EP1467170A2 - Fitting for heat exchanger , more particularly for automotive vehicle - Google Patents

Abstract

The radiator header (5) connector stub for a motor vehicle internal combustion engine cooling system has a first end with a circular cross section and a second end with a connecting section between the ends. The connecting section transforms between the different end cross sections and the axis of the first end opening is laterally offset to that of the other end. The spigot cross section flow line can define a set angle with respect to the parallel opening axes.

Description

The present invention relates to a connection device for a heat exchanger, in particular for a motor vehicle. Such heat exchangers are provided in motor vehicles to maintain the temperature in the Vehicle interior to regulate, that is, to heat or cool.

A refrigerant flows through the heat exchanger and through it Heat exchangers passing through the air is heated or in the case of an evaporator cooled. Because of this, feeders and discharges are for the refrigerant into the heat exchanger or out of the heat exchanger Be provided to the gaseous or liquid medium or dissipate.

The supply line or discharge for the refrigerant are connection devices, such as clutches, necessary. The general problem arises that such connection devices or couplings for space reduction should be arranged as close to each other as possible.

The present invention is therefore the object of the installation the connection devices to improve.

This is inventively by a connection device for a device for the exchange of heat, in particular for motor vehicles, achieved, which has a first section with a first predetermined cross section, a second section with a second, from this first section different cross section and a transition section, which connecting this first and this second section has.

In this case, the central axis of the second section relative to the central axis of the first section by a predetermined distance or offset angle added.

This means that the straight, geometric connecting line between the central axis of the first section and the central axis of the second section a predetermined angle to the central axis of the first or the second section. Below the central axis becomes the axis understood perpendicular to the cross-sectional area of that section stands and through the geometric center of the cross-sectional area runs. The straight geometric connecting line will be referred to explained on the figures.

A first section is understood to mean the area that either with the device for the exchange of heat in direct connection is or away from the device for exchanging heat is. Under the second section, the section is understood inversely, which either faces away from the heat exchange device is or in direct connection with the device for replacement of heat.

The transition section is preferably a transition area, most preferably the cross sections of the first and second section into each other.

The predetermined offset angle will become more specific with reference to the figures explained.

In a preferred embodiment, the offset angle is between 5 ° and 85 °, preferably between 5 ° and 55 °, and more preferably between 15 ° and 30 °.

In a further preferred embodiment, the cross-sectional area remains or the flow cross-section substantially over the entire length of Connection device constant. The cross-sectional area is the area the connection device understood, which in each case perpendicular to the Main expansion direction of the connection device is. Under one in Maintaining constant is understood to mean that the cross-sectional area or the flow cross-section over the length of the connection direction not more than 150%, preferably not more than 100% and especially preferably by no more than 50% changes.

In a further preferred embodiment, the second end-side Section has a cross-section selected from a group which elliptical, circular, rectangular, polygonal cross sections and has mixed forms of such cross-sections. In such a Mixed form could be, for example, a rectangular cross-section act with more or less rounded corners.

In a further preferred embodiment, the connection device a length of 20 mm to 90 mm, preferably from 30 mm to 80 mm and more preferably from 30 mm to 45 mm. In a further preferred Embodiment, the connection device has a connection device on, by means of this connection means more devices to be able to connect to the connection device. It can it is, for example, a bead with respect to the connection device act broadened diameter.

In a further preferred embodiment, at least the first one Section and / or the second section a connection device, in particular a coupling, for connecting other facilities. at this connection device can also be a flange, to which a further pipe or a further connection device is coupled can be. In this case, the relevant section may have a coupling region, a stop, a bead, a connecting area and / or have a pass range.

The present invention further relates to an apparatus for Exchanging heat, which is a variety of flow devices, through which a medium can flow, and at least two Distribution and / or collection devices, which have end sections the flow device are connected such that the medium between the flow-through facilities and the distribution and / or collection facilities can flow. In addition, the device has to exchange of heat at least one connection device according to the invention on.

Preferably, the inventive device for the exchange of Heat two connection devices on. These are the one Connecting device to a supply for the refrigerant or in general for a liquid medium in the device for the exchange of heat and at the other connection means to a drain for the liquid Medium. Preferably, the two connection devices are adjacent arranged and in particular arranged side by side so that the shorter diameter of the elliptical two sections substantially lie on a line and the longer diameters are laterally separated from each other offset and are substantially parallel to each other. It is, however Here also different forms possible, such as a not possible parallel arrangement of each longer diameter of the ellipses. By This arrangement can be achieved that the connection device more accessible, such as for connecting a clutch.

The connection device according to the invention is preferred for connection of at least two flow paths for a device for replacement used by heat.

The present invention further relates to a process for the preparation a connection device according to the invention. According to the invention the connection device made of a single piece of pipe. there the connection device can be manufactured in particular from sheet metal, wherein the manufacturing in a subsequent composite tool with preferably several drawing, forming and calibration stages is performed. It is preferred the device produced by a deep-drawing process in several stages. Preference is given in a first process step with the help of Ziehringen made a tubular member in substantially circular cross-sections. Subsequently, in a further method step, but not exclusively, by one-sided compression of the circular Cross section deviating cross sections and / or the lateral offset generated.

Further advantages and embodiments of the invention will become apparent the attached figures.

Fig. 1

eine Vorrichtung zum Austausch von Wärme mit einer erfindungsgemäßen Anschlusseinrichtung;

Fig. 2

eine Draufsicht auf die Vorrichtung aus Fig. 1;

Fig. 3

eine Seitenansicht der Vorrichtung aus Fig. 1,

Fig. 4

eine Detailansicht der Vorrichtung aus Fig. 1;

Fig. 5

einen Schnitt entlang der Linie A-A in Fig. 1;

Fig. 6

eine perspektivische Ansicht der Vorrichtung aus Fig. 1;

Fig. 7

eine Querschnittsdarstellung der erfindungsgemäßen Anschlusseinrichtung in einer Ansicht;

Fig. 8

eine Querschnittsdarstellung der erfindungsgemäßen Anschlusseinrichtung in einer weiter Betrachtung;

Fig. 9

eine Draufsicht auf die erfindungsgemäße Anschlusseinrichtung;

Fig. 10

eine weitere Darstellung der erfindungsgemäßen Anschlusseinrichtung; und

Fig. 11

eine perspektivische Darstellung der erfindungsgemäßen Anschlusseinrichtung.

Show:

Fig. 1

a device for exchanging heat with a connection device according to the invention;

Fig. 2

a plan view of the device of Fig. 1;

Fig. 3

a side view of the device of Fig. 1,

Fig. 4

a detailed view of the device of Fig. 1;

Fig. 5

a section along the line AA in Fig. 1;

Fig. 6

a perspective view of the device of Fig. 1;

Fig. 7

a cross-sectional view of the connecting device according to the invention in a view;

Fig. 8

a cross-sectional view of the connection device according to the invention in a further consideration;

Fig. 9

a plan view of the connection device according to the invention;

Fig. 10

a further illustration of the connection device according to the invention; and

Fig. 11

a perspective view of the connection device according to the invention.

Fig. 1 shows a device 1 for the exchange of heat. It refers reference numeral 2 refers to a plurality of flow-through devices, through which a refrigerant can flow. Preferred, but not exclusively, these are flat tubes, which are essentially are arranged parallel to each other.

At the upper and lower ends of these flow devices or Flat tubes are collecting and distributing devices 4 and 5 arranged. In this case, the upper collecting and distributing device 5 has a tapered Area 5a, that is, an area in which the diameter this distribution device 5 in the drawing from left to decreases to the right. This is done, for example, to reduce the pressure drop / increase, which occurs in a uniform over the inlets and outlets pipe balance.

Between the individual flow devices 2, devices, such as corrugated fins 8, be arranged, which heat exchange promote with the air flowing through.

Reference numeral 6a relates to a connection device according to the invention, which attached to the collecting and / or distribution device 5 is. Another connection device 6b is (not visible) behind the connection device 6a.

The heat exchange device has a width b of 100 to 300 mm, preferably from 150 to 250 mm and more preferably from 160 up to 210 mm.

The length I of the device is between 150 and 350 mm, preferably between 200 and 300 mm and more preferably between 210 and 250 mm.

Fig. 2 shows a plan view of the device of Fig. 1, that is one View from the top of the collection and / or distribution facility 5. In this Embodiment, the two terminal devices 6a and 6b from each other a distance a of between 10 and 40 mm, preferably between 20 and 40 mm and more preferably between 30 and 35 mm.

The distance between the connection devices is the shortest distance a the respective geometric center axes of the cross-sectional areas understood.

Fig. 3 shows a side view of the device of Fig. 1. It relates the reference numeral 2 again to the flow devices and the Reference numeral 4 to the lower collecting and / or distribution device.

Fig. 4 shows a detailed view of the upper collecting and / or distribution device 5. In particular, the tapered area comes 5a of the collection and / or distribution device 5 for expression.

FIG. 5 shows a detailed view of the connection devices 6b and 6a Fig. 1 and 2, wherein in particular the elliptical end portions the connection devices are shown.

Fig. 6 shows a perspective view of the device for replacement of heat with the connection means 6a and 6b of the upper header and Distribution device 5.

Fig. 7 shows a connection device according to the invention in a first Cross-sectional view.

Reference numeral 11 refers to a first end portion the connection device 6a. The connection device 6b is opposite to the Connection device 6a designed similar, so that their exact description is omitted here.

Reference numeral 15 denotes a second end portion the connection device according to the invention. This section points in the present embodiment an elliptical cross-section, wherein in Fig. 7 is a view of the shorter half-axis of this elliptical Cross section is shown. The reference numeral 13 denotes a transition section, within which the first end-side section into a second end-side section passes. In the present embodiment This transition section 13 tapers only on one side.

The reference numeral 16 denotes a connection means such as a flange, with which other means with the connection device can be connected.

The reference signs h1 and h2 indicate the lengths of the first or second end section.

The angle α denotes the offset angle by which the second end Section 15 relative to the first end-side section 11 laterally is offset. This angle is between 0 ° and 85 °, preferably between 50 ° and 55 °, and more preferably between 10 ° and 30 °.

The letter v denotes the straight geometric connecting line between the central axes. The beginning and end points of the straight geometric Connecting line are located at the transition portion facing Ends of the h1 and h2 routes.

The connection device has a length 11 between 10 and 80 mm, preferably between 20 and 60 mm and more preferably between 25 and 40 mm up. The second end portion with the elliptical preferably Cross section has a shorter inner diameter of 5 to 30 mm, preferably from 7 to 20 mm and more preferably in the range of 9 mm on.

The reference numeral 16 refers to a connecting device, with which the connection can be connected to other facilities. This may be, for example, a bead, a bead or the like act.

Fig. 8 shows a connection device according to the invention in a further Cross-sectional view along the line B - B of FIG. 7, that is, this Representation was rotated 90 ° with respect to the illustration of FIG. 7. Conversely, FIG. 7 shows a representation from FIG. 8 along the line A - A. It can be seen that in this illustration, the diameter of the first Section has not changed from the first section in Fig. 7. This means that in the present embodiment, the first section a having substantially circular diameter.

As the lower section 2, however, this time is a look at the long diameter of the substantially elliptical cross-section shown. The long Inner diameter is between 10 and 50 mm, preferably between 15 and 35 mm, and more preferably between 20 and 26 mm.

The inner diameter of the first section is between 10 and 40 mm, preferably between 15 and 30 mm and more preferably between 16 and 20 mm.

9 shows a plan view of the connection device according to the invention. In particular, the first section comes with a substantially circular Diameter and the second section with a substantially elliptical Diameter to advantage. It can also be seen that the second section is offset laterally relative to the first section.

10 shows an overall view of the connection device according to the invention. The illustration shows a view of the longer diameter the substantially elliptical second portion.

Finally, FIG. 11 is an overall perspective view of the invention Connection device shown, in which in particular also the transition section between the first section with substantially circular cross section and the second portion with substantially elliptical cross-section comes to bear.

Claims (19)

Connection device for a device for exchanging heat, in particular for a motor vehicle, having a first end-side section with a substantially circular cross-section, a second end-side section and a transition section, which is arranged between the first section and the second section, characterized in that in the transition section, the cross section of the first section merges into the cross section of the second section, and the central axis of the first section is laterally offset from the central axis of the second section by a predetermined distance. Connecting device, in particular according to claim 1, characterized in that the geometric connecting line between the central axes of the first and second end portion opposite to the substantially parallel central axes of the first and the second end portion assumes a predetermined angle. Connecting device, in particular according to at least one of the preceding claims, characterized in that the angle between 5 and 55 °, preferably between 10 and 75 ° and particularly preferably between 10 and 30 °. Connection device, in particular according to at least one of the preceding claims, characterized in that the cross-sectional area of the device remains substantially constant over the length of the connection device. Connecting device, in particular according to one of the preceding claims, characterized in that the second end-side portion has a cross section which is selected from a group which includes elliptical sections, rectangular cross sections, polygonal cross sections and hybrid forms of these cross sections. Connection device, in particular according to at least one of the preceding claims, characterized in that the connection device has an overall length of 20 mm to 90 mm, preferably 30 mm to 80 mm and particularly preferably from 30 mm to 60 mm. Connection device, in particular according to at least one of the preceding claims, characterized in that on at least one end-side section, a connecting device, in particular a bead, is provided in order to enable or facilitate the connection of further elements thereto. Connection device, in particular according to at least one of the preceding claims, characterized in that at least the first end-side section and / or the second end-side section have a connection device, in particular a coupling for the connection of further devices. Connecting device, in particular according to at least one of the preceding claims, characterized in that the first end-side portion has a circular cross section with a diameter which is between 10 and 40 mm, preferably between 12 and 30 mm and particularly preferably between 15 and 22 mm. Connection device, in particular according to at least one of the preceding claims, characterized in that the second end-side section has an elliptical cross-section, wherein the longer diameter between 10 and 40 mm, preferably between 15 and 30 mm and particularly preferably between 19 and 26 mm. Connecting device, in particular according to at least one of the preceding claims, characterized in that the second end-side section has an elliptical cross-section, wherein the shorter diameter is between 5 and 25 mm, preferably between 7 and 18 mm and particularly preferably about 9 mm. Connecting device, in particular according to at least one of the preceding claims, characterized in that the second end-side section has a substantially elliptical cross-section and the longer outer diameter between 20 and 40 mm, preferably between 25 and 35 mm and particularly preferably between 27 and 31 mm. Connection device according to at least one of the preceding Claims for connecting at least two flow paths for a device for exchanging heat. Apparatus for exchanging heat with a plurality of flow means for a medium and two distribution and / or collection means arranged at the respective end portions of the flow means, characterized in that the apparatus comprises at least one connection means according to at least one of the preceding claims. Apparatus according to claim 12, characterized in that the device comprises two connection devices according to at least one of the preceding claims and these connection means are arranged at a predetermined distance side by side. Device, in particular according to at least one of the preceding claims, characterized in that the connection means are arranged side by side such that the smaller diameter lying substantially on a line and the longer diameter laterally offset from each other are substantially parallel. Method for producing a connection device, in particular for a device for exchanging heat, comprising the steps: Producing a tubular body, in particular by a deep drawing process Pressing the tubular body along at least one preferred direction Generating a lateral offset Method for producing a connection device according to at least one of the preceding claims, characterized in that the connection device is produced in one piece. A method according to claim 15, characterized in that the connection device is produced with a follow-on composite tool and preferably in a plurality of drawing, forming and calibrating stages.

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