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High-efficient inner screw copper tube

A technology of internal thread and copper pipe, applied in the field of high-efficiency internal thread copper pipe, can solve the problems of internal thread tooth grooves that are not easy to fill, unfavorable metal fluidity, missing teeth, etc., to achieve the effect of avoiding missing teeth and good heat transfer enhancement , Improve the effect of strength and heat transfer area

Pending Publication Date: 2018-05-04
GOLDEN DRAGON PRECISE COPPER TUBE GROUP
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide high-efficiency internally threaded copper pipes, by providing continuous grooves with a helix angle of 34° to 40° on the inner surface and internal teeth with a height of 0.11mm to 0.16mm, The internal tooth with a tooth top angle of 11°~25°, und

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Embodiment Construction

[0013] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0014] exist figure 1 Among them, the high-efficiency internally threaded copper tube includes a copper tube body 1 with an outer diameter D of 6.95 mm to 7.05 mm. The angle between the axes of pipe body 1) is composed of groove 2 and internal teeth 3 of 34° to 40°, the height h of the internal teeth is 0.11 mm to 0.16mm, the angle α of the addendum is 11° to 25°, the bottom wall The thickness t dimension is 1.1 to 1.5 times the height of the inner tooth. The invention adjusts the parameters such as the molding rotation ratio, drawing s...

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Abstract

The invention discloses a high-efficient inner screw copper tube, which relates to the technical field of heat exchange equipment. A groove with continuous helical angles being 34 degrees to 40 degrees, and inner teeth with heights being 0.11mm to 0.16mm and addendum angles being 11 degrees to 25 degrees are designed on an inner surface. According to the high-efficient inner screw copper tube provided by the invention, on the premise of ensuring a tooth form, the technical problems of teeth missing and insufficient tooth height caused by the phenomena that metal fluidity during spinning forming cannot be favorably realized and internal thread tooth slots are not easy to fill when the addendum angles are smaller and the helical angles are larger are effectively solved; and through the matching of the larger helical angles and the smaller addendum angles, the strength of a turbulent flow and a heat exchange area can be improved favorably, a better heat transfer intensifying effect is produced, and the high-efficient inner screw copper tube is simple in structure, and convenient to manufacture.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to high-efficiency internal threaded copper tubes for making heat exchangers. Background technique [0002] Heat exchangers (such as evaporators and condensers) in air conditioners are mainly composed of internally threaded copper tubes made of phosphorus deoxidized copper and aluminum fins. At present, the internally threaded copper pipe mainly has three series of different specifications with outer diameters of 5mm, 7mm and 9.52mm. The amount of copper used in the evaporator and condenser of an air conditioner is 3-5KG. [0003] The threads of the internally threaded copper pipes are designed as a regularly arranged thread according to the needs. The main tooth types include ordinary teeth, thin and tall teeth, cross teeth, etc., which are used to improve heat transfer efficiency. This single-toothed internally threaded copper tube has better heat transfer perfor...

Claims

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Application Information

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IPC IPC(8): F28F21/08F28F9/24F28F1/40
CPCF28F1/40F28F9/24F28F21/085
Inventor 李胜利程大勇崔俊涛郭立全孟兆勇
Owner GOLDEN DRAGON PRECISE COPPER TUBE GROUP
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