EP4134601A1 - Dispositif à cycle de réfrigération - Google Patents

Dispositif à cycle de réfrigération Download PDF

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Publication number
EP4134601A1
EP4134601A1 EP20930077.1A EP20930077A EP4134601A1 EP 4134601 A1 EP4134601 A1 EP 4134601A1 EP 20930077 A EP20930077 A EP 20930077A EP 4134601 A1 EP4134601 A1 EP 4134601A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
flow inlet
refrigerant
heat transfer
outlet portion
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20930077.1A
Other languages
German (de)
English (en)
Other versions
EP4134601A4 (fr
Inventor
Daisuke Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP4134601A1 publication Critical patent/EP4134601A1/fr
Publication of EP4134601A4 publication Critical patent/EP4134601A4/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F25B2313/0292—Control issues related to reversing valves
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
    • 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
    • F25B2339/00—Details of evaporators; Details of 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • 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
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • 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
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2507—Flow-diverting valves
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves

Definitions

  • Upper flow inlet/outlet portion 6A is disposed above lower flow inlet/outlet portion 6B. Upper flow inlet/outlet portion 6A is connected to the fourth port of four-way valve 2 through an extension pipe. Lower flow inlet/outlet portion 6B is connected to expansion valve 4B through an extension pipe.
  • Each of the plurality of upper heat transfer tubes 61A is disposed above each of the plurality of lower heat transfer tubes 61B.
  • Each of the plurality of upper heat transfer tubes 61A is disposed above the center of indoor heat exchanger 6, for example, in up-down direction A.
  • Each of the plurality of lower heat transfer tubes 61B is disposed below the center of indoor heat exchanger 6, for example, in up-down direction A.
  • Upper heat transfer tubes 61A and lower heat transfer tubes 61B each extend in direction B intersecting with up-down direction A.
  • the number of groove portions 64A is larger than the number of groove portions 64B.
  • the width of each groove portion 64A in the circumferential direction is smaller than the width of each groove portion 64B in the circumferential direction.
  • the relation of magnitude of the area expansion ratio between third inner circumferential surface 63A of upper heat transfer tube 61A and fourth inner circumferential surface 63B of lower heat transfer tube 61B is implemented by the relation of magnitude of the number of threads between groove portions 64A and groove portions 64B.
  • the non-azeotropic refrigerant mixture flows through outdoor heat exchanger 3 in order of upper flow inlet/outlet portion 3A, the plurality of upper heat transfer tubes 31A, the plurality of lower heat transfer tubes 31B, and lower flow inlet/outlet portion 3B, and then, condenses.
  • a gas-phase non-azeotropic refrigerant mixture mainly flows through upper flow inlet/outlet portion 3A and the plurality of upper heat transfer tubes 31A.
  • a liquid-phase non-azeotropic refrigerant mixture mainly flows through the plurality of lower heat transfer tubes 31B and lower flow inlet/outlet portion 3B.
  • each refrigerant When each refrigerant is in a liquid-phase state, the relation of magnitude of the density between each refrigerant and the incompatible oil varies between when each refrigerant is at a temperature of 10 °C and when each refrigerant is at a temperature of 60 °C.
  • the density of each refrigerant is higher than the density of the incompatible oil.
  • outdoor heat exchanger 6 configured as a corrugated heat exchanger includes: an upper header 65A (the third header) connected to upper flow inlet/outlet portion 6A (the third flow inlet/outlet portion); a lower header 65B (the fourth header) connected to lower flow inlet/outlet portion 6B (the second flow inlet/outlet portion); a plurality of heat transfer tubes 66 connected between upper header 65A and lower header 65B and extending in up-down direction A; and a plurality of corrugated fins 67.
  • Upper header 65A is disposed above lower header 65B.
  • Upper header 65A is connected to each of the upper ends of the plurality of heat transfer tubes 66.
  • Upper header 35A and upper header 65A are similar in configuration to upper heat transfer tube 31A and upper heat transfer tube 61A, respectively, each as the first tube portion shown in Figs. 3 , 5 , and 7 .
  • Lower header 35B and lower header 65B are similar in configuration to lower heat transfer tube 31B and lower heat transfer tube 61B, respectively, each as the second tube portion shown in Figs. 4 , 6 and 8 .
  • the inner circumferential surface of upper heat transfer tube 61A may be higher in area expansion ratio than the inner circumferential surface of lower heat transfer tube 61B.
  • the inner circumferential surface of upper heat transfer tube 31A may be equal in area expansion ratio to the inner circumferential surface of lower heat transfer tube 31B.
  • Indoor temperature control unit 170 includes an indoor heat exchanger 171, a fan (not shown) serving to deliver indoor air to indoor heat exchanger 171, and a flow rate control valve 172 for controlling the flow rate of the second refrigerant.
  • Indoor heat exchanger 171 exchanges heat between the second refrigerant and indoor air.
  • the plurality of heat transfer plates 71 are provided with: their respective upper through holes contiguous to each other in direction B and located on the relatively upper side; and their respective lower through holes contiguous to each other in direction B and disposed below the upper through holes.
  • an upper distribution region 72A extending in direction B and contiguous to each first flow path H1 is provided inside the plurality of upper through holes of intermediate heat exchanger 7.
  • a lower distribution region 72B extending in direction B and contiguous to each first flow path H1 is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP20930077.1A 2020-04-07 2020-04-07 Dispositif à cycle de réfrigération Pending EP4134601A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/015651 WO2021205536A1 (fr) 2020-04-07 2020-04-07 Dispositif à cycle de réfrigération

Publications (2)

Publication Number Publication Date
EP4134601A1 true EP4134601A1 (fr) 2023-02-15
EP4134601A4 EP4134601A4 (fr) 2023-05-24

Family

ID=78023057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20930077.1A Pending EP4134601A4 (fr) 2020-04-07 2020-04-07 Dispositif à cycle de réfrigération

Country Status (3)

Country Link
EP (1) EP4134601A4 (fr)
JP (1) JP7341326B2 (fr)
WO (1) WO2021205536A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023095260A1 (fr) * 2021-11-25 2023-06-01 三菱電機株式会社 Climatiseur

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06281293A (ja) * 1993-03-31 1994-10-07 Toshiba Corp 熱交換器
JPH06307738A (ja) * 1993-04-21 1994-11-01 Hitachi Ltd 非共沸混合冷媒用凝縮器
JP2001221537A (ja) 2000-02-14 2001-08-17 Sanyo Electric Co Ltd 冷却装置
DE102012203734A1 (de) 2012-03-09 2013-09-12 Kiekert Ag Schloss für eine Klappe oder Tür
JP6281293B2 (ja) 2014-01-22 2018-02-21 株式会社リコー 画像形成装置
EP3115730B1 (fr) * 2014-03-07 2020-05-27 Mitsubishi Electric Corporation Dispositif à cycle de réfrigération
JPWO2015140887A1 (ja) 2014-03-17 2017-04-06 三菱電機株式会社 冷凍サイクル装置
JPWO2015140886A1 (ja) * 2014-03-17 2017-04-06 三菱電機株式会社 冷凍サイクル装置
JP2017116242A (ja) 2015-12-26 2017-06-29 株式会社コロナ ヒートポンプ装置
JP7069298B2 (ja) 2018-04-05 2022-05-17 三菱電機株式会社 空気調和装置
CN115183507A (zh) 2018-06-29 2022-10-14 三菱电机株式会社 制冷循环装置

Also Published As

Publication number Publication date
JP7341326B2 (ja) 2023-09-08
JPWO2021205536A1 (fr) 2021-10-14
WO2021205536A1 (fr) 2021-10-14
EP4134601A4 (fr) 2023-05-24

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