EP3277956A1 - Silencieux d'aspiration a utiliser dans un compresseur hermétique - Google Patents

Silencieux d'aspiration a utiliser dans un compresseur hermétique

Info

Publication number
EP3277956A1
EP3277956A1 EP15717824.5A EP15717824A EP3277956A1 EP 3277956 A1 EP3277956 A1 EP 3277956A1 EP 15717824 A EP15717824 A EP 15717824A EP 3277956 A1 EP3277956 A1 EP 3277956A1
Authority
EP
European Patent Office
Prior art keywords
suction muffler
casing
inlet port
flexible leaf
compressor
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
EP15717824.5A
Other languages
German (de)
English (en)
Other versions
EP3277956B1 (fr
Inventor
Mehmet Onur DINCER
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
Priority to PL15717824T priority Critical patent/PL3277956T3/pl
Publication of EP3277956A1 publication Critical patent/EP3277956A1/fr
Application granted granted Critical
Publication of EP3277956B1 publication Critical patent/EP3277956B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04B39/0027—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
    • F04B39/08—Actuation of distribution members
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members

Definitions

  • the present invention relates to a hermetically sealed compressor of a refrigeration appliance such as a domestic refrigerator.
  • the present invention particularly relates to the suction muffler of the hermetically sealed compressor.
  • Hermetically sealed compressors which are used in refrigeration appliances such as domestic refrigerators are commonly known.
  • a hermetically sealed compressor generally comprises a reciprocating mechanism which conveys the refrigerant from the evaporator site to the condenser site of the refrigeration circuit in the refrigeration appliance.
  • the flow of the refrigerant and the moving parts of the reciprocating mechanism generate detrimental vibrations and uncomfortable noise.
  • the refrigerant is generally passed through a suction muffler which is disposed into the hermetically sealed compressor on the upstream side of the valve plate.
  • the suction mufflers which are used in the hermetically sealed compressors are commonly known.
  • a suction muffler usually comprises a casing, at least one cavity inside the casing, an inlet port for admitting the refrigerant into the cavity, and an outlet port for discharging the refrigerant out of the cavity towards the valve plate, and therefrom into the cylinder bore.
  • the effective operation of the suction muffler is crucial for the compressor as well as for the customer satisfaction.
  • the installation place of the refrigeration appliance can easily become very noisy, and thus jeopardize a customer’s living comfort. Therefore, the noise produced by the flow of the refrigerant must be damped to ensure the silent operation of the refrigeration appliance.
  • the noise/vibration attenuation capability of the suction muffler depends, inter alia, on its size and shape. In general, an increase in the size of the suction muffler is not desired in view of the production costs. In addition, the size and shape of the suction muffler greatly influences the volumetric efficiency of the compressor, and thus the refrigeration performance of the appliance.
  • An objective of the present invention is to provide a suction muffler for use in a hermetically sealed compressor of a refrigeration appliance which overcomes the aforementioned drawbacks of the prior art in a cost effective way and which enables a low-noise emission, an improved volumetric efficiency and an improved refrigeration performance.
  • the suction muffler of the present invention comprises a backflow prevention device which is disposed into the cavity and adapted to prevent backflow of the refrigerant through the inlet port out of the cavity.
  • the refrigerant can be prevented during the compression phase of the compressor from flowing back towards the evaporator and heating up, expanding in the suction tube and the evaporator.
  • the amount of refrigerant that remains trapped inside the cavity during the compression phase also becomes comparatively higher. Thereby, a comparatively larger amount of refrigerant can be sucked out of the cavity into the cylinder bore during the suction phase of the compressor, and thus the volumetric efficiency of the compressor can be increased.
  • the refrigerant inside the cavity is also decoupled from the suction tube during compression phase, and thus the pressure waves excited in the refrigerant due to the reciprocating movement of the piston can be at least partly prevented from propagating into the suction tube and therefrom out of the compressor.
  • the sound waves propagating in the refrigerant encounter an increased number of successive impingements on the inner surface of the cavity during compression phase, and thus attenuate stronger.
  • the suction muffler of the present invention the noise generated by the flow of the refrigerant can be reduced to desired and bearable levels which comply with the standards without compromising the overall size of the compressor.
  • the refrigeration appliance can be prevented from causing any acoustic discomfort to the user.
  • a refrigeration appliance has been provided which has a low noise emission and a comparatively high refrigeration performance. Thereby, the customer satisfaction can be increased.
  • the backflow prevention device comprises a valve unit in particular a one-way valve unit which has a valve member that entirely closes the inlet port in the compression phase and re-opens in the suction phase.
  • valve members can be utilized in the valve unit or in the one-way valve unit.
  • the valve member can open/close the inlet port, through the action of elastic forces, electromagnetic forces, or gravity.
  • the one-way valve unit comprises a flexible leaf as a valve member that is attached to the inner surface of the casing so as to entirely cover the inlet port at the rest position.
  • the flexible leaf is made of a heat-resistant flexible material.
  • the flexible leaf can be made, for instance, from rubber. Alternatively metal can be used. Also composite materials can be used so as to reduce the risk of fatigue failures.
  • the stiffness of the flexible leaf is kept relatively small such that the inlet port easily re-opens at a relatively small differential pressure during the suction phase, but closes sufficiently tightly during the compression phase.
  • the flexible leaf can be attached to the inner surface by a chemical means such gluing or alternatively through any mechanical means which establishes the attachment by way of fitting, clamping, hinging, screwing or the like.
  • the flexible leaf is clamped into a retaining slot which is formed into the inner surface of the casing.
  • the retaining slot is integrally formed onto the inner surface of the casing during the manufacturing process.
  • the flexible leaf is glued into the retaining slot on the inner surface of the casing.
  • flexible leaf is fitted together with the pins which are disposed onto the inner surface of the casing.
  • the pins are integrally formed onto the inner surface during the manufacturing process.
  • Figure 1 – is a schematic sectional view of a hermetically sealed compressor which has a suction muffler according to an embodiment of the present invention
  • Figure 2 – is a schematic exploded perspective view of the suction muffler according to an embodiment of the present invention
  • Figure 3 – is a schematic perspective view of the lower part of the casing of the suction muffler according to an embodiment of the present invention
  • Figure 4 – is a schematic perspective view of the lower part of the casing of the suction muffler according to an alternative embodiment of the present invention.
  • the suction muffler (1) is suitable for use in a hermetically sealed compressor (2) of a refrigeration appliance (not shown) which has a refrigeration circuit for circulating the refrigerant via the hermetically sealed compressor (2).
  • the suction muffler (1) comprises a casing (3), a cavity (4) inside the casing (3), an inlet port (5) for admitting the refrigerant into the cavity (3) and an outlet port (6) for discharging the refrigerant out of the cavity (3) (Fig. 1 to 4).
  • the suction muffler (1) of the present invention further comprises: a backflow prevention device (7) which is disposed into the cavity (3) and adapted to prevent backflow of the refrigerant through the inlet port (5) out of the cavity (3) (Fig. 1 to 4).
  • the hermetically sealed compressor (2) of the present invention comprises the suction muffler (1).
  • the refrigeration appliance (not shown) of the present invention comprises the hermetically sealed compressor (2).
  • the backflow prevention device (7) comprises a one-way valve unit (8) which is adapted to open the inlet port (5) when the compressor (2) is in the suction phase and adapted to entirely close the inlet port (5) when the compressor (2) is in the compression phase.
  • the one-way valve unit (8) comprises a flexible leaf (9) which is adapted to move, under the action of the differential pressure during the suction phase of the compressor (2), from a rest position towards a deflected position.
  • the flexible leaf (9) is biased towards the rest position.
  • the inlet port (5) is opened when the flexible leaf (9) is moved to the deflected position during the suction phase.
  • the inlet port (5) is entirely closed when the flexible leaf (9) returns to its rest position during the compression phase.
  • the one-way valve unit (8) further comprises an attachment means (10) for the attachment of the flexible leaf (9) to the inner surface (11) of the casing (3) in close proximity to the inlet port (5) such that the flexible leaf (9) covers the entire inlet port (5) at the rest position.
  • the flexible leaf (9) is made of a flexible material.
  • the stiffness of the flexible leaf (9) is relatively small such that the inlet port (5) opens at a relatively small differential pressure during the suction phase of the compressor (2) and closes sufficiently tightly during the compression phase of the compressor (2) so as to prevent backflow (Fig. 1 to 4).
  • the inlet port (5) opens into a side wall (12) of the casing (3).
  • the flexible leaf (9) is attached via the attachment means (10) to the inner surface (11) of the casing (3) immediately above the inlet port (5) such that the flexible leaf (9) abuts against the side wall (12) at the rest position (Fig. 1 to 4).
  • the attachment means (10) comprises a retaining slot (13) which is disposed into the inner surface (11) of the casing (3).
  • the edge (14) of the flexible leaf (9) is clamped into the retaining slot (13) (Fig. 1 to 3).
  • edge (14) of the flexible leaf (9) is glued into the retaining slot (13) (Fig. 1 to 3).
  • the attachment means (10) comprises at least two pins (15) which are disposed onto the inner surface (11) of the casing (3).
  • the flexible leaf (9) has counterpart holes (16) for fitting together with the pins (15) respectively (Fig. 1 to 2, and 4).
  • the attachment means (10), namely the retaining slot (13) is integrally formed with the casing (3).
  • attachment means (10), namely the pins (15) are integrally formed with the casing (3).
  • the casing (3) is manufactured from a heat-resistant durable plastic material.
  • the casing (3) comprises an upper part (3a) and a lower part (3b) which are releasably attachable to each other.
  • the outlet port (6) is disposed into the upper part (3a).
  • the inlet port (5) is disposed into the lower part (3b).
  • the inlet port (5) and the outlet port (6) are aligned along mutually transverse directions. In this embodiment, the inlet port (5) and the outlet port (6) are located so as not to face each other.
  • the refrigeration appliance including the hermetically sealed compressor (2) of the present invention is provided as a domestic refrigerator (not shown).
  • the upper part (3a) of the casing (3) has one or more than one slots (17), and the lower part (3b) of the casing (3) has one or more than one claw (18) for snugly fitting into the corresponding slot (18).
  • the compressor (2) is hermetically sealed through the upper casing (19) and the lower casing (20).
  • the lower casing (20) serves as the lubricant sump (21).
  • An oil pickup-tube (22) is partly immersed into the lubricant sump (21).
  • the motor (23) has a stator (24) and a rotor (25).
  • the crankshaft (26) is journalled into the main bearing (27) of the cylinder block (28).
  • the rotor (25) is fixed around the crankshaft (26).
  • the piston (29) is reciprocatingly disposed into the cylinder bore (30) so as to compress the refrigerant therein and convey from the evaporator (not shown) to the condenser (not shown).
  • the piston (29) is coupled via the connecting rod (31) and the pin (32) to the crankshaft (26).
  • the cylinder bore (30) is covered by the cylinder head (33).
  • a valve plate (36) is arranged between the cylinder head (33) and the cylinder block (28).
  • the noise is mainly generated in the vicinity of the intake port (37) and the exhaust port (35) of the valve plate (36) under the influence of the reciprocating movement of the piston (29).
  • the suction muffler (1) attenuates the acoustic waves which are generated inside the refrigerant that flows through the cavity (4) during the suction phase.
  • the suction muffler (1) and the one-way valve unit (8) also attenuate during the compression phase the acoustic waves that propagate towards the suction tube, and therefrom to outside of the compressor (2).
  • the suction muffler (1) is mounted onto the cylinder head (33) such that the outlet port (6) is located immediately upstream of the valve plate (36).
  • the casing (3) of the suction muffler (1) has a drainage opening (not shown) for draining the lubricant into the sump (21).
  • the casing (3) comprises a piece (not shown) which partitions the cavity (4) into two or more than two fluidly connected chambers (not shown) for improving the acoustic attenuation.
  • the volumetric efficiency of the hermetically sealed compressor (2) can be increased in a cost-effective way. Also with the suction muffler (1) of the present invention, the noise level of the hermetically sealed compressor (2) can be reduced in a cost-effective way.

Landscapes

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

Abstract

La présente invention concerne un silencieux d'aspiration (1), lequel silencieux est destiné à être utilisé dans un compresseur hermétiquement scellé (2) d'un appareil de réfrigération comprenant un circuit de réfrigération pour faire circuler le réfrigérant à travers le compresseur hermétiquement scellé (2). Le silencieux d'aspiration (1) comprend une enveloppe (3), une cavité (4) à l'intérieur de l'enveloppe (3), un orifice d'entrée (5) pour admettre le réfrigérant dans la cavité (3) et un orifice de sortie (6) pour évacuer le réfrigérant hors de la cavité (3). Le silencieux d'aspiration (1) selon la présente invention comprend en outre un dispositif de prévention de retour d'écoulement (7) qui est disposé dans la cavité (3) et qui est apte à empêcher un retour d'écoulement du réfrigérant à travers l'orifice d'entrée (5) hors de la cavité (3).
EP15717824.5A 2015-03-31 2015-03-31 Silencieux d'aspiration a utiliser dans un compresseur hermétique Active EP3277956B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15717824T PL3277956T3 (pl) 2015-03-31 2015-03-31 Tłumik ssący do zastosowania w sprężarce hermetycznej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/057057 WO2016155799A1 (fr) 2015-03-31 2015-03-31 Silencieux d'aspiration a utiliser dans un compresseur hermétique

Publications (2)

Publication Number Publication Date
EP3277956A1 true EP3277956A1 (fr) 2018-02-07
EP3277956B1 EP3277956B1 (fr) 2020-02-12

Family

ID=52997400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15717824.5A Active EP3277956B1 (fr) 2015-03-31 2015-03-31 Silencieux d'aspiration a utiliser dans un compresseur hermétique

Country Status (3)

Country Link
EP (1) EP3277956B1 (fr)
PL (1) PL3277956T3 (fr)
WO (1) WO2016155799A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020240048A1 (fr) 2019-05-31 2020-12-03 Arcelik Anonim Sirketi Compresseur hermétique comprenant un silencieux d'aspiration
CN114542430B (zh) * 2022-03-25 2023-03-24 珠海格力电器股份有限公司 一种吸气消音器及包括其的压缩机、冰箱

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200148573Y1 (ko) * 1996-12-06 1999-06-15 구자홍 밀폐형 압축기의 흡입소음 저감장치
JP2002147353A (ja) * 2000-11-09 2002-05-22 Matsushita Refrig Co Ltd 密閉型圧縮機
KR101386477B1 (ko) * 2008-01-10 2014-04-18 엘지전자 주식회사 밀폐형 압축기의 소음 저감 장치
JP5325041B2 (ja) * 2009-07-30 2013-10-23 サンデン株式会社 往復動圧縮機

Also Published As

Publication number Publication date
WO2016155799A1 (fr) 2016-10-06
PL3277956T3 (pl) 2020-07-27
EP3277956B1 (fr) 2020-02-12

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