CN2372653Y

CN2372653Y - Rotary emission heat-exchanging fin

Info

Publication number: CN2372653Y
Application number: CN 99237410
Authority: CN
Inventors: 文幼祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-30
Filing date: 1999-03-30
Publication date: 2000-04-05
Anticipated expiration: 2009-03-30

Abstract

The utility model relates to a rotary emission fin and a heat exchanger composed of the fin. The heat exchange fin is rotary and of an emission shape; a combining surface combining with a heat exchange piece is arranged on the heat exchange fin; the heat exchange fin is combined with the heat exchange piece in a pressing way; one or more than one heat exchange fin is arranged on the heat exchange piece. The combination of the heat exchange fin and a pipe can form a rotary emission heat exchange pipe. The rotary emission fin of the utility model has the advantages of novel form and large heat exchange area, can ensure that the inner surface of the heat exchange fin thereof is tightly coated on a pipe wall in technology, and can effectively improve heat transferring speed and increase heat exchange coefficient.

Description

Rotation radiation heat exchange fin

The utility model belongs to the heat exchange element class, is a kind of rotation radiation finned heat exchanger.

The application of heat exchanger is wider, can be widely used in field or departments such as electric power, refrigeration, steel-making, chemical industry, metallurgy, building materials, mine, boats and ships and environmental protection.With oil refining is example, and wherein the expense of heat exchanger accounts for 25% of total cost, so improve efficiency of heat exchanger energy savings, reduction material consumption etc. is all had and important meaning.

Tube Sheet of Heat Exchanger is the core component of heat exchanger, and heat exchanger tube is normally combined by heat exchanger fin.The type of Tube Sheet of Heat Exchanger has a variety ofly in the prior art, and most popular is heat exchanger around spring finned tube form.But there are two distinct issues around the spring finned tube: the one, less around the heat exchange area of spring fin, the coefficient of heat transfer is also less, therefore influences the heat output of heat exchanger; The 2nd, be to receive on the steel pipe around the spring fin with soldering, along with the growth of heat exchanger tube, the difficult quality guarantee of welding, thus also can have influence on the heat output of heat exchanger.

The purpose of this utility model is at deficiency of the prior art, and it is big to design a kind of heat exchange area, and the heat transfer rate is fast, the heat exchange fin that the coefficient of heat transfer is big, and the heat exchanger tube formed of heat exchange fin thus.

The form of the composition of the said rotation radiation of the utility model heat exchange fin is, said heat exchange fin 1 is the heat exchange fin 2 of rotation radiation shape, the faying face 3 that combines with heat exchanging piece 4 is arranged on the heat exchange fin 1, the mode that heat exchange fin 1 can be pressed into combines with heat exchanging piece 4, and a slice or the heat exchange fin more than a slice 1 can be set on heat exchanging piece 4.If combining with pipe, heat exchange fin 1 then can form rotation radiation heat exchanger tube.

The version of the global shape of said heat exchange fin 1 and faying face 3 thereof can be according to the shape of the pipe of its heat exchanging piece 4 or required combination and is different.For example, circle, ellipse, rectangle or the like.

Its form novelty of the said rotation of the utility model radiation fin, heat exchange area is big, and can guarantee that the inner surface of its heat exchange fin closely paste from technology and wrap on the tube wall, so can improve heat transfer rate effectively and increase the coefficient of heat transfer.

From " the heat-transfer character determination test report of fin heat transfer pipe " that the heat exchanger tube that the said rotation of the utility model radiation fin is constituted is done as can be seen: the heat exchanger tube that said rotation radiation fin is constituted and of the prior art around the spring fin heat exchange pipe, the comparative test result of utilizing identical test method and experimental condition to do, the coefficient of heat transfer of the said rotation radiation of the utility model heat exchanger tube is apparently higher than the coefficient of heat transfer around the spring fin heat exchange pipe.See that the wind speed given in the accompanying drawing 8 and the coefficient of heat transfer concern the test data curve.

Accompanying drawing 1: rotation radiation heat exchange fin schematic diagram;

Accompanying drawing 2: oval rotation radiation heat exchange fin schematic diagram;

Accompanying drawing 3: one of rotation radiation heat exchange fin cross-sectional schematic:

Accompanying drawing 4: two of rotation radiation heat exchange fin cross-sectional schematic;

Accompanying drawing 5: the heat exchange fin of each bar rotation radiation shape is not mutually at conplane form schematic diagram;

Accompanying drawing 6: rotation radiation heat exchange fin is installed in the embodiment schematic diagram of using on the triode;

Accompanying drawing 7: radiate the heat exchanger tube that heat exchange fin is formed by rotation;

Accompanying drawing 8: rotation radiation fin heat exchange pipe and the test data correlation curve that concerns around the spring fin heat exchange pipe coefficient of heat transfer.

Below in conjunction with accompanying drawing embodiment is further described.

What accompanying drawing 1 provided is rotation radiation heat exchange fin schematic diagram.The heat exchange fin 2 that rotation radiation shape more than two or two is arranged on said heat exchange fin 1, the bar number of the heat exchange fin 2 of its rotation radiation shape can be determined according to size, material, intensity and the needs of its heat exchange fin.

Accompanying drawing 2 is oval rotation radiation heat exchange fin schematic diagrames.

Accompanying drawing 3 be the A-A of accompanying drawing 1 to the cutaway view schematic diagram, the heat exchange fin 2 that this view shows each sheet rotation radiation shape all at grade, its faying face 3 goes out the type for ∏.

What accompanying drawing 4 provided is that cutaway view is the same substantially with accompanying drawing 2, is L shaped shape at faying face 3 places just.

Accompanying drawing 5 is that each bar rotates the heat exchange fin 2 of radiation shape mutually not at conplane form schematic diagram.See from the side, the heat exchange fin 2 of two whenever adjacent rotation radiation shapes all departs from certain distance, so for whole circumference, article one, the distance that is differed between the heat exchange fin 2 of the heat exchange fin 2 of rotation radiation shape and the last item rotation radiation shape can be the height of faying face 3, make when some rotation radiation heat exchange fins 1 are superimposed together, see that from the outer its heat exchange fin constitutes spiral status.

Accompanying drawing 6 provides is a kind ofly will rotate radiation heat exchange fin 1 to be installed in triode 5 be Application Example schematic diagram on the heat exchanging piece 4.

Accompanying drawing 7 is arranged on the heat exchanger tube embodiment that forms on the heat exchanging piece 4 by the radiation of the rotation shown in the accompanying drawing 3 heat exchange fin 1.

Accompanying drawing 8: rotation radiation fin heat exchange pipe and test data correlation curve around the spring fin heat exchange pipe coefficient of heat transfer.Shown in the curve a among the figure is the wind speed of the heat exchanger tube that constitutes of the said rotation of the utility model radiation fin and the relation curve of the coefficient of heat transfer; Shown in the curve b is that prior art is around the wind speed of spring fin heat exchange pipe and the relation curve of the coefficient of heat transfer.

X coordinate among the figure, " V " expression developmental tube wind speed that vertically facings the wind; Y coordinate, " α " expression serve as to adjust the coefficient of heat transfer that area calculates with the parent tube external surface area, and wherein the Y coordinate is logarithmic coordinates.Adopt least square method to return and draw corresponding relational expression.As can be seen from Figure, as calculating heat exchange area, the coefficient of heat transfer of its rotation radiation finned tube is obviously greater than the coefficient of heat transfer around reed pipe with respect to parent tube.

Claims

1, a kind of rotation radiation heat exchange fin is characterized in that said heat exchange fin (1) has the faying face (3) that combines with heat exchanging piece (4) for the heat exchange fin (2) of rotation radiation shape on the heat exchange fin (1).

According to the said heat exchange fin of claim 1, it is characterized in that 2, the mode that heat exchange fin (1) can be pressed into combines with heat exchanging piece (4); A slice or the heat exchange fin more than a slice (1) can be set on heat exchanging piece (4).