(19)
(11)EP 3 775 550 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
07.09.2022 Bulletin 2022/36

(21)Application number: 19714379.5

(22)Date of filing:  26.03.2019
(51)International Patent Classification (IPC): 
F04B 39/00(2006.01)
F04B 39/12(2006.01)
(52)Cooperative Patent Classification (CPC):
F04B 39/0044; F04B 39/0061; F04B 39/127
(86)International application number:
PCT/EP2019/057576
(87)International publication number:
WO 2019/192893 (10.10.2019 Gazette  2019/41)

(54)

A COMPRESSOR WITH IMPROVED OPERATIONAL EFFICIENCY

VERDICHTER MIT VERBESSERTER BETRIEBSEFFIZIENZ

COMPRESSEUR AYANT UNE MEILLEURE EFFICACITÉ OPÉRATIONNELLE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 04.04.2018 TR 201804743

(43)Date of publication of application:
17.02.2021 Bulletin 2021/07

(73)Proprietor: Arçelik Anonim Sirketi
34445 Istanbul (TR)

(72)Inventors:
  • DINCER, Mehmet Onur
    34950 ISTANBUL (TR)
  • ORUC, Emre
    34950 ISTANBUL (TR)


(56)References cited: : 
EP-A1- 3 039 292
WO-A1-2014/053368
WO-A1-2015/149833
EP-A1- 3 242 019
WO-A1-2014/059503
JP-A- S59 147 887
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates to a compressor. In particular, the present invention relates to a compressor adapted to be used in cooler appliances.

    [0002] In compressors, a refrigerant compressed in a cylinder volume reaches high temperatures and pressures. A refrigerant at high temperatures transmit heat to the interior of the compressor and to the components it contacts until it is discharged from the compressor. Heating of the components disposed in the inner volume of a compressor adversely affects the compressor's efficiency. In order to mitigate this effect, designs are present in which the mufflers through which the refrigerant at high temperatures passes, are isolated from a compressor's body and placed in a tube form on a vibration eliminator. Vibration eliminators are made of metal due to the fact that vibration eliminators are connected on compressors by means of bolts and high pressure gas passes therethrough. Vibration eliminators being made of metal makes it necessary for the muffler body added thereon, to be also made of metal as well. However, a muffler body being made of metal or a similar material with high thermal transmission properties, increases the heat transferred into a compressor from the refrigerant of high temperatures and thereby decreases the efficiency of the compressor. On the other hand, producing a muffler body from a non-metal material with a low thermal transmission coefficient, would create difficulties in connecting the muffler body to vibration eliminators enabling gas intake to and discharge from the muffler body, which are joined to a muffler body by welding in the prior art. In addition, a muffler body being made of metal restricts the possibility of creating complex duct designs for enhancing acoustic damping efficiency.

    [0003] State of the art patent document no. EP1942274B1 discloses a compressor.

    [0004] State of the art patent document no. EP3039292B1 discloses a compressor. Further prior art is disclosed by WO2014/059503 and JPS59147887.

    [0005] The aim of the present invention is to reduce the amount of heat transferred from a refrigerant at high temperatures passing through a compressor, to the components and the inner environment of the compressor, and to improve the operational efficiency of the compressor.

    [0006] The compressor realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims, comprises a muffler body provided on a vibration eliminator, segmenting the vibration eliminator into two parts. The muffler body is placed on the vibration eliminator by means of a front cover and a rear cover. The vibration eliminator is fastened to the holes provided on the front cover and the rear cover by welding. The muffler body positioned between said covers, is fastened by the coupling member contacting the front cover and the rear cover and creating a pulling force between the front cover and the rear cover. Thus, welding application is not required between the muffler body and the covers, assembly is facilitated and a wider range of material options can be used for making the muffler body.

    [0007] In an alternative not claimed, the compressor comprises a coupling member in the form of a screw, placed in the holes provided in the front cover and the rear cover, enabling fastening the front cover and the rear cover to each other on the muffler body, by being rotated. Thus, it is no longer required to apply welding, facilitating assembly.

    [0008] In an alternative not claimed, the compressor comprises a coupling means having a cavity allowing the vibration eliminator to fit therein, extending along the muffler body while contacting the front cover and the rear cover. Said coupling means is U-shaped and is produced to be biased. This enables exerting pressure on the front cover and the rear cover and fastening the muffler body between the front cover and the rear cover without welding application.

    [0009] According to the invention, the compressor has a first frame and a second frame enclosing the periphery of the front cover and the rear cover. The first frame and the second frame form a surface to enable at least one coupling means to rest on the periphery of the front cover and the rear cover. This enables fastening the muffler body between the front cover and the rear cover without welding application.

    [0010] In an embodiment of the invention, the compressor comprises a muffler body made of plastic. The muffler body being made of plastic decreases the thermal conductivity, thereby reducing the heat transmitted to the inner environment and the components of the compressor, thus improving the operational efficiency of the compressor.

    [0011] The present invention provides flexibility in design developments for enhancing acoustic damping efficiency in compressors by enabling the muffler bodies to be made of plastic or similar materials with low thermal conductivity, instead of metal.

    [0012] The compressor realized to achieve the aims of the present invention is illustrated in the accompanying drawings, wherein:

    Figure 1 is a perspective view of the compressor.

    Figure 2 is a perspective view of the body.

    Figure 3 is an exploded perspective view of an alternative.

    Figure 4 is an exploded side view of an alternative.

    Figure 5 is an exploded perspective view of an alternative.

    Figure 6 is a side view of an alternative.

    Figure 7 is a side view of an embodiment of the invention.

    Figure 8 is an exploded perspective view of an embodiment of the invention.



    [0013] The elements in the figures are numbered individually and the correspondence of these numbers are given hereinafter.

    1. Compressor

    2. Housing

    3. Body

    4. Terminal

    5. Vibration eliminator

    6. Front cover

    7. Rear cover

    8. Muffler body

    9. Coupling member

    10. Cavity

    11. First panel

    12. Second panel

    13. Third panel

    14. First frame

    15. Second frame



    [0014] The compressor (1) of the invention comprises a housing (2) enclosing the movable parts, a body (3) on which the parts are gathered, a vibration eliminator (5) placed on the body (3) with one of its ends and whose other end is fastened on a terminal (4) provided on the housing (2) and opening to the outer environment, and a muffler body (8) provided on the vibration eliminator (5), segmenting the vibration eliminator (5) into two parts and placed on the vibration eliminator (5) by means of a front cover (6) and a rear cover (7).

    [0015] The compressor (1) of the invention comprises a coupling member (9) exerting pressure on the front cover (6) and the rear cover (7) by contacting the front cover (6) and the rear cover (7), enabling the front cover (6) and the rear cover (7) to be rigidly fastened on the muffler body (8) almost completely immovably with respect to each other. The muffler body (8) segments the vibration eliminator (5) into two parts. The vibration eliminator (5) is fastened to the muffler body (8) by means of the front cover (6) and the rear cover (7). The vibration eliminator (5) is placed into the holes provided on the front cover (6) and the rear cover (7). The muffler body (8) is disposed in between the front cover (6) and the rear cover (7). The refrigerant reaching the muffler body (8) from the vibration eliminator (5) by means of the front cover (6), is transmitted to the vibration eliminator (5) by means of the hole provided on the rear cover (7). The front and rear covers (6, 7) are fastened immovably with respect to each other by a coupling member (9) extending between the front cover (6) and the rear cover (7), thereby fastening the muffler body (8) with a rigid structure.

    [0016] In an alternative , the compressor (1) comprises a screw-shaped coupling member (9) enabling fastening the front cover (6) and the rear cover (7) to each other by passing through the holes disposed mutually on the front cover (6) and the rear cover (7). The screw-shaped coupling member (9) placed through the holes provided on the surfaces of the front cover (6) and the rear cover (7) facing the muffler body (8), facilitates assembly and improves labor costs. The screw-shaped coupling member (9) pulls the front cover (6) and the rear cover (7) against each other by being rotated, and the coupling member (9) is thus fastened by being compressed in between the front cover (6) and the rear cover (7).

    [0017] In another alternative, the compressor (1) comprises a biased and U-shaped coupling member (9) having a first panel (11) and a second panel (12) extending partially on the front cover (6) and the rear cover (7), respectively, each having a cavity (10) allowing the vibration eliminator (5) to fit therein, and a third panel (13) extending along the muffler body (5) so as to connect the first panel (11) and the second panel (12) to each other. The first panel (11) and the second panel (12) exert pressure on the front cover (6) and the rear cover (7), respectively, and are almost parallel to each other. The front cover (6) and the rear cover (7) are placed on the vibration eliminator (5) by means of their cavities (10). The first panel (11) and the second panel (12) are connected to each other by means of a third panel (13), forming all together the coupling member (9). The coupling member (9) is U-shaped and made of a biased material, and thus exerts pressure on the front cover (6) and the rear cover (7), fastening the muffler body (8).

    [0018] The compressor (1) of the invention, comprises a first frame (14) and a second frame (15) placed vis-à-vis, enclosing the periphery of the front cover (6) and the rear cover (7), respectively, and at least one coupling member (9) extending in between the first frame (14) and the second frame (15). The coupling member (9) enclosing the periphery of the front cover (6) and the rear cover (7) and act as a support for front cover (6) and the rear cover (7). By this, the front cover (6), the rear cover (7) and the vibration eliminator (5) made of metal are easily assembled on the muffler body (8).

    [0019] The compressor (1) of the invention comprises a muffler body (8) made of plastics. The muffler body (8) made of plastic, has low thermal conductivity and transmits a minimum amount of heat to the inner environment and the other components of the compressor (1) during operation of the compressor (1). This enables improving the operational efficiency of the compressor (1).

    [0020] The compressor (1) of the invention enables the metal vibration eliminator (5) to be connected to the muffler body (8) made of plastic or similar material with low thermal conductivity, thereby improving the operational efficiency of the compressor (1), and making the muffler body (8) of plastic also enhances the acoustic damping characteristics thereof.


    Claims

    1. A compressor (1) comprising a housing (2) enclosing the movable parts, a body (3) on which the parts are gathered, a vibration eliminator (5) placed on the body (3) with one of its ends, whose other end is fastened on a terminal (4) provided on the housing (2) and opening to the outer environment, and a muffler body (8) provided on the vibration eliminator (5), segmenting the vibration eliminator (5) into two parts and placed on the vibration eliminator (5) by means of a front cover (6) and a rear cover (7), characterized by comprising a coupling member (9) exerting pressure on the front cover (6) and the rear cover (7), enabling the front cover (6) and the rear cover (7) to be rigidly fastened on the muffler body (8) almost completely immovably with respect to each other, a first frame (14) and a second frame (15) placed vis-à-vis, enclosing the periphery of the front cover (6) and the rear cover (7) respectively, and by the at least one coupling member (9) extending in between the first frame (14) and the second frame (15).
     
    2. A compressor (1) according to claim 1, characterized by the muffler body (8) made of plastic.
     


    Ansprüche

    1. Ein Kompressor (1) umfasst ein Gehäuse (2), das die beweglichen Teile umschließt, einen Körper (3), auf dem die Teile gesammelt werden, einen Schwingungstilger (5), der mit einem seiner Enden auf dem Körper (3) angeordnet ist, dessen anderes Ende an einem Anschluss (4) befestigt ist, der am Gehäuse (2) vorgesehen ist und sich zur äußeren Umgebung öffnet, und einen am Schwingungstilger (5) vorgesehenen Schalldämpferkörper (8), der den Schwingungstilger (5) in zwei Teile segmentiert und mithilfe einer vorderen Abdeckung (6) und einer hinteren Abdeckung (7) auf dem Schwingungstilger (5) angeordnet ist, gekennzeichnet ist er durch einen Kopplungselement (9), der Druck auf die vordere Abdeckung (6) und hintere Abdeckung (7) ausübt und es ermöglicht, dass die vordere Abdeckung (6) und die hintere Abdeckung (7) starr an dem Schalldämpferkörper (8) nahezu vollständig unbeweglich in Bezug zueinander befestigt werden können, einen ersten Rahmen (14) und einen zweiten Rahmen (15), die einander gegenüberliegend angeordnet sind und den Umfang der vorderen Abdeckung (6) bzw. der hinteren Abdeckung (7) umschließen, und durch das mindestens eine Kopplungselement (9) sich zwischen dem ersten Rahmen (14) und dem zweiten Rahmen (15) erstreckt.
     
    2. Ein Kompressor (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass der Schalldämpferkörper (8) aus Kunststoff besteht.
     


    Revendications

    1. Un compresseur (1) comprenant un boîtier (2) renfermant les pièces mobiles, un corps (3) sur lequel les pièces sont rassemblées, un éliminateur de vibrations (5) placé sur le corps (3) avec l'une de ses extrémités, dont l'autre extrémité est fixée sur une borne (4) prévue sur le boîtier (2) et s'ouvrant sur l'environnement extérieur, et un corps de silencieux (8) prévu sur l'éliminateur de vibrations (5), séparant l'éliminateur de vibrations (5) en deux parties et placé sur l'éliminateur de vibrations (5) à travers un couvercle avant (6) et un couvercle arrière (7), caractérisé en ce qu'il comprenne un élément de couplage (9) exerçant une pression sur le couvercle avant (6) et le couvercle arrière (7), permettant de fixer rigidement le couvercle avant (6) et le couvercle arrière (7) sur le corps de silencieux (8) de façon presque totalement immobile l'un par rapport à l'autre, un premier cadre (14) et un second cadre (15) placés face à face, entourant respectivement la périphérie du couvercle avant (6) et du couvercle arrière (7), et par au moins un élément de couplage (9) s'étendant entre le premier cadre (14) et le second cadre (15).
     
    2. Un compresseur (1) selon la revendication 1, caractérisé par le corps du silencieux (8) fabriqué en matière plastique.
     




    Drawing

















    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description