CN2226268Y - Heat transfer tube with rolled fin - Google Patents

Abstract

The utility model relates to a rolling fin type heat-transfer pipe. The utility model is characterized in that heat-transfer sheets 2 are rolling fin type fins, are directly from a center pipe 1, and are arranged on the circumference of the center pipe. The utility model has easy processing; circulatory flow can be produced on the peripheries of the rolling fin type fins, and turbulent flow can be formed; accordingly, the inner layer thickness of the stagnation is decreased to a great extent, and the heat-transfer rate is increased; accordingly, the heat-transfer area is large, and the energy is saved.

Description

Leaf roll formula heat-transfer pipe

The utility model relates to a kind of heat-transfer pipe, especially a kind of leaf roll formula heat-transfer pipe.

At present, the structure of heat-transfer pipe and shape kind are more, and modal have wrap spring type and an aculeus type heat-transfer pipe.The common feature of this two classes heat-transfer pipe is that heat transfer sheet is embedded on the central tube through welding.Because heat-transfer pipe is different with the material of central tube, makes its coefficient of conductivity inconsistent, thermal losses is big; Heat transfer sheet linearly or flat sided straight stand on the central tube, its heat transfer area is restricted; These heat-transfer pipes need welding processing, and the level of welding processing influences heat-transfer effect, and therefore, this class heat-transfer pipe is not only processed trouble, and heat transfer property is relatively poor.

The purpose of this utility model provides a kind of leaf roll formula heat-transfer pipe, and it is not only processed simply, and good heat-transfer, and heat transfer area is big.

The purpose of this utility model is achieved in that in the heat-transfer pipe that comprises heat transfer sheet, central tube, from central tube, directly cut heat transfer sheet, its structural feature is: heat transfer sheet is a leaf roll formula fin, and it is directed to central tube, is distributed on the circumference of central tube.

The utility model adopts the processing of leaf roll formula heat-transfer pipe special purpose machine tool to make, because heat transfer sheet is directed to central tube, so its coefficient of conductivity unanimity, heat energy loss is little.Heat transfer sheet is made leaf roll formula fin, meets heat transfer of fluid branch matter and heat absorption rule, helps fluid in flow process, forms turbulent flow, is convenient to circulation occur around the leaf roll fin, thereby improves heat transfer property, improves the coefficient of conductivity, the enhancing heat-transfer effect.

Adopt such scheme, processing is simple, low cost of manufacture, and heat transfer area is big, rate of heat transfer height, energy savings.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a front view of the present utility model;

Fig. 2 is the left view of Fig. 1.

Fig. 1, Fig. 2 also are embodiment of the present utility model.

As seen from Figure 1, Figure 2, heat transfer sheet 2 of the present utility model is a leaf roll formula fin, and it is directed to central tube 1, directly cuts on center tube wall, and it is distributed on the circumference of central tube 1.Leaf roll formula fin is the spiral winding that certain width is arranged.

Claims (2)

1, a kind of leaf roll formula heat-transfer pipe comprises central tube (1), heat transfer sheet (2), it is characterized in that heat transfer sheet (2) is a leaf roll formula fin, and it is directed to central tube, is distributed on the circumference of central tube (1).

2, leaf roll formula heat-transfer pipe according to claim 1 is characterized in that leaf roll formula fin is the spiral winding that certain width is arranged.

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