EP0780163B1 - Procédé et appareil pour traiter la surface interne des échangeurs de chaleur - Google Patents

Procédé et appareil pour traiter la surface interne des échangeurs de chaleur Download PDF

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Publication number
EP0780163B1
EP0780163B1 EP96120590A EP96120590A EP0780163B1 EP 0780163 B1 EP0780163 B1 EP 0780163B1 EP 96120590 A EP96120590 A EP 96120590A EP 96120590 A EP96120590 A EP 96120590A EP 0780163 B1 EP0780163 B1 EP 0780163B1
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EP
European Patent Office
Prior art keywords
treatment
heat exchangers
vessel
liquid
attachments
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.)
Expired - Lifetime
Application number
EP96120590A
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German (de)
English (en)
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EP0780163A1 (fr
Inventor
Günther Krieg
Eberhard Krieg
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.)
E Krieg GmbH
Original Assignee
E Krieg GmbH
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
Priority claimed from DE1995148595 external-priority patent/DE19548595A1/de
Priority claimed from DE1995148594 external-priority patent/DE19548594A1/de
Application filed by E Krieg GmbH filed Critical E Krieg GmbH
Publication of EP0780163A1 publication Critical patent/EP0780163A1/fr
Application granted granted Critical
Publication of EP0780163B1 publication Critical patent/EP0780163B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/08—Spreading liquid or other fluent material by manipulating the work, e.g. tilting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/04—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of rubber; of plastics material; of varnish
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/04—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material

Definitions

  • the invention relates to a method for treating heat exchangers large inner surface with at least one liquid treatment medium by wetting at least one Part of the surface of the heat exchanger by relative immersion in a bath of the treatment liquid in a treatment vessel, Disconnect the heat exchanger from the bath and then Removing residual treatment medium, as well a device for performing the method.
  • centrifugal forces for separating are different Media high forces that are not exerted on sensitive bodies should be.
  • a sensible holder of the heat exchanger their sensitive Parts are protected from undesired deformation can and thereby an effective ejection of liquid Treatment medium from the honeycomb body is possible.
  • the procedure is particularly suitable for vaporizers from Air conditioning systems for motor vehicles, the relatively small compact Body with a very narrow lamellar structure large inner Show surface.
  • Such vaporizers can be used for centrifuging Slings suspended on the load-bearing parts or are supported so that the lamella structure is free from the Contact with other solids.
  • a treatment can advantageously be a chromating treatment of aluminum surfaces of the heat exchanger. It can also clean and / or wash the surface be made, especially as preparatory or subsequent treatments for chromating. It is even possible with the help of the method according to the invention, to paint the surface of heat exchangers, using Another advantage is that by adjusting the viscosity of the paint, the centrifugal force and the spin time Layer thickness of the paint is effectively predetermined and adjusted can be. Such a painting process can connect a completed chromating treatment to smooth the chromated surface of the slats and for example, in the case of evaporators for air conditioning systems of condensed water to facilitate.
  • the Heat exchangers are advantageously used on several at the same time Supported places to evenly the centrifugal forces to distribute.
  • the bracket of the heat exchanger in the idle state of the Spin can be done with play, so that the treatment liquid can reach all required positions.
  • the heat exchanger stops spinning with increasing Contact force at its support points.
  • the invention also relates to a device for carrying it out of the procedure.
  • This device is characterized by a filling and emptying treatment vessel with several um a spin axis rotatable brackets for the heat exchanger, the brackets for the heat exchanger for relative fixed storage of the heat exchanger around the Slingshot axis are formed.
  • the centrifugal axis preferably stands essentially vertical.
  • the treatment vessel with the Brackets for the heat exchanger is advantageous as a centrifuge educated.
  • the brackets are advantageous evenly along the wall of the treatment vessel arranged.
  • the brackets are preferably set up in such a way that that the heat exchanger can be arranged in one position in it which are a free radial leakage of the treatment liquid from the areas of large inner surface enables.
  • the free radial passages run preferably radially between the slats of the slat body.
  • FIG. 1 a treatment device in Figures 1 and 2 1 for treating evaporators of air conditioning systems shown for motor vehicles.
  • the treatment facility has a centrifugal vessel 2 in the form of a large, substantially cylindrical, open pot on top of a closed Has bottom 3 and its closed jacket 4th widens somewhat conically upwards.
  • the centrifuge bowl is accessible from above and with a cover 5 closable housing 6 arranged and in this around his vertical axis rotatably mounted like a centrifuge.
  • Filling and suction lines lead from the housing wall 11 12 and 13 radially over the upper edge 14 of the centrifugal vessel 2 towards the axis of the centrifuge bowl and in the area the axis down to the vessel bottom 3, above which they are in close distance. Through these lines 12 and 13 is the vessel with different treatment media axially from above fillable and emptied.
  • the heat exchanger 16 can be assembled Form are present, parts not to be treated, such as Valve body 17 and connecting lines 18 for exchange medium, are arranged at the top and protrude from the treatment liquid. For these free-standing parts that are exposed to centrifugal forces are sensitive, the brackets 15th special supports 15a.
  • the housing 6 has at the level of the upper edge 14 of the vessel jacket 4 a collecting trough 19 for spun off liquid on, in a through the housing wall 11 drain line 20 flows.
  • the drain pipe is Branch lines, not shown, in the liquid collecting container 21 and liquid storage container 22 guided, one of which is shown.
  • In the liquid collection container 21 can separate washing liquids be initiated.
  • In the liquid storage container treatment media can be recycled separately.
  • the heat exchangers 16 are in the holders 15 of the standing centrifugal vessel 2 attached so that the parts not to be treated over the upper edge 14th the centrifugal vessel 2, but at least above the liquid level 23 of the treatment liquid are arranged to treating surface parts but below the liquid level 23 lie.
  • the housing 6 is then closed the lid is closed, then through a filling line 12 a treatment liquid, e.g. a degreasing Wash water, is fed until the liquid level intended level 23 reached.
  • a treatment liquid e.g. a degreasing Wash water
  • the treatment medium is immediately through a suction line 13 sucked off again over the bottom of the centrifugal vessel 2 and returned to the corresponding storage container 22. Without waiting for further treatment liquid to drip in the suction process is stopped and the spinning process begins.
  • the remaining large amounts of Treatment liquid between the fins of the evaporator are held back against the jacket of the centrifuge bowl thrown out and by its conical widening driven up on the inside of the coat, from where it over the upper edge of the centrifugal vessel 2 into the collecting trough 19 of the housing 6 transferred and get into the drain line 20.
  • the branch line the thrown off Cleaning liquid in the appropriate Storage containers are returned.
  • a painting station 31 has a closable one and evacuable housing 32, several with paint or other treatment liquids refillable storage containers 33, a slingshot 34 and several below the housing 32 arranged collection container 35 for currently not required treatment fluids.
  • a fixed treatment vessel 36 arranged both as Immersion container as well as a centrifugal vessel for collecting thrown off Liquid is provided.
  • the treatment vessel 36 has the shape of a U-shaped groove in vertical section and is ring-shaped.
  • the centrifuge 34 is a centrifuge with a vertical axis of rotation 38 trained.
  • the slingshot 34 has one as a flywheel and counterweight serving turntable 39, the one below the treatment vessel 36 on a drive shaft 40 is stored.
  • the drive for the slingshot is a Electric motor 41 is provided, which is below the housing 32 attached and via an angular gear 42 to the drive shaft 40 is connected.
  • On the turntable 39 is a U-shaped pot 43 mounted and also rotatable. Of the Pot extend seven bridge-shaped radial webs 44 outwardly, protrude the inner edge of the U-shaped groove of the Treatment vessel 36 and dip into the channel from above.
  • the radial webs 44 are on their outer edges 45 with two circumferential Compound rings 46 and 47 connected together and stabilized among themselves.
  • the compound rings 46 and 47 have brackets on the inside between the radial webs 48, the fixed storage of evaporators 49 of air conditioning enable motor vehicles relative to the axis of rotation.
  • the brackets 48 have hooks 50 on their upper side provided, in which the evaporator 49 can be hung.
  • the brackets 48 continue to point obliquely downwards inwards Supports 51, the upper ring 46 and the lower Connect ring 47 together and when exposed to A centrifugal force on the evaporator 49 for the lower edge of the evaporator with line or point contact form.
  • the hooks 50 lie above the intended liquid level and determine the horizontal interface or phase boundary, up to which the evaporators 49 when diving or Floods protrude into the treatment liquid.
  • the liquid level can by at least one overflow 52 on the outer wall of the treatment vessel 36 can be adjusted.
  • a housing cover 53 is by hydraulic linkage, not shown.
  • the painting station can be opened and closed and seals during the spinning process and any parts evacuation from.
  • feedback devices equipped with liquid pumps and filters to return collected treatment fluids, e.g. Paint provided in the reservoir 33.
  • are for different treatment fluids preferably separate line systems, such as feed and return lines as well as pumps etc. are provided for mixing to avoid these liquids. This is especially true for chromating solutions but also for paints and rinsing solutions.
  • Heat exchangers in particular evaporators, set up, wherein the evaporators during the individual treatment steps the holders 48 of the centrifuge 34 remain and the treatment liquids, e.g. Cleaning and degreasing liquids, Chromating liquids, rinsing solutions, liquid paints, especially water-based paints, and the like in succession fed and drained and being after each Treatment or preferably between two treatments a spin cycle is carried out.
  • the treatment liquids e.g. Cleaning and degreasing liquids, Chromating liquids, rinsing solutions, liquid paints, especially water-based paints, and the like in succession fed and drained and being after each Treatment or preferably between two treatments a spin cycle is carried out.
  • the speed and spin time By varying the speed and setting the spin time, excess paint can be ejected until a desired layer thickness of the paint is reached.
  • the speed and spin time also depend on the viscosity of the paint. For a full coating of the lamellar body, for example, a layer thickness in the range of 0.5 ⁇ m ⁇ 10% is sufficient.
  • the lacquered slats of the slat body already feel dry with this thin layer. This makes it possible, if desired, to subject the evaporators to a second painting process immediately after spinning, which may also involve only partial painting of the parts of the fin body or evaporator which are particularly at risk of corrosion. After the last painting, the evaporators are removed from the painting station 31 and passed through an oven in which the paints are baked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Centrifugal Separators (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (17)

  1. Procédé pour le traitement d'échangeurs de chaleur de grandes surfaces internes comprenant au moins un milieu de traitement liquide par mouillage d'au moins une partie de la surface des échangeurs de chaleur par immersion relative dans un bain de liquide de traitement dans un récipient de traitement, par séparation relative des échangeurs de chaleur du bain et élimination suivante du milieu résiduel de traitement par vibration centrifuge des échangeurs de chaleur autour d'un axe de centrifuge, caractérisé en ce que plusieurs échangeurs de chaleur sont traités et centrifugés ensemble et sont maintenus fixes pour ce faire dans leur position relative par rapport à l'axe de centrifuge et en ce que plusieurs traitements, en particulier différents traitements peuvent être effectués les uns après les autres dans le même récipient de traitement et en ce qu'au moins les échangeurs de chaleur sont sensiblement séchés par centrifuge avant le début du traitement suivant.
  2. Procédé selon la revendication 1, caractérisé en ce que la centrifuge s'effectue autour d'axe de centrifuge sensiblement vertical.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'immersion et la centrifuge s'effectuent dans le même récipient.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le traitement comprend un traitement de chromatisation de surfaces d'aluminium de l'échangeur de chaleur, un traitement de lavage et de nettoyage de la surface et/ou un vernissage d'au moins une partie de la surface.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le récipient de traitement reste fixe pendant la centrifuge des échangeurs de chaleur.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que les parties non traitées des échangeurs de chaleur dépassent du niveau de liquide du bain de traitement pendant l'immersion.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le liquide de traitement est amené après le traitement par une conduite dans un récipient de liquide, en particulier dans un réservoir à liquide.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'au moins le vidage du récipient de traitement s'effectue par le bas, en particulier par au moins une sortie prévue dans la zone de fond du récipient de traitement.
  9. Dispositif pour l'exécution du procédé selon l'une des revendications précédentes caractérisé par un récipient de traitement (2, 36) pouvant être rempli et vidé avec plusieurs supports (15, 48) rotatifs autour d'un axe (38) d'une centrifugeuse (34) pour les échangeurs de chaleur (16, 49), les supports (15, 48) étant placés de manière relative par rapport à l'axe de centrifuge pour une fixation fixe des échangeurs de chaleur (16, 49).
  10. Dispositif selon la revendication 9, caractérisé en ce que l'axe de centrifuge (38) est sensiblement vertical.
  11. Dispositif selon l'une des revendications 9 ou 10, caractérisé en ce que les échangeurs de chaleur (16, 49) peuvent être disposés dans leurs supports (15, 48) dans une position qui permet au liquide de traitement de sortir radialement et librement des zones de la grande surface interne.
  12. Dispositif selon l'une des revendications 9 à 11, caractérisé en ce que les supports (15, 48) permettent une disposition des échangeurs de chaleur (16, 49) où des forces de centrifuge plus faibles sont appliquées sur les parties non traitées (17, 18, 55) des échangeurs de chaleur (16) pendant la centrifuge que sur les parties traitées, dans le fait que les parties traitées possèdent une distance radiale plus grande par rapport à l'axe de centrifuge.
  13. Dispositif selon l'une des revendications 9 à 12, caractérisé en ce que les supports (15) présentent des dispositifs d'appui (15a, 51) pour le support centrifuge de parties (17) des échangeurs de chaleur (16) particulièrement sensibles à la force centrifuge.
  14. Dispositif selon l'une des revendications 9 à 13, caractérisé en ce que le récipient de traitement (36) a la forme d'un récipient concentrique à l'axe de centrifuge (38) de préférence sensiblement annulaire qui a sensiblement la forme d'un U, de préférence en coupe verticale.
  15. Dispositif selon l'une des revendications 9 à 14, caractérisé en ce que le récipient de traitement (36) est fixe et que les supports (48) sont disposés rotatifs autour de l'axe de centrifuge (38) dans le récipient de traitement.
  16. Dispositif selon l'une des revendications 14 ou 15, caractérisé en ce que la centrifugeuse (34) présente des ailettes radiales (44) qui dépassent le bord interne du récipient de traitement annluaire (36) et s'engagent dans le récipient (36), les aillettes (44) dans le récipient de traitement en forme de gouttière (36) étant de préférence reliés entre elles et portent des fixations (48) pour les échangeurs de chaleur (49).
  17. Dispositif selon l'une des revendications 10 à 17, caractérisé en ce que les supports (15, 48) sont conçus pour accrocher les échangeurs de chaleur et sont disposés en particulier à une hauteur qui se trouve au-dessus du niveau de liquide du bain de traitement.
EP96120590A 1995-12-23 1996-12-20 Procédé et appareil pour traiter la surface interne des échangeurs de chaleur Expired - Lifetime EP0780163B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19548595 1995-12-23
DE1995148595 DE19548595A1 (de) 1995-12-23 1995-12-23 Verfahren und Vorrichtung zum Behandeln von Wärmetauschern großer innerer Oberfläche
DE1995148594 DE19548594A1 (de) 1995-12-23 1995-12-23 Dreidimensionale Wärmetauscher großer innerer Oberfläche mit einer Lackierung sowie Verfahren und Vorrichtung zum Lackieren der Wärmetauscher
DE19548594 1995-12-23

Publications (2)

Publication Number Publication Date
EP0780163A1 EP0780163A1 (fr) 1997-06-25
EP0780163B1 true EP0780163B1 (fr) 2001-09-12

Family

ID=26021685

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96120589A Expired - Lifetime EP0780162B1 (fr) 1995-12-23 1996-12-20 Echangeur de chaleur ayant une surface interne tridimentionnelle revêtue, procédé et appareil pour revêtir un échangeur de chaleur
EP96120590A Expired - Lifetime EP0780163B1 (fr) 1995-12-23 1996-12-20 Procédé et appareil pour traiter la surface interne des échangeurs de chaleur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP96120589A Expired - Lifetime EP0780162B1 (fr) 1995-12-23 1996-12-20 Echangeur de chaleur ayant une surface interne tridimentionnelle revêtue, procédé et appareil pour revêtir un échangeur de chaleur

Country Status (3)

Country Link
EP (2) EP0780162B1 (fr)
DE (2) DE59609185D1 (fr)
ES (2) ES2160204T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008062705A1 (de) 2008-12-18 2010-06-24 Behr Gmbh & Co. Kg Beschichtungsverfahren und Beschichtungsvorrichtung zum Herstellen eines Bauteils sowie Wärmetauscher und Verwendung des Wärmetauschers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224994A (en) * 1991-01-15 1993-07-06 Westinghouse Air Brake Company Apparatus and method for liquid treatment of article surfaces
JPH06117797A (ja) * 1992-10-01 1994-04-28 Zexel Corp 熱交換器の抗菌処理方法

Also Published As

Publication number Publication date
EP0780162A1 (fr) 1997-06-25
ES2174020T3 (es) 2002-11-01
DE59607674D1 (de) 2001-10-18
ES2160204T3 (es) 2001-11-01
DE59609185D1 (de) 2002-06-13
EP0780162B1 (fr) 2002-05-08
EP0780163A1 (fr) 1997-06-25

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