EP1805470B1 - Heat exchanger, in particular radiator for motor vehicles - Google Patents

Heat exchanger, in particular radiator for motor vehicles Download PDF

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Publication number
EP1805470B1
EP1805470B1 EP05797706A EP05797706A EP1805470B1 EP 1805470 B1 EP1805470 B1 EP 1805470B1 EP 05797706 A EP05797706 A EP 05797706A EP 05797706 A EP05797706 A EP 05797706A EP 1805470 B1 EP1805470 B1 EP 1805470B1
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EP
European Patent Office
Prior art keywords
piston
heat exchanger
channel
sections
conical
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.)
Not-in-force
Application number
EP05797706A
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German (de)
French (fr)
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EP1805470A1 (en
Inventor
Vladyslav Kuniavskyi
Matthias SCHÜLE
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Mahle Behr GmbH and Co KG
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Behr GmbH and Co KG
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Publication of EP1805470A1 publication Critical patent/EP1805470A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • F24D19/0073—Means for changing the flow of the fluid inside a radiator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0276—Draining or purging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/182—Arrangements or mounting of liquid-to-air heat-exchangers with multiple heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Definitions

  • the invention relates to a heat exchanger, in particular a coolant radiator for motor vehicles according to the preamble of claim 1 and the independent claim 2, known by the DE-A-10019029 ,
  • Coolant radiators for motor vehicles are used to cool an internal combustion engine and are connected to a coolant circuit, which consists essentially of a radiator inlet or engine return, a radiator return or engine flow with coolant pump and a bypass with thermostatic valve.
  • a coolant circuit multiple secondary circuits are often connected, z.
  • the individual circuits have different temperature levels and therefore separated from each other in the cooler by separate chambers.
  • the chambers are part of the collector of the radiator and are separated by partitions. When filling or emptying the coolant radiator or the coolant circuit, the individual chambers should communicate with each other, so that a faster and uniform filling without air pockets and also a faster emptying is possible.
  • the DE-A 10019029 suggests that the actuator is designed as an axially adjustable piston between an open and a closed position and that the cross sections of the connecting channel and the piston are formed differently in the region of the connection openings.
  • the piston can thus be brought by axial displacement, which requires only small adjustment forces, in a discharge or filling position, in which communicate all chambers via the connection openings in the connecting channel with each other.
  • the piston can be brought by axial displacement in the closed position, in which all chambers are sealed from each other.
  • the cross sections of the connecting channel and the piston are formed decreasing from a first outermost connection opening to a second outermost connection opening, wherein the first and the second outermost connection opening are opposite to each other and optionally further connection openings are arranged along the connection channel between the outermost connection openings.
  • a heat exchanger in particular coolant radiator of the type mentioned above to improve such that the chambers are sufficiently sealed in the closed state of the actuator against each other and are connected to each other with sufficient cross-section.
  • the connecting channel is designed as a stepped channel and the piston as a stepped piston.
  • annular gaps are formed in the region of the connecting openings, which are sealed against each other in the closed position and in the open position, d. H. communicate with each other after axial displacement of the stepped piston.
  • the piston at three connection openings on three stages which form three annular gaps, which form a contiguous gap after retraction of the stepped piston.
  • the sealing of the annular gaps takes place by means of arranged on the stepped piston O-rings, which slide on the inner wall of the step channel during the axial movement of the stepped piston.
  • At least one connecting opening is arranged in the axial direction of the piston, so that more connecting openings are connectable than annular gaps are present.
  • four connection openings can then be connected to one another with a three-stage piston.
  • portions of the connecting channel and the piston are conical.
  • the piston bears against the conical inner wall of the connecting channel and thus closes the connecting openings - the chambers are thus sealed against each other.
  • the open position which is achieved by axially retracting the conical piston, there is an annular gap between the outer surface of the piston and the inner surface of the connecting channel, which brings the connection openings in fluid communication with each other.
  • sealing rings or sealing ribs are arranged on the circumference of the piston, which improve the seal, without thereby the adjustment forces are increased significantly.
  • the taper is to be chosen so that on the one hand a good seal and on the other hand easy release from the sealing or closed position is possible.
  • the piston whether it is a stepped piston or a conical piston, at its outer end a mounting portion which is inserted into a corresponding closure opening in the collecting box.
  • the attachment portion is a threaded portion on the piston and the closure opening in the collection box a threaded bore. The piston is thus screwed into the thread, whereby at the same time the required axial movement for achieving an open and a closed position is effected.
  • the rotational movement of the piston for axial adjustment can be done via a hexagon socket on the outer end face of the piston.
  • Fig. 1 shows a coolant radiator 1 with an air-cooled radiator block 2.
  • the radiator block 2 consists of cooling tubes 3, in particular flat tubes, between which corrugated fins, not shown, are arranged. Laterally, the radiator block 2 is completed by side panels 4.
  • the cooling pipes 3 open into an upper collecting or coolant box 5 and a lower collecting or coolant box 6.
  • the entry of the coolant takes place via an inlet connection 7 at the upper collecting box 5, and the outlet takes place
  • the coolant radiator 1 is connected to a coolant circuit, not shown, for an internal combustion engine of a motor vehicle and is installed with vertically arranged cooling tubes 3 in the vehicle, ie flows through from top to bottom of the coolant.
  • this coolant radiator 1 further secondary circuits, not shown here, for example, for cooling a charge air cooler or an oil cooler can be connected.
  • Fig. 2 shows the lower collection box 6 without radiator block 2 in a plan view, ie looking in the interior of the collecting tank 6, which has a rectangular plan and is bounded by two longitudinal sides 6a, 6b and two narrow sides 6c, 6d.
  • the entire box 6 is divided by two longitudinal partitions 9, 10 and by a transverse partition 11 in four chambers 12, 13, 14, 15.
  • a connecting channel 16 is arranged, which has four connecting openings 17, 18, 19, 29 which are in fluid communication with the chambers 12, 13, 14, 15.
  • the connection opening 29 is arranged on the front side, ie in the axial direction of the piston, on the connecting channel.
  • the chambers 12, 13 and 14 are connected via coolant connections 20 and 21 with secondary circuits, not shown.
  • Fig. 3 shows a section through the connecting channel 16 in the plane of the transverse partition wall 11 in Fig. 2 ,
  • the connecting channel 16 is of stepped design, ie as a stepped channel with different diameters D0, D1, D2, D3, where D0 ⁇ D1 ⁇ D2 ⁇ D3.
  • the connecting channel 16 thus has four cylindrical sections 22, 23, 24, 28 which are interconnected by steps 25A, 25, 26. At the section 24 connects to the outside a threaded bore 27.
  • Fig. 4 shows a further step channel 16 with an inserted stepped piston 30, which has three cylindrical sections 31, 32, 33, 33A with increasing diameters d1, d2, d3, d4.
  • the piston 30 has at its end a threaded portion 34 which is screwed into the threaded bore 27 of the connecting channel 16.
  • the piston 30 has a flange 35, which serves as a stop when screwing.
  • the single ones Diameter sections 31, 32, 33, 33A are interconnected via chamfered steps 36, 37, 38.
  • On each diameter portion 31, 32, 33, 33A are annular grooves 39 for receiving sealing rings, so-called O-rings 40.
  • the piston 30 is screwed in the position shown to the stop of the flange 35 in the stepped channel and forms with this in the area the connecting openings 17,18, 19 annular gaps 41, which are, however, sealed to each other, the connection opening 29 and the thread 34 by sealing rings 40.
  • the chambers 12, 13, 14, 15 connected via the connection openings 17, 18, 19, 29 and the connecting channel 16, also called connecting chamber are in particular gas-, liquid- and pressure-tight against each other and outwards towards the thread 34 in the valve position shown sealed.
  • Fig. 5 shows the step channel 16 with the stepped piston 30 in the open position, that is, the piston 30 is axially displaced by rotation as a result of the threaded portion 34 to the right, the threaded portion 34 and the flange 35 are in front of the displacement to the outside.
  • a profile 44 for example, a hexagon socket, Phillips, external hexagon or the like is incorporated, so that the piston 30 can be rotated by means of a key and thus moved axially.
  • the piston 30 is sealed to the outside by a sealing ring 40.
  • An anchoring part 45 which consists of two elastically deformable legs 45a, 45b with end locking lugs, which form a stop when the piston is extended, preferably adjoins the inner piston section 31 with the smallest diameter.
  • the annular gaps 41, 42, 43 are interconnected and thus form a continuous annular gap, in which the connection openings 17, 18, 19, 29 open.
  • the chambers 12, 13, 14, 15 connected via the connection openings 17, 18, 19, 29 and the connecting channel 16 are connected to one another in the valve position shown and are further sealed outward from the thread 34. This allows the corresponding chambers communicate with each other.
  • the annular gap 41 is followed inwardly by a further annular chamber 46, via which a fluid connection with the chamber 15 of the collecting tank 6 can be produced.
  • Adjusting the piston 30 in the closed position according to Fig. 4 takes place in that the threaded portion 34 of the piston 30 is screwed into the threaded hole 27.
  • the piston 30 moves in the drawing to the left until the O-rings 40 again come into contact with the inner wall of the step channel 16 and thus again produce a seal between the individual annular gaps 41, 42, 43.
  • Fig. 6 shows a further embodiment of the invention, in the form of a conically shaped connecting channel 50 and a conically shaped piston 51, wherein the connecting openings are again denoted by 17, 18, 19, 29.
  • the connecting channel 50 has a conical section 50a, at the narrowest cross-section of which a cylindrical section 50b connects, which opens via the connecting opening 29 into the chamber 15.
  • another cylindrical section 50c adjoins, in whose outer region an internal thread 50d is incorporated.
  • the piston 51 has a head 51 a, which is formed similar to the previous embodiment, ie with a threaded portion, a flange, an inner profile and a sealing ring 40 which slides on the inner wall of the cylindrical portion 50 c.
  • a conical piston portion 51 b behind the O-ring 40 which abuts fully and over the entire length of the inner wall of the conical portion 50 a of the connecting channel 50.
  • Fig. 7 shows the embodiment according to Fig. 6 with displaced piston 51, ie the piston is unscrewed by the adjustment x from the connecting channel 50, but still sealed by the O-ring 40.
  • a "conical" annular gap 52 has been created with an increasing diameter from inside to outside.
  • the conical piston portion 51 b has on his Unfang a plurality of successively arranged sealing rings 53, which better seal against the inner wall of the conical portion 50a and thus also effective sealing of the connecting openings 17, 18, 19, 29 effect each other in the closed position of the piston 51.
  • the adjustment of the piston 51 in the closed position takes place by screwing the piston head 51 a in the thread 50d to the path x, the piston is again driven to stop. Any tolerance für undergraduatean be compensated by the elasticity of the sealing rings 53.
  • valve arrangement according to the invention can also be used elsewhere.
  • valve arrangement or the heat exchanger according to the invention is suitable for liquid as well as for gaseous fluids.
  • the heat exchanger according to the invention can be used in particular as intercooler, oil cooler, radiator, preferably for air, land, and / or sea vehicles.

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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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a heat exchanger, in particular a radiator for motor vehicles, comprising a black consisting of tubes and ribs and a lower and upper collection chamber, the lower collection chamber having several chambers which are separated from one another by partitions and between which a fluidic connection can be established. If necessary, by means of a displaceable actuator via connection orifices (17, 18, 19) that are located in a connection channel (16). According to the invention, the actuator is configured as a piston (30) that can be displaced axially between an open and a closed position and the cross-sections of the connection channel (16) and the piston (30) taper from the exterior to the interior in the vicinity of the connection orifices (17, 18, 19).

Description

Die Erfindung betrifft einen Wärmeübertrager, insbesondere einen Kühlmittelkühler für Kraftfahrzeuge nach dem Oberbegriff des Patentanspruches 1 und des nebengeordneten Patentanspruchs 2, bekannt durch die DE-A-10019029 .The invention relates to a heat exchanger, in particular a coolant radiator for motor vehicles according to the preamble of claim 1 and the independent claim 2, known by the DE-A-10019029 ,

Kühlmittelkühler für Kraftfahrzeuge dienen der Kühlung eines Verbrennungsmotors und sind mit einem Kühlmittelkreislauf verbunden, der im Wesentlichen aus einem Kühlervorlauf bzw. Motorrücklauf, einem Kühlerrücklauf bzw. Motorvorlauf mit Kühlmittelpumpe sowie einem Bypass mit Thermostatventil besteht. Einem solchen Kühlmittelkreislauf sind vielfach Nebenkreisläufe angeschlossen, z. B. für einen Ladeluftkühler oder einen Ölkühler, wobei die einzelnen Kreisläufe unterschiedliches Temperaturniveau aufweisen und daher im Kühler durch separate Kammern voneinander getrennt werden. Die Kammern sind Teil von Sammelkasten der Kühler und sind durch Trennwände voneinander abgeteilt. Beim Befüllen oder Entleeren des Kühlmittelkühlers bzw. des Kühlmittelkreislaufes sollen die einzelnen Kammern miteinander kommunizieren, damit ein schnelleres und gleichmäßiges Befüllen ohne Lufteinschlüsse und ebenso ein schnelleres Entleeren möglich ist.Coolant radiators for motor vehicles are used to cool an internal combustion engine and are connected to a coolant circuit, which consists essentially of a radiator inlet or engine return, a radiator return or engine flow with coolant pump and a bypass with thermostatic valve. Such a coolant circuit multiple secondary circuits are often connected, z. As for a charge air cooler or an oil cooler, the individual circuits have different temperature levels and therefore separated from each other in the cooler by separate chambers. The chambers are part of the collector of the radiator and are separated by partitions. When filling or emptying the coolant radiator or the coolant circuit, the individual chambers should communicate with each other, so that a faster and uniform filling without air pockets and also a faster emptying is possible.

In der DE-A 100 41 122 wurde daher vorgeschlagen, die einzelnen Kammern eines Sammelkastens durch einen Kanal miteinander zu verbinden, wobei jede Kammer über eine Verbindungsöffnung mit dem Kanalinneren in Fluidverbindung steht. In dem hohlzylindrisch ausgebildeten Kanal ist ein Rohrstutzen mit Verbindungsöffnungen einsetzbar, welche in gleichen Positionen wie die Öffnungen im Verbindungskanal angeordnet sind. Durch Drehung des Rohrstutzens um seine Längsachse können diese Öffnungen einerseits zur Deckung gebracht werden, sodass alle Kammern miteinander kommunizieren, und andererseits durch weitere Drehung verschlossen werden. Nachteilig bei dieser Lösung ist, dass im geschlossenen Zustand die Abdichtung der einzelnen Kammern gegeneinander unzureichend ist, weil diese Dichtung nur über den Spalt zwischen Rohrstutzen und Kanalinnenwand erfolgt. Der Spalt muss daher relativ gering gewählt werden, woraus sich wiederum relativ hohe Verstellkräfte zum Verstellen dieses Stellgliedes ergeben. Zudem ist unter Umständen der Einsatz aufwendig gestalteter Spezialdichtelemente für eine dauerhafte vollständige Dichtheit erforderlich.In the DE-A 100 41 122 It has therefore been proposed to connect the individual chambers of a collecting tank to one another via a channel, wherein each chamber is in fluid communication with the channel interior via a connecting opening. In the hollow cylindrical channel is a Can be used with connecting openings, which are arranged in the same positions as the openings in the connecting channel. By rotation of the pipe socket about its longitudinal axis, these openings can be made to coincide on the one hand, so that all chambers communicate with each other, and on the other hand are closed by further rotation. A disadvantage of this solution is that in the closed state, the sealing of the individual chambers against each other is insufficient, because this seal is made only over the gap between pipe socket and channel inner wall. The gap must therefore be chosen to be relatively low, which in turn results in relatively high adjustment forces for adjusting this actuator. In addition, under certain circumstances, the use of elaborately designed special sealing elements for a permanent complete tightness is required.

Die DE-A 10019029 schlägt vor, dass das Stellglied als axial zwischen einer Offen- und einer Schließstellung verstellbarer Kolben ausgebildet ist und dass die Querschnitte des Verbindungskanals und des Kolbens im Bereich der Verbindungsöffnungen unterschiedlich ausgebildet sind. Der Kolben kann somit durch Axialverschiebung, welche nur geringe Verstellkräfte erfordert, in eine Ablass- bzw. Füllstellung gebracht werden, bei welcher sämtliche Kammern über die Verbindungsöffnungen in dem Verbindungskanal mit einander kommunizieren. Ebenso kann der Kolben durch Axialverschiebung in die Schließstellung gebracht werden, bei welcher sämtliche Kammern gegeneinander abgedichtet sind. Dabei sind die Querschnitte des Verbindungskanals und des Kolbens von einer ersten äußersten Verbindungsöffnung zu einer zweiten äußersten Verbindungsöffnung abnehmend ausgebildet, wobei die erste und die zweite äußerste Verbindungsöffnung einander gegenüber liegen und gegebenenfalls weitere Verbindungsöffnungen entlang des Verbindungskanals zwischen den äußersten Verbindungsöffnungen angeordnet sind.The DE-A 10019029 suggests that the actuator is designed as an axially adjustable piston between an open and a closed position and that the cross sections of the connecting channel and the piston are formed differently in the region of the connection openings. The piston can thus be brought by axial displacement, which requires only small adjustment forces, in a discharge or filling position, in which communicate all chambers via the connection openings in the connecting channel with each other. Likewise, the piston can be brought by axial displacement in the closed position, in which all chambers are sealed from each other. In this case, the cross sections of the connecting channel and the piston are formed decreasing from a first outermost connection opening to a second outermost connection opening, wherein the first and the second outermost connection opening are opposite to each other and optionally further connection openings are arranged along the connection channel between the outermost connection openings.

Es ist Aufgabe der vorliegenden Erfindung, einen Wärmeübertrager, insbesondere Kühlmittelkühler der eingangs genannten Art derart zu verbessern, dass die Kammern bei geschlossenen Zustand des Stellgliedes hinreichend gegeneinander abgedichtet sind und mit hinreichendem Querschnitt miteinander verbindbar sind.It is an object of the present invention, a heat exchanger, in particular coolant radiator of the type mentioned above to improve such that the chambers are sufficiently sealed in the closed state of the actuator against each other and are connected to each other with sufficient cross-section.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 und alternativ des Patentanspruchs 2 gelöst.This object is solved by the features of claim 1 and alternatively of claim 2.

Nach der ersten Ausgestaltung der Erfindung ist der Verbindungskanal als Stufenkanal und der Kolben als Stufenkolben ausgebildet. Durch jede Stufe werden im Bereich der Verbindungsöffnungen Ringspalte gebildet, welche in der Schließstellung gegeneinander abgedichtet sind und in der Offenstellung, d. h. nach Axialverschiebung des Stufenkolbens miteinander kommunizieren. Beispielsweise weist der Kolben bei drei Verbindungsöffnungen drei Stufen auf, die drei Ringspalte bilden, welche nach dem Zurückziehen des Stufenkolbens einen zusammenhängenden Spalt bilden. Vorteilhafterweise erfolgt die Abdichtung der Ringspalte untereinander durch auf dem Stufenkolben angeordnete O-Ringe, die an der Innenwandung des Stufenkanals bei der Axialbewegung der Stufenkolben gleiten.According to the first embodiment of the invention, the connecting channel is designed as a stepped channel and the piston as a stepped piston. Through each step annular gaps are formed in the region of the connecting openings, which are sealed against each other in the closed position and in the open position, d. H. communicate with each other after axial displacement of the stepped piston. For example, the piston at three connection openings on three stages, which form three annular gaps, which form a contiguous gap after retraction of the stepped piston. Advantageously, the sealing of the annular gaps takes place by means of arranged on the stepped piston O-rings, which slide on the inner wall of the step channel during the axial movement of the stepped piston.

Nach einer vorteilhaften Ausgestaltung ist zumindest eine Verbindungsöffnung in Axialrichtung des Kolbens angeordnet, so dass mehr Verbindungsöffnungen verbindbar sind als Ringspalte vorhanden sind. Beispielsweise sind mit einem dreistufigen Kolben dann vier Verbindungsöffnungen miteinander verbindbar.According to an advantageous embodiment, at least one connecting opening is arranged in the axial direction of the piston, so that more connecting openings are connectable than annular gaps are present. For example, four connection openings can then be connected to one another with a three-stage piston.

Nach der zweiten Ausgestaltung der Erfindung sind Abschnitte des Verbindungskanals und des Kolbens konisch ausgebildet. In der Schließstellung liegt der Kolben an der konischen Innenwandung des Verbindungskanals an und verschließt damit die Verbindungsöffnungen - die Kammern sind somit gegeneinander abgedichtet. In der Offenstellung, die durch axiales Zurückziehen des konischen Kolbens erreicht wird, besteht zwischen Außenfläche des Kolbens und Innenfläche des Verbindungskanals ein Ringspalt, der die Verbindungsöffnungen miteinander in Fluidverbindung bringt. Damit können die Kammern miteinander kommunizieren. Vorteilhafterweise sind auf dem Umfang des Kolbens Dichtringe oder Dichtrippen angeordnet, welche die Abdichtung verbessern, ohne dass dadurch die Verstellkräfte nennenswert erhöht werden. Die Konizität ist so zu wählen, dass einerseits eine gute Abdichtung und andererseits ein leichtes Lösen aus der Abdicht- bzw. Schließstellung möglich ist.According to the second embodiment of the invention, portions of the connecting channel and the piston are conical. In the closed position, the piston bears against the conical inner wall of the connecting channel and thus closes the connecting openings - the chambers are thus sealed against each other. In the open position, which is achieved by axially retracting the conical piston, there is an annular gap between the outer surface of the piston and the inner surface of the connecting channel, which brings the connection openings in fluid communication with each other. This allows the chambers to communicate with each other. Advantageously, sealing rings or sealing ribs are arranged on the circumference of the piston, which improve the seal, without thereby the adjustment forces are increased significantly. The taper is to be chosen so that on the one hand a good seal and on the other hand easy release from the sealing or closed position is possible.

In vorteilhafter Ausgestaltung der Erfindung weist der Kolben, sei es ein Stufenkolben oder ein konischer Kolben, an seinem äußeren Ende einen Befestigungsabschnitt auf, der in eine entsprechende Verschlussöffnung im Sammelkasten eingesetzt wird. Vorteilhafterweise ist der Befestigungsabschnitt ein Gewindeabschnitt auf dem Kolben und die Verschlussöffnung im Sammelkasten eine Gewindebohrung. Der Kolben wird somit in das Gewinde eingeschraubt, wodurch gleichzeitig die erforderliche Axialbewegung für das Erreichen einer Offen- und einer Schließestellung bewirkt wird. Die Drehbewegung des Kolbens zur axialen Verstellung kann über einen Innensechskant auf der äußeren Stirnseite des Kolbens erfolgen.In an advantageous embodiment of the invention, the piston, whether it is a stepped piston or a conical piston, at its outer end a mounting portion which is inserted into a corresponding closure opening in the collecting box. Advantageously, the attachment portion is a threaded portion on the piston and the closure opening in the collection box a threaded bore. The piston is thus screwed into the thread, whereby at the same time the required axial movement for achieving an open and a closed position is effected. The rotational movement of the piston for axial adjustment can be done via a hexagon socket on the outer end face of the piston.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im Folgenden genauer beschrieben. Es zeigen

Fig. 1
einen Kühlmittelkühler,
Fig. 2
einen Sammelkasten des Kühlmittelkühlers mit mehreren Kammern,
Fig. 3
einen Schnitt durch einen stufenförmig ausgebildeten Verbindungskanal (so genannten Stufenkanal) mit Verbindungsöffnungen,
Fig. 4
den Stufenkanal mit einem eingesetzten Stufenkolben in Schließstellung,
Fig. 5
den Stufenkanal mit eingesetztem Stufenkolben in Offenstellung,
Fig. 6
einen konisch ausgebildeten Verbindungskanal mit konischem Kolben in Schließstellung und
Fig. 7
den konisch ausgebildeten Verbindungskanal mit konischem Kolben in Offenstellung.
Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it
Fig. 1
a coolant cooler,
Fig. 2
a collection box of the coolant cooler with a plurality of chambers,
Fig. 3
a section through a step-shaped connecting channel (so-called step channel) with connecting openings,
Fig. 4
the step channel with an inserted stepped piston in the closed position,
Fig. 5
the stepped channel with inserted stepped piston in the open position,
Fig. 6
a conical connecting channel with a conical piston in the closed position and
Fig. 7
the conical connecting channel with a conical piston in the open position.

Fig. 1 zeigt einen Kühlmittelkühler 1 mit einem luftgekühlten Kühlerblock 2. Der Kühlerblock 2 besteht aus Kühlrohren 3, insbesondere aus Flachrohren, zwischen denen nicht dargestellte Wellrippen angeordnet sind. Seitlich wird der Kühlerblock 2 durch Seitenteile 4 abgeschlossen. Die Kühlrohre 3 münden in einen oberen Sammel- bzw. Kühlmittelkasten 5 und einen unteren Sammel- bzw. Kühlmittelkasten 6. Der Eintritt des Kühlmittels erfolgt über einen Eintrittsstutzen 7 am oberen Sammelkasten 5, und der Austritt erfolgt über einen Austrittsstutzen 8 am unteren Sammelkasten 6. Der Kühlmittelkühler 1 ist an einen nicht dargestellten Kühlmittelkreislauf für eine Brennkraftmaschine eines Kraftfahrzeuges anschließbar und wird mit senkrecht angeordneten Kühlrohren 3 im Fahrzeug eingebaut, d. h. von oben nach unten vom Kühlmittel durchströmt. An diesen Kühlmittelkühler 1 sind weitere hier nicht dargestellte Nebenkreisläufe, beispielsweise zur Kühlung eines Ladeluftkühlers oder eines Ölkühlers anschließbar. Fig. 1 shows a coolant radiator 1 with an air-cooled radiator block 2. The radiator block 2 consists of cooling tubes 3, in particular flat tubes, between which corrugated fins, not shown, are arranged. Laterally, the radiator block 2 is completed by side panels 4. The cooling pipes 3 open into an upper collecting or coolant box 5 and a lower collecting or coolant box 6. The entry of the coolant takes place via an inlet connection 7 at the upper collecting box 5, and the outlet takes place The coolant radiator 1 is connected to a coolant circuit, not shown, for an internal combustion engine of a motor vehicle and is installed with vertically arranged cooling tubes 3 in the vehicle, ie flows through from top to bottom of the coolant. At this coolant radiator 1 further secondary circuits, not shown here, for example, for cooling a charge air cooler or an oil cooler can be connected.

Fig. 2 zeigt den unteren Sammelkasten 6 ohne Kühlerblock 2 in einer Draufsicht, d. h. mit Blickrichtung in das Innere des Sammelkastens 6, der einen rechteckförmigen Grundriss aufweist und durch zwei Längsseiten 6a, 6b sowie zwei Schmalseiten 6c, 6d begrenzt wird. Der gesamte Kasten 6 ist durch zwei Längstrennwände 9, 10 und durch eine Quertrennwand 11 in vier Kammern 12, 13, 14, 15 unterteilt. Im Bereich der Quertrennwand 11 ist ein Verbindungskanal 16 angeordnet, der vier Verbindungsöffnungen 17, 18, 19, 29 aufweist, welche mit den Kammern 12, 13, 14, 15 in Fluidverbindung stehen. Die Verbindungsöffnung 29 ist dabei stirnseitig, also in Kolbenaxialrichtung, an dem Verbindungskanal angeordnet. Die Kammern 12, 13 und 14 sind über Kühlmittelanschlüsse 20 und 21 mit nicht dargestellten Nebenkreisläufen verbunden. Fig. 2 shows the lower collection box 6 without radiator block 2 in a plan view, ie looking in the interior of the collecting tank 6, which has a rectangular plan and is bounded by two longitudinal sides 6a, 6b and two narrow sides 6c, 6d. The entire box 6 is divided by two longitudinal partitions 9, 10 and by a transverse partition 11 in four chambers 12, 13, 14, 15. In the region of the transverse partition wall 11, a connecting channel 16 is arranged, which has four connecting openings 17, 18, 19, 29 which are in fluid communication with the chambers 12, 13, 14, 15. The connection opening 29 is arranged on the front side, ie in the axial direction of the piston, on the connecting channel. The chambers 12, 13 and 14 are connected via coolant connections 20 and 21 with secondary circuits, not shown.

Fig. 3 zeigt einen Schnitt durch den Verbindungskanal 16 in der Ebene der Quertrennwand 11 in Fig. 2. Der Verbindungskanal 16 ist stufenförmig ausgebildet, d. h. als Stufenkanal mit unterschiedlichen Durchmessern D0, D1, D2, D3, wobei D0 < D1 < D2 < D3. Der Verbindungskanal 16 weist somit vier zylindrische Abschnitte 22, 23, 24, 28 auf, die durch Stufen 25A, 25, 26 miteinander verbunden sind. An den Abschnitt 24 schließt sich nach außen eine Gewindebohrung 27 an. Fig. 3 shows a section through the connecting channel 16 in the plane of the transverse partition wall 11 in Fig. 2 , The connecting channel 16 is of stepped design, ie as a stepped channel with different diameters D0, D1, D2, D3, where D0 <D1 <D2 <D3. The connecting channel 16 thus has four cylindrical sections 22, 23, 24, 28 which are interconnected by steps 25A, 25, 26. At the section 24 connects to the outside a threaded bore 27.

Fig. 4 zeigt einen weiteren Stufenkanal 16 mit einem eingesetzten Stufenkolben 30, welcher drei zylinderische Abschnitte 31, 32, 33, 33A mit steigenden Durchmessern d1, d2, d3, d4 aufweist. Der Kolben 30 weist endseitig einen Gewindeabschnitt 34 auf, welcher in die Gewindebohrung 27 des Verbindungskanals 16 eingeschraubt ist. Stirnseitig weist der Kolben 30 einen Flansch 35 auf, welcher als Anschlag beim Einschrauben dient. Die einzelnen Durchmesserabschnitte 31, 32, 33, 33A sind über angefaste Stufen 36, 37, 38 miteinander verbunden. Auf jedem Durchmesserabschnitt 31, 32, 33, 33A befinden sich Ringnuten 39 zur Aufnahme von Dichtringen, so genannten O-Ringen 40. Der Kolben 30 ist in der dargestellten Position bis zum Anschlag des Flansches 35 in den Stufenkanal eingeschraubt und bildet mit diesem im Bereich der Verbindungsöffnungen 17,18, 19 Ringsspalte 41, die jedoch untereinander, zur Verbindungsöffnung 29 und zum Gewinde 34 durch Dichtringe 40 abgedichtet sind. Insofern sind die über die Verbindungsöffnungen 17, 18, 19, 29 sowie den Verbindungskanal 16, auch Verbindungskammer genannt, verbundenen Kammern 12, 13, 14, 15 in der gezeigten Ventilposition insbesondere gas-, flüssigkeits- und druckdicht gegeneinander und nach außen zum Gewinde 34 abgedichtet. Fig. 4 shows a further step channel 16 with an inserted stepped piston 30, which has three cylindrical sections 31, 32, 33, 33A with increasing diameters d1, d2, d3, d4. The piston 30 has at its end a threaded portion 34 which is screwed into the threaded bore 27 of the connecting channel 16. At the front, the piston 30 has a flange 35, which serves as a stop when screwing. The single ones Diameter sections 31, 32, 33, 33A are interconnected via chamfered steps 36, 37, 38. On each diameter portion 31, 32, 33, 33A are annular grooves 39 for receiving sealing rings, so-called O-rings 40. The piston 30 is screwed in the position shown to the stop of the flange 35 in the stepped channel and forms with this in the area the connecting openings 17,18, 19 annular gaps 41, which are, however, sealed to each other, the connection opening 29 and the thread 34 by sealing rings 40. In this respect, the chambers 12, 13, 14, 15 connected via the connection openings 17, 18, 19, 29 and the connecting channel 16, also called connecting chamber, are in particular gas-, liquid- and pressure-tight against each other and outwards towards the thread 34 in the valve position shown sealed.

Fig. 5 zeigt den Stufenkanal 16 mit dem Stufenkolben 30 in Offenstellung, d. h. der Kolben 30 ist durch Drehen in Folge des Gewindeabschnittes 34 axial nach rechts verschoben, der Gewindeabschnitt 34 und der Flansch 35 stehen um den Verstellweg s nach außen vor. In den Flansch 35 bzw. den Kopf des Kolbens 30 ist ein Profil 44, beispielsweise ein Innensechskant, Kreuzschlitz, Außensechskant oder dergleichen eingearbeitet, sodass der Kolben 30 mittels eines Schlüssels gedreht und damit axial verschoben werden kann. Auch bei dieser ausgefahrenen Position ist der Kolben 30 nach außen durch einen Dichtring 40 abgedichtet. An den innen liegenden Kolbenabschnitt 31 mit dem geringsten Durchmesser schließt sich bevorzugt ein Verankerungsteil 45 an, welches aus zwei elastisch verformbaren Schenkeln 45a, 45b mit endseitigen Rastnasen besteht, welche einen Anschlag beim Ausfahren des Kolbens bilden. In der dargestellten Offenstellung des Kolbens 30 sind die Ringsspalte 41, 42, 43 untereinander verbunden und bilden somit einen durchgehenden Ringspalt, in welchen die Verbindungsöffnungen 17, 18, 19, 29 münden. Insofern sind die über die Verbindungsöffnungen 17, 18, 19, 29 sowie den Verbindungskanal 16 verbundenen Kammern 12, 13, 14, 15 in der gezeigten Ventilposition untereinander verbunden und nach außen zum Gewinde 34 weiterhin abgedichtet. Damit können die entsprechenden Kammern miteinander kommunizieren. An den Ringspalt 41 schließt sich nach innen eine weitere Ringkammer 46 an, über welche eine Fluidverbindung mit der Kammer 15 des Sammelkastens 6 herstellbar ist. Fig. 5 shows the step channel 16 with the stepped piston 30 in the open position, that is, the piston 30 is axially displaced by rotation as a result of the threaded portion 34 to the right, the threaded portion 34 and the flange 35 are in front of the displacement to the outside. In the flange 35 and the head of the piston 30, a profile 44, for example, a hexagon socket, Phillips, external hexagon or the like is incorporated, so that the piston 30 can be rotated by means of a key and thus moved axially. Also in this extended position, the piston 30 is sealed to the outside by a sealing ring 40. An anchoring part 45, which consists of two elastically deformable legs 45a, 45b with end locking lugs, which form a stop when the piston is extended, preferably adjoins the inner piston section 31 with the smallest diameter. In the illustrated open position of the piston 30, the annular gaps 41, 42, 43 are interconnected and thus form a continuous annular gap, in which the connection openings 17, 18, 19, 29 open. In this respect, the chambers 12, 13, 14, 15 connected via the connection openings 17, 18, 19, 29 and the connecting channel 16 are connected to one another in the valve position shown and are further sealed outward from the thread 34. This allows the corresponding chambers communicate with each other. The annular gap 41 is followed inwardly by a further annular chamber 46, via which a fluid connection with the chamber 15 of the collecting tank 6 can be produced.

Das Verstellen des Kolbens 30 in die Schließposition gemäß Fig. 4 erfolgt dadurch, dass der Gewindeabschnitt 34 des Kolbens 30 in das Gewindeloch 27 eingeschraubt wird. Dabei bewegt sich der Kolben 30 in der Zeichnung nach links, bis die O-Ringe 40 wieder in Kontakt mit der Innenwand des Stufenkanals 16 treten und damit wieder eine Abdichtung zwischen den einzelnen Ringspalten 41, 42, 43 herstellen.Adjusting the piston 30 in the closed position according to Fig. 4 takes place in that the threaded portion 34 of the piston 30 is screwed into the threaded hole 27. In this case, the piston 30 moves in the drawing to the left until the O-rings 40 again come into contact with the inner wall of the step channel 16 and thus again produce a seal between the individual annular gaps 41, 42, 43.

Fig. 6 zeigt ein weiteres Ausführungsbeispiel der Erfindung, und zwar in Form eines konisch ausgebildeten Verbindungskanals 50 sowie eines konisch ausgebildeten Kolbens 51, wobei die Verbindungsöffnungen wiederum mit 17, 18, 19, 29 bezeichnet sind. Der Verbindungskanal 50 weist einen konischen Abschnitt 50a auf, an dessen engsten Querschnitt sich ein zylindrischer Abschnitt 50b anschließt, welcher über die Verbindungsöffnung 29 in die Kammer 15 mündet. Auf der Seite des größten Querschnittes des konischen Abschnittes 50a schließt sich ein weiterer zylindrischer Abschnitt 50c an, in dessen äußeren Bereich ein Innengewinde 50d eingearbeitet ist. Der Kolben 51 weist einen Kopf 51 a auf, der ähnlich wie im vorherigen Ausführungsbeispiel ausgebildet ist, d. h. mit einem Gewindeabschnitt, einem Flansch, einem Innenprofil sowie einem Dichtring 40, der auf der Innenwandung des zylindrischen Abschnittes 50c gleitet. An den Kopf 51 a des Kolbens schließt sich hinter dem O-Ring 40 ein konischer Kolbenabschnitt 51 b an, der vollumfänglich und über die gesamte Länge an der Innenwandung des konischen Abschnittes 50a des Verbindungskanals 50 anliegt. Damit sind die Verbindungsöffnungen 17, 18, 19, 29 verschlossen und die damit verbundenen Kammern untereinander getrennt. Fig. 6 shows a further embodiment of the invention, in the form of a conically shaped connecting channel 50 and a conically shaped piston 51, wherein the connecting openings are again denoted by 17, 18, 19, 29. The connecting channel 50 has a conical section 50a, at the narrowest cross-section of which a cylindrical section 50b connects, which opens via the connecting opening 29 into the chamber 15. On the side of the largest cross section of the conical section 50a, another cylindrical section 50c adjoins, in whose outer region an internal thread 50d is incorporated. The piston 51 has a head 51 a, which is formed similar to the previous embodiment, ie with a threaded portion, a flange, an inner profile and a sealing ring 40 which slides on the inner wall of the cylindrical portion 50 c. To the head 51 a of the piston is followed by a conical piston portion 51 b behind the O-ring 40, which abuts fully and over the entire length of the inner wall of the conical portion 50 a of the connecting channel 50. Thus, the connection openings 17, 18, 19, 29 are closed and the associated chambers separated from each other.

Fig. 7 zeigt das Ausführungsbeispiel gemäß Fig. 6 mit verschobenem Kolben 51, d. h. der Kolben ist um den Verstellweg x aus dem Verbindungskanal 50 herausgeschraubt, aber immer noch durch den O-Ring 40 abgedichtet. Zwischen dem konischen Abschnitt 50a und dem konischen Teil 51 b des Kolbens 51 ist ein "konischer" Ringspalt 52 mit von innen nach außen zunehmendem Durchmesser entstanden. Dadurch können die Verbindungsöffnungen 17, 18, 19, 29 miteinander kommunizieren, d. h. ebenso die ihnen zugeordneten Kammern. Der konische Kolbenabschnitt 51 b weist auf seinem Unfang mehrere hintereinander angeordnete Dichtringe 53 auf, die ih n gegenüber der Innenwand des konischen Abschnittes 50a besser abdichten und damit auch eine wirksame Abdichtung der Verbindungsöffnungen 17, 18, 19, 29 untereinander in der Schließstellung des Kolbens 51 bewirken. Das Verstellen des Kolbens 51 in die Schließstellung erfolgt durch Eindrehen des Kolbenkopfes 51 a in das Gewinde 50d um den Weg x, wobei der Kolben wiederum auf Anschlag gefahren wird. Eventuelle Toleranzüberscheidungan werden durch die Elastizität der Dichtringe 53 ausgeglichen. Fig. 7 shows the embodiment according to Fig. 6 with displaced piston 51, ie the piston is unscrewed by the adjustment x from the connecting channel 50, but still sealed by the O-ring 40. Between the conical portion 50 a and the conical portion 51 b of the piston 51, a "conical" annular gap 52 has been created with an increasing diameter from inside to outside. As a result, the connection openings 17, 18, 19, 29 can communicate with one another, ie also the chambers assigned to them. The conical piston portion 51 b has on his Unfang a plurality of successively arranged sealing rings 53, which better seal against the inner wall of the conical portion 50a and thus also effective sealing of the connecting openings 17, 18, 19, 29 effect each other in the closed position of the piston 51. The adjustment of the piston 51 in the closed position takes place by screwing the piston head 51 a in the thread 50d to the path x, the piston is again driven to stop. Any tolerance Überüberan be compensated by the elasticity of the sealing rings 53.

Die vorliegende Erfindung wurde am Beispiel eines Wärmeübertragers beschrieben. Es wird jedoch darauf hingewiesen, dass die erfindungsgemäße Ventilanordnung auch anderweitig einsetzbar ist. Insbesondere ist die Ventilanordnung beziehungsweise der erfindungsgemäße Wärmeübertrager für flüssige sowie für gasförmige Fluide geeignet. Der erfindungsgemäße Wärmeübertrager ist insbesondere als Ladeluftkühler, Ölkühler, Heizkörper, bevorzugt für Luft-, Land-, und/oder Seefahrzeuge einsetzbar.The present invention has been described using the example of a heat exchanger. It should be noted, however, that the valve arrangement according to the invention can also be used elsewhere. In particular, the valve arrangement or the heat exchanger according to the invention is suitable for liquid as well as for gaseous fluids. The heat exchanger according to the invention can be used in particular as intercooler, oil cooler, radiator, preferably for air, land, and / or sea vehicles.

Bezugszahlenreference numerals

11
KühlmittelkühlerCoolant radiator
22
Kühlerblockradiator core
33
Flachrohreflat tubes
44
Seitenteilside panel
55
oberer Sammelkastenupper collection box
66
unterer Sammelkastenlower collection box
77
Eintrittsstutzeninlet connection
88th
Austrittsstutzenoutlet connection
99
LängstrennwandLongitudinal partition
1010
LängstrennwandLongitudinal partition
1111
Quertrennwandtransverse partition
1212
Kammerchamber
1313
Kammerchamber
1414
Kammerchamber
1515
Kammerchamber
1616
Verbindungskanalconnecting channel
1717
Verbindungsöffnungconnecting opening
1818
Verbindungsöffnungconnecting opening
1919
Verbindungsöffnungconnecting opening
2020
KühlmittelanschlussCoolant connection
2121
KühlmittelanschlussCoolant connection
2222
Stufenabschnitt (D1)Step section (D1)
2323
Stufenabschnitt (D2)Step section (D2)
2424
Stufenabschnitt (D3)Step section (D3)
2525
Stufestep
25A25A
Stufestep
2626
Stufestep
2727
Gewindebohrungthreaded hole
2828
Dichtungsabschnittsealing section
2929
Verbindungsöffnungconnecting opening
3030
Stufenkolbenstepped piston
3131
Kolbenabschnitt (d1)Piston section (d1)
3232
Kolbenabschnitt (d2)Piston section (d2)
3333
Kolbenabschnitt (d3)Piston section (d3)
33A33A
Kolbenabschnitt (d4)Piston section (d4)
3434
Gewindeabschnittthreaded portion
3535
Flanschflange
3636
Stufestep
3737
Stufestep
3838
Stufestep
3939
Ringnutring groove
4040
Dichtringseal
4141
Ringspaltannular gap
4242
Ringspaltannular gap
4343
Ringspaltannular gap
5050
Verbindungskanal (konisch)Connecting channel (conical)
50a50a
konischer Abschnittconical section
50b50b
zylindrischer Abschnitt, innencylindrical section, inside
50c50c
zylindrischer Abschnitt, außencylindrical section, outside
50d50d
Innengewindeinner thread
5151
Kolbenpiston
51a51a
Kopfhead
51b51b
konischer Abschnittconical section
5252
Ringspalt (konisch)Annular gap (conical)
5353
Dichtringeseals

Claims (7)

  1. A heat exchanger, in particular a radiator for motor vehicles, comprising one or more header boxes (5, 6), with at least one header box (6) comprising several chambers (1.2, 13, 14, 15) which are divided from each other by partitions (9, 10, 11) and between which a fluid connection can be established as needed by means of a movably actuator via connecting openings, which are arranged in particular in a connecting channel, with the actuator being designed as a piston (30, 51) which can be axially adjusted between an open position and a closed position, and the cross-sections of the connecting chancels (16, 50) as well as of the piston (30, 51) being different in the regions of the connecting opening (17, 18, 19), in particular decreasing from a first outermost connecting opening toward a second outermost connecting opining, and the connecting channel being designed as a stepped channel (16, 22, 23, 24) and the piston being designed as a stepped piston (30, 31, 32, 33), characterized in that the stepped channel (16) in the region of the connecting opening (17, 18, 19) comprises chambers (22, 23, 24) having differing cross-sections (D1, D2, D3) and the stepped piston (30) comprises piston section (31, 32, 33) having differing cross-sections (d1, d2, d3), wherein between the chambers (22, 23, 24) and the piston sections (31, 32, 33) annular gaps (41, 42, 43) remain, which in the closed position are sealed among each other and in the open position forum spaces that communicate with each other.
  2. A heat exchanger, in particular a radiator for motor vehicles, comprising once or more header boxes (5, 6), with at least one header box (6) comprising several chambers (12, 13, 14, 15) which are divided from each other by partitions (9, 10, 11) and between which a fluid connection can be established as needed by means of a movable actuator via connecting openings, which are arrange in particular in a connecting channel, with the actuator being designed as a piston (30, 51) which can be axially adjusted between an open position and a closed position and the cross-sections of the connecting channels (16, 50) as well as of the piston (30, 51) being different in the legion of the connecting openings (17, 18, 19), in particular decreasing from a first outermost connecting opening toward a second outermost connecting opening, characterized in that the connecting channel (50) and the piston (51) have respective conical sections (50a, 52b) and a plurality of sealing rings (53) are arranged can the conical piston sections (51b).
  3. The heat exchanger according to claim 1 or 2, characterized in that the connecting channel (16, 50) has a closing opening (27, 50d) which is arranged on the outside and receives a fastening section (34, 51a) of the piston (30, 51).
  4. The heat exchanger according to claim 1, 2 or 3, characterized in that the connecting channel has an inflow and/or outflow opening (29, 50d) arranged in the interior (15) of the header box (6).
  5. The heat exchanger according to claim 1 or according to either claim 3 or 4, provided these are dependant on claim 1, characterized in that the annular gaps (41, 42, 43) are scaled by stealing rings (40) arranged on the stepped piston (30).
  6. The heat exchanger according to claim 2 or according to either claim 3 or 4, provided these are dependent on claim 2, characterized in that the conical piston section (51b) of the piston (51) is seated against the conical section (50a) of the connecting channel (51) in the closed position and exposes a conical annular gap (52) in the open position.
  7. The heat exchanger according to claim 3, characterized in that the closing opening is designed as a threaded bore (27, 50d) and the fastening section is designed as a threaded section (34, 51a).
EP05797706A 2004-10-14 2005-10-12 Heat exchanger, in particular radiator for motor vehicles Not-in-force EP1805470B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004050159A DE102004050159A1 (en) 2004-10-14 2004-10-14 Heat exchanger, in particular coolant radiator for motor vehicles
PCT/EP2005/010978 WO2006042680A1 (en) 2004-10-14 2005-10-12 Heat exchanger, in particular radiator for motor vehicles

Publications (2)

Publication Number Publication Date
EP1805470A1 EP1805470A1 (en) 2007-07-11
EP1805470B1 true EP1805470B1 (en) 2012-04-25

Family

ID=35695521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05797706A Not-in-force EP1805470B1 (en) 2004-10-14 2005-10-12 Heat exchanger, in particular radiator for motor vehicles

Country Status (5)

Country Link
US (1) US8210244B2 (en)
EP (1) EP1805470B1 (en)
AT (1) ATE555359T1 (en)
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ATE555359T1 (en) 2012-05-15
US8210244B2 (en) 2012-07-03
DE102004050159A1 (en) 2006-04-27
WO2006042680A1 (en) 2006-04-27
US20080029253A1 (en) 2008-02-07
EP1805470A1 (en) 2007-07-11

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