CN112944977A - Falling film heat exchange tube, falling film heat exchanger and air conditioner - Google Patents
Falling film heat exchange tube, falling film heat exchanger and air conditioner Download PDFInfo
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- CN112944977A CN112944977A CN201911258725.XA CN201911258725A CN112944977A CN 112944977 A CN112944977 A CN 112944977A CN 201911258725 A CN201911258725 A CN 201911258725A CN 112944977 A CN112944977 A CN 112944977A
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- tooth
- heat exchange
- falling film
- teeth
- film heat
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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
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- 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
- F28F2215/10—Secondary fins, e.g. projections or recesses on main fins
Abstract
The invention provides a falling film heat exchange tube, a falling film heat exchanger and an air conditioner, wherein the falling film heat exchange tube comprises: the pipe base member (1) and set up first tooth (3) and second tooth (2) on the outer wall of pipe base member (1), first tooth (3) and second tooth (2) all follow the outer wall department of pipe base member (1) is towards keeping away from the direction of outer wall extends, just the extension height of first tooth (3) is higher than the extension height of second tooth (2). According to the invention, the drainage effect on the surface of the heat exchange tube can be enhanced through the first teeth with higher extension height, so that the distribution of fluid on the outer wall of the tube is more uniform, the condition that no fluid exists on the outer wall of the tube to form dry spots is prevented, and the heat exchange efficiency of the heat exchange tube is improved; the turbulence effect on fluid, especially the turbulence effect on fluid in the evaporation cavity between two first teeth can be effectively improved through the lower second teeth in height, and the heat exchange capacity is further enhanced.
Description
Technical Field
The invention belongs to the technical field of heat exchange, and particularly relates to a falling film heat exchange tube, a falling film heat exchanger and an air conditioner.
Background
In commercial air conditioning evaporators, the falling film evaporator has the advantages of high heat exchange performance, small refrigerant filling amount, small heat transfer temperature difference and the like, so that the falling film evaporator is more and more widely applied to commercial air conditioning systems. As an important heat exchange element of the falling film evaporator, the quality of the heat exchange performance of the falling film evaporator pipe determines the quality of the energy efficiency of the falling film evaporator to a great extent. Unlike traditional flooded evaporator tubes, falling film evaporator tubes require a semi-closed evaporation cavity structure to be formed in their structure, and also require a drainage or equalization structure to be machined into the conventional flooded evaporator teeth. For the existing falling film evaporation tube, the structural optimization can play a decisive role in improving the heat exchange performance of the falling film evaporation tube. In the existing market, the types of falling film evaporation tubes of falling film evaporators are few, and a novel falling film evaporation tube is urgently needed to be developed.
Because the surface drainage effect is not obvious when the flooded evaporator tube in the prior art is used as a falling film evaporator tube, and the turbulence effect in the evaporation cavity of a common falling film evaporator tube is not obvious, the invention researches and designs a falling film heat exchange tube, a falling film heat exchanger and an air conditioner.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the surface drainage effect and the turbulence effect of the falling film evaporation tube in the prior art are poor, so that the falling film heat exchange tube, the falling film heat exchanger and the air conditioner are provided.
The invention provides a falling film heat exchange tube, which comprises:
the pipe base body is arranged on a first tooth and a second tooth on the outer wall of the pipe base body, the first tooth and the second tooth both extend from the outer wall of the pipe base body towards the direction far away from the outer wall, and the extending height of the first tooth is higher than that of the second tooth.
Preferably, the first and second electrodes are formed of a metal,
the longitudinal section of the first tooth is T-shaped, and the formed first tooth is T-shaped high tooth; the second tooth is Y-shaped in longitudinal section, and the formed second tooth is Y-shaped low tooth.
Preferably, the first and second electrodes are formed of a metal,
the first teeth having a "T" shaped longitudinal cross-section extend in the circumferential direction of the pipe base; the second teeth whose longitudinal sectional shape is "Y" extend along the circumferential direction of the tube base body.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the tooth height h1 of the T-shaped high tooth is 0.5mm-1.0 mm; and/or the tooth thickness L3 of the T-shaped high tooth is 0.05mm-0.3 mm; and/or the width L2 of the top horizontal tooth part of the T-shaped high tooth is 0.4mm-0.9 mm.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the tooth height h2 of the Y-shaped low tooth is 0.05mm-0.3 mm; and/or the tooth thickness L4 of the Y-shaped low tooth is 0.05mm-0.1 mm; and/or the height h3 of the tooth parts at two sides of the Y-shaped low tooth is 0.05mm-0.1 mm; and/or the included angle theta of the teeth on two sides of the Y-shaped low tooth is 30-120 degrees.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section, the center distance L1 between the T-shaped high teeth and the Y-shaped low teeth is 0.3mm-0.7 mm.
Preferably, the first and second electrodes are formed of a metal,
the first teeth are arranged along the axial direction and/or the circumferential direction of the pipe base body; and/or the second teeth are multiple and are arranged along the axial direction and/or the circumferential direction of the pipe base body.
Preferably, the first and second electrodes are formed of a metal,
the second teeth and the first teeth are distributed alternately in the axial direction of the tube base body.
Preferably, the first and second electrodes are formed of a metal,
and knurling is further processed and arranged on the top surface of the first tooth, and the knurling comprises a groove structure formed in at least one direction.
Preferably, the first and second electrodes are formed of a metal,
the knurls comprise the groove structures which are staggered in a criss-cross mode, and the knurls comprise straight knurls which are arranged along the axial direction and/or the circumferential direction and/or inclined knurls which are arranged along the axial direction and/or the circumferential direction; and/or the depth of the knurls is 0.05mm-0.15 mm.
Preferably, the first and second electrodes are formed of a metal,
a crack cavity is formed between the first tooth and the second tooth and is positioned on the outer wall of the pipe base body; and/or inclined fins (6) protruding towards the adjacent first tooth are arranged on the side wall of the first tooth.
Preferably, the first and second electrodes are formed of a metal,
the section of each split cavity is in at least one of an X shape, a Y shape and an S shape, and/or the split cavities are multiple; and/or the depth of the fissure is 0.05mm-0.2 mm; and/or the longitudinal section of the inclined fin is triangular, and/or the inclined fin is multiple.
The invention also provides a falling film heat exchanger which comprises the falling film heat exchange tube.
The invention also provides an air conditioner which comprises the falling film heat exchange tube or the falling film heat exchanger.
The falling film heat exchange tube, the falling film heat exchanger and the air conditioner provided by the invention have the following beneficial effects:
1. according to the falling film heat exchange tube, the outer wall of the tube substrate of the falling film heat exchange tube is provided with the structural form of the two teeth with different extension heights, so that the drainage effect on the surface of the heat exchange tube can be enhanced through the first tooth with the higher extension height, the fluid is more uniformly distributed on the outer wall of the tube, the condition that no fluid exists on the outer wall of the tube to form dry spots is prevented, and the heat exchange efficiency of the heat exchange tube is improved; the turbulence effect on fluid can be effectively improved through the second teeth with lower heights, particularly the turbulence effect on the fluid in the evaporation cavity between the two first teeth is improved, and the heat exchange capacity is further enhanced;
2. the invention also can enhance the diffusion and distribution effect of the fluid on the high-tooth top part through the surface knurling on the high-tooth top part, further improve the drainage effect, reduce the local thermal resistance and strengthen the vaporization heat exchange; the cracking holes at the root part increase the number of vaporization cores, and enhance the heat exchange efficiency; in the rising process of the gaseous refrigerant, the turbulence degree of the refrigerant in the area is further enhanced due to the obstruction of the inclined fins, and the heat exchange is further enhanced.
Drawings
Fig. 1 is a partial three-dimensional structural view of a falling film heat exchange tube of the present invention;
FIG. 2 is a schematic view of the structure in the direction A in FIG. 1;
figure 3 is a partial three-dimensional top view of a falling film heat exchange tube of the present invention (including knurls and fissures, inclined fins);
fig. 4 is a partially enlarged structural view of a portion B in fig. 3.
The reference numbers in the figures denote:
1. a tube base; 2. a second tooth; 3. a first tooth; 4. knurling; 5. cracking the acupoints; 6. and (4) oblique fins.
Detailed Description
As shown in fig. 1-3, the present invention provides a falling film heat exchange tube comprising:
the pipe base body 1 and set up first tooth 3 and second tooth 2 on the outer wall of pipe base body 1, first tooth 3 and the second tooth 2 all extend from the outer wall of pipe base body 1 towards the direction of keeping away from the outer wall, and the extension height of first tooth 3 is higher than the extension height of second tooth 2.
According to the falling film heat exchange tube, the outer wall of the tube substrate of the falling film heat exchange tube is provided with the structural form of the two teeth with different extension heights, so that the drainage effect on the surface of the heat exchange tube can be enhanced through the first tooth with the higher extension height, the fluid is more uniformly distributed on the outer wall of the tube, the condition that no fluid exists on the outer wall of the tube to form dry spots is prevented, and the heat exchange efficiency of the heat exchange tube is improved; and can effectively promote the vortex effect to the fluid, especially promote to the vortex effect of the fluid in the evaporation chamber between two first teeth through the lower second tooth of height, further strengthen heat transfer ability.
Preferably, the first and second electrodes are formed of a metal,
the longitudinal section of the first tooth 3 is T-shaped, and the formed first tooth 3 is T-shaped high tooth; the second tooth 2 is Y-shaped in longitudinal section, and the formed second tooth 2 is a Y-shaped low tooth. The first tooth and the second tooth are further preferred structural forms of the T-shaped high tooth, the first tooth can form a surface which is firstly contacted with fluid through the upper cross tooth of the T-shaped tooth and then guides the surface into a semi-closed evaporation cavity between the two T-shaped teeth, the drainage effect on the fluid in the evaporation cavity can be effectively improved, the drainage effect is more uniform, the heat exchange efficiency improvement effect is better, the second tooth serving as the Y-shaped low tooth can form a strong turbulence effect on the fluid through two separated branch teeth on the upper part of the Y shape, the turbulence effect is more uniform, and the heat exchange efficiency improvement effect is better.
The invention develops a high-low tooth multi-evaporation-cavity falling film type efficient evaporation tube; the heat exchange performance of the falling film evaporation tube is improved by processing a surface drainage structure (drainage refrigerant) on the tooth top and processing a low-tooth structure on the tooth root; the drainage effect of the surface (especially the outer surface) of the traditional falling film type evaporation tube is improved; the turbulent flow effect in the evaporation cavity of the falling film evaporation tube is enhanced.
Preferably, the first and second electrodes are formed of a metal,
the first teeth 3 having a "T" shaped longitudinal sectional shape extend along the circumferential direction of the pipe base 1; the second teeth 2 having a "Y" shaped longitudinal cross section extend along the circumferential direction of the tube base 1. The first tooth which is in a T shape is a preferable structural form of the first tooth, the first tooth extends along the circumferential direction, the first tooth is in a T shape in an axial section and can enhance the drainage and flow guiding effects in the circumferential direction, and the second tooth in a Y shape is in a preferable structural form, the second tooth extends along the circumferential direction and is in a Y shape in the axial section and can enhance the turbulence effect in the circumferential direction and improve the turbulence effect, wherein the first tooth is in a T shape in the axial section, and the first tooth is in a T shape in the view of fig. 1.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the tooth height h1 of the T-shaped high tooth is 0.5mm-1.0mm, preferably 0.6mm, and/or the tooth thickness L3 of the T-shaped high tooth is 0.05mm-0.3mm, preferably 0.2mm, and/or the width L2 of the top transverse tooth part of the T-shaped high tooth is 0.4mm-0.9mm, preferably 0.6 mm. The T-shaped high teeth are in a further optimized size structure form, so that the drainage effect on fluid can be further effectively improved, the drainage effect is more uniform, and the heat exchange efficiency is further improved.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the tooth height h2 of the "Y" shaped low teeth is 0.05mm to 0.3mm, preferably 0.2mm, and/or the tooth thickness L4 of the "Y" shaped low teeth is 0.05mm to 0.1mm, preferably 0.07 mm. And/or the height h3 of the tooth parts on both sides of the "Y" shaped low tooth is 0.05mm-0.1mm, preferably 0.08mm, and/or the angle theta of the teeth on both sides of the "Y" shaped low tooth is 30 deg. -120 deg., preferably 90 deg.. The Y-shaped high teeth are in a further preferable size structure form, so that the turbulent flow effect on fluid can be further effectively improved, the turbulent flow effect is stronger, and the heat exchange efficiency is further improved.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the center distance L1 between the T-shaped high teeth and the Y-shaped low teeth is 0.3mm-0.7mm, preferably 0.4 mm. The optimal size relationship of the center distance between the T-shaped high teeth and the Y-shaped low teeth of the invention can ensure that the space size of the evaporation cavity meets the requirement and the distance between the high teeth and the low teeth is not too large or too small, so that the fluid can be optimally disturbed when flowing into the evaporation cavity, and the heat exchange effect is improved to the maximum extent.
Preferably, the first and second electrodes are formed of a metal,
the number of the first teeth 3 is multiple, and the multiple first teeth 3 are arranged along the axial direction and/or the circumferential direction of the pipe base body 1; and/or the second teeth 2 are multiple, and the multiple second teeth 2 are arranged along the axial direction and/or the circumferential direction of the pipe base body 1. The first teeth and the second teeth are arranged in the preferred arrangement mode, and the plurality of teeth are arranged along the axial direction and/or the circumferential direction, so that the high teeth can achieve the drainage effect on the fluid in the axial direction and the circumferential direction, the drainage uniformity is improved, meanwhile, the low teeth can achieve the turbulence effect on the fluid in the axial direction and the circumferential direction, the turbulence effect is enhanced, and the heat exchange efficiency is enhanced.
Preferably, the first and second electrodes are formed of a metal,
in the axial direction of the pipe base body 1, the second teeth 2 and the first teeth 3 are distributed at intervals in a staggered manner. The first teeth and the second teeth are arranged in a staggered mode at intervals, so that the low teeth of the second teeth are positioned in the evaporation cavity between the two high teeth, the fluid in the evaporation cavity is strongly disturbed, and the heat exchange strength is improved.
Preferably, the first and second electrodes are formed of a metal,
and knurling 4 is further processed and arranged on the top surface of the first tooth 3, and the knurling 4 comprises a groove structure formed along at least one direction. Through the surface knurling on the top of the high teeth, the diffusion distribution effect of the fluid on the high teeth can be enhanced, the drainage effect is further improved, the local thermal resistance is reduced, and the vaporization heat exchange is enhanced.
Preferably, the first and second electrodes are formed of a metal,
the knurls 4 comprise the groove structures which are staggered in a criss-cross mode, and the knurls 4 comprise straight knurls which are arranged along the axial direction and/or the circumferential direction and/or inclined knurls which are arranged along the axial direction and/or the circumferential direction; and/or the depth of the knurls 4 is 0.05mm-0.15 mm. When the falling film type heat exchange tube is in a heat exchange state, the liquid refrigerant flows to the heat exchange surface in a columnar shape, and the criss-cross structure generated by the surface knurling (the liquid refrigerant flows) is favorable for the liquid refrigerant to be diffused and distributed in the axial direction and the circumferential direction of the tooth top of the liquid refrigerant and spread a thin liquid film, so that the local thermal resistance is reduced and the vaporization heat exchange is enhanced; fig. 3 shows straight knurls in the axial and circumferential directions, but in addition to the structure shown in the previous figures, the knurls can also be in the form of oblique knurls in the axial and circumferential directions (not shown in fig. 3), and the knurl depth can be 0.05mm-0.15 mm.
Preferably, the first and second electrodes are formed of a metal,
a crack 5 (i.e., a groove) is also formed between the first tooth 3 and the second tooth 2 at a position on the outer wall of the pipe base 1; and/or inclined fins 6 protruding towards the adjacent first teeth 3 are arranged on the side walls of the first teeth 3. The cracking holes at the root part increase the number of vaporization cores, and enhance the heat exchange efficiency; in the rising process of the gaseous refrigerant, the turbulence degree of the refrigerant in the area is further enhanced due to the obstruction of the inclined fins, and the heat exchange is further enhanced.
Preferably, the first and second electrodes are formed of a metal,
the section of each split cavity 5 is in at least one of an X shape, a Y shape and an S shape, and/or a plurality of split cavities 5 are provided; and/or the depth of the cracking holes 5 is 0.05mm-0.2 mm; and/or the longitudinal section of the inclined fin 6 is triangular, and/or the inclined fin 6 is multiple. The liquid refrigerant flows into the evaporation cavity, the low teeth disperse the liquid refrigerant into the small evaporation cavities on the two sides of the evaporation cavity, and the cracking holes (additionally arranged structures) on the root part increase the number of vaporization cores and enhance the heat exchange; the turbulence degree of the refrigerant in the area is further enhanced due to the obstruction of the small inclined fins and the low-tooth inclined fins in the ascending process of the gaseous refrigerant, and the heat exchange is further enhanced.
The invention also provides a falling film heat exchanger which comprises the falling film heat exchange tube. According to the falling film heat exchange tube, the outer wall of the tube substrate of the falling film heat exchange tube is provided with the structural form of the two teeth with different extension heights, so that the drainage effect on the surface of the heat exchange tube can be enhanced through the first tooth with the higher extension height, the fluid is more uniformly distributed on the outer wall of the tube, the condition that no fluid exists on the outer wall of the tube to form dry spots is prevented, and the heat exchange efficiency of the heat exchange tube is improved; the turbulence effect on fluid can be effectively improved through the second teeth with lower heights, particularly the turbulence effect on the fluid in the evaporation cavity between the two first teeth is improved, and the heat exchange capacity is further enhanced;
the invention also provides an air conditioner which comprises the falling film heat exchange tube or the falling film heat exchanger. The invention develops a high-low tooth multi-evaporation-cavity falling film type efficient evaporation tube; the heat exchange performance of the falling film evaporation tube is improved by processing a surface drainage structure (drainage refrigerant) on the tooth top and processing a low-tooth structure on the tooth root; the drainage effect of the surface (especially the outer surface) of the traditional falling film type evaporation tube is improved; the turbulent flow effect in the evaporation cavity of the falling film evaporation tube is enhanced.
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 (14)
1. A falling film heat exchange tube is characterized in that: the method comprises the following steps:
the pipe base member (1) and set up first tooth (3) and second tooth (2) on the outer wall of pipe base member (1), first tooth (3) and second tooth (2) all follow the outer wall department of pipe base member (1) is towards keeping away from the direction of outer wall extends, just the extension height of first tooth (3) is higher than the extension height of second tooth (2).
2. The falling film heat exchange tube of claim 1, wherein:
the longitudinal section of the first tooth (3) is T-shaped, and the formed first tooth (3) is T-shaped high tooth; the longitudinal section of the second tooth (2) is Y-shaped, and the formed second tooth (2) is Y-shaped low tooth.
3. The falling film heat exchange tube of claim 2, wherein:
the first teeth (3) having a T-shaped longitudinal cross-sectional shape extend in the circumferential direction of the pipe base body (1); the second teeth (2) having a Y-shaped longitudinal sectional shape extend in the circumferential direction of the tube base body (1).
4. The falling film heat exchange tube of claim 2, wherein:
in longitudinal section: the tooth height h1 of the T-shaped high tooth is 0.5mm-1.0 mm; and/or the tooth thickness L3 of the T-shaped high tooth is 0.05mm-0.3 mm; and/or the width L2 of the top horizontal tooth part of the T-shaped high tooth is 0.4mm-0.9 mm.
5. The falling film heat exchange tube of claim 2, wherein:
in longitudinal section: the tooth height h2 of the Y-shaped low tooth is 0.05mm-0.3 mm; and/or the tooth thickness L4 of the Y-shaped low tooth is 0.05mm-0.1 mm; and/or the height h3 of the tooth parts at two sides of the Y-shaped low tooth is 0.05mm-0.1 mm; and/or the included angle theta of the teeth on two sides of the Y-shaped low tooth is 30-120 degrees.
6. The falling film heat exchange tube of claim 2, wherein:
in longitudinal section: the center distance L1 between the T-shaped high teeth and the Y-shaped low teeth is 0.3mm-0.7 mm.
7. The falling film heat exchange tube of any one of claims 1 to 6, wherein:
the number of the first teeth (3) is multiple, and the multiple first teeth (3) are arranged along the axial direction and/or the circumferential direction of the pipe base body (1); and/or the second teeth (2) are multiple, and the multiple second teeth (2) are arranged along the axial direction and/or the circumferential direction of the pipe base body (1).
8. The falling film heat exchange tube of claim 7, wherein:
in the axial direction of the pipe base body (1), the second teeth (2) and the first teeth (3) are distributed in a staggered manner.
9. A falling film heat exchange tube according to any one of claims 1 to 8, wherein:
and knurling (4) is further processed and arranged on the top surface of the first tooth (3), and the knurling (4) comprises a groove structure formed along at least one direction.
10. The falling film heat exchange tube of claim 9, wherein:
the knurls (4) comprise criss-cross groove structures, and the knurls (4) comprise straight knurls which are arranged along the axial direction and/or the circumferential direction and/or inclined knurls which are arranged along the axial direction and/or the circumferential direction; and/or the depth of the knurls (4) is 0.05mm-0.15 mm.
11. A falling film heat exchange tube according to any one of claims 1 to 10, wherein:
a crack cavity (5) is formed between the first tooth (3) and the second tooth (2) and is positioned on the outer wall of the pipe base body (1); and/or inclined fins (6) protruding towards the adjacent first teeth (3) are arranged on the side walls of the first teeth (3).
12. The falling film heat exchange tube of claim 11, wherein:
the cross-sectional shape of the split cavity (5) is at least one of an X shape, a Y shape and an S shape, and/or the split cavity (5) is multiple; and/or the depth of the fissure cave (5) is 0.05mm-0.2 mm; and/or the longitudinal section of the inclined fin (6) is triangular, and/or the inclined fin (6) is multiple.
13. A falling film heat exchanger is characterized in that: comprising the falling film heat exchange tube of any one of claims 1 to 12.
14. An air conditioner, characterized in that: comprising a falling film heat exchange tube according to any one of claims 1 to 12 or a falling film heat exchanger according to claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258725.XA CN112944977A (en) | 2019-12-10 | 2019-12-10 | Falling film heat exchange tube, falling film heat exchanger and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911258725.XA CN112944977A (en) | 2019-12-10 | 2019-12-10 | Falling film heat exchange tube, falling film heat exchanger and air conditioner |
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| CN112944977A true CN112944977A (en) | 2021-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021228276A1 (en) * | 2020-08-03 | 2021-11-18 | 青岛海尔空调电子有限公司 | Heat exchange tube of falling film type evaporator |
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- 2019-12-10 CN CN201911258725.XA patent/CN112944977A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021228276A1 (en) * | 2020-08-03 | 2021-11-18 | 青岛海尔空调电子有限公司 | Heat exchange tube of falling film type evaporator |
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