CN2762044Y

CN2762044Y - Injection moulded reverse flow or cross flow plate type air heat exchanger

Info

Publication number: CN2762044Y
Application number: CNU2003201033512U
Authority: CN
Inventors: 张洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-14
Filing date: 2003-11-14
Publication date: 2006-03-01
Anticipated expiration: 2013-11-14

Abstract

The utility model relates to a counterflow or cross flow plate type air heat exchanger formed by injection molding, which relates to the structure and the manufacturing method of an air-air heat exchanger with sealed running, and is mainly used for the heat recovery of air-air heat exchange. The shape of the utility model is a cube or a suitable polyhedron which is formed from a plurality of layers of passages which are mutually isolated, wherein each layer of passage is composed of brackets and a heat conduction interlayer between the brackets. The heat exchanger structure which is difficult to form is simplified into simple assembling elements by the aluminum foil which is manufactured in advance and is provided with a punching chamfer and a plastic frame formed by injection molding. Hardware punching members and the injection molding components are in a plurality of layers of structures which are mutually matched in the three-dimensional space, and the hardware punching members and the injection molding components form a composite structure with the characteristics of a mutual fastening type and a casing-body matching type when the hardware punching members and the injection molding components are assembled, wherein the three-dimensional convex-concave structure ensures the exact space positioning, the mutual locking, the edge sealing and the opening closing of the heat changer when the heat exchanger is integrally assembled. Simultaneously, a specially sealed counterflow passage or a specially sealed cross flow passage required by the physic characteristic of the heat exchange is formed.

Description

The adverse current or the flat air heat exchanger of cross-current of injection moulding assembling moulding

Technical field

The utility model relates to a kind of structure and manufacture method of carrying out the heat exchanger of exchange heat between fluid, be applicable to the exchange heat between the gas-gas, solution-air, liquid-liquid of closed operation, be mainly used in the fresh-air ventilation air-conditioning system and the heat recovery preheating heat water system of band heat recovery, what stress in particular is that it makes complicated heat exchanger moulding create simple and reliable low cost assembling from inlaying the cellular construction that agrees with.

Background technology

At present, the known gas-gas heat exchanger of closed operation that is applicable to mainly contains runner heat accumulating type and dull and stereotyped adverse current or cross-current exchange type.Flat heat exchanger has the advantages that the efficient height does not have cross pollution, and its moulding pattern has multiple.Plate-type exchanger generally is made of three parts: the one, and the dividing plate of a plurality of separation fluid layers, the 2nd, the supporter between every layer of dividing plate, the 3rd, at the vertical direction different layers respectively on limit, the left and right sides or the passage of front and rear side sealing to form cross-current or adverse current, the interior fluid at differing temperatures of adjacency channel is carried out exchange heat by interlayer board like this.Though cascade type flat plate heat exchanger principle is simple, known various moulding styles and technology all exist precision of manufacturing process and require highly, need bonding, soldering, the manual difficulty of making, problem such as mechanical production devices costliness, heat exchanger effectiveness are low.

Exemplify the molding mode of known various cascade type flat plate heat exchangers and difficulty that processing technology is not difficult to find out its manufacturing below with not enough:

Figure 13 is a kind of calcium-plastic board section bar of extrusion moulding, material is a high molecular synthetic material, requirement has high thermal conductivity and antistatic behaviour, parts 101 and parts 102 gauges are in 0.2mm, parts 101 are that up and down LAYER FLUID is carried out the interface of exchange heat, parts 102 support two-layer 101 parts up and down, and also playing the closed flow effect simultaneously is that fluid can only its vertical direction fluid can not pass along the tube wall direction is mobile.Figure 14 intersects 90 ° of heat exchangers that alternatively layered stacks, bonds and form with the section bar among a plurality of Figure 13.Extrusion die less than the 0.1mm wall thickness is difficult in low-cost realization down with many material blend extrusion moulding.A plurality of Figure 13 section bars of while are assembled into Figure 14 heat exchanger need be bonding with viscose glue, and this has just formed double-deck interface between the levels fluid, and thermal conductivity reduces half.The more important thing is very poor also very difficult raising of thermal conductivity of plastics and viscose glue, be unfavorable for obtaining high heat exchanger effectiveness, exist heat exchanger effectiveness low so extruded profile is made heat exchanger, the problem that complete extruder is with high costs.

Figure 15 is the lamina that the wave corrugated sheet is bonding with flat board or be welded into, and middle wave corrugated sheet (104) plays the effect of support and separating flow tract.The material of section bar can be pretreated fibrous paper or aluminium foil, and parts 103 and parts 104 gauges are less than 0.1～0.3mm.The crossing 90 ° of alternatively layereds of a plurality of Figure 15 lamina section bars stack, bond and can become Figure 16 heat exchanger.For guaranteeing heat exchanger effectiveness, the thickness of fibrous paper or metal (aluminium) paper tinsel as thin as a wafer, its length-width ratio quantity with flat board is differential more than thousand times, the more important thing is needs hundreds of layers stack, the sizing of the vertical direction of plant equipment and pressure controling precision requirement are very high when stack, bonding forming heat exchanger like this, are difficult to low-cost production.The temperature of adhesive and speed are difficult to control when simultaneously multi-layer bonded.Because a heat exchanger reaches up to a hundred layers of bonding the forming of lamina stack, there is not the fixing preceding large-area aluminium foil as thin as a wafer of applying glue to be easy to plastic deformation, so the hand paste assembling can't realize.

Figure 17 is that laminated aluminium foil is folded mutually, and the neighbouring aluminium foil of vertical direction replaces flanging at the edge and seals, and parts 105 seal for the flanging of the odd-level left and right sides, and parts 106 seal for even level front and back flanging.For guaranteeing heat exchanger effectiveness, the thickness of aluminium foil is less than 0.1mm, and length and width are greater than 200mm, and mechanical precision requires very high in the time of multilayer flanging moulding, get material, feeding, location, support, exert pressure, bond and to be difficult to low-cost production with expensive high-accuracy mechanical equipment.Because a heat exchanger reaches up to a hundred layers of lamina stack and is formed by connecting, aluminium foil as thin as a wafer is easy to plastic deformation, so can't the manual production manufacturing.

Summary of the invention

Flat air-air heat exchanger is formed by stacking in the vertical direction combination by the heat conduction thin plate of hundreds and thousands of Zhang Houdu 0.1mm magnitudes and the above magnitude of length and width hundreds of millimeter, need form the air channel of not ganging up mutually at the front and back and the left and right directions of horizontal plane simultaneously.Though cascade type flat plate heat exchanger principle is simple, but because moulding material (0.1mm) as thin as a wafer, area big (length and width are all more than the hundreds of millimeter) adds quantity big (hundreds of is opened a thousand sheets), exists the great difficulty of moulding style and manufacture method in the time of combination forming.Because thickness and its planar dimension of moulding material exist googol magnitude difference, get the mechanical production devices that material, feeding, location, joint all need high accuracy, complex and expensive in the time of the combination assembling, hand assembled can't be finished.

The present invention dissolves the heat converter structure of complexity and is some simple minimal circulation modules, these minimal circulation modules combine (Fig. 4) by the aluminium foil (Fig. 3) of the trimming chamfering of producing in advance and the plastic frame (Fig. 2) of injection mo(u)lding, form final heat exchanger (Fig. 1) by these minimal circulation modules again.So just the difficult points such as high accuracy control of the vertical and horizontal location of the high accuracy that the heat exchanger one-shot forming is needed, activating pressure are decomposed into the prefabricated component making of low complex degree, these prefabricated components all have and agree with mutually and mosaic texture, aluminium foil (Fig. 3) and plastic stent (Fig. 2) have the structure on self-align, self-locking, self-enclosed border when can accomplish heat exchanger general assembly moulding, only need during assembling to realize high accuracy, low-costly and in high volume air-air heat exchanger manufacturing with simple device or manual can finishing.

Five metals of the present invention towards part and articles injection-moulded be multilayered structure on three dimensions, forming with double buckle form and shell-body fit form assembling the time mutually is the combining structure of characteristics.Three-dimensional convex-concave structure on these minimum units has guaranteed that accurately locate in the space of heat exchanger integral installation timing, locking mutually, and has guaranteed the special closed flow that the heat exchanger physical characteristic needs.

The technical solution of the utility model comprises that the first step makes the plastic frame (Fig. 2) of minimum unit 1-injection mo(u)lding of heat exchanger and the minimum unit 2-trimming chamfering aluminium foil (Fig. 3) of heat exchanger in advance, minimal circulation module (Fig. 4) during second step constituted by two minimum units 1 of assembling and two minimum unit 2 formation heat exchanger integral body, Figure 12 is the explosive view of this assembling process, and the 3rd goes on foot the final assembling of second step that circulates repeatedly forms plate-type exchanger (Fig. 1).

Prefabricated component minimum unit 1 (Fig. 2)-plastic frame is a three-decker: parts 8 play the aluminium foil that support to cover thereon and the effect of separating flow tract at intermediate surface, and promptly fluid can only flow along 8 direction, and the air-flow of the direction perpendicular to 8 will be blocked; Parts 5 are the projecting strip part branch of lower floor; Parts 4 are the plastic strip on upper strata, and wherein fluted (parts 6) this groove forms the double buckle structure with parts 5 and inlays mutually and agree with when plastic stent assembles up and down, and parts 4 link together discrete parts 8 simultaneously; Parts 7 are the hollow hole post of the double buckle structure on the parts 4, and the parts 7 when plastic stent assembles up and down on the different support are inlayed mutually and agreed with.Minimum unit 1 (Fig. 2) has following several key feature: when 4 plastic stents intersected assembling up and down in twos, parts 5 were mother-son mouth structures with parts 6, play location and closing in effect; Parts 7 also are the double buckle structures with parts 7, play location and the final effect of being locked; The inboard of the outside of parts 3 and parts 4 is recalled and is close to, and clamps to be embedded in parts 11 and parts 12 therebetween.The mutual location between aluminium foil and the support, fixing and closing in edge sealing have so just been finished.

Prefabricated component minimum unit 2 (Fig. 3)-trimming chamfering aluminium foil is similarly three-decker: it is whole, and the both sides of left and right directions are the trimming chamfering (11) that makes progress in order to be positioned at the aluminium foil plane (10) in intermediate layer, and the both sides of fore-and-aft direction are downward trimming chamfering (12).(Figure 12) parts 11 and parts 12 built in items 6 during assembling, and pushed down by parts 5 are finished the locking edge sealing of double buckle, form closed flow, stop mixing of air-flow 1 (1) and air-flow 2 (2) fully.Minimum unit 2 (Fig. 3) has following several key feature: the shape and structure of whole aluminium foil guarantees that it just in time embeds among the gap that stays after the assembling of levels plastic stent; The structure of parts 11 and parts 12 makes aluminium foil embed on the border in the double buckle that the parts 5 of plastic stent and parts 6 form, and the location when reaching aluminium foil and install with this, fixing and edge sealing close up.

The assembled formation of minimal circulation module (Fig. 4) according to Figure 12 order is: prefabricated component minimum unit 2 (Fig. 3) keeps flat, cover a prefabricated component minimum unit 1 (Fig. 2) on it, cover a prefabricated component minimum unit 2 (Fig. 3) on it again, elder generation was around its vertical axis half-twist when but this prefabricated component was installed, cover a prefabricated component minimum unit 1 (Fig. 2) again on it at last, elder generation was around its vertical axis half-twist when this prefabricated component was installed equally.

The final heat exchanger (Fig. 1) that assemble has been because the structure of parts 3 to 12 has not only guaranteed the separation of physical features-flow channel space that the heat exchanger function needs, realized simultaneously the heat exchanger assembling need architectural feature-self-align, lock certainly and fastening receipts limit.

The utility model is by making the standard middleware that some have structure in advance, dissolved the moulding difficult point of integrated heat exchanger, by simple combination assembling, utilize function and structures such as self-align, the self-locking of prefabricated component, self-enclosed border, realize high accuracy, air-air heat exchanger manufacturing low-costly and in high volume, ben is that these inlay the structure of agreeing with mutually.

Description of drawings

Fig. 1 is the stereogram of the heat exchanger of embodiments of the present invention 1.

Fig. 2 is the stereogram of the prefabricated component minimum unit 1-plastic frame of pie graph 1.

Fig. 3 is the stereogram of the prefabricated component minimum unit 2-trimming aluminium foil of pie graph 1.

Fig. 4 is the stereogram of two Fig. 2 and two Fig. 3 entities minimal circulation module of formation after the staggered stack of vertical direction.

Fig. 5 is the front view of the plastic frame unit of pie graph 2.

Fig. 6 is the side view of the plastic frame unit of pie graph 2.

Fig. 7 is the top view of the plastic frame unit of pie graph 2.

Fig. 8 is the upward view of the plastic frame unit of pie graph 2.

Fig. 9 is the front view of the trimming aluminium foil unit of pie graph 3.

Figure 10 is the side view of the trimming aluminium foil unit of pie graph 3.

Figure 11 is the top view of the trimming aluminium foil unit of pie graph 3.

Figure 12 is two Fig. 2 of pie graph 4 and the explosive view of two Fig. 3 assemblings.

Figure 13 is a kind of calcium-plastic board section bar stereogram of extrusion moulding.

Figure 14 is the heat exchanger stereogram after stacking with the crossing 90 ° of alternatively layereds of the section bar among a plurality of Figure 13.

Figure 15 is the lamina unit stereogram that the wave corrugated sheet is bonding with flat board or be welded.

Figure 16 is the heat exchanger stereogram after stacking with the crossing 90 ° of alternatively layereds in the unit among a plurality of Figure 15.

Figure 17 is that laminated aluminium foil is folded mutually, and the neighbouring aluminium foil of vertical direction replaces the heat exchanger stereogram that formation is sealed in flanging at the edge.

1. heat exchanger airflow directions 1 among the figure, 2. the heat exchanger airflow direction 2,3. the outermost of plastic frame supports and isolates the air channel bar, 4. the groove part of the double buckle structure of plastic frame locking trimming aluminium foil, 5. the projecting strip part branch of the double buckle structure of plastic frame locking trimming aluminium foil, 6. the groove of the double buckle structure of plastic frame locking trimming aluminium foil, 7. many plastic frame levels are self-align, hollow hole post from locking and overall double buckle structure of fixing, 8. the non-outermost of plastic frame supports and isolates the air channel bar, 9. the fillet termination of air channel bar is isolated in the support of plastic frame, 10. trimming aluminium foil unit main body, 11. trimming aluminium foil unit to upper overturning, 12. the downward flange of trimming aluminium foil unit, 101. horizontal dividing walls, 102. perpendicular separation supporting walls, 103. horizontal dividing wall, 104. wave is isolated supporting walls, 105. odd-level left and right sides flanging are sealed, and flanging is sealed before and after 106. even levels.

Embodiment 1

Fig. 1 is the stereogram of embodiment of the present invention 1, promptly flat air-air heat exchanger.Fluid 1 flows through in runner 1 (1), and fluid 2 flows through in runner 2 (2), and two kinds of fluid at differing temperatures are carried out exchange heat by heat exchanger under the situation that the mass exchange mixing does not take place.Fig. 2 is the stereogram of plastic frame unit, and Fig. 3 is the stereogram of trimming aluminium foil unit.

The first step, produce plastic frame unit (Fig. 2) and trimming aluminium foil unit (Fig. 3), their architectural feature is respectively: parts 4 and parts 5 constitute self-align, from locking double buckle structure, when two plastic frame unit (Fig. 2) assemble up and down, parts 5 will with parts 6 coupling, parts 11 or parts 12 are embedded in the parts 6, parts 3 will with the inboard closing of parts 4, parts 7 also are the self-locking double buckle structures of cylindrical hollow, and

parts

8 and 9 are used to support aluminium foil and separate runner.

Second step, and the assembling of minimal circulation body (Figure 12, Fig. 4), whole plate-type exchanger is to be assemblied by a hundreds of plastic frame unit and trimming aluminium foil unit, its minimal circulation body comprises two plastic frame unit and two trimming aluminium foil unit.Concrete installation step is exactly to get a plastic frame unit earlier to keep flat, get a trimming aluminium foil unit again is put on this plastic frame by the groove location with agreeing with, form assembling I, get a plastic frame unit more earlier around its vertical center axis half-twist, lie in assembling I then and go up formation assembling II, here use the self-align of parts 7, get a trimming aluminium foil unit more earlier around its vertical center axis half-twist, lie in then on the assembling II, place the time still utilize groove to carry out location between aluminium foil and the plastic frame, finally promptly form minimal fitting loop body (Fig. 4)

The 3rd step, the second step process that circulates repeatedly, until the design level religion that reaches heat exchanger, pass the centre bore of parts 7 with the entire body fixed bar then after two ends lock, finish the assembling of a heat exchanger.

Embodiment 2

According to the design of heat exchange air-flow trend, specific embodiments of the present invention can be done some corresponding changes to the global geometric shape of basic forming unit.Can be square, can be rectangle, can be hexagon rhombus or polygon, can be that circle also can be oval.These embodiments are the change on the geomery, change be the physical function characteristic of the needs of heat exchanger, do not change the structure function characteristic, so no longer launch explanation.

Claims

1. the adverse current or the flat air heat exchanger of cross-current of moulding are assembled in an injection moulding, comprise hundreds and thousands of heat conduction baffle, the supporter between the dividing plate different openings directions compositions different of separating fluid layer with vertical each layer, the three-decker of agreeing with mutually and inlaying each other during the plastic stent assembling of aluminium foil that is characterised in that the trimming chamfering of the present utility model and injection mo(u)lding, the aluminium foil of trimming chamfering and the plastic stent of injection mo(u)lding be shell-body structure each other, and support and support be the double buckle structure each other.

2. the adverse current or the flat air heat exchanger of cross-current of moulding are assembled in the described injection moulding of claim 1, it is characterized in that comprising the aluminium foil of a large amount of trimming chamferings, each aluminium foil spatially is a three-decker, four limits have been washed into respectively to upper overturning chamfering and downward flange chamfering (11,12), the gap of reserving when the shape of trimming chamfering just in time caters to two layers of plastic holder combination up and down (5,6) is in order to form the fixing of aluminium foil border and to close up.

3. the adverse current or the flat air heat exchanger of cross-current of moulding are assembled in the described injection moulding of claim 1, it is characterized in that comprising the plastic stent of a large amount of injection mo(u)ldings, each plastic stent spatially is a three-decker, the intermediate layer of each plastic stent is by being positioned at a plurality of plastic strips (3 that are arranged in parallel on the same aspect, 8) form, these plastic strips play a part to support aluminium foil up and down, form the runner of isolating simultaneously.

4. the adverse current or the flat air heat exchanger of cross-current of moulding are assembled in the described injection moulding of claim 1, it is characterized in that comprising the plastic stent of a large amount of injection mo(u)ldings, each plastic stent spatially is a three-decker, the upper strata of each plastic stent is made up of two plastic strips, fluting (6) in the middle of this plastic strip (4), these fixedly connected all middle levels, plastic strip below isolate air channel bar (9,8,3), make these discrete middle levels isolate air channel bars form one fixing whole, have the hollow hole post (7) of double buckle structure locate when being used to assemble and fix simultaneously at the two ends of plastic strip.

5. the adverse current or the flat air heat exchanger of cross-current of moulding are assembled in the described injection moulding of claim 1, it is characterized in that comprising the plastic stent of a large amount of injection mo(u)ldings, each plastic stent spatially is a three-decker, the lower floor of each plastic stent is made up of the outstanding bar of two plastics, these plastics can embed groove (6) when giving prominence to bar (5) assembling, outstanding bar of these plastics and parts 4 during assembling, parts 6, parts 11, parts 12 1 work, the common mutual location that forms aluminium foil and support, locking, the structure of edge sealing, and form the different gas channel of direction of the mutual isolation that heat exchanger needs simultaneously.

6. the adverse current or the flat air heat exchanger of cross-current of moulding are assembled in the described injection moulding of claim 1, it is characterized in that whole heat exchanger comprises the aluminium foil of trimming chamfering of a large amount of same structures and the plastic stent of injection mo(u)lding, the cycling element of minimum is to intersect assembly with the aluminium foil of spline structure and plastic stents by the horizontal direction rotation by two or four to form during combination, integrated heat exchanger is formed by a large amount of this minimal circulation unit combination, and this overall structure does not adopt hot melt, method such as viscose glue or soldering reaches aluminium foil, mutual location during the assembling of support, fixing and edge sealing closes up.