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WO2019091665A1 - A hermetic compressor with improved sealing - Google Patents

A hermetic compressor with improved sealing Download PDF

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Publication number
WO2019091665A1
WO2019091665A1 PCT/EP2018/076777 EP2018076777W WO2019091665A1 WO 2019091665 A1 WO2019091665 A1 WO 2019091665A1 EP 2018076777 W EP2018076777 W EP 2018076777W WO 2019091665 A1 WO2019091665 A1 WO 2019091665A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
cylinder
channel
compressor
insulating plate
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.)
Ceased
Application number
PCT/EP2018/076777
Other languages
English (en)
French (fr)
Inventor
Semih GUREL
Husnu Kerpicci
Ahmet Refik Ozdemir
Ercan KURTULDU
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
Priority to EP18783415.5A priority Critical patent/EP3707380B1/en
Priority to PL18783415.5T priority patent/PL3707380T3/pl
Publication of WO2019091665A1 publication Critical patent/WO2019091665A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates

Definitions

  • the present invention relates to a hermetic type compressor suitable for use in cooling devices.
  • hermetic compressors In hermetic compressors, the refrigerant is sucked from and pumped back to the refrigeration cycle by means of a piston operating in a cylinder.
  • the refrigerant with increased pressure and temperature while the refrigerant in the cylinder volume is compressed by the piston fills into the exhaust chamber in the cylinder head and from there is sent to the refrigeration cycle.
  • the cylinder head in the compressor compensates the compressive stress occurring due to the compression of the refrigerant as a result of the piston movement and enables the refrigerant with high temperature and pressure to be delivered to the exhaust muffler.
  • the refrigerant After being compressed by the piston and reaching a high pressure, the refrigerant is directed to the exhaust chamber, and the pressure difference between the interior of the compressor casing and the exhaust chamber in the cylinder head.
  • the refrigerant leaks into the interior of the casing through the walls of the cylinder head and valve table, casing pressure losses due to the passage of the refrigerant into the casing and decreasing the pressure of the refrigerant introduced into the refrigerant cycle.
  • the mixing of the refrigerant with the lubricant in the casing causes a decrease in the refrigerant amount and lubrication problems.
  • the aim of the present invention is the realization of a compressor wherein refrigerant losses are prevent by improving the sealing between the cylinder head and the valve table.
  • the hermetic compressor comprises a valve table that is disposed between the cylinder and the cylinder head, that enables the refrigerant sucked from and pumped to the refrigeration cycle to be guided and whereon suction and exhaust ports and valves are disposed, and a cylinder heat that enables the pumped refrigerant to be directed.
  • a plastic insulating plate is disposed between the valve table and the cylinder head so as to provide leak-proofing.
  • a channel that peripherally extends at the inner side of the edges of the cylinder head is provided, and a protrusion that is arranged on the surface of the insulating plate seated on the cylinder head and that is fitted into said channel is provided.
  • the protrusion is press-fitted into the channel.
  • an o-ring is disposed between the protrusion and the channel.
  • cavities are provided on the cylinder head and pins that are fitted into said cavities are provided on the insulating plate.
  • the leak-proofing between the cylinder head and the valve table is improved, refrigerant losses are prevented and the performance is increased.
  • Figure 1 - is the cross-sectional view of a compressor.
  • Figure 2 - is the exploded view of a compressor body, a valve table, an insulating plate and a cylinder head.
  • Figure 3 - is the schematic view of the insulating plate and the cylinder head in separated state in the embodiment of the present invention.
  • Figure 4 - is the schematic view of the insulating plate and the cylinder head in joined state.
  • Figure 5 - is the perspective view of a cylinder head.
  • Figure 6 - is the perspective view of an insulating plate.
  • Figure 7 - is the perspective view of a cylinder head whereon ribs are provided.
  • Figure 8 - is the perspective view of the o-ring in an embodiment of the present invention.
  • the hermetic compressor (1) suitable for use for circulation of the refrigerant fluid in cooling devices, for example refrigerators comprises a casing (2); a cylinder (3) that is disposed in the casing (2) and that enables the refrigerant to be sucked and pumped; a piston (4) that is operated in the cylinder (3); a body (5) that supports the cylinder (3) and the piston (4); a cylinder head (6) that enables the refrigerant sucked and pumped by means of the cylinder head (4) into the cylinder (3) to be directed; an exhaust chamber (7) that is disposed in the cylinder head (6) and wherein the pumped refrigerant fluid is accumulated; a metallic valve table (8) that is disposed between the cylinder (3) and the cylinder head (6); a suction port (9), an exhaust port (10) and suction and exhaust valves (not shown in figures) that are arranged on the valve table (8); an insulating plate (11) that is produced from a thermally insulating material, preferably plastic, and that is
  • the compressor (1) of the present invention comprises
  • a rim (13) that is arranged on the surface, that is seated on the cylinder head (6), of the insulating plate (11), that peripherally extends at the inner side of the edges of the insulating plate (11) parallel to the edges such that a gap remains at the region where the muffler head (19) passes, and that is fitted into said channel (12) when the cylinder head (6) is mounted onto the cylinder (3).
  • the channel (12) is borne at a distance of 0.5 - 2.5 mm from the outer edge of the cylinder head (6) and has a depth of 0.5 - 2 mm.
  • the rim (13) is formed at a distance of 0.5 - 2.5 mm from the outer edge of the insulating plate (11) and has a height of 2 mm. The tolerances of the dimensions of the channel (12) and the rim (13) are determined such that the rim (13) is mounted into the channel (12) in a press-fit manner.
  • the leak-proofing is improved and refrigerant losses into the casing (2) are prevented.
  • the compressor (1) comprises an o-ring (14) that is formed as an open curve so as to leave a gap where the muffler head (19) passes, that is fitted into the channel (12) and that is squeezed between the base of the channel (12) and the rim (13) ( Figure 8).
  • the compressor (1) comprises a plurality of cavities (15) that are arranged on the surface, in contact with the insulating plate (11), of the cylinder head, at a region surrounded by the channel (12), and a plurality of deformable pins (16) that are provided at the surface, in contact with the cylinder head (6), of the insulating plate (11), at the region surrounded by the rim (13), that extend towards the cylinder head (6) in a direction perpendicular to the insulating plate (11) and that are crushed by being fitted into said cavities (15) ( Figure 5, Figure 6).
  • the compressor (1) comprises a channel (12) the length of which is increased by bending outwards two opposite arms of the quadrilateral channel (12), and a rim (13) the length of which is increased by bending outwards two opposite arms thereof so as to be fitted into said channel (12).
  • the channel (12) and the rim (13) with increased lengths, hence increased contact areas improve the leak-proofing, the strength and the centering of the cylinder head (6) with the insulating plate (11) - valve table (8) ( Figure 5, Figure 6).
  • the compressor (1) comprises a plurality of ribs (17) that are disposed at the rear surface of the cylinder head (6) where the bolts are mounted and that extend from the center towards the edges and/or towards the corners where the bolt holes are arranged.
  • the ribs (17) improve the strength of the cylinder head (6) and absorb the forces acting on the cylinder head (6) as a result of the movement of the piston (4) in the cylinder (3) ( Figure 7).
  • the compressor (1) comprises a clamp (not shown in figures) that is connected to the cylinder head (6) and the body (5) and that increases the pressing force of the cylinder head (6) onto the insulating plate (11), thus improving the leak-proofing.
  • the leak-proofing between the cylinder head (6) and the valve table (8) is improved, thus refrigerant leaks are prevented, the mass flow rate losses of the refrigerant are minimized, the coefficient of performance (COP) of the compressor (1) is increased, and the efficiency of the refrigeration cycle is improved.
  • the need for using an elastomer gasket between the cylinder head (6) and the insulating plate (11) is eliminated, thus providing cost advantage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
PCT/EP2018/076777 2017-11-10 2018-10-02 A hermetic compressor with improved sealing Ceased WO2019091665A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18783415.5A EP3707380B1 (en) 2017-11-10 2018-10-02 A hermetic compressor with improved sealing
PL18783415.5T PL3707380T3 (pl) 2017-11-10 2018-10-02 Hermetyczna sprężarka z ulepszonym uszczelnieniem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2017/17699A TR201717699A2 (tr) 2017-11-10 2017-11-10 Sizdirmazliği i̇yi̇leşti̇ri̇len hermeti̇k kompresör
TRA2017/17699 2017-11-10

Publications (1)

Publication Number Publication Date
WO2019091665A1 true WO2019091665A1 (en) 2019-05-16

Family

ID=63798977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/076777 Ceased WO2019091665A1 (en) 2017-11-10 2018-10-02 A hermetic compressor with improved sealing

Country Status (4)

Country Link
EP (1) EP3707380B1 (tr)
PL (1) PL3707380T3 (tr)
TR (1) TR201717699A2 (tr)
WO (1) WO2019091665A1 (tr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577898A (en) * 1995-07-27 1996-11-26 Samsung Electronics Co., Ltd. Suction muffler arrangement for a hermetic reciprocating compressor
JPH10122149A (ja) * 1996-10-25 1998-05-12 Sanden Corp 弁板装置
US6120259A (en) * 1997-10-21 2000-09-19 Calsonic Corporation Swash plate type compressor
US6553893B2 (en) * 2000-03-31 2003-04-29 Respironics, Inc. Piston assembly for reducing the temperature of a compressor cup seal
EP1960669B1 (en) 2005-12-16 2010-06-16 Whirlpool S.A. Hermetic compressor with internal thermal insulation
WO2012166051A1 (en) 2011-06-01 2012-12-06 Panasonic Corporation A valve plate for a compressor
WO2015000524A1 (en) * 2013-07-04 2015-01-08 Arcelik Anonim Sirketi Sealing assembly for reciprocating hermetic compressor
US20150275883A1 (en) * 2012-10-03 2015-10-01 Whirlpool S.A. Thermal insulation system for the discharge of gas in a refrigeration compressor
WO2017030986A1 (en) * 2015-08-14 2017-02-23 Sabic Global Technologies B.V. Cylinder head for compressor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577898A (en) * 1995-07-27 1996-11-26 Samsung Electronics Co., Ltd. Suction muffler arrangement for a hermetic reciprocating compressor
JPH10122149A (ja) * 1996-10-25 1998-05-12 Sanden Corp 弁板装置
US6120259A (en) * 1997-10-21 2000-09-19 Calsonic Corporation Swash plate type compressor
US6553893B2 (en) * 2000-03-31 2003-04-29 Respironics, Inc. Piston assembly for reducing the temperature of a compressor cup seal
EP1960669B1 (en) 2005-12-16 2010-06-16 Whirlpool S.A. Hermetic compressor with internal thermal insulation
WO2012166051A1 (en) 2011-06-01 2012-12-06 Panasonic Corporation A valve plate for a compressor
US20150275883A1 (en) * 2012-10-03 2015-10-01 Whirlpool S.A. Thermal insulation system for the discharge of gas in a refrigeration compressor
WO2015000524A1 (en) * 2013-07-04 2015-01-08 Arcelik Anonim Sirketi Sealing assembly for reciprocating hermetic compressor
WO2017030986A1 (en) * 2015-08-14 2017-02-23 Sabic Global Technologies B.V. Cylinder head for compressor

Also Published As

Publication number Publication date
EP3707380A1 (en) 2020-09-16
PL3707380T3 (pl) 2022-10-03
EP3707380B1 (en) 2022-06-08
TR201717699A2 (tr) 2019-05-21

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