Patent ID: 11867428
Assignee: A. O. SMITH CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 26:
27. A heat exchange having a spirally coiled heat exchange pipe which comprises a pipe body and a plurality of fins fixedly disposed to sleeve the pipe body,
wherein a flow guiding structure is provided at an outer edge of a fin of the plurality of fins;
wherein a flow guiding flue is formed between the flow guiding structure and an outer wall of the pipe body,
wherein the heat exchange pipe comprises an inner coiled pipe and an outer coiled pipe surrounding the inner coiled pipe;
wherein a partition board is provided between the inner coiled pipe and the outer coiled pipe;
wherein a flue gas outlet of the flow guiding flue of the inner coiled pipe faces the partition board;
wherein the flue gas inlet communicated with the flow guiding flue and the flue gas outlet communicated with the flow guiding flue are provided between the fin and an adjacent fin of the plurality of fins;
wherein the heat exchange pipe has an incident side facing flue gas and an effluent side facing away from the flue gas; the flue gas outlet is located on the effluent side, and the flow guiding structure is located on two sides of the flue gas outlet along a circumferential directions;
wherein each of the plurality of fins includes the flue gas outlet, and
wherein the flue gas outlets of a first number of the plurality of fins and the flue gas outlets of a second number of the plurality of fins are staggered by 90 degrees along the circumferential direction.