EP2929188A1 - A hermetic compressor with suction muffler - Google Patents

A hermetic compressor with suction muffler

Info

Publication number
EP2929188A1
EP2929188A1 EP13820738.6A EP13820738A EP2929188A1 EP 2929188 A1 EP2929188 A1 EP 2929188A1 EP 13820738 A EP13820738 A EP 13820738A EP 2929188 A1 EP2929188 A1 EP 2929188A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
muffler
compressor
head
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13820738.6A
Other languages
German (de)
French (fr)
Other versions
EP2929188B1 (en
Inventor
Caglar SAHIN
Kemal Sarioglu
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP2929188A1 publication Critical patent/EP2929188A1/en
Application granted granted Critical
Publication of EP2929188B1 publication Critical patent/EP2929188B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • 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

Definitions

  • the present invention relates to a hermetic compressor used in refrigerators, comprising a suction muffler that decreases the refrigerant temperature and attenuates the noise originating from the refrigerant.
  • oil is placed into the compressor casing in order to decrease the abrasion of the movable mechanical components like the cylinder, piston, crankshaft, piston rod and the bearings wherein these components operate.
  • the high temperature refrigerant compressed in the cylinder volume, particularly heats the cylinder block and the cylinder head along the exhaust line.
  • the oil not only provides decrease in the mechanical losses but also the cooling of these components which cause excessive heating in the compressor.
  • oil, together with the refrigerant is transferred into the refrigeration cycle as a result of the refrigerant in the compressor mixing with the oil. Transfer of oil into the refrigeration cycle causes the amount of oil inside the compressor to decrease, furthermore decreases heat transfer by adhering to the surfaces of the heat exchangers situated in the refrigeration cycle and adversely affects the refrigeration performance.
  • the aim of the present invention is the realization of a compressor wherein the problem of oil transfer from the suction muffler to the refrigeration cycle is decreased.
  • the hermetic compressor used in cooling devices for example in refrigerators, realized in order to attain the aim of the present invention and explicated in the first claim and the respective claims thereof, comprises a suction muffler that provides decrease in the temperature of the refrigerant circulating in the refrigeration cycle and the attenuation of the noise originating from the refrigerant.
  • a lid is disposed on the body of the suction muffler and a muffler head that extends from the lid to the compressor cylinder head.
  • the bend portion at the furthermost end of the muffler head is disposed into the suction chamber of the muffler head, which is better known as the suction plenum.
  • an oil separator plate inside the muffler head that extends vertically from the refrigerant inlet orifice at its lower side towards the bend portion at its end and also an oil flow channel that remains between the oil separator plate and the side wall of the muffler head.
  • the oil separator plate and the oil flow channel provide the refrigerant circulating inside the suction muffler to be separated from the oil at the last portion wherefrom it leaves the suction muffler.
  • the refrigerant almost completely separated from the oil contained therein, is delivered to the cylinder and to the refrigeration cycle from the cylinder.
  • the oil separation plate is fixed to the muffler head by the known techniques like friction welding or adherence methods, or by being produced as a single piece in the plastic injection mold.
  • the compressor comprises a barrier disposed inside the suction muffler and extending between the refrigerant flow path and the oil flow channel by bending from the lower end of the separator plate towards under the muffler lid.
  • the barrier prevents entry of the refrigerant into the oil flow channel and provides the oil separated from the refrigerant to be delivered into the muffler body at a point farther from the refrigerant flow.
  • the protrusion provides increase in the surface area whereto the refrigerant impacts on the inner surface of the bend and increase in the amount of oil separated from the refrigerant.
  • the oil contained in the refrigerant circulating in the refrigeration cycle is effectively separated from the refrigerant and mixing of oil into the refrigeration cycle is prevented.
  • the efficiency of the compressor is increased and the level of oil inside the compressor casing used for lubrication is prevented from decreasing.
  • Heat transfer is improved by preventing oil from being transferred with the refrigerant to the heat exchangers like the condenser, evaporator situated in the refrigeration cycle.
  • Figure 1 – is the cross-sectional view of a hermetic compressor.
  • Figure 2 – is the perspective view of a suction muffler and a cylinder head.
  • Figure 3 – is the front view of a suction muffler.
  • Figure 4 – is the view of cross-section A – A in Figure 3.
  • Figure 5 – is the cross-sectional view of a muffler head.
  • Figure 6 — is the cross-sectional view of a muffler head in an embodiment of the present invention.
  • the circulation of the refrigerant used in the refrigeration cycle is provided by a reciprocating and hermetic compressor (1).
  • the compressor (1) comprises a casing (2), a cylinder (3) disposed inside the casing (2), that provides the suction and discharge of the refrigerant, a piston (4) operating inside the cylinder (3), a cylinder head (5) that provides the refrigerant sucked into and discharged from the cylinder (3) by the movement of the piston (4) to be directed, a suction chamber (6) and a discharge chamber (7) disposed inside the cylinder head (5), a suction muffler (8) produced from plastic material, providing decrease in the temperature of the refrigerant and attenuation of the noise originating from the refrigerant, one or more than one flow pipe (9) disposed inside the lower body of the suction muffler (8) and through which the refrigerant passes, a discharge hole (10) disposed at the lower side of the suction muffler (8) body and providing the transfer of the oil accumulated therein to the casing (2), a lid (11) mounted on the suction muffler (8), a muffler head (1
  • the compressor (1) of the present invention comprises a separator plate (16) disposed inside the muffler head (14) and extending vertically from the inlet opening (15) towards the bend (12), and an oil flow channel (17) that remains between the separator plate (16) and the side wall of the muffler head (14) and that provides the oil separated from the refrigerant at the bend (12) to be directed to the inlet opening (15) without mixing with the refrigerant moving upwards inside the muffler head (14) ( Figure 4, Figure 5, Figure 6).
  • the separator plate (16) is disposed into the muffler head (14), which is the portion from where the refrigerant, passing through the body of the suction muffler (8) and being sucked into the cylinder (3) by the piston (4), leaves the suction muffler (8) before passing into the stroke volume of the cylinder (3).
  • the separator plate (16) provides the oil, separated from the refrigerant in the bend (12) portion of the muffler head (14) that is seated into the suction chamber (6), to be directed from the oil flow channel (17) to the refrigerant inlet opening (15) without mixing with the refrigerant.
  • the oil that flows from the inlet opening (15) into the body of the suction muffler (8) is transferred to the casing (2) by means of the discharge hole (10).
  • the separator plate (16) and the oil flow channel (17) prevent the oil, carried by the refrigerant, from mixing with the refrigerant again after being separated from the refrigerant in the bend (12).
  • the refrigerant, being almost entirely separated from the oil contained therein, is delivered to the outlet opening (13) and from there to the refrigeration cycle via the cylinder (3) and the discharge chamber (7).
  • the compressor (1) comprises a curved inner surface (18) situated at the inner portion of the bend (12) of the muffler head (14) and extending from the upper side of the oil flow channel (17) towards the outlet opening (13), whereto the refrigerant impacts and the oil particles in the refrigerant hold on by separating from the refrigerant ( Figure 4, Figure 5, Figure 6).
  • the refrigerant that moves upwards inside the muffler head (14) impacts the curved inner surface (18) before reaching the outlet opening (13) and the oil particles contained therein are separated from the refrigerant by holding on to the inner surface (18).
  • the compressor (1) comprises a barrier (19) that is disposed inside the suction muffler (8), that extends between the upper outlet orifice (B) of the refrigerant flow pipe (9) and the oil flow channel (17) by bending from the lower end of the separator plate (16) to under the lid (11) and that prevents the refrigerant moving upwards in the refrigerant flow pipe (9) from entering the oil flow channel (17) and mixing with the oil flowing downwards from the oil flow channel (17) ( Figure 4, Figure 5, Figure 6).
  • the barrier (19) provides the oil flowing downwards from the oil flow channel (17) to be transferred into the suction muffler (8) body by being moved away from the refrigerant flow pipe (9) and prevents the oil separated from the refrigerant from being mixed with the refrigerant again.
  • the compressor (1) comprises a protrusion (20) situated near the outlet opening (13) at the inner surface (18) of the muffler head (14) bend (12), that extends towards the flow path of the refrigerant which flows inside the bend (12) and that provides increase in the amount of oil separated from by impacting of the refrigerant which moves inside the muffler head (14) ( Figure 6).
  • the separator plate (16) is fixed to the side walls of the muffler head (14) with the method of friction welding.
  • the separator plate (16) is fixed to the side walls of the muffler head (14) by adhesion.
  • the separator plate (16) is produced as a single piece with the muffler head (14) by injection molding method.
  • the oil carried in the refrigerant passing through the suction muffler (8) is effectively separated and transfer of oil to the refrigeration cycle, wherein the compressor (1) is used, is prevented.
  • the abrasion and overheating of the movable mechanical components inside the casing (2) are prevented under long term operating conditions by preserving the oil level in the compressor (1).
  • the refrigeration performance is improved by preventing transfer of oil by the refrigerant to the heat exchangers like the condenser, evaporator situated in the refrigeration cycle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The present invention relates to a compressor (1) comprising a suction muffler (8) that provides decrease in the temperature of the refrigerant used in the refrigeration cycle in refrigerators and attenuation of the noise originating from the refrigerant and produced from plastic material, and wherein the amount of oil transferred to the refrigeration cycle is decreased by separating the oil mixed in the refrigerant that passes through the suction muffler (8).

Description

    A HERMETIC COMPRESSOR WITH SUCTION MUFFLER
  • The present invention relates to a hermetic compressor used in refrigerators, comprising a suction muffler that decreases the refrigerant temperature and attenuates the noise originating from the refrigerant.
  • In the reciprocating hermetic compressors used in refrigerators, oil is placed into the compressor casing in order to decrease the abrasion of the movable mechanical components like the cylinder, piston, crankshaft, piston rod and the bearings wherein these components operate. During operation of the compressor, the high temperature refrigerant, compressed in the cylinder volume, particularly heats the cylinder block and the cylinder head along the exhaust line. The oil, not only provides decrease in the mechanical losses but also the cooling of these components which cause excessive heating in the compressor. However, oil, together with the refrigerant, is transferred into the refrigeration cycle as a result of the refrigerant in the compressor mixing with the oil. Transfer of oil into the refrigeration cycle causes the amount of oil inside the compressor to decrease, furthermore decreases heat transfer by adhering to the surfaces of the heat exchangers situated in the refrigeration cycle and adversely affects the refrigeration performance.
  • In the International Patent Application No. WO2011147005, a compressor used in cooling devices is explained wherein the oil particles are separated from refrigerant-oil mixture entering into the cylinder volume.
  • In the United States Patent Application No. US5988990, a hermetic compressor is explained wherein the lubricant oil is separated from the refrigerant circulating in the refrigerant cycle at the inlet of the suction muffler by means of an oil separating apparatus.
  • In the European Patent Application No. EP2397693, a hermetic compressor is explained wherein the oil is separated from the refrigerant inside the suction muffler.
  • In the United States Patent Application No. US2006045762, a hermetic compressor is explained wherein the liquid components and oil components are separated from the refrigerant inside the suction muffler.
  • The aim of the present invention is the realization of a compressor wherein the problem of oil transfer from the suction muffler to the refrigeration cycle is decreased.
  • The hermetic compressor used in cooling devices, for example in refrigerators, realized in order to attain the aim of the present invention and explicated in the first claim and the respective claims thereof, comprises a suction muffler that provides decrease in the temperature of the refrigerant circulating in the refrigeration cycle and the attenuation of the noise originating from the refrigerant.
  • A lid is disposed on the body of the suction muffler and a muffler head that extends from the lid to the compressor cylinder head. The bend portion at the furthermost end of the muffler head is disposed into the suction chamber of the muffler head, which is better known as the suction plenum.
  • In the compressor of the present invention, there is an oil separator plate inside the muffler head that extends vertically from the refrigerant inlet orifice at its lower side towards the bend portion at its end and also an oil flow channel that remains between the oil separator plate and the side wall of the muffler head.
  • The oil separator plate and the oil flow channel provide the refrigerant circulating inside the suction muffler to be separated from the oil at the last portion wherefrom it leaves the suction muffler. The refrigerant, almost completely separated from the oil contained therein, is delivered to the cylinder and to the refrigeration cycle from the cylinder.
  • The oil separation plate is fixed to the muffler head by the known techniques like friction welding or adherence methods, or by being produced as a single piece in the plastic injection mold.
  • In an embodiment of the present invention, there is a curved inner surface inside the muffler head which enables the refrigerant to impact thereto and be separated from the oil particles contained therein and to flow into the muffler body by flowing through the oil flow channel.
  • In another embodiment of the present invention, the compressor comprises a barrier disposed inside the suction muffler and extending between the refrigerant flow path and the oil flow channel by bending from the lower end of the separator plate towards under the muffler lid. The barrier prevents entry of the refrigerant into the oil flow channel and provides the oil separated from the refrigerant to be delivered into the muffler body at a point farther from the refrigerant flow.
  • In another embodiment of the present invention, there is a protrusion at the inner surface of the bend of the muffler head near the outlet opening wherefrom the refrigerant is delivered to the cylinder and which extends towards the refrigerant flow path. The protrusion provides increase in the surface area whereto the refrigerant impacts on the inner surface of the bend and increase in the amount of oil separated from the refrigerant.
  • In the compressor suction muffler of the present invention, the oil contained in the refrigerant circulating in the refrigeration cycle is effectively separated from the refrigerant and mixing of oil into the refrigeration cycle is prevented. The efficiency of the compressor is increased and the level of oil inside the compressor casing used for lubrication is prevented from decreasing. Heat transfer is improved by preventing oil from being transferred with the refrigerant to the heat exchangers like the condenser, evaporator situated in the refrigeration cycle.
  • The compressor realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
  • Figure 1 – is the cross-sectional view of a hermetic compressor.
  • Figure 2 – is the perspective view of a suction muffler and a cylinder head.
  • Figure 3 – is the front view of a suction muffler.
  • Figure 4 – is the view of cross-section A – A in Figure 3.
  • Figure 5 – is the cross-sectional view of a muffler head.
  • Figure 6 – is the cross-sectional view of a muffler head in an embodiment of the present invention.
  • The elements illustrated in the figures are numbered as follows:
    1. Compressor
    2. Casing
    3. Cylinder
    4. Piston
    5. Cylinder head
    6. Suction chamber
    7. Discharge chamber
    8. Suction muffler
    9. Refrigerant flow pipe
    10. Discharge hole
    11. Lid
    12. Bend
    13. Outlet opening
    14. Muffler head
    15. Inlet opening
    16. Separator plate
    17. Oil flow channel
    18. Inner surface
    19. Barrier
    20. Protrusion
  • In cooling devices, for example in refrigerators, the circulation of the refrigerant used in the refrigeration cycle is provided by a reciprocating and hermetic compressor (1).
  • The compressor (1) comprises a casing (2), a cylinder (3) disposed inside the casing (2), that provides the suction and discharge of the refrigerant, a piston (4) operating inside the cylinder (3), a cylinder head (5) that provides the refrigerant sucked into and discharged from the cylinder (3) by the movement of the piston (4) to be directed, a suction chamber (6) and a discharge chamber (7) disposed inside the cylinder head (5), a suction muffler (8) produced from plastic material, providing decrease in the temperature of the refrigerant and attenuation of the noise originating from the refrigerant, one or more than one flow pipe (9) disposed inside the lower body of the suction muffler (8) and through which the refrigerant passes, a discharge hole (10) disposed at the lower side of the suction muffler (8) body and providing the transfer of the oil accumulated therein to the casing (2), a lid (11) mounted on the suction muffler (8), a muffler head (14) extending from the lid (11) into the cylinder head (5) and having a bend (12) disposed inside the suction chamber (6) and an outlet opening (13) providing the refrigerant to pass into the cylinder (3), and an inlet opening (15) that provides the refrigerant coming from the flow pipe (9) inside the suction muffler (8) to enter into the muffler head (14).
  • The compressor (1) of the present invention comprises a separator plate (16) disposed inside the muffler head (14) and extending vertically from the inlet opening (15) towards the bend (12), and an oil flow channel (17) that remains between the separator plate (16) and the side wall of the muffler head (14) and that provides the oil separated from the refrigerant at the bend (12) to be directed to the inlet opening (15) without mixing with the refrigerant moving upwards inside the muffler head (14) (Figure 4, Figure 5, Figure 6).
  • In the compressor (1) of the present invention, the separator plate (16) is disposed into the muffler head (14), which is the portion from where the refrigerant, passing through the body of the suction muffler (8) and being sucked into the cylinder (3) by the piston (4), leaves the suction muffler (8) before passing into the stroke volume of the cylinder (3). The separator plate (16) provides the oil, separated from the refrigerant in the bend (12) portion of the muffler head (14) that is seated into the suction chamber (6), to be directed from the oil flow channel (17) to the refrigerant inlet opening (15) without mixing with the refrigerant. The oil that flows from the inlet opening (15) into the body of the suction muffler (8) is transferred to the casing (2) by means of the discharge hole (10). The separator plate (16) and the oil flow channel (17) prevent the oil, carried by the refrigerant, from mixing with the refrigerant again after being separated from the refrigerant in the bend (12). The refrigerant, being almost entirely separated from the oil contained therein, is delivered to the outlet opening (13) and from there to the refrigeration cycle via the cylinder (3) and the discharge chamber (7).
  • In an embodiment of the present invention, the compressor (1) comprises a curved inner surface (18) situated at the inner portion of the bend (12) of the muffler head (14) and extending from the upper side of the oil flow channel (17) towards the outlet opening (13), whereto the refrigerant impacts and the oil particles in the refrigerant hold on by separating from the refrigerant (Figure 4, Figure 5, Figure 6). The refrigerant that moves upwards inside the muffler head (14) impacts the curved inner surface (18) before reaching the outlet opening (13) and the oil particles contained therein are separated from the refrigerant by holding on to the inner surface (18). The oil particles, coming from the inner surface (18),enter into the oil flow channel (17), that is between the separator plate (16) and the side wall of the muffler head (14), and reach the inlet opening (15) by flowing downwards with the effect of gravity. The oil that flows from the inlet opening (15) into the body (9) is transferred to the casing (2) through the discharge hole (10).
  • In another embodiment of the present invention, the compressor (1) comprises a barrier (19) that is disposed inside the suction muffler (8), that extends between the upper outlet orifice (B) of the refrigerant flow pipe (9) and the oil flow channel (17) by bending from the lower end of the separator plate (16) to under the lid (11) and that prevents the refrigerant moving upwards in the refrigerant flow pipe (9) from entering the oil flow channel (17) and mixing with the oil flowing downwards from the oil flow channel (17) (Figure 4, Figure 5, Figure 6). At the same time, the barrier (19) provides the oil flowing downwards from the oil flow channel (17) to be transferred into the suction muffler (8) body by being moved away from the refrigerant flow pipe (9) and prevents the oil separated from the refrigerant from being mixed with the refrigerant again.
  • In an embodiment of the present invention, the compressor (1) comprises a protrusion (20) situated near the outlet opening (13) at the inner surface (18) of the muffler head (14) bend (12), that extends towards the flow path of the refrigerant which flows inside the bend (12) and that provides increase in the amount of oil separated from by impacting of the refrigerant which moves inside the muffler head (14) (Figure 6).
  • In another embodiment of the present invention, the separator plate (16) is fixed to the side walls of the muffler head (14) with the method of friction welding.
  • In another embodiment of the present invention, the separator plate (16) is fixed to the side walls of the muffler head (14) by adhesion.
  • In another embodiment of the present invention, the separator plate (16) is produced as a single piece with the muffler head (14) by injection molding method.
  • In the compressor (1) of the present invention, the oil carried in the refrigerant passing through the suction muffler (8) is effectively separated and transfer of oil to the refrigeration cycle, wherein the compressor (1) is used, is prevented. The abrasion and overheating of the movable mechanical components inside the casing (2) are prevented under long term operating conditions by preserving the oil level in the compressor (1). The refrigeration performance is improved by preventing transfer of oil by the refrigerant to the heat exchangers like the condenser, evaporator situated in the refrigeration cycle.

Claims (7)

  1. A compressor (1) comprising a casing (2), a cylinder (3) disposed inside the casing (2), that provides the suction and discharge of the refrigerant, a piston (4), a cylinder head (5) that provides the sucked and discharged refrigerant to be directed, a suction chamber (6) and a discharge chamber (7) disposed inside the cylinder head (5), a suction muffler (8) providing decrease in the temperature of the refrigerant and attenuation of the noise originating from the refrigerant, one or more than one flow pipe (9) disposed inside the body of the suction muffler (8) and through which the refrigerant passes, an oil discharge hole (10) disposed at the lower side of the suction muffler (8) body, a lid (11) mounted on the suction muffler (8), a muffler head (14) extending from the lid (11) into the cylinder head (5) and having a bend (12) disposed inside the suction chamber (6) and an outlet opening (13) providing the refrigerant to pass into the cylinder (3), and an inlet opening (15) that provides the refrigerant coming from the flow pipe (9) to enter into the muffler head (14), characterized in that a separator plate (16) disposed inside the muffler head (14) and extending vertically from the inlet opening (15) towards the bend (12) and in that an oil flow channel (17) that remains between the separator plate (16) and the side wall of the muffler head (14) and providing the oil separated from the refrigerant at the bend (12) to be directed to the inlet opening (15).
  2. A compressor (1) as in Claim 1, characterized in that a curved inner surface (18) situated at the inner portion of the bend (12) of the muffler head (14) and extending from the upper side of the oil flow channel (17) towards the outlet opening (13).
  3. A compressor (1) as in Claim 1 or 2, characterized in that a barrier (19) disposed inside the suction muffler (8) and extending between the upper outlet orifice (B) of the refrigerant flow pipe (9) and the oil flow channel (17) by bending from the lower end of the separator plate (16) towards under the lid (11).
  4. A compressor (1) as in any one of the above claims, characterized in that a protrusion (20) situated near the outlet opening (13) at the inner surface (18) of the bend (12) and extending towards the flow path of the refrigerant.
  5. A compressor (1) as in any one of the above claims, characterized in that the separator plate (16) that is fixed to the side walls of the muffler head (14) with the method of friction welding.
  6. A compressor (1) as in any one of the Claims 1 to 4, characterized in that the separator plate (16) that is fixed to the side walls of the muffler head (14) by adhesion.
  7. A compressor (1) as in any one of the Claims 1 to 4, characterized in that the separator plate (16) that is produced as a single piece with the muffler head (14) by injection molding method.
EP13820738.6A 2012-12-05 2013-12-04 A hermetic compressor with suction muffler Active EP2929188B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201214186 2012-12-05
PCT/EP2013/075571 WO2014086882A1 (en) 2012-12-05 2013-12-04 A hermetic compressor with suction muffler

Publications (2)

Publication Number Publication Date
EP2929188A1 true EP2929188A1 (en) 2015-10-14
EP2929188B1 EP2929188B1 (en) 2019-04-10

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Country Status (4)

Country Link
EP (1) EP2929188B1 (en)
BR (1) BR112015012766A2 (en)
TR (1) TR201718912T3 (en)
WO (1) WO2014086882A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2017211705A1 (en) * 2016-06-07 2017-12-14 Arcelik Anonim Sirketi A hermetic compressor comprising a partially-elastic suction muffler
WO2020057826A1 (en) * 2018-09-17 2020-03-26 Arcelik Anonim Sirketi A compressor comprising a suction muffler
CN111894832B (en) * 2020-07-17 2021-12-28 珠海格力节能环保制冷技术研究中心有限公司 Air suction silencer, compressor and refrigerator

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TR201718912T3 (en) 2018-01-22
EP2929188B1 (en) 2019-04-10
BR112015012766A2 (en) 2017-07-11
CN104919179A (en) 2015-09-16
WO2014086882A1 (en) 2014-06-12

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