CN2480797Y

CN2480797Y - High-efficient low-resistance finned pipe for heat-exchanger

Info

Publication number: CN2480797Y
Application number: CN 01212820
Authority: CN
Inventors: 孙朋林
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-21
Filing date: 2001-03-21
Publication date: 2002-03-06
Anticipated expiration: 2011-03-21

Abstract

A novel high-performance low-resistance finned heat exchanger comprises fins and elliptical heat radiation tubes, wherein the heat radiation orifices on the fins are elliptical orifices which are crosswise-arranged, symmetrical positioning crevasses and aerodynamic disturbance crevasses are arranged around the elliptical orifices, and further the lateral section size of the heat radiation tube is smaller than the size of elliptical orifice. The structure design of the finned elliptical orifice of the utility model extracts the advantages from the round expanding finned tube and the flat wearing hard-solder finned tube, has the advantages of high heat-transfer performance, small airflow resistance, high reliability and low cost. The utility model is capable of using for multiple heat exchangers just as air coolers, multiple heating radiators or the like.

Description

New and effective low-resistance finned tube

The utility model relates to the parts of all kinds of heat exchangers (heat exchanger), a kind of specifically new type heat exchanger finned tube.

Present all kinds of heat exchanger (heat exchanger), particularly air-cooled water radiator of high and medium power diesel engine supercharging aerial cooler and air and large-scale thermal power machine, motor hydrogen (air) cooler etc., for example ship diesel, diesel locomotive aerial cooler (charge air cooler); Main now following two kinds of form: A, the pipe expansion-type finned tube of adopting of engineering (generating) machinery, various diesel engine air air-cooled radiators (heat dissipating section, water tank etc.) and the used finned tube of other gas heat exchanger: the pore on the fin is circular, pipe and fin adopt to expand and expand, manufacturing process is simple, pipe is little with the fin thermal contact resistance, the heat exchanger good looking appearance, the reliability height; But owing to adopt pipe, air flow resistance (pressure loss) is big, increases the power attenuation of power-equipment, is not suitable for the little gas fan-cooled radiator of requirement resistance; B, flat tube are worn sheet soldering (baking weldering) formula finned tube: the pore on the fin is flat hole, and flat tube adopts soldering to be connected with fin, and its major advantage is that air flow resistance is little.But its manufacturing process complexity needs big machinery to wear the sheet machine and soldering connects equipment such as (wicking stove, baking braziers); Fin is through high-temperature baking variable color, appearance poor, and pipe is connected easily loosening with fin, and rate of deposition is poor, and the heat transfer contact thermal resistance is big; Radiating tube and tube sheet can only adopt manual soldering to connect, and the heat exchanger poor reliability of manufacturing, life-span weak point are general with being used for the air-cooled water radiator of air.

The purpose of this utility model is intended at above-mentioned shortcoming, provides that a kind of heat-transfer capability is big, air flow resistance is little, reliability is high, the new type heat exchanger finned tube that cost is low, be applicable to all kinds of fin tube type heat exchangers.

The purpose of this utility model realizes in the following manner: the new type heat exchanger finned tube, and described finned tube is made up of fin and oval radiating tube; Fin pore on the fin is oval pore, and this ellipse pore is arranged as cross arrangement; Be provided with the location cut and the gas disturbance cut of symmetry around the oval pore; The radiating tube cross sectional dimensions is less than the oval pipe hole dimension; Radiating tube is through in the oval pore of fin.

Described fin edges also is provided with the waveform flanging.

The size of the oval pore of the utility model makes between the tuberculated pipe (cooling tube) to have the gap greater than the elliptical tube cross sectional dimensions, need not wear the sheet machine and radiating tube has been made things convenient for penetrate in the radiating fin ellipse pore.Put on the finned tube of radiating tube, expand expander by in the radiating tube pipe it radially being enlarged with machinery, fin is connected with the radiating tube close and firm, radiating tube and fin thermal contact resistance are little, reach the good heat transfer effect.The finned tube group need not dried by the fire weldering and just can firmly be connected, and is not loosening, and the fin nondiscolouring, good looking appearance.

The advantage that pipe expansion-type finned tube and flat tube are worn sheet braze welding type finned tube has been drawn in the design of the elliptical tube pore structure of the utility model fin, it is big to have heat-transfer capability, air flow resistance is little, reliability is high, and cost is low, can be common to multiple heat exchangers such as aerial cooler and various radiators.

Further specify the utility model with embodiment with reference to the accompanying drawings.

Fig. 1 is the utility model fin structure figure

Fig. 2 is the right view of Fig. 1

Fig. 3 schemes to the part for the K of Fig. 1

Fig. 4 shows rotation diagram for the D-D of Fig. 1 cuts open

Fig. 5 is the E-E cut-away view of Fig. 1

Fig. 6 shows the rotation enlarged drawing for the C-C of Fig. 1 cuts open

Fig. 7 is the B portion enlarged drawing of Fig. 1

Fig. 8 is the A portion enlarged drawing of Fig. 1

Fig. 9 analyses and observe the rotation enlarged drawing for the F-F of Fig. 8

Figure 10 analyses and observe the rotation enlarged drawing for the G-G of Fig. 8

Figure 11 is the utility model fin and radiating tube connection diagram

Figure 12 is that the K of Figure 11 is to figure

Figure 13 is that the E of Figure 12 is to figure

Figure 14 is the utility model finned tube group and tube sheet connection diagram

Referring to figs. 1 through Figure 10, the pore 2 on the fin 1 is oval, and oval pore 2 is arranged as cross arrangement.Fin goes on foot the progressive die punching out with large-scale multiplex (MUX), the fin gas flow direction can be a row, two rows, three rows, four rows ... novel air disturbance and fin location cut 3 and 4 that symmetry is arranged around the oval pore 2 of fin 1 are to strengthen air agitation, to improve heat-transfer capability; The form of cut can design according to different requirements with size; There is waveform flanging 5 at fin 1 edge.

With reference to Figure 11,12,13, the size of the oval pore 2 of fin 1 is greater than elliptical tube radiating tube 6 cross sectional dimensions, make between fin 1 and the radiating tube 6 and have the gap, do not use and wear the sheet machine radiating tube 6 is penetrated in the elliptical aperture 2 of radiating fin 1 easily, put on the finned tube of radiating tube, enlarge radially by making them in radiating tube 6 pipes that (the radiating tube right-hand member is last fourth contact end with the machinery expander equipment that expands, left end is the fourth contact end), fin 1 is connected with radiating tube 6 close and firm, radiating tube 6 is little with fin 1 thermal contact resistance, reaches the good heat transfer effect.The finned tube group need not dried by the fire weldering and just can firmly be connected, and is not loosening, and the fin nondiscolouring, good looking appearance.

With reference to Figure 14, adopt particular manufacturing craft to hand over radiating tube 6 both ends elliptical tubes to carry out fourth contact, make it the same method that adopts the rumble pipe that expands with round radiating tube, radiating tube 6 is swollen forms the heat exchanger main body with 7 tight reliably connections of two ends tube sheet.

Claims

1, new and effective low obstruction finned tube is characterized in that described finned tube is made up of fin and oval radiating tube; Fin pore on the fin is oval pore, and this ellipse pore is arranged as cross arrangement; Be provided with the location cut and the gas disturbance cut of symmetry around the oval pore; The radiating tube cross sectional dimensions is less than the oval pipe hole dimension, and radiating tube is through in the oval pore of fin.

2, heat exchanger fin as claimed in claim 1 is characterized in that described fin edges also is provided with the waveform flanging.