WO2021077186A1 - 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
WO2021077186A1
WO2021077186A1 PCT/BR2020/050427 BR2020050427W WO2021077186A1 WO 2021077186 A1 WO2021077186 A1 WO 2021077186A1 BR 2020050427 W BR2020050427 W BR 2020050427W WO 2021077186 A1 WO2021077186 A1 WO 2021077186A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
connector
connection system
transition region
suction connector
Prior art date
Application number
PCT/BR2020/050427
Other languages
English (en)
Portuguese (pt)
Inventor
Rinaldo Puff
Rodrigo Kremer
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 WO2021077186A1 publication Critical patent/WO2021077186A1/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
    • F04B39/06—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
    • F04B39/123—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 a transition region 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 refrigerant suction system.
  • hermetic compressors comprise electromechanical devices capable of compressing a refrigerant fluid by means of successive alteration of the internal volume of a compressor 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 system connector 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 JP2009079516 presents a compressor that comprises a duct suction unit with concentric channels so that part of the fluid is directed to the silencer and part of the fluid to the interior of the housing.
  • this document proposes the application of concentric channels, with the external channel allowing gases to escape into the housing, however there is no application of a suction connector between the outlet of the suction duct and the entrance of the suction filter, it can be seen that this proposal is not able to provide adequate thermal insulation to the refrigerant fluid coming from the suction duct, allowing the heated refrigerant fluid located inside the housing to return to the entrance of the acoustic suction filter.
  • the document KR20110098494 presents a compressor with connecting ducts with at least one orifice, this orifice being provided to prevent the return of fluid through the ducts.
  • this document proposes a connector element that allows the radial outlet of fluid (through an orifice), however this proposal does not present a suction connector with a geometric configuration capable of creating an acoustic mode that significantly reduces the level of suction pulsation transmitted to the housing cavity and to the refrigerator through the refrigerant suction line.
  • the state of the art fails to provide a connection system between the suction dowel and the acoustic suction 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 prevent the return of heated fluid from the housing to the intake of the acoustic suction filter.
  • a connection system between the suction dowel and the acoustic suction 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 prevent the return of heated fluid from the housing to the intake of the acoustic suction filter.
  • connection system with at least one suction connector which, in turn, is equipped with a transition region, this system being applied in the communication of refrigerant fluid between the suction and the acoustic suction filter of a hermetic compressor.
  • connection system in which the transition region is able to create an acoustic mode that significantly reduces the level of suction pulsation transmitted to the cavity and to the refrigerator through the line refrigerant suction system.
  • 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 mandatory need for a hole in the muffler body for proper 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; the system comprising at least one acoustic suction filter and at least one suction duct; the connection system applied to the refrigerant fluid communication between the suction duct outlet and the acoustic suction filter inlet; the connection system comprising at least one suction connector comprising a trunk-conical shape; the connection system in which the suction connector comprises at least one passage channel and a transition region; the suction connector comprising a spiral-shaped cross section; the transition region connecting the passage channel and the exterior of the suction connector.
  • the present invention provides for a system in which the transition region has at least one passage opening.
  • transition region has a cross section in the shape of a crown sector.
  • suction connector has an accordion-shaped conical shape.
  • cross section of the passage channel defines a circular sector.
  • the present invention proposes a system in which it comprises at least one porous element.
  • the present invention provides a system in which the suction connector is made of flexible material.
  • Figure 1 illustrates a perspective view of the suction connector, highlighting the transition region.
  • Figure 2 shows a front view of the suction connector, highlighting the passage opening.
  • Figure 3 illustrates a sectional view of the suction connector, highlighting the transition region.
  • Figure 4 illustrates the preferential flow of refrigerant through the suction connector.
  • Figure 5 illustrates the non-preferential flow of refrigerant through the suction connector.
  • Figure 6 illustrates the assembly of the assembly comprising the intake of the acoustic suction filter, the suction connector and the outlet of the suction passer.
  • connection system applied to a hermetic compressor of the type comprising at least one acoustic suction filter and at least one suction duct; the connection system of the present invention being applied in the communication of coolant or working fluid between the suction duct outlet 3 and the acoustic suction filter inlet 4; the connection system comprising at least one connector suction pipe 1 provided with a passage channel 2 with at least one transition region 5 that connects the inside and the outside of the suction connector 1.
  • connection system proposed here aims to provide a type of suction here called quasi-direct, through the use of 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 passage channel 2, preferably arranged on its axial axis, this passage channel 2 communicates with at least one transition region 5, so that, at least part of the working fluid that travels through the passage channel 2 accesses said transition region 5.
  • the passage channel 2 is approximately cylindrical in shape, its cross section defining a circular sector, as can be seen in figure 2.
  • the suction connector 1 comprises an external trunk-conical shape, in particular, a bell-shaped trunk-conical shape, with the largest diameter base positioned in the vicinity of the suction duct outlet 3 and the smaller diameter base positioned in the vicinity of the suction filter inlet 4.
  • the suction connector 1 is composed of three parts (three trunks of cone), from its base to the apex.
  • the base of the suction connector 1 with the housing wall, next to the outlet of the suction dowel 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 an additional passage duct connected to its base and / or its apex.
  • a transition region 5 is defined, which is limited by an area of overlap of the surface of the suction connector 1, as can be seen. It is clear, therefore, when viewing figure 2, that the transition region 5 is defined by an overlapping region on the surface of the suction connector 1.
  • Said transition region 5 communicates with the interior of the suction connector 1, more specifically with the passage channel 2; and communicates with the outside of the suction connector. This is because the transition region 5 has at least one passage opening 6.
  • the suction connector 1 has two or more transition regions 5 on its surface.
  • the opening 6 extends on the side of the suction connector 1.
  • two or more openings 6 are provided on the side of the suction connector 1.
  • transition region 5 has a curvature, a fact that leads to the loss of charge of the refrigerant fluid that travels through it, this helps in the creation of an acoustic mode that reduces in a way the suction pulsation level is significant.
  • connection system proposed here 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 dimension that helps to prevent the return of heated fluid from the carcass.
  • 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 (near the outlet of the suction duct 3) or at the apex (near the inlet of the suction filter 4 ).
  • a porous element arranged on the base (near the outlet of the suction duct 3) or at the apex (near the inlet of the suction filter 4 ).

Landscapes

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

Abstract

La présente invention concerne un système de raccordement destiné à un compresseur hermétique du type comportant un filtre acoustique d'aspiration, le système de raccordement étant disposé entre l'orifice du compresseur d'aspiration et l'entrée du filtre acoustique d'aspiration. Le système de raccordement comprend au moins un raccord d'aspiration (1) qui présente une forme sensiblement tronconique et qui comprend un canal de passage (2) et une zone de transition (5) pour raccorder le canal de passage (2) et l'extérieur du raccord d'aspiration (1). Le raccord d'aspiration (1), qui présente une section transversale en forme de spirale, est apte à créer un mode acoustique qui réduit de manière significative le niveau de pulsation.
PCT/BR2020/050427 2019-10-21 2020-10-20 Système de raccordement appliqué à un compresseur hermétique WO2021077186A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102019022087-2A BR102019022087A2 (pt) 2019-10-21 2019-10-21 sistema de conexão aplicado a compressor hermético
BRBR1020190220872 2019-10-21

Publications (1)

Publication Number Publication Date
WO2021077186A1 true WO2021077186A1 (fr) 2021-04-29

Family

ID=73789771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2020/050427 WO2021077186A1 (fr) 2019-10-21 2020-10-20 Système de raccordement appliqué à un compresseur hermétique

Country Status (2)

Country Link
BR (1) BR102019022087A2 (fr)
WO (1) WO2021077186A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195486A2 (fr) * 1985-03-21 1986-09-24 Whirlpool International B.V. Ensemble moteur-compresseur hermétique pour un circuit de réfrigération
WO2007015222A1 (fr) * 2005-08-04 2007-02-08 Arcelik Anonim Sirketi Compresseur
US20080219863A1 (en) * 2007-03-06 2008-09-11 Lg Electronics Inc. Connector for hermetic compressor and suction device of working fluid using the same
JP2009079516A (ja) 2007-09-26 2009-04-16 Panasonic Corp 密閉型圧縮機
KR20110098494A (ko) 2010-02-26 2011-09-01 엘지전자 주식회사 밀폐형 압축기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195486A2 (fr) * 1985-03-21 1986-09-24 Whirlpool International B.V. Ensemble moteur-compresseur hermétique pour un circuit de réfrigération
WO2007015222A1 (fr) * 2005-08-04 2007-02-08 Arcelik Anonim Sirketi Compresseur
US20080219863A1 (en) * 2007-03-06 2008-09-11 Lg Electronics Inc. Connector for hermetic compressor and suction device of working fluid using the same
JP2009079516A (ja) 2007-09-26 2009-04-16 Panasonic Corp 密閉型圧縮機
KR20110098494A (ko) 2010-02-26 2011-09-01 엘지전자 주식회사 밀폐형 압축기

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