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Elliptical continuous twisted tube coaxial heat exchanger

A heat exchanger, coaxial technology, applied in the direction of heat exchanger types, indirect heat exchangers, tubular elements, etc., can solve the problem of not seeing products, etc., to reduce the possibility of fouling, flow distribution and flow velocity uniformity , the effect of flexible structure

Inactive Publication Date: 2011-02-16
山东双涵石化装备有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the production process, there are few domestic manufacturers of elliptical twisted tubes, and there are no products for coaxial heat exchangers using elliptical twisted tubes as the inner tube.

Method used

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  • Elliptical continuous twisted tube coaxial heat exchanger
  • Elliptical continuous twisted tube coaxial heat exchanger
  • Elliptical continuous twisted tube coaxial heat exchanger

Examples

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Embodiment Construction

[0052] The present invention is further elaborated below in conjunction with accompanying drawing, but this example is not used to limit the present invention, and every similar structure of the present invention and similar changes thereof should be included in the protection scope of the present invention.

[0053] The main component is an oval continuous twisted tube, which can be rolled or molded. The invention is applicable to the manufacturing process of conventional casing heat exchangers, and is convenient for popularization and application on an industrial scale.

[0054] Such as figure 1 As shown, a coaxial elliptical continuous twisted tube heat exchanger used as a condenser in a heat pump water heater is mainly composed of inner tubes 1 and outer tubes 2 nested. The outer tube 1 is a round tube, and the inner tube 2 is an elliptical continuous twisted tube (also known as a coaxial intersecting tube); the inner tube 2 is installed in the outer tube 1, and the uppe...

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PUM

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Abstract

The invention discloses an elliptical continuous twisted tube coaxial heat exchanger, which is composed of an outer tube and an inner tube arranged in an inlaid manner, wherein the outer tube is a round tube; the inner tube is configured as a single elliptical continuous twisted tube or an approximately elliptical continuous twisted tube, and an outer long shaft of the inner tube is equal to the inner diameter of the outer tube; the ratio of long diameter to short diameter of the inner tube is 1:0.2 to 0.6; the twisting inclination of the inner tube is set as 10 to 60 degrees; the direction of the long short shaft of the inner tube and an included angle of the axis of the inner tube are changed alternatively; an inner tube joint portion and an outer tube joint portion at two ends of the heat exchanger are welded and closed; outer tube walls of the inner tube joint portion and the outer tube joint portion at two ends of the heat exchanger are respectively provided with an inlet and an outlet made of working substance; the inner tube arranged in an inlaid manner and the outer tube are integrally spirally bent in a superposed circular disk shape in order to form the elliptical continuous twisted tube coaxial heat exchanger with the integral shape of spiral runway, spiral mosquito repellent or spring. The elliptical continuous twisted tube coaxial heat exchanger has the advantages of higher heat transfer coefficient, improved compactness, good pressure and vibration resistance as well as dirt resistance, little possibility of deformation and plugging, flexible structure, convenient arrangement, low price and saving expenditure.

Description

Technical field: [0001] The invention belongs to the category of heat exchange devices, in particular to an elliptical continuous twisted tube coaxial heat exchanger. Background technique: [0002] Heat exchangers are widely used in various industrial fields and are important equipment to achieve heat transfer process requirements. Tube and tube heat exchangers are often used in heat pumps, air conditioners, HVAC and other fields. In the prior art, the sleeve-and-tube heat exchanger is generally used, which is one or several light pipes inside an outer tube, but the heat transfer efficiency of this kind of heat exchanger is generally low; in addition, this type of heat exchanger is used in When it is made into a coaxial spiral sleeve type, there must be a support in the outer tube to ensure coaxiality and no damage. [0003] Another is that the inner tube adopts a multi-head spiral tube. The unique multi-head spiral design of the inner tube makes the fluid form a swirling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/10F28F1/08
Inventor 张春霞张希忠马虎根关欣崔国民韩吉忠崔晓钰李科群童正明陈新东于竹铭
Owner 山东双涵石化装备有限公司
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