CN201340208Y

CN201340208Y - Finned oil cooler

Info

Publication number: CN201340208Y
Application number: CNU2009200505458U
Authority: CN
Inventors: 任东颜
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-16
Filing date: 2009-01-16
Publication date: 2009-11-04
Anticipated expiration: 2019-01-16

Abstract

The utility model relates to a finned oil cooler, which comprises a shell body, clapboards, an oil inlet/outlet joint, a cooling-carrier inlet/outlet joint, and a heat exchanging element assembly, wherein the clapboards are arranged in the shell body in a staggered way to cause oil to flow circuitously; the inlet/outlet joints are arranged on the shell body; the heat exchanging element assembly is fixed in the shell body by a fixing plate and consists of a plurality of aluminum foil fins and copper tube bunches, and the copper tube bunches are triangularly arrayed in a staggered way; a plurality of flanged holes corresponding to the arrangement of copper tubes are punched on each aluminum foil fin; the aluminum foil fins are sleeved on a plurality of arranged copper tubes one by one by the flanged holes and are closely contacted in a tube expanding way; and a plurality of arranged copper tubes are connected in sequence in a bending way, collecting tubes are collected as a cooling-carrier inlet/outlet at both ends of each copper tube respectively, therefore, the design has the advantages of high heat exchanging efficiency, simple and durable structure, high-temperature resistance, low production cost, etc.

Description

Finned oil cooler

Technical field

The utility model relates to the cooling device of oils systems such as hydraulic system, heat-conducting oil system.

Background technology

As heat exchange element, oil flows outside pipe the shell-and-tube oil cooler of Ying Yonging with copper pipe in the market, and water flows in pipe, realizes heat exchange by the copper pipe tube wall.Two kinds of copper pipe beam split tubular type and fin-tube types, light pipe formula copper pipe surface is smooth, and inside and outside heat exchange area is basic identical, so heat exchange efficiency is very low; The fin-tube type copper pipe is to roll out the screw-shaped fin in copper pipe surface, increase the copper pipe surface area with this, difference according to the rolling degree of depth of screw thread fin, area increases 2～5 times not to be waited, heat exchange efficiency than light pipe formula copper pipe improves, but still it is not ideal enough, and copper pipe can produce bigger residual stress in the operation of rolling, add that oil-in is directly facing to copper pipe on the structure, when using, the flow velocity of oil-in place fluid is quite high, and the suffered impact of copper pipe is very big, if residual stress is eliminated the improper phenomenon such as cracking that just might occur.Secondly, the fin-tube type copper pipe is because will be at surface rolling screw thread fin, so tube wall must corresponding increase thickness, and complex manufacturing technology, all corresponding raising of material and production cost.

In addition, above cooler all can only be applicable to worst cold case, generally is no more than 120 ℃.Because it is that form by expanded joint realizes that the copper pipe two ends are connected with the sealing of tube sheet, and the expansion coefficient difference of red copper and steel is very big, when the oil temperature was too high, the difference of swell increment will constantly increase caused the expanded joint place loosening, produced to leak.

The utility model content

The purpose of this utility model is the weak point that overcomes conventional art, proposes a kind of good effect of heat exchange, and is simple in structure, and the dependability height is high temperature resistant, the finned oil cooler that production cost is low.

The technical solution of the utility model is: finned oil cooler, include housing, stagger mutually and be loaded in the housing so that the full of twists and turns mobile dividing plate of oil, be located at the import and export joint of the oil on the housing and the import and export joint of coolant carrier (water, cold-producing medium), and be fixed in heat exchange element assembly in the housing by fixed head, it is characterized in that: the copper pipe that the heat exchange element assembly is arranged by multi-disc aluminium foil fin, stagger arrangement formula triangular in shape, the side plate that gathers pipe and both sides constitutes.Every aluminium foil fin upper punch is made with copper pipe and is arranged corresponding a plurality of flange hole, pack into many row's copper pipes compactly by flange hole aluminium foil fin a slice a slice, simultaneously also to pack into the side plate that has dashed the hole equally in the both sides of aluminium foil fin integral body, be used for and the engaging of housing upper mounted plate, make aluminium foil fin and copper pipe form tight the contact by expansion tube process then.Arrange copper pipes curved in proper order connect and at two ends respectively with gather manifold always as the import and export of coolant carrier to increase the through-current capacity of coolant carrier.Further, for improving rate of heat exchange, the heat exchange element assembly is arranged at and interlaces between the dividing plate of arranging.Housing is rectangular structure, is beneficial to evenly flowing of oil, and can contacts with fin with copper pipe fully.

Such structural design has tangible characteristics:

1, the aluminium foil fin has greatly increased the heat exchange area of copper pipe surface, is more than 5 times of rolled pipe fin copper pipe;

2, the rectangular structure of housing is beneficial to the evenly circuitous mobile of oil, and the aluminium foil fin has guide functions, cooperates the stagger arrangement formula of copper pipe and dividing plate to arrange, and oil can evenly and fully be contacted with fin with copper pipe, and heat exchange efficiency is greatly improved.

3, heat exchange element is to fix by the side plate and the housing that are enclosed within its both sides, is flexible connection, and copper pipe makes two-port all in the same side by crooked circuitous configuration, in the time of can eliminating worst hot case like this because the influence that copper pipe and housing thermal dilation difference are produced.Product was tried out 1 year in the high temperature heat conductive oil system, and 250 ℃ of oily Wen Gaoda use normally, find no situations such as distortion, damage, leakage.

In a word, the utlity model has processing install simple, advantage such as working stability is reliable, and the heat exchange efficiency height is high temperature resistant, and production cost is low.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A profile of Fig. 1;

Fig. 3 is the B-B profile of Fig. 1;

Fig. 4 is aluminium foil fin and the close-connected enlarged diagram of copper pipe.

Among the figure, 1. housing, 2. dividing plate, 3. oil-in, 4. oil-out, 5. aluminium foil fin, 5-1. aluminium foil fin flange hole, 6. copper pipe, 7. side plate, 8. bridge piece, 9. gather the pipe import, 10. gather the pipe outlet, 11. fixed heads, 12. gather the pipe inlet union, and 13. gather the pipe outlet connection

The specific embodiment

Referring to Fig. 1-Fig. 4, the oil cooler of present embodiment mainly is made of housing (1) and heat exchange element assembly two large divisions, its middle shell (1) is regular rectangular structure, solid welding has staggered dividing plate (2) on the interior two side of housing (1), and the outer rear and front end of housing (1) is respectively equipped with oil-in (3) and oil-out (4); The heat exchange element assembly is improved core, the copper pipe bundle (6) that it is arranged by a large amount of aluminium foil fins (5) and stagger arrangement formula triangular in shape constitutes, every aluminium foil fin (5) is gone up a plurality of flange hole (5-1) (showing as Fig. 3) that subpunch is made corresponding arrangement with copper pipe (6), pack into one by one then on many row's copper pipe bundles (6), and the spacing of every aluminium foil fin (5) is the height (showing as Fig. 4) of flange hole (5-1).Also to pack into the side plate (7) that has dashed the hole equally in the whole both sides of aluminium foil fin (5) and make the fixing usefulness of assembly.Aluminium foil fin (5) will carry out the expand tube processing after packing into copper pipe, and copper pipe (6) is closely contacted with aluminium foil fin (5).Then bridge piece (8) is gone up in the welding of each copper pipe (6) order, the two row ports that stay, large diameterly gather pipe (9) and (10) weld mutually with two that have opened corresponding hole count respectively again, the import and export that formation gathers, its effect is the through-current capacity that increases coolant carrier (water or cold-producing medium), and so far the heat exchange element assembly is finished.Upper mounted plate (11) and dividing plate (2) have been welded earlier in the housing (1).When putting into the heat exchange element assembly, its side plate (7) is involutory with the fixed head (11) of housing (1), dividing plate (2) inserts the gap of aluminium foil fin (5), slowly put into until the bottom, in the contact position firm welding of side plate (7) and fixed head (11), seal up base plate then then, and with gather in the pipe welding, jointing (12) and (13) of burn-oning oily jointing (3) and (4) at last and gathering pipe, integral installation is just accused and is finished.Certainly, only enumerated a kind of preferred implementation here, the protection category that other is equal to, structure roughly the same all should belong to this patent repeats no more here.

Claims

1, finned oil cooler, include housing, stagger mutually and be loaded in the housing so that the full of twists and turns mobile dividing plate of oil, be located at the import and export joint of the fluid on the housing and the import and export joint of coolant carrier, and be fixed in heat exchange element assembly in the housing by fixed head, it is characterized in that: the heat exchange element assembly is made of multi-disc aluminium foil fin and the copper pipe of arranging more, every aluminium foil fin upper punch is made with copper pipe and is arranged corresponding a plurality of flange hole, pack into one by one by flange hole aluminium foil fin and to arrange on the copper pipes and expand tube forms tight contact more, arrange more copper pipe curved in proper order connect and at two ends respectively to gather manifold always as the import and export of coolant carrier.

2, oil cooler according to claim 1 is characterized in that the heat exchange element assembly is arranged between the staggered mutually dividing plate.

3, oil cooler according to claim 1 is characterized in that housing is rectangular structure.

4, oil cooler according to claim 1, the spacing that it is characterized in that being set between the every aluminium foil fin on the copper pipe is the flange height in flange hole.

5, oil cooler according to claim 1, the arrangement mode that it is characterized in that copper pipe are triangle stagger arrangement formulas.