CN101501419B - Refrigeration system - Google Patents

Refrigeration system Download PDF

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Publication number
CN101501419B
CN101501419B CN2007800292296A CN200780029229A CN101501419B CN 101501419 B CN101501419 B CN 101501419B CN 2007800292296 A CN2007800292296 A CN 2007800292296A CN 200780029229 A CN200780029229 A CN 200780029229A CN 101501419 B CN101501419 B CN 101501419B
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CN
China
Prior art keywords
silence space
type muffler
refrigerating plant
silence
refrigerant passage
Prior art date
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Expired - Fee Related
Application number
CN2007800292296A
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Chinese (zh)
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CN101501419A (en
Inventor
石川谕
增田正典
樋口顺英
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Daikin Industries Ltd
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Daikin Industries Ltd
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Publication of CN101501419A publication Critical patent/CN101501419A/en
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    • 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

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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)

Abstract

A refrigeration system employing carbon dioxide, or the like, as refrigerant of which the pulsation of pressure is reduced sufficiently. The refrigeration system (1) comprises a first refrigerant path (204), p type mufflers (20, 20a), and a second refrigerant path (205). The p type muffler has a first silence space (201), a second silence space (202), and communication paths (203, 203a). The first silence space communicates with the first refrigerant path. The second silence space is arranged below the first silence space. The communication path extends from the lower end of the first silence space toward the outside of the first silence space, and communicates with the second silence space. The second refrigerant path extends from the lower end of the second silence space.

Description

Refrigerating plant
Technical field
The present invention relates to refrigerating plant, particularly relate to and adopt the refrigerating plant of π type muffler as muffler.
Background technology
In recent years, adopt the refrigerating plant commercialization of carbon dioxide as cold-producing medium.But when such employing carbon dioxide during as the cold-producing medium of refrigerating plant, it is big that the density of cold-producing medium and velocity of sound become, and certainly leads to pressure fluctuation and become big problem.To this problem, in recent years, the method (for example, with reference to special permission document 1, special permission document 2, non-special permission document 1 and non-special permission document 2) of the pressure fluctuation of various reduction refrigerating plants has been proposed.
Special permission document 1: japanese kokai publication hei 6-10875 communique
Special permission document 2: TOHKEMY 2004-218934 communique
Non-Patent Document 1: Yamada Sakae, Otani iwa, "Io re フ イ su お yo shareholders' π type with columns of Heating, Air Other u affiliates pulsating removed," Japan Society of Mechanical Engineers (No. 2), 1968 December, Volume 34, No. 268, p .2139-2145
Non-Patent Document 2: Japanese Society of Mechanical Engineers Code, "Case study shabu ni connected fluid vibration", first edition, published Gihodo Corporation, September 20, 2003, p.190-193
Summary of the invention
Problem of the present invention is, reduces fully and adopts the pressure fluctuation as the refrigerating plant of cold-producing medium such as carbon dioxide.
The described refrigerating plant of first aspect present invention has first refrigerant passage, π type muffler and second refrigerant passage.π type muffler has first silence space, second silence space and access.First silence space is communicated with first refrigerant passage.Second silence space is configured in the below of first silence space.Access extends towards the outside of first silence space from the lower end of first silence space and is communicated with second silence space.Second refrigerant passage is extended from the lower end of second silence space.In addition, in this refrigerating plant, cold-producing medium can flow according to the order of first refrigerant passage → π type muffler → second refrigerant passage, also can be mobile according to the order of second refrigerant passage → π type muffler → first refrigerant passage on the contrary.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And in this refrigerating plant, second silence space is configured in the below of first silence space, and access extends towards the outside of first silence space from the lower end of first silence space and is communicated with second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space.And in this refrigerating plant, second refrigerant passage is extended from the lower end of second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.Thereby, in this refrigerating plant, can prevent that refrigerator oil from accumulating in the π type muffler.
For the described refrigerating plant of second aspect present invention, in the described refrigerating plant of first aspect, access extends to the inside of second silence space.
In this refrigerating plant, access extends to the inside of second silence space.Therefore, in this refrigerating plant, can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, link Lu Yuechang, the effect that pressure fluctuation reduces is big more.That is, in this refrigerating plant, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
The refrigerating plant that third aspect present invention relates to has first refrigerant passage, π type muffler and second refrigerant passage.π type muffler has first silence space, second silence space, access and spill port.First silence space is communicated with first refrigerant passage.Second silence space is configured in the below of first silence space.Access extends towards the outside of first silence space through the lower end from the inside of first silence space and is communicated with second silence space.Spill port is set in place the bottom of the access in first silence space.Second refrigerant passage is extended from the lower end of second silence space.In addition, in this refrigerating plant, cold-producing medium can flow according to the order of first refrigerant passage → π type muffler → second refrigerant passage, also can be mobile according to the order of second refrigerant passage → π type muffler → first refrigerant passage on the contrary.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And; In this refrigerating plant; Second silence space is configured in the below of first silence space; Access extends towards the outside of first silence space through the lower end from the inside of first silence space and is communicated with second silence space, and spill port is set in place the bottom of the access in first silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, and can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, link Lu Yuechang, the effect that pressure fluctuation reduces is big more.That is, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, needn't change the whole size of π type muffler simultaneously and just can increase the effect that pressure fluctuation reduces.And in this refrigerating plant, second refrigerant passage is extended from the lower end of second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.Thereby, in this refrigerating plant, can prevent that refrigerator oil from accumulating in the π type muffler, needn't change the whole size of π type muffler simultaneously and just can increase the effect that pressure fluctuation reduces.
For the described refrigerating plant of fourth aspect present invention, in the described refrigerating plant of the third aspect, access extends to the inside of second silence space.
In this refrigerating plant, access extends to the inside of second silence space.Therefore, in this refrigerating plant, can further only prolong the size that links the road and needn't change π type muffler integral body.Therefore, in this refrigerating plant, needn't change the whole size of π type muffler and just can further increase the effect that pressure fluctuation reduces.
The described refrigerating plant of fifth aspect present invention has first refrigerant passage, π type muffler and second refrigerant passage.π type muffler has first silence space, second silence space and access.First silence space is communicated with first refrigerant passage.Second silence space is configured in the side of first silence space.Access extends to the lower end of second silence space from the lower end of first silence space through the outside of first silence space and is communicated with second silence space.Second refrigerant passage is communicated with second silence space.In addition, in this refrigerating plant, cold-producing medium can flow according to the order of first refrigerant passage → π type muffler → second refrigerant passage, also can be mobile according to the order of second refrigerant passage → π type muffler → first refrigerant passage on the contrary.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And in this refrigerating plant, second silence space is configured in the side of first silence space, and access extends to the lower end of second silence space from the lower end of first silence space through the outside of first silence space and is communicated with second silence space.Therefore, in this refrigerating plant, can shorten the total length of π type muffler.Thereby, in this refrigerating plant, can enlarge the selection of the configuration of π type muffler.
For the described refrigerating plant of sixth aspect present invention, in the described refrigerating plant, first refrigerant passage inserts and extends to the inside of first silence space from the upper end of first silence space aspect the 5th.
In this refrigerating plant, first refrigerant passage inserts and extends to the inside of first silence space from the upper end of first silence space.Therefore, in this refrigerating plant, when cold-producing medium from second silence space when first silence space flows, refrigerator oil can not accumulate in first silence space.
For the described refrigerating plant of seventh aspect present invention, aspect the 5th or in the described refrigerating plant in the 6th aspect, second refrigerant passage inserts and extends to the inside of second silence space from the upper end of second silence space.
In this refrigerating plant, second refrigerant passage inserts and extends to the inside of second silence space from the upper end of second silence space.Therefore, in this refrigerating plant, when cold-producing medium from first silence space when second silence space flows, refrigerator oil can not accumulate in second silence space.
For the described refrigerating plant of eighth aspect present invention, in the described refrigerating plant, first refrigerant passage is extended from the upper end of first silence space aspect the 5th.And second refrigerant passage is extended from the upper end of second silence space.
In this refrigerating plant, first refrigerant passage is extended from the upper end of first silence space, and second refrigerant passage is extended from the upper end of second silence space.Therefore, in this refrigerating plant, can utilize simple π type muffler.Therefore, in this refrigerating plant, can expect to reduce manufacturing cost.
For the described refrigerating plant of nineth aspect present invention, in the described refrigerating plant, first refrigerant passage is extended from the lower end of first silence space aspect the 5th.And second refrigerant passage is extended from the lower end of second silence space.
In this refrigerating plant, first refrigerant passage is extended from the lower end of first silence space, and second refrigerant passage is extended from the lower end of second silence space.Therefore, in this refrigerating plant, refrigerator oil can not accumulate in first silence space and second silence space.
For the described refrigerating plant of tenth aspect present invention, in the described refrigerating plant in arbitrary aspect aspect the 5th to the 9th aspect, in access, be filled with mesh members.
In this refrigerating plant, in access, be filled with mesh members.Therefore, in this refrigerating plant, can prevent in access, to produce back wave.
The present invention the tenth described refrigerating plant on the one hand has first refrigerant passage, π type muffler and second refrigerant passage.π type muffler has first silence space, second silence space and access.First silence space is communicated with first refrigerant passage.Second silence space is configured in the side of first silence space.Access extends to the upper end of second silence space from the lower end of first silence space through the outside of first silence space and is communicated with second silence space.Second refrigerant passage is communicated with second silence space.In addition, in this refrigerating plant, cold-producing medium flows according to the order of first refrigerant passage → π type muffler → second refrigerant passage.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And in this refrigerating plant, second silence space is configured in the side of first silence space, and access extends to the upper end of second silence space from the lower end of first silence space through the outside of first silence space and is communicated with second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, can shorten the total length of π type muffler, can prolong the binding road.In π type muffler, link Lu Yuechang, the effect that pressure fluctuation reduces is big more.That is, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, can enlarge the selection of the configuration of π type muffler, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
For the described refrigerating plant in the present invention the 12 aspect, in the described refrigerating plant of the tenth one side, second refrigerant passage is extended from the lower end of second silence space.
In this refrigerating plant, second refrigerant passage is extended from the lower end of second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.
The described refrigerating plant in the present invention the 13 aspect has first refrigerant passage, π type muffler and second refrigerant passage.π type muffler has first silence space, second silence space and access.First silence space is communicated with first refrigerant passage.Second silence space is configured in the side of first silence space.Access extends to the upper end of second silence space from the inside of first silence space through the upper end and is communicated with second silence space.Second refrigerant passage is communicated with second silence space.In addition, in this refrigerating plant, cold-producing medium can flow according to the order of first refrigerant passage → π type muffler → second refrigerant passage, also can be mobile according to the order of second refrigerant passage → π type muffler → first refrigerant passage on the contrary.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And in this refrigerating plant, second silence space is configured in the side of first silence space, and access extends to the upper end of second silence space from the inside of first silence space through the upper end and is communicated with second silence space.Therefore, in this refrigerating plant,, can prolong the binding road simultaneously even under the situation that second silence space flows, also can prevent that refrigerator oil from accumulating in first silence space from first silence space at cold-producing medium.In π type muffler, link Lu Yuechang, it is big more that pressure fluctuation reduces effect.That is, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, needn't change the whole size of π type muffler simultaneously and just can increase the effect that pressure fluctuation reduces.
For the described refrigerating plant in the present invention the 14 aspect, in the described refrigerating plant, access extends to the inside of second silence space from the upper end of second silence space aspect the 13.
In this refrigerating plant, access extends to the inside of second silence space from the upper end of second silence space.Therefore, in this refrigerating plant, can further only prolong the size that links the road and needn't change π type muffler integral body.Therefore, in this refrigerating plant, needn't change the whole size of π type muffler and just can further increase the effect that pressure fluctuation reduces.
For the described refrigerating plant in the present invention the 15 aspect, aspect the 13 or in the described refrigerating plant in the 14 aspect, second refrigerant passage is extended from the lower end of second silence space.
In this refrigerating plant, second refrigerant passage is extended from the lower end of second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.
The described refrigerating plant in the present invention the 16 aspect has first refrigerant passage, π type muffler and second refrigerant passage.π type muffler has first silence space, second silence space and access.First silence space is communicated with first refrigerant passage.Second silence space is configured in the side of first silence space.Access extends to the lower side of second silence space and is communicated with second silence space from the lower side of first silence space.Second refrigerant passage is connected the lower side of second silence space and is communicated with second silence space.In addition, in this refrigerating plant, cold-producing medium flows according to the order of first refrigerant passage → π type muffler → second refrigerant passage.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And; In this refrigerating plant; Second silence space is configured in the side of first silence space; Access extends to the lower side of second silence space and is communicated with second silence space from the lower side of first silence space, and second refrigerant passage is connected the lower side of second silence space and is communicated with second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space and second silence space.
For the described refrigerating plant in the present invention the 17 aspect, aspect the 16 in the described refrigerating plant, access is the lower side through first silence space and second silence space and extend to the inside of second silence space from the inside of first silence space.
In this refrigerating plant, access is the lower side through first silence space and second silence space and extend to the inside of second silence space from the inside of first silence space.Therefore, in this refrigerating plant, can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, link Lu Yuechang, it is big more that pressure fluctuation reduces effect.That is, in this refrigerating plant, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
For the described refrigerating plant of the present invention's the tenth eight aspect, aspect the 16 or in the described refrigerating plant in the 17 aspect, first refrigerant passage is connected the lower side of first silence space.
In this refrigerating plant, first refrigerant passage is connected the lower side of first silence space.Therefore; In this refrigerating plant; No matter be under the situation that cold-producing medium flows according to the order of first refrigerant passage → π type muffler → second refrigerant passage; Still under the situation that cold-producing medium flows according to the order of second refrigerant passage → π type muffler → first refrigerant passage, can both prevent that refrigerator oil from accumulating in first silence space and second silence space.
The described refrigerating plant in the present invention the 19 aspect has first refrigerant passage, π type muffler, second refrigerant passage, first oil outlet passage and second oil outlet passage.π type muffler has first silence space, second silence space and access.First silence space is communicated with first refrigerant passage.Second silence space is configured in the side of first silence space.Access extends to the side of second silence space from the side of first silence space and is communicated with second silence space.Second refrigerant passage is communicated with second silence space.First oil outlet passage extends from the lower end of first silence space.Second oil outlet passage extends from the lower end of second silence space.In addition, in this refrigerating plant, cold-producing medium can flow according to the order of first refrigerant passage → π type muffler → second refrigerant passage, also can be mobile according to the order of second refrigerant passage → π type muffler → first refrigerant passage on the contrary.
In this refrigerating plant, be assembled with π type muffler.Therefore, in this refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And in this refrigerating plant, first oil outlet passage extends from the lower end of first silence space, and second oil outlet passage extends from the lower end of second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space and second silence space.
For the described refrigerating plant in the present invention the 20 aspect, in the described refrigerating plant, second oil outlet passage and first oil outlet passage collaborate aspect the 19.
In this refrigerating plant, second oil outlet passage and first oil outlet passage interflow.Therefore, in this refrigerating plant, the refrigerator oil concentrated area that is transported to π type muffler is turned back in compressing mechanism etc.
In the described refrigerating plant of first aspect present invention, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And, in this refrigerating plant, can prevent that refrigerator oil from accumulating in the π type muffler.
In the described refrigerating plant of second aspect present invention, can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, link Lu Yuechang, it is big more that pressure fluctuation reduces effect.That is, in this refrigerating plant, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
In the described refrigerating plant of third aspect present invention, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, and can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, link Lu Yuechang, it is big more that pressure fluctuation reduces effect.That is, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, and needn't change the whole size of π type muffler and just can increase the effect of pressure fluctuation reduction.And, in this refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in the π type muffler, and needn't change the whole size of π type muffler and just can increase the effect of pressure fluctuation reduction.
In the described refrigerating plant of fourth aspect present invention, needn't change the whole size of π type muffler, can only further prolong the binding road.Therefore, in this refrigerating plant, needn't change the whole size of π type muffler and just can further increase the effect that pressure fluctuation reduces.
In the described refrigerating plant of fifth aspect present invention, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And, in this refrigerating plant, can shorten the total length of π type muffler.Therefore, in this refrigerating plant, can enlarge the selection of the configuration of π type muffler.
In the described refrigerating plant of sixth aspect present invention, cold-producing medium from second silence space under the situation that first silence space flows, can prevent that refrigerator oil from accumulating in first silence space.
In the described refrigerating plant of seventh aspect present invention, cold-producing medium from first silence space under the situation that second silence space flows, can prevent that refrigerator oil from accumulating in second silence space.
In the described refrigerating plant of eighth aspect present invention, can utilize simple π type muffler.Therefore, this refrigerating plant can expect to reduce manufacturing cost.
In the described refrigerating plant of nineth aspect present invention, can prevent that refrigerator oil from accumulating in first silence space and second silence space.
In the described refrigerating plant of tenth aspect present invention, can prevent in access, to produce back wave.
In the present invention the tenth on the one hand in the described refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And in this refrigerating plant, second silence space is configured in the side of first silence space, and access extends to the upper end of second silence space from the lower end of first silence space through the outside of first silence space and is communicated with second silence space.Therefore, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, can shorten the total length of π type muffler, can prolong the binding road.In π type muffler, link Lu Yuechang, it is big more that pressure fluctuation reduces effect.That is, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, can enlarge the selection of the configuration of π type muffler, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
Aspect the present invention the 12, in the described refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.
Aspect the present invention the 13 in the described refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And, in this refrigerating plant, even cold-producing medium from first silence space under the situation that second silence space flows, can prevent that also refrigerator oil from accumulating in first silence space, can prolong simultaneously and link the road.In π type muffler, link Lu Yuechang, the effect that pressure fluctuation reduces is big more.That is, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space, and needn't change the whole size of π type muffler and just can increase the effect of pressure fluctuation reduction.
Aspect the present invention the 14, in the described refrigerating plant, the whole size of π type muffler needn't be changed, the binding road can be further only prolonged.Therefore, in this refrigerating plant, needn't change the whole size of π type muffler and just can further increase the effect that pressure fluctuation reduces.
Aspect the present invention the 15, in the described refrigerating plant, can prevent that refrigerator oil from accumulating in second silence space.
Aspect the present invention the 16 in the described refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space and second silence space.
Aspect the present invention the 17, in the described refrigerating plant, can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, link Lu Yuechang, the effect that pressure fluctuation reduces is big more.That is, in this refrigerating plant, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
In the described refrigerating plant of the present invention's the tenth eight aspect; No matter be under the situation that cold-producing medium flows according to the order of first refrigerant passage → π type muffler → second refrigerant passage; Still under the situation that cold-producing medium flows according to the order of second refrigerant passage → π type muffler → first refrigerant passage, can both prevent that refrigerator oil from accumulating in first silence space and second silence space.
Aspect the present invention the 19 in the described refrigerating plant, even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium.And, in this refrigerating plant, can prevent that refrigerator oil from accumulating in first silence space and second silence space.
Aspect the present invention the 20, in the described refrigerating plant, the refrigerator oil concentrated area that is transported to π type muffler is turned back in compressing mechanism etc.
Description of drawings
Fig. 1 is the refrigerant loop figure of the aircondition that relates to of embodiment of the present invention.
Fig. 2 is the longitudinal section that is assembled in the π type muffler in the refrigerant loop of the aircondition that embodiment of the present invention relates to.
Fig. 3 is the longitudinal section of the π type muffler that relates to of variation (A).
Fig. 4 is the longitudinal section of the π type muffler that relates to of variation (A).
Fig. 5 is the longitudinal section of the π type muffler that relates to of variation (B).
Fig. 6 is the longitudinal section of the π type muffler that relates to of variation (B).
Fig. 7 is the longitudinal section of the π type muffler that relates to of variation (B).
Fig. 8 is the longitudinal section of the π type muffler that relates to of variation (C).
Fig. 9 is the longitudinal section of the π type muffler that relates to of variation (D).
Figure 10 is the longitudinal section of the π type muffler that relates to of variation (E).
Figure 11 is the longitudinal section of the π type muffler that relates to of variation (F).
Figure 12 is the longitudinal section of the π type muffler that relates to of variation (F).
Figure 13 is the longitudinal section of the π type muffler that relates to of variation (G).
Symbol description
1: aircondition (refrigerating plant);
20,20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h, 20i, 20j, 20k: π type muffler;
201,201c, 201i: first silence space;
202,202c, 202i: second silence space;
203,203a, 203b, 203c, 203i, 203j, 203k: access;
204,204e, 204h, 203g, 203f: first refrigerant passage;
205,205e, 205h: second refrigerant passage;
206: spill port;
206k: first oil outlet passage;
207k: second oil outlet passage.
The specific embodiment
< formation of aircondition >
The summary refrigerant loop 2 of the aircondition 1 that embodiment of the present invention relates to shown in Fig. 1.
This aircondition 1 be with carbon dioxide as cold-producing medium and can carry out cooling operation and heat the aircondition of running, mainly constitute by refrigerant loop 2, Air Blast fan 26,32, control device 23, high-pressure sensor 21, temperature sensor 22 and middle pressure pressure sensor 24 etc.
Compressor 11, π type muffler 20, No. four transfer valves 12, outdoor heat converter 13, first electric expansion valve 15, reservoir 16, second electric expansion valve 17 and indoor heat converter 31 in refrigerant loop 2, mainly be equipped with; As shown in Figure 1, each device connects via coolant conduits.
And then in this embodiment, aircondition 1 is the aircondition of divergence type, can be described as by constituting with lower component: indoor unit 30, and it mainly has indoor heat converter 31 and indoor fan 32; Outdoor unit 10, it mainly has compressor 11, π type muffler 20, No. four transfer valves 12, outdoor heat converter 13, first electric expansion valve 15, reservoir 16, second electric expansion valve 17, high-pressure sensor 21, middle pressure pressure sensor 24, temperature sensor 22 and control device 23; First connecting duct 41, it connects the conduit such as refrigerant liquid of indoor unit 30 and the conduits such as refrigerant liquid of outdoor unit 10; And second connecting duct 42, it connects the conduit such as refrigerant gas of indoor unit 30 and the conduits such as refrigerant gas of outdoor unit 10.In addition; The conduits such as refrigerant liquid of outdoor unit 10 are connected with first draught excluder 18 of first connecting duct 41 via outdoor unit 10, and the conduits such as refrigerant gas of outdoor unit 10 are connected with second draught excluder 19 of second connecting duct 42 via outdoor unit 10.
(1) indoor unit
Indoor unit 30 mainly has indoor heat converter 31 and indoor fan 32 etc.
Indoor heat converter 31 is that to be used to make the air in the air conditioning chamber be the heat exchanger that carries out heat exchange between room air and the cold-producing medium.
Indoor fan 32 be used for the air in the air conditioning chamber be taken in the unit 30, and will to have carried out air after the heat exchange by indoor heat converter 31 and cold-producing medium be that tempered air is seen the fan to the air conditioning chamber once more off.
And then; This indoor unit 30 is owing to adopt this structure; Thereby when cooling operation; Can make to be taken into to the room air of inside and flowing liquid cold-producing medium in indoor heat converter 31 and carry out heat exchange and generate tempered air (cold air), heat when running, can make to be taken into to the room air of inside and the supercritical refrigerant that in indoor heat converter 31, flows and carry out heat exchange and generate tempered air (heating installation) by indoor fan 32 by indoor fan 32.
(2) outdoor unit
Outdoor unit 10 mainly has compressor 11, π type muffler 20, No. four transfer valves 12, outdoor heat converter 13, first electric expansion valve 15, reservoir 16, second electric expansion valve 17, outdoor fan 26, control device 23, high-pressure sensor 21, temperature sensor 22 and middle pressure pressure sensor 24 etc.
Compressor 11 is like lower device: be used for sucking the gas refrigerant of the low pressure that flows at suction line, and it is compressed make it form supercriticality, then it is expelled to discharge pipe.In addition, in this embodiment, this compressor 11 is the revolution type compressors that become the ability formula.
As shown in Figure 1, π type muffler 20 is configured between the discharge side and No. four transfer valves 12 of compressor 11.As shown in Figure 2, this π type muffler 20 is made up of first silence space 201, second silence space 202 and the access 203 that is communicated with first silence space 201 and second silence space 202.In addition; In the aircondition 1 that this embodiment relates to; The discharge road of compressor 11 is connected with first silence space 201 via first refrigerant passage 204, and the heat transfer circuit of outdoor heat converter 13 or indoor heat converter 31 is connected with second silence space 202 via second refrigerant passage 205.That is, cold-producing medium flows according to the order of first silence space, 201 → access, 203 → the second silence space 202 all the time.First silence space 201 is spaces of substantial cylindrical, and it is connected with refrigerant passage 204 in axial upper end, is connected with access 203 in axial lower end.Second silence space 202 is spaces of substantial cylindrical, and it is connected with access 203 in axial upper end, is connected with refrigerant passage 205 in axial lower end.Access 203 is paths of the little substantial cylindrical of the radius of radius ratio first silence space 201 and second silence space 202, is connected with second silence space 202 with first silence space 201 in both sides.In addition, in the π type muffler 20 that this embodiment relates to, the axle of first silence space 201, second silence space 202 and access 203 overlaps.And then the length of this access 203 compares S 1/ 2 (1/V 1+ 1/V 2) (c/ π N Min) 2Long and compare c/2f tShort.In addition, here, S 1Be the sectional area of access 203, V 1Be the volume of first silence space 201, V 2Be the volume of second silence space 202, c is that (when pressure was 10MPa, the density of carbon dioxide was 221.6kg/m for velocity of sound in the carbon dioxide 3, velocity of sound is 252m/sec), π is a pi, N MinBe the minimum speed of compressor 11, f tFor target reduces highest frequency.In addition, in the aircondition 1 that this embodiment relates to, this π type muffler 20 is accommodated in the outdoor unit 10 with the mode that first silence space 201 and second silence space 202 are arranged above and below along vertical direction.
No. four transfer valves 12 are the valves that are used for switching accordingly with each running the flow direction of cold-producing medium; The discharge side that when cooling operation, can connect compressor 11 is with the high temperature side of outdoor heat converter 13, be connected the suction side of compressor 11 and the gas side of indoor heat converter 31 simultaneously, and the discharge side that when heating running, can connect compressor 11 is with second draught excluder 19, be connected the suction side of compressor 11 and the gas side of outdoor heat converter 13 simultaneously.
Outdoor heat converter 13 can make from the supercritical refrigerant cooling of the high pressure of compressor 11 discharges as thermal source with the air outside the air conditioning chamber when cooling operation, when heating running, can make the liquid refrigerant evaporates of returning from indoor heat converter 31.
First electric expansion valve 15 is to be used for parts that the supercritical refrigerant (during cooling operation) that flows out from the low temperature side of outdoor heat converter 13 or the liquid refrigerant that flows into through reservoir 16 (heating when turning round) are reduced pressure.
Reservoir 16 is the parts that are used for preserving according to operation mode or air-conditioning load remaining cold-producing medium.
Second electric expansion valve 17 is to be used for the liquid refrigerant (during cooling operation) that flows into through reservoir 16 or the parts that reduce pressure from the supercritical refrigerant (when heating running) that the low temperature side of indoor heat converter 31 flows out.
Outdoor fan 26 is to be used for outdoor air is taken in the unit 10, also will have carried out the fan that heat exchange air is afterwards discharged by outdoor heat converter 13 and cold-producing medium.
High-pressure sensor 21 is arranged on the discharge side of compressor 11.
Temperature sensor 22 is arranged on the outdoor heat converter side of first electric expansion valve 15.
Middle pressure pressure sensor 24 is arranged between first electric expansion valve 15 and the reservoir 16.
Control device 23 is connected with communications such as high-pressure sensor 21, temperature sensor 22, middle pressure pressure sensor 24, first electric expansion valve 15 and second electric expansion valves 17, and the high-pressure information that sends according to the temperature information that sends from temperature sensor 22, from high-pressure sensor 21, the middle pressure pressure information that sends from middle pressure pressure sensor 24 are controlled the aperture of first electric expansion valve 15 and second electric expansion valve 17.
< action of aircondition >
Use Fig. 1 that the running action of aircondition 1 is described.As stated, this aircondition 1 can carry out cooling operation and heat running.
(1) cooling operation
When cooling operation, No. four transfer valves 12 become the state shown in the solid line of Fig. 1, that is, and and the state that the discharge side that becomes compressor 11 is connected with the high temperature side of outdoor heat converter 13 and the suction side of compressor 11 is connected with second draught excluder 19.And at this moment, first draught excluder 18 and second draught excluder 19 are open mode.
Under the state of this refrigerant loop 2; When starting compressor 11, gas refrigerant is inhaled in the compressor 11, becomes after the supercriticality being compressed; Be transported to outdoor heat converter 13 via No. four transfer valves 12, and in outdoor heat converter 13, be cooled.In addition, at this moment, the pressure fluctuation of cold-producing medium decays through π type muffler 20.
And then this cooled supercritical refrigerant is transported to first electric expansion valve 15.And then, be transported to supercritical refrigerant in first electric expansion valve 15 and be depressurized and become saturation state, be transported to second electric expansion valve 17 via reservoir 16 then.The cold-producing medium that is transported to the saturation state in second electric expansion valve 17 offers indoor heat converter 31 via first draught excluder 18 become liquid refrigerant being depressurized after, room air is cooled off evaporate simultaneously and become gas refrigerant.
And then this gas refrigerant is inhaled in the compressor 11 via second draught excluder 19 and No. four transfer valves 12 once more.Carry out cooling operation like this.
(2) heat running
Heating when running, No. four transfer valves 12 become the state shown in the dotted line of Fig. 1, that is, and and the state that the discharge side that becomes compressor 11 is connected with second draught excluder 19 and the suction side of compressor 11 is connected with the gas side of outdoor heat converter 13.And at this moment, first draught excluder 18 and second draught excluder 19 are open mode.
Under the state of this refrigerant loop 2, when starting compressor 11, gas refrigerant is inhaled in the compressor 11, becomes after the supercriticality being compressed, and offers indoor heat converter 31 via No. four transfer valves 12 and second draught excluder 19.In addition, at this moment, the pressure fluctuation of cold-producing medium decays through π type muffler 20.
And then this supercritical refrigerant heats simultaneously room air in indoor heat converter 31 and is cooled.Cooled supercritical refrigerant is transported to second electric expansion valve 17 through first draught excluder 18.The supercritical refrigerant that is transported to second electric expansion valve 17 is depressurized and becomes saturation state, is transported to first electric expansion valve 15 via reservoir 16 then.The cold-producing medium that is transported to the saturation state of first electric expansion valve 15 becomes being depressurized after the liquid refrigerant, is transported to outdoor heat converter 13, evaporation in outdoor heat converter 13 and become gas refrigerant.And then this gas refrigerant is inhaled in the compressor 11 via No. four transfer valves 12 once more.Heat running like this.
< characteristic of aircondition >
(1)
In the aircondition 1 that this embodiment relates to, π type muffler 20 is connected with the discharge pipe of compressor 11.Therefore, in this aircondition 1, can reduce pressure fluctuation fully.
(2)
In the aircondition 1 that this embodiment relates to, this π type muffler 20 is incorporated in the outdoor unit 10 with the mode that first silence space 201 and second silence space 202 are arranged above and below along vertical direction.Therefore, in this aircondition 1, can prevent that refrigerator oil from accumulating in the π type muffler 20.
(3)
In the π type muffler 20 that this embodiment relates to, the length of this access compares S 1/ 2 (1/V 1+ 1/V 2) (c/ π N Min) 2Long and compare c/2f tShort.Therefore, in this aircondition 1, the cut-off frequency that can make π type muffler 20 is below the minimum speed of compressing mechanism, can reduce simultaneously than target and reduce highest frequency f tLittle frequency.
< variation >
(A)
In the aircondition 1 that embodiment in front relates to; Adopted π type muffler 20 with access 203; Said access 203 from the lower end of first silence space 201 along the upper end that extends axially and be connected second silence space 202 of first silence space 201, but also can replace this π type muffler 20 and use π type muffler 20a shown in Figure 3.In this π type muffler 20a, connect the upper end of second silence space 202 and be inserted into the inside of second silence space 202 from the lower end of first silence space 201 along the axially extended access 203a of first silence space 201.If adopt this π type muffler 20a, can only prolong the binding road, and needn't change the whole size of π type muffler.In π type muffler, link Lu Yuechang, it is big more that pressure fluctuation reduces effect.That is, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
And, also can adopt π type muffler 20b shown in Figure 4.In this π type muffler 20b; Access 203b extends towards the outside through the lower end of first silence space 201 from the inside of first silence space 201 along the axle of first silence space 201, and the upper end that further connects second silence space 202 extends to the inside of second silence space 202.And then in this π type muffler 20b, the bottom of the access 203b in first silence space 201 is provided with spill port 206.If adopt this π type muffler 20b, can prevent that then refrigerator oil from accumulating in the π type muffler, and can only prolong the size that links the road and needn't change π type muffler integral body.In π type muffler, the effect that links Lu Yuechang pressure fluctuation reduction is big more.That is, can prevent that refrigerator oil from accumulating in the π type muffler, and, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
(B)
In the aircondition 1 that embodiment in front relates to; Adopted the axle of first silence space 201, second silence space 202 and access 203 to overlap point-blank and towards the π of vertical direction type muffler 20, but also can replace this π type muffler 20 and adopt π type muffler 20c shown in Figure 5.In this π type muffler 20c, the first silence space 201c and the second silence space 202c approaching configuration in side each other, the axle of two silence space 201c, 202c does not still overlap point-blank along vertical direction.And then in this π type muffler 20c, access 203c is the U word shape, and extends to the lower end of the second silence space 202c from the lower end of the first silence space 201c.If adopt this π type muffler 20c, then can shorten the total length of π type muffler.Therefore, can enlarge the selection of the configuration of the π type muffler in the outdoor unit 10.
And, also can adopt π type muffler 20d shown in Figure 6.This π type muffler 20d fills the parts that mesh members forms in the access 203c of π type muffler 20c shown in Figure 5.If adopt this π type muffler 20d, further, can prevent in access 203c, to produce back wave.
And, also can adopt π type muffler 20e shown in Figure 7.This π type muffler 20e is inserted into the parts that the inside of the first silence space 201c and the second silence space 202c of π type muffler 20c shown in Figure 5 forms with the first refrigerant passage 204e and the second refrigerant passage 205e.If adopt this π type muffler 20e, refrigerator oil can not accumulated among the first silence space 201c and the second silence space 202c.
(C)
In the aircondition 1 that embodiment in front relates to; Adopted the axle of first silence space 201, second silence space 202 and access 203 to overlap point-blank and towards the π of vertical direction type muffler 20, but also can replace this π type muffler 20 and adopt π type muffler 20f shown in Figure 8.In this π type muffler 20f, the first silence space 201c and the second silence space 202c approaching configuration in side each other, the axle of two silence space 201c, 202c does not still overlap point-blank along vertical direction.And then; In this π type muffler 20f; Access 203f is the U word shape, and extends to the upper end of the second silence space 202c from the internal run-through upper end of the first silence space 201c, and further connects the inside that second silence space 202c upper end extends to the second silence space 202c.If adopt this π type muffler 20f; Then can shorten the total length of π type muffler; Can prevent that refrigerator oil from accumulating among the first silence space 201c and the second silence space 202c, can only prolong the size that links the road and needn't change π type muffler integral body.Therefore; Can enlarge the selection of the configuration of the π type muffler in the outdoor unit 10; Can prevent that refrigerator oil from accumulating among the first silence space 201c and the second silence space 202c, in addition, needn't change the whole size of π type muffler and just can increase the effect that pressure fluctuation reduces.
(D)
In the aircondition 1 that embodiment in front relates to; Adopted the axle of first silence space 201, second silence space 202 and access 203 to overlap point-blank and towards the π of vertical direction type muffler 20, but also can replace this π type muffler 20 and adopt π type muffler 20g shown in Figure 9.In this π type muffler 20g, the first silence space 201c and the second silence space 202c approaching configuration in side each other, the axle of two silence space 201c, 202c does not still overlap point-blank along vertical direction.And then in this π type muffler 20g, access 203g is S word shape, and extends to the upper end of the second silence space 202c from the lower end of the first silence space 201c.If adopt this π type muffler 20g, can prevent that then refrigerator oil from accumulating in the π type muffler, can shorten the total length of π type muffler, and needn't change the whole size of π type muffler and just can increase access.In π type muffler, access is long more, and it is big more that pressure fluctuation reduces effect.That is, can prevent that refrigerator oil from accumulating in the π type muffler, can enlarge the selection of the configuration of the π type muffler in the outdoor unit 10, and needn't change the whole size of π type muffler and just can increase the effect of pressure fluctuation reduction.In addition, the access 203g that extends from the lower end of the first silence space 201c also can connect the upper end of the second silence space 202c and extend to the inside of the second silence space 202c.
(E)
In the aircondition 1 that embodiment in front relates to; Adopted the axle of first silence space 201, second silence space 202 and access 203 to overlap point-blank and towards the π of vertical direction type muffler 20, but also can replace this π type muffler 20 and adopt π type muffler 20h shown in Figure 10.In this π type muffler 20h, the first silence space 201c and the second silence space 202c approaching configuration in side each other, the axle of two silence space 201c, 202c does not still overlap point-blank along vertical direction.And then in this π type muffler 20h, the first refrigerant passage 204h is connected the lower end of the first silence space 201c, and the second refrigerant passage 205h is connected the lower end of the second silence space 202c.And then in addition, in this π type muffler 20h, access 203c is the U word shape, and extends to the lower end of the second silence space 202c from the lower end of the first silence space 201c.If adopt this π type muffler 20h, can prevent that then refrigerator oil from accumulating in the π type muffler, can shorten the total length of π type muffler simultaneously.Therefore, can prevent that refrigerator oil from accumulating in the π type muffler, can enlarge the selection of the configuration of the π type muffler in the outdoor unit 10 simultaneously.
(F)
In the aircondition 1 that embodiment in front relates to; Adopt the axle of first silence space 201, second silence space 202 and access 203 to overlap point-blank and towards the π of vertical direction type muffler 20, but also can replace this π type muffler 20 to adopt π type muffler 20i shown in Figure 11.This π type muffler 20i overlaps point-blank with the axle of the first silence space 201i and the second silence space 202i and is accommodated in the outdoor unit 10 towards the mode of horizontal direction.And then in this π type muffler 20i, first refrigerant passage 204 is connected the foot of the outer end of the first silence space 201i, and second refrigerant passage 205 is connected the foot of the outer end of the second silence space 202i.And then in addition, in this π type muffler 20i, access 203i connects the foot of the inner of foot and the second silence space 202i of the inner of the first silence space 201i.If adopt this π type muffler 20i, can prevent that then refrigerator oil from accumulating in the π type muffler.
And, also can adopt π type muffler 20j shown in figure 12.In this π type muffler 20j, access 203j is from the foot of the inner of the foot of the inner of the internal run-through first silence space 201i of the first silence space 201i and the second silence space 202i and extend to the inside of the second silence space 202i.If adopt this π type muffler 20j, can prevent that then refrigerator oil from accumulating in the π type muffler, needn't change the whole size of π type muffler simultaneously and just can prolong the binding road.In π type muffler, link Lu Yuechang, the effect that pressure fluctuation reduces is big more.That is, can prevent that refrigerator oil from accumulating in the π type muffler, and needn't change the whole size of π type muffler and just can increase the effect of pressure fluctuation reduction.
(G)
In the aircondition 1 that embodiment in front relates to; Adopted the axle of first silence space 201, second silence space 202 and access 203 to overlap point-blank and towards the π of vertical direction type muffler 20, but also can replace this π type muffler 20 and adopt π type muffler 20k shown in Figure 13.This π type muffler 20k overlaps point-blank with the axle of the first silence space 201i and the second silence space 202i and access 203k and is accommodated in the outdoor unit 10 towards the mode of horizontal direction.And then in this π type muffler 20k, the first oil outlet passage 206k extends from the lower end of the first silence space 201i, and the second oil outlet passage 207k extends from the lower end of the second silence space 202i.In addition, the first oil outlet passage 206k collaborates halfway with the second oil outlet passage 207k and is connected via the suction line of capillary with compressor 11.If adopt this π type muffler 20k, can prevent that then refrigerator oil from accumulating in the π type muffler.In addition, access 203k also can be from the center of the inner of the center of the inner of the internal run-through first silence space 201i of the first silence space 201i and the second silence space 202i and is extended to the inside of the second silence space 202i.
(H)
In the aircondition 1 that embodiment in front relates to, π type muffler 20 is connected with the discharge pipe of compressor 11, but also can replace in this π type muffler 20 being connected on the suction line of compressor 11.And, also can on the discharge pipe of compressor 11 and suction line, all be connected π type muffler 20.
(I)
In the aircondition 1 that embodiment in front relates to; Though do not mention especially; But in refrigerant loop 2, exist under the situation of containers such as oil eliminator, gas-liquid separator, reservoir, also can be with their inner space as first silence space or the second silence space utilization.Like this, refrigerant loop 2 is simplified.
(J)
In the aircondition 1 that embodiment in front relates to, adopted the π type muffler 20 that has two silence space 201,202, but replaced, also can use the π type muffler that has three above silence space in this.Like this, can expect the effect that further pressure fluctuation reduces.
(K)
In the aircondition 1 that embodiment in front relates to, adopted the revolution type compressor that becomes the ability formula, still, replaced also can adopting the revolving compressor of constant speed in this.
(L)
In the aircondition 1 that embodiment in front relates to, adopted carbon dioxide, still, replaced also can adopting cold-producing mediums such as R22 or R410A in this as cold-producing medium.By the way, its density is 56.4kg/m when pressure is 1.5MPa 3, velocity of sound is 169m/sec.And its density is 83.3kg/m when pressure is 2.4MPa 3, velocity of sound is 174m/sec.
(M)
In the π type muffler 20 that embodiment in front relates to, first silence space 201 be shaped as cylindrical shape, still, the shape of first silence space 201 does not have particular determination in the present invention, for example can be cuboid or cube etc. yet.
(N)
In the π type muffler 20 that embodiment in front relates to, second silence space 202 be shaped as cylindrical shape, still, the shape of second silence space 202 does not have particular determination in the present invention, for example can be cuboid or cube etc. yet.
(O)
In the π type muffler 20 that embodiment in front relates to; First silence space 201 forms with second silence space 202 that shape is identical, volume is identical; But the shape of first silence space 201 and second silence space 202 also can be different with volume in the present invention.
(P)
In the π type muffler 20 that embodiment in front relates to, access 203 be shaped as cylindrical shape, still, the shape of access 203 does not have particular determination in the present invention, for example can be cuboid etc. yet.
Utilizability on the industry
The refrigerating plant that the present invention relates to has following characteristics: even adopting carbon dioxide etc. also can reduce pressure fluctuation fully under as the situation of cold-producing medium, therefore be applicable to and adopt the refrigerating plant as cold-producing medium such as carbon dioxide.

Claims (9)

1. a refrigerating plant is characterized in that, said refrigerating plant has:
First refrigerant passage (204,204e, 204h);
π type muffler (20c, 20d, 20e, 20h), it has: first silence space (201c) that is communicated with said first refrigerant passage; Be configured in second silence space (202c) of the side of said first silence space; And access (203c), it extends to the lower end of said second silence space from the lower end of said first silence space through the outside of said first silence space and is communicated with said second silence space;
Second refrigerant passage that is communicated with said second silence space (205,205e, 205h);
Compressor;
Outdoor heat converter;
Expansion valve;
Indoor heat converter; And
No. four transfer valves, it is used to switch cooling operation and heats running,
Said π type muffler is configured between the discharge side and said No. four transfer valves of said compressor, or the suction line of said compressor on.
2. refrigerating plant according to claim 1, wherein,
Said first refrigerant passage (204e) inserts and extends to the inside of said first silence space from the upper end of said first silence space.
3. refrigerating plant according to claim 1 and 2, wherein,
Said second refrigerant passage (205e) inserts and extends to the inside of said second silence space from the upper end of said second silence space.
4. refrigerating plant according to claim 1, wherein,
Said first refrigerant passage (204) is extended from the upper end of said first silence space,
Said second refrigerant passage (205) is extended from the upper end of said second silence space.
5. refrigerating plant according to claim 1, wherein,
Said first refrigerant passage (204h) is extended from the lower end of said first silence space,
Said second refrigerant passage (205h) is extended from the lower end of said second silence space.
6. refrigerating plant according to claim 1, wherein,
In said access, be filled with mesh members (207).
7. a refrigerating plant is characterized in that, said refrigerating plant has:
First refrigerant passage (204);
π type muffler (20f), it has: first silence space (201c) that is communicated with said first refrigerant passage; Be configured in second silence space (202c) of the side of said first silence space; And access (203f), its inside from said first silence space extends to the upper end of said second silence space through the upper end and is communicated with said second silence space;
Second refrigerant passage (205) that is communicated with said second silence space;
Compressor;
Outdoor heat converter;
Expansion valve;
Indoor heat converter; And
No. four transfer valves, it is used to switch cooling operation and heats running,
Said π type muffler is configured between the discharge side and said No. four transfer valves of said compressor, or the suction line of said compressor on.
8. refrigerating plant according to claim 7, wherein,
Said access extends to the inside of said second silence space from the upper end of said second silence space.
9. according to claim 7 or 8 described refrigerating plants, wherein,
Said second refrigerant passage is extended from the lower end of said second silence space.
CN2007800292296A 2006-08-30 2007-08-28 Refrigeration system Expired - Fee Related CN101501419B (en)

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PCT/JP2007/066616 WO2008026569A1 (en) 2006-08-30 2007-08-28 Refrigeration system

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072599B (en) * 2011-01-24 2013-03-27 合肥美的荣事达电冰箱有限公司 Refrigeration equipment and transition pipe for same
CN103542650B (en) * 2013-11-07 2016-01-20 芜湖汉峰科技有限公司 A kind of reservoir and production method thereof
JP2019095118A (en) * 2017-11-21 2019-06-20 三菱重工サーマルシステムズ株式会社 Refrigeration machine
CN109780361B (en) * 2019-01-28 2020-10-09 大连大学 Pipeline wide-frequency fluid pressure pulsation damper
KR102286976B1 (en) 2019-07-08 2021-08-05 엘지전자 주식회사 Air conditioner
EP3828413B1 (en) * 2019-11-28 2023-03-22 Daikin Europe N.V. Heat pump comprising a muffler
CN111472958B (en) * 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 Silencer structure, compressor and refrigerator with same

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153695A (en) * 1933-11-14 1939-04-11 Nash Kelvinator Corp Air conditioning system
JPS5044959U (en) * 1973-08-24 1975-05-07
JPS5514021U (en) * 1978-07-12 1980-01-29
JPS6039051Y2 (en) * 1979-04-12 1985-11-22 株式会社東芝 Strainer muffler
JPS5857672U (en) * 1981-10-15 1983-04-19 三菱電機株式会社 Refrigeration equipment
JPS5883067U (en) * 1981-11-30 1983-06-04 カルソニックカンセイ株式会社 Silencer for automotive air conditioning equipment
JPH0610875A (en) 1992-06-24 1994-01-21 Matsushita Refrig Co Ltd Silencer for compressor
JP3020362B2 (en) * 1992-10-13 2000-03-15 松下冷機株式会社 Compressor silencer
JPH06273002A (en) * 1993-03-18 1994-09-30 Toshiba Corp Refrigeration cycle
JPH06280553A (en) * 1993-03-31 1994-10-04 Honda Motor Co Ltd Silencer
JPH07133965A (en) * 1993-11-10 1995-05-23 Sanyo Electric Co Ltd Refrigerating apparatus
JP3449816B2 (en) * 1995-01-19 2003-09-22 イビデン株式会社 Silencer
JPH09318197A (en) * 1996-05-30 1997-12-12 Hitachi Ltd Freezing cycle of refrigerator
JPH11325655A (en) * 1998-05-14 1999-11-26 Matsushita Seiko Co Ltd Silencer and air conditioner
JP2000192808A (en) * 1998-12-25 2000-07-11 Honda Motor Co Ltd Exhaust muffler for vehicle
US6524080B2 (en) * 2000-04-11 2003-02-25 R. K. Dewan & Co. Hermetically sealed compressors
JP2001295764A (en) * 2000-04-14 2001-10-26 Daikin Ind Ltd Compressor for refrigerator
KR20020045741A (en) * 2000-12-11 2002-06-20 윤종용 Compressor with discharge muffler
JP2004218934A (en) 2003-01-15 2004-08-05 Mitsubishi Electric Corp Expansion muffler, refrigerating cycle circuit using the muffler, and a method of manufacturing the muffler
JP2005098663A (en) * 2003-09-02 2005-04-14 Sanyo Electric Co Ltd Transient critical refrigerant cycle device
JP4290544B2 (en) * 2003-12-19 2009-07-08 東芝キヤリア株式会社 Air conditioner
KR20060081922A (en) * 2005-01-11 2006-07-14 삼성전자주식회사 Refrigerator

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US20100242522A1 (en) 2010-09-30
TR201907699T4 (en) 2019-06-21
KR20090047505A (en) 2009-05-12
ES2728955T3 (en) 2019-10-29
AU2007289779B2 (en) 2010-11-11
WO2008026569A1 (en) 2008-03-06
EP2058610A1 (en) 2009-05-13
CN101501419A (en) 2009-08-05
AU2007289779A1 (en) 2008-03-06
JP4983158B2 (en) 2012-07-25
EP2058610B1 (en) 2019-03-06
JP2008057829A (en) 2008-03-13

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