CN213363532U - Evaporation heat exchange tube - Google Patents
Evaporation heat exchange tube Download PDFInfo
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- CN213363532U CN213363532U CN202022132839.4U CN202022132839U CN213363532U CN 213363532 U CN213363532 U CN 213363532U CN 202022132839 U CN202022132839 U CN 202022132839U CN 213363532 U CN213363532 U CN 213363532U
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- Prior art keywords
- heat exchange
- exchange tube
- tube
- wall
- section
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- 238000001704 evaporation Methods 0.000 title claims abstract description 34
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 210000000614 Ribs Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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Abstract
The utility model provides an evaporation heat exchange tube, the tube body of which comprises a smooth section and a rolling section, wherein the rolling section comprises an in-tube strengthening and an out-of-tube strengthening; the reinforcement in the pipe is characterized in that a plurality of internal threads are arranged on the inner wall; the outer pipe reinforcement comprises an axially arranged fin reinforcement, a first groove with a wide bottom opening is formed between any two adjacent large fins, and a twill reinforcement is arranged in the circumferential direction. The utility model discloses an it is intraductal and the outside of tubes reinforces to show to have improved single tube heat transfer area, and makes the turbulent state of liquid improve by a wide margin through the optimal design to the groove structure, improves the coefficient of heat transfer of inside and outside pipe surface to evaporation heat exchange tube's heat exchange capacity has been strengthened.
Description
Technical Field
The utility model relates to a thermal cycle technical field especially relates to an evaporation heat exchange tube.
Background
For large central air conditioning units, the evaporator plays an important role in the thermal cycle process. Specifically, an evaporation heat exchange tube is arranged in the evaporator, refrigerant and cooling water flow outside and inside the evaporation heat exchange tube respectively, the cooling water transfers heat outwards through a tube wall, the refrigerant is conveyed to an indoor unit to finish refrigeration after being cooled, and the refrigerant is evaporated into steam through absorbing the heat from the tube wall. Therefore, the heat transfer efficiency between the cooling water and the refrigerant is related to the heat exchange power of the evaporating heat exchange tube.
To increase the heat exchange power of the evaporator, the most effective method is to increase the heat exchange area. The technical means commonly used in the industry are as follows: directly increasing the number of evaporation heat exchange tubes; however, the method has great volume increment on the whole equipment and is eliminated in recent years; secondly, the rib height of the evaporation heat exchange tube is increased; however, the higher the ribs are, the higher the manufacturing cost of the tube is, and when the surface area of the evaporation heat exchange tube is increased to a certain extent, the increasing speed of the heat exchange power backwards can not completely follow the increasing speed of the cost, and the cost performance is not high.
For evaporative heat transfer outside the tubes, the core is the vaporization of the liquid, i.e., the generation of gas bubbles on the heat transfer surface. Researches show that the heat transfer efficiency can be effectively improved by the formation and growth of bubbles and various disturbances generated by separating from the heating surface, and pits, fine seams, cracks and the like on the wall surface of the evaporation heat exchange tube are favorable for generating vaporization cores.
Therefore, there is a need in the art to develop a new evaporation heat exchange tube to meet the higher requirements for heat exchange efficiency, service life and economic benefits of the evaporation heat exchange tube due to the application requirements of the evaporator.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an evaporation heat exchange tube that heat exchange capacity is high and price/performance ratio is high to solve the problem that proposes in the background art.
In order to achieve the above object, the utility model provides an evaporation heat exchange tube, evaporation heat exchange tube's body includes light section and rolling section, the inner wall and the outer wall of light section are glossy surface it reinforces to be equipped with the fin on the outer wall of rolling section along the axial direction, and forms the narrow first groove of the wide opening in bottom between two arbitrary adjacent big fins.
Preferably, the density of the large fins is 26 to 42 fins/inch, the width of the bottom of the first groove is 0.30 to 0.60mm, and the width of the opening is 0.10 to 0.30 mm.
Preferably, the outer wall of the rolling section is circumferentially provided with twill reinforcement, the top of each large fin is divided into a plurality of twill small fins, and a second groove with a wide bottom and a narrow opening is formed between any two adjacent twill small fins.
Preferably, the width of the bottom of the second groove is 0.10 mm-0.30 mm, and the width of the opening is 0.05 mm-0.30 mm.
Preferably, the outer diameter of the light section is 12.7 mm-25.4 mm, and the wall thickness is 0.7 mm-1.5 mm.
Preferably, the pipe body is made of an industrial pure titanium pipe or a titanium alloy welded pipe by cold rolling.
Preferably, the inner wall of the rolling section is also provided with an internal thread.
Preferably, the density of the internal threads is 10 to 30 threads/turn.
Preferably, the included angle between the internal thread and the central axis of the pipe body is 30-45 degrees.
Preferably, the height of the internal thread is 0.10mm to 0.30 mm.
The utility model provides a technical scheme has following beneficial effect at least:
1. the utility model provides an evaporation heat exchange tube adopts titanium and titanium alloy plain tube processing to form, full play titanium material advantage in the aspect of corrosion-resistant, low density and high specific strength, have characteristics such as long-life, lightweight and permanent stability.
2. The utility model discloses a to the intensive processing of body, formed the bigger tubular product of surface area under the unit length, showing the single tube heat transfer area who has improved the evaporation heat exchange tube, its outer surface area can reach 3 times of fluorescent tube. The heat exchange capacity of the heat exchange pipe is enhanced.
3. The utility model has the advantages that the width of the opening of the first groove is smaller than the width of the bottom by strengthening the fins in the axial direction, when liquid is evaporated on the outer surface of the heat exchange tube, the volume of bubbles is favorably controlled, continuous bubble columns are formed, the turbulent state of the outer surface of the tube is greatly improved, and the heat transfer coefficient of the outer surface of the tube is improved; through the strengthening of the twill in the circumferential direction, the opening width of the second groove is smaller than the width of the bottom, so that the liquid film on the wall surface of the pipe is thinned, the thermal resistance is reduced, the effect of a channel can be achieved, the convection is promoted, and the heat transfer coefficient is improved.
4. The utility model discloses a set up the helicitic texture in the pipe, under the condition that does not increase medium pump sending ability, make the velocity of flow and the turbulent state of liquid when the flow is in charge of inboard increase substantially, improve the pipe internal surface coefficient of heat transfer to whole heat exchange capacity who has improved the heat exchange tube.
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 are briefly introduced below, it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts, wherein:
fig. 1 is a radial sectional view (only a part is shown) of an evaporating heat exchange tube in embodiment 1 of the present invention;
fig. 2 is an axial sectional view (only a part of which is shown) of an evaporating heat exchange tube in embodiment 1 of the present invention;
figure 3 is a radial section view (only part shown) of an evaporating heat exchange tube in embodiment 2 of the present invention;
fig. 4 is an axial sectional view (only a part of which is shown) of an evaporating heat exchange tube in embodiment 2 of the present invention;
wherein: 1 rolling section, 2 first groove, 3 second groove and 4 internal thread.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1:
referring to fig. 1 and 2, an evaporation heat exchange tube is made of an industrial pure titanium tube or a titanium alloy welded tube by cold rolling, and a tube body of the evaporation heat exchange tube comprises a smooth section and a rolling section 1.
The inner wall and the outer wall of the light section are both smooth surfaces, the outer diameter of the light section is 12.7-25.4 mm, and the wall thickness is 0.7-1.5 mm.
The outer wall of the rolling section 1 is provided with an outer pipe reinforcement, which is as follows:
the outer wall of the rolling section 1 is provided with fin reinforcement along the axial direction, namely a plurality of large fins are arranged along the axial direction, and the single large fin is arranged along the circumferential direction of the outer wall of the tube in a surrounding manner. The density of the large fins is 26-42 per inch, a first groove 2 with a wide bottom and a narrow opening is formed between any two adjacent large fins, the width of the bottom of the first groove 2 is 0.30-0.60 mm, and the width of the opening is 0.10-0.30 mm.
And twill strengthening is arranged on the outer wall of the rolling section 1 along the circumferential direction, namely grains are additionally arranged on each fin along the circumferential direction. The top of each large fin is divided into a plurality of twill small fins, a second groove 3 with a wide bottom and a narrow opening is formed between any two adjacent twill small fins, the width of the bottom of the second groove 3 is 0.10-0.30 mm, and the width of the opening is 0.05-0.30 mm.
The first groove 2 and the second groove 3 are intersected and both play roles in increasing the heat transfer area and improving the heat transfer coefficient of the outer surface of the pipe.
Example 2:
referring to fig. 3 and 4, an evaporation heat exchange tube is made of an industrial pure titanium tube or a titanium alloy welded tube by cold rolling, and a tube body of the evaporation heat exchange tube comprises a smooth section and a rolling section 1.
The inner wall and the outer wall of the light section are both smooth surfaces, the outer diameter of the light section is 12.7-25.4 mm, and the wall thickness is 0.7-1.5 mm.
The outer wall of the rolling section 1 is provided with an outer pipe reinforcement, which is as follows:
the outer wall of the rolling section 1 is provided with fin reinforcement along the axial direction, namely a plurality of large fins are arranged along the axial direction, and the single large fin is arranged along the circumferential direction of the outer wall of the tube in a surrounding manner. The density of the large fins is 26-42 per inch, a first groove 2 with a wide bottom and a narrow opening is formed between any two adjacent large fins, the width of the bottom of the first groove 2 is 0.30-0.60 mm, and the width of the opening is 0.10-0.30 mm.
And twill strengthening is arranged on the outer wall of the rolling section 1 along the circumferential direction, namely grains are additionally arranged on each fin along the circumferential direction. The top of each large fin is divided into a plurality of twill small fins, a second groove 3 with a wide bottom and a narrow opening is formed between any two adjacent twill small fins, the width of the bottom of the second groove 3 is 0.10-0.30 mm, and the width of the opening is 0.05-0.30 mm.
The first groove 2 and the second groove 3 are intersected and both play roles in increasing the heat transfer area and improving the heat transfer coefficient of the outer surface of the pipe.
The rolling section 1 is also provided with in-tube strengthening, in particular to the arrangement of internal threads 4 on the inner wall. The density of the internal thread 4 is 10-30 per circle, the included angle between the internal thread 4 and the central axis of the pipe body is 30-45 degrees, and the height of the internal thread 4 is 0.10-0.30 mm.
The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any improvement or equivalent replacement made by utilizing the contents of the specification and the drawings of the present invention can be directly or indirectly applied to other related technical fields within the spirit and principle of the present invention, and shall be included in the scope of the present invention.
Claims (10)
1. The utility model provides an evaporation heat exchange tube, its characterized in that, evaporation heat exchange tube's body includes smooth section and rolling section (1), the inner wall and the outer wall of smooth section are glossy surface it reinforces to be equipped with the fin along the axial on the outer wall of rolling section (1), and forms the narrow first groove of wide opening in bottom (2) between two arbitrary adjacent big fins.
2. The evaporative heat exchange tube as recited in claim 1, wherein the density of the large fins is 26-42/inch, the width of the bottom of the first channel (2) is 0.30-0.60 mm, and the width of the opening is 0.10-0.30 mm.
3. The evaporative heat exchange tube as recited in claim 2, wherein the outer wall of the rolling section (1) is provided with twill reinforcement along the circumferential direction, the top of each large fin is divided into a plurality of twill small fins, and a second groove (3) with a wide bottom and a narrow opening is formed between any two adjacent twill small fins.
4. The heat exchange tube for evaporation according to claim 3, wherein the width of the bottom of the second groove (3) is 0.10 mm-0.30 mm, and the width of the opening is 0.05 mm-0.30 mm.
5. An evaporating heat exchange tube as recited in any one of claims 1 to 4, wherein the outer diameter of the light section is 12.7mm to 25.4mm, and the wall thickness is 0.7mm to 1.5 mm.
6. An evaporating heat exchange tube as recited in claim 5 wherein said tube body is made by cold rolling of an industrial pure titanium tube or a titanium alloy welded tube.
7. An evaporating heat exchange tube according to claim 6, characterised in that the inner wall of the rolled section (1) is also provided with an internal thread (4).
8. The evaporating heat exchange tube of claim 7, wherein the density of said internal threads (4) is 10-30 threads/turn.
9. An evaporator heat exchange tube according to claim 8, wherein the included angle between the internal thread (4) and the central axis of the tube body is 30-45 °.
10. An evaporator heat exchange tube according to claim 9, wherein the height of the internal thread (4) is 0.10 mm-0.30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022132839.4U CN213363532U (en) | 2020-09-25 | 2020-09-25 | Evaporation heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022132839.4U CN213363532U (en) | 2020-09-25 | 2020-09-25 | Evaporation heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213363532U true CN213363532U (en) | 2021-06-04 |
Family
ID=76155452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022132839.4U Active CN213363532U (en) | 2020-09-25 | 2020-09-25 | Evaporation heat exchange tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213363532U (en) |
-
2020
- 2020-09-25 CN CN202022132839.4U patent/CN213363532U/en active Active
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