EP1957796B1 - Compresseur - Google Patents

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Publication number
EP1957796B1
EP1957796B1 EP06819768A EP06819768A EP1957796B1 EP 1957796 B1 EP1957796 B1 EP 1957796B1 EP 06819768 A EP06819768 A EP 06819768A EP 06819768 A EP06819768 A EP 06819768A EP 1957796 B1 EP1957796 B1 EP 1957796B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
compressor
piston
cylinder sleeve
grooves
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.)
Not-in-force
Application number
EP06819768A
Other languages
German (de)
English (en)
Other versions
EP1957796A1 (fr
Inventor
Husnu Kerpicci
Tolga Gungor
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 SI200630744T priority Critical patent/SI1957796T1/sl
Publication of EP1957796A1 publication Critical patent/EP1957796A1/fr
Application granted granted Critical
Publication of EP1957796B1 publication Critical patent/EP1957796B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F04B39/0253—Hermetic compressors with oil distribution channels in the rotating shaft using centrifugal force for transporting the oil
    • 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
    • F04B39/121—Casings

Definitions

  • the present invention relates to a compressor, preferably utilized in cooling devices, wherein the thermodynamic efficiency is improved.
  • cooling is provided by the circulation of a refrigerant fluid in a cooling cycle formed of a condenser that transfers the heat outside, a capillary tube that lowers the pressure, an evaporator that absorbs the heat and a compressor.
  • the circulating fluid is activated by a piston inside a cylinder that is driven by a crankshaft. During these processes, the cylinder and the circulating fluid filling the cylinder is heated, and the cylinder, particularly the walls of the cylinder cannot be cooled. Not being able to cool the cylinder leads to an inefficient performance of the compressor.
  • cooling of the cylinder is provided by conduction of heat via the body. This process is not sufficient for cooling the cylinder.
  • the object of the present invention is the realization of a compressor, which provides better cooling of the cylinder during the motion of the piston within the cylinder, aspirating and compressing of the circulating fluid without being overheated, with an improved efficiency, capacity and coefficient of performance.
  • the oil within the compressor that is aspirated by the crankshaft is delivered to the hole corresponding on the cylinder by the guide situated at the end of the crankshaft and the oil passing through the hole flows into the grooves positioned inside the cylinder, between the cylinder and the cylinder sleeve. Accordingly, the high temperature caused by the motion of the piston within the cylinder sleeve, is transferred to the oil flowing between the cylinder and the cylinder sleeve.
  • the oil entering the cylinder from above moves within the grooves by the effect of gravity and is drained out of the body, into the compressor by means of the discharge channels situated at the bottom portion of the cylinder.
  • the heat transferred from the cylinder to the oil can be conducted out of the compressor by the help of the compressor shell in communication with the oil.
  • the heat formed on the cylinder can be conducted out of the cylinder by means of the oil and the performance of the cylinder is enhanced.
  • Figure 1 - is the schematic view of a compressor.
  • Figure 2 - is the perspective view of a cylinder sleeve not having a groove on it.
  • Figure 3 - is the perspective view of a cylinder sleeve having sloped projections guiding the flow to the grooves.
  • Figure 4 - is the perspective view of a cylinder sleeve having grooves on it.
  • Figure 5 - is the side view of a cylinder sleeve having grooves on it.
  • Figure 6 - is the perspective view of a body and a piston assembled in a cylinder on the body.
  • Figure 7 - is the exploded perspective view of a body, a valve table, a valve plate, a cylinder sleeve, a piston rod, a crankshaft and more than one gasket.
  • Figure 8 - is the perspective view of a cylinder sleeve situated inside a body, a crankshaft, and a guide situated on a crankshaft.
  • Figure 9 - is the detail view of a cylinder sleeve, a crankshaft, and a body having a guide situated on a crankshaft.
  • Figure 10 - is another detail view of a cylinder sleeve, a crankshaft, and a body having a guide situated on a crankshaft.
  • Figure 11 - is the detail view of a body comprising a cylinder having more than one groove and projections.
  • the circulation of the circulating fluid that is utilized for cooling is maintained by a compressor (1).
  • the compressor (1) comprises a motor (2), a cylinder (3) providing pumping of the refrigerant gas inside, a piston for compressing the refrigerant gas, a crankshaft (5) transferring the motion received from the motor (2), a body (8) on which the parts like the crankshaft (5), the cylinder (3) and the piston (4) are situated, a guide (17) providing to convey the oil aspirated by the crankshaft (5) to the desired areas, a cylinder sleeve (9) separate from the body (8) arranged within the cylinder (3), inside which the piston (4) moves, pumping the circulating fluid by aspirating and compressing, and at least one hole (18) situated on the body (8) such that it corresponds with the outlet of the guide (17), providing to deliver the oil conveyed by the guide (17) between the cylinder sleeve (9) and the cylinder (3), helping to cool the walls of the cylinder (3) and not to increase the temperature of the circulating fluid entering into the cylinder sleeve (9).
  • the cylinder sleeve (9) helps in attaining the circularity of the cylinder (3) that has a suitable configuration for the piston (4). Consequently the movement of the piston (4) between the aspiration and compression periods is without oscillations. Furthermore, the leaks during the compression of the circulation fluid are prevented, providing to increase the thermodynamic efficiency.
  • the body (8) comprises a housing (13) inside which the crankshaft (5) rotates.
  • the compressor (1) comprises at least one discharge channel (19) that provides to discharge the oil delivered between the cylinder sleeve (9) and the cylinder (3).
  • the oil aspirated by the rotational movement of the crankshaft (5) and delivered to the hole (18) by the guide (17) flows between the cylinder sleeve (9) and the cylinder (3) and is released on the outer surfaces of the body (8) by the discharge channel (19).
  • the oil draining from the outer surfaces of the body (8) and helping in its cooling is re-aspirated by the crankshaft (5) and collected in the compressor (1) case to be delivered to the guide (17).
  • the cylinder sleeve (9) comprises one or more grooves (16) on its outer surface, for transferring the heat formed during the movement of the piston (4), providing to guide the oil delivered inside and one or more projections (20) situated around the groove (16) ( Figure 3, Figure 4 ). Accordingly the oil is provided to be spread over the whole surface.
  • the cylinder sleeve (9) comprises one or more channels (15) inside the projections (20) in communication with the grooves (16).
  • the cylinder sleeve (9) comprises projections (20) having trapezoidal sections and sloping upper surfaces, guiding the oil delivered on it to the grooves (16) and channels (15) inside the projections (20) in communication with the grooves (16) ( Figure 4 ).
  • the delivery of the oil flowing into the grooves (16) to the other portions of the cylinder sleeve (9) is provided by the channels (15) inside the projections (20) and the grooves (16) in communication with the other grooves (16). Since the projections (20) are farther away from the surface of the piston (4) in contact with the cylinder sleeve (9) than the grooves (16), they increase the heat transfer surfaces and hence the cooling. The channels (15) also contribute to this cooling process and provide the projections (20) to cool more efficiently.
  • a cylinder (3) comprising one or more grooves (26) that provide to guide the oil delivered between itself and the cylinder sleeve (9) situated inside it and more than one projection (30) positioned between the grooves (26) to separate the grooves (26) from each other ( Figure 11 ).
  • the cylinder sleeve (9) comprises a cut out (14) that facilitates the assembly of the piston (4), and increases the coefficient of performance by decreasing the surface of friction during the movement of the piston (4).
  • the compressor (1) comprises a piston rod (6) that transfers the movement delivered from the crankshaft (5) to the piston (4), a wrist pin (7) that connects the piston rod (6) with the piston (4), a valve table (10) providing the piston (4) to compress the circulating fluid, a valve plate (11) on the valve table (10), a cylinder head (12) allowing the valve table (10) to be fixed to the body (8), a gasket (50) between the cylinder sleeve (9) and the body (8), another gasket (51) between the cylinder sleeve (9) and the valve plate (5) and yet another gasket (52) between the valve plate (11) and the cylinder head (12).
  • the piston (4) is actuated back and forth inside the cylinder (3) by means of a piston rod (6) connected to the crankshaft (5), providing the circulating fluid to be aspirated into the cylinder (3) and compressed.
  • the suction muffler and the valve cover fixed on the valve table (10) having a valve plate (11) situated on the cylinder (3), the circulating fluid is aspirated from the circulation cycle and re-pumped into the circulation cycle.
  • the circulating fluid aspirated into the cylinder (3) by the opening of the valve plate (11) fills in the cylinder (3) until the piston (4) reaches the lower dead point.
  • the increase of the circulating fluid temperature during compression leads to the increase of the specific volume of the circulating fluid and hence to the decrease of the compression efficiency. Subsequently, the temperature of the circulating fluid has to be decreased particularly during the compression process and the cylinder (3) walls have to be cooled in order to increase compression efficiency.
  • a compressor (1) comprising at least one hole (18) bored on the overheated portions of the cylinder (3) and/or the cylinder sleeve (9) is utilized.
  • the oil flowing from the hole (18) flows into the grooves (16) situated at these overheated portions of the cylinder sleeve (9) and provides its cooling.
  • the cylinder sleeve (9) of the present invention being produced separately from the body (8), without encountering with the problems of cylinder (3) production on the body (8), the circularity of the surfaces and the surface roughness inside which the piston (4) moves can be enhanced. Consequently the factors that result in the heating of the piston (4) during its movement in the cylinder (3) are diminished and the grooves (16, 26) and the projections (20, 30) on the cylinder sleeve (9) or the cylinder (3) are cooled much better, increasing the performance of the compressor (1).
  • the heat transfer coefficient of the circulating fluid in the compressor (1) is higher than the heat transfer coefficient of the body (8), the contribution of the oil delivered to the piston (4) area can be more intensive in cooling the cylinder (3).
  • the heat transfer from the cylinder (3) surfaces in contact with the circulating fluid in the compressor (1) is further increased. Accordingly the increase in the temperature of the circulating fluid during the compression process is reduced. This in turn provides an increase in the compression process and the thermodynamic efficiency.
  • compressors (1) particularly in hermetic compressors, the energy consumed during the compression of the circulating fluid constitutes the largest share, approximately 70 %, in determining the capacity of a compressor (1). Therefore the gain from enhancing the compression is directly reflected in the thermodynamic efficiency of the compressor (1). This means that there is an increase in the coefficient of performance of the compressor (1). Therefore, by means of the enhanced circularity of the cylinder sleeve (9) and its cooling, the compression process can be carried out isothermally and the thermodynamic efficiency can be increased by a considerable amount. By this means, contribution is made to one of the important limitations in the production of compressors (1), the formation of the ideal circularity of the cylinder (3) hole (18).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Claims (8)

  1. Un compresseur (1) utilisé dans les appareils ménagers, de préférence dans les réfrigérateurs, comprenant un moteur (2), un cylindre (3) assurant le pompage du gaz réfrigérant à l'intérieur, un piston (4) pour comprimer le gaz réfrigérant, un vilebrequin (5) transmettant la motion provenant du moteur (2), un corps (8) sur lequel les parties telles que le vilebrequin (5), le cylindre (3) et le piston (4) sont situés, un guide (17) assurant la transmission de l'huile aspirée par le vilebrequin (5) sur les zones souhaitées, une chemise de cylindre (9) séparée du corps (8), disposée dans le cylindre (3), et à l'intérieur de laquelle le piston (4) se déplace, pompant du fluide circulant par aspiration et compression, et caractérisé par au moins un trou (18) situé sur le corps (8) de manière à correspondre avec la sortie du guide (17), prévoyant de livrer l'huile transportée par le guide (17) entre la chemise du cylindre (9) et le cylindre (3), en aidant le refroidissement des parois du cylindre (3) toute en ne pas augmentant la température du fluide circulant qui entre dans la chemise de cylindre (9).
  2. Un compresseur (1) selon la Revendication 1, caractérisé par au moins un canal de déchargement (19) qui assure le déchargement de l'huile provenant de l'espace entre la chemise du cylindre (9) et le cylindre (3).
  3. Un compresseur (1) selon la Revendication 1 ou 2, caractérisé par une chemise de cylindre (9) comprenant une ou plusieurs rainures (16) sur sa surface extérieure, pour le transfert de la chaleur formée pendant le mouvement du piston (4), permettant de guider l'huile livrée à l'intérieur et une ou plusieurs projections (20) située autour de la rainure (16).
  4. Un compresseur (1) selon la Revendication 3, caractérisé par une chemise de cylindre (9) qui comprend un ou plusieurs canaux (15) à l'intérieur de la projection (20) en communication avec les rainures (16).
  5. Un compresseur (1) selon la Revendication 1 ou 2, caractérisé par un cylindre (3) comprenant un ou plusieurs rainures (26) permettant de guider l'huile provenant de l'espace entre lui-même et la chemise de cylindre (9) situé dedans et plusieurs projections (30) localisées entre les rainures (26) pour séparer les rainures (26) les unes des autres.
  6. Un compresseur (1) selon la Revendication 1 ou 2, caractérisé par une chemise de cylindre (9) comprenant un découpage (14) qui facilite l'assemblage du piston (4), et augmente le coefficient de performance en diminuant la surface de frottement pendant le mouvement du piston (4).
  7. Un compresseur (1) selon l'une quelconque des revendications de 1 à 5, caractérisé par une chemise de cylindre (9) comprenant des projections (20) ayant des sections de forme trapézoïdale et des surfaces supérieures en pente, guidant l'huile qui y est livrée dans les rainures (16) et les canaux (15) à l'intérieur des projections (20) en communication avec les rainures (16).
  8. Un compresseur (1) selon l'une quelconque des revendications précédentes, caractérisé par au moins un trou (18) placé sur les portions où le cylindre (3) et/ou la chemise de cylindre (9) sont surchauffés.
EP06819768A 2005-11-28 2006-11-27 Compresseur Not-in-force EP1957796B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200630744T SI1957796T1 (sl) 2005-11-28 2006-11-27 Kompresor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200504719 2005-11-28
PCT/EP2006/068937 WO2007060238A1 (fr) 2005-11-28 2006-11-27 Compresseur

Publications (2)

Publication Number Publication Date
EP1957796A1 EP1957796A1 (fr) 2008-08-20
EP1957796B1 true EP1957796B1 (fr) 2010-06-30

Family

ID=37663763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06819768A Not-in-force EP1957796B1 (fr) 2005-11-28 2006-11-27 Compresseur

Country Status (7)

Country Link
EP (1) EP1957796B1 (fr)
AT (1) ATE472679T1 (fr)
DE (1) DE602006015228D1 (fr)
DK (1) DK1957796T3 (fr)
ES (1) ES2346084T3 (fr)
SI (1) SI1957796T1 (fr)
WO (1) WO2007060238A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9234480B2 (en) 2012-07-04 2016-01-12 Kairama Inc. Isothermal machines, systems and methods

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7765917B2 (en) * 2007-01-12 2010-08-03 Black & Decker Inc. Air compressor
BRPI0802447A2 (pt) * 2008-07-15 2010-03-23 Whirlpool Sa compressor de refrigeraÇço com sistema de resfriamento interno
BRPI0902430A2 (pt) * 2009-07-24 2011-04-05 Whirlpool Sa compressor hermético
CN108425833A (zh) * 2018-03-12 2018-08-21 珠海格力节能环保制冷技术研究中心有限公司 用于活塞压缩机的泵体组件、活塞压缩机及换热系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492529A (en) * 1982-06-21 1985-01-08 Grisbrook Robert B Compressors efficiency improvement
JPS6022081A (ja) * 1983-07-15 1985-02-04 Aisin Seiki Co Ltd 熱交換器内蔵型の往復式圧縮機
JP2770173B2 (ja) * 1988-05-31 1998-06-25 アイシン精機株式会社 往復式圧縮機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9234480B2 (en) 2012-07-04 2016-01-12 Kairama Inc. Isothermal machines, systems and methods

Also Published As

Publication number Publication date
ES2346084T3 (es) 2010-10-08
EP1957796A1 (fr) 2008-08-20
DE602006015228D1 (de) 2010-08-12
WO2007060238A1 (fr) 2007-05-31
SI1957796T1 (sl) 2010-09-30
DK1957796T3 (da) 2010-10-25
ATE472679T1 (de) 2010-07-15

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