DE102008051218A1 - Condenser for air conditioning system, particularly motor vehicle air conditioning system, has overflow openings having collector and collector pipe - Google Patents

Abstract

The condenser has overflow openings (28) having collector (12) and collector pipe. The condenser has a mounting element, which is arranged between the collector and collector pipe. A collector pipe contact surface (34) has flowing channel (40), which extends through the collector pipe contact surface.

Description

The The present invention relates to a capacitor for a Air conditioning, in particular an automotive air conditioning system comprising a collector and a collection pipe attached to the collector and over Flow channels with fluidic this is connected.

Capacitors of the aforementioned type are known in the prior art in a variety of configurations. For example, the EP 1 533 580 A1 a condenser for the air conditioning system of a motor vehicle, comprising a finned tube block arranged on both sides collecting pipes. Furthermore, the condenser has a collector, which is connected via flow channels with one of the manifolds and receives a filter device, a seal and a dryer for the refrigerant. The collector consists of a tubular main body, projecting radially outward mounting studs, which are integrally formed with the main body. The attachment stubs are used to attach the manifold to the collector, wherein through holes are provided in some of the attachment piece, which form the manifold and the collector fluidly interconnecting flow channels. For securing the collecting tube to the collector, the collecting tube is positioned on the attachment piece of the collector and then connected to it in a materially bonded manner. A disadvantage of in the EP 1 533 580 A1 described capacitor is that the production of the collector is very complicated and expensive due to the one piece with this trained Befestigungsstutzern. This disadvantage is particularly relevant when the capacitor is mass-produced. Furthermore, the positioning of the flow channels after the manufacture of the collector is no longer variable. If different capacitors are to be mounted, which differ from one another with regard to the positions of their flow channels, then separate collectors must be produced for each model. This leads to high manufacturing and storage costs.

The pamphlets DE 197 05 720 A1 and DE 101 64 668 A1 disclose capacitors in which the collector is integrally formed with a manifold half as an extruded profile. In order to produce a fluidic connection between the collector and the manifold, bores corresponding to the flow channels are introduced into the extruded profile. An advantage of capacitors constructed in this way is that the positions of the flow channels are determined only after the extrusion of the profile. Accordingly, identical profiles can be used for different capacitors, which differ from one another with respect to the positions of their flow channels. The disadvantage, however, are the very high production costs of the profile.

Another condenser for a motor vehicle air conditioner is in the DE 103 53 160 A1 disclosed. The condenser includes a header and a header attached to the header and fluidically connected thereto through flow channels. The collector comprises a tubular main body and a profile end piece in which a free end of the tubular main body is received. The profile end piece has, on the side facing the collecting tube in the intended state, through-holes, into which passages projecting from the collecting tube are used to form the flow channels. In this embodiment of the capacitor is disadvantageous that the production of the Endprofilstückes is complicated and expensive. In addition, first, the tubular main body and the Profilendstück must be materially joined together before the manifold in a subsequent Joining step can be firmly bonded to the collector. This makes the assembly time consuming and costly. The same applies to the in the pamphlets DE 198 48 744 A1 and DE 103 53 160 A1 described capacitors for motor vehicle air conditioning systems, the collector also have profiled end pieces, in which the flow channels are formed.

Another embodiment of a condenser for a motor vehicle air conditioning is in the document DE 103 38 527 A1 disclosed. Also, this capacitor comprises a manifold and a collector, which is attached to the manifold and fluidly connected via flow channels with this. According to one embodiment, the flow channels are formed as separate sleeves with a substantially circular cross-section, which engage in corresponding overflow openings, which are provided in the collector and in the collecting tube. Each sleeve has on its outer side approximately centrally a circumferentially extending projection which serves to define the insertion depth of the respective ends of the sleeve into the associated overflow openings. To mount the capacitor, the sleeves are inserted in each case with one of its ends in the associated overflow openings of the collector. Then each other ends of the sleeves, which are now introduced by the collector, introduced into the associated overflow openings of the manifold, after which the manifold and the collector are materially connected to the sleeves. A major disadvantage of this arrangement is that the ends of the sleeves to achieve a stable positioning of the sleeves on the collector and manifold far into the interior of the collector and the manifold before have to stand. In particular, with respect to the collector, the insertion of the internals of the collector into the interior of the same projecting ends may result in problems such as placing a filter device, a seal, a dryer or the like.

outgoing From this prior art it is an object of the present invention Invention, a condenser for an air conditioner, in particular to create for a motor vehicle air conditioning, the one simple and inexpensive construction and has also easy to assemble.

These Problem is in accordance with the present invention achieved by a capacitor according to claim 1. The dependent ones Claims relate to individual embodiments of the present invention.

Of the Capacitor according to the present invention comprises a collector and a collection pipe attached to the collector and over Flow channels with fluidic this is connected. According to the invention is for Attaching the collector to the manifold at least one fastener provided, which is arranged between the manifold and the collector is. The fastening element comprises a collecting pipe resting surface, the at the opposite outer surface area the manifold is form-fitting and rests against this. Further the fastening element comprises at least one flow channel, which extends through the Sammelrohrauflagefläche and fluid technology, each with an overflow the collector and the manifold is connected. So it will be at least one flow channel of the capacitor through the Fastener formed. However, two fasteners are preferred used, whose flow channels then an inlet and form a process. Due to the fact that the flow channel of the Fastener through the Sammelrohrauflagefläche the fasteners extends, is a very compact design allows the fasteners.

Of the Flow channel of each fastener is preferred formed by an annular projection whose free End in a formed in the manifold overflow attacks. That into the overflow opening of the Collector's gripping free end of the annular projection is preferably formed such that it is not in the interior of the collector. Particularly advantageous is the free end concave according to the inner diameter of the collecting tube, so that this is substantially flush with the inner wall of the collector.

Further the capacitor may comprise at least one support element, which is arranged between the collector and the manifold and a Sammelrohrauflagefläche has that on the opposite her Exterior surface area of the manifold adapted is and is attached to this. Thus, the support element differs essentially only to the effect of the fasteners, that this has no flow channel. Such a support element is used when the fasteners are insufficient, to securely fix the seed tube to the collector.

At the outer surface of the collector are advantageous Clamping rails for clamping the fastening elements and / or the at least one support element provided, wherein the clamping rails are preferably arranged parallel to each other. These clamping rails serve to the fastening or support elements on the Pre-assemble collectors before, for example, cohesively be connected to each other. The fastening and / or support elements preferably have feet that designed in such a way are that they are clamped with the clamping rails engaged can be. The feet and the clamping rails are advantageously designed such that the fastening and / or support elements for generating the clamping engagement from above on the clamping rails are plugged. In this way can be the positioning of the attachment and / or Automate support elements on the clamping rails very well.

Around the pre-positioning or prefixing of the attachment and / or Support elements on the clamping rails realize even better To be able to, are on the outer surface of the Collector along the clamping rails preferred receiving grooves for receiving provided the feet.

Further the collector between the grooves preferably a flat trained area up to a larger one Contact surface between the flow channels the fasteners and the associated overflow openings to achieve the collector.

The attachment and / or support elements are preferably materially connected to the collector and / or the collecting tube, in particular welded or soldered. For this purpose, the fastening and / or support elements and / or the collector and / or the collecting tube are advantageously at least partially coated with a solder material. Accordingly, the mounting and / or support elements need to be positioned at the assembly of the capacitor only to the collector, whereupon the manifold on the bearing surfaces of the fastener can be applied. Then, this arrangement is subjected to a heat treatment. During this heat treatment, the solder material, with which the fastening and / or support elements are coated, is melted to produce a material connection. In this way, results in a very simple, fast and thus inexpensive installation.

Of the Collector preferably has mounting brackets, the one-piece are formed with this. Using these mounting brackets the collector and thus the capacitor, for example, on a Motor vehicle be attached.

Of the Collector and / or the manifold and / or the attachment and / or Support elements are advantageously made of aluminum, because aluminum is a very stable material with low weight is that works very well.

Of the Structure of the capacitor according to the invention is characterized particular characterized by the fact that the collector, the manifold, the fasteners and the support elements easy and inexpensively manufactured and assembled. moreover The positions of the flow channels can be easily be varied. For this purpose, only the overflow openings be moved to the collector and the manifold, so the corresponding through holes be drilled or punched at other positions. In contrast to those collectors who are profiled to form the flow channels can use the flow channels For example, be arranged centrally on the collector, if this is desired.

following becomes a preferred embodiment of the present invention described in more detail with reference to the accompanying drawings. In it is:

1 an exploded perspective view of a collector of a capacitor according to an embodiment of the present invention;

2 a perspective view of the in 1 illustrated collector in the assembled state;

3 a perspective view of a first Befestigungsele Mentes in the 1 and 2 illustrated collector;

4 a front view of the in 3 illustrated fastener;

5 a side view of the in 3 illustrated fastener;

6 a top view of the in 3 illustrated fastener;

7 a perspective view of a support member of the in the 1 and 2 illustrated collector;

8th a front view of the in 7 illustrated support element;

9 a side view of the in 7 illustrated support element;

10 a top view of the in 7 illustrated support element and

11 a sectional view of the in the 1 and 2 illustrated collector along the line XI in 2 to which a manifold is attached.

Same Reference numbers refer to the same components below.

The 1 to 11 show partial views of a capacitor 10 according to an embodiment of the present invention. The capacitor 10 includes a collector 12 and a manifold 14 that at the collector 12 attached and fluidically connected thereto. Both the collector 12 as well as the manifold 14 are made of aluminum.

The collector 12 comprises a substantially tubular collector housing 16 which extends in a longitudinal direction L. At the collector housing 16 are two mounting brackets 18 molded to the outside of the collector housing 16 protrude. The mounting brackets 18 each have an elongated passage opening 20 on, through which fasteners can be inserted to the collector 12 For example, to attach to the body of a motor vehicle.

Along one of the mounting brackets 18 opposite top 22 of the collector's housing 16 for receiving the manifold 14 serves, extending parallel to each other two upwardly projecting clamping rails 24 , Furthermore, recording grooves 26 at the top 22 of the main body 16 provided, extending between the clamping rails 24 and extend parallel to them. In the between the receptions 26 extending flat surface 27 are two overflow openings 28 drilled or punched, as the inlet and outlet opening for that in the condenser 10 serve flowing coolant. Corresponding overflow openings 29 are at the manifold 14 educated. A free end of the collector's housing 16 is with a lid 31 sealed fluid-tight.

For fastening the manifold 14 at the collector 12 includes the capacitor 10 two of the overflow openings 28 and 29 assigned and structurally identical fastening elements 32 , The fasteners 32 are made of an aluminum sheet and coated with a solder material. They each include a manifold 14 facing Sammelrohrauflagefläche 34 , which at the opposite outer surface area of the manifold 14 is conformed and flush with the manifold 14 is applied. In other words, the Sammelrohrauflageflächen 34 the fasteners 32 concave and with the outer diameter of the opposite outer surface area of the manifold 14 provided corresponding rounding, so that in the assembled state, a surface contact between the fasteners 32 and the manifold 14 is produced. Starting from the collecting pipe support surface 34 each fastener 32 extends down a ring-shaped projection 38 that has a flow channel 40 for generating the fluidic connection between the collector 12 and the manifold 14 forms, as described in more detail below. For fixing the fastening elements 32 on the clamping rails 24 of the collector 12 includes each fastener 32 stands 42 extending from the collecting pipe support surface 34 extend downwards. The distance between the feet 42 is chosen such that the fasteners 32 past the clamping rails 24 in the Aufnahmeu th 26 can be used. Are the fasteners 32 in the grooves 26 used, so can pressure on the clamping rails from the outside 24 be exercised so that the fasteners 32 under partial deformation of the clamping rails 24 clamped to the collector housing 16 are held.

For fastening the manifold 14 at the collector 12 includes the capacitor 10 also a support element 44 , which is made of an aluminum sheet and coated with a solder material. The support element 44 includes a collection tube 14 facing Sammelrohrauflagefläche 46 , which at the opposite outer surface area of the manifold 14 is conformed and flush with the manifold 14 is applied. Consequently, the Sammelrohrauflagefläche 46 of the support element 44 concave and with the outer diameter of the opposite outer surface area of the manifold 14 provided corresponding rounding, so that in the assembled state, a surface contact between the support element 44 and the manifold 14 is produced. Furthermore, the support element comprises 44 four support feet 48 for fixing the support element 44 on the clamping rails 24 of the collector 12 serve. Thus, the support element comprises 44 essentially the same structure as the fasteners 30 , wherein the support element 44 unlike the fasteners 32 no flow channel defined.

For mounting the in 11 shown capacitor 10 First, the coated with a solder material fasteners 32 between the clamping rails 24 used in such a way that their projections 38 in the associated overflow openings 28 of the collector 12 introduced and their feet 42 in the grooves 26 of the collector 12 be used. Then also the support element 44 from above in such a way between the clamping rails 26 used that his feet 48 in the reception 26 be recorded. Now, the manifold 14 such at the Sammelrohrauflageflächen 34 the fasteners 32 and at the Sammelrohrauflagefläche 46 of the support element 44 be arranged that its overflow openings 29 with the overflow openings 28 of the collector 12 aligned. The arrangement thus obtained is then fed to a furnace in which the solder material with which the fasteners 32 and the support element 44 coated, is melted. Accordingly, the manifold 14 , the fasteners 32 , the support element 44 and the manifold 14 of the capacitor 10 soldered together.

The in the 1 to 11 illustrated capacitor 10 is characterized in particular by the fact that the collector 12 and the manifold 14 can be produced easily and inexpensively. In particular, costly machining post-processing steps can be reduced to a minimum. The attachment and support elements can be produced very inexpensively, the production of these elements requires very little material due to the small size. Furthermore, the capacitor can be 10 install cost-effectively in just a few steps.

It it should be clear that the embodiment described above only as an example and in no way limiting is. Rather, modifications and changes are possible without departing from the scope of the present application, which is defined by the appended claims.

10

capacitor

12

collector

14

manifold

16

collector housing

18

mounting brackets

20

Through opening

22

top

24

clamping rails

26

receiving grooves

27

level area

28

overflow

29

overflow

31

cover

32

fasteners

34

Manifold bearing surface

38

head Start

40

flow channel

42

stands

46

support element

48

Manifold bearing surface

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1533580 A1 [0002, 0002]
• DE 19705720 A1 [0003]
• - DE 10164668 A1 [0003]
• - DE 10353160 A1 [0004, 0004]
• - DE 19848744 A1 [0004]
• - DE 10338527 A1 [0005]

Claims (15)

Capacitor ( 10 ) for an air conditioning system, in particular an automotive air conditioning system, comprising an overflow openings ( 28 ) collector ( 12 ) and an overflow openings ( 29 ) collecting manifold ( 14 ) attached to the collector ( 12 ) and via flow channels ( 40 ) is fluidically connected thereto, characterized in that the capacitor ( 10 ) at least one fastening element ( 32 ), which - between the collector ( 12 ) and the manifold ( 14 ), - a Sammelrohrauflägefläche ( 34 ), which at the opposite outer surface region of the collecting tube ( 14 ) is conformed and rests against this, and - at least one flow channel ( 40 ) which extends through the collecting pipe support surface ( 34 ) and fluidly, each with an overflow ( 28 . 29 ) of the collector ( 12 ) and the manifold ( 14 ) connected is. Capacitor ( 10 ) according to claim 1, characterized in that the flow channel ( 40 ) of the fastening element ( 32 ) by an annular projection ( 38 ) is formed, the free end in a collector ( 12 ) formed overflow opening ( 28 ) attacks. Capacitor ( 10 ) according to claim 2, characterized in that in the overflow ( 28 ) of the collector ( 12 ) gripping free end of the annular projection ( 38 ) is designed such that it does not enter the interior of the collector ( 12 ) protrudes. Capacitor ( 10 ) according to claim 3, characterized in that in the overflow ( 28 ) of the collector ( 12 ) cross-end of the annular projection ( 38 ) according to the inner diameter of the collector ( 12 ) is concave. Capacitor ( 10 ) according to one of the preceding claims, characterized in that this at least one support element ( 46 ) between the collector ( 12 ) and the manifold ( 14 ) and has a Sammelrohrauffläche surface, which at the opposite outer surface region of the collecting pipe ( 14 ) is conformed to and rests on this. Capacitor ( 10 ) according to one of the preceding claims, characterized in that on the outer surface of the collector ( 12 ) outwardly projecting clamping rails ( 24 ) for the clamping reception of the fastening elements ( 32 ) and / or the at least one support element are provided. Capacitor ( 10 ) according to claim 6, characterized in that the clamping rails ( 24 ) are arranged parallel to each other. Capacitor ( 10 ) according to claim 6 or 7, characterized in that the fastening elements ( 32 ) and / or the at least one support element feet have, which are formed such that they clamped with the clamping rails ( 24 ) can be engaged. Capacitor ( 10 ) according to claim 7, characterized in that the feet and the clamping rails ( 24 ) are formed such that the fastening elements ( 32 ) and / or the at least one support element for generating the clamping engagement from above between the clamping rails ( 24 ) can be used. Capacitor ( 10 ) according to claim 8 or 9, characterized in that at the collector ( 12 ) along the clamping rails ( 24 ) Receiving grooves ( 26 ) for receiving the feet of the fasteners ( 32 ) and / or the at least one support element are formed. Capacitor according to Claim 10, characterized in that the collector ( 12 ) between the recording grooves ( 26 ) a flat surface ( 27 ) having. Capacitor ( 10 ) according to one of the preceding claims, characterized in that the fastening elements ( 32 ) and / or the at least one support element with the collector ( 12 ) and / or the manifold ( 14 ) are materially connected, in particular welded or soldered. Capacitor ( 10 ) according to one of the preceding claims, characterized in that the fastening elements ( 32 ) and / or the at least one support element and / or the collector ( 12 ) and / or the collecting tube ( 14 ) is at least partially coated with a solder material to produce the cohesive connection / are. Capacitor ( 10 ) according to one of the preceding claims, characterized in that the collector ( 12 ) Mounting brackets ( 18 ), which are integrally formed therewith. Capacitor ( 10 ) according to one of the preceding claims, characterized in that the collector ( 12 ) and / or the collecting tube ( 14 ) and / or the fastening elements ( 32 ) and / or the at least one support element are made of aluminum.