WO2021077185A1 - Système de raccordement appliqué à un compresseur hermétique - Google Patents

Système de raccordement appliqué à un compresseur hermétique Download PDF

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Publication number
WO2021077185A1
WO2021077185A1 PCT/BR2020/050426 BR2020050426W WO2021077185A1 WO 2021077185 A1 WO2021077185 A1 WO 2021077185A1 BR 2020050426 W BR2020050426 W BR 2020050426W WO 2021077185 A1 WO2021077185 A1 WO 2021077185A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
connector
connection system
fact
acoustic
Prior art date
Application number
PCT/BR2020/050426
Other languages
English (en)
Portuguese (pt)
Inventor
Sergio Koerich Lohn
Cristiano STUMPF
Rodrigo Kremer
Ivan Da Costa Pereira Filho
Rinaldo Puff
Original Assignee
Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda.
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 Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda. filed Critical Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda.
Publication of WO2021077185A1 publication Critical patent/WO2021077185A1/fr

Links

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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • 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
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections

Definitions

  • the present invention relates to a connection system applied to a hermetic compressor of the type comprising an acoustic suction filter and a suction dowel; the connection system most precisely used in the communication of refrigerant fluid between the outlet of the dowel and the intake of the suction filter; the connection system comprising at least one suction connector provided with a passage channel and an annular channel capable of creating an acoustic mode that significantly reduces the level of pulsation of suction transmitted to the cavity and the refrigerator through the line of refrigerant fluid suction.
  • hermetic compressors comprise electromechanical devices capable of compressing a refrigerant fluid by means of the successive alteration of the internal volume of a compression chamber, these equipment being mainly applied in refrigeration systems.
  • the compressor comprises an airtight housing equipped, among other elements, with a suction duct that roughly defines a duct that supplies low temperature refrigerant to the acoustic suction filter, also called suction or muffler.
  • the communication of refrigerant fluid between the suction passer and the acoustic suction filter can be direct, semi-direct or indirect.
  • Direct communication comprises the use of a connection system equipped with a connector element, preferably made of rubber.
  • semi-direct communication there is no use of any suction connector and the muffler suction dowel and gas inlet are linearly aligned.
  • indirect communication the coolant inlet from the muffler is not aligned with the suction tube.
  • the connector increases the suction pulsation that is transmitted to the refrigerator through the suction line and at the same time reduces the transmission of acoustic energy to the compressor cavity (region with refrigerant gas contained between the mechanical kit and the housing).
  • the suction connector's purpose is to direct the refrigerant fluid entirely into the muffler.
  • the equalization of the internal pressure of the muffler with the internal pressure of the cavity occurs by another element, commonly called an equalizer, which, for example, can be defined by a hole in the body of said muffler.
  • the suction duct provides coolant fluid at low temperature, however the fluid that remains inside the housing has its temperature elevated due to the contact with components heated by the normal operation of the compressor, it happens that , it is not desired that the heated fluid enter the suction filter, as it leads to a loss of thermodynamic efficiency of the compressor.
  • the suction connector also has the function of providing thermal insulation, preventing the heated fluid contained in the cavity from coming into contact with the cooler fluid coming from the refrigerator's suction line.
  • the document WQ2007015222 presents a compressor that comprises a connection structure positioned between the housing and an acoustic suction filter, this structure comprising two channels in concentric positions.
  • An annular element is positioned at the interface between the channels and defines outlets that communicate the fluid inside the housing.
  • document W02006109239 presents a compressor that comprises a connection structure equipped with a suction duct duct, an inlet duct for the acoustic suction filter and a connector, these ducts and the connector being concentric and the connector defining outputs at one of its ends.
  • the state of the art fails to provide a connection system between the suction dowel and the suction acoustic filter that is capable of: attenuating the pulsation in the suction line, providing adequate thermal insulation to the fluid from the suction duct, direct part of the fluid from the suction duct to the housing and avoid the return of heated fluid from the housing to the intake of the acoustic suction filter.
  • the present invention arises.
  • connection system with at least one suction connector which, in turn, is equipped with an annular channel, this system being applied in the communication of refrigerant fluid between the suction duct and the acoustic suction filter of an airtight compressor.
  • connection system in which the annular channel is able to create an acoustic mode that significantly reduces the level of pulsation of suction transmitted to the cavity and to the refrigerator through the line of refrigerant fluid suction.
  • connection system capable of providing adequate thermal insulation to the refrigerant fluid coming from the suction duct, preventing the heated refrigerant fluid located inside the housing from returning to the acoustic filter inlet. suction.
  • connection system capable of attenuating the pulsation in the suction line, also reducing noise from the refrigerator.
  • the objective of the present invention is to provide a connection system capable of attenuating the pulsation towards the refrigerator through the suction line and also attenuating the acoustic energy transmitted to the compressor cavity.
  • the objective of the invention is to provide a connection system that acts as an equalizer for the muffler, without the mandatory need for a hole in the muffler body for adequate equalization.
  • connection system capable of directing part of the fluid from the suction duct to the hermetic housing, also preventing the return of heated refrigerant to the intake of the acoustic suction filter .
  • connection system applied to a hermetic compressor comprising at least one acoustic suction filter and at least one suction duct; the connection system being applied in the communication of refrigerant fluid between the outlet of the suction duct and the entrance of the acoustic suction filter; the connection system comprising at least one suction connector with a conical trunk shape; the connection system in which the suction connector comprises at least one passage channel and at least one annular channel; the annular channel surrounds at least part of the passage channel; the ring channel connects the passage channel and the outside of the suction connector.
  • the present invention provides a system in which the suction connector comprises at least one internal connection element and at least one external connection element, the internal connection element and the external connection element being coupled by at least a coupling component.
  • annular channel has at least one passage opening.
  • suction connector has an accordion-shaped conical shape.
  • the present invention proposes a system in which the cross section of the annular channel defines a circular crown.
  • suction connector is coupled to at least one porous element.
  • the present invention provides a system in which the suction connector is made of flexible material.
  • Figure 1 illustrates the connection system showing the suction connector and the ring channel in side view.
  • Figure 2 illustrates the connection system showing the suction connector and the annular channel in side view.
  • Figure 3 illustrates the connection system showing the suction connector and the annular channel in perspective view.
  • Figure 4 illustrates the connection system showing the suction connector and the ring channel in front view.
  • Figure 5 illustrates the preferential flow of refrigerant through the suction connector.
  • Figure 6 illustrates the non-preferential flow of refrigerant through the suction connector.
  • Figure 7 illustrates the connection system showing the suction duct outlet and the suction acoustic filter inlet.
  • a connection system applied to a hermetic compressor comprising at least one acoustic suction filter and at least one suction duct; the connection system being applied in the communication of refrigerant fluid between the outlet of the suction duct 3 and the entrance of the acoustic suction filter 4; the connection system comprising at least one suction connector 1, preferably equipped with a trunk-conical shape; the connection system in which the suction 1 comprises at least one passageway 2 and at least one annular channel 5; the annular channel 5 of the type that surrounds at least part of the extension of the passage channel 2; the ring channel 5 connecting the passage channel 2 to the outside of the suction connector 1.
  • the outside of the suction connector is defined by the interior of the compressor housing.
  • connection system proposed here aims to provide a type of suction here called quasi-direct, through the use of a suction connector element 1. More specifically, the system proposed here aims to attenuate the pulsation in the line of suction, without allowing the mixing of fluid at low temperature from the suction duct with heated fluid inside the housing, having, consequently, excellent thermal performance and excellent acoustic performance.
  • the suction connector 1 comprises at least one passageway 2, preferably arranged on its axial axis, this passageway 2 communicates with at least one annular channel 5, so that, at the less part of the working fluid (coolant) that travels through the passage channel 2 access said ring channel 5.
  • the passage channel 2 is approximately cylindrical in shape, as can be seen in figure 1.
  • the ring channel 5 is also substantially cylindrical in shape, but its cross section defines a crown Circular.
  • the suction connector 1 comprises an external trunk-conical shape, in particular, a trunk-conical shape concertina, with the larger diameter base preferably positioned near the outlet of the suction dowel 3 and the smaller diameter base positioned near the inlet of the suction filter 4.
  • the suction connector 1 consists of three parts (three cone trunks), from its base to the apex.
  • the base of the suction connector 1 is juxtaposed to the wall of the housing, in the vicinity of the outlet of the suction duct 3; in turn, the apex of the suction connector 1 interfaces with the input of the acoustic suction filter 4.
  • the accordion-shaped conical shape of the suction connector 1 generates folding regions between the cone changes that form it.
  • the suction connector 1 can comprise a passage duct connected to its base and / or its apex.
  • the suction connector 1 comprises at least one internal connection element 1.1 and at least one external connection element 1.2, as can be seen in figure 2.
  • the suction connector 1 is formed by at least two elements positioned concentrically; preferably, both the internal connection element 1.1 and the external connection element 1.2 have bell-shaped scenic trunk shapes.
  • the internal connection element 1.1 is positioned on the compressor housing wall, close to the outlet of the suction duct 3, the external connection element 1.2 is removed from the internal wall of the compressor housing, being closer to the entrance of the suction acoustic filter 4.
  • This configuration is not limited, as these positions can be inverted, that is, in another possible embodiment, the external connection element 1.2 can be positioned on the wall of the compressor housing, in the vicinity of the outlet of the suction duct 3 and the internal connection element 1.1 may be closer to the entrance of the acoustic suction filter 4, away from the internal wall of the compressor housing.
  • connection element 1.1 and the external connection element 1.2 can define independent elements, not coupled or connected to each other. In this case, the positions of each element are only and only maintained by the fact that one of the elements is fixed to the internal wall of the compressor housing and the other element is fixed to the inlet of the acoustic suction filter 4.
  • elements 1.1 and 1.2 are coupled together by at least one coupling component 1.3, which can be defined, for example, by a connecting rod or by a region in which these elements are glued.
  • connection element 1.1 and the external connection element 1.2 do not necessarily have aligned axial axes.
  • the annular channel 5 has at least one passage opening 6, an opening that allows the passage of refrigerant fluid between the interior of the suction connector 1 and the exterior thereof.
  • the opening 6 extends around the side of the suction connector 1.
  • two or more openings 6 are provided on the side of the suction connector 1.
  • the advantages associated with the constructive proposal for the suction connector 1 of the present invention are evident.
  • the fluid coming from the outlet of the suction duct 3 preferably goes through the passage channel 2 when exiting through the outlet of the suction duct 3.
  • the suction duct outlet 3 preferably constitutes a single duct through which the fluid flows unimpeded, with reduced cargo loss.
  • part of the refrigerant fluid tends to access the annular channel 5, that is, the fluid flow is partially divided.
  • connection system proposed here allows the connection system proposed here to create an acoustic mode that significantly reduces the level of pulsation of suction transmitted to the cavity and to the refrigerator through the refrigerant fluid suction line.
  • connection system proposed here aims to prevent the heated refrigerant fluid located inside the housing from returning to the intake of the acoustic suction filter 4. This objective is achieved, since the refrigerant fluid that comes from inside the suction connector 1 and exits through the passage opening 6, in part, prevents the heated fluid from returning through this same path, thus isolating the intake of the suction filter 4.
  • the passage opening 6 it has a reduced size that helps to prevent the return of heated fluid from the housing.
  • connection system proposed here capable of attenuating the pulsation in the suction line, also reducing noise from the refrigerator; this objective is achieved with the help of the geometry, as explained here, of the suction connector 1, which has a conical accordion shape, preferably composed of three parts (three cone trunks).
  • the suction connector 1 can be composed of one or several materials, preferably flexible materials, such as rubber and / or polymers.
  • the suction connector 1 can be applied together with a porous element arranged on the base (next to the outlet of the suction past 3) or on the apex (next to the inlet of the suction filter 4).
  • This porous element is intended to assist in the creation of the acoustic mode and in the thermal insulation of the refrigerant fluid.
  • connection system proposed here fulfills the objectives for which it is proposed, being able to provide thermal and acoustic protection to the communication of refrigerant fluid inside the compressor housing.

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

Abstract

La présente invention concerne un système de raccordement de passage d'aspiration du type comprenant un filtre acoustique d'aspiration et un conduit d'aspiration; le système de raccordement étant notamment utilisé dans la communication d'un fluide frigorigène entre la sortie du conduit d'aspiration et l'entrée du filtre d'aspiration acoustique; le système de raccordement comportant au moins un raccord d'aspiration (1) possédant un canal de passage et un canal annulaire (5) apte à créer un mode acoustique qui réduit de manière significative le niveau de la pulsation d'aspiration transmise à la cavité et au réfrigérateur par l'intermédiaire de la conduite d'aspiration de fluide frigorigène.
PCT/BR2020/050426 2019-10-21 2020-10-20 Système de raccordement appliqué à un compresseur hermétique WO2021077185A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102019022089-9A BR102019022089A2 (pt) 2019-10-21 2019-10-21 sistema de conexão aplicado a compressor hermético
BRBR1020190220899 2019-10-21

Publications (1)

Publication Number Publication Date
WO2021077185A1 true WO2021077185A1 (fr) 2021-04-29

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PCT/BR2020/050426 WO2021077185A1 (fr) 2019-10-21 2020-10-20 Système de raccordement appliqué à un compresseur hermétique

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486153A (en) * 1982-04-10 1984-12-04 Danfoss A/S Refrigerator with encapsulated motor compressor
US5496156A (en) * 1994-09-22 1996-03-05 Tecumseh Products Company Suction muffler
WO2006109239A1 (fr) 2005-04-12 2006-10-19 Arcelik Anonim Sirketi Compresseur
WO2007015222A1 (fr) 2005-08-04 2007-02-08 Arcelik Anonim Sirketi Compresseur
WO2009132934A1 (fr) * 2008-05-01 2009-11-05 Arcelik Anonim Sirketi Compresseur
WO2010047543A2 (fr) * 2008-10-22 2010-04-29 엘지전자 주식회사 Silencieux d’aspiration pour compresseur hermétique
US20130266459A1 (en) * 2012-04-09 2013-10-10 Panasonic Corporation Sealed compressor
US20160222954A1 (en) * 2015-02-04 2016-08-04 Lg Electronics Inc. Reciprocating compressor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486153A (en) * 1982-04-10 1984-12-04 Danfoss A/S Refrigerator with encapsulated motor compressor
US5496156A (en) * 1994-09-22 1996-03-05 Tecumseh Products Company Suction muffler
WO2006109239A1 (fr) 2005-04-12 2006-10-19 Arcelik Anonim Sirketi Compresseur
WO2007015222A1 (fr) 2005-08-04 2007-02-08 Arcelik Anonim Sirketi Compresseur
WO2009132934A1 (fr) * 2008-05-01 2009-11-05 Arcelik Anonim Sirketi Compresseur
WO2010047543A2 (fr) * 2008-10-22 2010-04-29 엘지전자 주식회사 Silencieux d’aspiration pour compresseur hermétique
US20130266459A1 (en) * 2012-04-09 2013-10-10 Panasonic Corporation Sealed compressor
US20160222954A1 (en) * 2015-02-04 2016-08-04 Lg Electronics Inc. Reciprocating compressor

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BR102019022089A2 (pt) 2021-05-04

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