CN2300077Y

CN2300077Y - Welded copper tube aluminum fin tube

Info

Publication number: CN2300077Y
Application number: CN 97215379
Authority: CN
Inventors: 高元运; 钱熙
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-29
Filing date: 1997-04-29
Publication date: 1998-12-09
Anticipated expiration: 2007-04-29

Abstract

The technology belongs to the application field of a heat exchanger and solar energy, relating to a welded copper tube aluminum fin tube. The aluminum surface of the position that aluminum fins are welded with the copper tube are combined with superficial red copper foil material used for welding. The fin tube with the structure reserves the existing chemical property and voltage endurance capability of the copper tube, as well as achieves the purpose of the metallurgical bond of tube and the fins, and the utility model has the advantages of low mounting cost and low equipment price. The utility model can be used for a plane type solar heat absorbing plate, the evaporator of a refrigerator, the condenser of a refrigerator, and can be used in the places that the copper tube aluminum fin is used as a heat exchanger.

Description

Welded copper tube aluminum fin tube

The utility model belongs to heat exchanger and Application of Solar Energy technology

Wing tube mainly has four aspects to require in the application, to it：One is the chemical property that inside pipe wall will have stabilization to working medium；Two is that the pressure that pipeline is applied to working medium will have enough bearing capacitys；Three is to have enough heat-exchange capacities；Four is to have cheap price.In addition to certain special occasions, in the design, manufacture typically in wing tube, all carried out by this four aspects requirement.The appearance of copper-tube aluminium wing finned tube, is exactly the embodiment of this four aspects requirement.

The existing copper-tube aluminium wing finned tube for being applied to solar heat absorption plate and evaporator of electric refrigerator etc., is all using four kinds of method manufactures such as Copper-Aluminum compound, copper aluminium mechanical bond, copper aluminium heat conduction glue bond and copper aluminium high frequency soldering in manufacture.Thermal resistance is zero between the wherein wing tube of Copper-Aluminum compound, inner-walls of duct stable chemical nature, pipe wing.But runner is not enough to the bearing capacity of working medium.Copper aluminium mechanical bond and copper aluminium are with the wing tube of heat conduction glue bond, chemical stability and ability of the runner to working medium, although the thermal resistance all maintained between the original property of copper pipe and ability, but their pipe wings is big.The wing tube of copper aluminium high-frequency soldering station, in terms of the chemical property and pressure-bearing of runner, also maintains the original property of copper pipe and bearing capacity, but the weld seam surrounded between the aluminium sheet and copper pipe of copper pipe for bonding wire is connected.With by institute's alclad sheet, compared with the face of comprehensive soldering between copper pipe connects, then the thermal resistance of line connection wants the thermal resistance that specific surface is connected big, and it is low that its fin efficiency specific surface is connected.

The utility model, provides a kind of copper and aluminium welding and closes mode in what, obtains so that copper pipe can retain original chemical property and voltage endurance capability, and bonding area can again increased, and thermal resistance between pipe wing is reduced into zero；And can reach the cheap purpose of frock, cost of equipment.

The main practice of the present utility model is as shown in drawings：First by the red copper foil 2 of the remote small what aluminium strip 1 of thickness, the method rolled with spreading is compound on aluminium strip 1, reaches metallurgical binding.The size of red copper foil, area determines according to needed for welding.For solar heat absorption plate, cornerite is 120 ° -180 °.After aluminium strip Copper Foil is compound, then cornerite (such as Fig. 1) or drawing punching (such as Fig. 3) are extruded on Copper Foil material, be engaged with copper pipe 4, then completed with the weldering of cored solder 3.Fig. 2 is to flatten the side of copper pipe 4, and soldering is on Copper Foil.

One size of solar heat absorption plate embodiment is as shown in Figure 1.Wherein Copper Foil material 18mm wide, thickness 0.1mm.Using 6337 or 8515 plumber's solder solderings.Fig. 2, Fig. 3 are the schematic diagram of the wing tube with what evaporator of electric refrigerator and condenser.

The utility model, as long as there is one

After be combined for aluminium strip Copper Foil by 300 or so precise cold milling train, so that it may equally produced with conventional full copper wing tube.

Claims

1. a kind of copper-tube aluminium wing finned tube, on contour structures is identical compared with existing copper-tube aluminium wing finned tube, and its feature is compounded with the red copper foil of area needed for welding in the aluminium surface in place of what copper pipe and the welding of aluminium wing.

2. Welded copper tube aluminum fin tube according to claim 1, it is characterized in that：The compound Copper Foil material of aluminium surface reaches metallurgical binding.

3. Welded copper tube aluminum fin tube according to claim 1, it is characterized in that：When wing tube is used as solar heat absorption plate bar application, what its wing middle part matched with copper pipe appearance is garden cambered surface that angle is 120 ° -180 °, or the pressing of pipe external portion a plane.