EP1684033A1 - Air conditioner outdoor unit, air conditioner, and compressor unit - Google Patents

Air conditioner outdoor unit, air conditioner, and compressor unit Download PDF

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Publication number
EP1684033A1
EP1684033A1 EP04773081A EP04773081A EP1684033A1 EP 1684033 A1 EP1684033 A1 EP 1684033A1 EP 04773081 A EP04773081 A EP 04773081A EP 04773081 A EP04773081 A EP 04773081A EP 1684033 A1 EP1684033 A1 EP 1684033A1
Authority
EP
European Patent Office
Prior art keywords
port
compressor
heat exchanger
outdoor unit
switching valve
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.)
Withdrawn
Application number
EP04773081A
Other languages
German (de)
English (en)
French (fr)
Inventor
Yukimasa c/o DAIKIN INDUSTRIES LTD. YANO
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP1684033A1 publication Critical patent/EP1684033A1/en
Withdrawn legal-status Critical Current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
    • 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
    • F25B1/00—Compression machines, plants or systems with non-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
    • F25B41/00—Fluid-circulation 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements

Definitions

  • the present invention relates to an air-conditioning outdoor unit, an air conditioner, and a compressor unit.
  • an air conditioner is disposed with a compressor 51, a four-way switching valve 52, an outdoor heat exchanger 53, an expansion valve (decompression mechanism) 54, and an indoor heat exchanger 55.
  • a pair of primary ports 56a and 56b of the four-way switching valve 52 is connected to a discharge port and an intake port of the compressor 51.
  • One secondary port 57a of a pair of secondary ports 57a and 57b of the four-way switching valve 52 is connected to a gas pipe 58.
  • the gas pipe 58 is connected to the indoor heat exchanger 55 via a gas closing valve 59.
  • the other secondary port 57b of the pair of secondary ports 57a and 57b of the four-way switching valve 52 is connected to the outdoor heat exchanger 53.
  • the expansion valve 54 is connected to the outdoor heat exchanger 53.
  • the expansion valve 54 and the indoor heat exchanger 55 are connected via a liquid closing valve 60.
  • An accumulator 61 is disposed between the four-way switching valve 52 and the intake port of the compressor 51
  • an air-conditioning outdoor unit is configured as a result of the compressor 51, the four-way switching valve 52, the outdoor heat exchanger 53, the expansion valve 54 and the like being housed inside an outdoor unit casing (not shown).
  • the gas closing valve 59 and the liquid closing valve 60 are disposed close to the air-conditioning outdoor unit and function as external connection ports for connecting to an indoor unit.
  • the refrigerant discharged from the compressor 51 sequentially flows through the four-way switching valve 52, the outdoor heat exchanger 53, the expansion valve 54 and the indoor heat exchanger 55, and the outdoor heat exchanger 53 functions as a condenser and the indoor heat exchanger 55 functions as an evaporator such that the room interior can be cooled.
  • the compressor 51, the four-way switching valve 52, the outdoor heat exchanger 53, the expansion valve 54 and the like are housed inside the outdoor unit casing of the air-conditioning outdoor unit. For this reason, vibration and noise of the compressor 51 and the like are transmitted to the outdoor unit casing via pipes and the like, and leak to the outside from the outdoor unit casing.
  • air-conditioning outdoor units are known where a vibration absorbing mechanism comprising a trap portion or a loop portion is disposed in pipes laid inside the outdoor unit casing (e.g., see Patent Document 1 and Patent Document 2).
  • a vibration absorbing mechanism 63 is disposed between the four-way switching valve 52 and the compressor 51, and alleviates the vibration and noise of the compressor 51 and the like.
  • JP-A Japanese Patent Application Publication No. 8-14705 (FIG. 1)
  • JP-A Japanese Patent Application Publication No. 9-89417 (FIG. 1)
  • the vibration absorbing mechanism 63 when the vibration absorbing mechanism 63 is disposed, the number of assembly man-hours is large and the outdoor unit has poor assemblability (productivity) because it is necessary to dispose the trap portion or the loop portion.
  • the refrigerant intake path of the compressor 51 becomes longer as a result of disposing the vibration absorbing mechanism 63, which leads to an increase in pressure loss at the intake side, and the COP (Coefficient of Performance) drops.
  • the vibration absorbing mechanism 63 is disposed between the four-way switching valve 52 and the compressor 51, the vibration absorbing mechanism 63 becomes disposed at a site far from a pipe fixing portion such as the connection port of the outdoor unit casing and the outdoor heat exchanger. For this reason, even if the vibration and noise of the compressor 51 are reduced by the vibration absorbing mechanism 63, the vibration and noise generated between the vibration absorbing mechanism 63 and the pipe fixing portion such as the connection port cannot be reduced, and the vibration and noise leaking from the outdoor unit casing cannot be efficiently reduced.
  • the present invention has been made in order to address these conventional drawbacks, and it is an object thereof to provide an air-conditioning outdoor unit, an air conditioner and a compressor unit that can be made compact and reduce noise, and which have excellent assemblability.
  • a pair of primary ports of a four-way switching valve is respectively connected to a discharge port and an intake port of a compressor, and flexible pipes are connected to a pair of secondary ports of the four-way switching valve.
  • the vibration and noise of the compressor are damped by the flexible pipes, and it becomes difficult for them to be transmitted close to objects connected to the opposite side of the secondary ports of the flexible pipes.
  • the air-conditioning outdoor unit and the air conditioner can be made compact and reduce noise. Further, because flexible pipes are used, the air-conditioning outdoor unit has excellent assemblability
  • the flexible pipes become disposed in positions close to pipe fixing portions that are the outdoor heat exchanger and the external connection port in an outdoor unit casing.
  • the vibration and noise from the compressor and the like can be absorbed at portions close to the pipe fixing portions in the outdoor unit casing, and vibration and noise leaking to the outside via the outdoor unit casing can be more reliably reduced.
  • an air conditioner that is quiet with little vibration and noise can be provided.
  • the pair of primary ports of the four-way switching valve is directly connected to the discharge port and the intake port of the compressor without intervening a vibration absorbing mechanism such as a trap portion or a loop portion, it becomes unnecessary to dispose space for the vibration absorbing mechanism. Consequently, the overall air-conditioning outdoor unit can be made compact. Moreover, because a vibration absorbing mechanism is not disposed, the number of assembly man-hours is reduced by that much, and a reduction in cost and an improvement in assemblability (productivity) are realized. Moreover, as a result of a vibration absorbing mechanism not being disposed, the intake path of the compressor becomes shorter, an increase in pressure loss at the intake side can be suppressed, and the COP is improved.
  • FIG. 1 shows an air conditioner disposed with the air-conditioning outdoor unit pertaining to the invention.
  • the air conditioner is disposed with a compressor 1, a four-way switching valve 2, an outdoor heat exchanger 3, a decompression mechanism (expansion valve) 4, and an indoor heat exchanger 5.
  • a pair of primary ports 6a and 6b of the four-way switching valve 2 is connected to a discharge port 1a and an intake port 1b of the compressor 1. That is, the discharge port 1a of the compressor 1 and the one primary port 6a of the four-way switching valve 2 are connected via a discharge pipe 8.
  • the intake port 1b of the compressor 1 and the other primary port 6b of the four-way switching valve 2 are connected via an intake pipe 10, on which an accumulator 9 is disposed.
  • the intake pipe 10 comprises a compressor side pipe 10a and a switching valve side pipe 10b.
  • the compressor side pipe 10a connects the accumulator 9 and the intake port 1b of the compressor 1.
  • the switching valve side pipe 10b connects the accumulator 9 and the other primary port 6b of the four-way switching valve 2.
  • One secondary port 7a of a pair of secondary ports 7a and 7b of the four-way switching valve 2 is connected to an external connection port 11.
  • the other secondary port 7b is connected to an outdoor heat exchanger 3. That is, the one secondary port 7a of the four-way switching valve 2 is connected to a first refrigerant pipe 12 to which the external connection port 11 is coupled.
  • the other secondary port 7b of the four-way switching valve 2 is connected to the outdoor heat exchanger 3 via a second refrigerant pipe 13.
  • the outdoor heat exchanger 3 and the expansion valve 4 are connected via a third refrigerant pipe 14.
  • the expansion valve 4 is connected to the indoor heat exchanger 5 via an external connection port 15.
  • a fourth refrigerant pipe 16 coupled to the indoor heat exchanger 5 is connected to the external connection port 11.
  • the air-conditioning outdoor unit is configured as a result of the compressor 1, the four-way switching valve 2, the outdoor heat exchanger 3, the expansion valve 4 and the like being housed inside an outdoor unit casing (not shown).
  • An air-conditioning indoor unit is configured as a result of the indoor heat exchanger 5 and the like being housed inside an unillustrated indoor unit casing.
  • the one external connection port 11 is configured by a gas closing valve 17 (see FIG. 2).
  • the other external connection port 15 is configured by a liquid closing valve 18.
  • the gas closing valve 17 and the liquid closing valve 18 are attached to the outdoor unit casing such that they are exposed to the outside of the outdoor unit casing.
  • a first flexible pipe 20 is disposed between the one secondary port 7a of the four-way switching valve 2 and the one external connection port 11. That is, the first flexible pipe 20 is intervened the first refrigerant pipe 12.
  • a second flexible pipe 21 is disposed between the other secondary port 7b of the four-way switching valve 2 and the outdoor heat exchanger 3. That is, the second flexible pipe 21 is intervened in the second refrigerant pipe 13.
  • the accumulator 9 is attached to a casing 22 of the compressor 1.
  • the four-way switching valve 2 is disposed above the accumulator 9.
  • the first flexible pipe 20 intervened in the first refrigerant pipe 12 and the second flexible pipe 21 intervened in the second refrigerant pipe 13 are linearly arranged along the vertical direction adjacent to the accumulator 9.
  • the first refrigerant pipe 12 comprises a pipe 12a (e.g., a stainless steel pipe) at the switching valve side projecting from the four-way switching valve 2, the first flexible pipe 20, and a pipe 12b (e.g., a stainless steel pipe) connected to the external connection port 11.
  • the second refrigerant pipe 13 comprises a pipe 13a (e.g., a stainless steel pipe) at the switching valve side projecting from the four-way switching valve 2, the second flexible pipe 21, and a pipe 13b (e.g., a stainless steel pipe) connected to the outdoor heat exchanger 3.
  • a pipe 13a e.g., a stainless steel pipe
  • a pipe 13b e.g., a stainless steel pipe
  • the flexible pipes 20 and 21 are configured by metal pipes 23 (e.g., stainless steel pipes) formed in bellows and outer cover members 24 that cover the metal pipes 23.
  • a fiber material such as KEVLAR (aromatic polyamide) is used for the outer cover members 24.
  • the flexible pipes 20 and 21 can damp (reduce) vibration due to their flexibility. Because the flexible pipes 20 and 21 have this configuration, it is difficult for them to be bent and used, and it is preferable for them to be used linearly (straight pipes) as shown in FIG. 2.
  • the first flexible pipe 20 is disposed in the vicinity of the gas closing valve 17 that configures the external connection port 11.
  • the refrigerant discharged from the compressor 1 sequentially flows through the four-way switching valve 2, the outdoor heat exchanger 3, the expansion valve 4 and the indoor heat exchanger 5.
  • the outdoor heat exchanger 3 functions as a condenser
  • the indoor heat exchanger 5 functions as an evaporator, whereby the room interior can be cooled.
  • the first flexible pipe 20 is disposed between the one secondary port 7a and the external connection port 11, and the second flexible pipe 21 is disposed between the other secondary port 7b and the outdoor heat exchanger 3.
  • the first flexible pipe 20 can be disposed in a position close to the pipe fixing portion that is the external connection port 11
  • the second flexible pipe 21 can be disposed in a position close to the pipe fixing portion that is the outdoor heat exchanger 3 in the outdoor unit casing.
  • vibration and noise from the compressor 1 and the like can be absorbed at the portions close to the pipe fixing portions in the outdoor unit casing, vibration and noise leaking to the outside via the outdoor unit casing are reduced, and the air conditioner becomes quiet with little vibration and noise.
  • the metal pipes 23 of the flexible pipes 20 and 21 are covered by the outer cover members 24 comprising fiber material (KEVLAR fiber), and the flexible pipes 20 and 21 are excellent in terms of strength and exhibit an excellent damping effect.
  • the pair of primary ports 6a and 6b of the four-way switching valve 2 is directly connected to the discharge port 1a and the intake port 1b of the compressor 1 without intervening a vibration absorbing mechanism such as a trap portion or a loop portion. For this reason, it is not necessary to dispose space for the vibration absorbing mechanism, and the overall air-conditioning outdoor unit can be made compact. Moreover, because a vibration absorbing mechanism is not disposed, the number of assembly man-hours is reduced by that much, and a reduction in cost and an improvement in assemblability (productivity) are realized. Moreover, as a result of a vibration absorbing mechanism not being disposed, the intake path of the compressor becomes shorter, an increase in pressure loss at the intake side can be suppressed, and the COP is improved. Specifically, the COP is improved by 0.6% to 1.2% in an air-conditioning outdoor unit having a capability of 2.2 kW to 6.3 kW.
  • FIGS. 5 to 7 show another embodiment.
  • the accumulator 9 is omitted.
  • the intake pipe 10 comprises a base portion 25, a branch portion 26, and branch pipes 27 and 27.
  • the base portion 25 is connected to the primary port 6b of the four-way switching valve 2.
  • the branch pipes 27 and 27 are connected to the intake port 1b of the compressor 1.
  • the remaining configuration is the same as that in the preceding embodiment shown in FIGS. 2 to 4, so identical reference numerals will be given to identical members and description of those members will be omitted.
  • the present invention is not limited to the preceding embodiments and can be variously changed and implemented within the range of the scope of the invention.
  • the concavity-convexity pitch, the axial-direction length, and the radial dimensions of the concave portions and convex portions of the bellows metal pipes 23 configuring the flexible pipes 20 and 21 can be optionally set as long as the flexible pipes 20 and 21 can absorb the vibration and noise from the compressor 1.
  • the metal pipes 23 of the flexible pipes 20 and 21 are not limited to stainless steel pipes.
  • Various metal pipes through which the refrigerant stably flows, which can form bellows, and which can absorb vibration and noise can also be utilized as the metal pipes 23.
  • the outer cover members 24 covering the metal pipes 23 can also be configured by various kinds of rubber or synthetic resins, other than KEVLAR fiber (trademark).

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Pipe Accessories (AREA)
EP04773081A 2003-09-30 2004-09-15 Air conditioner outdoor unit, air conditioner, and compressor unit Withdrawn EP1684033A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003339958A JP2005106367A (ja) 2003-09-30 2003-09-30 空調室外機、空気調和機、及び圧縮機ユニット
PCT/JP2004/013408 WO2005033594A1 (ja) 2003-09-30 2004-09-15 空調室外機、空気調和機および圧縮機ユニット

Publications (1)

Publication Number Publication Date
EP1684033A1 true EP1684033A1 (en) 2006-07-26

Family

ID=34419165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04773081A Withdrawn EP1684033A1 (en) 2003-09-30 2004-09-15 Air conditioner outdoor unit, air conditioner, and compressor unit

Country Status (7)

Country Link
US (1) US20070039346A1 (ja)
EP (1) EP1684033A1 (ja)
JP (1) JP2005106367A (ja)
KR (1) KR20060080191A (ja)
CN (1) CN1849488A (ja)
AU (1) AU2004278595A1 (ja)
WO (1) WO2005033594A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114207364A (zh) * 2019-07-31 2022-03-18 大金工业株式会社 冷冻装置
US12055328B2 (en) 2019-07-31 2024-08-06 Daikin Industries, Ltd. Refrigeration apparatus and refrigerant pipe of the same refrigeration apparatus

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Publication number Priority date Publication date Assignee Title
KR100978680B1 (ko) * 2009-08-26 2010-08-30 충주대학교 산학협력단 밸브 블록, 이를 구비한 냉난방 장치 및 방법
KR20130090250A (ko) * 2012-02-03 2013-08-13 삼성전자주식회사 실외기 및 이를 포함하는 공기조화기
CA2897598C (en) * 2014-07-16 2018-03-06 Bronswerk Marine Inc. Modular refrigeration system, e.g., for ships
JP7071793B2 (ja) * 2015-10-19 2022-05-19 東芝ライフスタイル株式会社 衣類乾燥機およびヒートポンプユニット
EP3312525B1 (en) 2016-10-20 2020-10-21 LG Electronics Inc. Air conditioner
JP2018066548A (ja) * 2016-10-21 2018-04-26 株式会社東芝 熱交換器及び空気調和装置
KR102419898B1 (ko) * 2017-06-26 2022-07-12 엘지전자 주식회사 가스 히트 펌프 시스템
WO2019112307A1 (en) * 2017-12-05 2019-06-13 Samsung Electronics Co., Ltd. Air conditioner
KR102652240B1 (ko) * 2017-12-05 2024-03-29 삼성전자주식회사 공기 조화기
KR102623103B1 (ko) * 2018-11-20 2024-01-09 엘지전자 주식회사 열전모듈이 구비된 발판
WO2020137109A1 (ja) * 2018-12-28 2020-07-02 ダイキン工業株式会社 冷媒配管及び冷凍装置
JP2020109344A (ja) * 2018-12-28 2020-07-16 ダイキン工業株式会社 冷媒配管及び冷凍装置

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JPH024376Y2 (ja) * 1984-09-14 1990-02-01
US5182922A (en) * 1991-11-21 1993-02-02 Aeroquip Corporation Automotive air-conditioning system
US5848537A (en) * 1997-08-22 1998-12-15 Carrier Corporation Variable refrigerant, intrastage compression heat pump

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114207364A (zh) * 2019-07-31 2022-03-18 大金工业株式会社 冷冻装置
EP4006449A4 (en) * 2019-07-31 2022-09-14 Daikin Industries, Ltd. FREEZER
US12055328B2 (en) 2019-07-31 2024-08-06 Daikin Industries, Ltd. Refrigeration apparatus and refrigerant pipe of the same refrigeration apparatus
US12104832B2 (en) 2019-07-31 2024-10-01 Daikin Industries, Ltd. Refrigeration apparatus with stainless steel four-way switching valve and stainless steel pipes connected thereto

Also Published As

Publication number Publication date
CN1849488A (zh) 2006-10-18
AU2004278595A1 (en) 2005-04-14
JP2005106367A (ja) 2005-04-21
WO2005033594A1 (ja) 2005-04-14
US20070039346A1 (en) 2007-02-22
KR20060080191A (ko) 2006-07-07

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