EP3974650A1 - Compresseur hermétique comportant un dispositif de retenue - Google Patents

Compresseur hermétique comportant un dispositif de retenue Download PDF

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Publication number
EP3974650A1
EP3974650A1 EP21187573.7A EP21187573A EP3974650A1 EP 3974650 A1 EP3974650 A1 EP 3974650A1 EP 21187573 A EP21187573 A EP 21187573A EP 3974650 A1 EP3974650 A1 EP 3974650A1
Authority
EP
European Patent Office
Prior art keywords
restrainer
valve
cylinder
exhaust
exhaust valve
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.)
Granted
Application number
EP21187573.7A
Other languages
German (de)
English (en)
Other versions
EP3974650B1 (fr
Inventor
Kerem KARAHAN
Ergin TASDELEN
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 EP3974650A1 publication Critical patent/EP3974650A1/fr
Application granted granted Critical
Publication of EP3974650B1 publication Critical patent/EP3974650B1/fr
Active 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0804—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B27/0821—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication
    • F04B27/0839—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication valve means, e.g. valve plate
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1009—Distribution members
    • 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
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/108—Valves characterised by the material
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means

Definitions

  • the present invention relates to a hermetic compressor, in particular to a hermetic compressor having a magnetic and a non contact restrainer.
  • a cooling appliance typically utilizes a hermetic compressor to cyclically convey the refrigerant from an evaporator to a condenser.
  • the hermetic compressor is formed by a housing, hermetically isolating the operational parts such as the rotor and the stator of the hermetic compressor from the outer environment.
  • piston makes reciprocating movement pumping and sucking the refrigerant.
  • the piston pumps the refrigerant to the exhaust chamber, the refrigerant passes through the valve plate by means of the exhaust valve that is configured to open to allow the refrigerant reach to the exhaust chamber.
  • the exhaust valve adheres to the restrainer and cannot return to its initial position as required. It is any objective of the present invention to overcome the adhesion of the exhaust valve to the restrainer.
  • EP1797324B1 A prior art publication in the technical field of the present invention may be referred to as EP1797324B1 among others, the document disclosing a hermetic compressor of which the thermodynamic efficiency is improved, comprising a valve table that facilitates the flow of the circulating fluid by enabling it to be discharged in a short time.
  • WO2017194492A1 A prior art publication in the technical field of the present invention may be referred to as WO2017194492A1 among others, the document disclosing a hermetic compressor having a closed volume that provides attenuation of the noise generated.
  • WO2017194516A1 A prior art publication in the technical field of the present invention may be referred to as WO2017194516A1 among others, the document disclosing a hermetic compressor wherein the need for using an elastomer gasket prone to deformation between the connection tube and the valve table to provide sealing is eliminated
  • An objective of the present invention is to eliminate the adhesion caused by the refrigerant between the restrainer and the exhaust valve.
  • Another objective of the present invention is to improve response time of the exhaust valve. Meaning that the exhaust valve opens and allows the refrigerant to be transferred to the exhaust chamber.
  • the method realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims comprises a hermetic compressor.
  • the hermetic compressor of the present invention comprises a housing, hermetically separating the interior volume of the hermetic compressor from the outer environment.
  • the housing houses a rotor and a stator wherein the stator is placed around the rotor so as to be concentric with the rotor.
  • the concentricity of the rotor and the stator lies along a rotation axis.
  • the hermetic compressor further comprises a cylinder that is used for refrigerant to be sucked and pumped. Said movement is provided by means of a piston that is inside the cylinder.
  • the hermetic compressor further comprises a body wherein the body supports the piston and the cylinder.
  • a cylinder head is provided so as to guide the refrigerant to be sucked and pumped into the cylinder.
  • the hermetic compressor further comprises an exhaust chamber which is disposed on the cylinder head wherein the refrigerant is accumulated during the pump movement of the piston.
  • a valve plate is placed in between the cylinder and the cylinder head and an exhaust port is arranged on the valve plate.
  • the exhaust port is configured to enable the refrigerant to pass from the cylinder to the exhaust chamber during the compression movement of the piston.
  • An exhaust valve is provided on the valve table wherein the exhaust valve is configured to open the exhaust port upon compression movement of the piston thereby releasing a certain amount of refrigerant into the exhaust chamber. The movement of the exhaust valve is limited by means of a restrainer placed on the valve table.
  • the restrainer is configured to extend at least partially into the exhaust chamber.
  • the restrainer and the exhaust valve is produced from a ferromagnetic material.
  • the hermetic compressor of the present invention further comprises a seal placed in between the exhaust valve and the restrainer so as to electrically insulate the said parts from each other.
  • the hermetic compressor of the present invention further comprises a circuit that is used to provide an electrical current to the restrainer, inducing ferromagnetism on the restrainer. Only the restrainer is electrified which helps create a permanent magnet from the restrainer. This creates a magnetic attraction between the restrainer and the exhaust valve, thereby creating an attraction between the restrainer and the exhaust valve. This magnetic attraction helps the exhaust valve overcome the adhesion created due to the lubricant in between the exhaust valve and the valve plate. As a result of this, operational efficiency of the hermetic compressor is improved.
  • the circuit is configured to provide a varying current to the restrainer which helps overcome lower operation efficiency caused by the adhesion of the exhaust valve after a long time of use.
  • the lubricant used for lubrication of the operational parts of the hermetic compressor may tend to get denser after a long time of period, mainly due to particles accumulating.
  • the circuit is configured to provide a higher current to the restrainer, thereby eliminating the negative effects of the lubricant in the long run. Additionally, the circuit can provide a varying current as a response to the cooling needs of the appliance wherein the hermetic compressor operates.
  • the hermetic compressor comprises a fastening means that is used to fix the restrainer and the exhaust valve onto the valve plate.
  • the fastening means is produced from a dielectric material; therefore, it does not conduct the current from the exhaust valve to the valve plate.
  • the fastening means is a rivet.
  • the circuit comprises an electric motor, an electrical switch, a data logger, a laser encoder and a crank eccentric trunnion.
  • An advantageous effect provided by means of the present invention is that the restrainer is polarized which in turn creates a magnetic field between the restrainer and the exhaust valve, thereby eliminating the possibility of adhesion between the exhaust valve and the restrainer.
  • An advantageous effect provided by means of the present invention is that the current provided by means of the circuit can be varied according to the position of the crank eccentric trunnion and therefore that of the exhaust valve which in turn increases responsiveness of the exhaust valve. This helps eliminate the adhesion between the exhaust valve and the valve plate. Also this helps increase the energy efficiency of the hermetic compressor.
  • the present invention relates to a hermetic compressor (1) comprising; a housing (2), a cylinder (3) inside the housing (2) and that enables the refrigerant to be sucked and pumped; a piston (4) that is operated in the cylinder (3); a body that supports the cylinder (3) and the piston (4); a cylinder head (5) that enables the refrigerant sucked and pumped by the movement of the piston (4) into the cylinder (3) to be guided; an exhaust chamber (6) that is disposed in the cylinder head (5) wherein the refrigerant fluid pumped during the compression movement of the piston (4) is accumulated; a valve table (7) placed between the cylinder (3) and the cylinder head (5);
  • the present invention further comprises; a seal (11) produced from a dielectric material and placed between the exhaust valve (9) and the restrainer (10) such that the seal (11) is configured to electrically insulate the restrainer (10) and the exhaust valve (9) from each other and a circuit (12) configured to provide electrical current to the restrainer (11), inducing ferromagnetism.
  • the seal (11) can be produced in two different methods. In the first method, the seal (11) is produced from a plate that is a dielectric material and is placed between the restrainer (10) and the exhaust valve (9). In another method, the seal (11) is produced as a coating and is used to coat one of the surfaces of the restrainer (10) or the exhaust valve (9) facing each other.
  • the seal (11) is configured to electrically insulate the restrainer (10) and the exhaust valve (9) from each other.
  • the electricity cannot pass from the restrainer (10) to the exhaust valve (9).
  • the circuit (12) is configured to provide electricity to the restrainer (10).
  • the restrainer (10) is electrified and creates a magnetic field. Due to the magnetic field, the restrainer (10) magnetically influences the exhaust valve (9) which in turn will also be polarized. The sign of the polarizations of the exhaust valve (9) and that of the restrainer (10) are opposite, therefore creating a magnetic attraction between the two.
  • the exhaust valve (9) is opened efficiently, eliminating the possibility of the exhaust valve (9) being adhered to the valve table (7) because of the lubricant oil.
  • the present invention relates to a hermetic compressor (1) wherein the circuit (12) is configured to provide varying current wherein the variation depends on the angle between the valve table (7) and the exhaust valve (9).
  • the angle of opening of the exhaust valve (9) with respect to the valve table (7) is predetermined by the manufacturer. The angle can change between a maximum angle and zero angle.
  • the time interval wherein the exhaust valve (9) remains open is calculated and entered into the control card of the hermetic compressor (1). Therefore, the control unit knows the angle of the opening at a certain time interval.
  • the control unit is in communication with the circuit (12) and is configured to vary the current. As a result of which, a better and a more efficient hermetic compressor (1) control is achieved.
  • the present invention relates to a hermetic compressor (1) further comprising a fastening means (13) produced from a dielectric material via which the restrainer (10) and the exhaust valve (9) are fixed onto the valve table (7).
  • the fastening means (13) is used to attach the restrainer (10) and the exhaust valve (9) onto the valve table (7).
  • the present invention relates to a hermetic compressor (1) wherein the fastening means (13) is a rivet.
  • the rivets are an economical solution to fasten items onto other items.
  • the present invention relates to a hermetic compressor (1) wherein the circuit (12) comprises an electric motor (14), an electrical switch (15), a data logger (16), a laser encoder (17) and a crank eccentric trunnion (18).
  • the electrical motor (14) produces the electrical current that is used to polarize the restrainer (10).
  • the electrical switch turns on and off the circuit (12).
  • the data logger saves and reformates the data provided by means of the laser encoder (17).
  • the laser encoder (17) is the device that detects displacements of the crank eccentric trunnion (18) with laser and sends this signal to the data logger (16) which in turn processes the data.
  • the laser encoder (17) detects displacements of the crank eccentric trunnion (18) and therefore the movement of the exhaust valve (9) is measured with accuracy. During the movement of the crank eccentric trunnion (18), the laser encoder (17) detects the position of the crank eccentric trunnion (18) and therefore that of the exhaust valve (9).
  • the magnetic attraction originating from the polarization of the restrainer (10) by the circuit (12) is used for counter act the negative effects of lubricants adhesive effect between the valve table (7) and the exhaust valve (9).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressor (AREA)
EP21187573.7A 2020-09-29 2021-07-25 Compresseur hermétique comportant un dispositif de retenue Active EP3974650B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2020/15443A TR202015443A2 (tr) 2020-09-29 2020-09-29 Kisitlayici i̇çeren hermeti̇k kompresör

Publications (2)

Publication Number Publication Date
EP3974650A1 true EP3974650A1 (fr) 2022-03-30
EP3974650B1 EP3974650B1 (fr) 2024-02-07

Family

ID=77050867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21187573.7A Active EP3974650B1 (fr) 2020-09-29 2021-07-25 Compresseur hermétique comportant un dispositif de retenue

Country Status (3)

Country Link
EP (1) EP3974650B1 (fr)
PL (1) PL3974650T3 (fr)
TR (1) TR202015443A2 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369005U (fr) * 1976-11-11 1978-06-09
JPS5396203U (fr) * 1977-01-07 1978-08-04
JP2000097163A (ja) * 1998-09-22 2000-04-04 Toyota Autom Loom Works Ltd ピストン型流体機械における吐出弁構造
KR20080033745A (ko) * 2006-10-13 2008-04-17 삼성광주전자 주식회사 밀폐형 압축기
EP2798214A1 (fr) * 2011-12-26 2014-11-05 Whirlpool S.A. Système de soupape semi-commandée appliqué à un compresseur et procédé de modulation de la capacité d'un compresseur doté d'un système de soupape semi-commandée
EP1797324B1 (fr) 2004-10-04 2016-11-16 Arçelik Anonim Sirketi Compresseur
WO2017194492A1 (fr) 2016-05-09 2017-11-16 Arcelik Anonim Sirketi Compresseur hermétique à niveau de bruit réduit
WO2017194516A1 (fr) 2016-05-10 2017-11-16 Arcelik Anonim Sirketi Compresseur hermétique à étanchéité améliorée

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369005U (fr) * 1976-11-11 1978-06-09
JPS5396203U (fr) * 1977-01-07 1978-08-04
JP2000097163A (ja) * 1998-09-22 2000-04-04 Toyota Autom Loom Works Ltd ピストン型流体機械における吐出弁構造
EP1797324B1 (fr) 2004-10-04 2016-11-16 Arçelik Anonim Sirketi Compresseur
KR20080033745A (ko) * 2006-10-13 2008-04-17 삼성광주전자 주식회사 밀폐형 압축기
EP2798214A1 (fr) * 2011-12-26 2014-11-05 Whirlpool S.A. Système de soupape semi-commandée appliqué à un compresseur et procédé de modulation de la capacité d'un compresseur doté d'un système de soupape semi-commandée
WO2017194492A1 (fr) 2016-05-09 2017-11-16 Arcelik Anonim Sirketi Compresseur hermétique à niveau de bruit réduit
WO2017194516A1 (fr) 2016-05-10 2017-11-16 Arcelik Anonim Sirketi Compresseur hermétique à étanchéité améliorée

Also Published As

Publication number Publication date
PL3974650T3 (pl) 2024-07-01
TR202015443A2 (tr) 2022-04-21
EP3974650B1 (fr) 2024-02-07

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