EP3055628A1 - A cooling device comprising a flow regulator - Google Patents

A cooling device comprising a flow regulator

Info

Publication number
EP3055628A1
EP3055628A1 EP14821892.8A EP14821892A EP3055628A1 EP 3055628 A1 EP3055628 A1 EP 3055628A1 EP 14821892 A EP14821892 A EP 14821892A EP 3055628 A1 EP3055628 A1 EP 3055628A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
flow regulator
cooling device
refrigerant
condenser
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
EP14821892.8A
Other languages
German (de)
French (fr)
Other versions
EP3055628B1 (en
Inventor
Caner SIMSEK
Aleks KUYUMCUOGLU
Ozgun SAKALLI
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 EP3055628A1 publication Critical patent/EP3055628A1/en
Application granted granted Critical
Publication of EP3055628B1 publication Critical patent/EP3055628B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/13—Vibrations

Definitions

  • the present invention relates to a cooling device comprising a flow regulator which reduces the noise originating from the fluid during the refrigeration cycle.
  • capillary pipes are used in order to lower the pressure of the fluid.
  • the fluid the pressure of which is decreased by means of the capillary pipes, flows at a high speed at the capillary pipe outlet and is generally two-phase.
  • the fluid converts to the gas phase at the evaporator outlet.
  • the fluid that is two-phase or in the gas phase and that tends to have hydrodynamic instability causes the generation of noise.
  • noise is generated due to the vibration and turbulence originating from the sudden pressure difference during the transfer of the fluid from the capillary pipes with narrow cross-sectional area to the pipes having wider cross-sectional area.
  • utilization of porous flow regulators is known in order to decrease the said disturbing sound level which can be generally heard from the outside.
  • the aim of the present invention is the realization of a cooling device comprising a flow regulator that reduces the noise originating from the fluid.
  • the cooling device realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a compressor that enables the refrigeration cycle to be performed, a condenser that transfers thermal energy to the outside environment, an evaporator that draws the thermal energy in the environment being cooled, a capillary pipe that is disposed between the condenser and the evaporator and that enables the refrigerant at the outlet of the condenser to be delivered to the evaporator by expanding, and a return pipe that extends from the evaporator to the compressor.
  • the cooling device of the present invention comprises an at least partially flexible flow regulator that carries the refrigerant, that is situated among the pipes between the evaporator and the condenser, that decreases the noise by absorbing the vibrations originating from the pressure differences in the fluid, that has a corrugated shape differentiating from one end to the other end and wherein the circulation of the refrigerant is realized.
  • the flow rate of the refrigerant is decreased and the fluid is prevented from generating noise by hitting the walls of the flow regulator.
  • one end of the flow regulator opens to the evaporator inlet and the other end thereof to the capillary pipe.
  • the flow regulator By means of the flow regulator, the acoustic energy of the refrigerant received from the capillary pipe is decreased before the refrigerant enters the evaporator. Thus, vibration-induced noise formation on the evaporator is prevented.
  • the shape of the flow regulator is frustoconical, accordion and cylindrical respectively in the flow direction of the refrigerant. That the flow regulator is composed of different geometrical shapes arranged successively enables the physical characteristics of the refrigerant to change in a slow and stable manner along the flow regulator. Thus, the refrigerant flows in a more stable manner and noise originating from the flow of the refrigerant is decreased.
  • the flow regulator is situated at the outlet of the evaporator. Since the bubbles in the refrigerant contact the return pipe walls and burst while the refrigerant leaving the evaporator in gas phase moves towards the compressor, noise and vibration increase especially at the evaporator outlet.
  • the flow regulator damps the increasing vibration thanks to its flexible configuration and geometry.
  • the portion of the flow regulator close to the evaporator outlet is frustoconical and the portion thereof close to the compressor is cylindrical.
  • the accordion portion of the flow regulator is produced from elastomeric material. Thanks to its flexible structure, the flow regulator reduces the vibration-induced noise by damping the vibrations caused by the high pressure fluid.
  • Figure 1 - is the schematic view of the refrigerant circulation line of a cooling device.
  • FIG. 2 - is the sideways view of a flow regulator.
  • the elements illustrated in the figures are numbered as follows:
  • the cooling device (1) comprises a compressor (2) enabling the refrigeration cycle to be performed, a condenser (3) that transfers thermal energy to the outside environment, an evaporator (4) that draws thermal energy from the environment being cooled, at least one capillary pipe (5) that is disposed between the condenser (3) and the evaporator (4) and that enables the refrigerant to be delivered to the evaporator (4) by expanding at the outlet of the condenser (3), and a return pipe
  • the cooling device (1) of the present invention comprises a flexible flow regulator
  • the flow regulator (7) is situated between the capillary pipe (5) and the evaporator (4) inlet.
  • the fluid the pressure of which is decreased by means of the capillary pipe (5), flows at a high speed at the capillary pipe (5) outlet and is generally two-phase.
  • the acoustic energy of the fluid coming from the capillary pipe (5) and having a reduced speed after passing through the flow regulator (7) is decreased at the evaporator (4) inlet.
  • noise generation is prevented. Vibrations generated on the capillary pipe (5) are damped before reaching the evaporator (4), thus the formation of vibration-induced noise on the evaporator (4) is prevented.
  • the flow regulator (7) is situated between the evaporator (4) outlet and the return pipe (6). Noise and vibrations increase between the evaporator (4) and the return pipe (6) wherein the fluid is in gas phase. Thanks to its geometry, the flow regulator (7) prevents fluid from creating vortices in the return pipe (6).
  • the end of the flow regulator (7) connected to the capillary pipe (5) is frustoconical (F) and the end thereof connected to the evaporator (4) inlet is cylindrical (S).
  • F frustoconical
  • S cylindrical
  • the fluid that leaves the capillary pipe (5) with increased speed slows down while moving forward inside the flow regulator (7).
  • A accordion
  • the refrigerant flows over the walls of the flow regulator (7) by zigzagging after its flow rate is reduced.
  • the fluid passes through the cylindrical (S) portion and enters the evaporator (4).
  • the end of the flow regulator (7) connected to the evaporator (4) outlet is frustoconical (F) and the end thereof connected to the return pipe (6) is cylindrical (S).
  • the accordion (A) portion of the flow regulator (7) is produced from elastomeric material. Thanks to its flexible structure, the flow regulator (7) damps the vibrations caused by the acoustic energy of the fluid and prevents formation of noise.
  • the frustoconical (F) and/or cylindrical (S) portions of the flow regulator (7) are produced from metal.
  • the flow regulator (7) can be connected to the evaporator (4) inlet by welding. Connecting the simple structured pipes with welding provides savings in material costs.
  • the frustoconical (F) and/or cylindrical (S) portions of the flow regulator (7) are produced from plastic.
  • the pressure of the fluid is reduced thanks to the at least partially flexible flow regulator (7) with a geometry changing from one end to the other end.
  • the cavitation and vibration noise originating from the pressure change occurring during the fluid transfer between the pipes with different diameters is effectively dampened. Consequently, generation of noise originating from flow and/or physical characteristics of the fluid is prevented and the cooling device (1) is enabled to operate more silently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The present invention relates to a cooling device (1) comprising a compressor (2) enabling the refrigeration cycle to be performed, a condenser (3) that transfers thermal energy to the outside environment, an evaporator (4) that draws thermal energy from the environment being cooled, and at least one capillary pipe (5) that is disposed between the condenser (3) and the evaporator (4) and that enables the refrigerant to be delivered to the evaporator (4) by expanding at the condenser (3) outlet, and wherein the noise originating from the refrigerant is prevented.

Description

A COOLING DEVICE COMPRISING A FLOW REGULATOR
The present invention relates to a cooling device comprising a flow regulator which reduces the noise originating from the fluid during the refrigeration cycle.
In the refrigeration circuits of cooling devices, capillary pipes are used in order to lower the pressure of the fluid. The fluid, the pressure of which is decreased by means of the capillary pipes, flows at a high speed at the capillary pipe outlet and is generally two-phase. The fluid converts to the gas phase at the evaporator outlet. The fluid that is two-phase or in the gas phase and that tends to have hydrodynamic instability causes the generation of noise. Moreover, noise is generated due to the vibration and turbulence originating from the sudden pressure difference during the transfer of the fluid from the capillary pipes with narrow cross-sectional area to the pipes having wider cross-sectional area. In the state of the art, utilization of porous flow regulators is known in order to decrease the said disturbing sound level which can be generally heard from the outside. In the state of the art European Patent Application No. EP0943879, it is described that the porous flow regulator that provides reduction in the noise originating from the refrigerant fluid is fixed between the capillary pipe and the pipe wherein at least some part of the capillary pipe is located.
The aim of the present invention is the realization of a cooling device comprising a flow regulator that reduces the noise originating from the fluid.
The cooling device realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a compressor that enables the refrigeration cycle to be performed, a condenser that transfers thermal energy to the outside environment, an evaporator that draws the thermal energy in the environment being cooled, a capillary pipe that is disposed between the condenser and the evaporator and that enables the refrigerant at the outlet of the condenser to be delivered to the evaporator by expanding, and a return pipe that extends from the evaporator to the compressor. The cooling device of the present invention comprises an at least partially flexible flow regulator that carries the refrigerant, that is situated among the pipes between the evaporator and the condenser, that decreases the noise by absorbing the vibrations originating from the pressure differences in the fluid, that has a corrugated shape differentiating from one end to the other end and wherein the circulation of the refrigerant is realized. By means of the corrugated surface of the flow regulator, the flow rate of the refrigerant is decreased and the fluid is prevented from generating noise by hitting the walls of the flow regulator.
In an embodiment of the present invention, one end of the flow regulator opens to the evaporator inlet and the other end thereof to the capillary pipe. By means of the flow regulator, the acoustic energy of the refrigerant received from the capillary pipe is decreased before the refrigerant enters the evaporator. Thus, vibration-induced noise formation on the evaporator is prevented.
In a derivative of this embodiment, the shape of the flow regulator is frustoconical, accordion and cylindrical respectively in the flow direction of the refrigerant. That the flow regulator is composed of different geometrical shapes arranged successively enables the physical characteristics of the refrigerant to change in a slow and stable manner along the flow regulator. Thus, the refrigerant flows in a more stable manner and noise originating from the flow of the refrigerant is decreased.
In an embodiment of the present invention, the flow regulator is situated at the outlet of the evaporator. Since the bubbles in the refrigerant contact the return pipe walls and burst while the refrigerant leaving the evaporator in gas phase moves towards the compressor, noise and vibration increase especially at the evaporator outlet. The flow regulator damps the increasing vibration thanks to its flexible configuration and geometry.
In an embodiment of the present invention, the portion of the flow regulator close to the evaporator outlet is frustoconical and the portion thereof close to the compressor is cylindrical. In an embodiment of the present invention, the accordion portion of the flow regulator is produced from elastomeric material. Thanks to its flexible structure, the flow regulator reduces the vibration-induced noise by damping the vibrations caused by the high pressure fluid. The cooling device realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
Figure 1 - is the schematic view of the refrigerant circulation line of a cooling device.
Figure 2 - is the sideways view of a flow regulator. The elements illustrated in the figures are numbered as follows:
1- Cooling device
2- Compressor
3- Condenser
4- Evaporator 5- Capillary pipe
6- Return pipe
7- Flow regulator
The cooling device (1) comprises a compressor (2) enabling the refrigeration cycle to be performed, a condenser (3) that transfers thermal energy to the outside environment, an evaporator (4) that draws thermal energy from the environment being cooled, at least one capillary pipe (5) that is disposed between the condenser (3) and the evaporator (4) and that enables the refrigerant to be delivered to the evaporator (4) by expanding at the outlet of the condenser (3), and a return pipe
(6) that is disposed between the evaporator (4) and the compressor (2) and that carries the refrigerant in gas phase to the compressor (2).
The cooling device (1) of the present invention comprises a flexible flow regulator
(7) with at least some portion in accordion (A) form, that is disposed on the refrigerant circulation line between the evaporator (4) and the condenser (3) and that prevents the noise originating from the fluid. By means of the accordion (A) form of the flow regulator (7), the fluid slows down while passing through the flow regulator (7). Thus, the physical characteristics of the fluid change in a stable manner and the pressure of the fluid is prevented from changing abruptly. Moreover, vibrations generated on the refrigerant circulation line are prevented from generating noise by stimulating the evaporator (4).
In an embodiment of the present invention, the flow regulator (7) is situated between the capillary pipe (5) and the evaporator (4) inlet. The fluid, the pressure of which is decreased by means of the capillary pipe (5), flows at a high speed at the capillary pipe (5) outlet and is generally two-phase. The acoustic energy of the fluid coming from the capillary pipe (5) and having a reduced speed after passing through the flow regulator (7) is decreased at the evaporator (4) inlet. Thus, noise generation is prevented. Vibrations generated on the capillary pipe (5) are damped before reaching the evaporator (4), thus the formation of vibration-induced noise on the evaporator (4) is prevented.
In an embodiment of the present invention, the flow regulator (7) is situated between the evaporator (4) outlet and the return pipe (6). Noise and vibrations increase between the evaporator (4) and the return pipe (6) wherein the fluid is in gas phase. Thanks to its geometry, the flow regulator (7) prevents fluid from creating vortices in the return pipe (6).
In an embodiment of the present invention, the end of the flow regulator (7) connected to the capillary pipe (5) is frustoconical (F) and the end thereof connected to the evaporator (4) inlet is cylindrical (S). By means of the frustoconical (F) form of the flow regulator (7), the fluid that leaves the capillary pipe (5) with increased speed, slows down while moving forward inside the flow regulator (7). By means of the accordion (A) form of the flow regulator (7), the refrigerant flows over the walls of the flow regulator (7) by zigzagging after its flow rate is reduced. The fluid passes through the cylindrical (S) portion and enters the evaporator (4). Thus, noise is prevented from originating due to the pressure change occurring during the fluid transfer between the pipes with different diameters. Thanks to the frustoconical (F), accordion (A) and cylindrical (S) forms of the flow regulator (7) arranged respectively, vibrations with different wavelengths are damped. The acoustic energy of the refrigerant is reduced by making the flow thereof stable.
In an embodiment of the present invention, the end of the flow regulator (7) connected to the evaporator (4) outlet is frustoconical (F) and the end thereof connected to the return pipe (6) is cylindrical (S).
In an embodiment of the present invention, the accordion (A) portion of the flow regulator (7) is produced from elastomeric material. Thanks to its flexible structure, the flow regulator (7) damps the vibrations caused by the acoustic energy of the fluid and prevents formation of noise.
In an embodiment of the present invention, the frustoconical (F) and/or cylindrical (S) portions of the flow regulator (7) are produced from metal. Thus, the flow regulator (7) can be connected to the evaporator (4) inlet by welding. Connecting the simple structured pipes with welding provides savings in material costs.
In an embodiment of the present invention, the frustoconical (F) and/or cylindrical (S) portions of the flow regulator (7) are produced from plastic.
By means of the present invention, the pressure of the fluid is reduced thanks to the at least partially flexible flow regulator (7) with a geometry changing from one end to the other end. The cavitation and vibration noise originating from the pressure change occurring during the fluid transfer between the pipes with different diameters is effectively dampened. Consequently, generation of noise originating from flow and/or physical characteristics of the fluid is prevented and the cooling device (1) is enabled to operate more silently.

Claims

1. A cooling device (1) comprising a compressor (2) enabling the refrigeration cycle to be performed, a condenser (3) that transfers thermal energy to the outside environment, an evaporator (4) that draws thermal energy from the environment being cooled, a capillary pipe (5) that is disposed between the condenser (3) and the evaporator (4) and that enables the refrigerant to be delivered to the evaporator (4) by expanding at the outlet of the condenser (3), and a return pipe (6) that is disposed between the evaporator (4) and the compressor (2) and that carries the refrigerant in gas phase from evaporator (4) to the compressor (2), characterized by a flexible flow regulator (7) with at least some portion in accordion (A) form, that is disposed on the refrigerant circulation line between the evaporator (4) and the condenser (3) and that prevents the noise originating from the fluid.
2. A cooling device (1) as in Claim 1, characterized by the flow regulator (7) that is disposed between the capillary pipe (5) and the evaporator (4) inlet.
3. A cooling device (1) as in Claim 1 or 2, characterized by the flow regulator (7) that is disposed between the evaporator (4) outlet and the return pipe (6).
4. A cooling device (1) as in Claim 2, characterized by the flow regulator (7) with its end connected to the capillary pipe (5) being frustoconical (F) and the end thereof connected to the evaporator (4) inlet being cylindrical (S).
5. A cooling device (1) as in Claim 3, characterized by the flow regulator (7) with its end connected to the evaporator (4) outlet being frustoconical (F) and the end thereof connected to the return pipe (6) being cylindrical (S).
6. A cooling device (1) as in any one of the above claims, characterized by the flow regulator (7), the accordion (A) portion of which is produced from elastomeric material.
7. A cooling device (1) as in any one of the above claims, characterized by the flow regulator (7), the frustoconical (F) and/or cylindrical (S) portions of which are produced from metal.
EP14821892.8A 2013-10-03 2014-10-01 A cooling device comprising a flow regulator Active EP3055628B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201311631 2013-10-03
PCT/TR2014/000352 WO2015050514A1 (en) 2013-10-03 2014-10-01 A cooling device comprising a flow regulator

Publications (2)

Publication Number Publication Date
EP3055628A1 true EP3055628A1 (en) 2016-08-17
EP3055628B1 EP3055628B1 (en) 2022-12-07

Family

ID=52278720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14821892.8A Active EP3055628B1 (en) 2013-10-03 2014-10-01 A cooling device comprising a flow regulator

Country Status (3)

Country Link
EP (1) EP3055628B1 (en)
PL (1) PL3055628T3 (en)
WO (1) WO2015050514A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107816815A (en) * 2016-09-13 2018-03-20 饶秋金 Apparatus for cold air circulation
CN112097011B (en) * 2020-11-17 2021-03-19 北京航空航天大学 Pipeline management device and two-dimensional pointing low-temperature loop heat pipe system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT243877Y1 (en) 1998-03-20 2002-03-06 Whirlpool Co REFRIGERANT FLOW FLUID OPTIMIZER DEVICE SENT TO A REFRIGERATION CIRCUIT EVAPORATOR AND AGENT AS
JP2000205595A (en) * 1999-01-18 2000-07-25 Matsushita Electric Ind Co Ltd Air-conditioner
KR200385594Y1 (en) * 2005-03-21 2005-05-31 웅진코웨이주식회사 A refrigeration apparatus for water purifier having reduced noise from its evaporator
JP4814813B2 (en) * 2007-02-21 2011-11-16 ヤンマー株式会社 Air conditioner

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015050514A1 *

Also Published As

Publication number Publication date
EP3055628B1 (en) 2022-12-07
WO2015050514A1 (en) 2015-04-09
PL3055628T3 (en) 2023-05-08

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