JP6227910B2 - Cold storage heat exchanger and manufacturing method thereof - Google Patents
Cold storage heat exchanger and manufacturing method thereof Download PDFInfo
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- JP6227910B2 JP6227910B2 JP2013134796A JP2013134796A JP6227910B2 JP 6227910 B2 JP6227910 B2 JP 6227910B2 JP 2013134796 A JP2013134796 A JP 2013134796A JP 2013134796 A JP2013134796 A JP 2013134796A JP 6227910 B2 JP6227910 B2 JP 6227910B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
本発明は、カーエアコンなどの冷凍サイクルにて蒸発器(エバポレータ)として使用でき、蓄冷材による蓄冷と放冷とが可能な蓄冷熱交換器及びその製造方法に関する。 The present invention relates to a cold storage heat exchanger that can be used as an evaporator (evaporator) in a refrigeration cycle such as a car air conditioner and that can store and cool by a cold storage material, and a method for manufacturing the same.
蓄冷熱交換器は、特許文献1などに示されるように、2つのタンク間において、2つのタンクと連通しつつ、扁平部を向い合せにして所定の間隔で並設される複数の扁平状冷媒管と、一部の隣り合う扁平状冷媒管の扁平部間の空隙に配置され蓄冷材が封入される蓄冷材容器と、を含んで構成される。 As shown in Patent Document 1 or the like, the cold storage heat exchanger is a plurality of flat refrigerants arranged in parallel at predetermined intervals with the flat portions facing each other between the two tanks while communicating with the two tanks. And a regenerator container that is disposed in a gap between flat portions of some adjacent flat refrigerant tubes and in which a regenerator material is enclosed.
蓄冷熱交換器は、通常は、カーエアコンなどの冷凍サイクルにて蒸発器として使用される。従って、エンジン駆動される圧縮機により凝縮器及び膨張弁を介して供給される冷媒が冷媒管内を流れ、ここで蒸発する。そして、隣り合う冷媒管の扁平部間にフィンが配置された空隙を流れる空気から蒸発熱を奪って、冷房用空気を冷却する。このとき同時に一部の隣り合う冷媒管の扁平部間に配置された蓄冷材容器内の蓄冷材を蓄冷する。その後、エンジンがアイドルストップなどで停止したときは、蓄冷材に蓄えた冷熱を利用して空気を冷却し、冷房能力を確保する。 The cold storage heat exchanger is usually used as an evaporator in a refrigeration cycle such as a car air conditioner. Therefore, the refrigerant supplied via the condenser and the expansion valve by the compressor driven by the engine flows through the refrigerant pipe and evaporates here. Then, the cooling air is cooled by removing evaporative heat from the air flowing through the gap where the fins are arranged between the flat portions of the adjacent refrigerant tubes. At this time, the cool storage material in the cool storage material container disposed between the flat portions of some adjacent refrigerant tubes is stored cold. Thereafter, when the engine is stopped due to idle stop or the like, the air is cooled by using the cold energy stored in the cold storage material to ensure the cooling capacity.
ところで、蓄冷熱交換器の製造過程において、蓄冷材容器は、組み立てられた状態で、一部の隣り合う冷媒管の扁平部間の空隙に挿入されてロウ付け接合がなされる。ロウ付け接合された蓄冷材容器では、蓄冷材を充填する充填口を介して行う気密性の検査や蓄冷材の充填、さらには、蓄冷材の充填後の充填口閉栓などを、生産効率の観点から、複数の蓄冷材容器に対して同時に行うことが好ましい。 By the way, in the manufacturing process of the cold storage heat exchanger, the cold storage material container is inserted into a gap between the flat portions of some adjacent refrigerant pipes in the assembled state to be brazed. From the viewpoint of production efficiency, the brazing-joined cool storage material container can be used for airtightness inspection, filling the cool storage material, and closing the filling port after filling the cool storage material. Therefore, it is preferable to carry out simultaneously for a plurality of cold storage material containers.
しかしながら、一部の隣り合う冷媒管の扁平部間の空隙には、挿入される蓄冷材容器に対して上下にクリアランスが存在するため、蓄冷材容器ごとに挿入状態がばらついて、蓄冷材容器が相互に位置ズレしたままロウ付け接合されることがある。 However, in the gap between the flat portions of some adjacent refrigerant pipes, there is a clearance above and below the cold storage material container to be inserted, so the insertion state varies for each cold storage material container, and the cold storage material container There are cases where brazing and joining are performed while the positions are shifted from each other.
このため、充填口は蓄冷材容器の所定位置に設けられているにもかかわらず、蓄冷熱交換器の全体では、充填口の位置が蓄冷材容器ごとに上下方向に異なるので、充填口が所定位置にあることを前提として、気密性の検査、蓄冷材の充填、及び充填口の閉栓などを複数の蓄冷材容器に対して同時に行うことが困難となり、生産効率を低下させてしまう。また、冷媒管の扁平部間にフィンのない隙間が発生し、この隙間へ、本来、フィンのある扁平部間の空隙などを通過するはずの空気が迂回してしまうことで蒸発熱が奪われにくくなるため、蓄冷熱交換器の冷房能力が低下するおそれがあった。 For this reason, although the filling port is provided at a predetermined position of the cool storage material container, the position of the filling port differs in the vertical direction for each cool storage material container in the entire regenerative heat exchanger. On the premise that it is in the position, it becomes difficult to simultaneously perform airtightness inspection, filling of the regenerator material, closing the filling port, etc. with respect to a plurality of regenerator containers, thereby reducing the production efficiency. In addition, a gap without fins is generated between the flat portions of the refrigerant pipe, and the heat that is supposed to pass through the gaps between the flat portions with fins is diverted into the gap, thereby evaporating heat. Since it became difficult, there existed a possibility that the air_conditioning | cooling capability of a cool storage heat exchanger might fall.
そこで、本発明はこのような問題点に鑑み、蓄冷材容器の位置ズレを抑制した蓄冷熱交換器及びその製造方法を提供することを目的とする。 Then, an object of this invention is to provide the cool storage heat exchanger which suppressed the position shift of the cool storage material container, and its manufacturing method in view of such a problem.
本発明に係る蓄冷熱交換器は、2つのタンク間において、前記2つのタンクと連通しつつ、扁平部を向かい合わせにして所定の間隔で並設される複数の扁平状冷媒管、及び、一部の隣り合う前記扁平状冷媒管の前記扁平部間の空隙に配置固定され蓄冷材が封入される複数の蓄冷材容器、を備えることを前提とする。 A cold storage heat exchanger according to the present invention includes a plurality of flat refrigerant pipes arranged in parallel at a predetermined interval with two flat tanks facing each other while communicating with the two tanks between two tanks. It is presupposed that a plurality of cold storage material containers are arranged and fixed in the gaps between the flat portions of the flat refrigerant pipes adjacent to each other and in which the cold storage material is enclosed.
前記複数の蓄冷材容器は、夫々、前記蓄冷材を封入する本体と、前記本体の所定位置から延びて前記空隙の外側へ突出し、前記蓄冷材の充填口をなす蓄冷材充填管と、を有する。前記蓄冷材充填管は、前記蓄冷材充填管の先端を前記本体に向けて切欠形成してなる一対の第1スリットを有するとともに、前記先端から前記本体に向けて延びる第2スリットを有し、前記一対の第1スリットは、前記複数の蓄冷材容器の間で、前記複数の扁平状冷媒管が並設される並設方向に重畳するように位置し、前記第2スリットは、前記先端における最下部を含む部分が切欠形成されてなる。 Each of the plurality of cold storage material containers includes a main body that encloses the cold storage material, and a cold storage material filling pipe that extends from a predetermined position of the main body and protrudes to the outside of the gap to form a filling port of the cold storage material. . The cold accumulating material packed tube, with the tip of the cold accumulating material packed tube to have a pair of first slits formed by notches formed toward the body, a second slit extending toward the main body from the front end The pair of first slits are located between the plurality of cold storage material containers so as to overlap in a juxtaposed direction in which the plurality of flat refrigerant tubes are juxtaposed , and the second slit is the tip A portion including the lowermost portion is cut out .
また、本発明に係る蓄冷熱交換器の製造方法は、2つのタンク間において、前記2つのタンクと連通しつつ、扁平部を向かい合わせにして所定の間隔で並設される複数の扁平状冷媒管のうち、一部の隣り合う前記扁平状冷媒管の前記扁平部間の空隙に、蓄冷材が封入される複数の蓄冷材容器を配置固定することを前提とする。 Moreover, the manufacturing method of the cool storage heat exchanger which concerns on this invention is the some flat refrigerant | coolant arranged in parallel at predetermined intervals with a flat part facing each other between two tanks between two tanks. It is assumed that a plurality of cold storage material containers in which a cold storage material is sealed are arranged and fixed in a space between the flat portions of some of the flat refrigerant tubes adjacent to each other.
前記蓄冷材を封入する本体と、前記本体の所定位置から延びて前記空隙の外側へ突出し、前記蓄冷材の充填口をなす蓄冷材充填管と、を有し、前記蓄冷材充填管が、前記蓄冷材充填管の先端から前記本体に向けて切欠形成してなる一対のスリットを有し、前記一対のスリットが、前記空隙に前記蓄冷材容器を挿入したときに前記複数の扁平状冷媒管を並設する並設方向に並ぶように位置する前記蓄冷材容器は、前記空隙に挿入された状態において、前記複数の蓄冷材容器の間で、前記一対のスリットが前記並設方向に重畳するように位置決めされた後、固定される。 A main body that encloses the cold storage material, and a cold storage material filling pipe that extends from a predetermined position of the main body and protrudes outside the gap and forms a filling port of the cold storage material. A pair of slits formed by cutting out from the front end of the regenerator filling tube toward the main body, and the pair of slits, when the regenerator container is inserted into the gap, the plurality of flat refrigerant tubes The cold storage material containers positioned so as to line up in the juxtaposed direction are arranged so that the pair of slits overlap in the juxtaposition direction between the plurality of cold storage material containers when inserted in the gap. After being positioned, it is fixed.
本発明の蓄冷熱交換器及びその製造方法によれば、蓄冷材容器の位置ズレを抑制することができる。 According to the cold storage heat exchanger and the manufacturing method thereof of the present invention, it is possible to suppress the displacement of the cold storage material container.
以下、添付された図面を参照し、本発明を実施するための実施形態について詳述する。
図1は、蓄冷材容器を有する蓄冷熱交換器(蓄冷エバポレータ)の一例を示す。
Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an example of a cold storage heat exchanger (cold storage evaporator) having a cold storage material container.
蓄冷熱交換器10は、上側ヘッダタンク12と、下側ヘッダタンク14と、上側ヘッダタンク12と下側ヘッダタンク14とを連通する複数の冷媒管16と、隣り合う冷媒管16、16間の空隙に配置されるフィン18と、一部の空隙にフィン18に代えて配置される複数の蓄冷材容器20と、両側のサイドプレート22と、を含んでなる。 The regenerative heat exchanger 10 includes an upper header tank 12, a lower header tank 14, a plurality of refrigerant pipes 16 communicating the upper header tank 12 and the lower header tank 14, and adjacent refrigerant pipes 16, 16. The fin 18 arrange | positioned in a space | gap, the some cool storage material container 20 arrange | positioned instead of the fin 18 in a part of space | gap, and the side plate 22 of both sides are comprised.
上側ヘッダタンク12は、水平方向に延在し、また延在方向と直交する前後方向に2つのタンク、すなわち、蓄冷熱交換器10に対して流入する空気の上流側を前側、下流側を後側とすると、前側の上側前タンク12aと後側の上側後タンク12bとに分割されている。ここで、上側後ヘッダタンク12bの一端部に冷媒入口24が形成され、これと隣り合う上側前ヘッダタンク12aの一端部に冷媒出口26が形成されている。 The upper header tank 12 extends in the horizontal direction and has two tanks in the front-rear direction orthogonal to the extending direction, that is, the upstream side of the air flowing into the cold storage heat exchanger 10 is the front side, and the downstream side is the rear side. As a side, it is divided into a front upper front tank 12a and a rear upper rear tank 12b. Here, a refrigerant inlet 24 is formed at one end of the upper rear header tank 12b, and a refrigerant outlet 26 is formed at one end of the upper front header tank 12a adjacent thereto.
下側ヘッダタンク14は、上側ヘッダタンク12の下方に、上側ヘッダタンク12と同様、水平方向に延在し、また、延在方向と直交する前後方向に2つのタンク、すなわち、上側前ヘッダタンク12a及び上側後ヘッダタンク12bと同様に、下側前タンク14aと下側後タンク14bとに分割されている。 The lower header tank 14 extends in the horizontal direction below the upper header tank 12 in the same manner as the upper header tank 12 and has two tanks in the front-rear direction orthogonal to the extending direction, that is, the upper front header tank. Similarly to 12a and upper rear header tank 12b, it is divided into lower front tank 14a and lower rear tank 14b.
冷媒管16は、扁平状であり、扁平部を向かい合せにして所定の間隔で並設される。そして、冷媒管16は、ここでは、前後2列に配置され、前側の1列目は上側前ヘッダタンク12aと下側前ヘッダタンク14aとを連通し、後側の2列目は上側後ヘッダタンク12bと下側後ヘッダタンク14bとを連通する。また、前記並設方向で隣り合う冷媒管16、16の扁平部間には、冷媒管16、16の冷媒と熱交換する空気が通る空隙が形成される。この空隙の上下方向の範囲は、上側が上側タンク12により画され、下側が下側タンク14により画される。 The refrigerant pipe 16 has a flat shape, and is arranged in parallel at a predetermined interval with the flat portions facing each other. The refrigerant pipes 16 are here arranged in two front and rear rows, the front first row communicates the upper front header tank 12a and the lower front header tank 14a, and the rear second row is the upper rear header. The tank 12b communicates with the lower rear header tank 14b. In addition, a gap is formed between the flat portions of the refrigerant pipes 16 and 16 that are adjacent to each other in the juxtaposed direction and through which the air that exchanges heat with the refrigerant in the refrigerant pipes 16 and 16 passes. The upper and lower ranges of the gap are defined by the upper tank 12 on the upper side and the lower tank 14 on the lower side.
フィン18は、コルゲートフィンであり、前記空隙、すなわち、隣り合う冷媒管16、16の扁平部間に、熱交換効率向上のために配置される。 The fins 18 are corrugated fins, and are arranged for improving heat exchange efficiency between the gaps, that is, between the flat portions of the adjacent refrigerant tubes 16 and 16.
蓄冷材容器20は、蓄冷材を封入した扁平な容器であり、一部の隣り合う冷媒管16、16の扁平部間の空隙に、フィン18に代えて配置される。例えば、4つの空隙ごとに、そのうち3つにフィン18が配置され、残りの1つに蓄冷材容器20が配置される。蓄冷材容器20は、蓄冷材を封入する本体20aと、本体20aの所定位置から延びて空隙の外側(蓄冷熱交換器10の前側)に突出し、本体20aに対する蓄冷材の充填口をなす蓄冷材充填管20bと、を有する。 The cool storage material container 20 is a flat container filled with a cool storage material, and is disposed in place of the fins 18 in the gap between the flat portions of some adjacent refrigerant pipes 16 and 16. For example, for each of the four gaps, fins 18 are arranged in three of them, and the cold storage material container 20 is arranged in the remaining one. The cool storage material container 20 includes a main body 20a that encloses the cool storage material, a cool storage material that extends from a predetermined position of the main body 20a, protrudes to the outside of the air gap (the front side of the cool storage heat exchanger 10), and forms a charging port for the cool storage material to the main body 20a. And a filling tube 20b.
本実施形態では、冷媒管16は、前側の列と後側の列とに分けられる他、前側の列は更に2つの群に分けられ、後側の列も更に2つの群に分けられる。従って、熱交換器全体では、図2の概略図に示されるように、冷媒流通方向に沿って後側の第1、第2パス(P1、P2)と、前側の第3、第4パス(P3、P4)とに分けられる。 In the present embodiment, the refrigerant pipe 16 is divided into a front row and a rear row, the front row is further divided into two groups, and the rear row is further divided into two groups. Therefore, in the entire heat exchanger, as shown in the schematic diagram of FIG. 2, the first and second passes (P1, P2) on the rear side and the third and fourth passes on the front side (P P3 and P4).
このような第1〜第4パス(P1〜P4)を実現するため、上側ヘッダタンク12(12a、12b)及び下側ヘッダタンク14(14a、14b)は次のように区画されている。 In order to realize such first to fourth paths (P1 to P4), the upper header tank 12 (12a, 12b) and the lower header tank 14 (14a, 14b) are partitioned as follows.
図2に示されるように、上側前ヘッダタンク12aと上側後ヘッダタンク12bとは互いに前後方向図示右側部分が仕切り28により仕切られているが、同左側部分の連通部30にて連通している。そして、上側前ヘッダタンク12a及び上側後ヘッダタンク12bには、夫々、前後方向中央部に仕切り32が設けられている。
一方、下側前ヘッダタンク14aと下側後ヘッダタンク14bとは互いに仕切り34により仕切られて非連通となっている。
As shown in FIG. 2, the upper front header tank 12a and the upper rear header tank 12b are separated from each other by a partition 28 on the right side in the front-rear direction, but communicate with each other through the communication portion 30 on the left side. . The upper front header tank 12a and the upper rear header tank 12b are each provided with a partition 32 at the center in the front-rear direction.
On the other hand, the lower front header tank 14a and the lower rear header tank 14b are separated from each other by a partition 34 and are not in communication.
このような4パス方式では、冷媒は、エンジン駆動される圧縮機により凝縮器及び膨張弁を介して供給されて、冷媒入口24より上側後ヘッダタンク12bに流入し、仕切り32手前の前後方向図示右側半分から第1パスP1の冷媒管16群を下向きに流れて、下側後ヘッダタンク14bに至る。そして、下側後ヘッダタンク14bの同左側半分から第2パスP2の冷媒管16群を上向きに流れ、上側後ヘッダタンク12bに至り、上側後ヘッダタンク12bから連通部30を経て上側前ヘッダタンク12aに至る。 In such a 4-pass system, the refrigerant is supplied by an engine-driven compressor via a condenser and an expansion valve, flows into the upper rear header tank 12b from the refrigerant inlet 24, and is illustrated in the front-rear direction before the partition 32. From the right half, it flows downward through the refrigerant pipe 16 group of the first path P1 and reaches the lower rear header tank 14b. Then, the refrigerant pipe 16 group in the second path P2 flows upward from the left half of the lower rear header tank 14b, reaches the upper rear header tank 12b, and passes from the upper rear header tank 12b to the upper front header tank via the communication portion 30. 12a.
そして、上側前ヘッダタンク12aの同左側部分から第3パスP3の冷媒管16群を下向きに流れて、下側前ヘッダタンク14aに至る。そして、下側前ヘッダタンク14aの同右側部分から第4パスP4の冷媒管16群を上向きに流れ、上側前ヘッダタンク12aに至り、冷媒出口26から流出する。 Then, the refrigerant flows from the left side portion of the upper front header tank 12a through the refrigerant pipe 16 group of the third path P3 downward and reaches the lower front header tank 14a. Then, the refrigerant flows from the right front portion of the lower front header tank 14a through the refrigerant pipe 16 group in the fourth path P4, reaches the upper front header tank 12a, and flows out from the refrigerant outlet 26.
ここで、冷媒が冷媒管16内を流れるときに、フィン18を介し、空隙を通過する空気を冷却する。また、このとき同時に、一部の隣り合う冷媒管16、16の扁平部間に配置された蓄冷材容器20内の蓄冷材に蓄冷する。その後、エンジンがアイドルストップなどで停止して圧縮機が停止したときは、蓄冷材容器20内の蓄冷材に蓄えた冷熱を利用して空気を冷却し、冷房能力を確保する。 Here, when the refrigerant flows through the refrigerant pipe 16, the air passing through the gap is cooled through the fins 18. At the same time, cold storage is performed on the cold storage material in the cold storage material container 20 disposed between the flat portions of some of the adjacent refrigerant pipes 16 and 16. Thereafter, when the engine is stopped due to an idle stop or the like and the compressor is stopped, the air is cooled using the cold energy stored in the cold storage material in the cold storage material container 20 to ensure the cooling capacity.
図3及び図4は、蓄冷材容器20の詳細構造を示す。なお、以下では、蓄冷材容器20が配置される隣り合う冷媒管16、16のうち、一方の冷媒管16を「16L」、他方の冷媒管16を「16R」と呼称する。 3 and 4 show the detailed structure of the cold storage material container 20. Hereinafter, of the adjacent refrigerant tubes 16 and 16 in which the cool storage material container 20 is disposed, one refrigerant tube 16 is referred to as “16L” and the other refrigerant tube 16 is referred to as “16R”.
蓄冷材容器20は、一方の冷媒管16L側の第1側板36と、他方の冷媒管16R側の第2側板38と、蓄冷材の充填口となる充填口部材40と、を有してなる。 The cold storage material container 20 includes a first side plate 36 on the side of one refrigerant pipe 16L, a second side plate 38 on the side of the other refrigerant pipe 16R, and a filling port member 40 serving as a charging port for the cold storage material. .
第1側板36及び第2側板38はそれぞれ外周部に枠状のフランジ部を有し、フランジ部同士がロウ付け接合(固定)されることで、第1側板36と第2側板38との間に蓄冷材を封入する本体20aが形成される。また、第1側板36及び第2側板38の一部には、蓄冷材充填管20bの基部をなす充填管部36b、38bが形成され、先端において充填口部材40を充填管部36bと38bとの間に挟み込んだ状態で、第1側板36、第2側板38及び充填口部材40をロウ付け接合することにより、蓄冷材充填管20bが形成される。 Each of the first side plate 36 and the second side plate 38 has a frame-like flange portion on the outer peripheral portion, and the flange portions are joined to each other by brazing (fixing), whereby the first side plate 36 and the second side plate 38 are interposed. The main body 20a which encloses the cold storage material is formed. Moreover, filling pipe parts 36b and 38b which form the base of the regenerator material filling pipe 20b are formed in a part of the first side plate 36 and the second side plate 38, and the filling port member 40 is filled with the filling pipe parts 36b and 38b at the tip. The cold storage material filling pipe 20b is formed by brazing and joining the first side plate 36, the second side plate 38, and the filling port member 40 in a state of being sandwiched between them.
第1側板36は、第1平坦面36aを有し、第1平坦面36aにて一方の冷媒管16Lとロウ付け接合される。 The first side plate 36 has a first flat surface 36a, and is brazed to the one refrigerant pipe 16L at the first flat surface 36a.
第2側板38は、第2平坦面38aを有し、第2平坦面38aから外側に突出する截頭円錐状の凸部38cを複数有し、凸部38cの頂壁にて他方の冷媒管16Rとロウ付け接合される。第2側板38の第2平坦面38aと他方の冷媒管16Rとの間には、凸部38cの高さの分、空気通路42が形成される。 The second side plate 38 has a second flat surface 38a, a plurality of frustoconical convex portions 38c protruding outward from the second flat surface 38a, and the other refrigerant pipe at the top wall of the convex portion 38c. 16R and brazed. An air passage 42 is formed between the second flat surface 38a of the second side plate 38 and the other refrigerant pipe 16R by the height of the convex portion 38c.
蓄冷材容器20は、第1側板36と第2側板38との間に配置されるコルゲートタイプのインナーフィン44を更に有している。インナーフィン44は、蓄冷材容器20内に収容され、第1側板36の第1平坦面36aと第2側板38の第2平坦面38aとにロウ付け接合される。 The cool storage material container 20 further includes a corrugated inner fin 44 disposed between the first side plate 36 and the second side plate 38. The inner fin 44 is accommodated in the cool storage material container 20 and brazed to the first flat surface 36 a of the first side plate 36 and the second flat surface 38 a of the second side plate 38.
図5は、蓄冷材充填管20bの詳細構造を示す。
蓄冷材充填管20bは、例えば、円管として構成され、充填管部36b,38bで形成される小径部と、充填口部材40の大径部と、が連通接続してなる。また、蓄冷材充填管20bは、その先端20cを本体20aに向けて切欠形成してなる4つのスリット、すなわち、一対の第1スリット46a,46b、第2スリット48、及び第3スリット50を有する。
FIG. 5 shows a detailed structure of the cold storage material filling pipe 20b.
The regenerator material filling pipe 20b is configured, for example, as a circular pipe, and a small diameter part formed by the filling pipe parts 36b and 38b and a large diameter part of the filling port member 40 are connected in communication. Further, the regenerator material filling tube 20b has four slits formed by notching the tip 20c thereof toward the main body 20a, that is, a pair of first slits 46a and 46b, a second slit 48, and a third slit 50. .
蓄冷材充填管20bには、蓄冷材充填管20bの先端20cにおける開口(充填口)を閉栓する蓋部材としてのフランジ付プラグ52が嵌入される。また、蓄冷材充填管20bのうち、充填管部材40の内周には、フランジ付プラグ52のフランジが当接するように、蓄冷材充填管20bの延びる方向で段差20dが設けられている。フランジ付プラグ52の外周には、蓄冷材容器20の内外間におけるシール性を向上するために、蓄冷材充填管20bの内周と接触する弾性体としてのOリング54が取り付けられている。 The cold storage material filling pipe 20b is fitted with a flanged plug 52 as a lid member for closing the opening (filling port) at the tip 20c of the cold storage material filling pipe 20b. Further, a step 20d is provided on the inner circumference of the refrigerating material filling tube 20b in the extending direction of the regenerator filling tube 20b so that the flange of the flanged plug 52 abuts on the inner periphery of the filling tube member 40. On the outer periphery of the flanged plug 52, an O-ring 54 is attached as an elastic body that comes into contact with the inner periphery of the cold storage material filling pipe 20 b in order to improve the sealing performance between the inside and outside of the cold storage material container 20.
まず、一対の第1スリット46a,46bについて説明する。
一対の第1スリット46a,46bは、隣り合う冷媒管16L、16R間の扁平部間の空隙に蓄冷材容器20を挿入した状態において、複数の冷媒管16が並設される並設方向に直線状に並ぶように位置する。換言すると、一対の第1スリット46a,46bは、空隙に蓄冷材容器20を挿入した状態において、上側ヘッダタンク12又は下側ヘッダタンク14の延在方向に並ぶように位置する。
First, the pair of first slits 46a and 46b will be described.
The pair of first slits 46a and 46b are straight in the juxtaposed direction in which the plurality of refrigerant tubes 16 are arranged in parallel in a state where the cold storage material container 20 is inserted into the gap between the flat portions between the adjacent refrigerant tubes 16L and 16R. It is located in a line. In other words, the pair of first slits 46 a and 46 b are positioned so as to be aligned in the extending direction of the upper header tank 12 or the lower header tank 14 in a state where the cold storage material container 20 is inserted into the gap.
ここで、一対の第1スリット46a,46bの機能を説明するために、蓄冷熱交換器10の製造過程の一部について述べる。
インナーフィン44を内挿して第1側板36、第2側板38、及び充填口部材40を組み立てた組立状態の蓄冷材容器20は、蓄冷材容器20を除く、上側ヘッダタンク12、下側ヘッダタンク14、冷媒管16、及びフィン18などを組み立てた組立状態の蓄冷熱交換器20のうち、隣り合う冷媒管16L、16R間の扁平部間の空隙に挿入され、その後、所定条件の下でロウ付け接合(固定)される。
Here, in order to explain the function of the pair of first slits 46a and 46b, a part of the manufacturing process of the cold storage heat exchanger 10 will be described.
The regenerator container 20 in the assembled state in which the inner fins 44 are inserted to assemble the first side plate 36, the second side plate 38, and the filling port member 40 includes the upper header tank 12 and the lower header tank excluding the regenerator container 20. 14, the refrigerant pipe 16, the fins 18, and the like are assembled and inserted into the gap between the flat portions between the adjacent refrigerant pipes 16 </ b> L and 16 </ b> R. Bonded (fixed).
ロウ付け接合の前に組立状態の蓄冷材容器20を扁平部間の空隙に挿入する工程について詳述すると、組立状態の蓄冷熱交換器10のうち、蓄冷材容器20が挿入される側の反対側、すなわち後側において、蓄冷材容器20が挿入される各空隙の開口を少なくとも一部塞ぐように、所与の平板(図示省略)を冷媒管16L、16Rの端部に当接させる。例えば、組立状態の蓄冷熱交換器10の後面と平板とが接するように、組立状態の蓄冷熱交換器10を平板上に載置してもよい。 The step of inserting the assembled cool storage material container 20 into the gap between the flat portions before brazing will be described in detail. Of the cool storage heat exchanger 10 in the assembled state, the opposite side to the side where the cool storage material container 20 is inserted. On the side, that is, the rear side, a given flat plate (not shown) is brought into contact with the end portions of the refrigerant pipes 16L and 16R so as to at least partially block the opening of each gap into which the cool storage material container 20 is inserted. For example, the assembled cold storage heat exchanger 10 may be placed on a flat plate such that the rear surface of the cold storage heat exchanger 10 in the assembled state is in contact with the flat plate.
蓄冷材容器20が挿入される側の反対側において、蓄冷材容器20が挿入される各空隙の開口を少なくとも一部、平板で塞ぐことにより、組立状態の蓄冷材容器20を各空隙に挿入したときに、蓄冷材容器20の端部が平板に突き当たるようにし、空隙から突出する蓄冷材充填管20bの突出量を各蓄冷材容器20の間で一致させるようにしている。すなわち、蓄冷熱交換器10の前後方向における蓄冷材充填管20bの位置を、複数の蓄冷材容器20間で一致させるようにしている。 On the opposite side of the side where the cold storage material container 20 is inserted, the opening of each gap into which the cold storage material container 20 is inserted is at least partially blocked with a flat plate, thereby inserting the assembled cold storage material container 20 into each gap. In some cases, the end of the regenerator material container 20 abuts against the flat plate, and the protruding amount of the regenerator material filling pipe 20b protruding from the gap is made to coincide between the regenerator material containers 20. That is, the position of the regenerator material filling pipe 20 b in the front-rear direction of the regenerator heat exchanger 10 is made to coincide between the plurality of regenerator containers 20.
しかし、隣り合う冷媒管16L、16Rの扁平部間の空隙において、挿入される蓄冷材容器20に対して、特に、上側ヘッダタンク12及び下側ヘッダタンク14の2つのタンクとの間にクリアランスが設けられている場合、単に、蓄冷材容器20を空隙に挿入しただけでは、図6(a)に示すように、各蓄冷材容器20は、互いに、下側ヘッダタンク14(あるいは上側ヘッダタンク12)に対して、位置ズレを起こす可能性がある。 However, in the gap between the flat portions of the adjacent refrigerant pipes 16L and 16R, there is a clearance particularly between the two tanks, the upper header tank 12 and the lower header tank 14, with respect to the cold storage material container 20 to be inserted. If provided, simply inserting the regenerator material container 20 into the gap allows the regenerator material containers 20 to be connected to the lower header tank 14 (or the upper header tank 12) as shown in FIG. ) May cause a misalignment.
図6(a)に示すように、各蓄冷材容器20が、互いに、下側ヘッダタンク14(あるいは上側ヘッダタンク12)に対して、位置ズレを起したままロウ付け接合されると、蓄冷材充填口20bは蓄冷材容器20の所定位置に設けられているにもかかわらず、蓄冷熱交換器10の全体では、蓄冷材充填管20bの上下方向の位置が蓄冷材容器20ごとに異なって定まりにくくなる。このため、蓄冷材充填管20bが所定の位置にあることを前提として、気密性の検査、蓄冷材の充填、及び充填口の閉栓などを、複数の蓄冷材容器20に対して同時に行うことが困難となり、生産効率を低下させてしまう。 As shown in FIG. 6 (a), when the regenerator containers 20 are brazed and joined to the lower header tank 14 (or the upper header tank 12) while being displaced, Although the filling port 20b is provided at a predetermined position of the regenerator material container 20, in the entire regenerator heat exchanger 10, the vertical position of the regenerator material filling pipe 20b is determined differently for each regenerator material container 20. It becomes difficult. For this reason, on the premise that the regenerator material filling pipe 20b is in a predetermined position, the airtightness inspection, the regenerator material filling, the filling port closing, and the like can be simultaneously performed on the plural regenerator material containers 20. It becomes difficult and decreases production efficiency.
また、隣り合う冷媒管16L、16Rの扁平部間にフィン18のない隙間(図中の斜線部C)が発生し、この隙間へ、本来、フィン18のある扁平部間の空隙などを通過するはずの空気が迂回してしまうことで蒸発熱が奪われにくくなるため、蓄冷熱交換器10の冷房能力が低下するおそれがある。 Further, a gap without the fin 18 (shaded portion C in the figure) is generated between the flat portions of the adjacent refrigerant pipes 16L and 16R, and the gap between the flat portions with the fins 18 originally passes through this gap. Since the evaporating heat is less likely to be taken away due to the detoured air being detoured, the cooling capacity of the cold storage heat exchanger 10 may be reduced.
そこで、ロウ付け接合の前に、蓄冷熱交換器10の前後方向における前述の蓄冷材充填管20bの位置決めに併せて、図6(b)に示すように、隣り合う冷媒管16L、16Rの扁平部間の空隙に挿入された蓄冷材容器20に対し、複数の蓄冷材容器20の間で、一対の第1スリット46a,46bが、下側ヘッダタンク14(あるいは上側ヘッダタンク12)に対して蓄冷熱交換器10の上下方向で予め定めた所定距離だけ離間しつつ、複数の冷媒管16が並設される並設方向に重畳するように位置決めを行う。 Therefore, before brazing and joining, as shown in FIG. 6 (b), the flatness of the adjacent refrigerant tubes 16L and 16R is combined with the positioning of the cold storage material filling tube 20b in the longitudinal direction of the cold storage heat exchanger 10. A pair of first slits 46a and 46b are provided between the cool storage material containers 20 inserted into the gaps between the parts and between the plurality of cool storage material containers 20 with respect to the lower header tank 14 (or the upper header tank 12). Positioning is performed so as to overlap with the juxtaposed direction in which the plurality of refrigerant tubes 16 are juxtaposed while being separated by a predetermined distance in the vertical direction of the cold storage heat exchanger 10.
蓄冷熱交換器10の上下方向における蓄冷材容器20の位置決めは、具体的に、隣り合う冷媒管16L、16Rの扁平部間の空隙に蓄冷材容器20を挿入した状態において、最も離れた2つの蓄冷材容器20の間の距離以上の長さを備え、一対の第1スリット46a,46bに嵌合可能な外形を有する嵌合体に対して、各蓄冷材容器20の蓄冷材充填管20bにおける第1スリット46a,46bが嵌合するように、各蓄冷材容器20を上側ヘッダタンク12と下側ヘッダタンク14との間で移動させて行う。 Specifically, the positioning of the regenerator container 20 in the vertical direction of the regenerator heat exchanger 10 is specifically determined in the state in which the regenerator container 20 is inserted into the gap between the flat portions of the adjacent refrigerant pipes 16L and 16R, With respect to a fitting body having a length equal to or longer than the distance between the regenerator containers 20 and having an outer shape that can be fitted into the pair of first slits 46a and 46b, the regenerator material filling pipe 20b of each regenerator container 20 has a first shape. Each cold storage material container 20 is moved between the upper header tank 12 and the lower header tank 14 so that the 1 slits 46a and 46b are fitted.
蓄冷材容器20の位置決めが終了した後にロウ付け接合を行うことにより、ロウ付け接合後の蓄冷材充填管20bにおける一対の第1スリット46a,46bは、複数の蓄冷材容器20の間で、複数の扁平状冷媒管16を並設する並設方向に重畳するように位置する。すなわち、蓄冷熱交換器10の上下方向において、蓄冷材充填管20bの上下方向の位置が一定となる。このため、ロウ付け接合された蓄冷材容器20では、気密性の検査や蓄冷材の充填、さらには、蓄冷材の充填後の充填口閉栓などを、複数の蓄冷材容器20に対して同時に行うことが可能となり、生産効率を向上させることができる。 By performing brazing joining after the positioning of the cold storage material container 20 is completed, the pair of first slits 46a and 46b in the cold storage material filling pipe 20b after the brazing joining are provided between the plurality of cold storage material containers 20. These flat refrigerant pipes 16 are positioned so as to overlap in the juxtaposed direction in which the juxtaposed refrigerant pipes 16 are juxtaposed. That is, in the vertical direction of the cold storage heat exchanger 10, the vertical position of the cold storage material filling pipe 20b is constant. For this reason, in the cool storage material container 20 brazed and joined, a plurality of the cool storage material containers 20 are subjected to airtightness inspection, filling of the cool storage material, and closing of a filling port after filling of the cool storage material. Production efficiency can be improved.
次に、第2スリット48について説明する。
第2スリット48は、蓄冷材充填管20bの先端20cのうち、最も低い最下部を含む部分が切欠形成されてなる。第2スリット48は、蓄冷材充填管20bの内部に生じた凝縮水を重力により外部に排出する排出口としての機能を果たす。第2スリット48は、凝縮水の表面張力を考慮して、凝縮水を排出しやすい大きさに設定してもよい。
Next, the second slit 48 will be described.
The second slit 48 is formed by notching a portion including the lowest lowermost portion of the tip 20c of the regenerator material filling tube 20b. The 2nd slit 48 fulfill | performs the function as a discharge port which discharges the condensed water produced inside the cool storage material filling pipe 20b outside by gravity. The second slit 48 may be set to a size that allows the condensed water to be easily discharged in consideration of the surface tension of the condensed water.
次に、第3スリット50について説明する。
第3スリット50は、第2スリット48との間で、蓄冷材充填管20bの先端20cにおける開口(充填口)に沿って一対の第1スリット46a,46bのうち1つを挟むように位置する。すなわち、蓄冷材充填管20bの先端20cにおける充填口に沿って、第1スリット46a、第2スリット48、第1スリット46b、第3スリット50という順番で4つのスリットが切欠形成されている。
Next, the third slit 50 will be described.
The third slit 50 is located between the second slit 48 so as to sandwich one of the pair of first slits 46a and 46b along the opening (filling port) at the tip 20c of the cold storage material filling tube 20b. . That is, four slits are formed in the order of the first slit 46a, the second slit 48, the first slit 46b, and the third slit 50 along the filling port at the tip 20c of the cold storage material filling pipe 20b.
蓄冷材充填管20bが一対の第1スリット46a,46bと第2スリット48に加えて第3スリット50を更に有することで、蓄冷材充填管20bの先端部が周方向に4分割され、各スリット間の管壁を内方に折り曲げやすくなり、フランジ付プラグ52を外方から押圧して固定することが容易となる。 In addition to the pair of first slits 46a and 46b and the second slit 48, the cool storage material filling tube 20b further includes a third slit 50, so that the tip of the cool storage material filling tube 20b is divided into four in the circumferential direction. It becomes easy to bend | fold an inner tube wall inward, and it becomes easy to press the flanged plug 52 from the outside and to fix.
各スリット間の管壁を均一に折り曲げてフランジ付プラグ52に対して均等な押圧力を加えるために、一対の第1スリット46a,46b、第2スリット48、及び第3スリット50の4つのスリットは、特に、蓄冷材充填管20bの先端20cにおける開口に沿って等間隔に位置するように、切欠形成されてもよい。これにより、フランジ付プラグ52は均等に変形するので、蓄冷材容器20の内外間におけるシール性が低下する可能性を抑制できる。 Four slits of a pair of first slits 46a and 46b, a second slit 48, and a third slit 50 are used to uniformly bend the tube wall between the slits and apply an equal pressing force to the flanged plug 52. In particular, notches may be formed so as to be positioned at equal intervals along the opening at the tip 20c of the cold storage material filling pipe 20b. Thereby, since the plug 52 with a flange deform | transforms equally, the possibility that the sealing performance between the inside and outside of the cool storage material container 20 may be suppressed can be suppressed.
また、一対の第1スリット46a,46b、第2スリット48、及び第3スリット50の4つのスリットは、図5(b)に示すように、先端20cから段差20dまでの距離γからフランジ付プラグ52のフランジ厚さαを減算した減算値(γ―α)が、各スリットの先端20cからの深さβ以上となる、すなわち、β≦γ―α、という関係になるように切欠形成されてもよい。このような関係を有して切欠形成がなされれば、フランジ付プラグ52を固定すべく各スリット間の管壁を内方に折り曲げたときに、フランジ付プラグ52が、折り曲げ中心から遠い位置で管壁と接触し、過度の圧力がフランジ付プラグ52に加わる可能性が低くなり、フランジ付プラグ52の破損を抑制することができる。 Further, the four slits of the pair of first slits 46a and 46b, the second slit 48, and the third slit 50 are, as shown in FIG. 5B, a flanged plug from a distance γ from the tip 20c to the step 20d. The subtracted value (γ−α) obtained by subtracting the flange thickness α of 52 is not less than the depth β from the tip 20c of each slit, that is, notched so that β ≦ γ−α. Also good. If the notch is formed with such a relationship, when the tube wall between the slits is bent inward to fix the flanged plug 52, the flanged plug 52 is located far from the bending center. The possibility of excessive pressure being applied to the flanged plug 52 is reduced due to contact with the tube wall, and damage to the flanged plug 52 can be suppressed.
前述の本実施形態では、蓄冷材充填管20bに前述の4つのスリットが設けられている構成について説明したが、このような構成に限定されない。例えば、蓄冷材充填管20bが、一対の第1スリット46a,46bだけを有する構成、あるいは、一対の第1スリット46a,46bと第2スリット48とを有する構成であってもよい。 In the above-described embodiment, the configuration in which the above-described four slits are provided in the cold storage material filling tube 20b has been described, but the configuration is not limited thereto. For example, the regenerator material filling pipe 20b may have a configuration having only a pair of first slits 46a and 46b, or a configuration having a pair of first slits 46a and 46b and a second slit 48.
また、図示の実施形態は、あくまで本発明を例示するものであり、本発明は、説明した実施形態により直接的に示されるものに加え、特許請求の範囲内で当業者によりなされる各種の改良・変更を包含するものであることは言うまでもない。 The illustrated embodiments are merely examples of the present invention, and the present invention is not limited to those directly described by the described embodiments, and various modifications made by those skilled in the art within the scope of the claims. -Needless to say, it encompasses changes.
例えば、前述の本実施形態において、蓄冷材容器20の例として図3に示される構成について説明したが、蓄冷材容器20は、このような構成に限定されず、蓄冷材を封入する本体20aと、本体20aの所定位置から延びて空隙の外側に突出し、本体20aに対する蓄冷材の充填口をなす蓄冷材充填管20bと、を有するものであればよい。 For example, in the above-described embodiment, the configuration shown in FIG. 3 as an example of the cool storage material container 20 has been described. However, the cool storage material container 20 is not limited to such a configuration, and the main body 20a enclosing the cool storage material and As long as it has a cold storage material filling pipe 20b that extends from a predetermined position of the main body 20a and protrudes to the outside of the gap and forms a filling port of the cold storage material with respect to the main body 20a.
10 蓄冷熱交換器
12 上側ヘッダタンク
12a 上側前ヘッダタンク
12b 上側後ヘッダタンク
14 下側ヘッダタンク
14a 下側前ヘッダタンク
14b 下側後ヘッダタンク
16 冷媒管
16L 一方の冷媒管
16R 他方の冷媒管
18 フィン
20 蓄冷材容器
20a 本体
20b 蓄冷材充填管
22 サイドプレート
24 冷媒入口
26 冷媒出口
46a、46b 一対の第1スリット
48 第2スリット
50 第3スリット
52 フランジ付プラグ
DESCRIPTION OF SYMBOLS 10 Cold storage heat exchanger 12 Upper header tank 12a Upper front header tank 12b Upper rear header tank 14 Lower header tank 14a Lower front header tank 14b Lower rear header tank 16 Refrigerant pipe 16L One refrigerant pipe 16R The other refrigerant pipe 18 Fin 20 Cold storage material container 20a Main body 20b Cold storage material filling tube 22 Side plate 24 Refrigerant inlet 26 Refrigerant outlet 46a, 46b A pair of first slits 48 Second slit 50 Third slit 52 Plug with flange
Claims (4)
前記複数の蓄冷材容器は、夫々、前記蓄冷材を封入する本体と、前記本体の所定位置から延びて前記空隙の外側へ突出し、前記蓄冷材の充填口をなす蓄冷材充填管と、を有し、
前記蓄冷材充填管は、前記蓄冷材充填管の先端を前記本体に向けて切欠形成してなる一対の第1スリットを有するとともに、前記先端から前記本体に向けて延びる第2スリットを有し、
前記一対の第1スリットは、前記複数の蓄冷材容器の間で、前記複数の扁平状冷媒管が並設される並設方向に重畳するように位置し、前記第2スリットは、前記先端における最下部を含む部分が切欠形成されてなる蓄冷熱交換器。 A plurality of flat refrigerant pipes arranged in parallel at a predetermined interval with the flat portions facing each other between the two tanks and in communication with the two tanks, and some of the adjacent flat refrigerant pipes A cold storage heat exchanger comprising a plurality of cold storage material containers arranged and fixed in the gap between the flat portions and enclosed with a cold storage material,
Each of the plurality of cool storage material containers includes a main body that encloses the cool storage material, and a cool storage material filling pipe that extends from a predetermined position of the main body and protrudes to the outside of the gap to form a filling port of the cool storage material. And
The cold accumulating material packed tube, with the tip of the cold accumulating material packed tube to have a pair of first slits formed by notches formed toward the body, a second slit extending toward the main body from the front end ,
The pair of first slits are positioned so as to overlap in the juxtaposed direction in which the plurality of flat refrigerant tubes are juxtaposed between the plurality of cold storage material containers , and the second slit is formed at the tip A regenerative heat exchanger in which a portion including the lowermost portion is cut out .
前記第3スリットは、前記第2スリットとの間で、前記先端における前記充填口に沿って前記一対の第1スリットのうち1つを挟むように位置する請求項1に記載の蓄冷熱交換器。 The cold storage material filling pipe further has a third slit formed by cutting out the tip toward the main body,
2. The regenerative heat exchanger according to claim 1, wherein the third slit is positioned so as to sandwich one of the pair of first slits along the filling port at the tip between the third slit and the second slit . .
前記蓄冷材を封入する本体と、前記本体の所定位置から延びて前記空隙の外側へ突出し、前記蓄冷材の充填口をなす蓄冷材充填管と、を有し、前記蓄冷材充填管が、前記蓄冷材充填管の先端を前記本体に向けて切欠形成してなる一対のスリットを有し、前記一対のスリットが、前記空隙に前記蓄冷材容器を挿入したときに前記複数の扁平状冷媒管を並設する並設方向に並ぶように位置する前記蓄冷材容器は、A main body that encloses the cold storage material, and a cold storage material filling pipe that extends from a predetermined position of the main body and protrudes outside the gap and forms a filling port of the cold storage material. A pair of slits formed by notching the tips of the regenerator material-filled tubes toward the main body, and the pair of slits, when the regenerator material container is inserted into the gap, the plurality of flat refrigerant tubes The cold storage material container positioned so as to line up in the juxtaposed direction,
前記空隙に挿入された状態において、前記複数の蓄冷材容器の間で、前記一対のスリットが前記並設方向に重畳するように位置決めされた後、固定される蓄冷熱交換器の製造方法。In the state inserted in the said space | gap, the manufacturing method of the cool storage heat exchanger fixed after positioning a pair of said slits so that it may overlap in the said juxtaposition direction between these cool storage material containers.
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