EP2300715B1 - A compressor with improved refrigerant flow performance - Google Patents

A compressor with improved refrigerant flow performance Download PDF

Info

Publication number
EP2300715B1
EP2300715B1 EP09737976.2A EP09737976A EP2300715B1 EP 2300715 B1 EP2300715 B1 EP 2300715B1 EP 09737976 A EP09737976 A EP 09737976A EP 2300715 B1 EP2300715 B1 EP 2300715B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
refrigerant
protrusion
compressor
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
EP09737976.2A
Other languages
German (de)
French (fr)
Other versions
EP2300715A1 (en
Inventor
Bilgin Hacioglu
Umit Fidan
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 SI200931272T priority Critical patent/SI2300715T1/en
Publication of EP2300715A1 publication Critical patent/EP2300715A1/en
Application granted granted Critical
Publication of EP2300715B1 publication Critical patent/EP2300715B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/18—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the effective cross-section of the working surface of the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections

Definitions

  • the present invention relates to a compressor wherein the flow performance of the refrigerant left in the cylinder during the pumping of the refrigerant is improved.
  • a piston is provided for suction of the refrigerant and a cylinder wherein the piston is disposed.
  • a valve table is provided on the cylinder whereon the suction and discharge holes are arranged.
  • the piston receives the refrigerant from the suction hole by reciprocating inside the cylinder and afterwards reciprocates for compressing and pumping the refrigerant through the discharge hole out of the cylinder.
  • One of the criteria for efficient operation of the compressor is the rate of the refrigerant, received into the cylinder in one cycle, discharged out of the cylinder.
  • the piston compresses the refrigerant, all of the refrigerant cannot be discharged from the discharge hole out of the cylinder and the compressor yield decreases.
  • a lot of patent documents explain how to decrease the dead space formed in the cylinder cavity that affects the volumetric efficiency, the refrigerant volume left in the cylinder without being discharged when the piston reaches the top point.
  • the dead space is zero. As the amount of the dead space increases, the compressor efficiency decreases. The reason for this is that, despite consuming energy for discharging the entire refrigerant inside the cylinder by compressing the piston in the entire cylinder volume, the refrigerant equaling to the dead space cannot be discharged out of the cylinder.
  • a boss arranged on one face of the piston that is seated in the delivery orifice occupies the greater part of the dead space during the compression of the refrigerant.
  • the boss and the delivery orifice can be configured of matching cylindrical or frustoconical shapes. Since the cross section through which the refrigerant passes gets narrower as the boss is seated in the delivery orifice and since the boss closes the entire delivery orifice, as a result of formed turbulences, the discharge of the refrigerant gets difficult and losses increase. Some part of the gain by decreasing the dead space is lost by making the flow difficult.
  • a projection formed on the top of the piston and the discharge port are configured to be frustoconical. Since the gradient of the conical surface of said projection is smaller than that of the side wall of the said discharge port, the narrowness of the cross section formed by the projection being seated inside the discharge port is partially decreased.
  • projections are provided on the piston that decrease the dead space without obstructing passage of the refrigerant until the piston reaches the top dead center and enter into the discharge port when the piston reaches the top dead center.
  • the aim of the present invention is the realization of a compressor wherein the flow of the refrigerant through the cylinder to the discharge hole is improved.
  • the compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises at least one groove on the lateral surfaces of the protrusion arranged on the piston, extending from the piston surface towards the top end of the protrusion.
  • the protrusion When the piston reaches the top dead center, that is when the piston surface is at the nearest position to the valve table, the protrusion is partially seated in the discharge hole.
  • the grooves formed on the protrusion By means of the grooves formed on the protrusion, the sudden narrowing of the flow path cross section is prevented and the refrigerant flow from the discharge hole is convenient, with a controllable discharge and without creating much dead space.
  • the sudden increase of the refrigerant acceleration and the temperature and respectively the decrease in yield by the reducing of pressure is prevented.
  • the groove guides the refrigerant towards the discharge hole and shapes the flow of the refrigerant.
  • the groove is formed on the portion of the protrusion near the cylinder axis. Accordingly, refrigerant flow can be improved in the region wherein the refrigerant flow is intense.
  • two opposing inner side walls of the groove extend parallel to each other.
  • the opposing inner side walls of the groove can either be parallel to the protrusion axis or can be inclined with a certain angle therebetween.
  • the groove has a cross section that gets narrower from the piston surface towards the top of the protrusion. Accordingly, the speed of flow that slows when the piston reaches the top dead center is accelerated.
  • the groove has a depth that increases from the piston surface towards the top of the protrusion.
  • the dead space is minimized by improving the refrigerant flow. This results in the increase of the compressor efficiency.
  • the circulation of the refrigerant fluid that is utilized for cooling is maintained by a hermetic compressor (1) having a piston.
  • the compressor (1) comprises a cylinder (2) wherein the refrigerant is received, a cylinder head (3) disposed on the cylinder (2), a valve table (4) whereon the cylinder head (3) is emplaced, a discharge hole (5) on the valve table (4) wherefrom the refrigerant received into the cylinder (2) is discharged, a piston (6) disposed inside the cylinder (2) that activates the refrigerant by reciprocating inside the cylinder (2) ( Figure 1 ).
  • the motion of the motor is transferred by the crank-piston rod-crank pin (not shown in the figures) to the piston (6), maintaining the piston (6) to reciprocate within the cylinder (2).
  • the refrigerant within the cylinder (2) is compressed with the reciprocating motion of the cylinder (2).
  • the opening of the discharge valve (not shown in the figures) covering the discharge hole (5) the refrigerant passes through the discharge hole (5) and reaches the cylinder head (3).
  • the compression process of the refrigerant is performed as the piston (6) starts to approach near the top dead center.
  • the grooves (8) formed on the protrusion (7) prevent the sudden decrease in the cross section wherein the flow takes place as the protrusion (7) enters into the discharge hole (5) and maintains the discharge of the refrigerant from the discharge hole (5) controllably ( Figure 8 ). Accordingly, the temperature rise of the refrigerant with sudden increase in acceleration and the decrease of pressure are prevented.
  • the piston (6) reaches the top dead center, the discharge of the refrigerant from the discharge hole (5) continues by means of the grooves (8) and the dead space in the cylinder (2) is minimized.
  • the flow of the refrigerant is controlled by means of the grooves (8) formed on the protrusion (7).
  • the protrusion (7) is cylinder shaped.
  • the protrusion (7) is configured frustoconically ( Figure 2 to Figure 7 ).
  • the protrusion (7) comprises a groove (8) formed on the region thereof near the cylinder (2) axis ( Figure 6 and Figure 7 ).
  • both opposing inner side walls of the groove (8) extend parallel to each other ( Figure 3 and Figure 4 ).
  • the opposing inner side walls of the groove (8) are inclined such that they remain parallel to each other ( Figure 5 ).
  • the groove (8) has a cross section that gets narrower from the surface of the piston (6) towards the top of the protrusion (7) ( Figure 2 ).
  • the groove (8) has a depth that increases from the surface of the piston (6) towards the top of the protrusion (7) ( Figure3 ).
  • the protrusion (7) and the groove (8) are produced in one piece.
  • the protrusion (7) is mounted on the piston (6) to be fully overlapping with the surface of the piston (6).
  • the refrigerant flow within the cylinder (2) is improved by means of the groove (8) and the flow losses are reduced. Accordingly, much more refrigerant can be discharged from the cylinder (2). This results in the increase of the compressor (1) efficiency.

Landscapes

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

Description

  • The present invention relates to a compressor wherein the flow performance of the refrigerant left in the cylinder during the pumping of the refrigerant is improved.
  • In the hermetic compressors utilized particularly in refrigerators, a piston is provided for suction of the refrigerant and a cylinder wherein the piston is disposed. A valve table is provided on the cylinder whereon the suction and discharge holes are arranged. In the suction process, the piston receives the refrigerant from the suction hole by reciprocating inside the cylinder and afterwards reciprocates for compressing and pumping the refrigerant through the discharge hole out of the cylinder. One of the criteria for efficient operation of the compressor is the rate of the refrigerant, received into the cylinder in one cycle, discharged out of the cylinder. However, when the piston compresses the refrigerant, all of the refrigerant cannot be discharged from the discharge hole out of the cylinder and the compressor yield decreases. In the state of the art, a lot of patent documents explain how to decrease the dead space formed in the cylinder cavity that affects the volumetric efficiency, the refrigerant volume left in the cylinder without being discharged when the piston reaches the top point.
  • In an ideal compressor embodiment, the dead space is zero. As the amount of the dead space increases, the compressor efficiency decreases. The reason for this is that, despite consuming energy for discharging the entire refrigerant inside the cylinder by compressing the piston in the entire cylinder volume, the refrigerant equaling to the dead space cannot be discharged out of the cylinder.
  • In the state of the art French Patent Document No FR2617242 , a boss arranged on one face of the piston that is seated in the delivery orifice occupies the greater part of the dead space during the compression of the refrigerant. The boss and the delivery orifice can be configured of matching cylindrical or frustoconical shapes. Since the cross section through which the refrigerant passes gets narrower as the boss is seated in the delivery orifice and since the boss closes the entire delivery orifice, as a result of formed turbulences, the discharge of the refrigerant gets difficult and losses increase. Some part of the gain by decreasing the dead space is lost by making the flow difficult.
  • In the state of the art United States of America Patent No US5816783 a projection formed on the top of the piston and the discharge port are configured to be frustoconical. Since the gradient of the conical surface of said projection is smaller than that of the side wall of the said discharge port, the narrowness of the cross section formed by the projection being seated inside the discharge port is partially decreased.
  • In the state of the art International Patent Application No WO2005010365 , a compressor is explained comprising a piston with a projection that is eccentrically seated in the outlet orifice.
  • In the state of the art United States of America Patent No US6623258 , a compressor is explained wherein a flow channel is formed between the projection and the walls of the outlet opening.
  • In all these embodiments, projections are provided on the piston that decrease the dead space without obstructing passage of the refrigerant until the piston reaches the top dead center and enter into the discharge port when the piston reaches the top dead center. These projections used with the aim of reducing the dead space result in narrowing of the refrigerant flow path at a specific rate towards the end of the compression cycle. The refrigerant accelerates while passing through this narrowed cross section, the temperature rises and the pressure decreases. This results in reduction of the compressor yield.
  • The aim of the present invention is the realization of a compressor wherein the flow of the refrigerant through the cylinder to the discharge hole is improved.
  • The compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises at least one groove on the lateral surfaces of the protrusion arranged on the piston, extending from the piston surface towards the top end of the protrusion.
  • When the piston reaches the top dead center, that is when the piston surface is at the nearest position to the valve table, the protrusion is partially seated in the discharge hole. By means of the grooves formed on the protrusion, the sudden narrowing of the flow path cross section is prevented and the refrigerant flow from the discharge hole is convenient, with a controllable discharge and without creating much dead space. The sudden increase of the refrigerant acceleration and the temperature and respectively the decrease in yield by the reducing of pressure is prevented. Furthermore, the groove guides the refrigerant towards the discharge hole and shapes the flow of the refrigerant.
  • In another embodiment of the present invention, the groove is formed on the portion of the protrusion near the cylinder axis. Accordingly, refrigerant flow can be improved in the region wherein the refrigerant flow is intense.
  • In another embodiment of the present invention, two opposing inner side walls of the groove extend parallel to each other. In this embodiment, the opposing inner side walls of the groove can either be parallel to the protrusion axis or can be inclined with a certain angle therebetween.
  • In an alternative embodiment of the present invention, the groove has a cross section that gets narrower from the piston surface towards the top of the protrusion. Accordingly, the speed of flow that slows when the piston reaches the top dead center is accelerated.
  • In another alternative embodiment of the present invention, the groove has a depth that increases from the piston surface towards the top of the protrusion.
  • By means of the present invention, the dead space is minimized by improving the refrigerant flow. This results in the increase of the compressor efficiency.
  • A compressor realized in order to attain the aim of the present invention is illustrated in the attached drawings, where:
    • Figure 1 - is the schematic view of a compressor.
    • Figure 2 - is the perspective view of the protrusion in an embodiment of the present invention.
    • Figure 3 - is the perspective view of the protrusion in another embodiment of the present invention.
    • Figure 4 - is the perspective view of the protrusion in an alternative embodiment of the present invention.
    • Figure 5 - is the perspective view of the protrusion in another alternative embodiment of the present invention.
    • Figure 6 - is the perspective view of the protrusion in yet another alternative embodiment of the present invention.
    • Figure 7 - is the perspective view of the protrusion in yet another alternative embodiment of the present invention.
    • Figure 8 - is the cross sectional view when the protrusion is inside the hole.
  • The elements illustrated in the figures are numbered as follows:
    • 1.
    Compressor
    2.
    Cylinder
    3.
    Cylinder head
    4.
    Valve table
    5.
    Discharge hole
    6.
    Piston
    7.
    Protrusion
    8.
    Groove
  • In household appliances, preferably in cooling devices, the circulation of the refrigerant fluid that is utilized for cooling is maintained by a hermetic compressor (1) having a piston.
  • The compressor (1) comprises a cylinder (2) wherein the refrigerant is received, a cylinder head (3) disposed on the cylinder (2), a valve table (4) whereon the cylinder head (3) is emplaced, a discharge hole (5) on the valve table (4) wherefrom the refrigerant received into the cylinder (2) is discharged, a piston (6) disposed inside the cylinder (2) that activates the refrigerant by reciprocating inside the cylinder (2) (Figure 1).
  • The compressor (1) comprises a protrusion (7) arranged on the piston (6) that is seated in the discharge hole (5) when the piston (6) reaches the top dead center, and at least one groove (8) on the lateral surface of the protrusion (7). The groove (8) extends from the surface of the piston (6) towards the top of the protrusion (7).
  • As the dead space decreases with the protrusion (7) having a groove (8) thereon, the flow of the refrigerant in the cylinder (2) is improved and the flow losses are reduced.
  • When the compressor (1) operates, the motion of the motor is transferred by the crank-piston rod-crank pin (not shown in the figures) to the piston (6), maintaining the piston (6) to reciprocate within the cylinder (2). The refrigerant within the cylinder (2) is compressed with the reciprocating motion of the cylinder (2). The refrigerant received into the cylinder (2) through the entrance hole (not shown in the figures) on the valve table (4), is compressed by the piston (6) for reaching the intended pressure. With the opening of the discharge valve (not shown in the figures) covering the discharge hole (5), the refrigerant passes through the discharge hole (5) and reaches the cylinder head (3). The compression process of the refrigerant is performed as the piston (6) starts to approach near the top dead center. In the last stages of the compression process, that is when the protrusion (7) starts to enter into the discharge hole (5), the grooves (8) formed on the protrusion (7) prevent the sudden decrease in the cross section wherein the flow takes place as the protrusion (7) enters into the discharge hole (5) and maintains the discharge of the refrigerant from the discharge hole (5) controllably (Figure 8). Accordingly, the temperature rise of the refrigerant with sudden increase in acceleration and the decrease of pressure are prevented. When the piston (6) reaches the top dead center, the discharge of the refrigerant from the discharge hole (5) continues by means of the grooves (8) and the dead space in the cylinder (2) is minimized. The flow of the refrigerant is controlled by means of the grooves (8) formed on the protrusion (7).
  • In an embodiment of the present invention, the protrusion (7) is cylinder shaped.
  • In another embodiment of the present invention, the protrusion (7) is configured frustoconically (Figure 2 to Figure 7).
  • In another embodiment of the present invention, the protrusion (7) comprises a groove (8) formed on the region thereof near the cylinder (2) axis (Figure 6 and Figure 7).
  • In yet another embodiment of the present invention, both opposing inner side walls of the groove (8) extend parallel to each other (Figure 3 and Figure 4). In this embodiment of the present invention, the opposing inner side walls of the groove (8) are inclined such that they remain parallel to each other (Figure 5).
  • In an embodiment of the present invention, the groove (8) has a cross section that gets narrower from the surface of the piston (6) towards the top of the protrusion (7) (Figure 2).
  • In another embodiment of the present invention, the groove (8) has a depth that increases from the surface of the piston (6) towards the top of the protrusion (7) (Figure3).
  • In an embodiment of the present invention, the protrusion (7) and the groove (8) are produced in one piece.
  • In another embodiment of the present invention, the protrusion (7) is mounted on the piston (6) to be fully overlapping with the surface of the piston (6).
  • By means of the present invention, as the dead space is minimized, the refrigerant flow within the cylinder (2) is improved by means of the groove (8) and the flow losses are reduced. Accordingly, much more refrigerant can be discharged from the cylinder (2). This results in the increase of the compressor (1) efficiency.

Claims (5)

  1. A compressor (1) that comprises a cylinder (2) wherein the refrigerant is received, a cylinder head (3) disposed on the cylinder (2), a valve table (4) whereon the cylinder head (3) is emplaced, a discharge hole (5) on the valve table (4) wherefrom the refrigerant received into the cylinder (2) is discharged, a piston (6) disposed inside the cylinder (2) that activates the refrigerant by reciprocating inside the cylinder (2) and a protrusion (7) arranged on the piston (6) that is seated in the discharge hole (5) when the piston (6) reaches the top dead center characterized in that, at least one groove (8) arranged on the lateral surface of the protrusion (7) whereby the groove (8) extends from the surface of the piston (6) towards the top of the protrusion (7).
  2. A compressor (1) as in Claim 1, characterized in that the groove (8) with opposing two inner side walls extending parallel to each other.
  3. A compressor (1) as in Claim 1, characterized by the groove (8) with opposing two inner side walls extending slopingly.
  4. A compressor (1) as in Claim 1, characterized by a groove (8) having a cross section that gets narrower from the surface of the piston (6) towards the top of the protrusion (7).
  5. A compressor (1) as in any one of the Claims 1 to 4, characterized by a groove (8) having a depth that increases from the surface of the piston (6) towards the top of the protrusion (7).
EP09737976.2A 2008-05-01 2009-04-07 A compressor with improved refrigerant flow performance Active EP2300715B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200931272T SI2300715T1 (en) 2008-05-01 2009-04-07 A compressor with improved refrigerant flow performance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200803042 2008-05-01
PCT/EP2009/054140 WO2009132932A1 (en) 2008-05-01 2009-04-07 A compressor with improved refrigerant flow performance

Publications (2)

Publication Number Publication Date
EP2300715A1 EP2300715A1 (en) 2011-03-30
EP2300715B1 true EP2300715B1 (en) 2015-07-01

Family

ID=40849290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09737976.2A Active EP2300715B1 (en) 2008-05-01 2009-04-07 A compressor with improved refrigerant flow performance

Country Status (4)

Country Link
EP (1) EP2300715B1 (en)
ES (1) ES2547407T3 (en)
SI (1) SI2300715T1 (en)
WO (1) WO2009132932A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107923378A (en) * 2015-08-26 2018-04-17 开利公司 Reciprocating compressor exhaust pition

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136477A (en) 1961-03-28 1964-06-09 Worthington Corp Multi-stage compressor
FR2617242A1 (en) 1987-06-26 1988-12-30 Unite Hermetique Sa Compressor with improved yield
US5816783A (en) 1993-05-19 1998-10-06 Hitachi, Ltd. Electrically driven hermetic compressor
AU4744300A (en) 1999-05-25 2000-12-12 Danfoss Compressors Gmbh Axial piston refrigerant compressor
US6540492B2 (en) * 2001-04-09 2003-04-01 Carrier Corporation Compressor piston with reduced discharge clearance
DE602004029601D1 (en) 2003-07-31 2010-11-25 Arcelik As COMPRESSOR
US6997148B1 (en) 2004-10-15 2006-02-14 Caterpillar Inc. Engine valve actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107923378A (en) * 2015-08-26 2018-04-17 开利公司 Reciprocating compressor exhaust pition

Also Published As

Publication number Publication date
EP2300715A1 (en) 2011-03-30
ES2547407T3 (en) 2015-10-06
WO2009132932A1 (en) 2009-11-05
SI2300715T1 (en) 2015-10-30

Similar Documents

Publication Publication Date Title
KR960010648B1 (en) Refrigeration compressor having a contoured piston
KR101995886B1 (en) Suction damping device of swash plate type compressor
JP5533061B2 (en) Hermetic compressor and refrigeration system
EP2300715B1 (en) A compressor with improved refrigerant flow performance
US20060039808A1 (en) Refrigerant compressor
KR100461232B1 (en) Apparatus for compressing fluid
JP2003193971A (en) Fluid compressing apparatus
JP6876463B2 (en) Compressor piston, compressor and heat pump unit
JP5828136B2 (en) Hermetic compressor
WO2017194516A1 (en) A hermetic compressor with improved sealing
EP2891801B1 (en) Compressor and valve assembly thereof for reducing pulsation and/or noise
KR20130092879A (en) Check valve assembly for compressor
WO2017191228A1 (en) A hermetic compressor with increased performance
CN212155150U (en) Two-stage rotary compressor
EP2013481B1 (en) A compressor
KR102005745B1 (en) Compressor check valve
KR102051661B1 (en) Control valve and variable capacity type compressure
WO2017191229A1 (en) A hermetic compressor with increased performance
KR20200034454A (en) A compressor and electronic device using the same
US20050129548A1 (en) Suction valve and reciprocating compressor having the same
KR20120102904A (en) Gas compressor
EP1680599B1 (en) A compressor
JP2012102610A (en) Hermetic compressor, and refrigeration device
WO2014072131A1 (en) Compressor comprising cylinder head
JP2012159071A (en) Hermetic compressor and refrigerating device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20101129

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

17Q First examination report despatched

Effective date: 20110617

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150401

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 734122

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150715

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602009031946

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2547407

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20151006

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150701

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151002

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151001

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 19412

Country of ref document: SK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151101

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151102

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602009031946

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

26N No opposition filed

Effective date: 20160404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160407

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160430

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160407

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160407

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 734122

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20090407

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160430

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150701

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20180525

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190418

Year of fee payment: 11

Ref country code: IT

Payment date: 20190429

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20190418

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20190405

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20190423

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190408

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200828

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190408

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602009031946

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 734122

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200407

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 19412

Country of ref document: SK

Effective date: 20200407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201103

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200407

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240319

Year of fee payment: 16