CN100398971C - Superfine pipeline heat exchanger - Google Patents

Abstract

The present invention relates to an arrangement structure of heat radiating fins, which is used for easily discharging condensed water coagulated on the surfaces of heat radiating fins. The superfine pipeline heat exchanger of the present invention is characterized in that the heat exchanger is composed of a level header pipe, a plurality of vertical refrigerant pipes, and heat radiating fins, wherein the level header pipe enables refrigerants to flow through; the vertical refrigerant pipes inserted in the level header pipe enable the refrigerants flowing in the level header pipe to be allocated; the heat radiating fins are installed among the vertical refrigerant pipes. In the heat exchanger, a plurality of heat radiating fins are installed at certain intervals in gaps among the vertical refrigerant pipes. The superfine pipeline heat exchanger with the installed heat radiating fins of the present invention has the advantages that the superfine pipeline heat exchanger can easily discharge the condensed water flowing down from the upper parts of the refrigerant pipes, the atmospheric pressure loss of the air flowing under the action of a fan can be reduced, and the heat conducting quantity can be prevented from being reduced.

Description

Ultra-fine pipeline thermal interchanger

Technical field

The present invention relates to the arm structure of a kind of ultra-fine pipeline (micro channel) heat exchanger (Micro Channel HeatExchanger), it can be discharged the condensed water that condenses in fin surface smoothly.

Background technology

Fig. 1 is the side view of the outward appearance of heat exchanger, and Fig. 2 is the exploded view of respectively forming structure of heat exchanger, and Fig. 3 is the profile of the arm among Fig. 2.

Can learn that existing heat exchanger is by constituting with the lower part with reference to above-mentioned accompanying drawing, that is: be positioned at upper header 2 corresponding to the top of lower header 1; Several arms 3 between above-mentioned upper header 2 and lower header 1; Be formed on the fin 6 between above-mentioned each arm 3.In general, in order to improve heat exchanger effectiveness, the fin of sheet material shape is housed on the outer surface that the arm that cold-producing medium flows through is arranged of heat exchanger, can realizes heat exchange to greatest extent by this structure.Above-mentioned lower header 1 cylindrical shape, its inside is hollow, a side that has constituted the outer peripheral portion of its outward appearance has formed several and has been used for inserting and the fixing header aperture 4 of arm 3, and these header aperture 4 along the length direction of lower header 1 at a distance of identical distance.

Have the shape identical with upper header 2 that above-mentioned lower header 1 is positioned at its top accordingly here, with above-mentioned lower header 1.Above-mentioned each arm 3 is separately fixed in above-mentioned each header aperture 4 along the two ends of its length direction, thereby above-mentioned each arm 3 is arranged side by side along the length direction of collector 1,2.

The face that moving air couples together the axis on the length direction of two collectors 1,2 relatively keeps certain ground, angle of inclination to flow, thereby air can flow through the gap of each arm 3 and two collectors 1,2.Above-mentioned arm 3 has certain length, thickness and width, wherein length is meant its distance between the two ends on two collectors 1,2 of being fixed on, thickness be meant its with the flow direction of moving air keep distance on the vertical direction, width be meant it with the direction of the flow direction keeping parallelism of moving air on distance.Above-mentioned arm 3 is at right angles tetragonal tabular, and it has the width and the very thin thickness that can be inserted in two collectors 1,2, and its inside has formed the pipeline (channel) 5 of several hollows.

In addition, above-mentioned each arm 3 is being fixed on two collectors 1,2 with the mode of the flow direction keeping parallelism of moving air on the width with each arm 3.Several pipelines 5 that form on above-mentioned each arm 3 have small sectional area on the direction vertical with the length direction of arm 3, length direction along arm 3 then has certain length, and they are arranged in proper order along the flow direction of moving air.

Be fixed on two collectors 1,2 owing to have the both-side ends of the arm 3 of said structure, thereby above-mentioned arm 3 is connected with the hollow spaces that form in collector 1,2 inside.And, can make the space that moving air flows through and a plurality of fin 6 have been installed in order to form in the gap of above-mentioned each arm 3.Be above-mentioned a plurality of fin 6 owing to be the tabular of very thin thickness, so be installed between each arm 3 with can being bent into several " it " fonts.Though above-mentioned fin 6 can fixedly mount with multiple shape, in general preferably its formed space can make the flow impedance of moving air reach minimum.

Fig. 4 is the side view of installment state of the fin of prior art.

As shown in Figure 4, in the ultra-fine pipeline thermal interchanger that adopts prior art, the fin 6 that is installed between each arm 3 begins till the lower header 1 from upper header 2, it is certain at interval, the condensed water 7 that forms on each fin 6 can compile downwards, and particularly all condensed waters 7 can assemble and be stuck in fin 6 places of below at last.

The moving air in gap that flows through fin 6 this moment is when the fin 6 that flows through near upper header 2, owing to can not produce special flow impedance, so the heat exchange meeting between moving air and the fin 6 realizes smoothly.But, the moving air that flows through the fin 6 of close lower header 1 can be subjected to the effect of king-sized flow impedance, this is to be stuck in this because the periphery of the fin 6 of close lower header 1 has condensed water to flow down and assemble from top, therefore can produce bigger flow impedance.Can there be following problem in this case, that is: because the increase of flow impedance can make that the heat exchange between moving air and the fin 6 can not effectively be carried out, therefore can makes the heat exchange performance variation.

Summary of the invention

The present invention designs in order to solve aforesaid problem, and purpose is to improve the structures such as ordered state of the fin in the ultra-fine pipeline thermal interchanger, thereby the condensed water that condenses in fin surface is discharged smoothly.

The invention provides a kind of ultra-fine pipeline thermal interchanger, heat exchanger is by level header, arm and fin constitute, the level header of hollow flows through cold-producing medium, the cold-producing medium arm that several are vertical, be inserted in the level header, make the cold-producing medium that in level header, flows obtain distributing, fin is installed between the arm, the rear of with certain interval several cooling fins arm both sides being installed in the gap of arm possesses rhone along its length, rhone is more successfully discharged the condensed water that flows down from fin, several single fin constitute one group of fin, and phase across a certain distance between every group of fin on the same arm.

The ultra-fine pipeline thermal interchanger that the present invention does the interval of fin differently can reach following effect: the condensed water that the top from refrigerant pipe can be flow down is more successfully discharged.

The present invention another effect that can reach be: can reduce under the effect of fan and the atmospheric pressure lost of flow air, and can prevent that heat conduction amount from reducing.

Description of drawings

Fig. 1 is the side view of the outward appearance of heat exchanger;

Fig. 2 is the exploded view of respectively forming structure of heat exchanger;

Fig. 3 is the profile of the arm among Fig. 2;

Fig. 4 is the side view of installment state of the fin of prior art;

Fig. 5 a is the side view that the several cooling fins among the present invention is installed in the state on the arm;

Fig. 5 b is the profile of arm of the present invention;

Fig. 6 is the view of the discharge situation of condensed water among the present invention.

The critical piece description of reference numerals

1: lower header (header) 2: upper header

3: arm (tube) 3a: arm

3b: arm rhone 4: header aperture

5: pipeline (channel) 6: fin (pin)

6a, b, c: fin

The specific embodiment

Embodiment to ultra-fine pipeline thermal interchanger of the present invention illustrates in further detail with reference to the accompanying drawings.

Fig. 5 a is the side view that the several cooling fins among the present invention is installed in the state on the arm; Fig. 5 b is the profile of arm of the present invention; Fig. 6 is the view of the discharge situation of condensed water among the present invention.

Can learn with reference to above-mentioned accompanying drawing, different with the structure that single fin only is installed on arm 3 of the prior art, in the present invention, on arm 3 at a distance of certain intervals several cooling fins 6a, 6b, 6c be installed.The condensed water that generates on the surface of each fin can flow down along gravity direction, and these condensed waters 7 can concentrate at each fin bottom, under the effect of the power of moving air, the arm rhone 3b that forms along the downstream part at above-mentioned moving air discharges then.Also promptly, the present invention constitutes one group of fin by several single fin, and phase across a certain distance between every group of fin.

In the prior art, owing to only used single fin, thereby condensed water can flow to fin bottom from fin topmost always, and all at last condensed waters all concentrate at fin place bottom, therefore has some problems aspect the discharge of condensed water.Heat exchanger of the present invention then can solve aforesaid existing in prior technology problem, that is to say because the present invention has adopted by several single fin and constituted one group of this structure of fin, therefore only need the condensed water that concentrates on each fin is discharged processing, just can more effectively condensed water be discharged.

Claims (1)

1. ultra-fine pipeline thermal interchanger, described heat exchanger is by level header, arm and fin constitute, the level header of hollow flows through cold-producing medium, several vertical cold-producing medium arms are inserted in the level header, make the cold-producing medium that in level header, flows obtain distributing, fin is installed between the vertical cold-producing medium arm, in heat exchanger, gap at vertical cold-producing medium arm, with certain interval several cooling fins has been installed, it is characterized in that: the rear of described vertical cold-producing medium arm (3a) both sides has formed rhone (3b) along its length, rhone (3b) is discharged condensed water, several single fin (6) constitute one group of fin (6a, 6b, 6c), every group of fin (6a on the same arm, 6b, phase across a certain distance 6c).

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