EP4194695B1 - A hermetic compressor with improved vibration tube assembly - Google Patents

A hermetic compressor with improved vibration tube assembly Download PDF

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Publication number
EP4194695B1
EP4194695B1 EP22199121.9A EP22199121A EP4194695B1 EP 4194695 B1 EP4194695 B1 EP 4194695B1 EP 22199121 A EP22199121 A EP 22199121A EP 4194695 B1 EP4194695 B1 EP 4194695B1
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EP
European Patent Office
Prior art keywords
terminal member
compressor
cylinder head
vibration tube
cylinder
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.)
Active
Application number
EP22199121.9A
Other languages
German (de)
French (fr)
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EP4194695A1 (en
Inventor
Sarper Marasli
Gorkem BEZIRGAN
Sehmuz Ali SUBAY
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
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Arcelik AS
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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
    • 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
    • F04B39/12—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
    • 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
    • F04B39/125—Cylinder heads

Definitions

  • the present invention relates to a hermetic compressor wherein the vibration tube and cylinder head assembly is improved and the vibration tube is mounted on the cylinder head so as not to heat the refrigerant gas and to operate more efficiently.
  • Hermetic compressors suitable for use in refrigerators comprise a cylinder which provides suction and compression of the refrigerant, and a piston operating in the cylinder.
  • the cylinder hole is covered by a cylinder head which directs the refrigerant sucked and pumped by the movement of the piston.
  • a valve plate is disposed between the cylinder head and the cylinder body.
  • the refrigerant pumped during the compression movement of the piston is first collected in the exhaust chamber in the cylinder head and then is discharged from there to the refrigeration system.
  • the refrigerant, which is compressed by the piston movement in the compressor is heated in the outlet line (exhaust gas). In order to ensure the continuity of the refrigeration cycle, cold gas is again drawn from the suction line.
  • the exhaust gas is transferred to the vibration tube through a connection hole on the body. Due to the hot exhaust gas, the cold gas drawn from the suction line on the body also heats up, reducing the efficiency of the compressor. In the state of the art embodiments, the gas in the outlet line passes through this connection hole in the body and heats the body, causing some of the heat to be transferred to the inlet line. Therefore, thermal inefficiency is encountered in embodiments where gas is discharged through the vibration tube and the body. The cold fluid at the beginning of the refrigeration cycle and the heated fluids at the end of the cycle affect each other and the efficiency of the compressor decreases.
  • the vibration tube is mounted to the cylinder head with one of the bolts which provide the cylinder head and body connection.
  • the connection between the vibration tube, the cylinder head and the body is not strong enough and gas leaks may occur due to the pressure in the vibration tube.
  • the aim of the present invention is the realization of a hermetic compressor with improved vibration tube assembly and increased operational efficiency.
  • the solution is provided by a compressor as defined by the subject-matter of claim 1.
  • the compressor of the present invention comprises a terminal member which enables the vibration tube, which carries the exhaust gas, to be directly mounted to the cylinder head.
  • the terminal member is fitted into a stepped housing in the cylinder head.
  • the stepped housing is a pass-through housing with a narrowing depth, structured so as to make the assembly more robust.
  • the terminal member comprises a protrusion which is fitted into the stepped housing.
  • the terminal member in the compressor of the present invention has a hollow cylindrical body with a certain wall thickness.
  • the circles at the two ends of the body open into gaps.
  • At one end of the body there is a hole suitable for inserting a bolt.
  • At another end of the terminal member body there is a circular protrusion suitable for being fitted into the stepped housing. Said protrusion pressed on the step in the housing, thus improving the assembly.
  • the terminal member body further comprises an opening on the cylindrical wall.
  • the vibration tube is mounted into said opening.
  • the vibration tube is preferably inserted into the opening and then welded. Thus, the tube is prevented from dislodging from the opening.
  • the cylinder head comprises a channel against which the vibration tube is to bear.
  • Said channel is in the form of a cavity and in a form suitable for at least a part of the tube to be partially inserted.
  • the vibration tube and the terminal member are mounted directly to the cylinder head by means of the bolt placed in the hole.
  • this assembly provided with the terminal member, the heating of the refrigerant taken from the body is prevented during the exhaust gas discharge.
  • a hermetic compressor is realized, which is operated more efficient manner and wherein the cold gas received from the suction side on the body by carrying out the exhaust gas discharge directly from the cylinder head.
  • the compressor (1) which is a hermetic compressor suitable to be used in cooling devices, comprises a casing (2); a cylinder which is arranged in the casing and which enables the refrigerant to be sucked and pumped; a piston which operates in the cylinder; a body (3) which supports the cylinder and the piston; a cylinder head (4) that enables the refrigerant sucked and pumped by means of the movement of the piston to be guided; a valve plate (5) which is disposed between the cylinder and the cylinder head (4); and a vibration tube (6) which provides the discharge of the refrigerant.
  • the compressor (1) of the present invention comprises a terminal member (7) having an opening (10) which is suitable for fitting the vibration tube (6) and a protrusion (8) at the part where the terminal member (7) is placed into the cylinder head (4), and the cylinder head (4) having a stepped housing (9) suitable for fitting the protrusion (8), wherein the terminal member (7) is placed.
  • the compressor (1) of the present invention comprises a terminal member (7) which enables the vibration tube (6) to be directly mounted to the cylinder head (4).
  • a terminal member (7) which enables the vibration tube (6) to be directly mounted to the cylinder head (4).
  • the vibration tube (6) engages with the terminal member (7).
  • a stepped housing (9) is arranged on the cylinder head (4).
  • the terminal member (7) comprises a protrusion (8) which is fitted into the stepped housing (9).
  • the protrusion (8) is configured so as to be suitable for the circular depth in the stepped housing (9).
  • the compressor (1) comprises the vibration tube (6) which is joined with the terminal member (7) by welding after being passed through the opening (10).
  • the vibration tube (6) is firmly mounted to the terminal member (7).
  • the compressor (1) comprises the terminal member (7) having a cylindrical hollow body and a circular protrusion (8) suitable for being fitted into the stepped housing (9).
  • the terminal member (7) is firmly mounted to the cylinder head (4).
  • the compressor (1) comprises a channel (14) which enables the vibration tube (6) to be mounted to the cylinder head (4) more firmly.
  • the channel (14) is in the form of a cavity on the cylinder head (4).
  • the vibration tube (6) is fitted into the cavity-shaped channel (14), thus providing a durable mounting structure.
  • the compressor (1) comprises the terminal member (7) of which the inner diameter is larger than the diameter of the vibration tube (6).
  • the compressor (1) comprises the terminal member (7) having at least one hole (11) thereon, and a bolt (12) which is fitted into the hole (11) so as to enable the terminal member (7) to be fixed to the cylinder head (4).
  • the compressor (1) comprises a gasket (13) which is disposed between the stepped housing (9) and the terminal member (7) so as to provide leak-proofing.
  • a hermetic compressor (1) is realized, wherein the insulation of the refrigerant gas sucked into the body (3) is improved and the operational efficiency thereof is increased.

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

Description

  • The present invention relates to a hermetic compressor wherein the vibration tube and cylinder head assembly is improved and the vibration tube is mounted on the cylinder head so as not to heat the refrigerant gas and to operate more efficiently.
  • Hermetic compressors suitable for use in refrigerators comprise a cylinder which provides suction and compression of the refrigerant, and a piston operating in the cylinder. The cylinder hole is covered by a cylinder head which directs the refrigerant sucked and pumped by the movement of the piston. A valve plate is disposed between the cylinder head and the cylinder body. The refrigerant pumped during the compression movement of the piston is first collected in the exhaust chamber in the cylinder head and then is discharged from there to the refrigeration system. The refrigerant, which is compressed by the piston movement in the compressor, is heated in the outlet line (exhaust gas). In order to ensure the continuity of the refrigeration cycle, cold gas is again drawn from the suction line. In the state of the art compressors, the exhaust gas is transferred to the vibration tube through a connection hole on the body. Due to the hot exhaust gas, the cold gas drawn from the suction line on the body also heats up, reducing the efficiency of the compressor. In the state of the art embodiments, the gas in the outlet line passes through this connection hole in the body and heats the body, causing some of the heat to be transferred to the inlet line. Therefore, thermal inefficiency is encountered in embodiments where gas is discharged through the vibration tube and the body. The cold fluid at the beginning of the refrigeration cycle and the heated fluids at the end of the cycle affect each other and the efficiency of the compressor decreases.
  • In the state of the art United States of America Patent Application No. US20060110269A1 , the vibration tube is mounted to the cylinder head with one of the bolts which provide the cylinder head and body connection. In this embodiment, the connection between the vibration tube, the cylinder head and the body is not strong enough and gas leaks may occur due to the pressure in the vibration tube.
  • In the state of the art United States of America Patent Application No. US2015219086A1 , a gas discharge arrangement for a refrigeration compressor is disclosed.
  • In the state of the art Chinese Patent document No. CN101871446B , an exhaust connector, which is used for connecting a compressor cylinder cover and an exhaust pipe is disclosed.
  • The aim of the present invention is the realization of a hermetic compressor with improved vibration tube assembly and increased operational efficiency.
  • The solution is provided by a compressor as defined by the subject-matter of claim 1. The compressor of the present invention comprises a terminal member which enables the vibration tube, which carries the exhaust gas, to be directly mounted to the cylinder head. The terminal member is fitted into a stepped housing in the cylinder head. The stepped housing is a pass-through housing with a narrowing depth, structured so as to make the assembly more robust. The terminal member comprises a protrusion which is fitted into the stepped housing.
  • The terminal member in the compressor of the present invention has a hollow cylindrical body with a certain wall thickness. The circles at the two ends of the body open into gaps. At one end of the body there is a hole suitable for inserting a bolt. At another end of the terminal member body, there is a circular protrusion suitable for being fitted into the stepped housing. Said protrusion pressed on the step in the housing, thus improving the assembly. The terminal member body further comprises an opening on the cylindrical wall. The vibration tube is mounted into said opening. The vibration tube is preferably inserted into the opening and then welded. Thus, the tube is prevented from dislodging from the opening.
  • In the present invention, the cylinder head comprises a channel against which the vibration tube is to bear. Said channel is in the form of a cavity and in a form suitable for at least a part of the tube to be partially inserted.
  • The vibration tube and the terminal member are mounted directly to the cylinder head by means of the bolt placed in the hole. By means of this assembly provided with the terminal member, the heating of the refrigerant taken from the body is prevented during the exhaust gas discharge.
  • In order to ensure efficient operation in the compressor of the present invention, it is necessary to reduce the heat transfer of the gas flow line with other components as much as possible. By means of the terminal member which connects the vibration tube to the cylinder head, which is comprised by the compressor of the present invention, the connection between the body and the refrigerant flow line is removed, and the gas is directly discharged from the cylinder head, thus achieving efficiency.
  • By means of the present invention, a hermetic compressor is realized, which is operated more efficient manner and wherein the cold gas received from the suction side on the body by carrying out the exhaust gas discharge directly from the cylinder head.
  • The model embodiments related to the compressor realized in order to attain the aim of the present invention are shown in the attached figures, where:
    • Figure 1 - is the perspective view of the compressor in an embodiment of the present invention.
    • Figure 2 - is the view of the body, the cylinder head and the vibration tube in the compressor of the present invention.
    • Figure 3 - is the top view of the cylinder head and the body when the vibration tube is mounted to the cylinder head in the compressor of the present invention.
    • Figure 4 - is the view of the body, the cylinder head and the valve plate in the compressor in an embodiment of the present invention.
    • Figure 5 - is the view of the terminal member where the vibration tube is connected to the cylinder head in the compressor of the present invention.
  • The elements illustrated in the figures are numbered as follows:
    1. 1. Compressor
    2. 2. Casing
    3. 3. Body
    4. 4. Cylinder head
    5. 5. Valve plate
    6. 6. Vibration tube
    7. 7. Terminal member
    8. 8. Protrusion
    9. 9. Stepped housing
    10. 10. Opening
    11. 11. Hole
    12. 12. Bolt
    13. 13. Gasket
    14. 14. Channel
  • The compressor (1), which is a hermetic compressor suitable to be used in cooling devices, comprises a casing (2); a cylinder which is arranged in the casing and which enables the refrigerant to be sucked and pumped; a piston which operates in the cylinder; a body (3) which supports the cylinder and the piston; a cylinder head (4) that enables the refrigerant sucked and pumped by means of the movement of the piston to be guided; a valve plate (5) which is disposed between the cylinder and the cylinder head (4); and a vibration tube (6) which provides the discharge of the refrigerant.
  • The compressor (1) of the present invention comprises a terminal member (7) having an opening (10) which is suitable for fitting the vibration tube (6) and a protrusion (8) at the part where the terminal member (7) is placed into the cylinder head (4), and the cylinder head (4) having a stepped housing (9) suitable for fitting the protrusion (8), wherein the terminal member (7) is placed.
  • The compressor (1) of the present invention comprises a terminal member (7) which enables the vibration tube (6) to be directly mounted to the cylinder head (4). By means of an opening (10) arranged on the terminal member (7), the vibration tube (6) engages with the terminal member (7). A stepped housing (9) is arranged on the cylinder head (4). The terminal member (7) comprises a protrusion (8) which is fitted into the stepped housing (9). The protrusion (8) is configured so as to be suitable for the circular depth in the stepped housing (9). By means of the terminal member (7), the vibration tube (6) is directly mounted to the cylinder head (4), not onto the body (3), and thus the refrigerant gas received from the suction side is prevented from heating up due to the exhaust gas.
  • In an embodiment of the present invention, the compressor (1) comprises the vibration tube (6) which is joined with the terminal member (7) by welding after being passed through the opening (10). Thus, the vibration tube (6) is firmly mounted to the terminal member (7).
  • In an embodiment of the present invention, the compressor (1) comprises the terminal member (7) having a cylindrical hollow body and a circular protrusion (8) suitable for being fitted into the stepped housing (9). Thus, the terminal member (7) is firmly mounted to the cylinder head (4).
  • In the present invention, the compressor (1) comprises a channel (14) which enables the vibration tube (6) to be mounted to the cylinder head (4) more firmly. The channel (14) is in the form of a cavity on the cylinder head (4). The vibration tube (6) is fitted into the cavity-shaped channel (14), thus providing a durable mounting structure.
  • In an embodiment of the present invention, the compressor (1) comprises the terminal member (7) of which the inner diameter is larger than the diameter of the vibration tube (6).
  • In an embodiment of the present invention, the compressor (1) comprises the terminal member (7) having at least one hole (11) thereon, and a bolt (12) which is fitted into the hole (11) so as to enable the terminal member (7) to be fixed to the cylinder head (4).
  • In an embodiment of the present invention, the compressor (1) comprises a gasket (13) which is disposed between the stepped housing (9) and the terminal member (7) so as to provide leak-proofing.
  • By means of the present invention, a hermetic compressor (1) is realized, wherein the insulation of the refrigerant gas sucked into the body (3) is improved and the operational efficiency thereof is increased.

Claims (6)

  1. A compressor (1), which is a hermetic compressor suitable to be used in cooling devices, comprising a casing (2); a cylinder which is arranged in the casing and which enables the refrigerant to be sucked and pumped; a piston which operates in the cylinder; a body (3) which supports the cylinder and the piston; a cylinder head (4) that enables the refrigerant sucked and pumped by means of the movement of the piston to be guided; a valve plate (5) which is disposed between the cylinder and the cylinder head (4); and a vibration tube (6) which provides the discharge of the refrigerant, a terminal member (7) having an opening (10) which is suitable for fitting the vibration tube (6) and a protrusion (8) at the part where the terminal member (7) is placed into the cylinder head (4), and the cylinder head (4) having a stepped housing (9) suitable for fitting the protrusion (8), wherein the terminal member (7) is placed characterized by a channel (14) which enables the vibration tube (6) to be mounted to the cylinder head (4) more firmly.
  2. A compressor (1) as in Claim 1, characterized by the vibration tube (6) which is joined with the terminal member (7) by welding after being passed through the opening (10).
  3. A compressor (1) as in Claim 1 or 2, characterized by the terminal member (7) having a cylindrical hollow body and a circular protrusion (8) suitable for being fitted into the stepped housing (9).
  4. A compressor (1) as in Claim 3, characterized by the terminal member (7) of which the inner diameter is larger than the diameter of the vibration tube (6).
  5. A compressor (1) as in any one of the above claims, characterized by the terminal member (7) having at least one hole (11) thereon, and a bolt (12) which is fitted into the hole (11) so as to enable the terminal member (7) to be fixed to the cylinder head (4).
  6. A compressor (1) as in any one of the above claims, characterized by a gasket (13) which is disposed between the stepped housing (9) and the terminal member (7) so as to provide leak-proofing.
EP22199121.9A 2021-12-07 2022-09-30 A hermetic compressor with improved vibration tube assembly Active EP4194695B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR202119238 2021-12-07

Publications (2)

Publication Number Publication Date
EP4194695A1 EP4194695A1 (en) 2023-06-14
EP4194695B1 true EP4194695B1 (en) 2024-06-26

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0300607B1 (en) 2003-02-18 2012-02-07 Mounting arrangement for airtight compressor discharge pipe.
CN101871446B (en) * 2010-07-30 2012-05-23 思科普压缩机(天津)有限公司 Exhaust connector
BR102012020725A2 (en) * 2012-08-17 2015-10-20 Whirlpool Sa gas discharge arrangement for a refrigeration compressor
ES2623063T3 (en) * 2013-07-04 2017-07-10 Arçelik Anonim Sirketi Thermally improved alternative hermetic compressor
WO2015127997A1 (en) * 2014-02-28 2015-09-03 Arcelik Anonim Sirketi Hermetic reciprocating mini compressor with reduced size

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