阅读说明：本技术 换热管及具有其的换热器 (Heat exchange tube and heat exchanger with same ) 是由 王冠军 魏文建 于 2020-03-20 设计创作，主要内容包括：本发明提供了一种换热管及具有其的换热器,其中,换热管,包括：管体,其内壁上设置有多个齿条,齿条沿管体的长度方向设置,齿条呈螺旋状延伸；且管体包括管段本体,管段本体内壁上的一个齿条至少与另一个齿条交叉连接。本申请的技术方案有效地解决了相关技术中的换热管的传热效率较低的问题。(The invention provides a heat exchange tube and a heat exchanger with the same, wherein the heat exchange tube comprises: the inner wall of the pipe body is provided with a plurality of racks, the racks are arranged along the length direction of the pipe body, and the racks extend spirally; and the pipe body comprises a pipe section body, and one rack on the inner wall of the pipe section body is at least in cross connection with the other rack. The technical scheme of this application has solved the lower problem of heat transfer efficiency of heat exchange tube among the relevant art effectively.)

1. A heat exchange tube, comprising: the pipe comprises a pipe body (10), wherein a plurality of racks (20) are arranged on the inner wall of the pipe body (10), the racks (20) are arranged along the length direction of the pipe body (10), and the racks (20) extend spirally; and the pipe body (10) comprises a pipe section body (11), and one rack (20) on the inner wall of the pipe section body (11) is at least in cross connection with the other rack (20).

2. The heat exchange tube according to claim 1, wherein the tube segment body (11) is a plurality of tube segment bodies (11), the tube segment bodies (11) are arranged at intervals, and two adjacent tube segment bodies (11) are communicated with each other through a connecting section (12).

3. A heat exchange tube according to claim 2, characterized in that the connecting section (12) and the tube section body (11) are of an integral structure, and the connecting section (12) is bent to make the heat exchange tube of a U-shaped structure.

4. A heat exchange tube according to claim 2, further comprising a necked section (13) provided at an end of the tube segment body (11), the necked section (13) having a diameter smaller than that of the tube segment body (11).

5. A heat exchange tube according to claim 1, characterised in that the splines (20) are formed integrally with the tube (10).

6. A heat exchange tube according to claim 1, wherein a plurality of the rack gears (20) are arranged at intervals in a circumferential direction of the tube body (10).

7. The heat exchange tube according to claim 1, wherein the thickness of the rack (20) is gradually reduced in a direction from a root of the rack (20) to a tip of the rack (20).

8. The heat exchange tube according to claim 1, wherein the inner wall of the tube segment body (11) comprises a first inner side wall (111) and a second inner side wall (112) which are arranged in parallel, and the cross connection part of the rack (20) on the first inner side wall (111) and the rack (20) on the second inner side wall (112) is fixed by welding.

9. A heat exchange tube according to claim 1, characterised in that the helical angle of the splines (20) is in the range of 30 ° to 60 °.

10. A heat exchanger comprising a heat exchange tube (1), characterized in that the heat exchange tube is a heat exchange tube according to any one of claims 1 to 9.

11. The heat exchanger according to claim 10, wherein the heat exchange tubes (1) comprise a plurality of heat exchange tubes (1), the plurality of heat exchange tubes (1) are arranged at intervals, the heat exchanger further comprises a first collecting pipe (30) and a second collecting pipe (40), a first end of each heat exchange tube (1) is connected and communicated with the first collecting pipe (30), a second end of each heat exchange tube (1) is connected and communicated with the second collecting pipe (40), and a plurality of fins (50) are arranged between two adjacent heat exchange tubes (1).

Technical Field

The invention relates to the field of heat exchange, in particular to a heat exchange tube and a heat exchanger with the same.

Background

In the related art, a heat exchanger includes a plurality of heat exchange tubes, and both ends of each heat exchange tube are respectively connected to a first header and a second header to communicate the first header and the second header. In the scheme, the plurality of racks parallel to the axis of the heat exchange tube are arranged on the inner wall of the heat exchange tube, and the plurality of racks are arranged in parallel, so that the refrigerant cannot effectively form turbulent flow, and the heat transfer efficiency of the heat exchange tube is low.

Disclosure of Invention

The invention mainly aims to provide a heat exchange tube and a heat exchanger with the same, so as to solve the problem of low heat transfer efficiency of the heat exchange tube in the related art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchange tube comprising: the inner wall of the pipe body is provided with a plurality of racks, the racks are arranged along the length direction of the pipe body, and the racks extend spirally; and the pipe body comprises a pipe section body, and one rack on the inner wall of the pipe section body is at least in cross connection with the other rack.

Further, the pipeline section body is a plurality of, and a plurality of pipeline section body intervals set up, and communicate through the linkage segment between two adjacent pipeline section bodies.

Furthermore, the connecting section and the pipe section body are of an integral structure, and the connecting section is bent to form a U-shaped structure of the heat exchange pipe.

Further, the heat exchange tube also comprises a necking section arranged at the end part of the tube section body, and the diameter of the necking section is smaller than that of the tube section body.

Further, the rack and the pipe body are integrally formed.

Further, the plurality of racks are arranged at intervals in the circumferential direction of the pipe body.

Further, the thickness of the rack becomes gradually smaller in a direction from the root of the rack to the tip of the rack.

Further, the inner wall of the pipe section body comprises a first inner side wall and a second inner side wall which are arranged in parallel, and the cross connection part of the rack positioned on the first inner side wall and the rack positioned on the second inner side wall is fixed through welding.

Further, the helix angle of the rack is in the range of 30 ° to 60 °.

According to another aspect of the invention, a heat exchanger is provided, which comprises a heat exchange tube.

Furthermore, the heat exchange tubes comprise a plurality of heat exchange tubes which are arranged at intervals, the heat exchanger further comprises a first collecting pipe and a second collecting pipe, the first end of each heat exchange tube is connected and communicated with the first collecting pipe, the second end of each heat exchange tube is connected and communicated with the second collecting pipe, and a plurality of fins are arranged between every two adjacent heat exchange tubes.

By applying the technical scheme of the invention, the heat exchange tube comprises: a tube body. A plurality of racks are arranged on the inner wall of the pipe body. The rack is arranged along the length direction of the pipe body. The rack extends spirally. And the pipe body comprises a pipe section body. One rack on the inner wall of the pipe section body is at least in cross connection with the other rack. Thus, when the refrigerant flows in the tube body, the spiral racks which are connected in a cross mode can increase turbulence of the refrigerant, and therefore the heat exchange coefficient of the heat exchange tube is improved. Therefore, the technical scheme of the application effectively solves the problem that the heat transfer efficiency of the heat exchange tube in the related art is low.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of a tube body of a first embodiment of a heat exchange tube according to the present invention;

FIG. 2 shows a schematic cross-sectional view of the tube section body of the heat exchange tube of FIG. 1;

FIG. 3 shows a schematic partial cross-sectional view of a tube segment body of the heat exchange tube of FIG. 1;

FIG. 4 shows a schematic cross-sectional view of a connecting section of the heat exchange tube of FIG. 1;

FIG. 5 shows a schematic front view of a tube body of a second embodiment of a heat exchange tube according to the present invention; and

fig. 6 shows a schematic front view of a tubular body of an embodiment of a heat exchanger according to the present invention.

Wherein the figures include the following reference numerals:

1. a heat exchange pipe; 10. a pipe body; 11. a pipe section body; 111. a first inner side wall; 112. a second inner side wall; 12. a connecting section; 13. a necking section; 20. a rack; 30. a first header; 40. a second header; 50. and a fin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3, the heat exchange tube of the first embodiment includes: a tubular body 10. The inner wall of the pipe body 10 is provided with a plurality of racks 20. The rack 20 is provided along the length direction of the pipe body 10. The rack 20 extends helically. And the pipe body 10 includes a pipe section body 11. One rack 20 on the inner wall of the spool piece body 11 is at least cross-connected to another rack 20.

With the technical solution of the first embodiment, the rack 20 extends spirally. And the pipe body 10 includes a pipe section body 11. One rack 20 on the inner wall of the spool piece body 11 is at least cross-connected to another rack 20. Thus, when the refrigerant flows in the pipe body 10, the plurality of racks 20, which are spirally and cross-connected, can increase turbulence of the refrigerant, thereby improving the heat exchange coefficient of the heat exchange pipe. Therefore, the technical scheme of the first embodiment effectively solves the problem of low heat transfer efficiency of the heat exchange tube in the related art. In the process of processing and forming the pipe body 10, the pipe section body 11 is directly formed at two ends of the pipe body 10 by rolling, so that the production efficiency is greatly improved. The arrangement of the pipe section body 11 facilitates the arrangement of other structures of the heat exchanger, such as cooling fins, on the pipe section body 11, and enables the other structures to be connected conveniently and to be regular in shape.

As shown in fig. 1, in the first embodiment, there are two pipe segment bodies 11, two pipe segment bodies 11 are arranged at intervals, and two adjacent pipe segment bodies 11 are communicated with each other through a connecting segment 12. The connecting section 12 is arranged to facilitate the connection of the two pipe section bodies 11, so that the heat exchange pipe is convenient to process and form.

Of course, in other embodiments not shown in the drawings, the number of the pipe segment bodies may not be limited to two, and may be three, four, or more.

As shown in fig. 1, 2 and 4, in the first embodiment, the pipe segment body 11 has a flat cross-sectional shape, and the coupling segment 12 has a circular cross-sectional shape. Thus, the shapes of the pipe section body 11 and the connecting section 12 are standard, so that the forming is convenient, and the mass production is convenient.

Of course, in other embodiments not shown in the figures, the cross-sectional shape of the connecting section may also be square or oval.

In the related art, each heat exchange tube includes flat tube sections and bent sections between the flat tube sections, the bent sections being twisted at a predetermined angle with respect to a body of the flat tube sections. In the above scheme, the heat exchange tube is a flat heat exchange tube, and the heat exchange tube is required to be twisted at the bending section after being bent, so that the processing technology of the heat exchange tube is complex.

As shown in fig. 1, in the first embodiment, the connection section 12 and the tube section body 11 are an integral structure, and the connection section 12 is bent to make the heat exchange tube have a U-shaped structure. The central line of the pipe section body 11 and the central line of the connecting section 12 are in the same plane. Therefore, in the process of processing and forming the pipe body, the connecting part of the connecting section 12 and the pipe section body 11 is not twisted, the processing technology of the heat exchange pipe is simplified, and the production efficiency is improved. The connecting section 12 and the pipe section body 11 are of an integral structure, so that the processing technology of the heat exchange pipe can be simplified, and the production efficiency is improved.

The U-shaped structure may be a structure in which the pipe 10 is bent without a fold, or a structure in which the pipe 10 is folded with a fold. The above-mentioned "flat" means that two side walls of the pipe segment body 11 are both planar and arranged in parallel, and the other two side walls are both arc surfaces. In the present application, the flat pipe section body is realized by rolling a circular pipe.

As shown in fig. 1 and 3, in the first embodiment, the rack 20 is integrally formed with the tube 10. This can further simplify the process of heat exchange tube. The integral molding is a process in which the rack 20 and the pipe 10 are molded by a single stretching process.

As shown in fig. 2, in the first embodiment, a plurality of racks 20 are arranged at intervals in the circumferential direction of the pipe body 10. When the refrigerant flows in the pipe 10, the heat exchange efficiency can be further improved by the spaced arrangement of the plurality of racks 20.

As shown in fig. 2, in the first embodiment, the thickness of the rack 20 is gradually reduced in a direction from the root of the rack 20 to the top of the rack 20. This provides the tubular body 10 with good structural strength.

As shown in fig. 3, in the first embodiment, the inner wall of the pipe segment body 11 includes a first inner side wall 111 and a second inner side wall 112 which are arranged in parallel, and the cross connection portion between the rack 20 on the first inner side wall 111 and the rack 20 on the second inner side wall 112 is fixed by welding. In this way, the rack 20 located on the first inner sidewall 111 has a gap in the circumferential direction of the pipe body 10 with the rack 20 located on the second inner sidewall 112, so that the heat exchange efficiency of the pipe body 10 can be further improved. The above-described welded fastening can also increase the reliability of the connection of the rack 20.

As shown in fig. 3, in the first embodiment, the helical angle of the rack 20 is in the range of 30 ° to 60 °. The angular range of the helix angle described above enables the rack 20 to smoothly create turbulence.

As shown in fig. 5, in the first embodiment, the second embodiment of the heat exchange tube provided by the present application is different from the first embodiment in that the heat exchange tube further comprises a necking section 13 provided at an end of the tube section body, and the diameter of the necking section 13 is smaller than that of the tube section body 11. Therefore, the volume of the heat exchange tube can be reduced, the material is saved, and the production cost is reduced.

In the second embodiment, the cross-sectional shape of the throat section 13 is flattened. The arrangement of the necking section 13 is convenient for connecting the heat exchange tube to a collecting pipe in the heat exchanger, and the connection is convenient.

Of course, in other embodiments not shown in the figures, the cross-sectional shape of the connecting section is circular or square or elliptical.

The application also provides a heat exchanger, as shown in fig. 6, in this embodiment, the heat exchanger includes a heat exchange tube 1, and the heat exchange tube is the above heat exchange tube. The heat exchanger can solve the problem that the heat transfer efficiency of the heat exchange tube in the related art is low.

As shown in fig. 6, in the present embodiment, the heat exchange tube 1 includes a plurality of heat exchange tubes 1, the plurality of heat exchange tubes 1 are arranged at intervals, the heat exchanger further includes a first collecting tube 30 and a second collecting tube 40, a first end of each heat exchange tube 1 is connected and communicated with the first collecting tube 30, a second end of each heat exchange tube 1 is connected and communicated with the second collecting tube 40, and a plurality of fins 50 are disposed between two adjacent heat exchange tubes 1. The tube section body 11 is provided with a plane, and the plurality of fins 50 are connected to the tube section body 11 of the heat exchange tube 1, so that the connection is stable and reliable.

The application also provides a processing method of the heat exchange tube, and in the embodiment, the processing method of the heat exchange tube comprises the following steps: a pipe body 10 is obtained, the center line of the pipe body 10 is straight or U-shaped, and an internal thread is provided on the inner wall of the pipe body 10. Both ends of the pipe body 10 are rolled to form a pipe section body 11. Wherein, under the condition that the central line of the tube body 10 is in a straight line, the processing method of the heat exchange tube further comprises the following steps: the middle portion of the pipe body 10 is bent or curved to form a connection section. In the process of machining and forming the tube body 10, the two ends of the tube body 10 are directly machined into the tube section body 11 through rolling, the twisting operation is not needed, the machining process of the heat exchange tube is simplified, and the production efficiency is improved. Therefore, the processing method of the heat exchange tube can effectively solve the problem of low heat transfer efficiency of the heat exchange tube in the related art. Of course, when the central line of the tube body is U-shaped, the tube body 10 is directly processed into the tube body 10 by rolling the two ends thereof without bending or bending, which can further simplify the processing technique of the heat exchange tube.

The "U shape" refers to a bending shape in which the middle portion of the pipe 10 is bent into an arc shape, and may also refer to a bending shape in which the middle portion of the pipe 10 is creased. The tubular body 10 is formed by drawing.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.