WO2019187037A1 - 熱交換器 - Google Patents

熱交換器 Download PDF

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Publication number
WO2019187037A1
WO2019187037A1 PCT/JP2018/013722 JP2018013722W WO2019187037A1 WO 2019187037 A1 WO2019187037 A1 WO 2019187037A1 JP 2018013722 W JP2018013722 W JP 2018013722W WO 2019187037 A1 WO2019187037 A1 WO 2019187037A1
Authority
WO
WIPO (PCT)
Prior art keywords
water pipe
pipe
heat exchanger
water
groove
Prior art date
Application number
PCT/JP2018/013722
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
孝彦 河合
徹 小出
健太 村田
徹 利根川
亨淳 太田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201890000276.1U priority Critical patent/CN209991815U/zh
Priority to JP2020508814A priority patent/JP6910542B2/ja
Priority to PCT/JP2018/013722 priority patent/WO2019187037A1/ja
Publication of WO2019187037A1 publication Critical patent/WO2019187037A1/ja

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Classifications

    • 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

Definitions

  • the present invention relates to a heat exchanger in which a refrigerant pipe is wound around and joined to a water pipe.
  • Patent Document 1 a brazing material is wound around a water pipe, and a refrigerant pipe is wound on the brazing material, thereby joining the refrigerant pipe to the water pipe.
  • the present invention has been made to solve the above-described problems, and improves heat transfer performance by improving the adhesion between the water pipe and the refrigerant pipe, and can reduce the amount of brazing material used.
  • the purpose is to provide an exchange.
  • the heat exchanger according to the present invention has a spiral trough, a large-diameter water pipe whose inside is a water passage, and a smaller diameter than the water pipe that is wound around the trough and the inside is a refrigerant passage.
  • a groove is formed in the valley, and the groove is filled with a brazing material.
  • the heat transfer performance can be improved by improving the adhesion between the water pipe and the refrigerant pipe. Also, by filling the grooves formed in the valleys with the brazing material, the brazing material can be disposed at the intended position, and the positional deviation between the brazing material and the refrigerant pipe can be suppressed. The amount used can be reduced.
  • FIG. 1 is an overall schematic diagram of a heat exchanger according to Embodiment 1 of the present invention. It is a schematic diagram which shows a part of cross section in the axial direction of the water pipe
  • FIG. 1 is an overall schematic diagram of a heat exchanger 100 according to Embodiment 1 of the present invention.
  • a heat exchanger 100 according to Embodiment 1 includes a large-diameter water pipe 1 in which the pipe is a water passage, and a refrigerant pipe 2 having a smaller diameter than the water pipe 1 in which the pipe is a refrigerant passage. And is composed of.
  • the water pipe 1 is spirally wound so as to have an oval shape in 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.
  • 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.
  • the upper side of the refrigerant pipe 2 is a refrigerant inlet 2a, and the lower side of the refrigerant pipe 2 is a refrigerant outlet 2b.
  • the refrigerant in the refrigerant pipe 2 flows in from the direction of the FP 2a at the refrigerant inlet 2a and dissipates heat. Thereafter, the refrigerant flows out from the FP 2b direction at the refrigerant outlet 2b.
  • the tap water supplied from the FP1a direction at the water inlet 1a is heated by this heat and becomes hot water and flows out in the FP1b direction at the water outlet 1b.
  • FIG. 2 is a schematic diagram showing a part of a cross section in the axial direction of water tube 1 of heat exchanger 100 according to Embodiment 1 of the present invention.
  • the white arrow indicates the direction in which water flows
  • the dotted line indicates the axis of the water pipe 1.
  • the water pipe 1 is formed with a spiral valley 3 that is recessed toward the axis.
  • the valley portion 3 is formed along the outer peripheral shape of the refrigerant tube 2, and the refrigerant tube 2 can be disposed at an intended position by winding the refrigerant tube 2 around the water tube 1 along the valley portion 3.
  • a spiral groove 4 that is further recessed on the shaft side is formed in the center of the valley 3.
  • the groove 4 is formed over the entire length of the valley portion 3.
  • the heat exchanger 100 has the spiral valley 3, the large-diameter water pipe 1 in which the inside of the pipe is a water passage, and the valley 3, and the inside of the pipe is a refrigerant passage.
  • the refrigerant pipe 2 can be disposed at an intended position by winding the refrigerant pipe 2 along the valley 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 the intended position. Therefore, the position shift of the brazing material 5 and the refrigerant pipe 2 can be suppressed, and the usage amount of the brazing material 5 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 to improve the adhesion between the water pipe 1 and the refrigerant pipe 2. it can.
  • the water pipe 1 can be bent with a small bending radius in the state where the refrigerant pipe 2 is wound, so that the accommodation area of the heat exchanger 100 can be reduced.
  • Embodiment 2 of the present invention will be described, but the description overlapping with Embodiment 1 will be omitted, and the same reference numerals will be given to the same or corresponding parts as those in Embodiment 1.
  • the groove 4 is formed over the entire length of the valley 3, but in Embodiment 2, the groove 4 is partially formed with respect to the valley 3. That is, the groove 4 is formed only in a partial section of the valley portion 3.
  • the shape of the groove 4 is the same or partially different in all parts.
  • channel 4 is formed in optimal shape according to the site
  • the groove 4 is formed in an optimal shape in accordance with the portion of the water pipe 1, the pressure loss of water is suppressed and the refrigerant pipe 2 is wound. In this state, the bending radius of the water pipe 1 can be reduced to reduce the accommodation volume of the heat exchanger 100.
  • Embodiment 3 FIG.
  • Embodiment 3 of the present invention will be described, but the description overlapping with Embodiments 1 and 2 will be omitted, and the same or corresponding parts as those in Embodiments 1 and 2 will be denoted by the same reference numerals. .
  • FIG. 3 is a schematic diagram showing a part of a cross section in the axial direction of water tube 1 of heat exchanger 100 according to Embodiment 3 of the present invention.
  • the white arrow indicates the direction in which water flows
  • the dotted line indicates the axis of the water pipe 1.
  • a plurality of spiral grooves 4 (two in the third embodiment) further recessed on the axial side are formed in the central portion of the valley portion 3. That is, in the cross section in the axial direction of the water pipe 1, a plurality of grooves 4 are formed in the cross section of each valley 3.
  • the plurality of grooves 4 are formed side by side.
  • 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.
  • the effective inner diameter of the water tube 1 can be ensured.
  • the effect of promoting heat transfer can be obtained while suppressing the pressure loss of the water flowing through.
  • Embodiment 4 FIG.
  • the fourth embodiment of the present invention will be described, but the description overlapping with the first to third embodiments will be omitted, and the same reference numerals will be given to the same or corresponding parts as the first to third embodiments. .
  • FIG. 4 is a schematic diagram showing a part of a cross section in the axial direction of water tube 1 of heat exchanger 100 according to Embodiment 4 of the present invention.
  • a white arrow indicates a direction in which water flows
  • a dotted line indicates the axis of the water pipe 1
  • a two-dot chain line indicates a perpendicular to the axis of the water pipe 1.
  • the shape of the groove 4 is asymmetric with respect to the vertical line of the axis of the water pipe 1 in the cross section in the axial direction of the water pipe 1.
  • the shape of the groove 4 is asymmetric with respect to the axis perpendicular to the axis of the water tube 1, so that heat transfer enhancement due to increased turbulence can be obtained. it can. Moreover, since the retention of water around the groove 4 can be suppressed, corrosion due to dirt and water quality in the water pipe 1 can be suppressed.
  • Embodiment 5 FIG.
  • the fifth embodiment of the present invention will be described, but the description overlapping with the first to fourth embodiments will be omitted, and the same reference numerals will be given to the same or corresponding parts as the first to fourth embodiments. .
  • FIG. 5 is a schematic diagram showing a part of a cross section in the axial direction of water tube 1 of heat exchanger 100 according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic diagram illustrating a vertical cross section with respect to an axis in an arbitrary portion of the water pipe 1 of the heat exchanger 100 according to Embodiment 5 of the present invention.
  • the white arrow indicates the direction in which water flows
  • the dotted line indicates the axis of the water pipe 1
  • the two-dot chain line indicates a perpendicular to the axis of the water pipe 1.
  • the alternate long and two short dashes line indicates the groove 4, and (a) and (b) indicate cross sections of the adjacent valley portions 3 of the water pipe 1.
  • 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 3, and the groove 4 is not formed in a part of the valley 3.
  • the depth of a part of the groove 4 is different from the other part. That is, the depth of the groove 4 varies depending on the position.
  • the positional relationship of the grooves 4 formed in the cross-sectional portions of the adjacent valley portions 3 in the cross-section in the axial direction of the water pipe 1 is optimally set. That is, as shown in FIG. 6, the phase of the groove 4 in the adjacent valley 3 is changed, or the shape of the groove 4 is changed depending on the part of the water pipe 1.
  • the groove 4 is not formed by a part of the valley portion 3 or the depth of the groove 4 varies depending on the position. Furthermore, the positional relationship of the groove

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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)
PCT/JP2018/013722 2018-03-30 2018-03-30 熱交換器 WO2019187037A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201890000276.1U CN209991815U (zh) 2018-03-30 2018-03-30 热交换器
JP2020508814A JP6910542B2 (ja) 2018-03-30 2018-03-30 熱交換器
PCT/JP2018/013722 WO2019187037A1 (ja) 2018-03-30 2018-03-30 熱交換器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/013722 WO2019187037A1 (ja) 2018-03-30 2018-03-30 熱交換器

Publications (1)

Publication Number Publication Date
WO2019187037A1 true WO2019187037A1 (ja) 2019-10-03

Family

ID=68058596

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/013722 WO2019187037A1 (ja) 2018-03-30 2018-03-30 熱交換器

Country Status (3)

Country Link
JP (1) JP6910542B2 (zh)
CN (1) CN209991815U (zh)
WO (1) WO2019187037A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4819258U (zh) * 1971-07-14 1973-03-05
JPH09159388A (ja) * 1995-12-04 1997-06-20 Rinnai Corp 熱交換器の製造方法
JP2005076915A (ja) * 2003-08-28 2005-03-24 Kobe Steel Ltd 複合伝熱管
JP2006090697A (ja) * 2004-08-26 2006-04-06 Mitsubishi Electric Corp 捩り管形熱交換器
JP2012141076A (ja) * 2010-12-28 2012-07-26 Mitsubishi Electric Corp 捩り管形熱交換器の製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02290666A (ja) * 1989-02-21 1990-11-30 Toyo Radiator Co Ltd 熱交換器の製造方法
JP2002267382A (ja) * 2001-03-08 2002-09-18 Sky Alum Co Ltd アルミニウム製熱交換器用ろう付け構造体の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4819258U (zh) * 1971-07-14 1973-03-05
JPH09159388A (ja) * 1995-12-04 1997-06-20 Rinnai Corp 熱交換器の製造方法
JP2005076915A (ja) * 2003-08-28 2005-03-24 Kobe Steel Ltd 複合伝熱管
JP2006090697A (ja) * 2004-08-26 2006-04-06 Mitsubishi Electric Corp 捩り管形熱交換器
JP2012141076A (ja) * 2010-12-28 2012-07-26 Mitsubishi Electric Corp 捩り管形熱交換器の製造方法

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Publication number Publication date
JP6910542B2 (ja) 2021-07-28
CN209991815U (zh) 2020-01-24
JPWO2019187037A1 (ja) 2020-12-10

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