JPWO2019187037A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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JPWO2019187037A1
JPWO2019187037A1 JP2020508814A JP2020508814A JPWO2019187037A1 JP WO2019187037 A1 JPWO2019187037 A1 JP WO2019187037A1 JP 2020508814 A JP2020508814 A JP 2020508814A JP 2020508814 A JP2020508814 A JP 2020508814A JP WO2019187037 A1 JPWO2019187037 A1 JP WO2019187037A1
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water pipe
pipe
groove
heat exchanger
water
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JP6910542B2 (en
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孝彦 河合
孝彦 河合
徹 小出
徹 小出
健太 村田
健太 村田
徹 利根川
徹 利根川
亨淳 太田
亨淳 太田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

熱交換器は、螺旋状の谷部を有し、管内が水通路とされる大径の水管と、谷部に巻き付けられ、管内が冷媒通路とされる水管よりも小径の冷媒管と、を備え、谷部には溝が形成されており、溝にロウ材が充填されているものである。The heat exchanger has a large-diameter water pipe having a spiral valley and having a water passage inside the pipe, and a refrigerant pipe having a diameter smaller than that of a water pipe wound around the valley and having a refrigerant passage inside. A groove is formed in the valley portion, and the groove is filled with a brazing material.

Description

本発明は、水管の周りに冷媒管を巻き付けて接合してなる熱交換器に関するものである。 The present invention relates to a heat exchanger formed by winding a refrigerant pipe around a water pipe and joining them.

従来から、管内が水通路とされる大径の水管と、この水管の外周面に接合されて、管内が冷媒通路とされる、かかる水管よりも小径の冷媒管とからなり、水と冷媒との間で熱交換を行わせる熱交換器が知られている（例えば、特許文献１参照）。 Conventionally, a large-diameter water pipe whose inside is a water pipe and a refrigerant pipe whose diameter is smaller than that of the water pipe, which is joined to the outer peripheral surface of the water pipe and whose inside is a refrigerant passage, are composed of water and a refrigerant. A heat exchanger that exchanges heat between the two is known (see, for example, Patent Document 1).

特許文献１では、水管にロウ材を巻き付け、その上に冷媒管を巻き付けることで、水管に冷媒管を接合している。 In Patent Document 1, a brazing material is wound around a water pipe, and a refrigerant pipe is wound around the brazing material to join the refrigerant pipe to the water pipe.

特許第５９０３４４４号公報Japanese Patent No. 5903444

特許文献１の接合方法では、ロウ材の上に冷媒管を巻き付ける際に、ロウ材が冷媒管の中央真下となるように巻き付ける必要があるが、そのように巻き付けるのは難しい。そのため、ロウ材と冷媒管との位置がずれても大丈夫なように、ロウ材の使用量を多くしてロウ材の幅を広げる必要があった。また、媒管を水管に直に巻き付けることができず、ロウ材が加熱されて溶け流れ出た後は、冷媒管が水管から浮いてしまう。そのため、水管と冷媒管との密着性が低下し、伝熱性能が低下するという課題があった。 In the joining method of Patent Document 1, when the refrigerant pipe is wound on the brazing material, it is necessary to wind the brazing material so that the brazing material is directly below the center of the refrigerant pipe, but it is difficult to wind the refrigerant pipe in such a manner. Therefore, it is necessary to increase the amount of the brazing material used and widen the width of the brazing material so that the positions of the brazing material and the refrigerant pipe can be displaced. Further, the medium pipe cannot be directly wound around the water pipe, and the refrigerant pipe floats from the water pipe after the brazing material is heated and melts and flows out. Therefore, there is a problem that the adhesion between the water pipe and the refrigerant pipe is lowered and the heat transfer performance is lowered.

本発明は、以上のような課題を解決するためになされたもので、水管と冷媒管との密着性を向上させて伝熱性能を向上させるとともに、ロウ材の使用量を減らすことができる熱交換器を提供することを目的としている。 The present invention has been made to solve the above problems, and is capable of improving the adhesion between the water pipe and the refrigerant pipe to improve the heat transfer performance and reducing the amount of brazing material used. It is intended to provide an exchanger.

本発明に係る熱交換器は、螺旋状の谷部を有し、管内が水通路とされる大径の水管と、前記谷部に巻き付けられ、管内が冷媒通路とされる前記水管よりも小径の冷媒管と、を備え、前記谷部には溝が形成されており、前記溝にロウ材が充填されているものである。 The heat exchanger according to the present invention has a spiral valley portion and has a diameter smaller than that of a large-diameter water pipe having a water passage inside the pipe and a water pipe wound around the valley portion and having a refrigerant passage inside the pipe. The refrigerant pipe is provided, and a groove is formed in the valley portion, and the groove is filled with a brazing material.

本発明に係る熱交換器によれば、水管に螺旋状の谷部が形成されているため、水管と冷媒管との密着性を向上させて伝熱性能を向上させることができる。また、谷部に形成された溝にロウ材を充填することで、ロウ材を意図した位置に配置することができるとともにロウ材と冷媒管との位置ずれを抑制することができ、ロウ材の使用量を減らすことができる。 According to the heat exchanger according to the present invention, since the water pipe is formed with a spiral valley portion, it is possible to improve the adhesion between the water pipe and the refrigerant pipe and improve the heat transfer performance. Further, by filling the groove formed in the valley with the brazing material, the brazing material can be arranged at the intended position and the misalignment between the brazing material and the refrigerant pipe can be suppressed. The amount used can be reduced.

本発明の実施の形態１に係る熱交換器の全体概要図である。It is an overall schematic view of the heat exchanger which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る熱交換器の水管の軸方向における断面の一部を示す模式図である。It is a schematic diagram which shows a part of the cross section in the axial direction of the water pipe of the heat exchanger which concerns on Embodiment 1 of this invention. 本発明の実施の形態３に係る熱交換器の水管の軸方向における断面の一部を示す模式図である。It is a schematic diagram which shows a part of the cross section in the axial direction of the water pipe of the heat exchanger which concerns on Embodiment 3 of this invention. 本発明の実施の形態４に係る熱交換器の水管の軸方向における断面の一部を示す模式図である。It is a schematic diagram which shows a part of the cross section in the axial direction of the water pipe of the heat exchanger which concerns on Embodiment 4 of this invention. 本発明の実施の形態５に係る熱交換器の水管の軸方向における断面の一部を示す模式図である。It is a schematic diagram which shows a part of the cross section in the axial direction of the water pipe of the heat exchanger which concerns on Embodiment 5 of this invention. 本発明の実施の形態５に係る熱交換器の水管の任意の部分における軸に対する垂直断面を示す模式図である。It is a schematic diagram which shows the vertical cross section with respect to the axis in arbitrary part of the water pipe of the heat exchanger which concerns on Embodiment 5 of this invention.

以下、本発明の実施の形態を図面に基づいて説明する。なお、以下に説明する実施の形態によって本発明が限定されるものではない。また、以下の図面では各構成部材の大きさの関係が実際のものとは異なる場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one.

実施の形態１．
図１は、本発明の実施の形態１に係る熱交換器１００の全体概要図である。
図１に示すように、本実施の形態１に係る熱交換器１００は、管内が水通路とされる大径の水管１と、管内が冷媒通路とされる水管１よりも小径の冷媒管２とによって構成されている。水管１は、平面視して長円形状となるように螺旋状に巻かれており、水通路を形成している。冷媒管２は、水管１の外周に螺旋状に巻き付けられ、冷媒通路を形成している。Embodiment 1.
FIG. 1 is an overall schematic view of the heat exchanger 100 according to the first embodiment of the present invention.
As shown in FIG. 1, the heat exchanger 100 according to the first embodiment has a large-diameter water pipe 1 having a water passage inside the pipe and a refrigerant pipe 2 having a diameter smaller than that of the water pipe 1 having a refrigerant passage inside the pipe. It is composed of and. The water pipe 1 is spirally wound so as to have an oval shape in a plan view, and forms a water passage. The refrigerant pipe 2 is spirally wound around the outer circumference of the water pipe 1 to form a refrigerant passage.

そして、水管１における下段側を水流入口１ａ、水管１における上段側を水流出口１ｂとしている。また、冷媒管２における上段側を冷媒流入口２ａ、冷媒管２における下段側を冷媒流出口２ｂとしている。 The lower side of the water pipe 1 is the water inlet 1a, and the upper side of the water pipe 1 is the water outlet 1b. Further, the upper side of the refrigerant pipe 2 is the refrigerant inflow port 2a, and the lower side of the refrigerant pipe 2 is the refrigerant outlet 2b.

熱交換器１００において、冷媒管２内の冷媒は、冷媒流入口２ａにおいてＦＰ２ａ方向から流入し放熱する。その後、冷媒流出口２ｂにおいてＦＰ２ｂ方向から流出する。水流入口１ａにおいてＦＰ１ａ方向から供給された水道水はこの熱により加熱され、温湯となって水流出口１ｂにおいてＦＰ１ｂ方向に流出する。 In the heat exchanger 100, the refrigerant in the refrigerant pipe 2 flows in from the FP2a direction at the refrigerant inflow port 2a and dissipates heat. After that, it flows out from the FP2b direction at the refrigerant outlet 2b. The tap water supplied from the FP1a direction at the water inlet 1a is heated by this heat, becomes hot water, and flows out in the FP1b direction at the water outlet 1b.

図２は、本発明の実施の形態１に係る熱交換器１００の水管１の軸方向における断面の一部を示す模式図である。なお、図２において、白抜きの矢印は水が流れる方向を示しており、点線は水管１の軸を示している。
図２に示すように、水管１には、軸側に凹んだ螺旋状の谷部３が形成されている。谷部３は、冷媒管２の外周形状に沿って形成されており、冷媒管２を谷部３に沿って水管１に巻き付けることで、冷媒管２を意図した位置に配置することができる。FIG. 2 is a schematic view showing a part of a cross section of the water pipe 1 of the heat exchanger 100 according to the first embodiment of the present invention in the axial direction. In FIG. 2, the white arrow indicates the direction in which water flows, and the dotted line indicates the axis of the water pipe 1.
As shown in FIG. 2, the water pipe 1 is formed with a spiral valley portion 3 recessed on the shaft side. The valley portion 3 is formed along the outer peripheral shape of the refrigerant pipe 2, and by winding the refrigerant pipe 2 around the water pipe 1 along the valley portion 3, the refrigerant pipe 2 can be arranged at an intended position.

また、谷部３の中央部には、軸側にさらに凹んだ螺旋状の溝４が形成されている。この溝４は、谷部３の全長にわたって形成されている。そして、溝４に水管１と冷媒管２とを接合するロウ材５を充填することで、ロウ材５を意図した位置に配置することができる。そのため、ロウ材５と冷媒管２との位置ずれを抑制することができ、ロウ材５の使用量を減らすことができる。また、ロウ材５が加熱されて溶けた後も水管１と冷媒管２との間に隙間が生じるのを抑制することができる。そのため、溝４によって冷媒管２が水管１から浮いてしまうのを抑制することができ、水管１と冷媒管２との密着性を向上させることができる。 Further, in the central portion of the valley portion 3, a spiral groove 4 further recessed on the shaft side is formed. The groove 4 is formed over the entire length of the valley portion 3. Then, by filling the groove 4 with the brazing material 5 for joining the water pipe 1 and the refrigerant pipe 2, the brazing material 5 can be arranged at an intended position. Therefore, the misalignment between the brazing material 5 and the refrigerant pipe 2 can be suppressed, and the amount of the brazing material 5 used can be reduced. Further, it is possible to suppress the formation of a gap between the water pipe 1 and the refrigerant pipe 2 even after the brazing material 5 is heated and melted. Therefore, it is possible to prevent the refrigerant pipe 2 from floating from the water pipe 1 by the groove 4, and it is possible to improve the adhesion between the water pipe 1 and the refrigerant pipe 2.

以上、本実施の形態１に係る熱交換器１００は、螺旋状の谷部３を有し、管内が水通路とされる大径の水管１と、谷部３に巻き付けられ、管内が冷媒通路とされる水管１よりも小径の冷媒管２と、を備え、谷部３には溝４が形成されており、溝４にロウ材５が充填されているものである。 As described above, the heat exchanger 100 according to the first embodiment has a spiral valley portion 3 and is wound around a large-diameter water pipe 1 having a water passage inside the pipe and a valley portion 3, and the inside of the pipe is a refrigerant passage. A refrigerant pipe 2 having a diameter smaller than that of the water pipe 1 is provided, a groove 4 is formed in the valley portion 3, and the brazing material 5 is filled in the groove 4.

本実施の形態１に係る熱交換器１００によれば、水管１に形成された谷部３に沿って冷媒管２を巻き付けることで、冷媒管２を意図した位置に配置することができる。また、谷部３に形成された溝４にロウ材５を充填することで、ロウ材５を意図した位置に配置することができる。そのため、ロウ材５と冷媒管２との位置ずれを抑制することができ、ロウ材５の使用量を減らすことができる。また、ロウ材５が加熱されて溶けた後も、溝４によって冷媒管２が水管１から浮いてしまうのを抑制することができ、水管１と冷媒管２との密着性を向上させることができる。 According to the heat exchanger 100 according to the first embodiment, the refrigerant pipe 2 can be arranged at an intended position by winding the refrigerant pipe 2 along the valley portion 3 formed in the water pipe 1. Further, by filling the groove 4 formed in the valley portion 3 with the brazing material 5, the brazing material 5 can be arranged at an intended position. Therefore, the misalignment between the brazing material 5 and the refrigerant pipe 2 can be suppressed, and the amount of the brazing material 5 used can be reduced. Further, even after the brazing material 5 is heated and melted, it is possible to prevent the refrigerant pipe 2 from floating from the water pipe 1 by the groove 4, and it is possible to improve the adhesion between the water pipe 1 and the refrigerant pipe 2. it can.

また、谷部３に溝４を形成することで、冷媒管２を巻き付けた状態で水管１の曲げ半径を小さくして曲げることができるため、熱交換器１００の収容面積を小さくできる。 Further, by forming the groove 4 in the valley portion 3, the bending radius of the water pipe 1 can be reduced in the state where the refrigerant pipe 2 is wound, so that the accommodation area of the heat exchanger 100 can be reduced.

なお、谷部３に溝４を形成することによる上記の作用および効果は、後述する実施の形態２〜５においても同様に適用される。 The above-mentioned actions and effects by forming the groove 4 in the valley portion 3 are similarly applied to the following embodiments 2 to 5.

実施の形態２．
以下、本発明の実施の形態２について説明するが、実施の形態１と重複するものについては説明を省略し、実施の形態１と同じ部分または相当する部分には同じ符号を付す。Embodiment 2.
Hereinafter, the second embodiment of the present invention will be described, but the description of the parts overlapping with the first embodiment will be omitted, and the same parts as those of the first embodiment or the corresponding parts will be designated by the same reference numerals.

実施の形態１では、溝４が谷部３の全長にわたって形成されているが、本実施の形態２では、溝４が谷部３に対して部分的に形成されている。つまり、谷部３の一部区間にのみ溝４が形成されている。 In the first embodiment, the groove 4 is formed over the entire length of the valley portion 3, but in the second embodiment, the groove 4 is partially formed with respect to the valley portion 3. That is, the groove 4 is formed only in a part of the valley portion 3.

また、溝４の形状は、全ての部分で同一、または、部分的に異なっている。また、溝４を、水流入口１ａ側の部位、水流出口１ｂ側の部位、熱交換器１００の収納形状において経路を曲げる部位など、水管１の部位に合わせて最適な形状に形成する。 Further, the shape of the groove 4 is the same or partially different in all parts. Further, the groove 4 is formed into an optimum shape according to the part of the water pipe 1, such as the part on the water inlet 1a side, the part on the water outlet 1b side, and the part where the path is bent in the storage shape of the heat exchanger 100.

以上のように、本実施の形態２に係る熱交換器１００では、溝４が水管１の部位に合わせて最適な形状に形成されているため、水の圧力損失を抑え、冷媒管２を巻き付けた状態で水管１の曲げ半径を小さくして、熱交換器１００の収容容積を小さくすることができる。 As described above, in the heat exchanger 100 according to the second embodiment, since the groove 4 is formed in an optimum shape according to the portion of the water pipe 1, the pressure loss of water is suppressed and the refrigerant pipe 2 is wound around. In this state, the bending radius of the water pipe 1 can be reduced to reduce the accommodating volume of the heat exchanger 100.

実施の形態３．
以下、本発明の実施の形態３について説明するが、実施の形態１および２と重複するものについては説明を省略し、実施の形態１および２と同じ部分または相当する部分には同じ符号を付す。Embodiment 3.
Hereinafter, the third embodiment of the present invention will be described, but the description of the parts overlapping with the first and second embodiments will be omitted, and the same parts or the corresponding parts as those of the first and second embodiments will be designated by the same reference numerals. ..

図３は、本発明の実施の形態３に係る熱交換器１００の水管１の軸方向における断面の一部を示す模式図である。なお、図３において、白抜きの矢印は水が流れる方向を示しており、点線は水管１の軸を示している。
本実施の形態３では、谷部３の中央部には、軸側にさらに凹んだ螺旋状の溝４が複数（本実施の形態３では２つ）形成されている。つまり、水管１の軸方向における断面において、各谷部３の断面部に溝４が複数形成されている。この複数の溝４は、並んで形成されている。谷部３に複数の溝４を形成することにより、水管１の有効内径を確保しながら水管１と水管１を流れる水との伝熱面積を増やすことができる。なお、溝４の数は２つに限定されず、３つ以上でもよい。FIG. 3 is a schematic view showing a part of a cross section of the water pipe 1 of the heat exchanger 100 according to the third embodiment of the present invention in the axial direction. In FIG. 3, the white arrow indicates the direction in which water flows, and the dotted line indicates the axis of the water pipe 1.
In the third embodiment, a plurality of spiral grooves 4 (two in the third embodiment) that are further recessed on the shaft side are formed in the central portion of the valley portion 3. That is, in the cross section of the water pipe 1 in the axial direction, a plurality of grooves 4 are formed in the cross section of each valley portion 3. The plurality of grooves 4 are formed side by side. By forming the plurality of grooves 4 in the valley portion 3, the heat transfer area between the water pipe 1 and the water flowing through the water pipe 1 can be increased while ensuring the effective inner diameter of the water pipe 1. The number of grooves 4 is not limited to two, and may be three or more.

以上のように、本実施の形態３に係る熱交換器１００では、谷部３に複数の溝４が形成されていることにより、水管１の有効内径を確保することができるため、水管１内を流れる水の圧力損失を抑えながら伝熱促進の効果を得ることができる。 As described above, in the heat exchanger 100 according to the third embodiment, since the effective inner diameter of the water pipe 1 can be secured by forming the plurality of grooves 4 in the valley portion 3, the inside of the water pipe 1 The effect of promoting heat transfer can be obtained while suppressing the pressure loss of the water flowing through the water.

実施の形態４．
以下、本発明の実施の形態４について説明するが、実施の形態１〜３と重複するものについては説明を省略し、実施の形態１〜３と同じ部分または相当する部分には同じ符号を付す。Embodiment 4.
Hereinafter, the fourth embodiment of the present invention will be described, but the description of the parts overlapping with the first to third embodiments will be omitted, and the same parts or the corresponding parts as those of the first to third embodiments will be designated by the same reference numerals. ..

図４は、本発明の実施の形態４に係る熱交換器１００の水管１の軸方向における断面の一部を示す模式図である。なお、図４において、白抜きの矢印は水が流れる方向を示しており、点線は水管１の軸を示しており、二点鎖線は水管１の軸に対する垂線を示している。
本実施の形態４では、水管１の軸方向における断面において、溝４の形状が、水管１の軸の垂線に対して非対称になっている。FIG. 4 is a schematic view showing a part of a cross section of the water pipe 1 of the heat exchanger 100 according to the fourth embodiment of the present invention in the axial direction. In FIG. 4, the white arrow indicates the direction in which water flows, the dotted line indicates the axis of the water pipe 1, and the alternate long and short dash line indicates a perpendicular line to the axis of the water pipe 1.
In the fourth embodiment, the shape of the groove 4 is asymmetrical with respect to the perpendicular line of the axis of the water pipe 1 in the cross section of the water pipe 1 in the axial direction.

以上のように、本実施の形態４に係る熱交換器１００では、溝４の形状が水管１の軸の垂線に対して非対称になっているため、乱流増加による伝熱促進を得ることができる。また、溝４周辺における水の滞留を抑制することができるため、水管１内の汚れおよび水質による腐食を抑えることができる。 As described above, in the heat exchanger 100 according to the fourth embodiment, since the shape of the groove 4 is asymmetric with respect to the perpendicular line of the axis of the water pipe 1, it is possible to obtain heat transfer promotion by increasing turbulence. it can. Further, since the retention of water around the groove 4 can be suppressed, the dirt in the water pipe 1 and the corrosion due to the water quality can be suppressed.

実施の形態５．
以下、本発明の実施の形態５について説明するが、実施の形態１〜４と重複するものについては説明を省略し、実施の形態１〜４と同じ部分または相当する部分には同じ符号を付す。Embodiment 5.
Hereinafter, the fifth embodiment of the present invention will be described, but the description of the parts overlapping with the first to fourth embodiments is omitted, and the same parts or the corresponding parts as those of the first to fourth embodiments are designated by the same reference numerals. ..

図５は、本発明の実施の形態５に係る熱交換器１００の水管１の軸方向における断面の一部を示す模式図である。図６は、本発明の実施の形態５に係る熱交換器１００の水管１の任意の部分における軸に対する垂直断面を示す模式図である。なお、図５において、白抜きの矢印は水が流れる方向を示しており、点線は水管１の軸を示しており、二点鎖線は水管１の軸に対する垂線を示している。また、図６において、二点鎖線は溝４を示しており、（ａ）と（ｂ）とはそれぞれ水管１の隣り合う谷部３での断面を示している。
実施の形態１では、溝４が谷部３の全長にわたって形成されているが、本実施の形態５では、流れる水の圧力損失を抑えるために、図５に示すように溝４の一部がしゃ断されている。つまり、溝４が谷部３の全長にわたって形成されておらず、溝４が谷部３の一部で形成されていない。または、溝４の一部の深さは他の部分と変わっている。つまり、溝４は位置によって深さが異なっている。FIG. 5 is a schematic view showing a part of a cross section of the water pipe 1 of the heat exchanger 100 according to the fifth embodiment of the present invention in the axial direction. FIG. 6 is a schematic view showing a cross section perpendicular to an axis at an arbitrary portion of the water pipe 1 of the heat exchanger 100 according to the fifth embodiment of the present invention. In FIG. 5, the white arrow indicates the direction in which water flows, the dotted line indicates the axis of the water pipe 1, and the alternate long and short dash line indicates a perpendicular line to the axis of the water pipe 1. Further, in FIG. 6, the alternate long and short dash line indicates the groove 4, and (a) and (b) each indicate a cross section at an adjacent valley portion 3 of the water pipe 1.
In the first embodiment, the groove 4 is formed over the entire length of the valley portion 3, but in the fifth embodiment, in order to suppress the pressure loss of the flowing water, a part of the groove 4 is formed as shown in FIG. It has been cut off. That is, the groove 4 is not formed over the entire length of the valley portion 3, and the groove 4 is not formed in a part of the valley portion 3. Alternatively, the depth of a part of the groove 4 is different from that of the other part. That is, the groove 4 has a different depth depending on the position.

さらに、乱流効果を増大するために、水管１の軸方向における断面において、隣り合う谷部３の断面部において形成されている溝４の位置関係を最適に設定する。つまり、図６に示すように、隣り合う谷部３での溝４の位相を変えたり、水管１の部位によって溝４の形状を変えたりする。 Further, in order to increase the turbulent flow effect, the positional relationship of the grooves 4 formed in the cross-sections of the adjacent valleys 3 is optimally set in the axial cross-section of the water pipe 1. That is, as shown in FIG. 6, the phase of the grooves 4 in the adjacent valleys 3 is changed, and the shape of the grooves 4 is changed depending on the portion of the water pipe 1.

以上のように、本実施の形態５に係る熱交換器１００では、溝４が谷部３の一部で形成されていない、または、溝４は位置によって深さが異なっている。さらに、隣り合う谷部３の断面部において形成されている溝４の位置関係が最適に設定されている。そのため、流れる水の圧力損失を抑えながら乱流効果により伝熱性能を向上させることができる。 As described above, in the heat exchanger 100 according to the fifth embodiment, the groove 4 is not formed in a part of the valley portion 3, or the groove 4 has a different depth depending on the position. Further, the positional relationship of the grooves 4 formed in the cross-sectional portions of the adjacent valley portions 3 is optimally set. Therefore, the heat transfer performance can be improved by the turbulent flow effect while suppressing the pressure loss of the flowing water.

１ 水管、１ａ 水流入口、１ｂ 水流出口、２ 冷媒管、２ａ 冷媒流入口、２ｂ 冷媒流出口、３ 谷部、４ 溝、５ ロウ材、１００ 熱交換器。 1 water pipe, 1a water inlet, 1b water outlet, 2 refrigerant pipe, 2a refrigerant inlet, 2b refrigerant outlet, 3 valleys, 4 grooves, 5 brazing materials, 100 heat exchangers.

Claims (5)

螺旋状の谷部を有し、管内が水通路とされる大径の水管と、
前記谷部に巻き付けられ、管内が冷媒通路とされる前記水管よりも小径の冷媒管と、を備え、
前記谷部には溝が形成されており、
前記溝にロウ材が充填されている
熱交換器。A large-diameter water pipe that has a spiral valley and the inside of the pipe is a water passage.
A refrigerant pipe having a diameter smaller than that of the water pipe, which is wound around the valley and whose inside is a refrigerant passage, is provided.
A groove is formed in the valley,
A heat exchanger in which the groove is filled with a brazing material. 前記谷部の一部区間にのみ溝が形成されている
請求項１に記載の熱交換器。The heat exchanger according to claim 1, wherein a groove is formed only in a part of the valley portion. 前記谷部に前記溝が複数形成されている
請求項１に記載の熱交換器。The heat exchanger according to claim 1, wherein a plurality of the grooves are formed in the valley portion. 前記水管の軸方向における断面において、前記溝の形状が、前記水管の軸の垂線に対して非対称になっている
請求項１に記載の熱交換器。The heat exchanger according to claim 1, wherein the shape of the groove is asymmetric with respect to the perpendicular line of the axis of the water pipe in a cross section in the axial direction of the water pipe. 前記溝は位置によって深さが異なる
請求項１に記載の熱交換器。The heat exchanger according to claim 1, wherein the groove has a different depth depending on the position.
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Citations (4)

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JP2002267382A (en) * 2001-03-08 2002-09-18 Sky Alum Co Ltd Method of manufacturing aluminum heat exchanger brazing structure
JP2012141076A (en) * 2010-12-28 2012-07-26 Mitsubishi Electric Corp Twisted tube type heat exchanger manufacturing method

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JPH09159388A (en) * 1995-12-04 1997-06-20 Rinnai Corp Method of manufacturing heat exchanger
JP2005076915A (en) * 2003-08-28 2005-03-24 Kobe Steel Ltd Composite heat exchanger tube
JP4449856B2 (en) * 2004-08-26 2010-04-14 三菱電機株式会社 Twisted tube heat exchanger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4819258U (en) * 1971-07-14 1973-03-05
JPH02290666A (en) * 1989-02-21 1990-11-30 Toyo Radiator Co Ltd Manufacture of heat exchanger
JP2002267382A (en) * 2001-03-08 2002-09-18 Sky Alum Co Ltd Method of manufacturing aluminum heat exchanger brazing structure
JP2012141076A (en) * 2010-12-28 2012-07-26 Mitsubishi Electric Corp Twisted tube type heat exchanger manufacturing method

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