(19)
(11) EP 1 831 619 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
14.03.2018 Bulletin 2018/11

(21) Application number: 05826524.0

(22) Date of filing: 24.12.2005
(51) International Patent Classification (IPC): 
F25B 43/00(2006.01)
F25B 41/06(2006.01)
(86) International application number:
PCT/IB2005/054397
(87) International publication number:
WO 2006/067766 (29.06.2006 Gazette 2006/26)

(54)

A COOLING DEVICE

KÜHLVORRICHTUNG

DISPOSITIF DE REFROIDISSEMENT


(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 24.12.2004 TR 200403611

(43) Date of publication of application:
12.09.2007 Bulletin 2007/37

(73) Proprietor: Arçelik Anonim Sirketi
34950 Istanbul (TR)

(72) Inventor:
  • Inan, Cemil
    Tuzla, 34950 Istanbul (TR)


(56) References cited: : 
DE-U1- 7 638 017
US-A- 6 125 652
US-A- 5 934 102
   
       
    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] This invention relates to a cooling device comprising a dryer in its cooling cycle.

    [0002] A dryer between the condenser and the capillary tube is utilized in the cooling cycle to withhold the impurities in the circulating refrigerant fluid and to prevent these impurities from clogging especially the capillary tube and to absorb the moisture of the refrigerant fluid.

    [0003] In state-of-the-art embodiments, as the compressor starts to operate, circulation of the refrigerant fluid may generate noise as a consequence of various reasons. One of the most important reasons for this noise is the creation of a vortex or turbulence at the entrance to the capillary tubes by the refrigerant fluid which is in a liquid and gas phase in the dryer.

    [0004] In the current state-of-the-art, in British Patent Application no. GB1435490, a description is given of a dryer composed of two tubes one inside the other providing the dryness of the compressed refrigerant and separating the impurities contained within.

    [0005] In the current state-of-the-art, in German Patent Application no. DE2656664, as it flows through the dryer, the refrigerant fluid makes a circular motion to separate the impurities.

    [0006] In another state-of-the-art, in United States of America Patent no. US6681596, the fixing of the dryer to the tube transferring the refrigerant to the dryer is described.

    [0007] DE7638017U1 relates to a cooling device including a body for drying with a plate extending over the whole cross section. The object of the present invention is to design a cooling device comprising a dryer which prevents noise by avoiding the formation of a vortex or turbulence during the circulation of the refrigerant fluid.

    [0008] The cooling device designed to fulfill the objective of the present invention is shown in the attached figures, where:

    Figure 1 - is the schematic view of a refrigerant cycle.

    Figure 2 - is the schematic view of a according to the present invention.

    Figure 3 - is the sectional view of the body inner wall and the plates mounted on the body inner wall.

    Figure 4 - is the perspective view of the body inner wall and the plates mounted on the body inner wall.

    Figure 5 - is the schematic view of a plate with holes according to a preferred embodiment.

    Figure 6 - is the schematic view of a plate with a bend according to another preferred embodiment.

    Figure 7 - is the schematic view of a dryer having an additional filter according to a preferred embodiment.

    Figure 8 - is the schematic view of a dryer and the capillary tube inserted into the dryer with a certain angle according to a preferred embodiment.



    [0009] Elements shown in the figures are numbered as follows:
    1. 1. Cooling device
    2. 2. Compressor
    3. 3. Evaporator
    4. 4. Condenser
    5. 5. Capillary tube
    6. 6. Dryer
    7. 7. Body
    8. 8. Inlet
    9. 9. Outlet
    10. 10. Filter group
    11. 11. Coarse filter
    12. 12. Fine filter
    13. 13. Additional filter
    14. 14. Moisture filter
    15. 15. Plate
    16. 16. Hole
    17. 17. Bend


    [0010] The cooling device (1) of the present invention comprises a compressor (2) providing the compression of the refrigerant fluid, a condenser (4) which condenses the refrigerant fluid leaving the compressor (2) as overheated vapour, making it first to pass into liquid-vapour phase then into liquid phase, one or more capillary tubes (5) providing the refrigerant fluid to attenuate and to entirely pass into the liquid phase, one or more evaporators (3) transmitting the condensed fluid, cooling the medium by absorbing heat of the medium and providing the refrigerant fluid to cool the cooling compartment by absorbing heat, and a dryer (6) situated between the condenser (4) and the capillary tubes (5), preventing the clogging of particularly the capillary tubes (5) by withholding the impurities contained within the refrigerant fluid circulating in the cooling cycle and absorbing the moisture in the refrigerant fluid (Figure 1).

    [0011] The dryer (6) comprises preferably a cylindrical body (7), an inlet (8) which is attached to the outlet of the condenser (4) situated at one end of the body (7) and through which the refrigerant fluid flowing through the condenser (4) is transmitted, an outlet (9) attached to the inlet of the capillary tubes (5) providing flow of the refrigerant fluid into the capillary tubes (5), a filter group (10) situated between the inlet (8) and the outlet (9), withholding the impurities of various sizes and the moisture contained within the refrigerant fluid, and one or more plates (15) positioned between the filter group (10) and the outlet (9) situated on the inner wall of the body(7), preventing the creation of a vortex and turbulence by the refrigerant fluid flowing through the filter group (10) and reducing the noise caused by the vortex and turbulence to a minimum level (Figure 2, Figure 3, and Figure 4).

    [0012] The plate (15) is positioned on the inner wall of the body (7), around the outlet (9).

    [0013] In a preferred embodiment of the present invention, the plate (15) comprises holes (16) of various sizes and numbers (Figure 5).

    [0014] In yet another preferred embodiment of the present invention, the plate (15) comprises one or more bends (17) at different angles (Figure 6). In a preferred embodiment the filter group (10) comprises a coarse filter (11) which receives the refrigerant fluid entering through the inlet (8) and withholds the larger sized impurities, one or more moisture filters (14) after the coarse filter (11) which entraps the moisture contained in the refrigerant fluid, and a fine filter (12) situated after the moisture entrapping filter (14) which withholds smaller sized impurities contained in the refrigerant fluid that the coarse filter (11) can not withhold.

    [0015] In a preferred embodiment, the filter group (10) comprises one or more additional filters (13) positioned after the fine filter (12) and before the outlet (9) which withholds the smaller sized impurities that even the fine filter (12) cannot withhold (Figure 7).

    [0016] In another embodiment, the section of the capillary tube (5) entering through the outlet (9) situated on the dryer (6) that is between the filter group (10) in the dryer (6) and the outlet (9) is bent with an angle preferably between 0 and 45 degrees. Thus the noise created due to vortex and turbulence is reduced to a minimum level (Figure 8).

    [0017] With the embodiment of the present invention, the noise created by the vortex and turbulence during the flow of the refrigerant fluid from the dryer (6) to the capillary tube (5) is reduced to a minimum level by utilizing the plate (15) situated in the dryer (6).


    Claims

    1. A cooling device (1) comprising a compressor (2) providing the compression of the refrigerant fluid, a condenser (4) through which the refrigerant fluid leaving the compressor (2) passes and one or more capillary tubes (5) and a dryer (6) situated between the condenser (4) and the capillary tubes (5), comprising a body (7), an inlet (8) attached to the outlet of the condenser (4) from one end of the body (7) and through which the refrigerant fluid flowing through the condenser (4) is transmitted, an outlet (9) attached to the inlet of the capillary tube (5), providing the refrigerant fluid to flow into the capillary tubes (5), one or more filter groups (10) situated between the inlet (8) and the outlet (9), withholding the impurities of various sizes and the moisture contained within the refrigerant fluid, and one or more plates (15) positioned between the filter group (10) and the outlet (9) characterized by each plate (15) extending from a connecting portion at the inner wall of the body (7) to a free end in the interior of the body (7), said one or more plates (15) preventing the creation of a vortex and turbulence by the refrigerant fluid flowing through the filter group (10) at the outlet attached to the inlet of the capillary tube (5) and reducing the noise caused by the vortex and turbulence to a minimum level.
     
    2. The cooling device (1) as in Claim 1, characterized by a dryer (6) comprising plates (15) positioned around the outlet (9), on the inner wall of the body (7) where the filter group (10) and the outlet (9) are situated.
     
    3. The cooling device (1) as in Claim 1 or 2, characterized by a dryer (6) comprising a plate (15) having holes (16) of various sizes and numbers.
     
    4. The cooling device (1) as in Claim 1, 2 or 3, characterized by a dryer (6) comprising a plate (15) having one or more bends (17) at various angles.
     
    5. The cooling device (1) as in any one of the above claims, characterized by a dryer (6) comprising a filter group (10) having a coarse filter (11) which receives the refrigerant fluid entering through the inlet (8) and withholds the larger sized impurities, one or more moisture filters (14) after the coarse filter (11) which entraps the moisture contained in the refrigerant fluid, a fine filter (12) situated after the moisture filter (14) which withholds smaller sized impurities contained in the refrigerant fluid that the coarse filter (11) can not withhold and one or more additional filters (13) situated after the fine filter (12), withholding smaller sized impurities that even the fine filter (12) cannot withhold.
     
    6. The cooling device (1) as in Claim 1, characterized by a capillary tube (5) entering into the dryer (6) through the outlet (9), having its end between the filter group (10) and the outlet (9) bent at a certain angle.
     
    7. The cooling device (1) as in Claim 6, characterized by a capillary tube (5), having its end entering into the dryer (6) through the outlet (9) bent at an angle between 0 and 45 degrees.
     
    8. The cooling device (1) as in any one of the above claims, characterized in that the free end of each plate (15) is ending at less than half the distance between the connecting portion for the same plate (15) at the inner wall of the body (7) and an opposite portion of the inner wall such that in the centre of the interior of the body (7) a continuous flow of refrigerant fluid is made possible.
     
    9. The cooling device (1) as in Claim 8, characterized by two pairs of two plates (15) each of which are facing each other, the plates (15) of the two pairs extending perpendicularly to each other.
     
    10. The cooling device (1) as in any one of the above claims, wherein the inner wall of the body (7) is semi-spherical.
     


    Ansprüche

    1. Ein Kühlgerät (1) bestehend aus einem Kompressor (2), der die Pressung der Kältemittelflüssigkeit sicherstellt, einemKühler(4) wodurch die Kühlflüssigkeit hingeht, die den Kompressor (2) verläßt und einer oder mehreren Kapillarrohre (5) und einem Trockner (6),die hingesetzt sind zwischen dem Kühler (4) und Kapillarrohre (5), beinhaltet einen Körper (7), einen Eingang (8) eingebaut zum Ausgang des Kühlers (4) von einem Ende des Körpers (7) und wodurch die Kälte-mittelflüssigkeit, die durch den Kühler (4) fließt, übertragen wird, einen Ausgang (9) eingebaut zum Ausgang der Kapillarrohre (5), der sicherstellt, daß die Kältemittel-flüssigkeit in die Kapillarrohre (5) hinfließt, einer oder mehreren Filtergruppen (10), die hingelegt sind zwischen dem Eingang (8) und Ausgang (9), zurückbehält die Fremdstoffe in verschiedenen Größen und die Feuchte behalten innerhalb der Kältemittelflüssigkeit, und einer oder mehreren Platten (15) eingesetzt zwischen der Filtergruppe (10) und dem Ausgang (9),gekennzeichnet bei jeder Platte (15), die sich ausstrecken von einem Verbindungsteil am innerer Wand des Körpers (7) zu einem freien Ende im Innern des Körpers (7), besagte eine oder mehrere Platten (15)verhindern die Bildung von einem Wirbel und Turbulenz bei der Kältemittelflüssigkeit, die hinfließt durch die Filtergruppe (10) am Ausgang eingebaut zum Eingang der Kapillarrohre (5) und reduziert den Lärm verursacht vom Wirbel und Turbulenz zu einer Untergrenze.
     
    2. Ein Kühlgerät (1) nach Anspruch 1, gekennzeichnet durch einen Trockner (6), der beinhaltet Platten (15), die aufgestellt ist um den Ausgang (9) auf der inneren Wand des Körpers (7), wo die Filtergruppe (10) und der Ausgang (9) hingesetzt sind.
     
    3. Ein Kühlgerät (1) nach Anspruch 1 oder 2, gekennzeichnet durch einen Trockner (6), der beinhaltet eine Platte (15) mit Löcher (16) in verschiedenen Größen und Anzählen.
     
    4. Ein Kühlgerät (1) nach Anspruch 1, 2 oder 3, gekennzeichnet durch einen Trockner (6), der beinhaltet eine Platte (15) mit einer oder mehreren Kurven (17) in verschiedenen Winkeln.
     
    5. Ein Kühlgerät (1) nach den vorhergehenden Ansprüche, gekennzeichnet durch einen Trockner (6), der beinhaltet eine Filtergruppe (10) mit einem Grobfilter (11), der Kältemittelflüssigkeit erhält, die durch den Eingang (8) hingeht und zurückhält Fremdstoffe in größeren Ausmaßen, eine oder mehrere Feuchtefiltern (14) nach dem Grobfilter (11), der die Feuchte fängt, die in der Kältemittelflüssigkeit behalten ist, ein Feinfilter (12) hingesetzt nach dem Feuchtefilter (14), der Fremdstoffe in kleineren Größen zurückhält, die in der Kältemittelflüssigkeit behalten sind, die der Grobfilter (11) nicht zurückhalten kann und eine oder mehrere zusätzliche Filtern (13) hingesetzt nach dem Feinfilter (12), die die Fremdstoffe in kleineren Größen zurückhält, die der Feinfilter (12) nicht zurückhalten kann.
     
    6. Ein Kühlgerät (1) nach Anspruch 1, gekennzeichnet durch eine Kapillarrohre (5), die in den Trockner (6) hingeht durch den Ausgang (9)mit seinem Ende zwischen der Filtergruppe (10) und dem Ausgang (9) gekrümmt in einem bestimmten Winkel.
     
    7. Ein Kühlgerät (1) nach Anspruch 6, gekennzeichnet durch eine Kapillarrohre (5),die mit seinem Ende in den Trockner (6) hingeht durch den Ausgang (9) gekrümmt in einem Winkel zwischen 0 und 45 Grad.
     
    8. Ein Kühlgerät (1) nach den vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das freie Ende jeder Platte (15) sich beendet an einer Entfernung kleiner als die Hälfte der Strecke zwischen dem Verbindungsteil für die selbe Platte (15) an einer inneren Wand des Körpers (7) und einem dagegenstehenden Teil der inneren Wand, sodaß im Zentrum im Innern des Körpers (7) ein kontinuierlicher Fluss der Kältemittelflüssigkeit möglich gemacht wird.
     
    9. Ein Kühlgerät (1) nach Anspruch 8, gekennzeichnet durch zwei Paaren von zwei Platten (15), wo jede von denen gegenüberstehen, die Platten (15) der zwei Paaren strecken sich gegenseitig senkrecht aus.
     
    10. Ein Kühlgerät (1) nach den vorhergehenden Ansprüche, wo die innere Wand des Körpers (7) halbkugelförmig ist.
     


    Revendications

    1. Dispositif de refroidissement (1) comprenant un compresseur (2) assurant la compression du fluide réfrigérant, un condenseur (4) à travers lequel passe le fluide réfrigérant sortant du compresseur (2) et un ou plusieurs tubes capillaires (5) et un sécheur (6) situé entre le condenseur (4) et les tubes capillaires (5), comprenant un corps (7), une entrée (8) fixée à la sortie du condenseur (4) d'une extrémité du corps (7) et à travers laquelle le fluide réfrigérant circulant à travers le condenseur (4) est transmis, une sortie (9) attaché à l'entrée du tube capillaire (5), fournissant le fluide réfrigérant pour s'écouler dans les tubes capillaires (5), un ou plusieurs groupes de filtres (10) situés entre l'entrée (8) et la sortie (9), retenir les impuretés de différentes tailles et l'humidité contenue dans le fluide réfrigérant, et une ou plusieurs plaques (15) positionnées entre le groupe de filtres (10) et la sortie (9), chaque plaque (15) s'étendant à partir d'une partie de connexion la paroi interne du corps (7) jusqu'à une extrémité libre à l'intérieur du corps (7), ladite ou lesdites plaques (15) empêchent la création d'un vortex et d'une turbulence par le fluide réfrigérant circulant à travers le groupe de filtres (10) à la sortie fixée à l'entrée du tube capillaire (5) et réduisant le bruit provoqué par le vortex et la turbulence à un niveau minimum.
     
    2. Dispositif de refroidissement (1) selon la revendication 1, caractérisé par un séchoir (6) comprenant des plaques (15) positionnées autour de la sortie (9), sur la paroi interne du corps (7) où le groupe de filtres (10) et le sortie (9) sont situés.
     
    3. Dispositif de refroidissement (1) selon la revendication 1 ou 2, caractérisé par un séchoir (6) comprenant une plaque (15) ayant des trous (16) de différentes tailles et nombres.
     
    4. Dispositif de refroidissement (1) selon la revendication 1, 2 ou 3, caractérisé par un séchoir (6) comprenant une plaque (15) ayant un ou plusieurs courbures (17) à différents angles.
     
    5. Dispositif de refroidissement (1) selon l'une quelconque des revendications précédentes, caractérisé par un sécheur (6) comprenant un groupe de filtres (10) ayant un filtre grossier (11) qui reçoit le fluide réfrigérant entrant par l'entrée (8) et retenant les impuretés de plus grande taille, un ou plusieurs filtres d'humidité (14) après le filtre grossier (11) qui emprisonne l'humidité contenue dans le fluide réfrigérant, un filtre fin (12) situé après le filtre d'humidité (14) qui retient des impuretés de plus petite taille contenues dans le fluide frigorigène que le filtre grossier (11) ne peut retenir et un ou plusieurs filtres supplémentaires (13) situés après le filtre fin (12), retenant des impuretés de plus petite taille que même le filtre fin (12) ne peut retenir.
     
    6. Dispositif de refroidissement (1) selon la revendication 1, caractérisé par un tube capillaire (5) pénétrant dans le séchoir (6) à travers la sortie (9), son extrémité entre le groupe de filtres (10) et la sortie (9) étant courbée à un certain angle.
     
    7. Dispositif de refroidissement (1) selon la revendication 6, caractérisé par un tube capillaire (5) dont l'extrémité pénètre dans le sécheur (6) à travers la sortie (9) coudée selon un angle compris entre 0 et 45 degrés.
     
    8. Dispositif de refroidissement (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'extrémité libre de chaque plaque (15) se termine à moins de la moitié de la distance entre la partie de connexion pour la même plaque (15) du corps (7) et d'une partie opposée de la paroi interne de sorte qu'au centre de l'intérieur du corps (7), un écoulement continu de fluide réfrigérant est rendu possible.
     
    9. Dispositif de refroidissement (1) selon la revendication 8, caractérisé par deux paires de deux plaques (15) se faisant face, les plaques (15) des deux paires s'étendant perpendiculairement l'une par rapport à l'autre.
     
    10. Dispositif de refroidissement (1) selon l'une quelconque des revendications précédentes, dans lequel la paroi interne du corps (7) est semi-sphérique.
     




    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