CN201706939U

CN201706939U - Parallelogram folding fin for heat exchanger

Info

Publication number: CN201706939U
Application number: CN201020216849XU
Authority: CN
Inventors: 江秋良; 郏桂红; 杨建权; 张爱华; 刘友明
Original assignee: JIANGSU KANGTAI HEAT CHANGE EQUIPMENT ENGINEERING CO Ltd; JIANGSU KANGTAI HEAT CHANGE EQUIPMENT ENGINEERINGCO Ltd
Current assignee: JIANGSU KANGTAI HEAT CHANGE EQUIPMENT ENGINEERING CO Ltd; JIANGSU KANGTAI HEAT CHANGE EQUIPMENT ENGINEERINGCO Ltd
Priority date: 2010-06-04
Filing date: 2010-06-04
Publication date: 2011-01-12
Anticipated expiration: 2020-06-04

Abstract

The utility model belongs to the technical field of heat exchanger manufacturing, and relates to a parallelogram folding fin for a heat exchanger, which is characterized in that a flat tube between two collecting pipes is deployed in an inclined way; the straight line sections on the upper side and the lower side of the fin and the whole wide of the flat tube closely contact with each other and are fixedly connected by braze welding; and the vertical section of the fin in the width direction of the flat tube is in a parallelogram. The parallelogram folding fin for the heat exchanger has the beneficial effects that not only the drainage problem of the all aluminum braze welding heat exchanger is solved but also the straight line parts on the upper side and the lower side of the fin fully support the width of the whole flat tube which is deployed in the inclined way, the contacting area between the flat tube and the fin is increased under the conditions of the same windward area and equal width of the flat tube, the heat exchange performance is correspondingly improved and the pressure resistant capability is strengthened, simultaneously the fin and the flat tube has a public installation datum plane and the assembly of a heat exchanger core body is simple and feasible.

Description

A kind of heat exchanger parallelogram fold fin

Technical field

The utility model belongs to heat exchanger manufacturing technology field, relate to the decline heat exchange fin of channel heat-exchanging of a kind of full aluminium soldering, relate in particular to a kind of heat exchanger parallelogram fold fin, it and place the flat tube coupling combination that is in tilted layout between two headers, after soldering, form and be beneficial to condensed water and discharge the unlikely heat exchanger core that accumulates.

Background technology

Existing full aluminium soldering formula heat exchanger core is a kind of efficient heat exchanger that adopts full aluminum to make, it conducts heat by many groups flat tube and the fold fin that has shutter, significantly improved heat exchange efficiency, also have clear superiorities such as consumptive material is few, cost is low, voltage endurance capability is strong simultaneously, increasingly extensive in the application in family expenses and business air conditioner field.But up to now, the above-mentioned full aluminium soldering channel heat-exchanging that declines can only be applied on the condenser (off-premises station) of single cold air-conditioning, because this moment, condenser was the heat exchange duty, evaporated condensation water produces.

And the evaporimeter of air-conditioning (indoor set) is under refrigeration mode, or the condenser of heat pump air conditioner (off-premises station) is when moving under heating mode, all can produce condensed water on the heat exchanger.Existing micro channel heat exchanger flat tube mostly is horizontally disposed, and the fin of windowing of fold shape is connected with the flat tube soldering in two flat sides up and down of flat tube.After the little circular arc in bottom of fin is in ponding because fold shape is windowed, pass the air-flow (air velocity of family expenses and business air conditioner generally is no more than 3m/s) of core body, can't make condensed water shake off its capillary effect, can not allow condensed water from fin, all flow out and cause condensed water to be assembled.Along with the operation of system, the condensed water of these accumulations freezes frosting, influences ventilation heat exchange, and then influences the normal operation of system.Even if after system's operation defrost pattern, condensed water can't be discharged equally.Existing micro channel heat exchanger can't be applicable to the evaporimeter (indoor set) of single cold air-conditioning and the air-conditioning system of pump type heat because have defective as mentioned above, has greatly limited its application.

At defective as above, solution is at present: the flat tube between two headers is in tilted layout by horizontally disposed changing into, and rectangular configuration fin and flat tube arranged perpendicular also are that rectangular fin tilts with flat tube.Like this, the component of gravity adds the thrust sum of windward, can make condensed water shake off its capillary effect and be discharged to outside the fin, has solved the drainage problem of the full aluminium soldering formula heat exchanger of flat tube horizontal arrangement.But a side of flat tube in this kind structure (among Fig. 3 6) just with the non-finned support, causes three open defects thus: the one, and the contact area of fin and flat tube is few, and heat exchange property will weaken; The 2nd, a side of flat tube does not have the fin support, and the voltage endurance capability of flat tube descends; The 3rd, fin and flat tube do not have common plane (common reference plane 7 shown in no Fig. 2 or Fig. 4 among Fig. 3), and the assembly difficulty of core body is big.

The utility model content

The purpose of this utility model is: be the heat exchanger that flat tube tilts to arrange between the header, a kind of fold fin of parallelogram is provided, when solving condensed water discharge problem, solve aforesaid three defectives.

For achieving the above object, adopt following technical scheme: a kind of heat exchanger parallelogram fold fin, it is characterized in that: the flat tube between two headers is in tilted layout, the straightway of both sides up and down of fin closely contacts with the whole width of flat tube, soldering is connected and fixed, the plumb cut parallelogram of described flat tube width fin.

With respect to the prior art rectangular fin, good effect of the present utility model is: the drainage problem that has solved full aluminium soldering formula heat exchanger, and do not increasing substantially under the raw-material prerequisite, make the last following straight line portion of fin support the whole flat tube width that is in tilted layout fully, like this under same front face area, equal flat tube width conditions, the contact area of flat tube and fin increases, the corresponding raising of heat exchange property; Because of fin has extended to the edge of flat tube side always, because the support of fin, the voltage endurance capability of flat tube of heat exchanger strengthens; Simultaneously, fin and flat tube have the common mounting datum level, and the assembling of heat exchanger core is simple.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is full aluminium soldering formula heat converter structure schematic diagram;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view (rectangular fin, horizontal flat tube);

Fig. 3 is a rectangular fin inclination flat tube heat converter structure schematic diagram;

Fig. 4 is the utility model inclination flat tube parallelogram fin heat exchanger structural representation.

Among the figure, the 1-blanking cover; The 2-header; The 3-flat tube; The 4-fin; 5-windows; 6-flat tube side; The 7-datum level.

The specific embodiment

Fig. 1 is full aluminium soldering formula heat converter structure schematic diagram, existing as seen from the figure full aluminium soldering formula heat exchanger core by two be parallel to each other, vertically disposed hollow header 2, place the blanking cover of hollow header 2 ends, be crossed on two many groups flat tubes 3 between the header 2 abreast, and weld fixing fold fin 4 with many groups flat tube and form, heat exchanger core conducts heat by many groups flat tube 3 and the fold fin 4 that has shutter.

Fig. 2 be the A-A of Fig. 1 to cutaway view (rectangular fin, horizontal flat tube), exist condensed water residual in fin, can't discharge problem.Fig. 3 also is a prior art, and Figure 1A-A is to, rectangular fin inclination flat tube heat converter structure schematic diagram.Though this structure has solved the condensed water of the full aluminium soldering formula heat exchanger of flat tube horizontal arrangement and discharged problem, but a side of flat tube in this kind structure (among Fig. 3 6) below non-finned support causes three open defects described in the background technology thus.

Fig. 4 is the utility model inclination flat tube parallelogram fin heat exchanger structural representation.As seen from the figure, a kind of heat exchanger parallelogram fold fin, it is characterized in that: the flat tube 3 between two headers 2 is in tilted layout, the straightway of both sides up and down of fin 4 closely contacts with flat tube 3 whole width, and soldering is connected and fixed the plumb cut parallelogram of described flat tube 3 width fins 4.

Fig. 4 fin 4 contacts on whole width fully with flat tube 2, comprises flat tube side 6, so 4 pairs of flat tubes of fin 3 have carried out comprehensive support, and voltage endurance capability obviously strengthens than structure shown in Figure 3; Fin 4 is bigger than rectangular fin inclination flat tube contact area shown in Figure 3 with the contact area of flat tube 3, and heat exchange property is also corresponding to be strengthened than structure shown in Figure 3, and Fig. 2 is suitable with prior art; Simultaneously, the utility model parallelogram fin has filled up the whole space of flat tube 3 with mounting plate, and flat tube 3 has identical datum clamp face 7 with fin 4, is convenient to location and the assembling of fin 4 on assembly machine.

Described fin can be with and window 5, also can not have and windows.

Present embodiment adopts earlier and strikes out the shape that parallelogram fold fin is received wavefront by mould, by behind the special equipment receipts ripple, forms parallelogram fold fin naturally again.By craft or automatic assembling machine, make fin 4 and flat tube 3 combinations, again after the both sides of flat tube 3 are packed header 2 into, form heat exchanger core, fix with the combination of header 2 by brazing jig clamping realization fin 4, flat tube 3, after the soldering oven soldering of special use, make heat exchanger.

By above analysis as can be known, the utility model patent is when solving conventional full aluminum heat exchanger drainage problem, and its heat exchange property, resistance to pressure, assembling capacity do not change, for the expansion of the range of application of full aluminum heat exchanger provides solution route.

Claims

1. a heat exchanger is with parallelogram fold fin, it is characterized in that: the flat tube between two headers is in tilted layout, the straightway of both sides up and down of fin closely contacts with the whole width of flat tube, and soldering is connected and fixed, the plumb cut parallelogram of described flat tube width fin.