CN111156745A - Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator - Google Patents
Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator Download PDFInfo
- Publication number
- CN111156745A CN111156745A CN202010105879.1A CN202010105879A CN111156745A CN 111156745 A CN111156745 A CN 111156745A CN 202010105879 A CN202010105879 A CN 202010105879A CN 111156745 A CN111156745 A CN 111156745A
- Authority
- CN
- China
- Prior art keywords
- pipe
- section
- rack
- racks
- pipes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims 2
- 238000005728 strengthening Methods 0.000 claims 2
- 239000003507 refrigerant Substances 0.000 abstract description 39
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a variable-pipe-diameter compound-tooth-shaped internal thread reinforced pipe evaporator which is characterized by comprising more than two first-section pipes, more than two second-section pipes, more than three connecting elbows and more than two fins; more than three first racks are uniformly arranged in the axial direction of the inner wall of the first section of pipe, and the first racks are spirally distributed; the length of the second section of pipe is the same as that of the first section of pipe, and the inner diameters of the second section of pipe and the first section of pipe are not equal; more than three second racks are uniformly arranged in the axial direction of the inner wall of the second section of pipe, and the second racks are spirally distributed; two adjacent first-section pipes are communicated in series through connecting elbows to form a first-section pipe group, two adjacent second-section pipes are communicated in series through connecting elbows to form a second-section pipe group, and the first-section pipe group and the second-section pipe group are communicated in series through connecting elbows; each fin is sleeved on all the first section of pipe and the second section of pipe. The heat exchanger has the advantages of improving the whole heat exchange effect, reducing consumed materials, reducing the filling amount of the refrigerant and the like.
Description
Technical Field
The invention relates to a refrigeration system evaporator technology, in particular to a finned tube type internal threaded tube enhanced heat exchange evaporator technology.
Background
Refrigeration equipment faces two major problems, namely how to improve the performance of a refrigeration system and how to adopt an environment-friendly refrigerant. The method for improving the heat exchange effect of the evaporator by adopting the enhanced heat exchange technology is one of important technical means for improving the performance of the refrigeration system, and the method for reducing the refrigerant charge of the refrigeration system by reducing the pipe diameter of the evaporator is also one of important technical means for solving the application of the environment-friendly refrigerant. In the field of refrigeration air conditioners, an internal thread reinforced tube technology is a common technology in evaporators at present, but an internal thread tube with single internal thread tooth form and a larger tube diameter is adopted, and by adopting the technology, the heat exchange area is larger, the flow resistance of a refrigerant is smaller, the integral heat exchange effect of the evaporator is favorably improved, but the material consumption of a heat exchange tube is larger, and the refrigerant filling amount is also larger.
The heat exchange process of the refrigerant in the evaporator is a heat exchange process from low dryness (close to saturated liquid) to superheated steam, the liquid proportion in the refrigerant at the front section of the evaporator, namely a low dryness section, is larger, the flow resistance of the refrigerant is relatively smaller, the main measures of adopting the internal thread reinforced pipe to strengthen the heat exchange are to increase the rotation speed and the section flow rate of the refrigerant to form a better Gregoring effect, the main measures of adopting the internal thread reinforced pipe to strengthen the heat exchange are to increase the heat exchange area and reduce the flow resistance of the refrigerant at the rear section of the evaporator, namely a high dryness section, are larger. Obviously, the technical contradiction can be solved more effectively by adopting the technical scheme of adopting different heat exchange enhancement modes at different refrigerant dryness stages in the evaporator.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a variable-diameter composite tooth-shaped internal thread reinforced tube evaporator.
In order to achieve the above object, one technical solution of the present invention is a variable-diameter evaporator with composite tooth-shaped internal-thread reinforced pipes, comprising:
two or more first stage pipes; more than three first racks are uniformly arranged in the axial direction of the inner wall of the first section of pipe, and the first racks are spirally distributed;
two or more second stage pipes; the length of the second section of pipe is the same as that of the first section of pipe, the inner diameters of the second section of pipe and the first section of pipe are not equal, and the ratio range of the inner diameter of the second section of pipe to the inner diameter of the first section of pipe is 1.1-2; more than three second racks are uniformly arranged in the axial direction of the inner wall of the second section of pipe, and the two racks are spirally distributed; the ratio range of the first number of the teeth of the second section of pipe to the second number of the teeth of the first section of pipe is 1.2-2, and the ratio range of the second rack helical angle of the second section of pipe to the first rack helical angle of the first section of pipe is 0.5-0.9;
more than three connecting elbows; two adjacent first-section pipes are communicated in series through connecting elbows to form a first-section pipe group, two adjacent second-section pipes are communicated in series through connecting elbows to form a second-section pipe group, and the first-section pipe group and the second-section pipe group are communicated in series through connecting elbows; and
more than two fins; each fin is sleeved on all the first section of pipe and the second section of pipe.
In the technical scheme, the number of the first-stage tubes accounts for 1/5-4/5 of the total number, and the number of the second-stage tubes accounts for 1/5-4/5 of the total number.
In the technical scheme, the outer diameter of the first section of pipe is 6.35mm, the thickness of the pipe wall is 0.25mm, the height of a first rack of the first section of pipe is 0.2mm, the number of the first racks is 45, the helix angle of the first rack is 20 degrees, and the addendum angle is 25 degrees; the outer diameter of the second section of pipe is 7mm, the pipe wall thickness is 0.25mm, the tooth height of a second rack of the second section of pipe is 0.2mm, the number of the second racks is 60, the helical angle of the second rack is 15 degrees, and the tooth crest angle is 25 degrees.
In order to achieve the above object, another technical solution of the present invention is a variable-diameter composite toothed internal thread reinforced tube evaporator, comprising:
two or more first stage pipes; more than three first racks are uniformly arranged in the axial direction of the inner wall of the first section of pipe, and the first racks are spirally distributed;
two or more second stage pipes; the length of the second section of pipe is the same as that of the first section of pipe, more than three second racks are uniformly arranged in the axial direction of the inner wall of the second section of pipe, and the second racks are spirally distributed; the ratio range of the second number of the second section of the pipe to the first number of the first section of the pipe is 1.1-1.5, and the ratio range of the second rack helical angle of the second section of the pipe to the first rack helical angle of the first section of the pipe is 0.5-0.9;
two or more third stage pipes; the length of the third section of pipe is the same as that of the second section of pipe, more than three third racks are uniformly arranged in the axial direction of the inner wall of the third section of pipe, and the third racks are spirally distributed; the ratio range of the third number of the teeth of the third section of the pipe to the second number of the teeth of the second section of the pipe is 1-1.5, and the ratio range of the third rack helical angle of the third section of the pipe to the second rack helical angle of the second section of the pipe is 0.5-0.9;
more than five connecting elbows; two adjacent first-section pipes are communicated in series through connecting elbows to form a first-section pipe group, two adjacent second-section pipes are communicated in series through connecting elbows to form a second-section pipe group, two adjacent third-section pipes are communicated in series through connecting elbows to form a third-section pipe group, and the first-section pipe group, the second-section pipe group and the third-section pipe group are communicated in series sequentially through connecting elbows; and
more than two fins; each fin is sleeved on all the first section of pipe, the second section of pipe and the third section of pipe;
the first section of pipe, the second section of pipe and the third section of pipe have two or three inner diameters with different sizes, wherein the ratio range of the inner diameter of the second section of pipe to the inner diameter of the first section of pipe is 1-1.5, and the ratio range of the inner diameter of the third section of pipe to the inner diameter of the second section of pipe is 1-1.5; specifically, the inner diameter of the second section of pipe is the same as the inner diameter of the first section of pipe or the inner diameter of the third section of pipe is the same as the inner diameter of the second section of pipe, but the inner diameters of the first, second and third sections of pipe cannot be the same at the same time.
In the technical scheme, the number of the first section of pipe accounts for 1/10-2/3 of the total number of all pipe sections; the number of the second segment of pipe is 1/10-2/3 of the total number of all pipe segments; the number of the third segment of tubes accounts for 1/10-2/3 of the total number of all tube segments.
In the technical scheme, the outer diameter of the first section of pipe is 6.35mm, the thickness of the pipe wall is 0.25mm, the height of a first rack of the first section of pipe is 0.2mm, the number of the first racks is 45, the helical angle of the racks is 25 degrees, and the addendum angle is 25 degrees; the outer diameter of the second section of pipe is 7mm, the pipe wall thickness is 0.25mm, the tooth height of a second rack of the second section of pipe is 0.2mm, the number of the second racks is 60, the helical angle of the second rack is 20 degrees, and the tooth crest angle is 25 degrees; the outer diameter of the third section of pipe is 7mm, the pipe wall thickness is 0.25mm, the height of a third rack of the third section of pipe is 0.2mm, the number of the third racks is 60, the helical angle of the third rack is 15 degrees, and the addendum angle is 25 degrees.
Compared with the prior art, the invention has the advantages that: and at different dryness stages of the refrigerant flowing through the heat exchanger, internal thread reinforced pipes with different pipe diameters and different tooth shapes are respectively adopted. In the stage of low dryness of the refrigerant, the proportion of the refrigerant liquid in the heat exchange tube is large, the flow velocity in the refrigerant tube is relatively small, the refrigerant flow velocity is improved by increasing the helix angle of the internal thread rack and reducing the sectional area of the heat exchange tube, the tooth bottom width is increased by reducing the number of the internal thread racks so as to reduce the heat transfer resistance of the refrigerant liquid, and meanwhile, the material consumption of the heat exchange tube is reduced and the refrigerant charging amount is reduced. At the stage of high dryness of the refrigerant, the proportion of the refrigerant gas in the heat exchange tube is large, the flow velocity in the refrigerant tube is large, and the heat exchange area is increased and the flow resistance is reduced by increasing the sectional area of the heat exchange tube and the area of the internal thread rack. In a word, through the matching of the pipe diameter and the tooth shape of the internal thread pipe and the dryness change of the refrigerant in the heat exchange process of the whole evaporator, the whole evaporator achieves the optimal heat exchange effect, and the effects of reducing the material consumption of the heat exchange pipe and reducing the filling amount of the refrigerant are achieved.
Drawings
FIG. 1 is a schematic view of an assembly structure according to a first embodiment of the present invention;
FIG. 2 is an axial cross-sectional view of a first segment of pipe according to a first embodiment of the present invention;
FIG. 3 is an enlarged partial left view of FIG. 2;
FIG. 4 is an axial cross-sectional view of a second length of pipe according to a first embodiment of the present invention;
FIG. 5 is an enlarged partial left view of FIG. 4;
FIG. 6 is a schematic view of an assembly structure of the second embodiment of the present invention;
FIG. 7 is an axial cross-sectional view of a first segment of pipe according to a second embodiment of the present invention;
FIG. 8 is an enlarged partial left view of FIG. 7;
FIG. 9 is an axial cross-sectional view of a second length of pipe according to a second embodiment of the present invention;
FIG. 10 is an enlarged partial left view of FIG. 9;
FIG. 11 is an axial cross-sectional view of a third length of pipe according to a second embodiment of the present invention;
fig. 12 is a partial left-side enlarged view of fig. 11.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example one
As shown in fig. 1 to 5, the evaporator is a variable-diameter composite tooth-shaped internal thread reinforced tube evaporator, which comprises four first-section tubes 1, four second-section tubes 4, seven connecting elbows 3 and seventeen fins 2; the lengths of the first section of pipe 1 and the second section of pipe 4 are equal, the number of the first section of pipe 1 and the number of the second section of pipe 4 can be selected according to the implementation situation, but the number of the first section of pipe 1 accounts for 1/5-4/5 of the total number, and the number of the second section of pipe 4 accounts for 1/5-4/5 of the total number; the inner diameters of the first section of pipe 1 and the second section of pipe 4 are not equal, the ratio of the inner diameter of the second section of pipe 4 to the inner diameter of the first section of pipe 1 is 1.1, the ratio of the inner diameter of the second section of pipe 4 to the inner diameter of the first section of pipe 1 can be selected according to actual conditions, and the ratio range is required to be 1.1-2.
45 first racks are uniformly arranged on the inner wall of the first section of pipe 1 in the axial direction, and the first racks are spirally distributed; 60 second racks are uniformly arranged on the inner wall of the second section of pipe 4 in the axial direction and are spirally distributed; the ratio of the second number of teeth of the second section of pipe 4 to the first number of teeth of the first section of pipe 1 is 1.33, or the ratio of the second number of teeth to the first number of teeth can be selected according to the actual situation, but the ratio of the second number of teeth to the first number of teeth is required to be in the range of 1.2-2; the ratio of the second rack helix angle of the second section pipe 4 to the first rack helix angle of the first section pipe 1 is 0.75, and the ratio of the second rack helix angle to the first rack helix angle can also be selected according to actual conditions, but the ratio of the second rack helix angle to the first rack helix angle should be in the range of 0.5-0.9.
The four first-section pipes 1 are communicated in series through three connecting elbows 3 to form a first-section pipe group, the four second-section pipes 4 are communicated in series through three connecting elbows 3 to form a second-section pipe group, the first-section pipe group and the second-section pipe group are communicated in series through one connecting elbow 3, and the number of the connecting elbows 3 is adapted to the number of the first-section pipes 1 and the second-section pipes 4; seventeen fins 2 are all sleeved on all the first section of tube 1 and the second section of tube, so that the evaporator is formed, and the number of the fins 2 can be determined according to actual conditions, but more than two fins are needed.
In operation, refrigerant enters from the inlet of the first section of the first tube 1 at the initial end and flows out from the outlet of the second section of the second tube 4 at the tail end; the refrigerant is evaporated in the first-stage pipe 1, the dryness of the refrigerant is increased along the flowing direction of the refrigerant, and then the refrigerant enters the second-stage pipe 4 to be continuously evaporated and is completely changed into refrigerant gas.
In this embodiment, the outer diameter of the first section of pipe 1 is 6.35mm, the pipe wall thickness is 0.25mm, the height of the first rack of the first section of pipe 1 is 0.2mm, the number of the first racks is 45, the helix angle of the first rack is 20 °, and the tooth crest angle is 25 °; the outer diameter of the second section of pipe 4 is 7mm, the pipe wall thickness is 0.25mm, the tooth height of a second rack of the second section of pipe 4 is 0.2mm, the number of the second racks is 60, the helical angle of the second rack is 15 degrees, and the tooth crest angle is 25 degrees.
Example two
As shown in fig. 6 to 12, the evaporator is a variable-diameter composite tooth-shaped internal thread strengthened tube evaporator, which comprises three first-stage tubes 1, three second-stage tubes 4, two third-stage tubes 5, seven connecting elbows 3 and seventeen fins 2; the length of each of the first section of pipe 1, the second section of pipe 4 and the third section of pipe 5 is equal; the number of the first section of pipe 1, the second section of pipe 4 and the third section of pipe 5 can be selected according to actual conditions, but the number of the first section of pipe 1 needs to be 1/10-2/3 of the total number of the pipes, the number of the second section of pipe 4 needs to be 1/10-2/3 of the total number of the pipes, and the number of the third section of pipe 5 needs to be 1/10-2/3 of the total number of the pipes; the first section of pipe 1, the second section of pipe 4 and the third section of pipe 5 have two or three inner diameters with different sizes, the ratio of the inner diameter of the second section of pipe 4 to the inner diameter of the first section of pipe 1 is 1.1, the ratio of the inner diameter of the second section of pipe 4 to the inner diameter of the first section of pipe 1 can be selected according to actual conditions, but the ratio range is required to be 1-1.5; the ratio of the inner diameter of the third section of pipe 5 to the inner diameter of the second section of pipe 4 is 1, and the ratio of the inner diameter of the third section of pipe 5 to the inner diameter of the second section of pipe 4 can be selected according to actual conditions, but the ratio range needs to be 1-1.5. Specifically, the inner diameter of the second section of pipe 4 is the same as the inner diameter of the first section of pipe 1 or the inner diameter of the third section of pipe 5 is the same as the inner diameter of the second section of pipe 4, but the inner diameters of the first section of pipe 1, the second section of pipe 4 and the third section of pipe 5 cannot be the same at the same time.
45 first racks are uniformly arranged on the inner wall of the first section of pipe 1 in the axial direction, and the first racks are spirally distributed; 60 second racks are uniformly arranged on the inner wall of the second section of pipe 4 in the axial direction and are spirally distributed; 60 third racks are uniformly arranged on the inner wall of the third section of pipe 5 in the axial direction, and the third racks are spirally distributed; the ratio of the second number of teeth of the second section of pipe 4 to the first number of teeth of the first section of pipe 1 is 1.33, and the ratio of the second number of teeth of the second section of pipe 4 to the first number of teeth of the first section of pipe 1 can be selected according to actual conditions, but the ratio range is required to be 1.1-1.5; the ratio of the third number of teeth of the third section of pipe 5 to the second number of teeth of the second section of pipe 4 is 1, and the ratio of the third number of teeth of the third section of pipe 5 to the second number of teeth of the second section of pipe 4 can be selected according to actual conditions, but the ratio range needs to be 1-1.5; the ratio of the helical angle of the second rack of the second section of pipe 4 to the helical angle of the first rack of the first section of pipe 1 is 0.8, and the ratio of the helical angle of the second rack of the second section of pipe 4 to the helical angle of the first rack of the first section of pipe 1 can be selected according to actual conditions, but the range of the ratio is required to be 0.5-0.9; the ratio of the helical angle of the third rack of the third section of pipe 5 to the helical angle of the second rack of the second section of pipe 4 is 0.75, and the ratio of the helical angle of the third rack of the third section of pipe 5 to the helical angle of the second rack of the second section of pipe 4 can be selected according to actual conditions, but the ratio range needs to be 0.5-0.9.
The three first-section pipes 1 are communicated in series through two connecting elbows 3 to form a first-section pipe group, the three second-section pipes 4 are communicated in series through two connecting elbows 3 to form a second-section pipe group, the two third-section pipes 5 are communicated in series through one connecting elbow 3 to form a third-section pipe group, the first-section pipe group, the second-section pipe group and the third-section pipe group are communicated in series sequentially through the two connecting elbows 3, and the number of the connecting elbows 3 is adapted to the number of the first-section pipes 1, the second-section pipes 4 and the third-section pipes 5; seventeen fins 2 are all sleeved on all the first section of tube 1, the second section of tube 4 and the third section of tube 5, so that the evaporator is formed, and the number of the fins 2 can be determined according to actual conditions, but more than two fins are needed.
In operation, refrigerant enters from the inlet of the first section of the first tube 1 at the initial end and flows out from the outlet of the third section of the last tube 5; the refrigerant is evaporated in the first section of pipe 1, the dryness of the refrigerant is increased along the flowing direction of the refrigerant, then the refrigerant enters the second section of pipe 4 to be continuously evaporated, the dryness of the refrigerant is continuously increased along the flowing direction of the refrigerant, and finally the refrigerant enters the third section of pipe 5 to be continuously evaporated and completely changed into refrigerant gas.
In this embodiment, the outer diameter of the first section of pipe 1 is 6.35mm, the pipe wall thickness is 0.25mm, the height of the first rack of the first section of pipe 1 is 0.2mm, the number of the first racks is 45, the helix angle of the first rack is 25 °, and the addendum angle is 25 °; the outer diameter of the second section of pipe 4 is 7mm, the pipe wall thickness is 0.25mm, the tooth height of a second rack of the second section of pipe 2 is 0.2mm, the number of the second racks is 60, the helical angle of the second rack is 20 degrees, and the tooth crest angle is 25 degrees; the outer diameter of the third section of pipe 5 is 7mm, the pipe wall thickness is 0.25mm, the third rack height of the third section of pipe 5 is 0.2mm, the number of the third racks is 60, the helix angle of the third racks is 15 degrees, and the addendum angle is 25 degrees.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a become compound profile of tooth internal thread strengthening tube evaporimeter of pipe diameter which characterized in that includes:
two or more first-stage pipes (1); more than three first racks are uniformly arranged in the axial direction of the inner wall of the first section of pipe (1), and the first racks are spirally distributed;
two or more second-stage pipes (4); the length of the second section of pipe (4) is the same as that of the first section of pipe (1), the inner diameters of the second section of pipe (4) and the first section of pipe (1) are not equal, and the ratio range of the inner diameter of the second section of pipe (4) to the inner diameter of the first section of pipe (1) is 1.1-2; more than three second racks are uniformly arranged in the axial direction of the inner wall of the second section of pipe (4), and the second racks are spirally distributed; the ratio range of the first number of the teeth of the second section of pipe (4) to the second number of the teeth of the first section of pipe (1) is 1.2-2, and the ratio range of the second rack helical angle of the second section of pipe (4) to the first rack helical angle of the first section of pipe (1) is 0.5-0.9;
more than three connecting elbows (3); two adjacent first sections of pipes (1) are communicated in series through connecting elbows (3) to form a first section of pipe group, two adjacent second sections of pipes (4) are communicated in series through connecting elbows (3) to form a second section of pipe group, and the first section of pipe group and the second section of pipe group are communicated in series through connecting elbows (3); and
two or more fins (2); each fin (2) is sleeved on all the first section of tube (1) and the second section of tube (4).
2. The evaporator of the variable-pipe-diameter compound-tooth-shaped internal-thread reinforced pipe as claimed in claim 1, wherein the number of the first section of pipe (1) is 1/5-4/5 of the total number, and the number of the second section of pipe (4) is 1/5-4/5 of the total number.
3. The evaporator of the variable-pipe-diameter composite toothed internal thread reinforced pipe as claimed in claim 1 or 2, wherein the outer diameter of the first section of pipe (1) is 6.35mm, the pipe wall thickness is 0.25mm, the first rack height of the first section of pipe (1) is 0.2mm, the first number of the racks is 45, the helix angle of the first rack is 20 °, and the tooth crest angle is 25 °; the outer diameter of the second section of pipe (4) is 7mm, the pipe wall thickness is 0.25mm, the tooth height of a second rack of the second section of pipe (4) is 0.2mm, the number of the second racks is 60, the spiral angle of the second rack is 15 degrees, and the tooth crest angle is 25 degrees.
4. The utility model provides a become compound profile of tooth internal thread strengthening tube evaporimeter of pipe diameter which characterized in that includes:
two or more first-stage pipes (1); more than three first racks are uniformly arranged in the axial direction of the inner wall of the first section of pipe (1), and the first racks are spirally distributed;
two or more second-stage pipes (4); the length of the second section of pipe (4) is the same as that of the first section of pipe (1), more than three second racks are uniformly arranged in the axial direction of the inner wall of the second section of pipe (4), and the second racks are spirally distributed; the ratio range of the second number of the second section of the pipe (4) to the first number of the first section of the pipe (1) is 1.1-1.5, and the ratio range of the second rack helical angle of the second section of the pipe (4) to the first rack helical angle of the first section of the pipe (1) is 0.5-0.9;
two or more third-stage pipes (5); the length of the third section of pipe (5) is the same as that of the second section of pipe (4), more than three third racks are uniformly arranged in the axial direction of the inner wall of the third section of pipe (5), and the third racks are spirally distributed; the ratio of the third number of teeth of the third section of pipe (5) to the second number of teeth of the second section of pipe (4) ranges from 1 to 1.5, and the ratio of the third rack helical angle of the third section of pipe (5) to the second rack helical angle of the second section of pipe (4) ranges from 0.5 to 0.9;
more than five connecting elbows (3); two adjacent first sections of pipes (1) are communicated in series through connecting elbows (3) to form a first section of pipe group, two adjacent second sections of pipes (4) are communicated in series through connecting elbows (3) to form a second section of pipe group, two adjacent third sections of pipes (5) are communicated in series through connecting elbows (3) to form a third section of pipe group, and the first section of pipe group, the second section of pipe group and the third section of pipe group are sequentially communicated in series through connecting elbows (3); and
two or more fins (2); each fin (2) is sleeved on all the first section of tube (1), the second section of tube (4) and the third section of tube (5);
the first section of pipe (1), the second section of pipe (4) and the third section of pipe (5) are two or three inner diameters with different sizes, wherein the ratio range of the inner diameter of the second section of pipe (4) to the inner diameter of the first section of pipe (1) is 1-1.5, and the ratio range of the inner diameter of the third section of pipe (5) to the inner diameter of the second section of pipe (4) is 1-1.5; particularly, the inner diameter of the second section of pipe (4) is the same as that of the first section of pipe (1) or the inner diameter of the third section of pipe (5) is the same as that of the second section of pipe (4), but the inner diameters of the first section of pipe (1), the second section of pipe (4) and the third section of pipe (5) cannot be the same at the same time.
5. The evaporator of the variable-pipe-diameter composite toothed internal thread reinforced pipe as claimed in claim 5, wherein the number of the first section of the pipe (1) is 1/10-2/3 of the total number of all the pipe sections; the number of the second section of pipe (4) is 1/10-2/3 of the total number of all the pipe sections; the number of the third segment of the tubes (5) is 1/10-2/3 of the total number of all the tube segments.
6. The evaporator of the variable-pipe-diameter composite toothed internal thread reinforced pipe as claimed in claim 4 or 5, wherein the outer diameter of the first section of pipe (1) is 6.35mm, the pipe wall thickness is 0.25mm, the first rack height of the first section of pipe (1) is 0.2mm, the first number of the racks is 45, the helical angle of the first rack is 25 °, and the tooth crest angle is 25 °; the outer diameter of the second section of pipe (4) is 7mm, the pipe wall thickness is 0.25mm, the tooth height of a second rack of the second section of pipe (4) is 0.2mm, the number of the second racks is 60, the helical angle of the second rack is 20 degrees, and the tooth crest angle is 25 degrees; the outer diameter of the third section of pipe (5) is 7mm, the pipe wall thickness is 0.25mm, the third rack height of the third section of pipe (5) is 0.2mm, the third rack number is 60, the helix angle of the third rack is 15 degrees, and the tooth crest angle is 25 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105879.1A CN111156745A (en) | 2020-02-21 | 2020-02-21 | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105879.1A CN111156745A (en) | 2020-02-21 | 2020-02-21 | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111156745A true CN111156745A (en) | 2020-05-15 |
Family
ID=70566035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010105879.1A Pending CN111156745A (en) | 2020-02-21 | 2020-02-21 | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111156745A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05133692A (en) * | 1991-11-11 | 1993-05-28 | Matsushita Refrig Co Ltd | Evaporator |
| KR20020004526A (en) * | 2000-07-06 | 2002-01-16 | 구자홍 | Heat exchanger |
| JP2011106770A (en) * | 2009-11-19 | 2011-06-02 | Panasonic Corp | Heat exchanger and refrigerating cycle device |
| CN103225933A (en) * | 2013-04-09 | 2013-07-31 | 顺德职业技术学院 | Evaporator with variable-toothform internal-thread enhanced tube |
| CN103438620A (en) * | 2013-08-27 | 2013-12-11 | 海尔集团公司 | Efficient evaporator |
| CN103913018A (en) * | 2013-07-24 | 2014-07-09 | 劳特斯空调(江苏)有限公司 | Finned tube air-cooled heat exchanger |
| CN212538372U (en) * | 2020-02-21 | 2021-02-12 | 顺德职业技术学院 | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator |
-
2020
- 2020-02-21 CN CN202010105879.1A patent/CN111156745A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05133692A (en) * | 1991-11-11 | 1993-05-28 | Matsushita Refrig Co Ltd | Evaporator |
| KR20020004526A (en) * | 2000-07-06 | 2002-01-16 | 구자홍 | Heat exchanger |
| JP2011106770A (en) * | 2009-11-19 | 2011-06-02 | Panasonic Corp | Heat exchanger and refrigerating cycle device |
| CN103225933A (en) * | 2013-04-09 | 2013-07-31 | 顺德职业技术学院 | Evaporator with variable-toothform internal-thread enhanced tube |
| CN103913018A (en) * | 2013-07-24 | 2014-07-09 | 劳特斯空调(江苏)有限公司 | Finned tube air-cooled heat exchanger |
| CN103438620A (en) * | 2013-08-27 | 2013-12-11 | 海尔集团公司 | Efficient evaporator |
| CN212538372U (en) * | 2020-02-21 | 2021-02-12 | 顺德职业技术学院 | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105387736A (en) | Efficient heat exchanger employing reinforced spiral pipe | |
| EP2354743A2 (en) | Double-pipe heat exchanger | |
| US20120160465A1 (en) | Heat exchanger | |
| WO2011079483A1 (en) | Coaxial heat exchanger | |
| CN102095283A (en) | Micro-channel parallel flow heat exchanger of air conditioner | |
| CN212538372U (en) | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator | |
| CN212157739U (en) | Condenser with variable-pipe-diameter composite tooth-shaped internal thread reinforced pipe | |
| CN1187563C (en) | Evaporator and refrigerator | |
| CN212157733U (en) | Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator | |
| CN201589465U (en) | Variable-channel mixed flow heat exchanger | |
| CN111156745A (en) | Variable-pipe-diameter composite-tooth-shaped internal thread reinforced pipe evaporator | |
| CN111156744A (en) | Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator | |
| CN212157738U (en) | Variable-pipe-diameter composite twisted elliptic reinforced pipe condenser | |
| CN211824013U (en) | Heat exchange tube, heat exchanger and air conditioning system using heat exchanger | |
| CN103225933B (en) | Become profile of tooth internal thread enhanced tube evaporimeter | |
| CN111141068A (en) | Condenser with variable-pipe-diameter composite tooth-shaped internal thread reinforced pipe | |
| CN103225934B (en) | Become profile of tooth internal thread enhanced tube condenser | |
| CN104040281A (en) | Air conditioner | |
| CN115525997A (en) | Special-shaped microchannel heat exchange tube type design method and system based on arc line | |
| CN203249432U (en) | Variable-tooth-shaped internal thread strengthening tube evaporator | |
| CN2548109Y (en) | Cross-tooth internal thread seamless high-efficiency heat transfer pipe | |
| CN105277021A (en) | Coaxial wound heat exchanger | |
| CN111141067A (en) | Variable-pipe-diameter composite twisted elliptic reinforced pipe condenser | |
| CN210773619U (en) | Internal thread tube structure, heat exchanger and air conditioner | |
| CN210773615U (en) | Outer groove flat twisted winding heat exchange tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |