Spiral double-pipe heat exchanger

A spiral casing and heat exchanger technology, applied in the field of spiral casing heat exchangers, can solve problems such as low heat transfer coefficient, blockage, and heat transfer coefficient drop

Inactive Publication Date: 2012-12-12
刘福贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the heat transfer process of the hot and cold medium is in phase state change, its heat transfer coefficient is higher, and the heat transfer coefficient on the side where the phase state does not change is lower. Generally, the thermal resistance of this side should be

Method used

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  • Spiral double-pipe heat exchanger

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Embodiment Construction

[0007] Embodiment is as follows in conjunction with accompanying drawing description:

[0008] The spiral casing heat exchanger of the present invention is as attached figure 1 As shown, it includes a circular shell 1, the upper and lower ends of the circular shell 1 are respectively provided with a thermal medium inlet 2, a thermal medium outlet 3, a cold working medium outlet 4, a cold working medium inlet 5, and a circular shell. The body 1 is provided with a cold working medium heat exchange channel 6 and a hot working medium heat exchange channel 7, and the cold working medium heat exchange channel 6 and the hot working medium heat exchange channel 7 are composed of four or more circular shapes with different diameters. The tubes are set on a concentric shaft 11, and the passages of two adjacent casings are provided with spiral ribs 8, so that the passages form a fixed flow area and a spiral flow direction; the hot working medium inlet 2 is provided with a turbine 9, and ...

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PUM

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Abstract

A spiral double-pipe heat exchanger belongs to the field of heat-exchanging apparatuses. A hot-working-medium inlet, a cold-working-medium collecting chamber and a cold-working-medium outlet are arranged on the upper end of a spiral double-pipe heat exchanger body; a hot-working-medium collecting cavity, a hot-working-medium outlet and a cold-working-medium inlet are arranged on the lower end of the heat exchanger body; the heat exchanger body is formed by a plurality of pipes which have different diameters and are sleeved with each other; two adjacent pipes are isolated by a spiral rib, so as to form a spiral channel and form separated cold/hot channels from the centre pipe to the outside; an inlet of a cold-hot working medium heat exchanging channel is configured into a hollow cone, and the outlet is respectively introduced into the upper and the lower collecting cavities by each conduit; the hot-working-medium inlet of the double-pipe heat exchanger is provided with a driving turbine; the cold-working-medium inlet of the double-pipe heat exchanger is provided with an impeller; and the turbine and the impeller are connected by a rotating shaft fixed in a central cylinder. The heat exchanger can fully use the exhaust gas of the combustion motor to drive the cooling airflow automatically, thereby enhancing the heat-exchanging strength; and the heat exchange coefficient of the spiral channel is enhanced by more than 100% compared with the common double-pipe heat exchanger.

Description

Technical field: [0001] The invention relates to heat transfer equipment, in particular to a type of spiral casing heat exchanger. Background technique: [0002] Heat exchangers are usually used to transfer heat from a high temperature gas or liquid medium to a low temperature gas or liquid medium. When the hot and cold mediums are in the same state and the heat transfer areas of the hot and cold sides are close, both the hot and cold fluids have comparable heat transfer coefficients, and the heat transfer efficiency of the heat exchanger is better. If the heat transfer process of the hot and cold medium is in phase state change, its heat transfer coefficient is higher, and the heat transfer coefficient on the side where the phase state does not change is lower. Generally, the thermal resistance of this side should be reduced; in addition, when the heat medium has some residual pressure There are no problems such as recycling and heat medium containing particulate impuritie...

Claims

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Application Information

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IPC IPC(8): F28D7/00
Inventor 刘福贵
Owner 刘福贵
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