CN216815159U - Small-diameter finned heat exchanger - Google Patents
Small-diameter finned heat exchanger Download PDFInfo
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- CN216815159U CN216815159U CN202220145428.5U CN202220145428U CN216815159U CN 216815159 U CN216815159 U CN 216815159U CN 202220145428 U CN202220145428 U CN 202220145428U CN 216815159 U CN216815159 U CN 216815159U
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Abstract
The utility model belongs to the technical field of heat exchangers, and particularly relates to a small-pipe-diameter finned heat exchanger which comprises a base pipe and a plurality of fins sleeved on the base pipe, wherein circular hole bosses matched with the base pipe are arranged on the fins, a plurality of longitudinal vortex generators which are uniformly distributed in an annular shape are arranged on the periphery of each circular hole boss, each longitudinal vortex generator is triangular or wedge-shaped, the smaller ends of the longitudinal vortex generators are consistent in orientation, the transverse section and the longitudinal section of each longitudinal vortex generator are arc-shaped, the included angle alpha between the back tangent of each longitudinal vortex generator and a fin body is not more than 90 degrees, the heat exchange performance is good, and the increase of flow resistance is small.
Description
Technical Field
The utility model belongs to the technical field of heat exchangers, and particularly relates to a small-pipe-diameter finned heat exchanger.
Background
The small diameter of the heat exchanger reduces the heat exchange area in the tube of a single copper tube, and the heat exchanger needs to be matched with fins with higher heat exchange performance. The method for improving the heat exchange performance of the fins mainly optimizes the structural parameters of the surfaces of the fins, including the hole spacing of the heat exchange fins and the reinforcing structure of the heat exchange fins. The hole interval that is applicable to the fin of slim pipe diameter has passed through abundant optimization at present, and multiple hole interval structure has been developed moreover and the volume production is used, and the structure type of reinforceing of the fin that the volume production was used at present includes traditional bridge seam and this two kinds of tripe slot, and novel type of reinforceing mainly has fretwork fin and vertical vortex fin.
The longitudinal vortex fins can greatly improve the heat exchange capacity of the heat exchanger, and the application is more and more extensive, however, the structure and the distribution of the longitudinal vortex generators of the existing longitudinal vortex fins are not reasonable, so that the flow resistance of the longitudinal vortex generators is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a small-caliber finned heat exchanger aiming at the defects, and solves the problem.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
small pipe diameter finned heat exchanger establishes a plurality of fins on the parent tube including parent tube, cover, the fin on be equipped with parent tube complex round hole boss, be equipped with a plurality of vertical vortex generators that are cyclic annular evenly distributed around every round hole boss, vertical vortex generator be triangle-shaped or wedge, the orientation of a plurality of vertical vortex generators's less end is unanimous, vertical vortex generator's transverse profile, longitudinal profile are the arc, vertical vortex generator's the back tangent line and the contained angle alpha between the fin lamellar body are not more than 90.
Further, the round hole boss correspond the department by the fin lamellar body and form to the outside upset, the round hole boss includes the cylindric second boss on first boss, first boss upper portion, the upper and lower port of second boss is smooth tubaeform structure, the bottom of second boss meets with the upper end of first boss is level and smooth, the maximum external diameter of second boss is less than the upper end external diameter of first boss.
Further, the thickness of the fin is 0.115-0.180 mm.
Furthermore, the first boss is of a step tubular structure, and the height of the first boss is 0.2 mm.
Furthermore, the number of the longitudinal vortex generators is 4.
Furthermore, the smaller ends of the longitudinal vortex generators face to the direction along the pointer.
Further, the maximum height of the longitudinal vortex generator is 0.4 mm.
Furthermore, the circle of the plurality of longitudinal vortex generators is concentric with the circular hole boss.
The utility model has the beneficial effects that: by adopting the scheme, the heat exchanger is high in applicability and relatively has the advantages that the heat exchanger can be matched with multidirectional airflow to generate a longitudinal vortex effect, the heat exchange performance is improved, the influence factor of the installation position or the space of the heat exchange equipment is reduced, meanwhile, the longitudinal vortex can enable the speed of the flowing direction to be changed very little, the resistance loss is increased less, and the heat exchanger has better heat exchange performance.
Drawings
The foregoing and other objects, features, and advantages of the utility model will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a partial schematic view of one embodiment of the present invention.
FIG. 2 is a top view of a circular hole boss in one embodiment of the present invention.
FIG. 3 is a schematic longitudinal cross-sectional view of a longitudinal vortex generator according to an embodiment of the present invention.
FIG. 4 is a schematic longitudinal cross-sectional view of a round hole boss according to an embodiment of the present invention.
Wherein: the vortex generator comprises fins 1, circular hole bosses 2, first bosses 21, second bosses 22 and longitudinal vortex generators 3.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1-4, the finned heat exchanger with small tube diameter comprises a base tube (not shown in the figure), a plurality of fins 1 sleeved on the base tube, round hole bosses 2 matched with the base tube are arranged on the fins 1, the round hole bosses 2 are distributed on the fins 1 in a longitudinal and transverse manner in a plurality of ways, the round hole bosses 2 of two adjacent ways are distributed in a staggered manner, the distribution promotes improvement of heat dissipation efficiency and reduction of flow resistance, four longitudinal vortex generators 3 are uniformly distributed in an annular manner around each round hole boss 2, the four longitudinal vortex generators 3 are distributed on the same circle, the circle is concentric with the round hole bosses 2, specifically, the longitudinal vortex generator 3 is in a triangular or wedge-shaped structure, the transverse section and the longitudinal section of the longitudinal vortex generator 3 are arc-shaped, the longitudinal vortex generator 3 is in a triangular or wedge-shaped arc-shaped plate structure, and the smaller end of the longitudinal vortex generator 3 points to one side clockwise, the heat exchange air flow in all directions can generate longitudinal vortex at the round hole boss to cause secondary flow along with the heat exchange air flow, so that the mutual mixing between cold and hot fluids is accelerated, the flow direction of a part of the fluid is changed when the fluid flows through the longitudinal vortex generator 3, and the fluid passes through the base tube and the longitudinal vortex generator 3 to form a fluid channel to reach the tail part of the circular tube, so that the backflow area at the tail part of the circular tube is reduced, the heat exchange performance between fins at the tail part of the circular tube and the fluid is improved, and the dissipation of mechanical energy in a wake flow area is reduced,
the longitudinal vortex generator 3 is of an arc-shaped structure in the transverse section and the longitudinal section, and is made to be of an arc-shaped plate structure in a three-dimensional space, in addition, the included angle alpha between the back tangent line of the longitudinal vortex generator 3 and the fin body is not larger than 90 degrees, in the radial direction, the upper end of the longitudinal vortex generator 3 inclines towards the circle center, the structure can better inhibit the increase of flow resistance, the heat exchange capacity is improved, and the flow resistance is little increased when the heat exchanger has better heat exchange capacity.
Specifically, the fin 1 adopts an aluminum foil sheet with the thickness of 0.115mm, the round hole boss 2 is formed by outwards turning the corresponding part of the fin 1, the round hole boss 2 comprises a step tubular first boss 21 and a cylindrical second boss 22 at the upper part of the first boss 21, the upper and lower ports of the second boss 22 are both in a smooth horn-shaped structure, the bottom end of the second boss 22 is smoothly connected with the upper end of the first boss 21, the outer diameter of the bottom end of the second boss 22 is the largest, the outer diameter of the bottom end of the second boss 22 is smaller than that of the upper end of the first boss 21, the height of the first boss is 0.2mm, the structure is convenient to process and manufacture, and the round hole boss has better structural strength, thereby being convenient to be matched with a base pipe and improving the connectivity of the matched part, the first boss and the second boss gradually transition can avoid stress concentration of the formed sheet body and avoid tearing, the first boss 21 can also be matched with a longitudinal vortex of the part, the utility of the vertical vortex is improved, the heat exchange performance is enhanced, the vertical vortex generator 3 is formed by stamping and protruding fin bodies at corresponding positions, the maximum height of the vertical vortex generator is 0.4mm, the added vertical vortex utility can be formed, the structural strength of the fin cannot be influenced, the vertical vortex holes are formed at corresponding positions on the fin, and the fin is provided with a hollowed-out fin structure through the vertical vortex holes, so that the heat exchange performance is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides a little pipe diameter fin type heat exchanger, includes the parent tube, establishes a plurality of fins on the parent tube, its characterized in that: the fin on be equipped with parent tube complex round hole boss, be equipped with a plurality of vertical vortex generators that are cyclic annular evenly distributed around every round hole boss, vertical vortex generator be triangle-shaped or wedge, the orientation of a plurality of vertical vortex generator's less terminal is unanimous, vertical vortex generator's horizontal section, vertical section are the arc, vertical vortex generator's the back tangent line and the fin lamellar body between contained angle alpha be not more than 90.
2. The small-tube-diameter finned heat exchanger of claim 1, wherein: the round hole boss correspond the department by the fin lamellar body and form to the outside upset, the round hole boss includes the cylindric second boss on first boss, first boss upper portion, the upper and lower port of second boss is level and smooth loudspeaker column structure, the bottom of second boss meets with the upper end of first boss is level and smooth, the maximum external diameter of second boss is less than the upper end external diameter of first boss.
3. The small-tube-diameter finned heat exchanger of claim 1, wherein: the thickness of the fin is 0.115-0.180 mm.
4. The small-tube-diameter finned heat exchanger of claim 2, wherein: the first boss is of a step tubular structure, and the height of the first boss is 0.2 mm.
5. The small-tube-diameter finned heat exchanger of claim 1, wherein: the number of the longitudinal vortex generators is 4.
6. The small-tube-diameter finned heat exchanger of claim 1, wherein: the smaller ends of the longitudinal vortex generators face to the direction along the pointer.
7. The small-tube-diameter finned heat exchanger of claim 1, wherein: the maximum height of the longitudinal vortex generator is 0.4 mm.
8. The small-tube-diameter finned heat exchanger of claim 1, wherein: the circle of the plurality of longitudinal vortex generators is concentric with the circular hole boss.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123089246 | 2021-12-09 | ||
| CN2021230892465 | 2021-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216815159U true CN216815159U (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220145428.5U Active CN216815159U (en) | 2021-12-09 | 2022-01-19 | Small-diameter finned heat exchanger |
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| CN (1) | CN216815159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526630A (en) * | 2022-01-19 | 2022-05-24 | 常州市常蒸热交换器科技有限公司 | Small-diameter finned heat exchanger |
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2022
- 2022-01-19 CN CN202220145428.5U patent/CN216815159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526630A (en) * | 2022-01-19 | 2022-05-24 | 常州市常蒸热交换器科技有限公司 | Small-diameter finned heat exchanger |
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