WO2020057826A1 - A compressor comprising a suction muffler - Google Patents

A compressor comprising a suction muffler Download PDF

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Publication number
WO2020057826A1
WO2020057826A1 PCT/EP2019/070519 EP2019070519W WO2020057826A1 WO 2020057826 A1 WO2020057826 A1 WO 2020057826A1 EP 2019070519 W EP2019070519 W EP 2019070519W WO 2020057826 A1 WO2020057826 A1 WO 2020057826A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
cylinder head
heat pipe
suction
suction muffler
Prior art date
Application number
PCT/EP2019/070519
Other languages
French (fr)
Inventor
Ahmet Refik Ozdemir
Caglar SAHIN
Ilhan BALIKCI
Yunus KOSE
Original Assignee
Arcelik Anonim Sirketi
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 Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2020057826A1 publication Critical patent/WO2020057826A1/en

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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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads

Definitions

  • the present invention relates to the improvement of the efficiency of the refrigerant fluid used in the refrigeration cycle in the cooling devices, and of the mechanisms for heat transfer between the suction plenum and the cylinder head.
  • a suction muffler which provides coming of the refrigerant fluid used to provide cooling to the cylinder region without getting heated is used.
  • the suction muffler is generally disposed onto the cylinder head.
  • the refrigerant fluid coming from the evaporator is taken into the compressor via a suction pipe outside the compressor casing and then passes through the suction muffler to reach the cylinder.
  • some part of the cylinder head is in contact with the surfaces of the suction muffler that form the suction plenum.
  • the increase in the temperature of the refrigerant fluid during the compression in the cylinder causes heat transfer from the cylinder region into the casing, and in cases the cylinder is not sufficiently cooled down, the input power of the compressor increases while the performance thereof decreases.
  • the electric motor which is used for driving the crankshaft-connecting rod mechanism is disposed in the same leak-proof casing as the compressor body (cylinder-piston mechanism) and valve group.
  • the thermal energy generated due to the 75-85% efficiency of the electric motor and the losses in the bearings is released into the compressor casing and causes the refrigerant gas to heat up before entering the cylinder, thus decreasing the volumetric efficiency.
  • All types of energy generated due to the electric motor, mechanical losses and compression process are transferred from the casing to the environment upon reaching the steady state, and therefore, increasing the heat transfer to the environment as a result of improving the heat transfer mechanisms in the compressor plays an important role in the performance of the compressor.
  • Patent No. WO2007014443 (A1), it is aimed to cool down the cylinder head which reaches to high temperatures depending on the compression process during the operation of the compressor and thus to increase the performance of the compressor.
  • the evaporator end of a heat pipe is positioned so as to be aligned with the cylinder head while the condenser end thereof is immersed in the oil, and the evaporator end of a second heat pipe is immersed into the oil while the condenser end thereof is extended out of the casing.
  • a single heat pipe is used, and the evaporator end is placed onto the cylinder head while the condenser end is extended out of the casing by means of a component.
  • the main claims of the patent have taken X from the Patent No. EP0976993 A2.
  • the heat pipe is placed onto the cylinder head.
  • the heat pipe is positioned between the suction plenum and the cylinder head. Thus, the amount of heat transferred from the cylinder head to the suction plenum is decreased, and the refrigerant fluid is cooled before entering the cylinder.
  • the evaporator end of a heat pipe is positioned so as to be aligned with the cylinder while the condenser end thereof remains within the casing, and a fan is used for increasing the amount of heat transferred from the condenser region into the casing.
  • the evaporator region of the heat pipe is again situated on the cylinder and the condenser region thereof remains outside the casing.
  • the heat pipe is placed onto the cylinder head.
  • the heat pipe is positioned between the suction plenum and the cylinder head.
  • the evaporator end of the heat pipe is inserted into a hole bored on the cylinder, and the condenser end thereof extends towards the outside of the casing.
  • the evaporator region of the heat pipe is immersed into the lubricant while the condenser region is outside the casing.
  • the heat pipe is placed onto the cylinder head.
  • the heat pipe is positioned between the suction plenum and the cylinder head.
  • the aim of the present invention is to decrease the temperature at the regions close to the compressor suction line by means of the heat pipe disposed between the suction plenum and the cylinder head so as to decrease the thermodynamic losses and to increase the general performance of the compressor.
  • the compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a heat pipe disposed between the suction plenum and the cylinder head.
  • the evaporator end of the heat pipe is positioned on the muffler so as to surround the suction plenum.
  • the heat pipe one of which is in the form of a heat-receiving exchanger and the other end in the form of a heat-releasing exchanger, extends from the cylinder head towards the suction muffler.
  • Said heat pipe can be fixed snap-fittingly between the suction muffler and the cylinder head.
  • the heat pipe and the suction muffler can be produced as a single piece.
  • Figure 1 - is the view of the heat pipe and the cylinder head together.
  • Figure 2 - is the view of the heat pipe and the suction muffler together.
  • Figure 3 - is the view of the heat pipe in the compressor.
  • a suction muffler (6) which provides coming of the refrigerant fluid used to provide cooling to the cylinder region without getting heated is used.
  • the suction muffler (6) is generally disposed onto the cylinder head (1).
  • the refrigerant fluid coming from the evaporator is taken into the compressor (1) via a suction pipe outside the compressor (1) casing and then passes through the suction muffler (6) to reach the cylinder.
  • some part of the cylinder head (1) is in contact with the surfaces of the suction muffler (6) that form the suction plenum (5).
  • the high temperatures at the cylinder head (1) are decreased by means of the heat pipe (2).
  • the temperature of the cylinder head (1) is decreased and thermal insulation is provided between the cylinder head (1) and the suction plenum (5), the amount of heat passing from the cylinder head (1) to the refrigerant fluid in the suction plenum (5) is decreased.
  • the temperature of the refrigerant fluid which passes the suction muffler (6), the suction plenum (5) and the cylinder respectively, is decreased. Consequently, the volumetric efficiency of the compressor (7) is increased.
  • the average temperatures of the components and of the refrigerant fluid are decreased, in general thermodynamic losses are also reduced, thus increasing the general performance of the compressor (7).
  • the evaporator region of the heat pipe (2) is disposed between the suction plenum (5) and the cylinder head (1).
  • the evaporator end of the heat pipe (2) is positioned on the muffler (6) so as to surround the suction plenum (5).
  • the fluid in the evaporator region of the heat pipe (2) draws heat from the cylinder head (1) and the suction plenum (5) so as to change into the gas phase, and thus, the temperature of the refrigerant fluid in the suction plenum (5) decreases while the density thereof increases. Since the temperature of the cylinder head (1) is higher than that of the suction plenum (5), heat transfer occurs between the cylinder head (1) and the suction plenum (5).
  • the heat pipe (2) of the present invention prevents the heat transfer between the cylinder head (1) and the suction plenum (5).
  • the flow rate of the refrigerant fluid taken into the compressor (7) increases, which in turn increases the volumetric efficiency of the compressor (7).

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

Abstract

The present invention relates to the improvement of the efficiency of the mechanisms for heat transfer between the suction plenum (5) and the cylinder head (1) of the hermetic compressors (7) used in cooling devices and thus to increase the performance of the compressor (7) decreasing the energy consumption of the cooling device.

Description

A COMPRESSOR COMPRISING A SUCTION MUFFLER
The present invention relates to the improvement of the efficiency of the refrigerant fluid used in the refrigeration cycle in the cooling devices, and of the mechanisms for heat transfer between the suction plenum and the cylinder head.
In compressors used in the cooling cycle in cooling devices, a suction muffler which provides coming of the refrigerant fluid used to provide cooling to the cylinder region without getting heated is used. The suction muffler is generally disposed onto the cylinder head. The refrigerant fluid coming from the evaporator is taken into the compressor via a suction pipe outside the compressor casing and then passes through the suction muffler to reach the cylinder. In such applications, some part of the cylinder head is in contact with the surfaces of the suction muffler that form the suction plenum. However, the increase in the temperature of the refrigerant fluid during the compression in the cylinder causes heat transfer from the cylinder region into the casing, and in cases the cylinder is not sufficiently cooled down, the input power of the compressor increases while the performance thereof decreases.
In hermetic compressors, the electric motor which is used for driving the crankshaft-connecting rod mechanism is disposed in the same leak-proof casing as the compressor body (cylinder-piston mechanism) and valve group. The thermal energy generated due to the 75-85% efficiency of the electric motor and the losses in the bearings is released into the compressor casing and causes the refrigerant gas to heat up before entering the cylinder, thus decreasing the volumetric efficiency. All types of energy generated due to the electric motor, mechanical losses and compression process are transferred from the casing to the environment upon reaching the steady state, and therefore, increasing the heat transfer to the environment as a result of improving the heat transfer mechanisms in the compressor plays an important role in the performance of the compressor.
In the state of the art Patent No. WO2007014443 (A1), it is aimed to cool down the cylinder head which reaches to high temperatures depending on the compression process during the operation of the compressor and thus to increase the performance of the compressor. In this scope, two different embodiments are developed. In the first embodiment, the evaporator end of a heat pipe is positioned so as to be aligned with the cylinder head while the condenser end thereof is immersed in the oil, and the evaporator end of a second heat pipe is immersed into the oil while the condenser end thereof is extended out of the casing. In the second embodiment, a single heat pipe is used, and the evaporator end is placed onto the cylinder head while the condenser end is extended out of the casing by means of a component. The main claims of the patent have taken X from the Patent No. EP0976993 A2. In said patent, the heat pipe is placed onto the cylinder head. In the proposed invention, the heat pipe is positioned between the suction plenum and the cylinder head. Thus, the amount of heat transferred from the cylinder head to the suction plenum is decreased, and the refrigerant fluid is cooled before entering the cylinder.
In another state of the art embodiment, it is aimed to cool down the cylinder head which reaches to high temperatures depending on the compression process during the operation of the compressor and thus to increase the performance of the compressor. In this scope, two different embodiments are developed. In the first embodiment, the evaporator end of a heat pipe is positioned so as to be aligned with the cylinder while the condenser end thereof remains within the casing, and a fan is used for increasing the amount of heat transferred from the condenser region into the casing. In the second embodiment, the evaporator region of the heat pipe is again situated on the cylinder and the condenser region thereof remains outside the casing. In said patent the heat pipe is placed onto the cylinder head. In the proposed invention, the heat pipe is positioned between the suction plenum and the cylinder head. Thus, the amount of heat transferred from the cylinder head to the suction plenum is decreased, and the refrigerant fluid is cooled before entering the cylinder.
In another state of the art embodiment, it is aimed to cool down the cylinder head which reaches to high temperatures depending on the compression process during the operation of the compressor and thus to increase the performance of the compressor. In this scope, two different embodiments are developed. In the first embodiment, the evaporator end of the heat pipe is inserted into a hole bored on the cylinder, and the condenser end thereof extends towards the outside of the casing. In the second embodiment, the evaporator region of the heat pipe is immersed into the lubricant while the condenser region is outside the casing. In said patent the heat pipe is placed onto the cylinder head. In the proposed invention, the heat pipe is positioned between the suction plenum and the cylinder head. Thus, the amount of heat transferred from the cylinder head to the suction plenum is decreased, and the refrigerant fluid is cooled before entering the cylinder.
The aim of the present invention is to decrease the temperature at the regions close to the compressor suction line by means of the heat pipe disposed between the suction plenum and the cylinder head so as to decrease the thermodynamic losses and to increase the general performance of the compressor.
The compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a heat pipe disposed between the suction plenum and the cylinder head. The evaporator end of the heat pipe is positioned on the muffler so as to surround the suction plenum.
The heat pipe, one of which is in the form of a heat-receiving exchanger and the other end in the form of a heat-releasing exchanger, extends from the cylinder head towards the suction muffler. Said heat pipe can be fixed snap-fittingly between the suction muffler and the cylinder head.
In another embodiment of the present invention, the heat pipe and the suction muffler can be produced as a single piece.
The model embodiments related to the compressor realized in order to attain the aim of the present invention are shown in the attached figures, where:
Figure 1 - is the view of the heat pipe and the cylinder head together.
Figure 2 - is the view of the heat pipe and the suction muffler together.
Figure 3 - is the view of the heat pipe in the compressor.
The elements illustrated in the figures are numbered as follows:
  1. Cylinder head
  2. Heat pipe
  3. Evaporator end of the heat pipe
  4. Condenser end of the heat pipe
  5. Suction plenum
  6. Suction muffler
  7. Compressor
In the compressors (7), a suction muffler (6) which provides coming of the refrigerant fluid used to provide cooling to the cylinder region without getting heated is used. The suction muffler (6) is generally disposed onto the cylinder head (1). The refrigerant fluid coming from the evaporator is taken into the compressor (1) via a suction pipe outside the compressor (1) casing and then passes through the suction muffler (6) to reach the cylinder. In such applications, some part of the cylinder head (1) is in contact with the surfaces of the suction muffler (6) that form the suction plenum (5).
In this embodiment of the present invention, by means of the heat pipe (2) disposed between the suction plenum (5) and the cylinder head (1), thermal insulation is provided between these two regions. The amount of thermal energy passing to the suction plenum (5) from the cylinder head (1), which is at a higher temperature than the suction plenum (5), is decreased.
The high temperatures at the cylinder head (1) are decreased by means of the heat pipe (2). As the temperature of the cylinder head (1) is decreased and thermal insulation is provided between the cylinder head (1) and the suction plenum (5), the amount of heat passing from the cylinder head (1) to the refrigerant fluid in the suction plenum (5) is decreased. Thus, during the suction process, the temperature of the refrigerant fluid, which passes the suction muffler (6), the suction plenum (5) and the cylinder respectively, is decreased. Consequently, the volumetric efficiency of the compressor (7) is increased. As the average temperatures of the components and of the refrigerant fluid are decreased, in general thermodynamic losses are also reduced, thus increasing the general performance of the compressor (7).
The evaporator region of the heat pipe (2) is disposed between the suction plenum (5) and the cylinder head (1). The evaporator end of the heat pipe (2) is positioned on the muffler (6) so as to surround the suction plenum (5). The fluid in the evaporator region of the heat pipe (2) draws heat from the cylinder head (1) and the suction plenum (5) so as to change into the gas phase, and thus, the temperature of the refrigerant fluid in the suction plenum (5) decreases while the density thereof increases. Since the temperature of the cylinder head (1) is higher than that of the suction plenum (5), heat transfer occurs between the cylinder head (1) and the suction plenum (5). Moreover, the heat pipe (2) of the present invention prevents the heat transfer between the cylinder head (1) and the suction plenum (5). Thus, the flow rate of the refrigerant fluid taken into the compressor (7) increases, which in turn increases the volumetric efficiency of the compressor (7).

Claims (6)

  1. A compressor (7) comprising a pipe (2) used together with the cylinder head (1) and the suction muffler (6) so as to improve the efficiency of the mechanisms for heat transfer between the suction plenum (5) and the cylinder head (1) of the hermetic compressors (7) used in cooling devices and thus to increase the performance of the compressor (7) decreasing the energy consumption of the cooling device, characterized by a fixed heat pipe (2).
  2. A compressor (7) as in Claim 1, characterized by the heat pipe (2) which extends from the cylinder head (1) towards the suction muffler (6).
  3. A compressor (7) as in Claim 1, characterized by the heat pipe (2) which is disposed snap-fittingly between the suction muffler (6) and the cylinder head (1).
  4. A compressor (7) as in Claim 1, characterized by the heat pipe (2) which is vertically disposed.
  5. A compressor (7) as in Claim 1, characterized by the heat pipe (2) which is fixed onto the side wall of the suction muffler (6).
  6. A compressor (7) as in Claim 1, characterized by the heat pipe (2) which is produced as a single piece together with the suction muffler (6).
PCT/EP2019/070519 2018-09-17 2019-07-30 A compressor comprising a suction muffler WO2020057826A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201813312 2018-09-17
TRA2018/13312 2018-09-17

Publications (1)

Publication Number Publication Date
WO2020057826A1 true WO2020057826A1 (en) 2020-03-26

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PCT/EP2019/070519 WO2020057826A1 (en) 2018-09-17 2019-07-30 A compressor comprising a suction muffler

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55114384U (en) * 1979-02-05 1980-08-12
JPS59131978U (en) * 1983-02-25 1984-09-04 株式会社東芝 hermetic compressor
EP0976993A2 (en) 1998-07-27 2000-02-02 EMBRACO EUROPE S.r.l. A motor compressor for refrigerating apparatus and refrigerating apparatus including such motor compressor
JP2002048066A (en) * 2000-08-04 2002-02-15 Matsushita Refrig Co Ltd Closed compressor
WO2007014443A1 (en) 2005-08-01 2007-02-08 Whirlpool S.A. Hermetic compressor with a heat dissipation system
US20140044569A1 (en) * 2011-02-22 2014-02-13 Rodrigo Kremer Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system
WO2014086882A1 (en) * 2012-12-05 2014-06-12 Arcelik Anonim Sirketi A hermetic compressor with suction muffler
WO2016102089A1 (en) * 2014-12-25 2016-06-30 Arcelik Anonim Sirketi Hermetic compressor with heat pipe
CN108506193A (en) * 2018-03-23 2018-09-07 台州学院 A kind of air compressor machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55114384U (en) * 1979-02-05 1980-08-12
JPS59131978U (en) * 1983-02-25 1984-09-04 株式会社東芝 hermetic compressor
EP0976993A2 (en) 1998-07-27 2000-02-02 EMBRACO EUROPE S.r.l. A motor compressor for refrigerating apparatus and refrigerating apparatus including such motor compressor
JP2002048066A (en) * 2000-08-04 2002-02-15 Matsushita Refrig Co Ltd Closed compressor
WO2007014443A1 (en) 2005-08-01 2007-02-08 Whirlpool S.A. Hermetic compressor with a heat dissipation system
US20140044569A1 (en) * 2011-02-22 2014-02-13 Rodrigo Kremer Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system
WO2014086882A1 (en) * 2012-12-05 2014-06-12 Arcelik Anonim Sirketi A hermetic compressor with suction muffler
WO2016102089A1 (en) * 2014-12-25 2016-06-30 Arcelik Anonim Sirketi Hermetic compressor with heat pipe
CN108506193A (en) * 2018-03-23 2018-09-07 台州学院 A kind of air compressor machine

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