CN112944990A - Heat exchange tube, heat exchanger and air conditioner - Google Patents
Heat exchange tube, heat exchanger and air conditioner Download PDFInfo
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- CN112944990A CN112944990A CN201911259868.2A CN201911259868A CN112944990A CN 112944990 A CN112944990 A CN 112944990A CN 201911259868 A CN201911259868 A CN 201911259868A CN 112944990 A CN112944990 A CN 112944990A
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- 239000012530 fluid Substances 0.000 abstract description 44
- 238000012546 transfer Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 238000005728 strengthening Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 230000003313 weakening effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明提供一种换热管、换热器和空调器，换热管包括：管基体(1)和设置在所述管基体(1)内壁上的第一齿(2)和第二齿(3)，所述第一齿(2)和第二齿(3)均为从所述管基体(1)的内壁处朝内凸出延伸的齿结构，且在经过所述管基体(1)的轴线的纵向截面内、所述第一齿(2)的截面形状为梯形而形成梯形齿、所述第二齿(3)的截面形状为三角形而形成为三角形齿。通过本发明采用梯形齿和三角形齿能够形成不同齿高的结构，有利于二次减薄近壁面流体边界层，当非相变流体流过换热管内壁时，换热管近壁面处的流体边界层被拉伸的更薄，降低热阻，增强换热，这增大了管内PEC系数。
The invention provides a heat exchange tube, a heat exchanger and an air conditioner. The heat exchange tube comprises: a tube base body (1) and first teeth (2) and second teeth (2) arranged on the inner wall of the tube base body (1). 3), the first teeth (2) and the second teeth (3) are both tooth structures protruding inwardly from the inner wall of the pipe base (1), and when passing through the pipe base (1) In the longitudinal section of the axis of the first tooth (2), the cross-sectional shape of the first tooth (2) is a trapezoid to form a trapezoidal tooth, and the cross-sectional shape of the second tooth (3) is a triangle to form a triangular tooth. By adopting trapezoidal teeth and triangular teeth in the present invention, structures with different tooth heights can be formed, which is beneficial to the secondary thinning of the fluid boundary layer near the wall. When the non-phase change fluid flows through the inner wall of the heat exchange tube, the fluid near the wall of the heat exchange tube The boundary layer is stretched thinner, reducing thermal resistance and enhancing heat transfer, which increases the PEC coefficient in the tube.
Description
Technical Field
The invention belongs to the technical field of heat exchange, and particularly relates to a heat exchange tube, a heat exchanger and an air conditioner.
Background
With the rapid development of social economy, global energy and environmental problems become more prominent, and the society has an increasing demand for energy conservation and emission reduction. In the field of heat exchangers, heat transfer enhancement technology has advanced and developed greatly over the last three decades. In particular, in the field of heat exchange tube reinforcement, researchers have developed various heat exchange tubes such as evaporation tubes, condensation tubes, heat pump tubes, and the like from the perspective of reinforcement of the inside and outside of the tubes. In the aspect of strengthening in the heat exchange tube, the strengthening of the conventional internal thread enters the fields of three-dimensional low-rib strengthening, strengthening of a built-in flow-surrounding device and the like. For a commercial water chilling unit using water as a secondary refrigerant in a heat exchange pipe, the heat transfer mode in the heat exchange pipe is non-phase-change forced convection heat transfer. Generally, the reinforcement performance in the heat exchange tube is comprehensively evaluated by using the reinforcement rate in the tube and the pressure drop of a single tube (namely, the PEC represents the ratio of the reinforcement rate in the tube to the frictional resistance in the heat exchange tube, and the larger the value is, the higher the heat exchange performance is). Namely, the enhancement magnification in the tube and the reduction of the water pressure drop in the tube are the enhancement directions in the heat exchange tube.
Because the PEC coefficient in a general heat exchange tube in the prior art is not high, and the general processing method has more material consumption and the like, the invention researches and designs the heat exchange tube, the heat exchanger and the air conditioner.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect of low PEC coefficient in the heat exchange tube in the prior art, and to provide a heat exchange tube, a heat exchanger and an air conditioner.
The present invention provides a heat exchange tube, comprising:
the pipe comprises a pipe base body and a first tooth and a second tooth which are arranged on the inner wall of the pipe base body, wherein the first tooth and the second tooth are both tooth structures which protrude inwards from the inner wall of the pipe base body, the cross section of the first tooth is trapezoidal to form trapezoidal teeth, and the cross section of the second tooth is triangular to form triangular teeth in a longitudinal cross section passing through the axis of the pipe base body.
Preferably, the first and second electrodes are formed of a metal,
the number of the first teeth is multiple, and the multiple first teeth are distributed on the inner wall of the pipe base body along a spiral line to form a row of trapezoidal teeth; and/or the second teeth are distributed on the inner wall of the pipe base body along a spiral line to form a row of triangular teeth.
Preferably, the first and second electrodes are formed of a metal,
the trapezoidal teeth are arranged in multiple rows along the axial direction of the tube base body to form multiple rows of trapezoidal teeth; and/or the triangular teeth are arranged in multiple rows, and the multiple rows of the triangular teeth are arranged along the axial direction of the pipe base body to form multiple rows of the triangular teeth.
Preferably, the first and second electrodes are formed of a metal,
the trapezoidal teeth and the triangular teeth are distributed in a staggered mode, a row of triangular teeth is arranged between every two rows of trapezoidal teeth, and a row of trapezoidal teeth is arranged between every two rows of triangular teeth.
Preferably, the first and second electrodes are formed of a metal,
in each row of the trapezoidal teeth, a plurality of the first teeth are discontinuously and sequentially arranged; and/or, in each row of the trapezoidal teeth, a plurality of the first teeth are discontinuously and sequentially arranged; and/or the helix angle beta of a row of trapezoidal teeth distributed along the spiral is 30-70 degrees; and/or the helix angle beta of the row of triangular teeth distributed along the helix is 30-70 deg.
Preferably, the first and second electrodes are formed of a metal,
the tooth width L1 of the trapezoidal tooth is 0.4mm-1.0 mm; and/or the height h1 of the trapezoidal teeth is 0.2mm-0.5 mm; and/or the crest angle theta 1 of the trapezoidal teeth is 30-70 degrees.
Preferably, the first and second electrodes are formed of a metal,
the tooth width L2 of the triangular teeth is 0.2mm-0.6 mm; and/or the height h2 of the triangular teeth is 0.1mm-0.4 mm; and/or the crest angle theta 2 of the triangular teeth is 15-45 degrees.
Preferably, the first and second electrodes are formed of a metal,
the first tooth and/or the second tooth can also be arranged as a "mountain" shaped tooth with a longitudinal cross-sectional shape of a "mountain"; and/or the heat exchange tube further comprises a third tooth arranged on the inner wall of the tube base body, the third tooth is a tooth structure which protrudes inwards from the inner wall of the tube base body, and the cross section of the third tooth in a longitudinal section passing through the axis of the tube base body is in a mountain shape, so that the mountain-shaped tooth is formed.
The invention also provides a heat exchanger which comprises the heat exchange tube in any one of the preceding items.
The invention also provides an air conditioner, which comprises the heat exchange tube or the heat exchanger.
The heat exchange tube, the heat exchanger and the air conditioner provided by the invention have the following beneficial effects:
according to the invention, the inner wall of the tube substrate of the heat exchange tube is provided with the trapezoidal tooth structure and the triangular tooth structure which are convexly extended towards the inside, and the trapezoidal tooth and the triangular tooth can form structures with different tooth heights, so that the secondary thinning of a fluid boundary layer close to the wall surface is facilitated; the discontinuous internal tooth structure changes the flow pattern of the fluid of the heat exchange tube, and compared with continuous internal thread teeth, the internal tooth structure changes the flow pattern of the fluid from two-dimensional flow to three-dimensional flow, greatly enhances the turbulence degree of the fluid and strengthens heat exchange. Meanwhile, the discontinuity of the teeth reduces the resistance of the inner wall to fluid and the pressure drop of the inlet and the outlet of the single tube, and the discontinuous teeth reduce the weight of a single heat exchange tube relative to continuous teeth and reduce the cost of the heat exchange tube.
Drawings
FIG. 1 is a three-dimensional block diagram of a partial section of a heat exchange tube of the present invention;
FIG. 2 is a partially enlarged structural view of portion A in FIG. 1;
FIG. 3 is an axial cross-sectional view of a heat exchange tube of the present invention;
FIG. 4 is a partially enlarged structural view of a portion B in FIG. 3;
FIG. 5 is an axial cross-sectional view of an alternate embodiment of a partial section of the heat exchange tube of the present invention;
fig. 6 is a partially enlarged structural view of a portion C in fig. 5.
The reference numbers in the figures denote:
1. a tube base; 2. a first tooth; 3. a second tooth; 4. a 'mountain' shaped tooth.
Detailed Description
As shown in fig. 1 to 6, the present invention provides a heat exchange tube comprising:
the pipe comprises a pipe base body 1 and a first tooth 2 and a second tooth 3 which are arranged on the inner wall of the pipe base body 1, wherein the first tooth 2 and the second tooth 3 are both tooth structures which protrude inwards from the inner wall of the pipe base body 1, the cross section of the first tooth 2 in a longitudinal section passing through the axis of the pipe base body 1 is trapezoidal to form trapezoidal teeth, and the cross section of the second tooth 3 in a triangular shape to form triangular teeth.
The invention arranges the trapezoid tooth structure and the triangle tooth structure which are extended and protruded towards the inner part on the inner wall of the tube matrix of the heat exchange tube, and adopts the trapezoid tooth and the triangle tooth to form structures with different tooth heights, thereby being beneficial to secondarily thinning the fluid boundary layer near the wall surface.
Preferably, the first and second electrodes are formed of a metal,
the number of the first teeth 2 is multiple, and the multiple first teeth 2 are distributed on the inner wall of the pipe base body 1 along a spiral line to form a row of trapezoidal teeth; and/or the number of the second teeth 3 is multiple, and the multiple second teeth 3 are arranged on the inner wall of the pipe base body 1 along a spiral line to form a row of triangular teeth. The first teeth and the second teeth are in a further preferable structural form, a spiral row of trapezoidal teeth are formed by the plurality of first teeth, a turbulent flow effect can be formed on fluid in the pipe along the spiral line direction, a boundary layer is weakened, and the effect is better; a spiral row of triangular teeth are formed through the plurality of second teeth, so that a turbulent flow effect can be formed on fluid along the spiral line direction in the pipe, a boundary layer is weakened, and the effect is better.
Preferably, the first and second electrodes are formed of a metal,
the trapezoidal teeth are arranged in multiple rows, and the multiple rows of trapezoidal teeth are arranged along the axial direction of the tube base body 1 to form multiple rows of trapezoidal teeth; and/or the triangular teeth are arranged in multiple rows, and the multiple rows of the triangular teeth are arranged along the axial direction of the pipe base body 1 to form multiple rows of the triangular teeth. The multi-row trapezoidal teeth can further improve the turbulent flow forming effect on the fluid in the axial direction in the pipe and act on the fluid discontinuously, so that the weakening effect of the boundary layer of the fluid is stronger; the effect that multirow triangle-shaped tooth can further improve the formation vortex to the fluid in intraductal axial direction, acts on the fluid discontinuously for the weakening effect of the boundary layer of fluid is stronger.
Preferably, the first and second electrodes are formed of a metal,
the trapezoidal teeth and the triangular teeth are distributed in a staggered mode, a row of triangular teeth is arranged between every two rows of trapezoidal teeth, and a row of trapezoidal teeth is arranged between every two rows of triangular teeth. The preferred arrangement mode between the multiple rows of trapezoidal teeth and the multiple rows of triangular teeth is a mode of staggered arrangement, which can form the phenomenon of tooth height which is a trend in the direction of the fluid flowing along the axial direction, so that the fluid boundary layer near the wall surface can be thinned to the minimum, the thermal resistance is further reduced, the strengthening performance in the pipe is improved, and the PEC coefficient in the pipe is increased.
Preferably, the first and second electrodes are formed of a metal,
in each row of the trapezoidal teeth, a plurality of the first teeth 2 are arranged in turn in a discontinuous manner; and/or, in each row of the triangular teeth, a plurality of the second teeth 3 are arranged in sequence at intervals; and/or the helix angle beta of the row of trapezoidal teeth distributed along the helix is 30-70 degrees, preferably 45 degrees; and/or the helix angle beta of the row of triangular teeth distributed along the helix is 30-70 deg. The invention adopts a plurality of arrangement modes of the first teeth and the second teeth, changes the flow pattern of the fluid of the heat exchange tube through the discontinuous internal tooth structure, and compared with the continuous internal thread teeth, the invention changes the flow pattern of the fluid from two-dimensional flow to three-dimensional flow, greatly enhances the turbulence degree of the fluid and strengthens the heat exchange. Meanwhile, the discontinuity of the teeth reduces the resistance of the inner wall to fluid and the pressure drop of the inlet and the outlet of the single tube, and the discontinuous teeth reduce the weight of a single heat exchange tube relative to continuous teeth and reduce the cost of the heat exchange tube. The helix angle beta of each row of trapezoidal teeth or triangular teeth is set to be 30-70 degrees, so that the disturbance effect on fluid in the fluid flowing direction can be further enhanced, the thermal resistance is reduced, and the heat exchange is enhanced.
Preferably, the first and second electrodes are formed of a metal,
the tooth width L1 of the trapezoidal tooth is 0.4mm-1.0mm, preferably 0.6 mm; and/or the height h1 of the trapezoidal teeth is 0.2mm-0.5mm, preferably 0.4 mm; and/or the crest angle θ 1 of the trapezoidal tooth is 30 ° to 70 °, preferably 60 °. The preferred size of the trapezoidal tooth of the invention can limit the trapezoidal tooth from the width, the height and the tooth crest angle, further enhance the effect of reducing the boundary layer, reduce the flow speed of the fluid if the width is not too wide, reduce the flow speed of the fluid if the width is not too narrow, or have insufficient turbulent flow effect on the fluid, prevent the fluid resistance from being too high to influence normal flow and increase loss if the height is not too high, and prevent the weakening effect of the boundary layer of the fluid from being not obvious if the height is not too low.
Preferably, the first and second electrodes are formed of a metal,
the tooth width L2 of the triangular teeth is 0.2mm-0.6mm, preferably 0.4 mm; and/or the height h2 of the triangular teeth is 0.1mm-0.4mm, preferably 0.2 mm; and/or the crest angle θ 2 of the triangular teeth is 15 ° to 45 °, preferably 30 °. The preferred size of the trapezoidal tooth of the invention can limit the triangular tooth from the width, the height and the tooth crest angle, further enhance the effect of reducing the boundary layer, reduce the flow velocity of the fluid if the width is not too wide, reduce the flow turbulence effect if the width is not too narrow, prevent the fluid resistance from being too large to influence the normal flow and increase the loss if the height is not too high, and prevent the weakening effect of the boundary layer of the fluid from being too low.
As shown in fig. 5-6, preferably,
the first tooth 2 and/or the second tooth 3 can also be provided as a "mountain" shaped tooth 4 having a "mountain" shaped longitudinal cross-sectional shape; and/or the heat exchange tube further comprises a third tooth arranged on the inner wall of the tube base body 1, the third tooth is a tooth structure which protrudes inwards from the inner wall of the tube base body 1, and the cross section of the third tooth in a longitudinal section passing through the axis of the tube base body 1 is in a mountain shape to form a mountain-shaped tooth 4. In order to further strengthen the heat exchange in the tube, a mountain-shaped discontinuous tooth structure and triangular discontinuous teeth can be used as another combination scheme of the inner teeth of the heat exchange tube, the mountain-shaped discontinuous teeth have strong disturbance to the fluid, and the processing can be carried out on the basis of the trapezoid only.
The invention also provides a heat exchanger which comprises the heat exchange tube in any one of the preceding items. The inner wall of the tube matrix of the heat exchange tube is provided with the trapezoidal tooth structure and the triangular tooth structure which are convexly extended towards the inside, and the trapezoidal tooth and the triangular tooth can form structures with different tooth heights, so that the secondary thinning of a fluid boundary layer close to the wall surface is facilitated; the discontinuous internal tooth structure changes the flow pattern of the fluid of the heat exchange tube, and compared with continuous internal thread teeth, the internal tooth structure changes the flow pattern of the fluid from two-dimensional flow to three-dimensional flow, greatly enhances the turbulence degree of the fluid and strengthens heat exchange. Meanwhile, the discontinuity of the teeth reduces the resistance of the inner wall to fluid and the pressure drop of the inlet and the outlet of the single tube, and the discontinuous teeth reduce the weight of a single heat exchange tube relative to continuous teeth and reduce the cost of the heat exchange tube.
The invention also provides an air conditioner, which comprises the heat exchange tube or the heat exchanger. The invention develops a multi-tooth discontinuously-distributed reinforced pipe in the inner circumference of the pipe; the PEC coefficient in the heat exchange tube is improved and the material consumption of the heat exchange tube is reduced by processing various types of discontinuous strengthening teeth on the inner wall of the heat exchange tube along the spiral direction.
The independent internal teeth of the invention increase the heat exchange area of the inner wall of the heat exchange tube. Compared with continuous internal thread teeth, the discontinuous internal tooth structure changes the flow pattern of fluid of the heat exchange tube from two-dimensional flow to three-dimensional flow, greatly enhances the turbulence degree of the fluid and strengthens heat exchange. Meanwhile, the discontinuity of the teeth reduces the resistance of the inner wall to fluid and reduces the pressure drop of the single pipe inlet and outlet. In addition, the mode that the trapezoidal teeth and the triangular teeth have different tooth heights is adopted, so that the near-wall fluid boundary layer can be thinned for the second time, the thermal resistance is reduced, and the heat exchange is enhanced. This enhanced performance and reduced fluid pressure drop profile within the riser generally increases the PEC factor within the tube. In addition, because the adopted discontinuous teeth reduce the weight of a single heat exchange tube and reduce the cost of the heat exchange tube.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A heat exchange tube, its characterized in that: the method comprises the following steps:
the pipe comprises a pipe base body (1), and a first tooth (2) and a second tooth (3) which are arranged on the inner wall of the pipe base body (1), wherein the first tooth (2) and the second tooth (3) are tooth structures which protrude inwards from the inner wall of the pipe base body (1), and in a longitudinal section passing through the axis of the pipe base body (1), the sectional shape of the first tooth (2) is trapezoidal to form a trapezoidal tooth, and the sectional shape of the second tooth (3) is triangular to form a triangular tooth.
2. The heat exchange tube of claim 1, wherein:
the number of the first teeth (2) is multiple, and the multiple first teeth (2) are distributed on the inner wall of the pipe base body (1) along a spiral line to form a row of trapezoidal teeth; and/or the second teeth (3) are multiple, and the multiple second teeth (3) are distributed on the inner wall of the pipe base body (1) along a spiral line to form a row of triangular teeth.
3. The heat exchange tube of claim 2, wherein:
the trapezoidal teeth are arranged in multiple rows, and the multiple rows of the trapezoidal teeth are arranged along the axial direction of the tube base body (1) to form multiple rows of the trapezoidal teeth; and/or the triangular teeth are arranged in multiple rows, and the multiple rows of the triangular teeth are arranged along the axial direction of the pipe base body (1) to form multiple rows of the triangular teeth.
4. A heat exchange tube according to claim 3, wherein:
the trapezoidal teeth and the triangular teeth are distributed in a staggered mode, a row of triangular teeth is arranged between every two rows of trapezoidal teeth, and a row of trapezoidal teeth is arranged between every two rows of triangular teeth.
5. A heat exchange tube according to any one of claims 2 to 4, wherein:
in each row of the trapezoidal teeth, a plurality of the first teeth (2) are arranged in turn in a discontinuous manner; and/or, in each row of the triangular teeth, a plurality of the second teeth (3) are arranged in turn in a discontinuous manner; and/or the helix angle beta of a row of trapezoidal teeth distributed along the spiral is 30-70 degrees; and/or the helix angle beta of the row of triangular teeth distributed along the helix is 30-70 deg.
6. A heat exchange tube according to any one of claims 1 to 5, wherein:
the tooth width L1 of the trapezoidal tooth is 0.4mm-1.0 mm; and/or the height h1 of the trapezoidal teeth is 0.2mm-0.5 mm; and/or the crest angle theta 1 of the trapezoidal teeth is 30-70 degrees.
7. A heat exchange tube according to any one of claims 1 to 6, wherein:
the tooth width L2 of the triangular teeth is 0.2mm-0.6 mm; and/or the height h2 of the triangular teeth is 0.1mm-0.4 mm; and/or the crest angle theta 2 of the triangular teeth is 15-45 degrees.
8. A heat exchange tube according to any one of claims 1 to 7, wherein:
the first tooth (2) and/or the second tooth (3) can also be provided as a chevron-shaped tooth (4) having a chevron-shaped longitudinal cross-sectional shape; and/or the heat exchange tube further comprises a third tooth arranged on the inner wall of the tube base body (1), the third tooth is a tooth structure which protrudes inwards from the inner wall of the tube base body (1), and the cross section of the third tooth in a longitudinal section passing through the axis of the tube base body (1) is in a mountain shape, so that a mountain-shaped tooth (4) is formed.
9. A heat exchanger, characterized by: comprising the heat exchange tube of any one of claims 1-8.
10. An air conditioner, characterized in that: comprising the heat exchange tube of any one of claims 1-8 or the heat exchanger of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259868.2A CN112944990A (en) | 2019-12-10 | 2019-12-10 | Heat exchange tube, heat exchanger and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259868.2A CN112944990A (en) | 2019-12-10 | 2019-12-10 | Heat exchange tube, heat exchanger and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN112944990A true CN112944990A (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911259868.2A Pending CN112944990A (en) | 2019-12-10 | 2019-12-10 | Heat exchange tube, heat exchanger and air conditioner |
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| Country | Link |
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| CN (1) | CN112944990A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560626A (en) * | 2022-09-22 | 2023-01-03 | 珠海格力电器股份有限公司 | Heat exchange tube and heat exchanger |
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2019
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| CN1391080A (en) * | 2001-06-12 | 2003-01-15 | 株式会社神户制钢所 | Heat transferring tube for downward flow fluid membrane distiller |
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| CN115560626A (en) * | 2022-09-22 | 2023-01-03 | 珠海格力电器股份有限公司 | Heat exchange tube and heat exchanger |
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