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Internal and external fin tube and fin tube group

A technology of finned tubes and fins is applied in the field of gas-gas heat exchangers to achieve the effects of high heat transfer efficiency, reasonable structural design and saving of raw material consumption.

Inactive Publication Date: 2003-03-05
吕钢岭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned finned tubes are mainly suitable for occasions where the heat transfer coefficients of the heat exchange fluids on both sides are quite different, such as heat exchange between gas and liquid, but not suitable for occasions where the heat transfer coefficients of the heat exchange fluids on both sides are small and / or similar , such as the heat transfer between gas and gas

Method used

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  • Internal and external fin tube and fin tube group
  • Internal and external fin tube and fin tube group
  • Internal and external fin tube and fin tube group

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Embodiment Construction

[0014] attached figure 1 , 2 Showing the sectional view of an embodiment of the inner and outer finned tubes of the present invention, the inner core 1 and the outer tube 2 are both smooth tubes, the outer tube 2 is provided with an inner core 1, and a straight tube is arranged between the inner core 1 and the outer tube 2. Shaped folded fins 3, square single-tube hole plate-shaped fins 4 are arranged on the outer wall of the outer tube 2, the inner core 1 is a round tube with an axial inner hole, and the two ends are sealed with plugs 5, forming the inner and outer fins of the present invention Tube.

[0015] attached image 3 , 4 Show the structural diagram of the inner and outer finned tube clusters of the present invention, the inner core 1 and the outer tube 2 are all smooth tubes, the fins 3 are flat folded fins, the fins 4 are flat plate fins with multi-tube holes, and the outer tube 2. There is an inner core 1 inside. Straight folded fins 3 are arranged between the...

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Abstract

The present invention discloses a kind of inner-outer fin tube and fin tube group, and it is formed from inner core, outer tube, fin A and fin B. It is characterized by that it in the interior of outer tube the inner core is set, between inner core and outer tube the fin A is mounted and between outer tube and outer wall the fin B is mounted. Said invented fin tube and fin tube group are equiopedwith high-efficiency compact secondary heat-conducting surface respectively on inner wall and outer wall of heat-exchange tube, and can be used in the heat exchanger in which the heat emission coefficients of its two side heat exchange fluids are smaller and / or approximate. The structure of said heat exchange is more reasonable, compact and high in heat-conductive efficiency, specially it is applicable to gas-gas medium heat exchange.

Description

technical field [0001] The invention discloses an inner and outer finned tube and a cluster of finned tubes, which are especially suitable for an air-air heat exchanger. Background technique [0002] In order to improve the heat transfer coefficient of the heat exchanger, increase the heat transfer area of ​​the heat exchanger, and reduce the volume and weight of the heat exchanger, fins (or ribs) are often added to the outer or inner wall of the heat exchange tube. Finned tubes for heat exchangers can be roughly divided into two categories: one is outer finned tubes, which include coiled finned tubes, sleeved finned tubes, and integrally rolled finned tubes; the other is outer finned tubes. This type of finned tube is to add fins on the inner wall of the heat exchange tube, such as drawing longitudinal ribs on the inner wall of the heat exchange tube, or installing an inner core with outer ribs in the heat exchange tube , In addition, there is also an inner finned tube, wh...

Claims

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Application Information

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IPC IPC(8): F28D7/00
Inventor 吕钢岭
Owner 吕钢岭
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