WO2019082800A1 - 凝縮器、冷房システム、及び管継手 - Google Patents

凝縮器、冷房システム、及び管継手

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Publication number
WO2019082800A1
WO2019082800A1 PCT/JP2018/038952 JP2018038952W WO2019082800A1 WO 2019082800 A1 WO2019082800 A1 WO 2019082800A1 JP 2018038952 W JP2018038952 W JP 2018038952W WO 2019082800 A1 WO2019082800 A1 WO 2019082800A1
Authority
WO
WIPO (PCT)
Prior art keywords
condenser
pipe
flow path
pipe joint
header
Prior art date
Application number
PCT/JP2018/038952
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
博 猪倉
Original Assignee
博 猪倉
タム ウェン コン
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 博 猪倉, タム ウェン コン filed Critical 博 猪倉
Priority to CN201890000351.4U priority Critical patent/CN212179281U/zh
Publication of WO2019082800A1 publication Critical patent/WO2019082800A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements

Definitions

  • the present invention relates to a condenser, a cooling system, and a pipe joint, and more particularly to a condenser having a pipe through which a refrigerant flows, a cooling system, and a pipe joint.
  • a cooling system using an vapor compression refrigeration cycle and having an outdoor unit and an indoor unit is widely used.
  • the refrigerant flowing in as a gas is compressed by a compressor, sent to a condenser (outdoor heat exchanger), and condensed in the condenser.
  • the refrigerant that has become a liquid is depressurized by a pressure reducing unit such as a capillary or an expansion valve, and is sent to the indoor unit.
  • Patent Document 1 discloses the structure of an additional condenser to be added between the existing condenser and the expansion valve.
  • An object of the present invention is to provide a condenser, a cooling system, and a pipe joint that can improve the flow of refrigerant.
  • a condenser is attached to a header, a core connected to the header, and a header, and a pipe joint to which an external pipe is connected. And a grooved portion in which a convex portion having a spiral shape is formed along the inner surface is provided on a part of the inner surface of the pipe joint portion.
  • the pipe joint portion is separated from the first flow path provided on the header portion side and an end portion adjacent to the first flow path and closer to the header portion than the first flow path.
  • a second flow path provided at a position, the cross-sectional area of the first flow path being smaller than the cross-sectional area of the second flow path, and the rib portion faces the first flow path It is formed in the inner surface of the tube fitting part which does not have it, and is not formed in the inner surface of the tube fitting part facing the 2nd flow path.
  • a cooling system having a compressor, a main condenser connected to the compressor, a pressure reducing portion, and an evaporator is a secondary condensing device disposed between the main condenser and the pressure reducing portion.
  • the secondary condenser is the condenser according to any of the above, and the joint portion is connected to a pipe through which the refrigerant flowing out of the main condenser passes.
  • the pipe joint is a pipe joint attached to the header portion of the condenser and used to connect the header portion and the external pipe, wherein a part of the inner surface is attached to the inner surface It has a groove portion in which a convex portion in a spiral shape is formed.
  • a first flow path provided on the mounting end side attached to the header portion, and a position adjacent to the first flow path and farther from the mounting end than the first flow path
  • the cross-sectional area of the first flow passage is smaller than the cross-sectional area of the second flow passage
  • the grooved portion is formed on the inner surface facing the first flow passage. And is not formed on the inner surface facing the second flow path.
  • a condenser, a cooling system, and a pipe fitting capable of improving the flow of refrigerant can be provided.
  • FIG. 1 shows the structure of the cooling system in one of embodiment of this invention. It is a perspective view which shows an example of a subcondenser. It is a perspective view which shows a 1st pipe joint part. It is a sectional side view which shows a 1st pipe joint part. It is a sectional side view which shows only the pipe part which comprises a part of 1st pipe joint part. It is a sectional side view which shows the pipe part in one modification of this Embodiment. It is a sectional side view which shows the pipe part in the other modification of this Embodiment.
  • FIG. 1 is a diagram showing the configuration of a cooling system according to an embodiment of the present invention.
  • solid arrows mainly indicate the flow direction of the liquid phase refrigerant
  • broken arrows mainly indicate the flow direction of the gas phase refrigerant.
  • the cooling system 1 includes an evaporator (indoor heat exchanger) 3 in the indoor unit 2, an outdoor unit 4, and a pipe 5 through which a refrigerant flows.
  • the cooling system 1 utilizes a vapor compression refrigeration cycle, and is used, for example, for indoor cooling.
  • the refrigerant for example, hydrofluorocarbon or the like is used, but it is not limited to this and may be other.
  • the outdoor unit 4 feeds the refrigerant of the liquid phase to the evaporator 3 through the pipe 5.
  • the outdoor unit 4 includes a compressor 6, a main condenser (outdoor heat exchanger) 7, a receiver 8, and a pressure reducing unit 9 in the order in which the refrigerant flows.
  • the compressor 6 compresses the refrigerant downstream.
  • the refrigerant circulates in the cooling system 1.
  • the main condenser 7 dissipates the heat of the compressed refrigerant to the fluid outside the main condenser 7, and cools and condenses the refrigerant. This increases the volume of the liquid phase refrigerant and reduces the volume of the gas phase refrigerant.
  • the receiver 8 mainly the liquid phase refrigerant flowing through the outdoor unit is stored.
  • the receiver 8 causes the liquid phase refrigerant to flow out to the pressure reducing unit 9 side of the refrigeration cycle.
  • the decompression unit 9 is, for example, a capillary.
  • the pressure reducing unit 9 may be, for example, an electromagnetic pressure reducing valve.
  • the mainly liquid-phase refrigerant that has passed through the pressure reducing unit 9 flows out of the outdoor unit 4.
  • the refrigerant that has flowed out flows into the evaporator 3 via the pipe 5.
  • the cooling system 1 further includes a sub-condenser 10 different from the main condenser 7.
  • the sub-condenser 10 is attached to the outdoor unit 4.
  • the sub-condenser 10 is disposed between the main condenser 7 and the pressure reducing unit 9.
  • the sub-condenser 10 is connected with a pipe 5 connected to the outlet of the refrigerant of the main condenser 7 and a pipe 5 connected to the inlet of the refrigerant of the receiver 8.
  • the sub-condenser 10 is attached to the outdoor unit 4.
  • the sub-condenser 10 can be retrofitted (additionally installed) to an existing cooling system (existing cooling system) having only the main condenser 7 as a condenser.
  • the sub-condenser 10 may be configured to be additionally provided inside the outdoor unit 4.
  • the cooling system may be provided with the main condenser 7 and the sub-condenser 10 from the beginning.
  • FIG. 2 is a perspective view showing an example of the sub-condenser 10. As shown in FIG.
  • the sub-condenser 10 includes a core portion 11, header portions 13 and 14 connected to both sides of the core portion 11, a first pipe joint portion 50, and a second pipe joint portion 30.
  • the first pipe joint portion 50 is a pipe joint attached to the header portion 13 so as to protrude from a part of the header portion 13.
  • the second pipe joint portion 30 is a pipe joint attached to the header portion 13 so as to protrude from a part of the header portion 13.
  • the 1st pipe joint part 50 may be attached to one header part 13, and the 2nd pipe joint part 30 may be attached to the other header part 14.
  • the first pipe joint portion 50 is connected to a pipe 5 through which the refrigerant flowing out of the main condenser 7 passes. That is, the external pipe 5 is connected to the first pipe joint portion 50.
  • the second pipe joint portion 30 is connected to the pipe 5 through which the refrigerant flowing into the receiver 8 passes, that is, the pipe 5 through which the refrigerant flowing into the pressure reducing portion 9 passes.
  • the main condenser 7 is connected to the first pipe joint portion 50 through the pipe 5, and passes through the header portions 13 and 14 and the core portion 11 from the second pipe joint portion 30 through the pipe 5 to the receiver 8.
  • a refrigerant bypass path is configured to be connected to the
  • FIG. 3 is a perspective view showing the first pipe joint portion 50.
  • FIG. 4 is a side sectional view showing the first pipe joint portion 50.
  • FIG. 5 is a side sectional view showing only the pipe portion 61 which constitutes a part of the first pipe joint portion 50. As shown in FIG.
  • the first pipe joint portion 50 has a pipe attachment portion 51 having an external thread 55 and a pipe portion 61.
  • the pipe mounting portion 51 and the pipe portion 61 which are formed as separate members, are connected to each other by, for example, welding or the like to constitute one first pipe joint portion 50.
  • the pipe mounting portion 51 is connected to a pipe of a refrigerant having an internal thread at an end to be connected.
  • the pipe portion 61 is attached to the header portion 13.
  • the first pipe joint portion 50 may not be a combination of a plurality of members but may be formed of a single member.
  • the pipe joint part 50 does not need to have an external thread, and may be connected to piping of a refrigerant
  • the pipe portion 61 has, for example, a substantially cylindrical shape. As shown in FIG. 4, the pipe portion 61 has a first attachment portion 62 provided at the end 62 a on the header portion 13 side and a second attachment portion 63 provided at the end 63 a on the pipe attachment portion 51 side. And.
  • the first attachment portion 62 and the second attachment portion 63 are each configured to be smaller in diameter than the other portions of the pipe portion 61.
  • the pipe portion 61 of the first pipe joint portion 50 is welded to the header portion 13 in a state where the first mounting portion 62 is inserted into the mounting hole provided in the header portion 13.
  • the pipe portion 61 is welded to the pipe mounting portion 51 in a state where the second mounting portion 63 is inserted into the fitting hole of the pipe mounting portion 51.
  • the first mounting portion 62 may be a male screw, and the first mounting portion 62 may be screwed into the screw so that the pipe portion 61 may be mounted to the header portion 13.
  • the second mounting portion 63 may be a male screw, and the second mounting portion 63 may be screwed into the screw so that the pipe portion 61 may be mounted to the pipe mounting portion 51.
  • the pipe portion 61 of the first pipe joint portion 50 is adjacent to the first flow path L1 provided on the header portion 13 side and the first flow path L1 and is the first And a second flow passage L2 provided at a position away from the end 62a on the header 13 side of the flow passage L1.
  • the first flow path L1 and the second flow path L2 have cylindrical inner surfaces 65 and 66, respectively.
  • the inner surface 65 of the first pipe joint portion 50 faces the first flow path L1 to constitute the first flow path L1
  • the inner surface 66 of the first wound joint portion 50 is the second flow
  • a second flow passage L2 is configured to face the passage L2.
  • the first flow path L1 and the second flow path L2 are substantially concentric as viewed in the direction perpendicular to the flow direction of the refrigerant, and are in communication with each other.
  • the inner diameter D1 of the inner surface 65 facing the first flow passage L1 is smaller than the inner diameter D2 of the inner surface 66 facing the second flow passage L2. That is, the cross sectional area of the first flow passage L1 is smaller than the cross sectional area of the second flow passage L2.
  • the inner diameters D1 and D2 are substantially uniform in each of the first flow path L1 and the second flow path L2.
  • the cross-sectional area of the flow path of the refrigerant suddenly changes to a small degree, so that the condensation promoting function of the refrigerant flowing in the first pipe joint portion 50 can be obtained. .
  • the cross-sectional area of the flow passage may be changed gently.
  • a grooved portion 81 is provided on part of the inner surface of the first pipe joint portion 50.
  • the groove portion 81 is a portion where a convex portion in a spiral shape is formed along the inner surface of the first pipe joint portion 50.
  • the groove portion 81 is a portion where a rifle-like groove is formed.
  • the streak portion 81 is illustrated in a simplified structure, and the number of streaks of the streak portion 81, the interval, and the like are not limited to those described in the drawings.
  • the grooved portion 81 is formed on the inner surface 65 facing the first flow passage L1, and is not formed on the inner surface 66 facing the second flow passage L2. That is, the grooved portion 81 is formed in the vicinity of the end portion 62 a on the side of the header portion 13 where the refrigerant flows out from the first pipe joint portion 50 to the header portion 13.
  • the refrigerant flowing out of the first pipe joint portion 50 to the sub-condenser 10 passes through the groove portion 81 and flows out. Therefore, the flow of the refrigerant becomes smooth.
  • the smooth flow of the refrigerant makes it possible to reduce the load on the compressor 6 and the like, to improve the efficiency of the cooling system and to contribute to energy saving.
  • the structure of the pipe part 61 of the 1st pipe joint part 50 is not restricted to the structure of this Embodiment, A various deformation
  • FIG. 6 is a side sectional view showing a pipe section 161 in a modification of the present embodiment.
  • the pipe portion 161 has the same configuration as the pipe portion 61 of the above-described embodiment except for the portion where the groove portion 81 is provided.
  • the grooved portion 81 is provided on the entire inner surface of the pipe portion 161. That is, the stripe portion 81 is provided on both the inner surface 65 of the first flow passage L1 and the inner surface 66 of the second flow passage L2. Even with such a structure, the flow of the refrigerant can be smoothed as well.
  • the grooved portion 81 is provided on all of the inner surface 65 of the first flow passage L1 and a portion of the inner surface 66 of the second flow passage L2 close to the end portion 62a on the header portion 13 side. Good. Further, the stripe portion 81 may be partially provided only on the portion of the inner surface 65 of the first flow path L1 near the end portion 62a on the header portion 13 side.
  • FIG. 7 is a side sectional view showing a pipe portion 261 in another modified example of the present embodiment.
  • the pipe portion 261 has a third flow path L3 in addition to the first flow path L1 and the second flow path L2 farther from the end portion 62a closer to the header portion 13 than the first flow path L1. is there.
  • the third flow passage L3 is provided next to the second flow passage L2 and at a position away from the end 62a on the header 13 side of the second flow passage L2.
  • the third flow path L3 has a cylindrical inner surface 67.
  • the inner surface 67 of the first wound joint portion 50 faces the third flow passage L3 and constitutes a third flow passage L3.
  • the first flow path L1, the second flow path L2, and the third flow path L3 are arranged to be substantially concentric with each other as viewed in the direction perpendicular to the direction in which the refrigerant flows.
  • the inner diameter D3 of the inner surface 67 facing the third flow passage L3 is larger than the inner diameter D2 of the inner surface 66 facing the second flow passage L2. That is, the cross-sectional area of the third flow path L3 is smaller than the cross-sectional area of the second flow path L2.
  • the cross-sectional area of the flow path of the refrigerant suddenly changes to a small degree, so that the condensation promoting function of the refrigerant flowing in the first pipe joint portion 50 can be obtained. .
  • the cross-sectional area of the flow path may be changed gently.
  • the grooved portion 81 is formed on the inner surface 65 facing the first channel L1, and the inner surface facing the second channel L2 and the third channel L3. It is not formed at 67. Even in the structure in which the grooved portion 81 is formed as described above, the flow of the refrigerant can be smoothed similarly.
  • Condensers such as the above-described sub-condensers are not limited to those used in cooling systems. For example, it may be used in a refrigeration cycle used for other applications.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
PCT/JP2018/038952 2017-10-24 2018-10-19 凝縮器、冷房システム、及び管継手 WO2019082800A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201890000351.4U CN212179281U (zh) 2017-10-24 2018-10-19 冷凝器、冷气系统、以及管接头

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-205170 2017-10-24
JP2017205170A JP7211606B2 (ja) 2017-10-24 2017-10-24 凝縮器、冷房システム、及び管継手

Publications (1)

Publication Number Publication Date
WO2019082800A1 true WO2019082800A1 (ja) 2019-05-02

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Country Link
JP (1) JP7211606B2 (zh)
CN (1) CN212179281U (zh)
TW (1) TW201925702A (zh)
WO (1) WO2019082800A1 (zh)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0225091Y2 (zh) * 1984-08-08 1990-07-10
JPH06194004A (ja) * 1992-12-21 1994-07-15 Nippondenso Co Ltd 熱交換器
JPH10103813A (ja) * 1996-10-01 1998-04-24 Sanyo Electric Co Ltd 凝縮器
JPH10170101A (ja) * 1996-12-03 1998-06-26 Denso Corp 積層型熱交換器
JPH10318628A (ja) * 1997-05-16 1998-12-04 Hitachi Ltd 冷媒分配器
JP2000097519A (ja) * 1998-03-12 2000-04-04 Noriyuki Yamauchi 空調装置及びそれに用いる凝縮器
JP2003342984A (ja) * 2002-05-24 2003-12-03 Sekisui Chem Co Ltd 排水管配管システム
JP2008513709A (ja) * 2004-09-21 2008-05-01 インペリアル・カリッジ・イノベイションズ・リミテッド 導管

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0225091Y2 (zh) * 1984-08-08 1990-07-10
JPH06194004A (ja) * 1992-12-21 1994-07-15 Nippondenso Co Ltd 熱交換器
JPH10103813A (ja) * 1996-10-01 1998-04-24 Sanyo Electric Co Ltd 凝縮器
JPH10170101A (ja) * 1996-12-03 1998-06-26 Denso Corp 積層型熱交換器
JPH10318628A (ja) * 1997-05-16 1998-12-04 Hitachi Ltd 冷媒分配器
JP2000097519A (ja) * 1998-03-12 2000-04-04 Noriyuki Yamauchi 空調装置及びそれに用いる凝縮器
JP2003342984A (ja) * 2002-05-24 2003-12-03 Sekisui Chem Co Ltd 排水管配管システム
JP2008513709A (ja) * 2004-09-21 2008-05-01 インペリアル・カリッジ・イノベイションズ・リミテッド 導管

Also Published As

Publication number Publication date
CN212179281U (zh) 2020-12-18
JP2019078449A (ja) 2019-05-23
TW201925702A (zh) 2019-07-01
JP7211606B2 (ja) 2023-01-24

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