EP2058610A1 - Système de réfrigération - Google Patents

Système de réfrigération Download PDF

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Publication number
EP2058610A1
EP2058610A1 EP07793060A EP07793060A EP2058610A1 EP 2058610 A1 EP2058610 A1 EP 2058610A1 EP 07793060 A EP07793060 A EP 07793060A EP 07793060 A EP07793060 A EP 07793060A EP 2058610 A1 EP2058610 A1 EP 2058610A1
Authority
EP
European Patent Office
Prior art keywords
silencing space
refrigeration system
type silencer
refrigerant passage
silencing
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.)
Granted
Application number
EP07793060A
Other languages
German (de)
English (en)
Other versions
EP2058610B1 (fr
EP2058610A4 (fr
Inventor
Satoshi Ishikawa
Masanori Masuda
Masahide Higuchi
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 EP2058610A1 publication Critical patent/EP2058610A1/fr
Publication of EP2058610A4 publication Critical patent/EP2058610A4/fr
Application granted granted Critical
Publication of EP2058610B1 publication Critical patent/EP2058610B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • 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
    • 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
    • F25B2500/12—Sound
    • 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
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide

Definitions

  • the present invention relates to a refrigeration system and particularly to a refrigeration system in which a ⁇ -type silencer is employed as a silencer.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, and a second refrigerant passage.
  • the ⁇ -type silencer includes a first silencing space, a second silencing space, and a communication path.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space is disposed below the first silencing space.
  • the communication path extends from the lower end of the first silencing space to the outside of the first silencing space and communicates with the second silencing space.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • the refrigerant may flow in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage, or in the opposite order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system. For this reason, in this refrigeration system, the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space is disposed below the first silencing space, and the communication path extends from the lower end of the first silencing space to the outside of the first silencing space and communicates with the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the first silencing space.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the second silencing space. Therefore, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer.
  • a refrigeration system according to a second aspect of the present invention is the refrigeration system according to the first aspect of the present invention, wherein the communication path extends into the inside of the second silencing space.
  • the communication path extends into the inside of the second silencing space.
  • just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • the longer the communication path is, the larger the pressure pulsation reduction effect becomes.
  • the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, and a second refrigerant passage.
  • the ⁇ -type silencer has a first silencing space, a second silencing space, a communication path, and an oil return hole.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space is disposed below the first silencing space.
  • the communication path extends from the inside to the outside of the first silencing space through the lower end and communicates with the second silencing space.
  • the oil return hole is disposed in the lower end portion of the communication path inside the first silencing space.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • the refrigerant may flow in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage, or in the opposite order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space is disposed below the first silencing space, and the communication path extends from the inside to the outside of the first silencing space through the lower end and communicates with the second silencing space, and the oil return hole is disposed in the lower end portion of the communication path inside the first silencing space.
  • refrigerating machine oil can be prevented from collecting in the first silencing space, and just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • a ⁇ -type silencer In a ⁇ -type silencer, the longer the communication path is, the larger the pressure pulsation reduction effect becomes. In other words, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the first silencing space, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the second silencing space. Therefore, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system according to a fourth aspect of the present invention is the refrigeration system according to the third aspect of the present invention, wherein the communication path extends into the inside of the second silencing space.
  • the communication path extends into the inside of the second silencing space.
  • just the communication path can be extended even longer without changing the size of the entire ⁇ -type silencer. Therefore, in this refrigeration system, the pressure pulsation reduction effect can be made even larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, and a second refrigerant passage.
  • the ⁇ -type silencer has a first silencing space, a second silencing space, and a communication path.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space and the first silencing space are disposed side-by-side.
  • the communication path extends from the lower end of the first silencing space and through the outside of the first silencing space to the lower end of the second silencing space and communicates with the second silencing space.
  • the second refrigerant passage communicates with the second silencing space.
  • the refrigerant may flow in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage, or in the opposite order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space and the first silencing space are disposed side-by-side, and the communication path extends from the lower end of the first silencing space and through the outside of the first silencing space to the lower end of the second silencing space and communicates with the second silencing space.
  • the entire length of the ⁇ -type silencer can be shortened. Consequently, in this refrigeration system, the options for the disposition of the ⁇ -type silencer can be expanded.
  • a refrigeration system according to a sixth aspect of the present invention is the refrigeration system according to the fifth aspect of the present invention, wherein the first refrigerant passage is inserted from the upper end of the first silencing space and extends into the inside of the first silencing space.
  • the first refrigerant passage is inserted from the upper end of the first silencing space and extends into the inside of the first silencing space.
  • refrigerating machine oil can be prevented from collecting in the first silencing space when the refrigerant flows from the second silencing space to the first silencing space.
  • a refrigeration system according to a seventh aspect of the present invention is the refrigeration system according to the fifth or sixth aspect of the present invention, wherein the second refrigerant passage is inserted from the upper end of the second silencing space and extends into the inside of the second silencing space.
  • the second refrigerant passage is inserted from the upper end of the second silencing space and extends into the inside of the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the second silencing space when the refrigerant flows from the first silencing space to the second silencing space.
  • a refrigeration system according to an eighth aspect of the present invention is the refrigeration system according to the fifth aspect of the present invention, wherein the first refrigerant passage extends from the upper end of the first silencing space.
  • the second refrigerant passage extends from the upper end of the second silencing space.
  • the first refrigerant passage extends from the upper end of the first silencing space
  • the second refrigerant passage extends from the upper end of the second silencing space.
  • a refrigeration system according to a ninth aspect of the present invention is the refrigeration system according to the fifth aspect of the present invention, wherein the first refrigerant passage extends from the lower end of the first silencing space.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • the first refrigerant passage extends from the lower end of the first silencing space
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • a refrigeration system according to a tenth aspect of the present invention is the refrigeration system according to any one of the fifth through ninth aspects of the present invention, wherein a mesh member fills the communication path.
  • the mesh member fills the communication path.
  • reflection waves can be prevented from arising inside the communication path.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, and a second refrigerant passage.
  • the ⁇ -type silencer has a first silencing space, a second silencing space, and a communication path.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space and the first silencing space are disposed side-by-side.
  • the communication path extends from the lower end of the first silencing space and through the outside of the first silencing space to the upper end of the second silencing space and communicates with the second silencing space.
  • the second refrigerant passage communicates with the second silencing space. Note that, in this refrigeration system, the refrigerant flows in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space and the first silencing space are disposed side-by-side, and the communication path extends from the lower end of the first silencing space and through the outside of the first silencing space to the upper end of the second silencing space and communicates with the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the first silencing space, the entire length of the ⁇ -type silencer can be shortened, and the communication path can be made longer.
  • a ⁇ -type silencer In a ⁇ -type silencer, the longer the communication path is, the larger the pressure pulsation reduction effect becomes. In other words, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the first silencing space, the options for the disposition of the ⁇ -type silencer can be expanded, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system according to a twelfth aspect of the present invention is the refrigeration system according to the eleventh aspect of the present invention, wherein the second refrigerant passage extends from the lower end of the second silencing space.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the second silencing space.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, and a second refrigerant passage.
  • the ⁇ -type silencer has a first silencing space, a second silencing space, and a communication path.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space and the first silencing space are disposed side-by-side.
  • the communication path extends from the inside of the first silencing space and through the upper end thereof to the upper end of the second silencing space and communicates with the second silencing space.
  • the second refrigerant passage communicates with the second silencing space.
  • the refrigerant may flow in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage, or in the opposite order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space and the first silencing space are disposed side-by-side, and the communication path extends from the inside of the first silencing space and through the upper end thereof to the upper end of the second silencing space and communicates with the second silencing space.
  • a ⁇ -type silencer In a ⁇ -type silencer, the longer the communication path is, the larger the pressure pulsation reduction effect becomes. In other words, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the first silencing space, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system according to a fourteenth aspect of the present invention is the refrigeration system according to the thirteenth aspect of the present invention, wherein the communication path extends from the upper end of the second silencing space into the inside of the second silencing space.
  • the communication path extends from the upper end of the second silencing space into the inside of the second silencing space.
  • just the communication path can be extended even longer without changing the size of the entire ⁇ -type silencer. Therefore, in this refrigeration system, the pressure pulsation reduction effect can be made even larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system according to a fifteenth aspect of the present invention is the refrigeration system according to the thirteenth or fourteenth aspect of the present invention, wherein the second refrigerant passage extends from the lower end of the second silencing space.
  • the second refrigerant passage extends from the lower end of the second silencing space.
  • refrigerating machine oil can be prevented from collecting in the second silencing space.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, and a second refrigerant passage.
  • the ⁇ -type silencer has a first silencing space, a second silencing space, and a communication path.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space and the first silencing space are disposed side-by-side.
  • the communication path extends from the side surface of the bottom portion of the first silencing space to the side surface of the bottom portion of the second silencing space and communicates with the second silencing space.
  • the second refrigerant passage is connected to the side surface of the bottom portion of the second silencing space and communicates with the second silencing space. Note that, in this refrigeration system, the refrigerant flows in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space and the first silencing space are disposed side-by-side.
  • the communication path extends from the side surface of the bottom portion of the first silencing space to the side surface of the bottom portion of the second silencing space and communicates with the second silencing space
  • the second refrigerant passage is connected to the side surface of the bottom portion of the second silencing space and communicates with the second silencing space.
  • a refrigeration system according to a seventeenth aspect of the present invention is the refrigeration system according to the sixteenth aspect of the present invention, wherein the communication path extends from the inside of the first silencing space into the inside of the second silencing space through the side surfaces of the bottom portions of the first silencing space and the second silencing space.
  • the communication path extends from the inside of the first silencing space into the inside of the second silencing space through the side surfaces of the bottom portions of the first silencing space and the second silencing space.
  • just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • the longer the communication path is, the larger the pressure pulsation reduction effect becomes.
  • the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • a refrigeration system according to an eighteenth aspect of the present invention is the refrigeration system according to the sixteenth or seventeenth aspect of the present invention, wherein the first refrigerant passage is connected to the side surface of the bottom portion of the first silencing space.
  • the first refrigerant passage is connected to the side surface of the bottom portion of the first silencing space.
  • refrigerating machine oil can be prevented from collecting in the first silencing space and the second silencing space in either of the cases where the refrigerant flows in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage or where the refrigerant flows in the order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • a refrigeration system comprises a first refrigerant passage, a ⁇ -type silencer, a second refrigerant passage, a first oil drain passage, and a second oil drain passage.
  • the ⁇ -type silencer has a first silencing space, a second silencing space, and a communication path.
  • the first silencing space communicates with the first refrigerant passage.
  • the second silencing space and the first silencing space are disposed side-by-side.
  • the communication path extends from the side surface of the first silencing space to the side surface of the second silencing space and communicates with the second silencing space.
  • the second refrigerant passage communicates with the second silencing space.
  • the first oil drain passage extends from the lower end of the first silencing space.
  • the second oil drain passage extends from the lower end of the second silencing space. Note that, in this refrigeration system, the refrigerant may flow in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage, or in the opposite order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • the ⁇ -type silencer is incorporated in this refrigeration system.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the first oil drain passage extends from the lower end of the first silencing space
  • the second oil drain passage extends from the lower end of the second silencing space.
  • a refrigeration system according to a twentieth aspect of the present invention is the refrigeration system according to the nineteenth aspect of the present invention, wherein the second oil drain passage merges with the first oil drain passage.
  • the second oil drain passage merges with the first oil drain passage.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer.
  • just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • the longer the communication path is, the larger the pressure pulsation reduction effect becomes.
  • the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • refrigerating machine oil can be prevented from collecting in the first silencing space, and just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • refrigerating machine oil can be prevented from collecting in the first silencing space, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • refrigerating machine oil can be prevented from collecting in the second silencing space. Therefore, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • just the communication path can be extended even longer without changing the size of the entire ⁇ -type silencer. Therefore, in this refrigeration system, the pressure pulsation reduction effect can be made even larger without changing the size of the entire ⁇ -type silencer.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the entire length of the ⁇ -type silencer can be shortened. Consequently, in this refrigeration system, the options for the disposition of the ⁇ -type silencer can be expanded.
  • refrigerating machine oil can be prevented from collecting in the first silencing space when the refrigerant flows from the second silencing space to the first silencing space.
  • refrigerating machine oil can be prevented from collecting in the second silencing space when the refrigerant flows from the first silencing space to the second silencing space.
  • a ⁇ -type silencer having a simple configuration can be used. Therefore, in this refrigeration system, manufacturing cost reduction can be expected.
  • refrigerating machine oil can be prevented from collecting in the first silencing space and the second silencing space.
  • reflection waves can be prevented from arising inside the communication path.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • the second silencing space and the first silencing space are disposed side-by-side, and the communication path extends from the lower end of the first silencing space to the upper end of the second silencing space through the outside of the first silencing space and communicates with the second silencing space.
  • a ⁇ -type silencer In a ⁇ -type silencer, the longer the communication path is, the larger the pressure pulsation reduction effect becomes. In other words, in this refrigeration system, refrigerating machine oil can be prevented from collecting in the first silencing space, the options for the disposition of the ⁇ -type silencer can be expanded, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • refrigerating machine oil can be prevented from collecting in the second silencing space.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • refrigerating machine oil can be prevented from collecting in the first silencing space even when the refrigerant flows from the first silencing space to the second silencing space, and the communication path can be made longer.
  • refrigerating machine oil can be prevented from collecting in the first silencing space, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • just the communication path can be extended even longer without changing the size of the entire ⁇ -type silencer. Therefore, in this refrigeration system, the pressure pulsation reduction effect can be made even larger without changing the size of the entire ⁇ -type silencer.
  • refrigerating machine oil can be prevented from collecting in the second silencing space.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • refrigerating machine oil can be prevented from collecting in the first silencing space and the second silencing space.
  • just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • the longer the communication path is, the larger the pressure pulsation reduction effect becomes.
  • the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • refrigerating machine oil can be prevented from collecting in the first silencing space and the second silencing space in either of the cases where the refrigerant flows in the order of: the first refrigerant passage ⁇ the ⁇ -type silencer ⁇ the second refrigerant passage or where the refrigerant flows in the order of: the second refrigerant passage ⁇ the ⁇ -type silencer ⁇ the first refrigerant passage.
  • the pressure pulsation can be sufficiently reduced even when carbon dioxide or the like is employed as a refrigerant.
  • refrigerating machine oil can be prevented from collecting in the first silencing space and the second silencing space.
  • refrigerating machine oil to be sent to the ⁇ -type silencer can be gathered together and returned to the compressor and the like.
  • FIG. 1 shows a general refrigerant circuit 2 of an air conditioner 1 pertaining to an embodiment of the present invention.
  • the air conditioner 1 uses carbon dioxide as a refrigerant, is capable of cooling operation and heating operation, and is mainly configured by the refrigerant circuit 2, blower fans 26 and 32, a controller 23, a high-pressure pressure sensor 21, a temperature sensor 22, an intermediate-pressure pressure sensor 24 and the like.
  • the refrigerant circuit 2 is mainly equipped with a compressor 11, a ⁇ -type silencer 20, a four-way switch valve 12, an outdoor heat exchanger 13, a first electrically powered expansion valve 15, a liquid receiver 16, a second electrically powered expansion valve 17 and an indoor heat exchanger 31, and the devices are, as shown in FIG. 1 , interconnected via refrigerant pipes.
  • the air conditioner 1 is a discrete-type air conditioner and may also be said to be configured by: an indoor unit 30 that mainly includes the indoor heat exchanger 31 and the indoor fan 32; an outdoor unit 10 that mainly includes the compressor 11, the ⁇ -type silencer 20, the four-way switch valve 12, the outdoor heat exchanger 13, the first electrically powered expansion valve 15, the liquid receiver 16, the second electrically powered expansion valve 17, the high-pressure pressure sensor 21, the intermediate-pressure pressure sensor 24, the temperature sensor 22 and the controller 23; a first communication pipe 41 that interconnects a refrigerant liquid pipe of the indoor unit 30 and a refrigerant liquid pipe of the outdoor unit 10; and a second communication pipe 42 that interconnects a refrigerant gas pipe of the indoor unit 30 and a refrigerant gas pipe of the outdoor unit 10.
  • the refrigerant liquid pipe of the outdoor unit 10 and the first communication pipe 41 are interconnected via a first close valve 18 of the outdoor unit 10 and that the refrigerant gas pipe of the outdoor unit 10 and the second communication pipe 42 are interconnected via a second close valve 19 of the outdoor unit 10.
  • the indoor unit 30 mainly includes the indoor heat exchanger 31, the indoor fan 32 and the like.
  • the indoor heat exchanger 31 is a heat exchanger for causing heat exchange between the refrigerant and room air that is air inside an air-conditioned room.
  • the indoor fan 32 is a fan for taking the air inside the air-conditioned room into the inside of the unit 30 and blowing out air-conditioned air, which is air after heat has been exchanged with the refrigerant via the indoor heat exchanger 31, back inside the air-conditioned room.
  • the indoor unit 30 is capable, during cooling operation, of generating air-conditioned air (cool air) by causing heat to be exchanged between the room air that has been taken inside by the indoor fan 32 and liquid refrigerant that flows through the indoor heat exchanger 31 and is capable, during heating operation, of generating air-conditioned air (warm air) by causing heat to be exchanged between the room air that has been taken inside by the indoor fan 32 and supercritical refrigerant that flows through the indoor heat exchanger 31.
  • air-conditioned air cool air
  • liquid refrigerant that flows through the indoor heat exchanger 31
  • air-conditioned air warm air
  • the outdoor unit 10 mainly includes the compressor 11, the ⁇ -type silencer 20, the four-way switch valve 12, the outdoor heat exchanger 13, the first electrically powered expansion valve 15, the liquid receiver 16, the second electrically powered expansion valve 17, the outdoor fan 26, the controller 23, the high-pressure pressure sensor 21, the temperature sensor 22, the intermediate-pressure pressure sensor 24 and the like.
  • the compressor 11 is a device for sucking in low-pressure gas refrigerant that flows through a suction pipe, compressing the low-pressure gas refrigerant to a supercritical state, and thereafter discharging the supercritical refrigerant to a discharge pipe. It will be noted that, in the present embodiment, the compressor 11 is an inverter rotary-type compressor.
  • the ⁇ -type silencer 20 is, as shown in FIG. 1 , disposed between a discharge side of the compressor 11 and the four-way switch valve 12.
  • the ⁇ -type silencer 20 is, as shown in FIG. 2 , configured by a first silencing space 201, a second silencing space 202 and a communication path 203 that allows the first silencing space 201 and the second silencing space 202 to be communicated.
  • a discharge path of the compressor 11 is connected to the first silencing space 201 via a first refrigerant passage 204 and that a heat transfer path of the outdoor heat exchanger 13 or the indoor heat exchanger 31 is connected to the second silencing space 202 via a second refrigerant passage 205.
  • the refrigerant always flows in the order of: the first silencing space 201 ⁇ the communication path 203 ⁇ the second silencing space 202.
  • the first silencing space 201 is a substantially cylindrical space, with the refrigerant passage 204 being connected to the upper end thereof in the axial direction and the communication path 203 being connected to the lower end thereof in the axial direction.
  • the second silencing space 202 is a substantially cylindrical space, with the communication path 203 being connected to the upper end thereof in the axial direction and the refrigerant passage 205 being connected to the lower end thereof in the axial direction.
  • the communication path 203 is a substantially cylindrical passage whose radius is smaller than the radii of the first silencing space 201 and the second silencing space 202, and the first silencing space 201 and the second silencing space 202 are connected to both sides of the communication path 203. It will be noted that, in the ⁇ -type silencer 20 pertaining to the present embodiment, the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed.
  • the length of the communication path 203 is longer than S 1 /2(1/V 1 +1/V 2 )(c/ ⁇ N min ) 2 and shorter than c/2f t .
  • S 1 is the cross-sectional area of the communication path 203
  • V 1 is the volume of the first silencing space 201
  • V 2 is the volume of the second silencing space 202
  • c is the speed of sound in carbon dioxide (when the pressure is 10 MPa, the density becomes 221.6 kg/m 3 and the speed of sound becomes 252 m/sec)
  • ⁇ is pi
  • N min is the minimum number of rotations of the compressor 11
  • f t is a target reduction highest frequency.
  • the ⁇ -type silencer 20 is housed in the outdoor unit 10 such that the first silencing space 201 and the second silencing space 202 are arranged one above the other along the vertical direction.
  • the four-way switch valve 12 is a valve for switching the flow direction of the refrigerant in correspondence to each operation and is capable, during cooling operation, of interconnecting the discharge side of the compressor 11 and a high temperature side of the outdoor heat exchanger 13 and also interconnecting the suction side of the compressor 11 and a gas side of the indoor heat exchanger 31 and is capable, during heating operation, of interconnecting the discharge side of the compressor 11 and the second close valve 19 and also interconnecting the suction side of the compressor 11 and a gas side of the outdoor heat exchanger 13.
  • the outdoor heat exchanger 13 is capable, during cooling operation, of using air outside the air-conditioned room as a heat source to cool the high-pressure supercritical refrigerant that has been discharged from the compressor 11 and is capable, during heating operation, of evaporating the liquid refrigerant that returns from the indoor heat exchanger 31.
  • the first electrically powered expansion valve 15 is for depressurizing the supercritical refrigerant (during cooling operation) that flows out from a low temperature side of the outdoor heat exchanger 13 or the liquid refrigerant (during heating operation) that flows in through the liquid receiver 16.
  • the liquid receiver 16 is for storing surplus refrigerant in accordance with the operating mode and the air conditioning load.
  • the second electrically powered expansion valve 17 is for depressurizing the liquid refrigerant (during cooling operation) that flows in through the liquid receiver 16 or the supercritical refrigerant (during heating operation) that flows out from a low temperature side of the indoor heat exchanger 31.
  • the outdoor fan 26 is a fan for taking outdoor air into the inside of the unit 10 and discharging the air after the air has exchanged heat with the refrigerant via the outdoor heat exchanger 13.
  • the high-pressure pressure sensor 21 is disposed on the discharge side of the compressor 11.
  • the temperature sensor 22 is disposed on the outdoor heat exchanger side of the first electrically powered expansion valve 15.
  • the intermediate-pressure pressure sensor 24 is disposed between the first electrically powered expansion valve 15 and the liquid receiver 16.
  • the controller 23 is communicably connected to the high-pressure pressure sensor 21, the temperature sensor 22, the intermediate-pressure pressure sensor 24, the first electrically powered expansion valve 15, the second electrically powered expansion valve 17 and the like and controls the openings of the first electrically powered expansion valve 15 and the second electrically powered expansion valve 17 on the basis of temperature information that is sent from the temperature sensor 22, high-pressure pressure information that is sent from the high-pressure pressure sensor 21 and intermediate-pressure pressure information that is sent from the intermediate-pressure pressure sensor 24.
  • the air conditioner 1 is, as mentioned above, capable of performing cooling operation and heating operation.
  • the four-way switch valve 12 is in the state indicated by the solid lines in FIG. 1 , that is, a state where the discharge side of the compressor 11 is connected to the high temperature side of the outdoor heat exchanger 13 and where the suction side of the compressor 11 is connected to the second close valve 19. Further, at this time, the first close valve 18 and the second close valve 19 are opened.
  • the supercritical refrigerant that has been cooled is sent to the first electrically powered expansion valve 15.
  • the supercritical refrigerant that has been sent to the first electrically powered expansion valve 15 is depressurized to a saturated state and is thereafter sent to the second electrically powered expansion valve 17 via the liquid receiver 16.
  • the refrigerant in the saturated state that has been sent to the second electrically powered expansion valve 17 is depressurized, becomes liquid refrigerant, is thereafter supplied to the indoor heat exchanger 31 via the first close valve 18, cools the room air, is evaporated and becomes gas refrigerant.
  • the four-way switch valve 12 is in the state indicated by the broken lines in FIG. 1 , that is, a state where the discharge side of the compressor 11 is connected to the second close valve 19 and where the suction side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13. Further, at this time, the first close valve 18 and the second close valve 19 are opened.
  • the supercritical refrigerant heats the room air in the indoor heat exchanger 31 and is cooled.
  • the supercritical refrigerant that has been cooled is sent to the second electrically powered expansion valve 17 through the first close valve 18.
  • the supercritical refrigerant that has been sent to the second electrically powered expansion valve 17 is depressurized to a saturated state and is thereafter sent to the first electrically powered expansion valve 15 via the liquid receiver 16.
  • the refrigerant in the saturated state that has been sent to the first electrically powered expansion valve 15 is depressurized, becomes liquid refrigerant, is thereafter sent to the outdoor heat exchanger 13, is evaporated in the outdoor heat exchanger 13 and becomes gas refrigerant.
  • the gas refrigerant is sucked back into the compressor 11 via the four-way switch valve 12. In this manner, heating operation is performed.
  • the ⁇ -type silencer 20 is connected to the discharge pipe of the compressor 11. For this reason, in the air conditioner 1, pressure pulsation can be sufficiently reduced.
  • the ⁇ -type silencer 20 is housed in the outdoor unit 10 such that the first silencing space 201 and the second silencing space 202 are arranged one above the other along the vertical direction. For this reason, in the air conditioner 1, refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer 20.
  • the length of the communication path is longer than S 1 /2(1/V 1 +1/V 2 )(c/ ⁇ N min ) 2 and shorter than c/2f t .
  • the cutoff frequency of the ⁇ -type silencer 20 can be made equal to or less than the minimum number of rotations of the compression mechanism, and a frequency that is smaller than the target reduction highest frequency f t can be reduced.
  • the ⁇ -type silencer 20 that includes the communication path 203 that extends along the axial direction of the first silencing space 201 from the lower end of the first silencing space 201 and is connected to the upper end of the second silencing space 202, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20a such as shown in FIG. 3 .
  • a communication path 203a that extends along the axial direction of the first silencing space 201 from the lower end of the first silencing space 201 penetrates the upper end of the second silencing space 202 and is inserted into the inside of the second silencing space 202.
  • the ⁇ -type silencer 20a When the ⁇ -type silencer 20a is employed, just the communication path can be extended long without changing the size of the entire ⁇ -type silencer. In a ⁇ -type silencer, the longer the communication path is, the larger the pressure pulsation reduction effect becomes. In other words, the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • a ⁇ -type silencer 20b such as shown in FIG. 4 .
  • a communication path 203b extends along the axis of the first silencing space 201 from the inside of the first silencing space 201 and through the lower end of the first silencing space 201 to the outside, and then penetrates the upper end of the second silencing space 202 and extends into the inside of the second silencing space 202.
  • an oil return hole 206 is disposed in the lower end portion of the communication path 203b inside the first silencing space 201.
  • refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer, and just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • the longer the communication path is the larger the pressure pulsation reduction effect becomes.
  • refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • the ⁇ -type silencer 20 where the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed on a straight line and face the vertical direction, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20c such as shown in FIG. 5 .
  • a first silencing space 201 c and a second silencing space 202c are disposed side-by-side, and the axes of both of the silencing spaces 201c and 202c are along the vertical direction but are not superposed on a straight line.
  • a communication path 203c is U-shaped and extends from the lower end of the first silencing space 201c to the lower end of the second silencing space 202c.
  • the entire length of the ⁇ -type silencer can be shortened. Consequently, the options for the disposition of the ⁇ -type silencer in the outdoor unit 10 can be expanded.
  • a ⁇ -type silencer 20d such as shown in FIG. 6 .
  • the ⁇ -type silencer 20d is one where a mesh member 207 fills the communication path 203c of the ⁇ -type silencer 20c shown in FIG. 5 .
  • reflection waves can be prevented from arising inside the communication path 203c.
  • a ⁇ -type silencer 20e such as shown in FIG. 7 .
  • the ⁇ -type silencer 20e is one where a first refrigerant passage 204e and a second refrigerant passage 205e are inserted into the insides of the first silencing space 201c and the second silencing space 202c of the ⁇ -type silencer 20c shown in FIG. 5 .
  • the ⁇ -type silencer 20e it can be ensured that refrigerating machine oil does not collect in the first silencing space 201 c and the second silencing space 202c.
  • the ⁇ -type silencer 20 where the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed on a straight line and face the vertical direction, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20f such as shown in FIG. 8 .
  • a first silencing space 201c and a second silencing space 202c are disposed side-by-side, and the axes of both of the silencing spaces 201c and 202c are along the vertical direction but are not superposed on a straight line.
  • a communication path 203 f is U-shaped, penetrates the upper end of the first silencing space 201c from the inside of the first silencing space 201 c, extends to the upper end of the second silencing space 202c, penetrates the upper end of the second silencing space 202c and extends into the inside of the second silencing space 202c.
  • the entire length of the ⁇ -type silencer can be shortened, refrigerating machine oil can be prevented from collecting in the first silencing space 201 c and the second silencing space 202c, and just the communication path can be extended long without changing the size of the entire ⁇ -type silencer.
  • the options for the disposition of the ⁇ -type silencer in the outdoor unit 10 can be expanded, refrigerating machine oil can be prevented from collecting in the first silencing space 201 c and the second silencing space 202c, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • the ⁇ -type silencer 20 where the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed on a straight line and face the vertical direction, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20g such as shown in FIG. 9 .
  • a first silencing space 201c and a second silencing space 202c are disposed side-by-side, and the axes of both of the silencing spaces 201 c and 202c are along the vertical direction but are not superposed on a straight line.
  • a communication path 203g is S-shaped and extends from the lower end of the first silencing space 201 c to the upper end of the second silencing space 202c.
  • the options for the disposition of the ⁇ -type silencer in the outdoor unit 10 can be expanded, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • the communication path 203g that extends from the lower end of the first silencing space 201c may also penetrate the upper end of the second silencing space 202c and extend into the inside of the second silencing space 202c.
  • the ⁇ -type silencer 20 where the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed on a straight line and face the vertical direction, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20h such as shown in FIG. 10 .
  • a first silencing space 201c and a second silencing space 202c are disposed side-by-side, and the axes of both of the silencing spaces 201c and 202c are along the vertical direction but are not superposed on a straight line.
  • a first refrigerant passage 204h is connected to the lower end of the first silencing space 201c
  • a second refrigerant passage 205h is connected to the lower end of the second silencing space 202c.
  • a communication path 203c is U-shaped and extends from the lower end of the first silencing space 201c to the lower end of the second silencing space 202c.
  • the ⁇ -type silencer 20 where the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed on a straight line and face the vertical direction, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20i such as shown in FIG. 11 .
  • the ⁇ -type silencer 20i is housed in the outdoor unit 10 such that axes of a first silencing space 201i and a second silencing space 202i are superposed on a straight line and face the horizontal direction.
  • a first refrigerant passage 204 is connected to the lowermost portion of the outer end of the first silencing space 201i
  • a second refrigerant passage 205 is connected to the lowermost portion of the outer end of the second silencing space 202i.
  • a communication path 203i interconnects the lowermost portion of the inner end of the first silencing space 201i and the lowermost portion of the inner end of the second silencing space 202i.
  • a ⁇ -type silencer 20j such as shown in FIG. 12 .
  • a communication path 203j penetrates the lowermost portion of the inner end of the first silencing space 201i and the lowermost portion of the inner end of the second silencing space 202i and extends into the inside of the second silencing space 202i from the inside of the first silencing space 201 i.
  • refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer, and the communication path can be made longer without changing the size of the entire ⁇ -type silencer.
  • a ⁇ -type silencer In a ⁇ -type silencer, the longer the communication path is, the larger the pressure pulsation reduction effect becomes. In other words, refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer, and the pressure pulsation reduction effect can be made larger without changing the size of the entire ⁇ -type silencer.
  • the ⁇ -type silencer 20 where the axes of the first silencing space 201, the second silencing space 202 and the communication path 203 are superposed on a straight line and face the vertical direction, but instead of the ⁇ -type silencer 20, there may also be employed a ⁇ -type silencer 20k such as shown in FIG. 13 .
  • the ⁇ -type silencer 20k is housed in the outdoor unit 10 such that axes of a first silencing space 201i, a second silencing space 202i and a communication path 203k are superposed on a straight line and face the horizontal direction.
  • a first oil drain passage 206k extends from the lower end of the first silencing space 201 i
  • a second oil drain passage 207k extends from the lower end of the second silencing space 202i. It will be noted that the first oil drain passage 206k and the second oil drain passage 207k merge midway and are connected to the suction pipe of the compressor 11 via a capillary. When the ⁇ -type silencer 20k is employed, refrigerating machine oil can be prevented from collecting in the ⁇ -type silencer.
  • the communication path 203k may also penetrate the center of the inner end of the first silencing space 201i and the center of the second silencing space 202i and extend into the inside of the second silencing space 202i from the inside of the first silencing space 201i.
  • the ⁇ -type silencer 20 was connected to the discharge pipe of the compressor 11, but instead of this, the ⁇ -type silencer 20 may also be connected to the suction pipe of the compressor 11. Further, the ⁇ -type silencer 20 may also be connected to both the discharge pipe and the suction pipe of the compressor 11.
  • the air conditioner 1 pertaining to the preceding embodiment, although it was not touched upon, when vessels such as an oil separator, an accumulator and a liquid receiver are present in the refrigerant circuit 2, the spaces inside of those may also be utilized as the first silencing space or the second silencing space. By so doing, the refrigerant circuit 2 can be simplified.
  • the shape of the first silencing space 201 was cylindrical, but in the present invention, the shape of the first silencing space 201 is not particularly limited and may also be a cuboid or a regular hexahedron, for example.
  • the shape of the second silencing space 202 was cylindrical, but in the present invention, the shape of the second silencing space 202 is not particularly limited and may also be a cuboid or a regular hexahedron, for example.
  • the first silencing space 201 and the second silencing space 202 were configured to have the same shape and the same volume, but in the present invention, the shapes and the volumes of the first silencing space 201 and the second silencing space 202 may also be different.
  • the shape of the communication path 203 was cylindrical, but in the present invention, the shape of the communication path 203 is not particularly limited and may also be a cuboid, for example.
  • the refrigeration system according to the present invention has the characteristic that it can sufficiently reduce pressure pulsation even when carbon dioxide or the like is employed as a refrigerant, so the refrigeration system is suited to a refrigeration system that employs carbon dioxide or the like as a refrigerant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Other Air-Conditioning Systems (AREA)
EP07793060.0A 2006-08-30 2007-08-28 Système de réfrigération Active EP2058610B1 (fr)

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JP2006233674A JP4983158B2 (ja) 2006-08-30 2006-08-30 冷凍装置
PCT/JP2007/066616 WO2008026569A1 (fr) 2006-08-30 2007-08-28 Système de réfrigération

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CN103542650B (zh) * 2013-11-07 2016-01-20 芜湖汉峰科技有限公司 一种储液器及其生产方法
JP2019095118A (ja) * 2017-11-21 2019-06-20 三菱重工サーマルシステムズ株式会社 冷凍機
CN109780361B (zh) * 2019-01-28 2020-10-09 大连大学 一种管路宽频流体压力脉动消减器
KR102286976B1 (ko) 2019-07-08 2021-08-05 엘지전자 주식회사 공기조화기
EP3828413B1 (fr) * 2019-11-28 2023-03-22 Daikin Europe N.V. Pompe à chaleur comprenant un silencieux
CN111472958B (zh) * 2020-03-16 2021-09-21 珠海格力节能环保制冷技术研究中心有限公司 消音器结构、压缩机以及具有其的冰箱

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KR20090047505A (ko) 2009-05-12
ES2728955T3 (es) 2019-10-29
JP2008057829A (ja) 2008-03-13
EP2058610B1 (fr) 2019-03-06
AU2007289779B2 (en) 2010-11-11
CN101501419A (zh) 2009-08-05
CN101501419B (zh) 2012-06-06
TR201907699T4 (tr) 2019-06-21
EP2058610A4 (fr) 2014-09-03
AU2007289779A1 (en) 2008-03-06
WO2008026569A1 (fr) 2008-03-06
JP4983158B2 (ja) 2012-07-25
US20100242522A1 (en) 2010-09-30

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