WO2021181694A1 - 螺旋溝付管製造装置、熱交換器、及び、ヒートポンプ装置 - Google Patents

螺旋溝付管製造装置、熱交換器、及び、ヒートポンプ装置 Download PDF

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Publication number
WO2021181694A1
WO2021181694A1 PCT/JP2020/011234 JP2020011234W WO2021181694A1 WO 2021181694 A1 WO2021181694 A1 WO 2021181694A1 JP 2020011234 W JP2020011234 W JP 2020011234W WO 2021181694 A1 WO2021181694 A1 WO 2021181694A1
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WO
WIPO (PCT)
Prior art keywords
pipe
circular tube
tube
spiral grooved
circular
Prior art date
Application number
PCT/JP2020/011234
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English (en)
French (fr)
Japanese (ja)
Inventor
徹 利根川
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 PCT/JP2020/011234 priority Critical patent/WO2021181694A1/ja
Priority to JP2022505719A priority patent/JPWO2021181694A1/ja
Publication of WO2021181694A1 publication Critical patent/WO2021181694A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14—Twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes

Definitions

  • the present disclosure relates to a spiral grooved tube manufacturing device, a heat exchanger, and a heat pump device.
  • the circular tube holding device included in the spiral grooved tube manufacturing apparatus disclosed in Patent Document 1 below includes a circular tube fixing device capable of locking a desired portion in the pipe axial direction in an unprocessed portion of the circular tube, and a base.
  • a directional moving member is provided.
  • the circular tube holding device has a problem that the length of the circular tube that can be processed is limited because the range in which the circular tube can be moved in the pipe axis direction is limited.
  • a heat exchanger using a spiral grooved tube with a limited length in order to improve the heat exchange performance, multiple spiral grooved tubes are connected in series and the spiral grooved tube is connected. It is necessary to extend the total length of.
  • the process of connecting a plurality of spiral grooved pipes in series causes an increase in manufacturing cost.
  • the present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a low-cost spiral grooved tube, a heat exchanger, and a heat pump device.
  • the spiral grooved pipe manufacturing apparatus of the present disclosure is provided on a base and a tool portion having a plurality of processing rollers in contact with a circular pipe as a work, and is provided with a relative torsional drive between the circular pipe and the tool portion.
  • a spiral grooved tube manufacturing device including a rotary drive device for applying force and a circular tube holding device provided on a base for holding an unprocessed portion of the circular tube, and a position in the circumferential direction of the circular tube.
  • the plurality of machining rollers are arranged at different positions from each other, each of the plurality of machining rollers can rotate around an axis inclined with respect to the tube axis direction of the circular tube, and the circular tube holding device rotates.
  • the unprocessed portion is held so that the circular tube moves in the direction of the tube axis without rotating when the drive device is operated, the circular tube holding device has a holding roller in contact with the unprocessed portion, and the holding roller is a tube shaft. It is rotatable around an axis perpendicular to the direction.
  • the heat exchanger of the present disclosure includes a seamless spiral grooved pipe manufactured by the above-mentioned spiral grooved pipe manufacturing apparatus, and a refrigerant pipe arranged along the spiral groove of the spiral grooved pipe. be.
  • the heat pump device of the present disclosure includes the above heat exchanger.
  • FIG. 5 is a cross-sectional side view of the spiral grooved pipe manufacturing apparatus according to the first embodiment. It is sectional drawing cut along the line AA in FIG. It is sectional drawing cut along the line BB in FIG. It is a block diagram which shows the embodiment of the heat pump apparatus of this disclosure. It is a figure which shows the main part of the water refrigerant heat exchanger. It is a flowchart which shows an example of the method of manufacturing a spiral grooved tube by the spiral grooved tube manufacturing apparatus of this disclosure.
  • FIG. 1 is a perspective view conceptually showing a main part of the spiral grooved pipe manufacturing apparatus according to the first embodiment.
  • FIG. 2 is a detailed view of the processing roller in FIG.
  • FIG. 3 is a perspective view showing the positional relationship between the circular tube and the processing roller in FIG.
  • FIG. 4 is a cross-sectional side view of the spiral grooved pipe manufacturing apparatus according to the first embodiment.
  • FIG. 5 is a cross-sectional view taken along the line AA in FIG.
  • FIG. 6 is a cross-sectional view taken along the line BB in FIG.
  • the circular tube 1 which is a work is held by the holding roller 41 of the circular tube holding device 40.
  • the circular tube holding device 40 holds the circular tube 1 so that the circular tube 1 cannot rotate around the tube axis O and the circular tube 1 can move in the direction of the tube axis O.
  • the tool unit 9 includes a plurality of processing rollers 2 which are processing tools.
  • the processing roller 2 is arranged at a position where it is pushed into the circular tube 1, that is, a position where the tube wall of the circular tube 1 is plastically deformed to form a recess.
  • the plurality of processing rollers 2 are arranged around the pipe axis O so as to surround the circular pipe 1 at equal angles to each other.
  • the tool portion 9 is rotationally driven around the pipe shaft O by the rotary drive device 10 to form the unprocessed portion 1a of the circular pipe 1 into the spiral grooved pipe 1b.
  • the tool portion 9 rotates while maintaining the relative position between the pipe shaft O and the processing roller 2 within the same cross section orthogonal to the pipe shaft O.
  • the direction in which the tool portion 9 is rotationally driven is indicated by the arrow R in FIG. This rotation direction is the rotation direction in which the spiral grooved pipe 1b formed by the plurality of processing rollers 2 extends to the side where the circular pipe holding device 40 does not exist.
  • each processing roller 2 is rotatably supported around the shaft 2a, thereby reducing the resistance force involved in the molding process of the spiral groove 1c to the circular tube 1.
  • the positional relationship between the circular tube 1 and the processing roller 2 is such that the axis 2a is inclined by a predetermined inclination angle 2c with respect to the axis 2b that is parallel to the tube axis O and passes through the center of the processing roller 2. It becomes a positional relationship to be arranged.
  • Each processing roller 2 forms a spiral groove 1c on the outer periphery of the spiral grooved pipe 1b.
  • the tool portion 9 with four processing rollers 2, it is possible to form four spiral grooves 1c extending in parallel with the outer circumference of the spiral grooved pipe 1b.
  • the overall main configuration of the spiral grooved pipe manufacturing apparatus having the above-mentioned processing roller 2, holding roller 41, and rotary drive device 10 is as shown in FIG.
  • the rotary drive device 10 and the circular tube holding device 40 are provided on one base 3.
  • the rotary drive device 10 applies a relative torsional driving force between the circular tube 1 and the tool portion 9.
  • the tool unit 9 has a plurality of mounting pedestals 11 corresponding to the plurality of processing rollers 2.
  • the mounting pedestal 11 holds the shaft 2a, which is the rotating shaft or the fixed shaft of the processing roller 2, at a predetermined inclination angle 2c with respect to the direction of the pipe shaft O.
  • the mounting pedestal 11 regulates the processing roller 2 from moving in the direction of the shaft 2a.
  • the plurality of mounting pedestals 11 are arranged at equal angles or intervals in the circumferential direction with respect to the pipe axis O.
  • the mounting pedestal 11 is configured to be movable in the radial direction with respect to the rotation driving member 12.
  • the mounting pedestal 11 is driven in the centripetal direction or the radial direction by a driving means (not shown). With this configuration, it is possible to narrow the opening formed on the central side by the plurality of processing rollers 2 and push the tube wall of the circular tube 1 or to open the opening after processing to take out the spiral grooved tube 1b. It has become.
  • the rotation drive device 10 includes a holding member 13, a belt 14, a motor 15, and a pulley 15a in addition to the rotation drive member 12 described above.
  • the rotation drive member 12 has a cylindrical shape in which a through hole 12a through which the circular tube 1 is passed is provided at the center thereof.
  • the rotation drive member 12 is rotatably held by the holding member 13 fixed to the base 3.
  • the holding member 13 regulates the rotation drive member 12 from moving in the direction of the pipe axis O.
  • the belt 14 connects the rotation drive member 12 to the pulley 15a fixed to the output shaft of the motor 15.
  • the rotation drive member 12 is rotationally driven around the pipe shaft O.
  • the opening formed in the rotation center portion by the plurality of mounting pedestals 11 and the processing roller 2 also rotates around the pipe axis O.
  • the circular tube holding device 40 has a holding roller 41 in contact with the raw portion 1a of the circular tube 1.
  • the holding roller 41 is rotatable around an axis 42 perpendicular to the direction of the tube axis O.
  • the shaft fixing member 43 fixed to the base 3 holds the shaft 42.
  • the holding roller 41 is pressed against the unprocessed portion 1a of the circular pipe 1 by the shaft 42 and the shaft fixing member 43.
  • the circular tube holding device 40 holds the circular tube 1 non-rotatably by the frictional force of the contact portion between the holding roller 41 and the unprocessed portion 1a.
  • the pipe shaft O can be seen from either the unprocessed portion 1a side of the circular pipe 1 or the molded spiral grooved pipe 1b side with respect to the processed portion by the plurality of processing rollers 2. No active driving force is applied in the direction of.
  • a plurality of mounting pedestals 11 symmetrically arranged around the circular tube 1 at an equal angle become the rotation drive member 12. It rotates integrally.
  • a plurality of processing rollers 2 rotatably provided on the shaft 2a inclined at a predetermined inclination angle 2c set in advance with respect to the rotation driving member 12 form a circular tube on the tube wall of the circular tube 1, respectively.
  • a spiral groove 1c is formed by pushing in the direction of the center of 1.
  • the processing roller is held in a state where the circular pipe 1 is held by the circular pipe holding device which is configured so as to be non-rotatable with respect to the unprocessed portion 1a of the circular pipe 1 and to be driven and moved only in the direction of the pipe axis O as in the prior art.
  • the spiral groove 1c is formed by 2
  • the movable range of the circular tube 1 is limited by the movable range of the circular tube holding device.
  • the circular tube holding device 40 of the present embodiment the circular tube 1 can be held non-rotatably without limiting the moving range of the circular tube 1 in the direction of the tube axis O. Therefore, there is an advantage that the spiral grooved tube 1b can be continuously manufactured without stopping the molding.
  • the outer peripheral surface of the holding roller 41 in the example shown in FIG. 6 is a concave curved surface along the arc of the pipe wall of the unprocessed portion 1a in a cross section perpendicular to the direction of the pipe axis O.
  • the radius of curvature of the concave curved surface of the outer peripheral surface of the holding roller 41 in the cross section of FIG. 6 corresponds to 1/2 of the outer diameter of the unprocessed portion 1a.
  • the circular tube holding device 40 of the present embodiment includes two holding rollers 41 facing each other with the unprocessed portion 1a in between. As a result, it is possible to more reliably prevent the rotation of the circular pipe 1 and to make the movement of the circular pipe 1 in the direction of the pipe axis O smoother.
  • spiral grooved pipe manufacturing apparatus of the present disclosure by forming a circular pipe 1 having no seam at a position in the middle of the pipe shaft O, a spiral having no seam at a position in the middle of the pipe shaft O is formed. Grooved pipe 1b can be manufactured. According to the spiral grooved tube manufacturing apparatus of the present disclosure, by providing the circular tube holding device 40 having the holding roller 41, the spiral grooved tube 1b can be continuously manufactured without interrupting the molding process. Therefore, a long spiral grooved pipe 1b having no seam can be manufactured at low cost.
  • the heat exchanger of the present disclosure includes a seamless spiral grooved pipe 1b manufactured by the spiral grooved pipe manufacturing apparatus of the present disclosure, and a refrigerant pipe arranged along the spiral groove 1c of the spiral grooved pipe 1b. To be equipped with.
  • the heat exchanger of the present disclosure does not require a manufacturing process of joining a plurality of spiral grooved tubes 1b in series, so that the manufacturing cost can be reduced. Further, since there is no joint between the spiral grooved pipes 1b, there is no risk of fluid leaking from the joint.
  • the water-refrigerant heat exchanger 52 which is an example of the heat exchanger of the present disclosure, will be described.
  • the water-refrigerant heat exchanger 52 exchanges heat between the water flowing in the spiral grooved pipe 1b and the refrigerant flowing in the refrigerant pipe.
  • the heat exchangers of the present disclosure are not limited to those that exchange heat between water and a refrigerant.
  • the heat exchanger of the present disclosure may exchange heat between a heating brine and a refrigerant.
  • the heat pump device of the present disclosure includes the heat exchanger of the present disclosure.
  • FIG. 7 is a configuration diagram showing an embodiment of the heat pump device of the present disclosure.
  • the heat pump device 50 includes a refrigerant circuit in which a compressor 51, a water refrigerant heat exchanger 52, a decompression device 53, and an evaporator 54 are cyclically connected by a refrigerant pipe 55.
  • the compressor 51 circulates the refrigerant in the refrigerant circuit.
  • the water refrigerant heat exchanger 52 heats water by exchanging heat between the refrigerant compressed by the compressor 51 and water.
  • the refrigerant that has passed through the water-refrigerant heat exchanger 52 flows into the decompression device 53.
  • the depressurizing device 53 decompresses and expands the refrigerant.
  • the opening degree of the decompression device 53 can be adjusted.
  • the refrigerant that has passed through the depressurizing device 53 flows into the evaporator 54.
  • the evaporator 54 evaporates the refrigerant by exchanging heat between the outside air and the refrigerant.
  • the heat pump device 50 of the illustrated example further includes a fan 56 and a fan motor 57. When the fan motor 57 rotates the fan 56, the outside air flows so as to pass through the evaporator 54.
  • the tank unit 60 includes a hot water storage tank 61 for storing hot water heated by the water refrigerant heat exchanger 52 of the heat pump device 50.
  • the feed passage 62 has a first end connected to the lower part of the hot water storage tank 61 and a second end connected to the secondary side inflow port of the water refrigerant heat exchanger 52.
  • the return passage 63 has a first end connected to the secondary side outlet of the water refrigerant heat exchanger 52 and a second end connected to the upper part of the hot water storage tank 20.
  • the low-temperature water in the lower part of the hot water storage tank 61 flows into the water-refrigerant heat exchanger 52 through the feed passage 62.
  • the hot water heated by the water-refrigerant heat exchanger 52 flows into the upper part of the hot water storage tank 61 through the return passage 63.
  • the heat pump device 50 of the present disclosure may, for example, heat a heating brine instead of water.
  • FIG. 8 is a diagram showing a main part of the water refrigerant heat exchanger 52.
  • the water refrigerant heat exchanger 52 includes a spiral grooved water pipe 70, a first refrigerant pipe 71a, a second refrigerant pipe 71b, a third refrigerant pipe 71c, and a fourth refrigerant pipe 71d.
  • the spiral grooved water pipe 70 corresponds to a seamless spiral grooved pipe 1b manufactured by the spiral grooved pipe manufacturing apparatus of the present disclosure.
  • Four parallel spiral grooves 1c are provided on the outer periphery of the spiral grooved water pipe 70.
  • the first refrigerant pipe 71a, the second refrigerant pipe 71b, the third refrigerant pipe 71c, and the fourth refrigerant pipe 71d are spirally wound along the shape of the mountain valley of the corresponding spiral groove 1c.
  • Each of the refrigerant pipes 71a, 71b, 71c, and 71d is fitted in the corresponding spiral groove 1c.
  • the refrigerant pipes 71a, 71b, 71c, 71d and the corresponding spiral groove 1c may be fixed to each other by welding or brazing. In the present embodiment, it is advantageous in expanding the contact heat transfer area between the spiral grooved water pipe 70 and the refrigerant pipes 71a, 71b, 71c, 71d.
  • the refrigerant can be divided into a plurality of refrigerant pipes 71a, 71b, 71c, 71d and flowed, and the path design can be optimized. Further, since the contact between the adjacent refrigerant pipes 71a, 71b, 71c, 71d can be reliably prevented, heat leakage can be reliably prevented.
  • FIG. 9 is a flowchart showing an example of a method of manufacturing the spiral grooved pipe 1b by the spiral grooved pipe manufacturing apparatus of the present disclosure.
  • the circular tube 1 is arranged so that the circular tube 1 as a work passes through the circular tube holding device 40, the rotation driving device 10, and the opening surrounded by the plurality of processing rollers 2. ..
  • the holding roller 41 is pressed against the circular tube 1 by the circular tube holding device 40 to make the circular tube 1 non-rotatable.
  • step S3 after the machining roller 2 is pushed into the circular tube 1, the tool portion 9 is rotated by the rotation driving device 10 to form the spiral groove 1c in the circular tube 1.
  • step S4 after forming the spiral groove 1c having the required length, the processing roller 2 and the holding roller 41 are opened, and the work is taken out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
PCT/JP2020/011234 2020-03-13 2020-03-13 螺旋溝付管製造装置、熱交換器、及び、ヒートポンプ装置 WO2021181694A1 (ja)

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PCT/JP2020/011234 WO2021181694A1 (ja) 2020-03-13 2020-03-13 螺旋溝付管製造装置、熱交換器、及び、ヒートポンプ装置
JP2022505719A JPWO2021181694A1 (enrdf_load_stackoverflow) 2020-03-13 2020-03-13

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PCT/JP2020/011234 WO2021181694A1 (ja) 2020-03-13 2020-03-13 螺旋溝付管製造装置、熱交換器、及び、ヒートポンプ装置

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833142B1 (enrdf_load_stackoverflow) * 1969-03-27 1973-10-12
JPS62114731A (ja) * 1985-11-13 1987-05-26 コンパニ・アンデユストリエル・ダプリカシオン・テルミツク・セ・イ・ア・テ コルゲ−トパイプ製造装置
JP2002113516A (ja) * 2000-10-10 2002-04-16 Nisshin Steel Co Ltd 螺旋状の凹凸模様を付けた異形管の製造方法および製造装置
JP2002228370A (ja) * 2001-01-30 2002-08-14 Daikin Ind Ltd 熱交換器
JP2004511351A (ja) * 2000-10-26 2004-04-15 リージェント　テクノロジーズ　リミテッド スロット付き管状ライナにおけるスロット幅を縮小させる方法
JP2011224657A (ja) * 2010-04-02 2011-11-10 Daikin Industries Ltd 熱交換器の製造装置および製造方法
JP2017124431A (ja) * 2016-01-15 2017-07-20 三菱電機株式会社 螺旋溝付管製造装置及び螺旋溝付管製造方法
JP2018069318A (ja) * 2016-11-02 2018-05-10 株式会社富士機械工作所 ビート成形装置及びビート成形方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833142B1 (enrdf_load_stackoverflow) * 1969-03-27 1973-10-12
JPS62114731A (ja) * 1985-11-13 1987-05-26 コンパニ・アンデユストリエル・ダプリカシオン・テルミツク・セ・イ・ア・テ コルゲ−トパイプ製造装置
JP2002113516A (ja) * 2000-10-10 2002-04-16 Nisshin Steel Co Ltd 螺旋状の凹凸模様を付けた異形管の製造方法および製造装置
JP2004511351A (ja) * 2000-10-26 2004-04-15 リージェント　テクノロジーズ　リミテッド スロット付き管状ライナにおけるスロット幅を縮小させる方法
JP2002228370A (ja) * 2001-01-30 2002-08-14 Daikin Ind Ltd 熱交換器
JP2011224657A (ja) * 2010-04-02 2011-11-10 Daikin Industries Ltd 熱交換器の製造装置および製造方法
JP2017124431A (ja) * 2016-01-15 2017-07-20 三菱電機株式会社 螺旋溝付管製造装置及び螺旋溝付管製造方法
JP2018069318A (ja) * 2016-11-02 2018-05-10 株式会社富士機械工作所 ビート成形装置及びビート成形方法

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