CN216409817U - Heat exchange tube, heat exchange device and water heating device - Google Patents
Heat exchange tube, heat exchange device and water heating device Download PDFInfo
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- CN216409817U CN216409817U CN202123156221.2U CN202123156221U CN216409817U CN 216409817 U CN216409817 U CN 216409817U CN 202123156221 U CN202123156221 U CN 202123156221U CN 216409817 U CN216409817 U CN 216409817U
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- heat exchange
- tube
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- exchange tube
- pipe
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Abstract
The embodiment of the utility model provides a heat exchange tube, a heat exchange device and a water heating device, wherein the heat exchange tube comprises: and part of the pipe wall of the concave section is sunken towards the inside of the pipe body of the heat exchange pipe, and forms a flat cavity with other pipe walls of the concave section. The heat exchange tube, the heat exchange device and the water heating device provided by the embodiment of the utility model have high heat exchange efficiency.
Description
Technical Field
The utility model relates to the technical field of heating equipment, in particular to a heat exchange tube, a heat exchange device and a water heating device.
Background
Some boilers among the correlation technique include furnace, water tank and tobacco pipe, and the tobacco pipe arranges in the water tank and cut off between the water tank sealed, and the tobacco pipe communicates with furnace, and the flue gas that the burning produced in the furnace flows through the tobacco pipe, through the heat transfer of tobacco pipe and the water in the water tank to water in the water tank heats. At present, the tobacco pipe among the correlation technique has the technical problem that heat exchange efficiency is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a heat exchange tube with high heat exchange efficiency, a heat exchange device and a water heating device.
The above object of the present invention can be achieved by the following technical solutions:
the present invention provides a heat exchange tube comprising: and part of the pipe wall of the concave section is sunken towards the inside of the pipe body of the heat exchange pipe, and forms a flat cavity with other pipe walls of the concave section.
In a preferred embodiment, the cross section of the part of the tube wall of the concave section and/or the other tube walls of the concave section is in a circular arc shape.
In a preferred embodiment, the cross section of the partial pipe wall and the cross section of the other pipe wall are concentric circular arcs.
In a preferred embodiment, the central angle of the further tube wall with the circular-arc-shaped cross section is greater than 180 °.
In a preferred embodiment, an arc-shaped transition section is respectively arranged between the two ends of the other pipe wall and the partial pipe wall.
In a preferred embodiment, the width of the flat chamber ranges from 3mm to 8 mm.
In a preferred embodiment, the ratio of the width of the flat cavity to the outer diameter of the other tube wall is in the range of 0.08-0.2.
In a preferred embodiment, said further tube wall is provided with at least one recess recessed towards said portion of the tube wall.
In a preferred embodiment, the length of the inner concave section is not less than 1/2 or 2/3 or 3/4 of the total length of the heat exchange tube.
In a preferred embodiment, the heat exchange tube includes connection sections at both ends of the concave section.
In a preferred embodiment, the connecting section comprises a round pipe section, and the outer edge of the projection of the concave section on the plane perpendicular to the longitudinal direction of the heat exchange pipe does not exceed the outer edge of the projection of the round pipe section on the plane perpendicular to the longitudinal direction of the heat exchange pipe.
In a preferred embodiment, a transition section is further disposed between the circular pipe section and the concave section.
The utility model provides a heat exchange device, comprising: the heat exchange tube comprises a first installation body, a second installation body and a plurality of heat exchange tubes, wherein the first end of each heat exchange tube is installed on the first installation body, and the second end of each heat exchange tube is installed on the second installation body.
The present invention provides a water heating apparatus, comprising: heating device and above-mentioned heat exchange tube.
In a preferred embodiment, the water heating device comprises a boiler, the heating device comprises a combustion device, and the heat exchange pipe comprises a plurality of smoke pipes connected with the combustion device and used for exchanging heat with substances in the water heating device.
In a preferred embodiment, the boiler further includes a first mounting body for mounting one end of the smoke tube and a second mounting body for mounting the other end of the smoke tube, the first mounting body and the second mounting body divide the boiler into a combustion area, a heat exchange area and a smoke collection area, the combustion device is disposed in the combustion area, the smoke tube is at least partially disposed in the heat exchange area, and the smoke collection area is used for collecting smoke passing through the smoke tube.
In a preferred embodiment, the water heating device comprises a boiler, the heating device comprises a combustion device, and the heat exchange tube comprises a plurality of water tubes for exchanging heat with the flue gas of the combustion device.
The utility model has the characteristics and advantages that:
after the heat exchange medium enters the heat exchange tube, the heat exchange medium can flow through the flat cavity of the inner concave section, the flat cavity can accelerate the flowing speed of the heat exchange medium, the convection heat exchange coefficient is increased, the heat exchange medium can exchange heat with substances outside the heat exchange tube, and therefore the heat exchange efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1-2 are schematic structural views of an embodiment of a heat exchange tube provided by the present invention;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 5 is a partial cross-sectional view of FIG. 1;
FIG. 6 is a schematic structural view of another embodiment of a heat exchange tube provided by the present invention;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a cross-sectional view taken at B-B of FIG. 6;
FIGS. 9-11 are schematic structural views of a hot water apparatus provided by the present invention;
fig. 12-13 are schematic structural views of a heat exchange device provided by the utility model.
The reference numbers illustrate:
10. a heat exchange pipe;
20. an inward concave section; 21. a flat cavity; 22. a portion of the tube wall; 23. other tube walls; 231. a groove; 24. an arc transition section;
30. a connecting section; 31. a circular pipe section; 32. a transition section;
41. a first mounting body; 42. a second mounting body;
50. a heating device; 51. a combustion device;
61. a combustion zone; 62. a smoke collection area; 63. a condensed water discharge pipe;
70. a heat exchange zone; 71. a water tank; 72. a water outlet pipe; 73. and (4) a water inlet pipe.
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. 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.
Scheme one
The present invention provides a heat exchange tube, as shown in fig. 1 to 8, comprising: the tube body of the heat exchange tube is provided with an inner concave section 20, and a part of tube wall 22 of the inner concave section 20 is concave towards the inside of the tube body of the heat exchange tube and forms a flat cavity 21 with other tube walls 23 of the inner concave section 20. After the heat exchange medium enters the heat exchange tube, the heat exchange medium can flow through the flat cavity 21 of the inner concave section 20, the flow speed of the heat exchange medium can be accelerated by the flat cavity 21, the convection heat exchange coefficient is increased, heat exchange between the heat exchange medium and substances (such as water and other fluids) outside the heat exchange tube is facilitated, and therefore the heat exchange efficiency is increased.
The heat exchange tube can be applied to boilers. In an embodiment, the heat exchange tube can be used as a smoke tube, smoke generated by combustion in a boiler can flow through the heat exchange tube and exchange heat with water outside the heat exchange tube, the heat exchange tube can improve the flow speed of the smoke and increase the convection heat transfer coefficient, and therefore the heat exchange efficiency is improved. In another embodiment, the heat exchange tube can also be used as a water tube, smoke generated by combustion in the boiler flows through the heat exchange tube, water in the heat exchange tube exchanges heat with the smoke, the heat exchange tube can improve the flowing speed of the water, and the convection heat exchange coefficient is increased, so that the heat exchange efficiency is improved. The heat exchange tube solves the technical problem that the heat exchange efficiency of the heat exchange tube in the related technology is low.
As shown in fig. 3 and 4, the cross-section of the flat cavity 21 is generally in the shape of a curve extending in a concave shape, with the opposite walls of the cavity being concave in the same direction.
Further, the cross section of part of the tube wall 22 of the concave section 20 is arc-shaped, or the cross section of the other tube wall 23 of the concave section 20 is arc-shaped; or the cross sections of part of the pipe wall 22 and the other pipe walls 23 of the concave section 20 are arc-shaped. As shown in fig. 4, the flat chamber 21 has a semicircular ring shape. The heat exchange tube can be made of round tubes, and the round tubes are punched, so that part of tube walls of the round tubes are recessed and deformed towards one side, and an inner concave section 20 is formed.
Furthermore, the cross section of part of the tube wall 22 and the cross section of the other tube wall 23 are concentric circular arcs, which is beneficial to improving the heat exchange efficiency. Preferably, the central angle of the other tube walls 23, which are circular in cross section, is greater than 180 °. As shown in fig. 4 and 8, arc-shaped transition sections 24 are respectively disposed between two ends of other tube walls 23 and a part of tube walls 22, and the arc-shaped transition sections 24 are substantially semicircular, so that the heat exchange medium is uniformly distributed on the cross section of the flat cavity 21, and the heat exchange efficiency is further improved.
In one embodiment, the width of the flat cavity 21 may be 3 mm-8 mm, which is beneficial to increase the heat transfer coefficient of the heat transfer medium in the heat transfer tube to the external substance, thereby increasing the heat transfer efficiency.
In one embodiment, the ratio of the width of the flat cavity 21 to the outer diameter of the other tube walls 23 may be in a range of 0.08-0.2, so as to increase the heat convection coefficient between the heat exchange medium in the heat exchange tube and the external substance, thereby increasing the heat exchange efficiency. Preferably, the outer diameter of the other tube wall 23 ranges from 32mm to 89 mm.
In one embodiment, the other tube walls 23 are provided with at least one groove 231 recessed toward a portion of the tube wall 22, as shown in fig. 7-8, the groove 231 extends along the longitudinal direction of the heat exchange tube, which is beneficial to further increase the heat exchange area between the heat exchange medium and the heat exchange tube, and increase the heat exchange area between the heat exchange medium in the heat exchange tube and the external substance, thereby improving the heat exchange efficiency.
In one embodiment, the length of the inner concave section 20 is not less than 1/2 or 2/3 or 3/4 of the total length of the heat exchange tube.
The inventor carries out simulation test on the heat exchange tube, and the heat exchange efficiency of a prototype can be increased from 92% to 106%.
In one embodiment, the heat exchange tube comprises connecting sections 30 at two ends of the concave section 20, and the heat exchange tube is installed in the boiler through the connecting sections 30, so that the sealing performance between the tube cavity of the heat exchange tube and the outer cavity of the heat exchange tube is guaranteed.
When the heat exchange tube is arranged along the vertical direction, the longitudinal direction of the heat exchange tube is the vertical direction, and the plane vertical to the longitudinal direction of the heat exchange tube is parallel to the horizontal plane. Further, the connecting section 30 includes a circular tube section 31, the outer edge of the projection of the inner concave section 20 on the plane perpendicular to the longitudinal direction of the heat exchange tube does not exceed the outer edge of the projection of the circular tube section 31 on the plane perpendicular to the longitudinal direction of the heat exchange tube, so that the outer contour of the inner concave section 20 is smaller than that of the circular tube section 31, and when assembling, one end of the heat exchange tube sequentially passes through the mounting through holes for fixedly mounting the heat exchange tube, which simplifies the tube passing process, and facilitates the mounting of the two ends of the heat exchange tube on the mounting structures at the two ends respectively.
As shown in fig. 1, fig. 2, fig. 5 and fig. 6, a transition section 32 is further disposed between the circular tube section 31 and the concave section 20, and the circular tube section 31 and the concave section 20 are smoothly transited through the transition section 32, so that on one hand, the forming is facilitated, on the other hand, the smooth flow of the heat exchange medium in the heat exchange tube is facilitated, the flow velocity of the heat exchange medium is smoothly changed, and the heat exchange efficiency is improved. In one embodiment, the heat exchange tube is formed by stamping a round tube, and the transition section 32 may be formed naturally during stamping. Preferably, the ratio of the length of the transition section 32 to the outer diameter of the other tube wall 23 is 1.5-2, so that the heat exchange tube is convenient to manufacture and form and assemble in a boiler.
The heat exchange tube is not limited to be used for boilers, and can also be applied to other fluid heat exchange structures.
Scheme two
The present invention provides a heat exchange device, as shown in fig. 12 and 13, comprising: a first mounting body 41, a second mounting body 42 and a plurality of the heat exchange tubes 10 described above, wherein a first end of the heat exchange tube 10 is mounted to the first mounting body 41, and a second end of the heat exchange tube 10 is mounted to the second mounting body 42.
The first and second mounting bodies 41 and 42 position the heat exchange pipe 10.
The heat exchanger has all the functions and advantages of the heat exchanger tube 10, and will not be described herein.
Scheme three
The present invention provides a water heating apparatus, as shown in fig. 9 to 11, comprising: a heating device 50 and the heat exchange pipe 10 described above. The water heating apparatus has all the functions and advantages of the heat exchange pipe 10, which will not be described herein.
The water heating device may be a boiler, and the heating manner of the boiler is not limited to one, and may be combustion or electricity, for example. In one embodiment, the heating device 50 includes a combustion device 51, the heat exchange tubes 10 include a plurality of smoke tubes connected to the combustion device 51 for exchanging heat with the substance in the water heating device, and the smoke generated by combustion in the combustion device 51 flows through each heat exchange tube 10 to exchange heat with the substance outside the heat exchange tube 10, so as to increase the flow speed of the smoke, increase the convective heat transfer coefficient, and increase the heat exchange efficiency.
The boiler further comprises a first mounting body 41 for mounting one end of the smoke tube and a second mounting body 42 for mounting the other end of the smoke tube, as shown in fig. 9 and 11, the first mounting body 41 and the second mounting body 42 divide the boiler into a combustion area 61, a heat exchange area 70 and a smoke collection area 62, the combustion device 51 is arranged in the combustion area 61, the smoke tube is at least partially arranged in the heat exchange area 70, and the smoke collection area 62 is used for collecting smoke passing through the smoke tube. Further, the smoke collection area 62 is provided with a condensed water discharge pipe 63 for collecting liquid water generated by condensation of the smoke in the heat exchange pipe 10. The combustion device 51 may be a furnace. The heat exchange area 70 can be provided with a water tank 71, wherein the upper end of the water tank 71 is connected with a water outlet pipe 72, and the lower end of the water tank 71 is connected with a water inlet pipe 73.
In fig. 9, only one heat exchange pipe 10 is shown in order to express the connection structure of the heat exchange pipe 10 with the first and second installation bodies 41 and 42 more clearly. Specifically, the first mounting body 41 and the second mounting body 42 are respectively provided with a plurality of through holes, the upper end of the heat exchange tube 10 is inserted into the through hole of the first mounting body 41 and welded to the first mounting body 41, and the lower end of the heat exchange tube 10 is inserted into the through hole of the second mounting body 42 and welded to the second mounting body 42.
In another embodiment, the heating device 50 includes a combustion device 51, the heat exchange tube 10 includes a plurality of water tubes for exchanging heat with the flue gas of the combustion device 51, the flue gas generated by combustion in the combustion device 51 flows through the heat exchange tube 10, the water in the heat exchange tube 10 exchanges heat with the flue gas, the heat exchange tube 10 can increase the flow velocity of the water, increase the convective heat transfer coefficient, and thus increase the heat exchange efficiency.
The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.
Claims (17)
1. A heat exchange tube, comprising: and part of the pipe wall of the concave section is sunken towards the inside of the pipe body of the heat exchange pipe, and forms a flat cavity with other pipe walls of the concave section.
2. The heat exchange tube of claim 1, wherein the cross section of the partial tube wall of the concave section and/or the other tube walls of the concave section is arc-shaped.
3. The heat exchange tube of claim 2, wherein the cross section of the partial tube wall is concentric with the cross section of the other tube wall in a circular arc shape.
4. A heat exchange tube according to claim 2, wherein the central angle of the other tube walls having the circular arc-shaped cross section is larger than 180 °.
5. The heat exchange tube of claim 2, wherein an arc-shaped transition section is respectively arranged between the two ends of the other tube wall and the partial tube wall.
6. A heat exchange tube according to any one of claims 1 to 5, wherein the width of the flat chamber is in the range of 3mm to 8 mm.
7. The heat exchange tube of any one of claims 1 to 5, wherein the ratio of the width of the flat cavity to the outer diameter of the other tube wall is in the range of 0.08 to 0.2.
8. A heat exchange tube according to any one of claims 1 to 5, wherein the other tube wall is provided with at least one groove recessed towards the partial tube wall.
9. The heat exchange tube of any one of claims 1 to 5, wherein the length of the inner concave section is not less than 1/2 or 2/3 or 3/4 of the total length of the heat exchange tube.
10. A heat exchange tube according to any one of claims 1 to 5, wherein the heat exchange tube comprises connecting sections at both ends of the concave section.
11. The heat exchange tube of claim 10, wherein the connection section comprises a round tube section, and the outer edge of the projection of the concave section on the plane perpendicular to the longitudinal direction of the heat exchange tube does not exceed the outer edge of the projection of the round tube section on the plane perpendicular to the longitudinal direction of the heat exchange tube.
12. The heat exchange tube of claim 11, wherein a transition section is further disposed between the circular tube section and the concave section.
13. A heat exchange device, comprising: a first mounting body, a second mounting body, and a plurality of heat exchange tubes as recited in any one of claims 1-12, said heat exchange tubes having a first end mounted to said first mounting body and a second end mounted to said second mounting body.
14. A water heating apparatus, comprising: a heating apparatus and a heat exchange tube as claimed in any one of claims 1 to 12.
15. The water heating apparatus according to claim 14, wherein the water heating apparatus comprises a boiler, the heating apparatus comprises a combustion apparatus, and the heat exchange pipe comprises a plurality of flue pipes connected to the combustion apparatus for exchanging heat with a substance in the water heating apparatus.
16. The water heating apparatus as claimed in claim 15, wherein the boiler further comprises a first mounting body for mounting one end of the smoke tube and a second mounting body for mounting the other end of the smoke tube, the first mounting body and the second mounting body divide the boiler into a combustion region, a heat exchange region and a smoke collection region, the combustion apparatus is disposed in the combustion region, the smoke tube is at least partially disposed in the heat exchange region, and the smoke collection region is used for collecting smoke passing through the smoke tube.
17. The water heating apparatus according to claim 14, wherein the water heating apparatus comprises a boiler, the heating apparatus comprises a combustion apparatus, and the heat exchange pipe comprises a plurality of water pipes for exchanging heat with flue gas of the combustion apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123156221.2U CN216409817U (en) | 2021-12-15 | 2021-12-15 | Heat exchange tube, heat exchange device and water heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123156221.2U CN216409817U (en) | 2021-12-15 | 2021-12-15 | Heat exchange tube, heat exchange device and water heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216409817U true CN216409817U (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123156221.2U Active CN216409817U (en) | 2021-12-15 | 2021-12-15 | Heat exchange tube, heat exchange device and water heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216409817U (en) |
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2021
- 2021-12-15 CN CN202123156221.2U patent/CN216409817U/en active Active
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