CN202970883U

CN202970883U - Punctured type main fin for radiator

Info

Publication number: CN202970883U
Application number: CN 201220608375
Authority: CN
Inventors: 张哲元; 屠立武
Original assignee: NINGBO WOTE AUTO PARTS CO Ltd
Current assignee: NINGBO WOTE AUTO PARTS CO Ltd
Priority date: 2012-11-07
Filing date: 2012-11-07
Publication date: 2013-06-05
Anticipated expiration: 2022-11-07

Abstract

The utility model discloses a punctured type main fin for a radiator. The main fin comprises a main body made of an aluminum plate, wherein a plurality of straight through holes are arrayed on the main body; the through holes are composed of three parts, namely, arc surfaces, guiding surfaces and welding surfaces, from the outer to the inner; an included angle of tangent lines of the arc surfaces on the two sides is a guiding angle at 52-76 DEG; the length of the cross sections of the guiding surfaces is 0.9mm-1.1mm; and the depth of the cross sections of the welding surfaces is 1.35mm-1.65mm. The pipe-colliding phenomenon is difficult to occur; the main fin is more suitable for automatic assembling; the working efficiency and the capacity are increased; the equipment cost and the human resource cost are saved; besides, a brazing area is big during a furnace welding process, the whole yield of the product is greatly increased, the rejection rate of the product is reduced and the cost is saved; the radiator adopting the main fin designed by the utility model can obviously increase the practicability of the radiator and prolong service life of the radiator; the fault occurring in the running process of the radiator is greatly reduced; and the punctured type main fin for the radiator belongs to the technical field of automobile spare parts.

Description

Thorn cellular type main slice of radiator

Technical field

The utility model belongs to the auto parts machinery technical field, especially relate to a kind ofly be applied to that class is light, the thorn cellular type main slice of radiator on the compact car radiator.

Background technique

Automobile radiators material and Manufacturing Technology Development are very fast.The aluminium radiator that carries out punching with aluminium has obvious advantage on material lightweight with it, progressively replaced radiator made of copper at car and Light-duty Vehicle field.The supporting automobile radiators of Foreign Car mostly is Aluminium Radiator, is mainly to consider (especially American-European countries) from the angle of protection of the environment.In the car of European model utility, Aluminium Radiator is seized of the super large ratio of ratio average out to 64%.From the development prospect of China's automobile radiators need of production from now on, the Aluminium Radiator of producing with hard soldering significantly increases gradually.At present, automobile radiators is just towards common target, light-duty, efficient, economic direction is made great efforts in development, and what domestic passenger car product adopted more than 90% is Aluminium Radiator, also adopts successively this Aluminium Radiator and have the trend of expansion spreading on commercial car.

Radiator claims again automobile radiators, is a critical part in automobile cooling system.Its function is to use radiator to carry out distribute heat, and cooling water absorbs heat in water jacket, after flowing to radiator, transfer heat to radiator, returns in water jacket, carries out in this way continuous circulation cooling.Radiator is the heat exchanger of water cooling type engine, in the cooling mode of cross-ventilation, keeps the temperature of the normal operation needs of engine.It absorbs the heat of cylinder body as a fluid loop of engine radiating, prevents generator overheating.Because specific heat of water holds larger, therefore absorb after the heat of cylinder body that temperature raises and few, so the heat of motor utilizes water to carry out heat by conduction as heat-loading body by this fluid loop of cooling water, dispel the heat by the mode of liquid convection by large-area radiating fin, efficient can be higher again.And cooling effect is more even, and the effect of water tank has been exactly the compensating action that expands with heat and contract with cold, and both can collect the cooling water that overflows when high temperature, and goes the cooling water in container can be back to radiator when low temperature in.After motor car engine quits work, the contraction that will turn cold of the cooling water in cooling system, and form negative pressure in the system of sealing.

Mainly by a series of compositions such as flat tube, main leaf, fin, hydroeciums, main leaf is provided with a plurality of through holes that are connected with flat tube to radiator, flat tube and the welding of main leaf through-hole wall, and the quality of main leaf and flat tube contiguity directly has influence on the work of whole radiator of later stage.There are following three deficiencies in existing main leaf;

The first, main leaf through hole external port of the prior art is comprised of circular arc portion and incline section, the angle that two of the left and right of circular arc portion tangent line forms becomes angle of deflection, substantially be about 40 degree at present, when the size of angle of deflection directly has influence on flat tube insertion main leaf through hole, requirement to flat tube and through hole centre distance has increase, if deviation is slightly arranged, the flat tube end is easy to bump against on the circular arc portion of main leaf through hole outer end, cause the flat tube Leading Edge Deformation, damage flat tube.Especially at present factory adopts automatic production substantially, and the stamping part of each main leaf more or less has certain difference, be difficult to guarantee that the centre distance of flat tube and each main leaf through hole when assembling is in predetermined range, therefore the too little meeting of main leaf through hole outer end angle of deflection causes the circular arc portion of flat tube end and through hole outer end in flat tube and main leaf assembly process that the possibility increase of shock occurs, and causes the damage of flat tube.

The second, the incline section (Professional visitors is called guide surface) of existing main leaf through hole outer end, mainly to play a leading role, that is, incline section is encountered through after circular arc portion in the flat tube end, in incline section imports to through hole (face of weld).But at present the length in the guide surface cross section of main leaf through hole outer end is in the 0.5mm left and right, because the guide surface cross section is too short, after flat tube is through circular arc portion one segment distance, flat tube is not also encountered the outer end of guide surface, and guide surface does not play in the very first time effect of accepting, and does not have a leading role, so the requirement of the centre distance of flat tube and main leaf through hole improved again, be difficult in practical operation accomplish, so finally cause flat tube to strike on circular arc portion the inner, damage flat tube.

Three, the inboard hole wall of main leaf through hole is mainly and the welding of the outer wall of flat tube, and the degree of depth Professional visitors of the inboard hole wall of through hole is called the face of weld of through hole, because the face of weld of through hole need to weld with flat tube, so all has a brazing flux once on the face of weld of through hole.the face of weld section depth of at present existing main leaf through hole is 0.87mm (thickness of main leaf sheet material is 1mm), because face of weld is shorter, therefore the brazing flux on face of weld is little, can only increase for such main leaf product the defective that brazing flux removes to make up product self more, although but increased brazing flux, weld through stove the situation that next product still can exist flat tube and main leaf to come off after product and flat tube assembling, cause product follow-up soldering to make up, also might cause product to produce the product cracking because soldering is insecure in test vibration experiment and pulse test process, cause product assembly (radiator) whole scrapping, scrap cost increases greatly.

The model utility content

Technical problem to be solved in the utility model is: provide in a kind of assembly process, reduce the pipe phenomenon, improve the thorn cellular type main slice of radiator with the flat tube weld strength.

Technical solution adopted in the utility model is: a kind of thorn cellular type main slice of radiator, comprise the body of being made by aluminium sheet, be arranged with a plurality of in-line through holes on body, through hole is comprised of arc surface, guide surface and face of weld three parts from outside to inside, the tangent line angle of both sides arc surface becomes angle of deflection, angle of deflection is 52 °-76 °, and the cross-sectional length of guide surface is 0.9mm-1.1mm, and the section depth of face of weld is 1.35mm-1.65mm.

Described angle of deflection is 68 °.

The cross-sectional length of described guide surface is 1mm.

The section depth of described face of weld is 1.55mm.

The beneficial effects of the utility model are: the utility model thorn cellular type main slice of radiator, angle of deflection is increased to 52 °-76 °, the cross-sectional length that extends simultaneously guide surface is 0.9mm-1.1mm, be difficult for causing the pipe phenomenon, be more suitable for the automation assembling, increase work efficiency and production capacity, and saved equipment cost, cost of human resources; In addition, the cross-sectional length of face of weld expands 1.35mm-1.65mm to, and the soldering area is large in stove weldering process, can make the assembly up-to-standard rate of product significantly increase, and has therefore reduced product rejection rate, has saved cost.So use the radiator of the main leaf of the utility model design can obviously increase practicability and the life-span of radiator, and decrease the fault that occurs in running of radiator.

Description of drawings

Fig. 1 is the utility model plan view.

Fig. 2 is B-B schematic diagram in Fig. 1.

Fig. 3 is A-A schematic diagram in Fig. 1.

Fig. 4 is A-A schematic diagram in Fig. 1.

Fig. 5 is the schematic cross-section of flat tube when being engaged in through hole.

In figure, 1, body, 2, through hole, 2.1, arc surface, 2.2, guide surface, 2.3, face of weld, 3, flat tube, a, angle of deflection, b, cross-sectional length, c, section depth.

Embodiment

Be below the utility model preferred embodiment, but therefore do not limit protection domain of the present utility model.

with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, a kind of thorn cellular type of the utility model main slice of radiator, comprise the body 1 of being made by aluminium sheet, be arranged with a plurality of in-line through holes 2 on body 1, through hole 2 is from outside to inside by arc surface 2.1, guide surface 2.2 and face of weld 2.3 3 parts form, the tangent line angle of both sides arc surface 2.1 becomes angle of deflection a, the utility model is on original basis, expand traverse angle a to 52 °-76 °, so, be that flat tube 3 assembled in process, the centre distance of flat tube 3 and through hole 2 is required can slight reduction, during assembling, flat tube 3 deviation point a little can not bump against on arc surface 2.1 yet, the cross-sectional length b of guide surface 2.2 is 0.9mm-1.1mm, be convenient in assembly process, flat tube 3 is through after arc surface 2.1, guide surface 2.2 can dock with 3 very first times of flat tube, play leading role.The section depth c of face of weld 2.3 is 1.35mm-1.65mm, compare original 0.87mm, area of contact between the utility model face of weld 2.3 and flat tube 3 increases greatly, wants many before brazing flux is also compared, thus the face of weld 2.3 of through hole 2 be connected after flat tube 3 welds more firm.

The utility model embodiment is as a kind of preferred, and it is 68 ° that angle of deflection a is made as, and the cross-sectional length b of guide surface 2.2 is 1mm.The section depth c of face of weld 2.3 is 1.55mm.Made corresponding development test and innovation and made and having felt free to try through the technician, having broken original outmoded idea, the angle of deflection a of main leaf is again tested and designs.Drawing angle of deflection a through repeatedly test, to be made as 68 ° be the most suitable main leaf through hole 2 and the assembling of flat tube 3, not only the loss of mould is down to minimum, and make the cross-sectional length b of the guide surface 2.2 after punching can reach 1mm, main leaf in the case just is more suitable for using automatic assembly machine to assemble, this has not only increased by 36% assembling speed, and the assembly scrappage has directly descended 5%.Radiator can better be brought into play the effect of automatic assembling in assembly process after using this product, and draw through overtesting, with reasonably the lead cross-sectional length b of angle design and excellent guide surface 2.2 of this product, can reduce the assembly product rejection 87% unreasonable because leading, that the cross-sectional length that leads b deficiency causes in the radiator assembly process.Efficient and up-to-standard rate that this has not only increased assembly also greatly reduce the waste of enterprise.

The utility model adopts the main leaf of thorn well format punching effectively to increase the section depth c of the face of weld 2.3 of hole after punching is completed.General punching main leaf is after punching is completed, its face of weld section depth only can reach 0.87mm, and the main leaf of the utility model design effective face of weld 2.3 section depth c after punching can reach 1.55mm, and the general main leaf of the ratio of this product increases the effective surface of contact when coordinating with the flat tube 3 of radiator by contrast.The test frequency that main leaf through hole 2 is larger with flat tube 3 surface of contact, the assembly product of brazing coating face after welding more at most can bear is more, therefore many to the Safety performance of automobile also corresponding raising, and the utility model main leaf is non-waste generation in process of production, in the situation that the limit makes the utilization ratio of material reach maximum.

The utility model thorn cellular type main slice of radiator not only face of weld 2.3 has obtained obvious increase, and in the situation that through hole 2 (the being face of weld 2.3 parts) perpendicularity that increases after face of weld 2.3 punctures also is significantly improved, its perpendicularity can be controlled at 90 ° ± 2 °, more effective make its with other Assembly of the parts processes in fabulous closely cooperating arranged.When the brazing flux of product through two products contacts after stove weldering significantly increases, make the in use situation decrease that ftractures of flat tube 3 and main leaf of radiator, so the water leakage ratio of radiator decreases also.Show according to test, can reduce by 48% because of scrapping that seepy question causes after the main leaf that uses the utility model to design, and guarantee the Security of the parts such as motor car engine in running.

Although the improved place of the utility model is the variation of several data in view of literal, but the improvement of above data is the marrow place of the utility model thorn cellular type main slice of radiator just, this product is in the situation that lose contact with reality to use and further investigate and test, and successfully obtains the ideal effect of original design.

Claims

1. one kind is stung the cellular type main slice of radiator, comprise the body (1) of being made by aluminium sheet, it is characterized in that: be arranged with a plurality of in-line through holes (2) on body (1), through hole (2) is from outside to inside by arc surface (2.1), guide surface (2.2) and face of weld (2.3) three parts form, the tangent line angle of both sides arc surface (2.1) becomes angle of deflection (a), angle of deflection (a) is 52 °-76 °, the cross-sectional length (b) of guide surface (2.2) is 0.9mm-1.1mm, the section depth (c) of face of weld (2.3) is 1.35mm-1.65mm.

2. thorn cellular type main slice of radiator according to claim 1, it is characterized in that: described angle of deflection (a) is 68 °.

3. thorn cellular type main slice of radiator according to claim 1 is characterized in that: the cross-sectional length (b) of described guide surface (2.2) is 1mm.

4. thorn cellular type main slice of radiator according to claim 1 is characterized in that: the section depth (c) of described face of weld (2.3) is 1.55mm.