CN102197272A

CN102197272A - Device for attaching a heat exchanger with blades, in particular for automobiles

Info

Publication number: CN102197272A
Application number: CN2009801422116A
Authority: CN
Inventors: 卡蒂.皮尔; 帕特里克.博伊塞尔
Original assignee: Valeo Systemes Thermiques SAS
Current assignee: Valeo Systemes Thermiques SAS
Priority date: 2008-08-27
Filing date: 2009-07-28
Publication date: 2011-09-21
Anticipated expiration: 2029-07-28
Also published as: WO2010023050A3; WO2010023050A2; EP2318797A2; FR2935474B1; BRPI0917125B1; MX2011002167A; BRPI0917125A2; FR2935474A1; CN102197272B

Abstract

The present invention relates to an attachment device (20) for a heat exchanger having a blade unit (18) with two opposite main surfaces (24, 26) connected by an end surface (28), and in which the two main surfaces include respective grooves (30, 32) formed by notches in said blades. The device consists of a generally U-shaped clamp having two arms (34, 36) connected by a bottom, and arranged so as to cover the blade unit (18) in an insertion position in which the two arms (34, 36) bear respectively against the two main surfaces (24, 26) of the blade unit (18) and the bottom (38) against the end surface (28) of the blade unit, the two arms (34, 36) including respective lugs (40, 42) protruding towards the inside and capable of insertion into the respective notches (30, 32) so as to support the device on the blade unit by a detent action. The attachment device can be used for attaching an accessory onto a heat exchanger.

Description

Be used to have the fixture of the heat exchanger of fin, be used in particular for motor vehicle

Technical field

The present invention relates to heat exchanger field, especially for the heat exchanger of motor vehicle.

Relate more specifically to be used to have the fixture of the heat exchanger of flat plate-fin type.

Background technology

The heat exchanger of machinery fitting-type is known, and it is equipped with the collector box, and for example by the plastics manufacturing, and its core comprises the pipe that is crimped to groups of fins or bag.

Heat exchanger can be equipped with one or more annexes especially for the heat exchanger of motor vehicle, for example engine blower, engine blower cover, antivibration lug etc.

A known solutions is at least one collector box that this annex can be attached to heat exchanger.

Also known a kind of way is that this annex directly is fixed to core, that is to say the piece with fin.Thus, a known solutions, for example disclosed FR 2 730 009 is instructed, and comprises utilizing hold-down screw that engine blower directly is fixed to core, and this hold-down screw passes core clipping between the pipe of fin.

Because these screws must pass between the pipe, the interval of these pipes must be not less than minimum of a value, is generally the order of magnitude of 12mm, so that in the assembling process with screw of following pad, particularly do not manage impaired danger in the fastening process.

Another known solutions is to use the fixture that is formed by two parts, and this two parts folder or snap fit cover groups of fins and clamp this fin together, make the latter be out of shape.This known solutions also has shortcoming.At first, fixture needs the assembling of two different parts.Secondly, this Unit Installation causes the distortion of fin, and this causes the infringement of the hot property of interchanger.

Summary of the invention

Specific purpose of the present invention is to overcome above-mentioned shortcoming.

For this reason, the present invention proposes a kind of fixture that is used for heat exchanger, this heat exchanger has one group of fin, and this group fin has two relative interareas that connect by end face, and wherein these two interareas have the respective groove that the recess by fin forms.

According to the present invention, this fixture is formed the roughly shape of the clip of U-shaped, this clip has two branches that link together by the bottom, and this fixture is set in bonding station middle cover residence and states the group fin, in this bonding station, these two branches put respectively on two interareas that lean against described group of fin, and put on the end face that leans against this group fin this bottom, these two branches have corresponding pin shape portion, this pin shape portion gives prominence to towards inside and is adapted to couple in the corresponding groove, so that this device is maintained on the described group of fin by fixing.

The present invention has utilized the recess on the flat fin thus preferably, and these recesses have formed groove together.

In fact known practice is to make fin, and each all is provided with a pair of relative recess two end, and the purpose of this recess is to be used for alignment or guide fin when the core of heat exchanger is assembled.

Thus, when these fin were aligned and make that pipe passes them, recess limited relative groove and these grooves and is used to keep fixture of the present invention.

In the present invention, this device is the form of U-shaped clip and an end that covers core.The existence of the pin shape portion in two branches allows these pin shape portions to be bonded in the groove that is formed by the recess in the fin, so that this device is remained on the described group of fin.Extend because groove is parallel to the direction of pipe in the whole length upper edge of described group of fin, this means that fixture can be installed in selected position arbitrarily along the length of described group of fin.

This scheme is favourable, because it allows this device even also can be attached in the heat exchanger with very little pipe interbody spacer.

In addition, the assembling of fixture does not cause any distortion of fin.

In an advantageous embodiment of the present invention, pin shape portion is the firm pin shape portion that forms by first branch, and another pin shape portion be form by second branch and towards compliant pin shape portion that the inner elastomeric of U-shaped clip is returned.

Thus, along with this device is engaged, firm pin shape portion is engaged in the groove, and compliant pin shape portion strain, move away and return then from its initial position, to be bonded in another groove, thus this device is fixed on along in the selected position of core, that is to say along described group of fin.

Another aspect of the present invention relates to a kind of heat exchanger, and it has one group of fin, and this group fin has two relative interareas that connect by end face, and wherein two interareas have the respective groove that the recess by fin forms.

This heat exchanger is equipped with at least one according to fixture of the present invention with utilize the attached annex of described fixture (one or more).

Description of drawings

In the detailed description that only provides as an example below, with reference to accompanying drawing, wherein:

Fig. 1 is the part front view of heat exchanger, and its core comprises one group of fin, and pipe passes this group fin, and this heat exchanger is equipped with two according to fixture of the present invention, and it can be used to attached annex;

Fig. 2 is equipped with the part viewgraph of cross-section according to an end of one group of fin of fixture of the present invention that is in its bonding station;

Fig. 3 and 4 is two perspective views that the fixture that is in its bonding station is shown;

Fig. 5 is the view that is similar to Fig. 2, shows the fixture that is in the assembling process; With

Fig. 6 is the view that is similar to Fig. 5, and fixture has been assemblied in its bonding station.

The specific embodiment

Fig. 1 shows the heat exchanger 10 of mechanical fitting-type, and it is the motor car engine cooling radiator in this example.Heat exchanger 10 comprises two relative collector boxes 12, and for example by the plastics manufacturing, the core 14 that is made of the pipe 18 that is parallel to each other extends between the collector box, and these pipes are located to pass in the collector box 12 in their ends separately.Core 14 also comprises one group of fin 18.These pipes pass the respective openings in the fin and are crimped to these fin in known manner.Fin here is the flat fin with rectangle overall shape, and its thin slice by metal alloy constitutes, and is generally acieral.

As shown in Figure 1, two fixtures 20 according to the present invention cover core to be used for attached annex 22, for example engine blower cover.This annex 22 is by one or more similar fixtures or alternatively can be fixed to the other end of core by other modes.

With reference now to Fig. 2.This group fin 18 has two

relative interareas

24 and 26, and it is parallel to each other, and is connected by end face 28.Interarea 24 and 26 has the

respective groove

30 and 32 that the recess by fin forms.These recesses are made in a manner known way, to be formed for the reference point of in assembling core process indication or alignment fin.As already mentioned, the present invention has utilized them by giving the new function of these recesses.

Fixture 20 is manufactured to the form of clip, and its shape is roughly U-shaped, has two

branches

34 and 36 that link together by bottom 38.This clip is set to cover this group fin 18 in bonding station, in this position,

branch

34 and 36 puts respectively on the

interarea

24 and 26 that leans against this group fin.In this bonding station, put on the end face 28 that leans against this group fin bottom 38.

Device 20 is maintained in this bonding station by two

pin shape portions

40 and 42, and this pin shape portion gives prominence to towards the inside of U-shaped and is used for being bonded on

respective groove

30 and 32 to provide retentivity by fixing or snap fit.

Shown in the back, pin shape portion 40 is the firm pin shape portions that form by a U branch (being branch 36), and the second pin shape portion is the compliant pin shape portion 42 that forms by second branch (being branch 36), and this pin shape portion resets towards the inner elastomeric of U-shaped clip.

Firm pin shape portion 40 extends on the inboard of first branch near the join domain 44 of branch 34 to bottom 38, and this pin shape portion is manufactured to and first branches into parts, can not be with respect to this first branch motion.

Compliant pin shape portion 42 extends on the inboard of branch 36 near the join domain 46 of branch 36 to end 38.This compliant pin shape portion 42 forms by the deformable lug (Fig. 4,5 and 6) in the thickness of incision branch 36.This lug returns elastically towards the inboard of second branch.

Fixture 20 is manufactured to single-piece, advantageously by molded plastics, is preferably rigidity or semirigid plastic.As suitable examples of material, can be the glass reinforced polyamide.

Device 20 has and the matched size of the size of this group fin, that is to say that the distance that two branches separate must be the function of the thickness of core, and is the function of the width of end face 28 thus.Equally,

pin shape portion

40 and 42 must match with the size of recess, and these pin shape portions will consider

recess

30 and 32 and the distance of the end face 28 of this group fin with respect to the position of bottom 38.

Deformable lug 48 is by in the thickness at incision edge 36, shown in Fig. 4,5 and 6 the bests.This deformable lug 48 limits (Fig. 4) by U-shaped otch 50, and this U-shaped otch has end side 52 and two opposite sides 54 of contiguous compliant pin shape portion 42.End side 52 is straight and is roughly parallel to bottom 38.It helps to limit an end of lug, and compliant pin shape portion 42 arranges along this end.Two opposite sides 54 of otch are connected to end side 52 with the right angle.They are straight and roughly are parallel to each other.

Two opposite sides 54 each all a side of 52 extends to deformable edges 56 from the end, this deformable edges forms hinge and schematically illustrates by the axis X X among Fig. 4.This deformable edges is parallel to end side 52 and relatively extends with this end side and forms hinge thus.End side 52 is positioned near the bottom 38 of device, and deformable hinged edge 56 extends in the zone line of branch 36, and this zone line is the position between the end of join domain 46 and branch 36.

Branch

34 and 36 has corresponding

free end

58 and 60, and it limits the open surface of U-shaped folder, especially shown in Fig. 2,5 and 6.

In the exemplary embodiment,

pin shape portion

40 and 42 each all have similar asymmetric tooth profile.Thus, pin shape portion 42 comprises towards the inclined plane 62 of the opening (being limited by its free end) of U-shaped folder and is positioned at maintenance face 64 (Fig. 2) on the bottom side that U-shaped presss from both sides.Pin shape portion 42 has similar shape.

Branch

34 and 36 has given shape.They have first 66 and 68, and it is connected to bottom 38 with the right angle respectively and it is parallel to each other thus basically.These two firsts are extended by corresponding second portion 70 and 72, and this second portion is assembled toward each other and terminated in free end 58 and 60.Because these two second portions 70,72 toward each other, assemble towards free end, that is to say towards the opening of clip and assemble that they help the tightly clamping of clip on this group fin.

It may be noted that

free end

58 and 60 along opposite direction bending, so that it is engaged to clip on this group fin easilier.And part 70 and 72 is provided with supporting pad 74 and 76 in inside, and it can illustrate in Fig. 2 and 6 best.These pads are positioned as and face each other and be positioned near free end 58 and 60.Their purpose be to prevent locking apparatus be parallel to core pipe direction do not expect arbitrarily move.They advantageously have striated structure so that their edge mate easy and fin.

In an illustrated embodiment, device is included in the attaching clamp 78 that the outside is attached to the U-shaped folder.Here, this lug is outstanding from branch 34 at join domain 44.This lug also is provided with opening 80, is roughly Long Circle, and hold-down screw etc. can pass this opening.

This device can be provided with one or more attaching clamps.Its structure and position can change according to the annex that will be fixed to heat exchanger.

In order to assemble this fixture, Fig. 5 shows this process.The open surface of clip covers the mode of core with it and is engaged.In engaging process, firm pin shape portion 40 will at first slide in the zone of this face between end face 28 and recess 30 along interarea 24.Simultaneously, compliant pin shape portion 42 slides in the zone of this face between end face 28 and recess 32 along interarea 26.In doing so, compliant pin shape portion moves to the next door, shown in the arrow F1 in the Figure 4 and 5.Particularly, in rest position, separately the distance of two pin shape portions is less than the width of end face 28.Along with the continuation of this motion, pin shape portion 40 will be bonded in the groove 30, and pin shape portion 42 will be bonded in the groove 32 by the elastic reaction (shown in the arrow F2 among Fig. 6) of lug 48.

In the position that engages fully, two pin shape portions are engaged with in the corresponding groove and this device is fixed motionless.Pad 74 and 76 existence have prevented the slip arbitrarily do not expected of this device along the direction parallel with the direction of the pipe of core.

Pin shape portion is fixed and pin shape portion is flexible and deformable thus, means and can avoid separating these branches in the engagement movement process.

In fact, if two pin shape portions all are firm and are attached to these branches securely that these branches must separate slightly to allow joint, then exist these two branches to lose their some flexible relevant risks.

The multiple version of embodiments of the invention is possible, and particularly about the shape and size of this device, the size that needs only its suitable and relevant groups of fins matches.

As already mentioned, this device can comprise one or more attaching clamps, and it is designed for attached particular attachment.

An advantageous applications of the present invention is the motor vehicle cooling radiator.This device then can be used for attached engine blower, engine blower cover, antivibration lug etc.

Claims

1. fixture that is used for heat exchanger (10), this heat exchanger has one group of fin (18), and this group fin has two relative interareas (24 that connect by end face (28), 26), and wherein two interareas have the respective groove (30,32) that the recess by fin forms

It is characterized in that, this fixture (20) is formed the roughly shape of the clip of U-shaped, this clip has two branches (34 that link together by bottom (38), 36), and this fixture is set to cover this group fin (18) in bonding station, in this bonding station, these two branches (34,36) put two interareas (24 that lean against this group fin (18) respectively, 26) on, and put on the end face (28) that leans against this group fin this bottom (38), these two branches (34,36) have corresponding pin shape portion (40,42), this pin shape portion gives prominence to towards inside and is adapted to couple in the corresponding groove (30,32) so that this device is maintained at by fixing on this group fin.

2. device as claimed in claim 1, it is characterized in that, a pin shape portion is the firm pin shape portion (40) that forms by first branch (34), and another be form by second branch (36) and towards compliant pin shape portion (42) that the inner elastomeric of U-shaped clip is returned.

3. device as claimed in claim 2, it is characterized in that, firm pin shape portion (40) extends on the inboard of first branch (34) near the join domain (44) of described first branch (34) and bottom (38), and this firm pin shape portion (40) and first branch (34) form parts.

4. as claim 2 or 3 described devices, it is characterized in that, compliant pin shape portion (42) extends on the inboard of second branch (36) near the join domain (46) of described second branch (36) and bottom (38), and compliant pin shape portion (42) forms by thickness and the deformable lug (48) that return elastically towards the inboard of second branch of incision second branch (36).

5. device as claimed in claim 4, it is characterized in that, deformable lug (48) is limited by U-shaped otch (50), this otch has end side (52) and two opposite sides (54) of contiguous compliant pin shape portion (42), each of these two opposite sides all extends to deformable edges (56) from described end side (52), and this deformable edges forms the hinge (XX) that relatively extends with end side (52).

6. device as claimed in claim 5, it is characterized in that, the deformable edges (56) that forms hinge is extended in the zone line of second branch (36), and this zone line is the position between the free edge (60) of join domain (46) and second branch (36).

7. as each the described device in the claim 1 to 6, it is characterized in that, each all has the asymmetric tooth profile pin shape portion (40,42), and this asymmetric tooth profile is limited by the maintenance face (64) on the bottom side of the inclined plane (62) of the opening that faces the U-shaped clip and U-shaped clip.

8. as each the described device in the claim 1 to 7, it is characterized in that branch (34,36) has corresponding free end (58,60), this free end limits the open surface of U-shaped clip.

9. device as claimed in claim 8 is characterized in that, branch (34,36) have first (66,68), this first is connected to bottom (38) and by second portion (70 with the right angle, 72) extend, this second portion is assembled toward each other and is terminated in the corresponding free end (58,60).

10. install as claimed in claim 8 or 9, it is characterized in that, this corresponding free end (58,60) is crooked in opposite direction, so that easily clip is bonded on this group fin (18).

11. each the described device as in the claim 1 to 10 is characterized in that, branch (34,36) has towards mutually positioning and be positioned near the corresponding free end of these branches supporting pad (74,76).

12. each the described device as in the claim 1 to 11 is characterized in that, this device also is included at least one attaching clamp (78) that the outside is attached to the U-shaped clip.

13. each the described device as in the claim 1 to 11 is characterized in that this device is manufactured to single by molded plastics.

14. heat exchanger, it has one group of fin (18), this group fin has two relative interareas (24 that connect by end face (28), 26), and wherein these two interareas (24,26) have the respective groove (30,32) that the recess by fin forms, it is characterized in that, this heat exchanger be equipped with at least one as each the described fixture (20) in the claim 1 to 13 and utilize one or more as described in the attached annex (26) of fixture.