EP2013481B1 - Comresseur - Google Patents

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Publication number
EP2013481B1
EP2013481B1 EP07728617.7A EP07728617A EP2013481B1 EP 2013481 B1 EP2013481 B1 EP 2013481B1 EP 07728617 A EP07728617 A EP 07728617A EP 2013481 B1 EP2013481 B1 EP 2013481B1
Authority
EP
European Patent Office
Prior art keywords
discharge
cylinder
valve
discharge valve
stopper
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
EP07728617.7A
Other languages
German (de)
English (en)
Other versions
EP2013481A1 (fr
Inventor
Sedat Samut
Bora Abdik
Serkan Kara
Tolga Yaroglu
Fatih Akbas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP2013481A1 publication Critical patent/EP2013481A1/fr
Application granted granted Critical
Publication of EP2013481B1 publication Critical patent/EP2013481B1/fr
Active 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves

Definitions

  • the present invention relates to a compressor comprising a valve plate and which is used in cooling devices.
  • the discharge valve has to open and close in time and at the desired cylinder pressure value in order to prevent the discharge loss that occurs during the passage of the refrigerant fluid into the discharge chamber.
  • the oil in the compressor casing is also present on the surfaces of the discharge valve and the stopper and the discharge valve that contacts the stopper may adhere to the stopper due to the adhesion force of oil and since it can't retract during the suction process in the cylinder, the discharge passage is left open.
  • the refrigerant gas causes discharge loss by passing through the discharge passage, receding back to the cylinder and the compressor capacity is reduced.
  • valve unit used in hermetic reciprocating compressors.
  • the discharge valve is mounted within a stepped recess formed in an outer side of the valve plate for opening and closing the discharge passage and, by means of this recess, the length of the discharge passage between the piston dead spot and the discharge chamber is shortened, reducing the amount of gas remaining in this passage before starting the cycle, thus increasing compressor capacity.
  • the movement of the discharge valve is constrained by a bending spring overlying said discharge valve and the movement of the discharge valve and the bending spring is restrained by a stopper member overlying both.
  • a reciprocating piston machine with at least one inlet and/or outlet valve that has a strip, tongue or lamella shaped closing member.
  • the opening movements of the closing member are limited through a stroke restrictor assigned to each valve.
  • the stroke restrictor has or defines at least one ventilation hole inside the contact area of the closing member. This ventilation hole prevents the formation of air cushions between the closing member and the corresponding stroke restrictor effectively. In the absence of the ventilation hole, the air cushion can limit the opening movements of the closing member prematurely, which in turn could lead to the generation of additional noise.
  • the aim of the present invention is the realization of a compressor wherein the performance of the valves situated on the valve plate is improved.
  • the refrigerant fluid is sucked and pumped by a piston moving in the cylinder and is delivered from the suction chamber to the cylinder and to the discharge chamber from the cylinder by means of the opening, closing of the suction and exhaust valves disposed on the valve plate situated between the cylinder and the cylinder head.
  • the movement of the discharge valve during opening is constrained by a stopper mounted on the valve plate.
  • the contact area between the stopper and the discharge valve is decreased, reducing the adhesion effect particularly due to the oil therebetween and providing the exhaust valve to close by preventing it from remaining adhered to the stopper when it has to close.
  • cut-outs are provided on the stopper decreasing the contact area of the discharge valve.
  • the discharge valve when opened, only contacts those surfaces excluding the cut-out and the adhesion force is reduced.
  • the contact of the upper surface of the discharge valve with the high pressure gas in the discharge chamber is provided by means of the cut-out formed on the stopper, thus gas pressure acts on the upper surface of the discharge valve decreasing the pressure imbalance between the two surfaces of the discharge valve and providing easier opening and closing.
  • the stopper comprises protrusions that decrease the contact area of the discharge valve, providing the discharge valve, when opened, to only contact the ends thereof.
  • the discharge valve when opened, it only contacts the ends of the protrusions on the stopper thus reducing the adhesion force.
  • the circulation of the refrigerant fluid is provided by a compressor (1).
  • the compressor (1) comprises a casing (2) wherein the components within are held, a cylinder (3) for pumping the refrigerant fluid, a piston (4) operating in the cylinder (3), a cylinder head (5) providing the circulation of the refrigerant fluid sucked and pumped by the reciprocation of the piston (4), a valve plate (6) disposed between the cylinder (3) and the cylinder head (5), a suction chamber (7) under the cylinder head (5) wherein the sucked refrigerant is accumulated, a discharge chamber (8) wherein the pumped refrigerant fluid accumulates, an inlet passage (9) and a discharge passage (10) situated on the valve plate (6) providing entry and exit of the refrigerant fluid in the suction and discharge chambers(7, 8) into/from the cylinder (3).
  • the compressor (1) furthermore comprises a suction valve (11) situated on one side of the valve plate (6), that opens and closes the inlet passage (9) during the reciprocation of the piston (4) providing the refrigerant fluid to be aspirated into the cylinder (3) and a discharge valve (12) on the other side of the valve plate (6), that opens and closes the discharge passage (10) during the reciprocation of the piston (4) providing the refrigerant fluid to be discharged from the cylinder (3).
  • a suction valve (11) situated on one side of the valve plate (6), that opens and closes the inlet passage (9) during the reciprocation of the piston (4) providing the refrigerant fluid to be aspirated into the cylinder (3)
  • a discharge valve (12) on the other side of the valve plate (6), that opens and closes the discharge passage (10) during the reciprocation of the piston (4) providing the refrigerant fluid to be discharged from the cylinder (3).
  • the oil put into the casing provides the components in the compressor (1) to move with ease.
  • the compressor (1) of the present invention comprises a stopper (13) that
  • the cut-out (14) is preferably shaped like a hole bored on the stopper (13) having various sizes ( Figures 7 , 8 , 9 , 10 ).
  • the cut-out (14) is made by hollowing out a part on the stopper (13) by perforating or drilling process.
  • the discharge valve (12) When the discharge valve (12) opens, it impacts on the surfaces of the stopper (13) excluding the cut-outs (14) and contact is maintained on the surface of the stopper (13) in an area less than the area of the discharge valve (12). Consequently, the adhesion force effect of the oil between the discharge valve (12) and the stopper (13) is reduced, minimizing the thermodynamic losses that occur in the discharge phase of the refrigerant cycle.
  • the discharge valve (12) opens contacting the stopper (13) and when the piston (4) is in the sucking stroke, the discharge valve (12), released from the stopper (13), closes the discharge passage (10) in time since the contact surface therebetween is reduced due to the cut-outs (14) and accordingly the discharge gas leakage is prevented.
  • the refrigerant fluid pumped into the discharge chamber (8) is not aspirated back into the cylinder (3) again and the compressor (1) capacity is enhanced since the discharge passage (10) is closed in time during the suction process of the refrigerant fluid pumped into the discharge chamber (8).
  • the upper surface of the discharge valve (12) is furthermore provided to come into contact with the high pressure gas in the discharge chamber (8). Accordingly, gas pressure acts on the upper surface of the discharge valve (12) and the pressure imbalance between the two surfaces of the discharge valve (12) is reduced providing easier opening and closing.
  • the rotational movement of the motor is transmitted to the piston (4) by means of the crank-connecting rod mechanism providing the reciprocative movement of the piston (4).
  • the process of sucking of the refrigerant fluid to/from the cylinder (3) is provided.
  • the refrigerant fluid entering the cylinder (3) by means of the inlet passage (9) on the valve plate (6) and by the opening, closing suction valve (11), is compressed to maintain the desired pressure.
  • the refrigerant fluid is delivered into the discharge chamber (8) by means of the discharge passage (10) on the valve plate (6) and the opening, closing discharge valve (12).
  • the discharge valve (12) When the discharge valve (12) opens and closes, the movement is restrained by the stopper (13) and the refrigerant fluid with the desired pressure is collected in the discharge chamber (8).
  • the discharge valve (12) is released from the stopper (13) by retracting, closing on the discharge passage (10) just as the piston (4) starts the suction stroke by retracting and the refrigerant fluid in the discharge chamber (8) is prevented from receding back into the cylinder (3).
  • the stopper (13) comprises one or more protrusions (15) that reduces the contact area of the discharge valve (12), thus providing the discharge valve (12), when opened, to only contact the ends thereof.
  • the discharge valve (12) when opened, only contacts the protrusions (15) on the stopper (13) and the adhesion force is reduced.
  • More than one cut-out (14) is formed on the surface of the stopper (13) contacting the discharge valve (12) and the protrusions (15) are arranged between the cut-outs (14) ( Figure 6 ).
  • the contact area between the discharge valve (12) and the stopper (13) is reduced by means of the cut-out (14) and/or the protrusion (15) formed on the stopper (13).
  • the adhesion force due to the oil therebetween is reduced in direct proportion.
  • the closing time of the discharge valve (12) is expedited and the compressed gas in the discharge chamber (8) is prevented from receding back into the cylinder (3) volume.
  • a significant increase in the efficiency of the compressor (1) is provided by reducing the losses incurred in the delivery of the refrigerant gas, compressed to a certain pressure value in the cylinder (3) volume, to the cylinder head (5) discharge chamber (8).

Landscapes

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

Claims (1)

  1. Un compresseur (1) comprenant un cylindre (3) pour pomper le fluide frigorigène, un piston (4) fonctionnant dans le cylindre (3), une culasse (5) assurant la circulation du fluide frigorigène aspiré et pompé par le mouvement du piston (4), une plaque de soupape (6) disposée entre le cylindre (3) et la culasse (5), une chambre d'aspiration (7) sous la culasse (5) dans laquelle le réfrigérant aspiré est recueilli, une chambre de refoulement (8) dans laquelle le fluide frigorigène pompé s'accumule, un passage d'entrée (9) et un passage de sortie (10) situés sur la plaque de soupape (6) fournissant l'entrée et la sortie du fluide frigorigène dans les chambres d'aspiration et de refoulement (7, 8) dans et depuis le cylindre (3), une soupape d'aspiration (11) située d'un côté de la plaque de soupape (6), qui ouvre et ferme le passage d'entrée (9) pendant la rotation du piston (4) fournissant le fluide réfrigérant à aspirer dans le cylindre (3) et une soupape de décharge (12) de l'autre côté de la plaque de soupape (6), qui ouvre et ferme le passage de refoulement (10) pendant le mouvement de va-et-vient du piston (4) fournissant le fluide réfrigérant à refouler du cylindre (3), et un bouchon (13) qui
    - se trouve sur la soupape de refoulement (12) au niveau de la plaque de soupape (6),
    - limitant le mouvement de la soupape de refoulement (12), permettant une légère ouverture de la soupape de refoulement (12), et
    - comprenant plus d'une découpe (14) permettant de réduire la surface de contact de la soupape de décharge (12) est caractérisée en ce que,
    - le bouchon (13) comprend en outre une ou plusieurs saillies (15) qui réduisent la surface de contact de la soupape de décharge (12), permettant à la soupape de décharge (12), quand elle est ouverte, à ne venir en contact que sur les saillies (15) qui sont disposées entre les découpes (14).
EP07728617.7A 2006-05-02 2007-04-27 Comresseur Active EP2013481B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200602129 2006-05-02
PCT/EP2007/054162 WO2007128713A1 (fr) 2006-05-02 2007-04-27 Comresseur

Publications (2)

Publication Number Publication Date
EP2013481A1 EP2013481A1 (fr) 2009-01-14
EP2013481B1 true EP2013481B1 (fr) 2019-06-12

Family

ID=38344766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07728617.7A Active EP2013481B1 (fr) 2006-05-02 2007-04-27 Comresseur

Country Status (4)

Country Link
EP (1) EP2013481B1 (fr)
CN (1) CN101432524A (fr)
BR (1) BRPI0710968A2 (fr)
WO (1) WO2007128713A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014100156A1 (fr) 2012-12-18 2014-06-26 Emerson Climate Technologies, Inc. Compresseur à mouvement de va-et-vient avec système d'injection de vapeur
CN105587598B (zh) * 2014-11-10 2019-08-13 Lg电子株式会社 往复式压缩机
NO349349B1 (en) * 2023-02-08 2025-12-15 Heaten As Piston compressor valve arrangement and method of use

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56173262U (fr) * 1980-05-24 1981-12-21
US20030095883A1 (en) * 2001-11-22 2003-05-22 Knf Neuberger Gmbh Oscillating restrictor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1915694A (en) * 1927-10-27 1933-06-27 Ira H Reindel Valve silencing construction
GB1500391A (en) * 1974-05-13 1978-02-08 Thermoking Corp Gas compressor valve arrangement with wear resistance
GB1531122A (en) * 1977-06-03 1978-11-01 Trane Co Valve plate having suction gas flow path
JPS5524276A (en) * 1978-08-11 1980-02-21 Arai Pump Mfg Co Ltd Reed valve
US4723896A (en) * 1987-04-30 1988-02-09 White Consolidated Industries, Inc. Compressor discharge valve assembly
WO1993018304A1 (fr) * 1992-03-03 1993-09-16 Matsushita Refrigeration Company Compresseur hermetique
JPH10339270A (ja) * 1997-06-05 1998-12-22 Daewoo Electron Co Ltd 圧縮機の弁結合体
JP2000087858A (ja) * 1998-09-16 2000-03-28 Matsushita Refrig Co Ltd 圧縮機用吐出弁装置
KR100494527B1 (ko) * 2002-11-06 2005-06-10 삼성광주전자 주식회사 밀폐형 압축기의 실린더 조립체

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56173262U (fr) * 1980-05-24 1981-12-21
US20030095883A1 (en) * 2001-11-22 2003-05-22 Knf Neuberger Gmbh Oscillating restrictor

Also Published As

Publication number Publication date
CN101432524A (zh) 2009-05-13
EP2013481A1 (fr) 2009-01-14
WO2007128713A1 (fr) 2007-11-15
BRPI0710968A2 (pt) 2012-02-28

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