EP3250827B1 - A compressor - Google Patents

A compressor Download PDF

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Publication number
EP3250827B1
EP3250827B1 EP16701821.7A EP16701821A EP3250827B1 EP 3250827 B1 EP3250827 B1 EP 3250827B1 EP 16701821 A EP16701821 A EP 16701821A EP 3250827 B1 EP3250827 B1 EP 3250827B1
Authority
EP
European Patent Office
Prior art keywords
tube
compressor
inlet tube
insulation
casing
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
EP16701821.7A
Other languages
German (de)
French (fr)
Other versions
EP3250827A1 (en
Inventor
Ahmet Refik Ozdemir
Hasim OTUNC
Ercan KURTULDU
Fikri CAVUSOGLU
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
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Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP3250827A1 publication Critical patent/EP3250827A1/en
Application granted granted Critical
Publication of EP3250827B1 publication Critical patent/EP3250827B1/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
    • 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
    • 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
    • F04B35/045—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 using solenoids

Definitions

  • the present invention relates to a compressor with improved efficiency.
  • a suction muffler made from plastic material is used for attenuating the noise originating from the refrigerant fluid and the refrigerant fluid with low pressure and temperature coming from the evaporator is delivered to the suction muffler.
  • the refrigerant fluid sucked by the suction muffler disposed into the compressor casing is delivered to the cylinder volume and here, it is compressed by the piston and enters into the refrigeration cycle.
  • semi-direct suction method is used in order to cool the refrigerant fluid received into the cylinder volume.
  • the suction muffler inlet and the inlet tube leak-proofingly entering the casing are oppositely disposed, but not connected to each other. Since the suction muffler inlet is not directly connected to the inlet tube, the refrigerant fluid sucked into the casing enters the suction muffler with its temperature increased due to the heat inside the casing. Since the temperature of the refrigerant fluid increases, the volumetric efficiency of the compressor, hence the coefficient of performance of the compressor decreases. Moreover, the inlet tube is connected to the casing. The casing, that heats up, in turn heats the inlet tube and causes the refrigerant fluid entering through the inlet tube to heat up.
  • the compressor comprises a muffler tube that passes through an opening arranged on the casing and that opens into the inlet tube with one end connected to the opening so that a gap remains between the inlet tube and the muffler tube.
  • the suction muffler is connected to the suction pipe via an elastic connector, providing a hole to equalise pressure between the inside of the container and the suction muffler.
  • the aim of the present invention is the realization of a compressor with improved performance.
  • the compressor realized in order to attain the aim of the present invention as defined in the independent claim and the dependent claims thereof comprises an insulation tube that enables the refrigerant fluid to reach the muffler tube inside the casing without contacting the inlet tube.
  • the refrigerant fluid is transferred to the suction muffler without contacting the inlet tube, the refrigerant fluid is prevented from heating up due to the heat of the casing. Since decreasing the temperature of the refrigerant fluid in the compressor suction line increases the amount of the refrigerant fluid received into the compressor cylinder in the unit time, the volumetric efficiency and the coefficient of refrigeration performance of the compressor are increased.
  • the insulation tube extends along the inlet tube so that at least one insulation chamber remains therebetween.
  • the compressor comprises preferably two sealing members disposed between the inlet tube and the insulation tube.
  • the insulation chamber remains between the said two sealing members.
  • the sealing members are located outside the casing. The sealing members prevent the insulation tube from displacing inside the inlet tube and enables the refrigerant fluid to be received into the casing through the insulation tube.
  • the refrigerant fluid is prevented from heating up and enabled to reach the suction muffler. Since decreasing the temperature of the refrigerant fluid in the suction line increases the amount of the refrigerant fluid received into the compressor cylinder in the unit time, the volumetric efficiency of the compressor is increased.
  • the compressor (1) comprises a casing (2); a suction muffler (5) that provides the attenuation of the noise originated from the refrigerant fluid and that is disposed into the casing (2); an inlet tube (4) that carries the refrigerant fluid coming from the evaporator in the refrigeration cycle; an opening (3) that is arranged at the point where the inlet tube (4) is mounted to the casing (2) and that provides the entry of the refrigerant fluid passing through the inlet tube (4) into the casing (2), and a muffler tube (6) with one end connected to the opening and the other end opening into the suction muffler (5).
  • the compressor (1) of the present invention comprises an insulation tube (7) that is disposed into the inlet tube (4) so that at least one insulation chamber (10) remains between the inlet tube (4) and the insulation tube (7), wherein one end of the insulation tube (7) passes through the opening (3) so as to open into the muffler tube (6) ( Figure 1 ).
  • the refrigerant fluid coming from the evaporator (not shown in the figures) with low pressure and temperature passes through the insulation tube (7), that is disposed into the inlet tube (4) and that has preferably a low thermal conductivity coefficient, so as to pass into the muffler tube (6).
  • the refrigerant fluid is prevented from directly contacting the inlet tube (4), thus the mean temperature thereof is prevented from increasing.
  • the muffler tube (6) is in bellows form.
  • the insulation tube (7) extends along the inlet tube (4).
  • the compressor (1) comprises at least one sealing member (8) that is disposed between the inlet tube (4) and the insulation tube (7).
  • the sealing member (8) is preferably an O-ring.
  • two sealing members (8) are utilized.
  • at least one insulation chamber (10) remains between the insulation tube (7) and the inlet tube (4).
  • the sealing member (8) by providing leak-proofing, enables the refrigerant fluid to pass through the insulation tube and fixes the position of the insulation tube (7) in the inlet tube (4).
  • the sealing members (8) are disposed before the opening (3) outside the casing (2) ( Figure 2 ).
  • the compressor (1) comprises at least one channel (9) that is arranged on the insulation tube (7), that completely surrounds the insulation tube (7) and whereon the sealing members (8) are placed ( Figure 3 ).
  • the sealing member (8) being placed into the said channel (9), is prevented from displacing due to pressure, vibrations and other physical factors.
  • the sealing members (8) are fixed to the channel (9) by adhesion.
  • the refrigerant fluid is prevented from heating up before entering the casing (2) and enabled to enter the muffler tube (6). Since by keeping the temperature of the refrigerant fluid in the suction line low the amount of the refrigerant fluid received into the compressor cylinder in the unit time is increased, the volumetric efficiency of the compressor (1) is increased.

Description

  • The present invention relates to a compressor with improved efficiency.
  • In hermetic compressors used in cooling devices, a suction muffler made from plastic material is used for attenuating the noise originating from the refrigerant fluid and the refrigerant fluid with low pressure and temperature coming from the evaporator is delivered to the suction muffler. The refrigerant fluid sucked by the suction muffler disposed into the compressor casing is delivered to the cylinder volume and here, it is compressed by the piston and enters into the refrigeration cycle. In the state of the art, in compressors semi-direct suction method is used in order to cool the refrigerant fluid received into the cylinder volume. In this method, the suction muffler inlet and the inlet tube leak-proofingly entering the casing are oppositely disposed, but not connected to each other. Since the suction muffler inlet is not directly connected to the inlet tube, the refrigerant fluid sucked into the casing enters the suction muffler with its temperature increased due to the heat inside the casing. Since the temperature of the refrigerant fluid increases, the volumetric efficiency of the compressor, hence the coefficient of performance of the compressor decreases. Moreover, the inlet tube is connected to the casing. The casing, that heats up, in turn heats the inlet tube and causes the refrigerant fluid entering through the inlet tube to heat up.
  • In the state of the art International Patent Application No. WO2009132934 , the compressor comprises a muffler tube that passes through an opening arranged on the casing and that opens into the inlet tube with one end connected to the opening so that a gap remains between the inlet tube and the muffler tube.
  • In the state of the art European Patent Application No. EP 2 381 106 A2 , the suction muffler is connected to the suction pipe via an elastic connector, providing a hole to equalise pressure between the inside of the container and the suction muffler.
  • In the state of the art United States Patent No. US5451727 , the suction muffler inlet and a tube connection the same and the inlet tube are brought together in a chamber disposed on the casing.
  • In the state of the art United States Patent No. US4793773 , a bellows that connects the suction muffler inlet and the inlet tube is disclosed.
  • The aim of the present invention is the realization of a compressor with improved performance.
  • The compressor realized in order to attain the aim of the present invention, as defined in the independent claim and the dependent claims thereof comprises an insulation tube that enables the refrigerant fluid to reach the muffler tube inside the casing without contacting the inlet tube.
  • Thus, since the refrigerant fluid is transferred to the suction muffler without contacting the inlet tube, the refrigerant fluid is prevented from heating up due to the heat of the casing. Since decreasing the temperature of the refrigerant fluid in the compressor suction line increases the amount of the refrigerant fluid received into the compressor cylinder in the unit time, the volumetric efficiency and the coefficient of refrigeration performance of the compressor are increased.
  • In an embodiment of the present invention, the insulation tube extends along the inlet tube so that at least one insulation chamber remains therebetween.
  • In another embodiment of the present invention, the compressor comprises preferably two sealing members disposed between the inlet tube and the insulation tube. The insulation chamber remains between the said two sealing members. In this embodiment of the present invention, the sealing members are located outside the casing. The sealing members prevent the insulation tube from displacing inside the inlet tube and enables the refrigerant fluid to be received into the casing through the insulation tube.
  • By means of the present invention, by preventing the refrigerant fluid from directly contacting the inlet tube, the refrigerant fluid is prevented from heating up and enabled to reach the suction muffler. Since decreasing the temperature of the refrigerant fluid in the suction line increases the amount of the refrigerant fluid received into the compressor cylinder in the unit time, the volumetric efficiency of the compressor is increased.
  • A compressor realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
    • Figure 1 - is the view of a compressor.
    • Figure 2 - is the detailed view of an embodiment of the present invention.
    • Figure 3 - is the detailed view of another embodiment of the present invention.
  • The elements illustrated in the figures are numbered as follows:
  • The compressor (1) comprises a casing (2); a suction muffler (5) that provides the attenuation of the noise originated from the refrigerant fluid and that is disposed into the casing (2); an inlet tube (4) that carries the refrigerant fluid coming from the evaporator in the refrigeration cycle; an opening (3) that is arranged at the point where the inlet tube (4) is mounted to the casing (2) and that provides the entry of the refrigerant fluid passing through the inlet tube (4) into the casing (2), and a muffler tube (6) with one end connected to the opening and the other end opening into the suction muffler (5).
  • The compressor (1) of the present invention comprises an insulation tube (7) that is disposed into the inlet tube (4) so that at least one insulation chamber (10) remains between the inlet tube (4) and the insulation tube (7), wherein one end of the insulation tube (7) passes through the opening (3) so as to open into the muffler tube (6) (Figure 1).
  • The refrigerant fluid coming from the evaporator (not shown in the figures) with low pressure and temperature passes through the insulation tube (7), that is disposed into the inlet tube (4) and that has preferably a low thermal conductivity coefficient, so as to pass into the muffler tube (6). Thus, the refrigerant fluid is prevented from directly contacting the inlet tube (4), thus the mean temperature thereof is prevented from increasing. In this embodiment of the present invention, the muffler tube (6) is in bellows form.
  • In an embodiment of the present invention, the insulation tube (7) extends along the inlet tube (4).
  • In another embodiment of the present invention, the compressor (1) comprises at least one sealing member (8) that is disposed between the inlet tube (4) and the insulation tube (7). The sealing member (8) is preferably an O-ring. In this embodiment of the present invention, preferably two sealing members (8) are utilized. By means of the sealing members (8), at least one insulation chamber (10) remains between the insulation tube (7) and the inlet tube (4). Thus, by preventing the inlet tube (4) and the insulation tube (7) from directly contacting each other, the insulation tube (7) is prevented from heating up. Moreover, the sealing member (8), by providing leak-proofing, enables the refrigerant fluid to pass through the insulation tube and fixes the position of the insulation tube (7) in the inlet tube (4). In this embodiment of the present invention, the sealing members (8) are disposed before the opening (3) outside the casing (2) (Figure 2).
  • In another embodiment of the present invention, the compressor (1) comprises at least one channel (9) that is arranged on the insulation tube (7), that completely surrounds the insulation tube (7) and whereon the sealing members (8) are placed (Figure 3). Thus, the sealing member (8), being placed into the said channel (9), is prevented from displacing due to pressure, vibrations and other physical factors. In this embodiment of the present invention, the sealing members (8) are fixed to the channel (9) by adhesion.
  • By means of the present invention, by preventing the refrigerant fluid from contacting the inlet tube (4), the refrigerant fluid is prevented from heating up before entering the casing (2) and enabled to enter the muffler tube (6). Since by keeping the temperature of the refrigerant fluid in the suction line low the amount of the refrigerant fluid received into the compressor cylinder in the unit time is increased, the volumetric efficiency of the compressor (1) is increased.

Claims (8)

  1. A compressor (1) comprising a casing (2); a suction muffler (5) that provides the attenuation of the noise originated from the refrigerant fluid and that is disposed in the casing (2); an inlet tube (4) that carries the refrigerant fluid coming from the evaporator in the refrigeration cycle; an opening (3) that is arranged at the point where the inlet tube (4) is mounted to the casing (2) and that provides the entry of the refrigerant fluid passing through the inlet tube (4) into the casing (2), and a muffler tube (6) with one end connected to the opening and the other end opening into the suction muffler (5), characterized in that an insulation tube (7) is disposed in the inlet tube (4) so that at least one insulation chamber (10) remains between the inlet tube (4) and the insulation tube (7), wherein one end of the insulation tube (7) passes through the opening (3) so as to open into the muffler tube (6).
  2. A compressor (1) as in Claim 1, characterized in that the insulation tube (7) extends along the inlet tube (4).
  3. A compressor (1) as in Claim 1 or 2, characterized in that at least one sealing member (8) is disposed between the inlet tube (4) and the insulation tube (7).
  4. A compressor (1) as in Claim 3, characterized in that the sealing member (8) is an O-ring.
  5. A compressor (1) as in Claim 3 or 4, characterized in that the insulation chamber (10) remains between at least two sealing members (8).
  6. A compressor (3) as in any one of the Claims 3 to 5, characterized in that the sealing member (8) is disposed before the opening (3) outside the casing (2).
  7. A compressor (1) as in any one of the claims 3 to 6, characterized in that at least one channel (9) is arranged on the insulation tube (7), that completely surrounds the insulation tube (7) and whereon the sealing members (8) are placed.
  8. A compressor (1) as in Claim 7, characterized in that the sealing member (8) that is fixed to the channel (9) by adhesion.
EP16701821.7A 2015-01-30 2016-01-29 A compressor Active EP3250827B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201501096 2015-01-30
PCT/EP2016/051915 WO2016120446A1 (en) 2015-01-30 2016-01-29 A compressor

Publications (2)

Publication Number Publication Date
EP3250827A1 EP3250827A1 (en) 2017-12-06
EP3250827B1 true EP3250827B1 (en) 2019-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16701821.7A Active EP3250827B1 (en) 2015-01-30 2016-01-29 A compressor

Country Status (2)

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EP (1) EP3250827B1 (en)
WO (1) WO2016120446A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63103792A (en) 1986-10-20 1988-05-09 Kawasaki Heavy Ind Ltd Propelling device for boat
JP3318415B2 (en) 1992-12-21 2002-08-26 エルジー電子株式会社 Noise reduction device for hermetic reciprocating compressor
EP2300716B1 (en) 2008-05-01 2015-08-05 Arçelik Anonim Sirketi A compressor
KR101459163B1 (en) * 2009-01-21 2014-11-07 엘지전자 주식회사 Compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP3250827A1 (en) 2017-12-06
WO2016120446A1 (en) 2016-08-04

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