CN201259394Y

CN201259394Y - Heat transfer pipe for computer CPU heat radiator

Info

Publication number: CN201259394Y
Application number: CNU2008201211989U
Authority: CN
Inventors: 刘绪军; 黄绍辉; ***
Original assignee: Ningbo Jintian Copper Tube Co Ltd
Current assignee: Ningbo Jintian Copper Tube Co Ltd
Priority date: 2008-07-10
Filing date: 2008-07-10
Publication date: 2009-06-17
Anticipated expiration: 2018-07-10

Abstract

The utility model relates to a heat transferring pipe for a computer CPU heat radiator, which is provided with a heat transferring pipe body (1), wherein, the inner surface of the heat transferring pipe body (1) is provided with an inner-thread-shaped spiral tooth (2) that is used for increasing the inner surface area of the heat transferring pipe body (1), and is characterized in that the height (H) of the spiral tooth (2) is 0.80 to 0.35 mm, and the angle (a) that is formed by two edges of the spiral tooth is 10 to 90 degrees. The heat transferring pipe has the advantages: since the spiral angle is small, the resistant force of the coolant when the coolant floes inside the threaded copper pipe is reduced and the heat exchanging effect is good; in addition, with the spiral tooth, the inner surface area of the heat transferring pipe is effectively increased, thereby increasing the heat transferring area between the heat transferring pipe body and the coolant liquid inside the heat transferring pipe body and further improving the heat conducting performance of the heat transferring pipe; and with the above structural characteristics, the heat transferring pipe can be made into a thin pipe, and the size of the heat transferring pipe can be 3 to 6 mm. Through the experiment result, the heat exchanging efficiency of the heat transferring pipe is 1.2 to 2.8 times of that of the ordinary heat transferring pipe.

Description

The heat-transfer pipe that is used for computer CPU radiator

Technical field

The utility model relates to a kind of heat-transfer pipe that is used for computer CPU radiator.

Background technology

Along with development of technology, the volume of heat exchanger also can be reduced simultaneously all the important means of inner screw thread copper pipe as raising heat exchanger heat exchanger effectiveness in the home and abroad.CPU needs the radiator that a kind of heat-sinking capability needs power consumption by force and not, and at present, the heat-transfer pipe that uses on the computer CPU radiator is light face copper pipe mostly, but the heat-transfer pipe of this structure is little because of internal surface area, causes heat exchanger effectiveness not high.

As everyone knows, medium is that the heat around continuous the absorption is vaporized and freezed in heat-transfer pipe, the formula that calculates its refrigerating capacity is: (Q is a refrigerating capacity to Q=K * F * △ T, K is a heat-transfer pipe material thermal conductivity, F is a heat transfer area, △ T is a heat transfer temperature difference), by computing formula as can be known, the refrigerating capacity size is linear with material characteristic, pipe inner structure and the internal surface area of heat-transfer pipe.When heat-transfer pipe material characteristic is certain, when promptly thermal conductivity was constant, the key that improves heat-transfer pipe refrigerating capacity (being its heat exchanger effectiveness) just was to increase the heat-transfer pipe internal surface area.

The Chinese utility model patent that existing a kind of application number is CN92235193.7 discloses a kind of structure, the inside and outside all rolling spiral groove of this heat-transfer pipe, fin band pressure welding simultaneously is in heat-transfer pipe outer surface groove, this heat-transfer pipe has obvious augmentation of heat transfer effect, can be used as the heat-transfer pipe on air cooler, heat pipe and the radiator etc. in oil, chemical industry and the civil buildings field.But its shortcoming is, project organization is reasonable not enough, position relation and the surface area that how to improve better between the groove do not have concrete parameter between the groove though it has groove, so its heat-transfer effect can't be brought into play effectively, so its structure awaits to improve.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of by increasing the heat-transfer pipe that is used for computer CPU radiator that the heat-transfer pipe internal surface area improves heat exchanger effectiveness at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this is used for the heat-transfer pipe of computer CPU radiator, include the heat transfer body, the inner surface of heat transfer body is provided with the internal thread shape to increase the helical tooth of heat transfer body inner surface area, it is characterized in that: the height of described helical tooth is 0.08～0.35mm, and the formed angle in helical tooth both sides is 10～90 degree.

As improvement, the tooth top of described helical tooth is preferably the camber line transition and connects; The camber line radius of curvature of described tooth top is 0.04～0.06mm.

Improve, all connected with the circular arc line transition by the teeth groove that forms between the helical tooth in the described heat transfer body, the radius of curvature of this circular arc line is preferably 0.04～0.06mm.

Improve again, described helical tooth and heat-transfer pipe axon to angle be 0～5 to spend.

Compared with prior art, the inner surface of the utility model heat transfer body is provided with the internal thread shape to increase the helical tooth of heat transfer body inner surface area, and the height of described helical tooth is 0.08～0.35mm, and the helical tooth profile angle is 10～90 degree.This design advantage is: because helical angle is little, resistance was little when cooling agent flowed in inner screw thread copper pipe, heat exchange effect is good: also have, its interior helical tooth of this structural thermal pipe effectively increases the inner surface area of heat-transfer pipe, thereby increased with the heat transfer body in the cooled heat transfer fluid area, thereby further improved the heat conductivility of heat-transfer pipe; Because said structure, heat-transfer pipe of the present utility model can be done carefullyyer, and its size can be made 3～6mm, shows that through experimental result the heat exchanger effectiveness of the utility model heat-transfer pipe is 1.2～2.8 times of common heat-transfer pipe.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is Fig. 1 expanded view;

Fig. 3 is the enlarged drawing of I portion among Fig. 1.

The specific embodiment

Embodiment is described in detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 to Figure 3, the heat-transfer pipe that is used for computer CPU radiator of present embodiment, include heat transfer body 1, the inner surface of heat transfer body 1 is provided with the internal thread shape to increase the helical tooth 2 of heat transfer body 1 inner surface area, the height H of helical tooth 2 is 0.08～0.35mm, and helical tooth profile angle α is 10～90 degree.And the tooth top 22 of helical tooth 2 connects for the camber line transition, and the camber line radius of curvature R of this tooth top 22 is 0.04～0.06mm.All connected with the circular arc line transition by the teeth groove that forms between the helical tooth 2 in the heat transfer body 1, the radius R 1 of this circular arc line is 0.04～0.06mm.And helical tooth 2 and heat transfer body 1 axial angle beta is 0～5 degree.

Below the utility model is described in further detail:

As described in Fig. 1 to Fig. 3, the heat transfer body, material is TU1 (oxygen-free copper), TU2 (oxygen-free copper), T2 (copper) or TP2 (deoxidation phosphor-copper), heat transfer body 1 external peripheral surface is a smooth surface, its inner circumferential surface has many contour likeness in form screw-shaped helical tooths 2, and the caliber of this heat transfer body 1 is designed to 3～6mm; Screw-like helical tooth 2 by identical tooth profile parameter constitutes, and the profile angle α of helical tooth 2 is 10～90 degree, and the height H of helical tooth 2 is 0.08～0.35mm.In the heat transfer body 1 between each profile all with the circular arc camber transition, helical tooth 2 tops are that the transition of R circular arc camber is connected with the radius with its sidewall, the junction of helical tooth 2 roots and heat transfer body 1 inwall is that radius is the circular arc camber of R1, and the size of R1, R is determined by the drift angle a of helical tooth 2 is big or small; The radius R of these circular arc cambers and R1 are 0.04～0.06mm.See shown in Figure 2ly, it is lead angle that helical tooth 2 departs from the axial angle of heat-transfer pipe, and the angle beta of this lead angle is 0～5 degree, and the direction of spiral is dextrorotation in the present embodiment, can certainly be designed to left-handed.

Claims

1, a kind of heat-transfer pipe that is used for computer CPU radiator, include heat transfer body (1), the inner surface of heat transfer body (1) is provided with the internal thread shape to increase the helical tooth (2) of heat transfer body (1) inner surface area, it is characterized in that: the height (H) of described helical tooth (2) is 0.08～0.35mm, and helical tooth both sides formed angle (α) are 10～90 degree.

2, heat-transfer pipe according to claim 1 is characterized in that: described helical tooth (2) tooth top (22) connects for the camber line transition.

3, heat-transfer pipe according to claim 2 is characterized in that: the camber line radius of curvature (R) of described tooth top (22) is 0.04～0.06mm.

4, heat-transfer pipe according to claim 1 is characterized in that: all connected with the circular arc line transition by the teeth groove that forms between the helical tooth (2) in the described heat transfer body (1), the radius of curvature of this circular arc line (R1) is 0.04～0.06mm.

5, according to appointing in the claim 1 to 4-the described heat-transfer pipe of claim, it is characterized in that: the axial angle (β) of described helical tooth (2) and heat transfer body (1) is 0～5 degree.