WO2008015965A1 - Dispositif de réfrigération - Google Patents

Dispositif de réfrigération Download PDF

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Publication number
WO2008015965A1
WO2008015965A1 PCT/JP2007/064737 JP2007064737W WO2008015965A1 WO 2008015965 A1 WO2008015965 A1 WO 2008015965A1 JP 2007064737 W JP2007064737 W JP 2007064737W WO 2008015965 A1 WO2008015965 A1 WO 2008015965A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
silencer
expansion
expander
pipe
Prior art date
Application number
PCT/JP2007/064737
Other languages
English (en)
Japanese (ja)
Inventor
Satoshi Ishikawa
Kazutaka Hori
Eiji Kumakura
Katsumi Sakitani
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.
Priority to EP07791431.5A priority Critical patent/EP2048457B1/fr
Publication of WO2008015965A1 publication Critical patent/WO2008015965A1/fr

Links

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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/0272—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using bridge circuits of one-way 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound

Definitions

  • Patent Document 1 Japanese Patent Laid-Open No. 2000-234814
  • Patent Document 2 Japanese Unexamined Patent Application Publication No. 2004-190938
  • the second invention is the refrigeration apparatus of the first invention, wherein the refrigerant circuit (10) uses carbon dioxide as the refrigerant, and the compressor (20) compresses the refrigerant to a critical pressure or higher. A refrigeration cycle is performed, and the silencer (30, 40, 50) is provided on the inflow side of the expander (22)! /.
  • a fourth invention is the refrigeration apparatus according to the first or second invention, wherein the expander (22) is configured to depressurize the high-pressure refrigerant into a gas-liquid two-phase state, and the muffler The device (30, 40, 50) is provided on the outflow side of the expander (22).
  • the partition plate (60) is provided in the opening of the expansion passage (32) on the expander (22) side.
  • the partition plate (60) has an opening having a smaller diameter than the refrigerant pipe, and functions as a so-called orifice in the opening of the expansion passageway (32).
  • the expansion passage (32) of the expansion silencer (30) is formed in a spiral shape.
  • the sound speed of the refrigerant flowing through the silencer (30, 40, 50) becomes relatively small, and the silencer (30, 40, 50) is designed to be compact. be able to.
  • the expansion passage (32) is formed in a spiral shape, so that the silencing device (30) is provided while ensuring a sufficient passage length of the expansion passage (32).
  • FIG. 1 is a schematic configuration diagram of a refrigerant circuit of a refrigeration apparatus according to Embodiment 1.
  • FIG. 2 is a schematic configuration diagram of an inflatable silencer according to the first embodiment.
  • FIG. 7 is a schematic configuration diagram of an interference silencer.
  • FIG. 8 is a schematic perspective view of an expansion-type silencer formed in a spiral shape.
  • the refrigeration apparatus of Embodiment 1 constitutes an air conditioner (1) that air-conditions a room.
  • the refrigeration apparatus (1) includes a refrigerant circuit (10) in which a refrigerant is circulated to perform a vapor compression refrigeration cycle.
  • This refrigerant circuit (10) is filled with carbon dioxide as a refrigerant.
  • a refrigeration cycle is performed in which the refrigerant is compressed to a critical pressure or higher.
  • the compressor (20) is a positive displacement compressor.
  • a rotary type compression mechanism is accommodated in the casing.
  • the gas refrigerant is compressed until it becomes a refrigerant having a critical pressure or higher.
  • the above radiator (21) For example, it is disposed in an indoor space and is configured by a fin-and-tube heat exchanger. In the radiator (21), heat is released to the high-temperature and high-pressure refrigerant power indoor air.
  • the expander (22) is a positive displacement expander. In this expander (22), a rotary type expansion mechanism is housed in a casing.
  • the refrigerant circuit (10) is provided with an expansion silencer (30).
  • the expansion silencer (30) is attached to the inflow pipe (12) on the inflow side of the expander (22).
  • the expansion silencer (30) includes a hollow cylindrical casing (31), and a cylindrical expansion passage (32) is formed in the casing (31).
  • a refrigerant inflow pipe (12a) is connected to the opening on one end side of the expansion passage (32), and a refrigerant outflow pipe (12b) is connected to the opening on the other end side.
  • the refrigerant inflow pipe (12a) and the refrigerant outflow pipe (12b) have an inner diameter of about 10 mm
  • the casing (31) has an inner diameter of about 30 mm.
  • a partition plate (60) is provided in an opening on the side of the expander (22) in the expansion passage (32).
  • the partition plate (60) has a circular opening (61) having a smaller diameter than the inner diameter of the refrigerant outflow pipe (12b), and is fitted into the refrigerant outflow pipe (12b).
  • This partition plate (60) functions as an orifice that prevents resonance of pressure waves generated from the expander (22) when the expander (22) is operated.
  • the expansion silencer (30) is provided on the inflow side of the expander (22). For this reason, the pressure pulsation of the refrigerant on the inflow side of the expander (22) can be effectively reduced while the silencer is simply configured. That is, according to the present invention, it is possible to reduce the cost of the silencer as compared with the conventional accumulator. In addition, since the silencer has a simple structure, the maintenance of the silencer (30) is facilitated.
  • the refrigerant circuit (10) compresses carbon dioxide to a critical pressure or higher.
  • the passage length 1 of the expansion passage (32) can be designed to be shortened accordingly.
  • the expansion silencer (30) can be downsized.
  • the partition plate (60) constituting the orifice is provided in the opening on the side of the expander (22) in the expansion passage (32). Therefore, resonance can be prevented from occurring in the refrigerant pipe (refrigerant outflow pipe (12b)) between the expansion silencer (30) and the expander (22), and noise caused by this resonance can also be prevented. Can be avoided.
  • the refrigerant when the refrigerant is made to enter the expansion silencer (30) after being in a gas-liquid two-phase state in this way, for example, the sound velocity of the refrigerant flowing through the expansion passage (32) is reduced compared to a gas refrigerant. Furthermore, the power can be reduced. As a result, the passage length 1 of the expansion passage (32) can be designed to be shorter, and the expansion silencer (30) can be downsized.
  • the expansion passage (32) side in the expansion passage (32) (the refrigerant inflow pipe (1 Since the partition plate (60) is provided at the opening of 3a)), the above-described resonance can be avoided in the refrigerant inflow pipe (13a).
  • an expansion valve (24) is provided between the radiator (21) and the expander (22).
  • the expansion valve (24) constitutes a decompression means that decompresses the high-pressure refrigerant that has radiated heat from the radiator (21) to bring it into a gas-liquid two-phase state.
  • an expansion silencer (30) similar to the above embodiments is provided between the outflow side of the pressure reducing valve (24) and the inflow side of the expander (22).
  • Embodiment 3 as in Embodiment 2, the gas-liquid two-phase refrigerant is allowed to flow through the expansion silencer (30). For this reason, the flow velocity of the refrigerant flowing through the expansion passage (32) can be reduced, and the expansion passage (32) can be designed to be short.
  • the expansion passage (32) may be formed in a spiral shape or a spiral shape.
  • the expansion silencer (30) can be designed in a compact manner while securing a certain length of the expansion passage (32).
  • the compression mechanism of the compressor (20) and the expansion mechanism of the expander (22) are connected by a rotating shaft so as to constitute a so-called uniaxially connected expansion compressor. It is okay.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention concerne un dispositif de réduction du bruit de type expansion (30) pourvu dans un circuit réfrigérant (10) du côté entrée d'une machine d'expansion (22). Dans le circuit réfrigérant (10), du dioxyde de carbone est comprimé jusqu'à dépasser la pression critique, et le réfrigérant s'écoule dans un circuit d'expansion (32) du dispositif de réduction du bruit de type expansion (30).
PCT/JP2007/064737 2006-08-01 2007-07-27 Dispositif de réfrigération WO2008015965A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07791431.5A EP2048457B1 (fr) 2006-08-01 2007-07-27 Dispositif de réfrigération

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006209708A JP4904970B2 (ja) 2006-08-01 2006-08-01 冷凍装置
JP2006-209708 2006-08-01

Publications (1)

Publication Number Publication Date
WO2008015965A1 true WO2008015965A1 (fr) 2008-02-07

Family

ID=38997145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/064737 WO2008015965A1 (fr) 2006-08-01 2007-07-27 Dispositif de réfrigération

Country Status (3)

Country Link
EP (1) EP2048457B1 (fr)
JP (1) JP4904970B2 (fr)
WO (1) WO2008015965A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021228027A1 (fr) * 2020-07-22 2021-11-18 青岛海尔空调电子有限公司 Tuyau de rectification de fluide frigorigène et unité intérieure de climatiseur
WO2024051179A1 (fr) * 2022-09-08 2024-03-14 青岛海尔空调器有限总公司 Appareil et procédé de détermination de paramètre de silencieux, dispositif, support de stockage et système

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010048466A (ja) * 2008-08-21 2010-03-04 Daikin Ind Ltd 冷凍装置
EP3828482A1 (fr) * 2019-11-28 2021-06-02 Daikin Europe N.V. Pompe à chaleur dotée d'un silencieux
DE102020100445A1 (de) * 2020-01-10 2021-07-15 Viessmann Werke Gmbh & Co Kg Wärmetechnisches Gerät

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54178220U (fr) * 1978-06-07 1979-12-17
JPS5618496U (fr) * 1979-07-23 1981-02-18
JPS5660061U (fr) * 1979-10-15 1981-05-22
JPS5699374U (fr) * 1980-12-22 1981-08-05
JPH0763442A (ja) * 1993-08-31 1995-03-10 Hitachi Ltd 空気調和機
JPH07120105A (ja) * 1993-10-29 1995-05-12 Hitachi Ltd 空気調和機
JP2000234814A (ja) 1999-02-17 2000-08-29 Aisin Seiki Co Ltd 蒸気圧縮式冷凍装置
JP2003279179A (ja) * 2002-03-26 2003-10-02 Mitsubishi Electric Corp 冷凍空調装置
JP2004190938A (ja) 2002-12-11 2004-07-08 Daikin Ind Ltd 冷凍装置
JP2005188863A (ja) * 2003-12-26 2005-07-14 Daikin Ind Ltd ヒートポンプ式給湯装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4878350A (en) * 1989-03-08 1989-11-07 Air Products And Chemicals, Inc. Pulsation dampening device for super critical fluid expansion engine, hydraulic engine or pump in cryogenic service
JP2004218934A (ja) * 2003-01-15 2004-08-05 Mitsubishi Electric Corp 膨張形マフラー及びそれを用いた冷凍サイクル回路、並びにその製造方法
JP2005098663A (ja) * 2003-09-02 2005-04-14 Sanyo Electric Co Ltd 遷臨界冷媒サイクル装置
JP4617812B2 (ja) * 2004-09-30 2011-01-26 ダイキン工業株式会社 容積型膨張機

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54178220U (fr) * 1978-06-07 1979-12-17
JPS5618496U (fr) * 1979-07-23 1981-02-18
JPS5660061U (fr) * 1979-10-15 1981-05-22
JPS5699374U (fr) * 1980-12-22 1981-08-05
JPH0763442A (ja) * 1993-08-31 1995-03-10 Hitachi Ltd 空気調和機
JPH07120105A (ja) * 1993-10-29 1995-05-12 Hitachi Ltd 空気調和機
JP2000234814A (ja) 1999-02-17 2000-08-29 Aisin Seiki Co Ltd 蒸気圧縮式冷凍装置
JP2003279179A (ja) * 2002-03-26 2003-10-02 Mitsubishi Electric Corp 冷凍空調装置
JP2004190938A (ja) 2002-12-11 2004-07-08 Daikin Ind Ltd 冷凍装置
JP2005188863A (ja) * 2003-12-26 2005-07-14 Daikin Ind Ltd ヒートポンプ式給湯装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2048457A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021228027A1 (fr) * 2020-07-22 2021-11-18 青岛海尔空调电子有限公司 Tuyau de rectification de fluide frigorigène et unité intérieure de climatiseur
WO2024051179A1 (fr) * 2022-09-08 2024-03-14 青岛海尔空调器有限总公司 Appareil et procédé de détermination de paramètre de silencieux, dispositif, support de stockage et système

Also Published As

Publication number Publication date
JP4904970B2 (ja) 2012-03-28
EP2048457B1 (fr) 2016-08-31
EP2048457A4 (fr) 2015-03-04
JP2008039199A (ja) 2008-02-21
EP2048457A1 (fr) 2009-04-15

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