US20200102945A1 - Refrigerant compressor - Google Patents

Refrigerant compressor Download PDF

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Publication number
US20200102945A1
US20200102945A1 US16/584,424 US201916584424A US2020102945A1 US 20200102945 A1 US20200102945 A1 US 20200102945A1 US 201916584424 A US201916584424 A US 201916584424A US 2020102945 A1 US2020102945 A1 US 2020102945A1
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US
United States
Prior art keywords
sound
unit
refrigerant
damping
damping unit
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.)
Abandoned
Application number
US16/584,424
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English (en)
Inventor
Alfred Freiberger
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.)
Secop Austria GmbH
Original Assignee
Nidec Global Appliance Austria GmbH
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 Nidec Global Appliance Austria GmbH filed Critical Nidec Global Appliance Austria GmbH
Assigned to NIDEC GLOBAL APPLIANCE AUSTRIA GMBH reassignment NIDEC GLOBAL APPLIANCE AUSTRIA GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREIBERGER, ALFRED
Publication of US20200102945A1 publication Critical patent/US20200102945A1/en
Assigned to SECOP AUSTRIA GMBH reassignment SECOP AUSTRIA GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: NIDEC GLOBAL APPLIANCE AUSTRIA GMBH
Abandoned legal-status Critical Current

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Classifications

    • 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
    • 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
    • F04B39/0083—Pulsation and noise damping means using blow off silencers
    • 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
    • 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
    • F04B39/0033—Pulsation and noise damping means with encapsulations
    • 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
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • 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
    • F04B39/0005—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 adaptations of pistons
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0406—Chromium

Definitions

  • the present invention relates to a refrigerant compressor comprising an electrical drive unit, a piston/cylinder unit which can be driven by the drive unit for the cyclical compression of refrigerant, and at least one sound-damping unit made of a thermoplastic, through which sound-damping unit refrigerant can flow and which sound-damping unit comprises at least one damping chamber, wherein the at least one sound-damping unit is connected to the piston/cylinder unit in order to enable an exchange of refrigerant between the sound-damping unit and piston/cylinder unit.
  • Hermetically encapsulated refrigerant compressors have been known for quite some time and are primarily used in refrigerators or refrigerated display cases.
  • the refrigerant process as such has also been known for a long time.
  • Refrigerant is thereby heated in an evaporator by an absorption of energy from the space being cooled and is ultimately overheated and pumped to a higher pressure level by the refrigerant compressor with a piston/cylinder unit, at which pressure level it emits heat via a condenser and is transported back into the evaporator again via a throttle valve in which a pressure reduction and the cooling of the refrigerant take place.
  • An intake of the (gaseous) refrigerant occurs via a suction tube coming directly from the evaporator during an intake cycle of the piston/cylinder unit.
  • the suction tube normally leads to the hermetically encapsulated compressor housing—usually in the vicinity of an inlet of a suction muffler, from which location the refrigerant flows into and through the suction muffler to an intake valve of the piston/cylinder unit. That is, as viewed in the direction of flow, the suction muffler is located upstream of the piston/cylinder unit and primarily serves to keep the noise level of the refrigerant compressor as low as possible during the intake process.
  • a discharge muffler is usually located downstream of the piston/cylinder unit as viewed in the direction of flow, which discharge muffler serves to keep the noise level of the refrigerant compressor as low as possible during the outflow of the compressed refrigerant.
  • Possibilities for improving the efficiency of the refrigerant compressor can in particular be found in the reduction of the temperature of the refrigerant at the start of the compression process.
  • Each reduction of the intake temperature of the refrigerant into the cylinder of the piston/cylinder unit causes a decrease in the technical work necessary for the compression process.
  • a heating of the interior of the compressor housing due to the compressed refrigerant in the discharge muffler is also undesirable in regard to motor cooling.
  • a refrigerant compressor comprising an electrical drive unit, a piston/cylinder unit which can be driven by the drive unit for the cyclical compression of refrigerant, and at least one sound-damping unit made of a thermoplastic, through which sound-damping unit refrigerant can flow and which sound-damping unit comprises at least one damping chamber, wherein the at least one sound-damping unit is connected to the piston/cylinder unit in order to enable an exchange of refrigerant between the sound-damping unit and piston/cylinder unit, the object named at the outset is attained according to the invention in that the at least one sound-damping unit comprises at least in sections a functional surface, wherein the functional surface is embodied such that an emissivity of a section of the sound-damping unit comprising the functional surface is less than 0.7, preferably less than 0.5, particularly preferably less than 0.1.
  • the functional surface present at least in sections reduces the heat emission and/or heat absorption caused by radiation at the at least one sound-damping unit.
  • the at least one sound-damping unit exhibits a reduced emissivity in those regions in which the functional surface is present.
  • the emissivity of the at least one sound-damping unit indicates how much radiation the at least one sound-damping unit emits compared to an ideal radiant heater, a black body. That is, the at least one sound-damping unit exhibits in those regions in which the functional surface is present a reduced heat emission and/or heat absorption caused by radiation compared to surface sections without a functional surface. The temperature inside a compressor housing is thus reduced. This causes the refrigerant compressor according to the invention to exhibit a better efficiency.
  • the functional surface can be embodied either on an outer surface of the at least one sound-damping unit, wherein the outer surface is facing the interior of the compressor housing, or on an inner surface of the at least one sound-damping unit, wherein the inner surface is facing the interior of the at least one sound-damping unit, in particular the at least one damping chamber.
  • the radiant emission and absorption are equal at a given wavelength. That is, in addition to a reduced heat emission, the functional surface also leads to a reduced heat absorption.
  • the at least one sound-damping unit is produced by an injection-molding method.
  • a production method of this type is characterized by the particular cost-efficiency thereof.
  • the functional surface is polished in order to achieve a particularly low emissivity.
  • the at least one sound-damping unit or at least one of the sound-damping units is embodied as a discharge muffler arranged downstream of the piston/cylinder unit in the direction of flow.
  • the functional surface Since the at least one discharge muffler is arranged downstream of the piston/cylinder unit in the direction of flow, preferably inside of the compressor housing, the functional surface must exhibit a low emissivity. This is especially true because the refrigerant enters the at least one discharge muffler after the piston/cylinder unit with a high temperature due to the compression and heats the discharge muffler accordingly.
  • the functional surface is in this case preferably embodied on the inner surface facing the interior of the discharge muffler and results in an improved efficiency of the refrigerant compressor according to the invention, since temperature increases in the interior of the compressor housing are reduced because the heat radiation by the refrigerant is essentially reflected back into the interior of the discharge muffler by the functional surface.
  • the functional surface can of course also be embodied on the outer surface of the discharge muffler facing the interior of the compressor housing, and can thereby result in an improved efficiency of the refrigerant compressor according to the invention.
  • thermoplastic comprises additives, for example, aluminum and/or chromium.
  • the functional surface is at least partially embodied by a surface section of a solid material of the at least one sound-damping unit, and no additional coating is necessary (although such a coating is also not excluded). It would also be possible that the additives are only present in regions of the solid material of the sound-damping unit that are close to the surface.
  • thermoplastic comprises additives, such as aluminum and/or chromium, for example, wherein the heat emission of a sound-damping unit made of thermoplastic with additives is reduced compared to a sound-damping unit made of thermoplastic without additives.
  • the heat emission and heat absorption can also be reduced if the surface of the solid material of the at least one sound-damping unit composed of thermoplastic is polished.
  • the functional surface is only formed by the polishing. That is, the functional surface is in this case formed even if the thermoplastic does not comprise any additives.
  • the functional surface is embodied as a metallic layer.
  • a metallic layer as a functional surface is characterized by a low emission coefficient, especially if the metallic layer is polished.
  • the functional surface is embodied as a non-metallic layer, preferably as a ceramic layer with a low emission coefficient.
  • the at least one sound-damping unit is completely covered by the metallic layer. In this manner, the temperature inside of the compressor housing is significantly reduced, since the heat absorption and heat dissipation of the at least one sound-damping unit are reduced.
  • a covering of the at least one sound-damping unit with the metallic layer is particularly easy and cost-effective to produce.
  • the metallic layer can also be arranged on the inner surface facing the interior of the at least one sound-damping unit.
  • the metallic layer contains chromium and/or aluminum. Both chromium and aluminum exhibit, particularly with a polished surface, low emissivities and absorptivities, for which reason they are exceptionally well-suited to be constituents of the metallic layer.
  • the layer containing chromium and/or aluminum exhibits an emissivity between 0.1 and 0.02 in a polished state.
  • the metallic layer comprises further constituents in addition to chromium and/or aluminum.
  • the metallic layer is embodied as a metallic film.
  • the metallic layer in the form of a metallic film is characterized by a particularly good reduction in heat emission and heat absorption and is easy to apply.
  • the at least one sound-damping unit can be obtained by back injection-molding the metallic film; that is, the metallic film is back injection-molded with the thermoplastic.
  • the film is first supplied to an injection mold. Then, the thermoplastic is injected into the injection mold, wherein the thermoplastic and the film are bonded. It is advantageous that the back injection-molding can be fully automated, and that no adhesive at all is required for the bonding between the thermoplastic and the film.
  • the metallic layer is spread onto and/or painted onto and/or glued onto and/or galvanized onto the at least one sound-damping unit.
  • the metallic layer is applied on the at least one sound-damping unit in a simple manner.
  • Galvanizing in particular can be easily automated, and the coating produced by galvanizing is characterized by low costs as well as rapid producibility.
  • the at least one sound-damping unit or one of the sound-damping units is embodied as a suction muffler arranged upstream of the piston/cylinder unit in the direction of flow.
  • the functional surface Since the at least one suction muffler is arranged inside of the compressor housing upstream of the cylinder/piston unit in the direction of flow, the functional surface must exhibit a low absorptivity. This is true because, otherwise, the refrigerant inside of the suction muffler will be heated as a result of the high temperatures that are present inside of the compressor housing—among other things due to the compressed refrigerant discharged in the pressure tube.
  • the functional surface is thus preferably embodied on the outer surface of the suction muffler facing the interior of the compressor housing and results in an improved efficiency of the refrigerant compressor according to the invention, since the temperature of the refrigerant inside of the suction muffler is not increased by a higher temperature inside of the compressor housing because the heat radiation is essentially reflected back into the compressor housing by the functional surface.
  • the functional surface can of course also be embodied on the inner surface facing the interior of the suction muffler, and can thereby result in an improved efficiency of the refrigerant compressor according to the invention.
  • FIG. 1 shows a sectional view of a known refrigerant compressor
  • FIG. 2 shows a front view of a suction muffler provided with a functional surface
  • FIG. 3 shows a sectional view of the suction muffler from FIG. 2 according to the sectional line A-A drawn in FIG. 2 ;
  • FIG. 4 shows a front view of a discharge muffler provided with a functional surface
  • FIG. 5 shows a sectional view of the discharge muffler from FIG. 4 according to the sectional line B-B drawn in FIG. 4 .
  • FIG. 1 shows a sectional view of a known refrigerant compressor 1 .
  • the refrigerant compressor 1 comprises a compressor housing 8 , a drive unit 2 , a piston/cylinder unit 3 in which the cyclical compression of a refrigerant takes place, and at least one sound-damping unit 4 .
  • the at least one sound-damping unit 4 can be a suction muffler 6 and/or a discharge muffler 7 .
  • the suction muffler 6 is arranged upstream of the piston/cylinder unit 3 in the direction of flow of the refrigerant, whereas the discharge muffler 7 is located downstream of the piston/cylinder unit 3 in the direction of flow of the refrigerant.
  • both the suction muffler 6 illustrated in FIG. 2 and FIG. 3 and also the discharge muffler 7 illustrated in FIG. 4 and FIG. 5 are provided with a functional surface 11 that is preferably embodied as a metallic layer 5 .
  • FIG. 2 shows a front view of the suction muffler 6 comprising the functional surface 11
  • FIG. 3 shows a sectional view of the suction muffler 6 from FIG. 2 according to the sectional line A-A drawn in FIG. 2
  • the suction muffler 6 comprises at least one damping chamber 9 , but preferably multiple damping chambers 9 .
  • FIG. 3 it can be seen that the suction muffler 6 is completely covered with the metallic layer 5 .
  • the metallic layer 5 preferably contains aluminum and, particularly preferably, is embodied as a film that is applied to the suction muffler 6 .
  • the metallic layer 5 on the suction muffler 6 is polished in the exemplary embodiment illustrated, for which reason it has a particularly well-reflecting surface.
  • the metallic layer 5 thus has a lower absorptivity, which is why the refrigerant inside of the suction muffler 6 is hardly heated, or not heated at all, as a result of the higher temperatures that can prevail in the interior of the compressor housing 8 .
  • FIG. 4 shows a front view of the discharge muffler 7 comprising the functional surface 11
  • FIG. 5 shows a sectional view of the discharge muffler 7 from FIG. 4 according to the sectional line 13 - 13 drawn in FIG. 4
  • the discharge muffler 7 comprises at least one damping chamber 10 , but preferably multiple damping chambers 10 .
  • FIG. 5 it can be seen that the discharge muffler 7 is completely covered with the metallic layer 5 .
  • the metallic layer 5 preferably contains aluminum and, particularly preferably, is embodied as a film that is applied to the discharge muffler 7 .
  • the metallic layer 5 on the discharge muffler 7 is polished in the exemplary embodiment illustrated, for which reason it has a particularly well-reflecting surface.
  • the metallic layer 5 thus has a lower emissivity, which is why the high temperature of the compressed refrigerant is hardly transferred, or not transferred at all, to the interior of the compressor housing 8 . That is, the metallic layer 5 on the at least one discharge muffler 7 reduces or prevents a heat emission.
  • additional parts of the refrigerant compressor 1 according to the invention can also be provided with a functional surface 11 , in particular with a metallic layer 5 .
  • thermosenor 1 Via the refrigerant compressor 1 according to the invention, temperature increases in the interior of the compressor housing 8 are thus reduced, whereby in particular the refrigerant temperature at the start of the compression process, and therefore necessarily also during the intake into the cylinder of the piston/cylinder unit 3 , is kept as low as possible. This causes the refrigerant compressor 1 according to the invention to exhibit a better efficiency compared to a known refrigerant compressor 1 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US16/584,424 2018-10-01 2019-09-26 Refrigerant compressor Abandoned US20200102945A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18198034.3A EP3633192A1 (fr) 2018-10-01 2018-10-01 Compresseur frigorifique
EP18198034.3 2018-10-01

Publications (1)

Publication Number Publication Date
US20200102945A1 true US20200102945A1 (en) 2020-04-02

Family

ID=63720614

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/584,424 Abandoned US20200102945A1 (en) 2018-10-01 2019-09-26 Refrigerant compressor

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US (1) US20200102945A1 (fr)
EP (1) EP3633192A1 (fr)
CN (1) CN110966158A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112392690A (zh) * 2020-10-26 2021-02-23 杭州钱江制冷压缩机集团有限公司 一种压缩机消音器及压缩机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401418B1 (en) * 1981-04-29 1998-01-06 White Consolidated Ind Inc Muffler system for refrigeration compressor
US20040234386A1 (en) * 2003-05-19 2004-11-25 Chumley Eugene Karl Discharge muffler having an internal pressure relief valve
EP2631577B1 (fr) * 2012-02-27 2017-06-28 Liebherr-Hausgeräte Ochsenhausen GmbH Appareil de réfrigération et/ou de congélation
KR101854933B1 (ko) * 2013-04-24 2018-05-04 엘지전자 주식회사 압축기용 머플러 및 이를 구비한 압축기

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112392690A (zh) * 2020-10-26 2021-02-23 杭州钱江制冷压缩机集团有限公司 一种压缩机消音器及压缩机

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EP3633192A1 (fr) 2020-04-08
CN110966158A (zh) 2020-04-07

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Effective date: 20191216

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