CN111678373A - Small-pipe-diameter heat exchanger flow guide heat exchange pipe - Google Patents
Small-pipe-diameter heat exchanger flow guide heat exchange pipe Download PDFInfo
- Publication number
- CN111678373A CN111678373A CN202010373691.5A CN202010373691A CN111678373A CN 111678373 A CN111678373 A CN 111678373A CN 202010373691 A CN202010373691 A CN 202010373691A CN 111678373 A CN111678373 A CN 111678373A
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- CN
- China
- Prior art keywords
- heat exchange
- exchange tube
- heat exchanger
- guide vanes
- water area
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- 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.)
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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
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
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- 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 discloses a small-caliber heat exchanger diversion heat exchange tube, which comprises a plate for mounting the heat exchange tube in the small-caliber heat exchanger, the heat exchange tube, a heat exchange tube base and a heat exchange fin arranged on the heat exchange tube; the heat exchange tube is correspondingly and uniformly arranged on the plate at intervals through the heat exchange tube base, and when fluid flows through the heat exchange tube, a dead water area surrounded by two arc lines is formed at the downstream of the heat exchange tube. The guide vanes are symmetrically arranged on the two sides of the dead water area at the downstream of the heat exchange tube, the guide vanes wholly wrap the dead water area, such air flow from the upstream enters from the guide inlets on the two sides of the guide vanes after passing through the heat exchange tube, enters into the dead water area of the heat exchange tube through the guide vanes, and then comes out from the guide outlet, so that the area of the dead water area of the heat exchange tube can be correspondingly reduced, the convection heat exchange of the dead water area is promoted, and the heat exchange performance of the dead water area can be greatly improved through the design.
Description
Technical Field
The invention relates to the technical field of air passage conversion valves, in particular to a flow guide heat exchange tube of a small-caliber heat exchanger.
Background
Because the gaps between the small-caliber heat exchange fins are small, the flow in the heat exchange fins is mostly laminar flow, and the shape and the structure of the fins are simple. The gas passing through the heat exchanger is hindered by the heat exchange tubes, so that a large area of dead water zone is formed downstream of the heat exchange tubes. The heat exchange performance of the dead water zone is close to zero. As shown in fig. 1, the gas enters the heat exchanger along the flow direction, the upstream part of the heat exchanger is a normal heat exchange area, and the downstream part forms a dead water area formed by two arcs.
The downstream dead water area of the heat exchange tube cannot be improved, so that the overall performance of the heat exchange fin can be influenced; generally speaking, when the shape of the heat exchange fin is designed, the longitudinal shape structure of the heat exchange fin is designed, so that flowing air flow can effectively flow into a downstream dead water area of the heat exchange tube, the area of the dead water area is reduced, and the performance of the heat exchange fin is improved; however, in the small-diameter heat exchanger, the gaps between the heat exchange fins are relatively small, so that the longitudinal shape structure cannot be designed in a complex manner, and the shape structure of the fins is generally relatively simple, so that the flowing state of a dead water zone at the downstream of the heat exchange tube cannot be effectively improved.
Disclosure of Invention
The invention aims to provide a flow guide heat exchange tube of a small-caliber heat exchanger aiming at the defects in the prior art, and the technical scheme is as follows:
a diversion heat exchange tube of a small-tube-diameter heat exchanger comprises a plate for mounting the heat exchange tube in the small-tube-diameter heat exchanger, the heat exchange tube, a heat exchange tube base and heat exchange fins arranged on the heat exchange tube; the heat exchange tube pass through the corresponding even installation in interval of heat exchange tube base on the plate, when the fluid flows through the heat exchange tube, the low reaches department of heat exchange tube can form the stagnant water district that is enclosed by two pitch arcs, and the both sides in each stagnant water district still all are provided with the water conservancy diversion piece, the upper reaches front end department of two water conservancy diversion pieces sets up to the water conservancy diversion import, low reaches tail end department sets up to the water conservancy diversion export, and the corresponding width that sets up the water conservancy diversion import is greater than the water conservancy diversion export, and two water conservancy diversion pieces set up with middle heat exchanger base symmetry, and set up the width that the water conservancy diversion was imported and be greater than heat exchange tube base diameter, the gas.
Preferably, the guide vanes on two sides of the same dead water area are symmetrically linear guide vanes, the guide inlets at the front ends of the two linear guide vanes are wide, the guide outlets at the rear ends of the two linear guide vanes are narrow, and the included angle between the two linear guide vanes is 20-45 degrees.
Preferably, the guide vanes on two sides of the same dead water area are symmetrical arc-shaped guide vanes, and the arc-shaped guide vanes are arranged in an arc-shaped structure extending outwards from the dead water area.
Preferably, the flow deflectors on two sides of the same dead water area are streamline flow deflectors, and each side stream line type flow deflector is symmetrically provided with a plurality of layers.
Preferably, the heat exchange tubes are arranged in a plurality of rows, and the positions of the heat exchange tubes in adjacent rows are arranged in a staggered manner.
Has the advantages that: compared with the prior art, the invention has the following beneficial effects:
(1) the device is characterized in that guide vanes are symmetrically arranged on two sides of a dead water area at the downstream of a heat exchange tube, the integral structure of each guide vane is correspondingly set to be a structural form that a guide inlet at the front end of the upstream is wide, a guide inlet at the rear end of the downstream is narrow, the guide inlets at the front ends of the guide vanes on the two sides are correspondingly larger than that of the heat exchange tube, the guide vanes wholly wrap the dead water area, and thus airflow from the upstream enters from the guide inlets at the two sides of the guide vanes after passing through the heat exchange tube, enters into the dead water area of the heat exchange tube after being guided by the guide vanes and then comes out from the guide outlet, the area of the dead water area of the heat exchange tube can be correspondingly reduced, the convection heat exchange of the dead water area is promoted, and the heat exchange performance of the dead;
(2) the shape of the flow deflector in the device can be correspondingly set into a linear structure and a streamline structure, and can be thinned into an arc-line structure; the included angle of the linear structure is 20-45 degrees, so that the gas is conveniently guided to enter the dead water area along the flow guide inlet; the air flow resistance of the flow deflector with the streamline structure is minimum, so that when the air flow enters a dead water area, the influence of the Karman vortex street can be correspondingly reduced, and the air flow is more stable and smooth; and the streamlined flow deflector in this device can be provided with the multilayer correspondingly, can promote the heat transfer effect greatly.
Drawings
FIG. 1 is a prior art block diagram;
FIG. 2 is a view of a linear guide vane structure according to the present invention;
FIG. 3 is a view of the structure of the arc-shaped guide vane of the present invention;
fig. 4 is a structure diagram of a streamline guide vane of the invention.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 2, 3 and 4, a small-caliber heat exchanger diversion heat exchange tube comprises a plate 1 for installing the heat exchange tube in the small-caliber heat exchanger, a heat exchange tube 2, a heat exchange tube base 3 and a heat exchange fin 4 arranged on the heat exchange tube 2; the heat exchange tube 2 is correspondingly and uniformly arranged on the plate 1 at intervals through the heat exchange tube base 3, when fluid flows through the heat exchange tube 2, a dead water area 5 surrounded by two arcs is formed at the downstream of the heat exchange tube 2, flow deflectors 6 are arranged on two sides of each dead water area 5, a flow guide inlet 61 is arranged at the front end of the upstream of each flow deflector 6, a flow guide outlet 62 is arranged at the tail end of the downstream, the width of the flow guide inlet 61 is correspondingly larger than that of the flow guide outlet 62, the two flow deflectors 6 are symmetrically arranged with the heat exchanger base 3 in the middle, the width of the flow guide inlet 61 is larger than the diameter of the heat exchange tube base 3, and gas at the upstream enters from the flow guide inlet 61 and is guided to the dead water area 5 through.
As shown in fig. 2, the guide vanes 6 on both sides of the same dead water region 5 are symmetrically arranged as linear guide vanes, the guide inlets 62 at the front ends of the two linear guide vanes are wide, the guide outlets 62 at the rear ends of the two linear guide vanes are narrow, and the included angle between the two linear guide vanes is set to be 20-45 °.
As shown in fig. 3, the baffles 6 on both sides of the same dead water zone 5 are symmetrical arc-shaped baffles, and the arc-shaped baffles are arranged in an arc structure extending outward from the dead water zone 5.
As shown in fig. 4, the flow deflectors 6 on both sides of the same dead water zone 5 are streamline flow deflectors, and each side stream line type flow deflector is symmetrically provided with a plurality of layers; the heat exchange tubes 2 are arranged in a plurality of rows, and the positions of the heat exchange tubes 2 in adjacent rows are arranged in a staggered manner.
The guide vanes are symmetrically arranged on two sides of the dead water area at the downstream of the heat exchange tube in the device, the integral structure of the guide vanes is correspondingly set to be that the guide inlet at the front end of the upstream is wide, the guide inlet at the rear end of the downstream is narrow, the width of the guide inlet at the front end of the guide vanes on the two sides is correspondingly larger than that of the heat exchange tube, the guide vanes wholly wrap the dead water area, the air flow from the upstream enters from the guide inlets at the two sides of the guide vanes after passing through the heat exchange tube, enters into the dead water area of the heat exchange tube through the guide of the guide vanes and then comes out from the guide outlet, the area of the dead water area of the heat exchange tube can be correspondingly reduced, the convection heat exchange of the dead water area is promoted, and the heat exchange performance of the dead water area.
The shape of the flow deflector in the device can be correspondingly set into a linear structure and a streamline structure, and can be thinned into an arc-line structure; the included angle of the linear structure is 20-45 degrees, so that the gas is conveniently guided to enter the dead water area along the flow guide inlet; the air flow resistance of the flow deflector with the streamline structure is minimum, so that when the air flow enters a dead water area, the influence of the Karman vortex street can be correspondingly reduced, and the air flow is more stable and smooth; and the streamlined flow deflector in this device can be provided with the multilayer correspondingly, can promote the heat transfer effect greatly.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (5)
1. A small-caliber heat exchanger diversion heat exchange tube is characterized in that: the heat exchanger comprises a plate (1) for mounting a heat exchange tube in a small-caliber heat exchanger, a heat exchange tube (2), a heat exchange tube base (3) and heat exchange fins (4) arranged on the heat exchange tube (2); the heat exchange tube (2) pass through the corresponding even installation of interval in heat exchange tube base (3) on plate (1), when fluid flows through heat exchange tube (2), the low reaches department of heat exchange tube (2) can form stagnant water district (5) that enclose by two pitch arcs, and the both sides of each stagnant water district (5) still all are provided with water conservancy diversion piece (6), the upper reaches front end department of two water conservancy diversion pieces (6) sets up to water conservancy diversion import (61), low reaches tail end department sets up to water conservancy diversion export (62), and the corresponding width that sets up water conservancy diversion import (61) is greater than water conservancy diversion export (62), and two water conservancy diversion pieces (6) are with heat exchanger base (3) symmetry setting in the middle, and the width that sets up water conservancy diversion import (61) is greater than heat exchange tube base (3) diameter, the gas in upper reaches and leads to stagnant water district (5) via water conservancy diversion piece (6) from water conservancy.
2. The flow guiding heat exchange tube of a small-caliber heat exchanger of claim 1, wherein: the guide vanes (6) on two sides of the same dead water area (5) are symmetrically arranged into linear guide vanes, the guide inlet (62) at the front end of each linear guide vane is wide, the guide outlet (62) at the rear end of each linear guide vane is narrow, and the included angle between the two linear guide vanes is 20-45 degrees.
3. The flow guiding heat exchange tube of a small-caliber heat exchanger of claim 1, wherein: the guide vanes (6) on two sides of the same dead water area (5) are symmetrically arc-shaped guide vanes, and the arc-shaped guide vanes are arranged into arc structures which extend outwards from the dead water area (5).
4. The flow guiding heat exchange tube of a small-caliber heat exchanger of claim 1, wherein: the flow deflectors (6) on two sides of the same dead water area (5) are streamline flow deflectors, and each side stream line type flow deflector is symmetrically provided with a plurality of layers.
5. The flow guiding heat exchange tube of a small-caliber heat exchanger as claimed in claim 4, wherein: the heat exchange tubes (2) are arranged in a plurality of rows, and the positions of the heat exchange tubes (2) in the adjacent rows are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373691.5A CN111678373A (en) | 2020-05-06 | 2020-05-06 | Small-pipe-diameter heat exchanger flow guide heat exchange pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373691.5A CN111678373A (en) | 2020-05-06 | 2020-05-06 | Small-pipe-diameter heat exchanger flow guide heat exchange pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111678373A true CN111678373A (en) | 2020-09-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010373691.5A Pending CN111678373A (en) | 2020-05-06 | 2020-05-06 | Small-pipe-diameter heat exchanger flow guide heat exchange pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111678373A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166295A (en) * | 1986-01-20 | 1987-07-22 | Matsushita Electric Ind Co Ltd | Heat exchanger with fins |
| JPH04244593A (en) * | 1991-01-10 | 1992-09-01 | Toshiba Corp | Heat exchanger |
| JP4115390B2 (en) * | 2001-08-10 | 2008-07-09 | よこはまティーエルオー株式会社 | Heat transfer device |
| CN204461180U (en) * | 2014-11-25 | 2015-07-08 | 天津华信机械有限公司 | A kind of heat exchanger fin |
-
2020
- 2020-05-06 CN CN202010373691.5A patent/CN111678373A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166295A (en) * | 1986-01-20 | 1987-07-22 | Matsushita Electric Ind Co Ltd | Heat exchanger with fins |
| JPH04244593A (en) * | 1991-01-10 | 1992-09-01 | Toshiba Corp | Heat exchanger |
| JP4115390B2 (en) * | 2001-08-10 | 2008-07-09 | よこはまティーエルオー株式会社 | Heat transfer device |
| CN204461180U (en) * | 2014-11-25 | 2015-07-08 | 天津华信机械有限公司 | A kind of heat exchanger fin |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200918 |