air tightness test of the oil cooler with the inside of the radiator as an inspection chamber. As a result, since the capacity of the radiator is smaller than that of the inspection room that accommodates the entire heat exchanger, it is possible to detect quickly even if the amount of gas leakage from the oil cooler is small.
Therefore, it is possible to improve the workability and to improve the accuracy of the oil cooler airtightness test.

以下にこの発明の実施例を図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１はこの実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法が適用される熱交換器を示す正面図、図２は同斜視図、図３は同冷却媒体の流通経路構成を示す分解斜視図、図４は実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法を実施するための気密試験装置を示す回路図である。   FIG. 1 is a front view showing a heat exchanger to which an airtight test method for a heat exchanger having an oil cooler built in a radiator tank of this embodiment is applied, FIG. 2 is a perspective view thereof, and FIG. 3 is a flow of the cooling medium. FIG. 4 is an exploded perspective view showing a path configuration, and FIG. 4 is a circuit diagram showing an airtight test apparatus for carrying out an airtight test method for a heat exchanger in which an oil cooler is built in the radiator tank of the embodiment.

まず、この実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器Ａの気密試験方法が適用される熱交換器を図１、２に基づいて説明する。   First, a heat exchanger to which an airtight test method for a heat exchanger A in which an oil cooler is built in the radiator tank of this embodiment is applied will be described with reference to FIGS.

この熱交換器Ａは、ラジエータ１と、該ラジエータ１のタンク内に内蔵されたオイルクーラ２と、ラジエータ１の車両前面側に重ねられた状態で一体に組み付け配置されるコンデンサ３と、を備えている。   The heat exchanger A includes a radiator 1, an oil cooler 2 built in a tank of the radiator 1, and a condenser 3 that is assembled and arranged integrally with the radiator 1 on the vehicle front side. ing.

さらに詳述すると、上記ラジエータ１は、コア部１１と該コア部１１を挟んで車幅方向所定間隔をおいて対向配置される一対のタンク１２，１３で構成されている。
また、図２に示すように、一方のタンク１２の上部には車両後方側へ突出した入力ポートＰ１が設けられ、もう一方、タンク１３の下部には車両後方側へ突出した出力ポートＰ２が設けられている。 More specifically, the radiator 1 includes a core portion 11 and a pair of tanks 12 and 13 that are disposed to face each other at a predetermined interval in the vehicle width direction with the core portion 11 interposed therebetween.
As shown in FIG. 2, an input port P <b> 1 that protrudes toward the rear of the vehicle is provided at the upper portion of one tank 12, and an output port P <b> 2 that protrudes toward the rear of the vehicle is provided at the lower portion of the tank 13. It has been.

上記オイルクーラ２は、ラジエータ１のタンク１３内に内蔵され、該タンク１３を貫通して入力ポートＰ５と出力ポートＰ６が車両後方側へ突出した状態で設けられている。   The oil cooler 2 is built in the tank 13 of the radiator 1, and is provided in a state where the input port P5 and the output port P6 protrude through the tank 13 toward the vehicle rear side.

上記コンデンサ３は、コア部３１と該コア部３１を挟んで車幅方向に所定間隔をおいて対向配置される一対のタンク３２，３３とで構成されている。
そして、図１に示すように、タンク１２の内部は仕切り板１２ａによって２つの室Ｒ１，Ｒ４に仕切られ、一方、タンク１３の内部は仕切り板１３ａによって２つの室Ｒ２，Ｒ３に仕切られている。 The capacitor 3 includes a core portion 31 and a pair of tanks 32 and 33 that are arranged to face each other at a predetermined interval in the vehicle width direction with the core portion 31 interposed therebetween.
As shown in FIG. 1, the interior of the tank 12 is partitioned into two chambers R1, R4 by a partition plate 12a, while the interior of the tank 13 is partitioned into two chambers R2, R3 by a partition plate 13a. .

また、タンク３２の室Ｒ１に近接した側方には入出力ポートＰ３，Ｐ４が設けられる他、入力ポートＰ３は室Ｒ１に連通され、一方、出力ポートＰ４は、パイプ３４を介して室Ｒ４に連通されている。
また、タンク３３には室Ｒ３，Ｒ４に連通したレシーバ３５のパイプ３５ａ，３５ｂが接続されている。 In addition, input / output ports P3 and P4 are provided on the side of the tank 32 close to the chamber R1, and the input port P3 communicates with the chamber R1, while the output port P4 is connected to the chamber R4 via the pipe 34. It is communicated.
The tank 33 is connected to pipes 35a and 35b of a receiver 35 communicating with the chambers R3 and R4.

また、コア部３１は、一対のタンク３２，３３の間に挿通し固定された複数のチューブ３１ａと、隣接するチューブ３１ａ，３１ａ同士の間に配置されるフィン３１ｂとで構成されている。   Moreover, the core part 31 is comprised by the several tube 31a inserted and fixed between a pair of tanks 32 and 33, and the fin 31b arrange | positioned between adjacent tubes 31a and 31a.

そして、ラジエータ１のタンク１２，１３及びコンデンサ３のタンク３２，３３の上下端部には、レインフォース４ａ，４ｂが挿通し固定されることにより、これら両者が一体的に連結固定されている。   Reinforces 4a and 4b are inserted into and fixed to the upper and lower ends of the tanks 12 and 13 of the radiator 1 and the tanks 32 and 33 of the condenser 3, so that both of them are integrally connected and fixed.

次に、上記熱交換器Ａの気密試験装置を図４に基づいて説明する。
この気密試験装置は、熱交換器Ａを収容する検査室５と、該検査室５内、ラジエータ１内、オイルクーラ２内、及びコンデンサ３内をそれぞれ個別に真空吸引可能な真空吸引手段６と、ラジエータ１内、オイルクーラ２内、及びコンデンサ３内にそれぞれ個別にヘリウムガス（検査用ガス）を供給するガス供給手段７と、ヘリウムガスを排気するガス排気手段８と、漏れたヘリウムガスを検知することにより気密検査を行うガス検知手段９と、が備えられている。 Next, the airtight test apparatus for the heat exchanger A will be described with reference to FIG.
This air tightness test apparatus includes an inspection chamber 5 that accommodates the heat exchanger A, and vacuum suction means 6 that can individually vacuum-suck the inside of the inspection chamber 5, the radiator 1, the oil cooler 2, and the condenser 3. The gas supply means 7 for supplying helium gas (inspection gas) individually into the radiator 1, the oil cooler 2, and the condenser 3, the gas exhaust means 8 for exhausting the helium gas, and the leaked helium gas And gas detection means 9 for performing an airtight inspection by detecting.

上記真空吸引手段６は、検査室５内、ラジエータ１の入力ポートＰ１、オイルクーラ２の入力ポートＰ５、及びコンデンサ３の入力ポートＰ３に対しそれぞれバルブＶ１，Ｖ２，Ｖ３，Ｖ４を介して接続されている。   The vacuum suction means 6 is connected to the inspection chamber 5, the input port P1 of the radiator 1, the input port P5 of the oil cooler 2, and the input port P3 of the capacitor 3 via valves V1, V2, V3, and V4, respectively. ing.

上記ガス供給手段７は、ラジエータ１の出力ポートＰ２、オイルクーラ２の出力ポートＰ６、及びコンデンサ３の出力ポートＰ４に対しそれぞれバルブＶ５，Ｖ６，Ｖ７を介して接続されている。   The gas supply means 7 is connected to the output port P2 of the radiator 1, the output port P6 of the oil cooler 2, and the output port P4 of the capacitor 3 via valves V5, V6 and V7, respectively.

上記ガス排気手段８は、バルブＶ８，Ｖ９を介して検査室５内に接続され、バルブＶ８，Ｖ１０を介してラジエータ１の出力ポートＰ２に接続され、バルブＶ８，Ｖ１０、及びバルブＶ５，Ｖ６を介してオイルクーラ２の出力ポートＰ６に接続され、バルブＶ８，Ｖ１０，Ｖ５，Ｖ７を介してコンデンサ３の出力ポートＰ４に接続されている。   The gas exhaust means 8 is connected to the inside of the inspection chamber 5 through valves V8 and V9, is connected to the output port P2 of the radiator 1 through valves V8 and V10, and the valves V8 and V10 and the valves V5 and V6 are connected. To the output port P6 of the oil cooler 2 and to the output port P4 of the capacitor 3 through valves V8, V10, V5 and V7.

上記ガス検知手段９は、バルブＶ１１，Ｖ１０を介してラジエータ１の出力ポートＰ２に接続され、バルブＶ１１，Ｖ９を介して検査室５内に接続されている。   The gas detection means 9 is connected to the output port P2 of the radiator 1 through valves V11 and V10, and is connected to the inside of the examination room 5 through valves V11 and V9.

次に、上記気密試験装置による熱交換器Ａの気密検査方法を図４に基づいて説明する。なお、この説明において、開いたバルブ以外は閉じられているものとして説明を省略する。   Next, an airtight inspection method for the heat exchanger A using the airtight test apparatus will be described with reference to FIG. In this description, the description is omitted assuming that the valves other than the opened valve are closed.

まず、バルブＶ１〜Ｖ４を順次開いて真空吸引手段６により検査室５内を高真空にし、またラジエータ１、コンデンサ３、及びオイルクーラ２内を粗真空にした後、ラジエータ１、コンデンサ３、オイルクーラ２の順（容量の大きい順）に高真空にする。   First, the valves V1 to V4 are sequentially opened, the inside of the inspection chamber 5 is made high vacuum by the vacuum suction means 6, and the radiator 1, the condenser 3 and the oil cooler 2 are made rough vacuum, and then the radiator 1, condenser 3, oil A high vacuum is applied in the order of the cooler 2 (in descending order of capacity).

次に、バルブＶ７を開けてガス供給手段７からコンデンサ３内にヘリウムガスを供給した状態で、バルブＶ９，Ｖ１１を開けてガス検知手段９でコンデンサ３から検査室５内に漏れ出したヘリウムガスの検知を行うことにより、コンデンサ３の気密試験を行う。   Next, with the valve V7 opened and the helium gas supplied from the gas supply means 7 into the condenser 3, the valves V9 and V11 are opened and the helium gas leaked from the condenser 3 into the inspection chamber 5 by the gas detection means 9. The airtight test of the capacitor 3 is performed by detecting the above.

次に、バルブＶ６を開けてガス供給手段７からオイルクーラ２内にヘリウムガスを供給した状態で、バルブ１０，Ｖ１１を開けてガス検知手段９でオイルクーラ２からラジエータ１内に漏れ出したヘリウムガスの検知を行うことにより、オイルクーラ２の気密試験を行う。   Next, with the valve V6 opened and the helium gas supplied from the gas supply means 7 into the oil cooler 2, the valves 10 and V11 are opened and the helium leaked from the oil cooler 2 into the radiator 1 by the gas detection means 9. By performing gas detection, an airtight test of the oil cooler 2 is performed.

次に、バルブＶ５を開けてガス供給手段７からラジエータ１内にヘリウムガスを供給した状態で、バルブＶ９，Ｖ１１を開けてガス検知手段９でラジエータ１から検査室５内に漏れ出したヘリウムガスの検知を行うことにより、コンデンサ３の気密試験を行う。
なお、コンデンサ３またはオイルクーラ２のいずれかの気密検査で漏れを検知した場合は、その後の検査は行わない。 Next, with the valve V5 opened and the helium gas supplied from the gas supply means 7 into the radiator 1, the valves V9 and V11 are opened and the helium gas leaked from the radiator 1 into the inspection chamber 5 by the gas detection means 9. The airtight test of the capacitor 3 is performed by detecting the above.
In addition, when a leak is detected by the airtight inspection of either the capacitor 3 or the oil cooler 2, the subsequent inspection is not performed.

以上のようにしてコンデンサ３、オイルクーラ２、ラジエータ１の順で気密試験を行った後、バルブＶ５〜Ｖ８、Ｖ８を開けてガス排気手段８によりコンデンサ３、オイルクーラ２、及びラジエータ１内からヘリウムガスを抜き、これで熱交換器Ａの気密試験を終了する。なお、熱交換器Ａの不良で検査室５内にヘリウムガスが漏れた場合を想定し、通常バルブＶ９も開けてヘリウムガスを抜くようにしている。また、バルブＶ１１を開けてガス検知手段９に入ったヘリウムガスを抜くようにすることも行っている。   After performing the airtight test in the order of the condenser 3, the oil cooler 2 and the radiator 1 as described above, the valves V5 to V8 and V8 are opened, and the gas exhaust means 8 allows the condenser 3, the oil cooler 2 and the radiator 1 to be opened. The helium gas is removed, and the hermetic test of the heat exchanger A is completed. In addition, assuming that helium gas leaks into the inspection chamber 5 due to a defect in the heat exchanger A, the normal valve V9 is also opened to extract the helium gas. In addition, helium gas that has entered the gas detection means 9 is removed by opening the valve V11.

次に、この実施例の効果を説明する。
この実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法では、上述のように、ラジエータ１内に連通されたガス検知手段９により該ラジエータ１内を検査室としてオイルクーラ２の気密試験を行うようにしたことで、熱交換器Ａ全体を収容する検査室５に比べてラジエータ１内の容量が小さいため、オイルクーラ２からのヘリウムガスの漏れ量が少なくても迅速に検出してガス検知応答速度を速くし、これにより、径差時間を短縮することができるようになる。
従って、作業性を高めることができると共に、オイルクーラ２の気密試験精度を高めることができるようになるという効果が得られる。 Next, the effect of this embodiment will be described.
In the air tightness test method for the heat exchanger with the oil cooler built in the radiator tank of this embodiment, as described above, the oil cooler 2 with the inside of the radiator 1 as an inspection chamber by the gas detection means 9 communicated with the radiator 1 is used. Since the capacity of the radiator 1 is smaller than that of the inspection room 5 that accommodates the entire heat exchanger A, the leak test of the helium gas from the oil cooler 2 can be performed quickly. The gas detection response speed is increased by detection, and thereby the diameter difference time can be shortened.
Therefore, the workability can be improved, and the effect that the accuracy of the airtight test of the oil cooler 2 can be improved can be obtained.

また、オイルクーラ２の気密試験より前にラジエータ１の気密試験を行うと、オイルクーラ２の気密試験を行う前に、ラジエータ１の気密試験のために該ラジエータ１内に供給したヘリウムガスを完全に抜く作業が必要になるが、この実施例では、ラジエータ１の気密試験より前にオイルクーラ２の気密試験を行うようにしたことで、ラジエータ１内からヘリウムガスを抜く作業は必要なくなるため、ラジエータ１の気密試験を先に行う場合に比べ、作業性を高めることができるようになる。
ラジエータとコンデンサがフィンを共有するなどの構成で一体化されたいわゆる複合型熱交換器の場合で、オイルクーラがラジエータタンクに内蔵されている構成では、これらを一体に組み付けた状態で気密試験を行う必要がある。この場合、コンデンサの気密試験条件が一番厳しいので、オイルクーラ、ラジエータの気密試験に先立ってコンデンサの気密試験を行っている。 Further, if the airtight test of the radiator 1 is performed before the airtight test of the oil cooler 2, the helium gas supplied into the radiator 1 is completely used for the airtight test of the radiator 1 before the airtight test of the oil cooler 2. However, in this embodiment, since the hermetic test of the oil cooler 2 is performed before the hermetic test of the radiator 1, the work of extracting the helium gas from the radiator 1 is not necessary. Compared with the case where the airtight test of the radiator 1 is performed first, the workability can be improved.
In the case of a so-called combined heat exchanger in which the radiator and the condenser share fins, etc., and the oil cooler is built in the radiator tank, the airtight test is performed with these assembled together. There is a need to do. In this case, since the airtight test conditions of the capacitor are the strictest, the airtight test of the capacitor is performed prior to the airtight test of the oil cooler and the radiator.

以上本実施例を説明してきたが、本発明は上述の実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等があっても、本発明に含まれる。   Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.

例えば、実施例では、コンデンサ３が一体に組み付けられた熱交換器Ａを例にとって説明したが、コンデンサ３を備えないタイプの熱交換器であってもよい。   For example, in the embodiment, the heat exchanger A in which the condenser 3 is integrally assembled has been described as an example, but a heat exchanger that does not include the condenser 3 may be used.

また、実施例では、ガス検知手段９を検査室５の外部に備えた例を示したが、ラジエータ１内や検査室５内に備えるようにしてもよい。   In the embodiment, an example in which the gas detection means 9 is provided outside the examination room 5 has been described. However, the gas detection means 9 may be provided in the radiator 1 or the examination room 5.

また、実施例では、ヘリウムガスで気密検査を行うようにしたが、ラジエータ１内や検査室５内の圧力を検出し、この圧力変動に基づいて気密検査を行うようにすることが考えられる。   In the embodiment, the airtight inspection is performed with helium gas. However, it is conceivable to detect the pressure in the radiator 1 or the inspection chamber 5 and perform the airtight inspection based on the pressure fluctuation.

また、実施例では、全ての気密検査終了後にヘリウムガスを抜くようにしたが、各気密検査終了ごとにヘリウムガスを抜くようにしてもよい。   In the embodiment, the helium gas is extracted after completion of all the airtight inspections. However, the helium gas may be extracted at the end of each airtight inspection.

また、各手段間の配管構成該配管に配置される各バルブの配置や個数は任意であり、上述の各工程操作が可能であればよい。   Further, the piping configuration between the means The arrangement and number of the valves arranged in the piping are arbitrary, and it is only necessary to be able to perform the above-described process operations.

実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法が適用される熱交換器を示す正面図である。It is a front view which shows the heat exchanger with which the airtight test method of the heat exchanger which incorporated the oil cooler in the radiator tank of an Example is applied. 実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法が適用される熱交換器を示す斜視図である。It is a perspective view which shows the heat exchanger with which the airtight test method of the heat exchanger which incorporated the oil cooler in the radiator tank of an Example is applied. 実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器が適用される熱交換器の冷却媒体の流通経路構成を示す分解斜視図である。It is a disassembled perspective view which shows the flow path structure of the cooling medium of the heat exchanger with which the heat exchanger which incorporated the oil cooler in the radiator tank of an Example is applied. 実施例のラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法を実施するための気密試験装置を示す回路図である。It is a circuit diagram which shows the airtight test apparatus for implementing the airtight test method of the heat exchanger which incorporated the oil cooler in the radiator tank of an Example.

符号の説明Explanation of symbols

１ ラジエータ
１１ コア部
１２ タンク
１２ａ 仕切り板
１３ タンク
１３ａ 仕切り板
２ オイルクーラ
３ コンデンサ
３１ コア部
３１ａ チューブ
３１ｂ フィン
３２ タンク
３３ タンク
４ａ レインフォース
４ｂ レインフォース
５ 検査室
６ 真空吸引手段
７ ガス供給手段
８ ガス排気手段
９ ガス検知手段
Ｐ１ 入力ポート
Ｐ２ 出力ポート
Ｐ３ 入力ポート
Ｐ４ 出力ポート
Ｐ５ 入力ポート
Ｐ６ 出力ポート
Ｒ１〜Ｒ４ 室
Ｖ１〜Ｖ１１ バルブ DESCRIPTION OF SYMBOLS 1 Radiator 11 Core part 12 Tank 12a Partition plate 13 Tank 13a Partition plate 2 Oil cooler 3 Capacitor 31 Core part 31a Tube 31b Fin 32 Tank 33 Tank 4a Reinforce 4b Reinforce 5 Inspection room 6 Vacuum suction means 7 Gas supply means 8 Gas supply means 8 Exhaust means 9 Gas detection means P1 input port P2 output port P3 input port P4 output port P5 input port P6 output port R1-R4 chamber V1-V11 valve

Claims (1)

ラジエータタンク内にオイルクーラを内蔵した熱交換器を真空吸引可能な検査室内に収容し、前記検査室及び前記ラジエータ内を真空にした後、前記オイルクーラ内に漏れ検査用ガスを供給した状態で前記ラジエータ内に連通されたガスセンサにより前記オイルクーラの気密試験を行い、その後、前記ラジエータ内に漏れ検査用ガスを供給した状態で前記検査室内に連通されたガスセンサにより前記ラジエータの気密試験を行うようにしたことを特徴とするラジエータタンク内にオイルクーラを内蔵した熱交換器の気密試験方法。   A heat exchanger with a built-in oil cooler in a radiator tank is housed in a test chamber that can be evacuated, and after the test chamber and the radiator are evacuated, a leak test gas is supplied into the oil cooler. An airtight test of the oil cooler is performed by a gas sensor communicated with the radiator, and then an airtight test of the radiator is performed by a gas sensor communicated in the inspection chamber in a state in which a leakage inspection gas is supplied into the radiator. An airtight test method for a heat exchanger with an oil cooler built in a radiator tank.
JP2006024329A 2006-02-01 2006-02-01 Airtightness testing method of heat exchanger having oil cooler built in radiator tank Withdrawn JP2007205836A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900774A (en) * 2014-04-04 2014-07-02 浙江银轮机械股份有限公司 Oil cooler dry and wet mixed sealing performance test method and device
CN104048801A (en) * 2014-05-21 2014-09-17 广东法拉达汽车散热器有限公司 Visual detecting and pressure testing bench for intercoolers
CN109489907A (en) * 2018-12-07 2019-03-19 重庆东京散热器有限公司 The airtight detection sealing device of oil cooler grease chamber
CN110006597A (en) * 2019-04-23 2019-07-12 珠海格力智能装备有限公司 Condenser helium detection workstation
CN114354101A (en) * 2021-12-18 2022-04-15 上海马勒热***有限公司 Double-loop radiator leakage detection method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900774A (en) * 2014-04-04 2014-07-02 浙江银轮机械股份有限公司 Oil cooler dry and wet mixed sealing performance test method and device
CN104048801A (en) * 2014-05-21 2014-09-17 广东法拉达汽车散热器有限公司 Visual detecting and pressure testing bench for intercoolers
CN104048801B (en) * 2014-05-21 2017-01-04 广东法拉达汽车散热器有限公司 Charge air cooler visual detection pressure testing table
CN109489907A (en) * 2018-12-07 2019-03-19 重庆东京散热器有限公司 The airtight detection sealing device of oil cooler grease chamber
CN109489907B (en) * 2018-12-07 2023-11-07 重庆东京散热器有限公司 Oil chamber airtight detection sealing device for oil cooler
CN110006597A (en) * 2019-04-23 2019-07-12 珠海格力智能装备有限公司 Condenser helium detection workstation
CN110006597B (en) * 2019-04-23 2021-08-10 珠海格力智能装备有限公司 Condenser helium detection workstation
CN114354101A (en) * 2021-12-18 2022-04-15 上海马勒热***有限公司 Double-loop radiator leakage detection method

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