CN1236270C - Plate heat exchanger with shaped strip and welded structure - Google Patents

Abstract

The present invention relates to a plate heat exchanger with shaped strips and a welded structure. Every corrugated plate is provided with a high stretched hem having a slight obliquity, and the interior of the hems are all provided with space for placing shaped strips; the shaped strips are made of solid shaped steel, the height of the shaped strips is equal to that of the ridges a single corrugated plate, and the shaped strips are bent into the shape of a space inside the high hems close to the corrugated plates; in the assembling manner of the present invention, shaped strips taking the rigid supporting action at the brazing temperature are arranged inside the high hem of every corrugated plate, the brazing seal on the periphery of the corrugated plates to the outside is ensured by the high hems of the corrugated plates being stacked in an inclined plane so as to form a brazing seal inclined plane and being integrally brazed by brazing materials. The plate heat exchanger is applicable to air conditioning, refrigeration and heat exchange in various forms.

Description

A kind of have type bar and a welded plate type heat exchanger

Technical field of the present invention relates to a kind of heat exchanger, relates in particular to a kind of have type bar and welded plate type heat exchanger.

Technical background: at present, have type bar and welded plate type heat exchanger two kinds of forms are generally arranged, a kind of is to be terminated its Patent right version (91227597.9), all has the type bar on each sheet corrugated cardboard sheet in this kind structure.Another kind be with China " patent of invention " (96103317.7) be the version of representative, have a type bar between per two corrugated cardboard sheets, and adopt integral braze-welded technology manufacturing.In addition, also having a kind of is banding pattern bar not, only has high flange soldering inclined-plane at the corrugated cardboard sheet periphery, adopts integral braze-welded product manufactured.Though these three kinds of plate type heat exchangers respectively have the advantage and the scope of application, and weak point is also all arranged; Be terminated its patent right (91227597.9) though every corrugated cardboard sheet of version on all have the type bar, these type bars are not welded together with corrugated cardboard sheet, the feasibility of its assembling and the reliability of sealing etc. are all undesirable.The weak point of the sort of brazing plate type heat exchanger of banding pattern bar is not; The used raw material of product will be subjected to strict restriction, can not use the sort of under soldering high temperature the more weak material of its intensity make integral braze-welded plate type heat exchanger, otherwise the ripple of heat exchanger will be out of shape because of the compressing of product deadweight under the high temperature of soldering, thereby influences the heat exchange efficiency and the resistance of product.Its main weak point of version that is representative with Chinese " patent of invention " (96103317.7) is; Its type bar height can not be accomplished to be strict controlled on the actual size of two ripple height sums.Though being same set of mould compacting, the ripple height of every corrugated cardboard sheet forms, but its ripple height is subjected to mould and die accuracy to be changed to some extent with the small different of local material of raw material and local material thickness, in these minor variations at random, the ripple height tolerance of single corrugated cardboard sheet generally can satisfy the desired margin of tolerance in joint clearance of brazing, but the stack of two ripple height will enlarge the accumulation effect of this tolerance, even exceeds the tolerance of joint clearance of brazing.And type bar height is difficult to accomplish that it highly can change with the tolerance variation of two ripple height when determining and producing in batches.If type bar height is local a little more than two ripple height, just will cause corrugated cardboard sheet not contact and sealing-off by each contact point of part, thereby will cause product can not pressure-bearing, deform and can't use.Can cause then that a little less than two ripple height the type bar does not contact and sealing-off with the part at corrugated cardboard sheet edge if type bar height is local, product will produce the part and leak outside, and also can't use.Simultaneously, this structure can cause also that to do its bearing capacity of runner of peripheral sealed with brazing with the type bar lower.This structure type bar when assembling is difficult for marshalling, and type bar outward appearance is uneven after the product soldering.In addition, because this structure is between corrugated cardboard sheet, between corrugated cardboard sheet and the type bar, and and forward and backward outer side plate between all exist can relative displacement possibility, easily there are the assembling dislocation in product its endoporus and sealed with brazing face after soldering, even the serious consequence that causes the endoporus product leakage to scrap thus.

Summary of the invention: the purpose of this invention is to provide a kind of novel have type bar and welded plate type heat exchanger.It can satisfy under the temperature of soldering, the material that its elevated temperature strength is lower still can adopt integral braze-welded mode to make the requirement of plate type heat exchanger, simultaneously can also make product have higher bearing capacity and neat outward appearance, avoid causing the leakage of product to scrap because of the possible dislocation of endoporus assembling.Most importantly solution type bar height and ripple height tolerance are difficult for coincideing, thereby cause that the product bearing capacity is low, may cause the problem of product rejection thus.So this constructed products suitable application area is wider, Practical Performance is stronger, and the percent defective of manufacturing process is lower, and profile is neat appearance more.

The object of the present invention is achieved like this; A kind of have type bar and a welded plate type heat exchanger, it comprises: heat transferring medium advances, the outlet ozzle, preceding outer side plate, the outer side plate in back, flat plate, the type bar, solder and corrugated cardboard sheet, utilize the architecture basics that all has the type bar in the version that has been terminated its patent right (91227597.9) on each corrugated cardboard sheet, cancel the assembling form and the Type of Welding of (91227597.9) in this version all other, make every type bar all together integral braze-welded with the plate that it faces mutually, by the multilayer corrugated plate, before, the outer side plate in back, the type bar, flat plate, solder and ozzle are welded into integral body, form netted soldering contact point and medium runner, corrugated cardboard sheet, flat plate between the corrugated cardboard sheet, before, the edge of through hole is welded together mutually on the outer side plate in back, form advancing of different medium, exit passageway is characterized in that: all there is the slightly high stretch flanging of gradient at the periphery place of every corrugated cardboard sheet, and the space of placed type bar is all arranged in the flange, the type bar is a solid profile, it highly equals the ripple height of single plate, and the type bar is bent to the shape near space in the high flange of corrugated cardboard sheet, and its assembling form is; The type bar that plays the rigid support effect under brazing temperature is all arranged in the high flange of each corrugated cardboard sheet, and the external sealed with brazing of plate periphery uses solder through integral braze-welded assurance by the sealed with brazing inclined-plane that the high flange of each plate inclined-plane stacks formation.

The present invention has following advantage and good effect: in this structure, the height of a type bar only cooperates the height of a slice ripple, its assembling effect is more identical, the soldering yield rate is higher, can satisfy the sort of under soldering high temperature the more weak material of its elevated temperature strength with integral braze-welded technology, the requirement of making brazing plate type heat exchanger.And because the type bar in every plate only plays the effect of rigid support to ripple in the brazing process of this structure, directly product is not played the effect of external sealed with brazing, so, type bar height tolerance standard in this structure is not very crucial data, even allow the height of this type bar height a little less than a ripple, to allow the ripple height that a little the cost that steps down to may take place under brazing temperature, guarantee that each contact point of product all can be made product obtain higher bearing capacity by soldering securely together.

With the high flange of plate periphery inclined-plane closed assembly, this inclined-plane of each plate is adjacent to mutually, the type bar is built within the inclined-plane, through integral braze-welded, the inclined-plane of these closed assemblies will form the external sealed with brazing of product, and the area of high flange inclined-plane sealed with brazing and soldering strength will be greater than there not being flange to only depend on the area and the soldering strength of type bar and corrugated cardboard sheet periphery sealed with brazing.This structure is after soldering, and the bearing capacity of different medium runner is identical.It has also avoided each runner bearing capacity difference in (96103317.7) structure, makes the low shortcoming of runner bearing capacity of peripheral sealed with brazing of the type bar.

Because the type bar is built-in and plate leans on the perimeter ramps closed assembly, this structure has also been avoided the deficiencies such as endoporus leakage that the assembling of type bar is uneven, outward appearance is whole, plate assembles mutual displacement, the endoporus mutual dislocation causes.Can make product obtain bigger operating pressure and application widely, make the serviceability of product stronger, percent defective in the manufacturing process is lower, and profile is more attractive in appearance, and is going for multiple welding procedure and multiple material aspect product manufacturing and the selection.

Fig. 1; It is the stereogram of the embodiment of the invention

Fig. 2; It is the transverse sectional view of Fig. 1

Description of drawings: as shown in the figure, it comprises; Heat transferring medium import and export ozzle 1, preceding outer side plate 2, the unrippled flat plate 3 of peripheral high flange, the ripply plate 4 of peripheral high flange, type bar 5, the outer side plate 6 in back, solder 7.

The specific embodiment: in order to guarantee forward and backward outer side plate 2,6 and corrugated cardboard sheet 4 sealed with brazing at the periphery place, outside forward and backward, can respectively place a slice between side plate 2,6 and the corrugated cardboard sheet 4 not with ripple, but have the together soldering of flat plate 3 of same high flange.Also forward and backward outer side plate 2,6 peripheries can be made and have the high stretch flanging that matches with corrugated cardboard sheet 4 flange inclined-planes, cancel unrippled flat plate 3, the forward and backward outer side plate 2,6 that has a high flange directly and corrugated cardboard sheet 4 together integral braze-welded.In addition, under the lower condition of operating pressure, can also cancel forward and backward outer side plate 2,6 and flat plate 3, only be welded into suitable plate type heat exchanger product with corrugated cardboard sheet 4, solder 7, type bar 5 and ozzle 1 etc.

For stability and the unified shape that guarantees plate 3,4 peripheral high flange, guarantee the effect and the soldering strength of plate 3,4 perimeter ramps sealed with brazing, a little flange can also be arranged again at the top, inclined-plane at plate 3,4 peripheral high flange, to strengthen the stability of high flange.

Heat transferring medium advances, outlet ozzle 1 is the internal channel hole with preceding outer side plate 2, or with the internal channel eyelet welding of the outer side plate 6 in back together, or before the cancellation, the outer side plate 2 in back, 6, ozzle 1 directly is welded on the internal channel hole of flat plate 3, or before the cancellation, the outer side plate 2 in back, 6 and flat plate 3, ozzle 1 directly is welded on the internal channel hole of corrugated cardboard sheet 4, its welding method can adopt the melting mode that ozzle 1 is welded one by one, also can adopt at ozzle 1 and between the internal channel hole, adorn the mode that adds solder 7 and integral braze-welded, or two kinds of welding manners use on a product simultaneously with product.

Adjacent corrugated cardboard sheet 4 is when assembling, the mutual 180 ° of intersections of the direction of its ripple angle, each corrugation ridge is linear to reticulate the soldering contact point and forms runner, type bar 5 all is housed in the high flange inclined-plane between every plate does rigid support under the brazing temperature, the installation site of its type bar 5 on each veneer area between the plate do not limit, but the type bar 5 that always is useful on rigid support in the peripheral high flange between plate exists, type bar 5 can be crooked and makes any suitable solid section and shape, adopts integral braze-welded mode to make the plate type heat exchanger with integral braze-welded structure to satisfy product.

Have on plate 3,4 and the forward and backward outer side plate 2,6 and be convenient to integral braze-welded internal channel hole, the position in its hole, shape and quantity are not limit, and internal channel hole, integral braze-welded back requires mutual sealed with brazing, do not allow heat transferring medium to go here and there Lou, mix the chamber mutually.

In addition, it also requires between flat plate 3 and corrugated cardboard sheet 4 and type bar 5, between flat plate 3 and corrugated cardboard sheet 4, comprise between each inclined-plane, at plate 3,4 with before, the outer side plate 2 in back, between 6, comprise that each ripple crestal line contact point and heat transferring medium advance, export each runner through hole and and ozzle 1 between, solder 7 all is housed, adopt integral braze-welded mode, make and respectively assemble contact position equal energy soldering on the product together, last soldering become one non-disconnectable, the inner soldering point network of its product gathers, and because the existence of these solder joints (point) can make product and plate ripple have non-deformability in working environment, can bear high temperature, high-pressure work requires, and has higher functional reliability, the plate type heat exchanger that adopts integral braze-welded technology to make.

This constructed products can realize the form of multipaths and different distances between plates, and heat transferring medium forms crossfire, and stream and mixed flow etc. in runner separately.

Claims (5)

1, a kind of have type bar and a welded plate type heat exchanger, it comprises: heat transferring medium advances, outlet ozzle (1), preceding outer side plate (2), back outer side plate (6), type bar (5), flat plate (3), solder (7) and corrugated cardboard sheet (4), its corrugated cardboard sheet has ripple and through hole on (4), by multilayer corrugated plate (4), before, back outer side plate (2), (6), flat plate (3), type bar (5), solder (7) and ozzle (1) are welded into integral body, form netted resistance brazing point and medium runner between the corrugated cardboard sheet (4), corrugated cardboard sheet (4), before, back outer side plate (2), (6), the edge of the last through hole of flat plate (3) is welded together mutually, form advancing of different medium, exit passageway, all there is the slightly high stretch flanging of gradient at the periphery place that it is characterized in that every corrugated cardboard sheet (4), the space that placed type bar (5) are all arranged in the flange, type bar (5) is a solid profile, it highly equals the ripple height of single plate, type bar (5) is bent to the shape near space in the high flange of corrugated cardboard sheet (4), its assembling form is the type bar (5) that plays the rigid support effect under brazing temperature all to be arranged, plate (3) in the high flange of each corrugated cardboard sheet (4), (4) the external sealed with brazing of periphery uses solder (7) through integral braze-welded assurance by the sealed with brazing inclined-plane that the high flange of each plate periphery inclined-plane stacks formation.

2, outer side plate (2) before plate type heat exchanger according to claim 1 is characterized in that, back outer side plate (6) periphery is made has the high stretch flanging that matches with corrugated cardboard sheet (4) flange inclined-plane, has the direct and flat plate (3) in forward and backward outer side plate (2), (6) of high flange, corrugated cardboard sheet (4) is together integral braze-welded.

3, plate type heat exchanger according to claim 1 is characterized in that the top, inclined-plane of plate (3), (4) peripheral high flange also has a little flange.

4, plate type heat exchanger according to claim 1 is characterized in that having on plate (3), (4) and forward and backward outer side plate (2), (6) and is convenient to integral braze-welded internal channel hole, the position in its hole, shape and quantity are not limit, internal channel hole, integral braze-welded back requires mutual sealed with brazing, does not allow heat transferring medium to go here and there Lou, mix the chamber mutually.

5, plate type heat exchanger according to claim 1 is characterized in that between unrippled flat plate (3) and ripply plate (4) and type bar (5), between flat plate (3) and corrugated cardboard sheet (4), comprise between each inclined-plane, plate (3), (4) and forward and backward outside between the side plate (2), (6), comprise each runner through hole of each ripple crestal line contact point and heat transferring medium import and export and and ozzle (1) between, solder (7) all is housed, adopt integral braze-welded mode, make and respectively assemble contact position equal energy soldering on the product together.