CN202709807U - Air heat exchanger - Google Patents
Air heat exchanger Download PDFInfo
- Publication number
- CN202709807U CN202709807U CN 201220275291 CN201220275291U CN202709807U CN 202709807 U CN202709807 U CN 202709807U CN 201220275291 CN201220275291 CN 201220275291 CN 201220275291 U CN201220275291 U CN 201220275291U CN 202709807 U CN202709807 U CN 202709807U
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- CN
- China
- Prior art keywords
- heat exchange
- heat exchanger
- tube
- exchange pipe
- tube sheet
- 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.)
- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses an air heat exchanger which comprises a heat exchanger outer frame, wherein a finned heat exchange tube group is disposed in the heat exchanger outer frame, the finned heat exchange tube group includes a front tube plate, a rear tube plate and a plurality of finned heat exchange tubes, two ends of every heat exchange tube are welded onto the tube plate, a connection header is welded on the tube plates at two ends of the finned heat exchange tube group, a tube pass medium connection tube is disposed on the connection header, a retractable expansion joint is respectively disposed at one end of every finned heat exchange tube, the retractable expansion joints on adjacent finned heat exchange tubes are staggered reversely, and a U-shaped expansion joint is arranged in an outer frame having the same trend with the finned heat exchange tubes in the heat exchanger outer frame. The air heat exchanger is simple in structure, can stably perform heat exchange on media having large temperature difference, and is long in service life.
Description
Technical field
The utility model relates to a kind of heat exchanger, and is especially a kind of for the air heat exchanger to air heat or cooling.
Background technology
Air heat exchanger is a kind of for the Thermal Equipment to air heat or cooling, and air heat exchanger of the prior art adopts the fin heat exchange pipe group more, is about to many fin heat exchange pipe two ends and is welded on the tube sheet, makes set of heat exchange tubes.This air heat exchanger is in heat transfer process; when the temperature difference of heat transferring medium is larger; fin heat exchange pipe is under the effect of expanding with heat and contract with cold; can produce vertically the variation of length; this variation meeting produces STRESS VARIATION between the tube sheet at fin heat exchange pipe and two ends; in weld cracking or the sealing-off phenomenon of fin heat exchange pipe and tube sheet, affect normal heat exchange easily.CN102235835A discloses a kind of floating-head type air heat exchanger, this floating-head type air heat exchanger adopts at fin heat exchange pipe two ends tube sheet peripheral hardware supporting box, fin heat exchange pipe one end tube sheet is made the floating head type tube sheet, expanding with heat and contract with cold of fin heat exchange pipe can compensate by the displacement of floating head type tube sheet in supporting is closed, and reaches to prevent that fin heat exchange pipe from expanding with heat and contract with cold integral device is caused damage.But, this floating-head type air heat exchanger is in order to realize the sealing to the floating head type tube sheet, need to adopt the movable sealing structure of slidingtype, therefore, in the course of the work, owing to all easily to making the floating tubesheet can not normal displacement, and cause weld cracking or sealing-off phenomenon at fin heat exchange pipe and tube sheet when excessive temperature differentials when expanding with heat and contract with cold, when sealing contact surface enters impurity, sealing device corrosion, affect the normal operation of heat exchanger.
The utility model content
The technical problem that utility model will solve: a kind of air heat exchanger is provided, and this air heat exchanger is simple in structure, can stably carry out heat exchange, long service life to the larger medium of the temperature difference.
The technical scheme that the technical solution problem is taked: a kind of air heat exchanger, comprise the heat exchanger housing, in the heat exchanger housing, be provided with the fin heat exchange pipe group, described fin heat exchange pipe group is made of front tube sheet, back tube sheet and Duo Gen fin heat exchange pipe, the fin heat exchange pipe two ends are welded on the tube sheet, tube sheet at the set of heat exchange tubes two ends is welded with the articulation set case, is provided with the tube side medium at the articulation set case and takes over, and is provided with flexible expansion joint at an end of every fin heat exchange pipe.
As improvement of the present utility model: the reverse interleaved setting of flexible expansion joint on the adjacent fins heat exchanger tube.
As further improvement of the utility model: in the housing of heat exchanger, be provided with the U-shaped expansion joint with the frame of the identical trend of fin heat exchange pipe.
Beneficial effect: air heat exchanger of the present utility model is owing to adopted described air heat exchanger to comprise the heat exchanger housing, in the heat exchanger housing, be provided with the fin heat exchange pipe group, described fin heat exchange pipe group is by front tube sheet, back tube sheet and Duo Gen fin heat exchange pipe consist of, the fin heat exchange pipe two ends are welded on the tube sheet, tube sheet at the set of heat exchange tubes two ends is welded with the articulation set case, being provided with the tube side medium at the articulation set case takes over, be provided with the technical scheme of flexible expansion joint at an end of every fin heat exchange pipe, by flexible expansion joint is set at fin heat exchange pipe, the axial length variation that comes fin heat exchange pipe is produced because expanding with heat and contract with cold with expansion joint compensates, prevent that fin heat exchange pipe from directly producing tractive to tube sheet, cause weld cracking or the sealing-off of fin heat exchange pipe and tube sheet, therefore, air heat exchanger of the present utility model has simple in structure, can stably carry out heat exchange, long service life to large temperature difference medium; Owing to adopted the reverse interleaved technical characterictic that arranges of flexible expansion joint on the adjacent fins heat exchanger tube, make the tube sheet at two ends stressed more even, further alleviated the impact of expanding with heat and contract with cold on the weld part of fin heat exchange pipe and tube sheet; Owing to adopted the technical characterictic that in the housing of heat exchanger, is provided with the U-shaped expansion joint with the frame of the identical trend of fin heat exchange pipe, also alleviated the impact of phenomenon on housing of expanding with heat and contract with cold, prevent that being fixedly connected with between housing and tube sheet is damaged, therefore, improve the adaptive capacity of the air heat exchanger heat exchanging medium temperature difference of the present utility model, prolonged the service life of air heat exchanger.
Description of drawings
Fig. 1 is the structural representation of air heat exchanger of the present utility model.
The specific embodiment
As shown in Figure 1, air heat exchanger of the present utility model, comprise heat exchanger housing 1, in the heat exchanger housing, be provided with fin heat exchange pipe group 2, described fin heat exchange pipe group is by front tube sheet 21, back tube sheet 22 and Duo Gen fin heat exchange pipe 23 consist of, the fin heat exchange pipe two ends are welded on the tube sheet, tube sheet at the set of heat exchange tubes two ends is welded with articulation set case 3, be provided with the tube side medium at the articulation set case and take over 4, end at every fin heat exchange pipe is provided with flexible expansion joint 24, the reverse interleaved setting of flexible expansion joint on the adjacent fins heat exchanger tube is provided with U-shaped expansion joint 12 with the frame 11 of the identical trend of fin heat exchange pipe in the housing of heat exchanger.
Claims (3)
1. air heat exchanger, comprise the heat exchanger housing, in the heat exchanger housing, be provided with the fin heat exchange pipe group, it is characterized in that: described fin heat exchange pipe group is made of front tube sheet, back tube sheet and Duo Gen fin heat exchange pipe, the fin heat exchange pipe two ends are welded on the tube sheet, tube sheet at the set of heat exchange tubes two ends is welded with the articulation set case, is provided with the tube side medium at the articulation set case and takes over, and is provided with flexible expansion joint at an end of every fin heat exchange pipe.
2. air heat exchanger according to claim 1 is characterized in that: the reverse interleaved setting of flexible expansion joint on the adjacent fins heat exchanger tube.
3. air heat exchanger according to claim 1 and 2 is characterized in that: be provided with the U-shaped expansion joint with the frame of the identical trend of fin heat exchange pipe in the housing of heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275291 CN202709807U (en) | 2012-06-12 | 2012-06-12 | Air heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275291 CN202709807U (en) | 2012-06-12 | 2012-06-12 | Air heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202709807U true CN202709807U (en) | 2013-01-30 |
Family
ID=47590098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220275291 Expired - Fee Related CN202709807U (en) | 2012-06-12 | 2012-06-12 | Air heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202709807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312991A (en) * | 2016-07-01 | 2019-02-05 | 三菱电机株式会社 | Heat exchanger and the refrigerating circulatory device for having the heat exchanger |
-
2012
- 2012-06-12 CN CN 201220275291 patent/CN202709807U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312991A (en) * | 2016-07-01 | 2019-02-05 | 三菱电机株式会社 | Heat exchanger and the refrigerating circulatory device for having the heat exchanger |
| CN109312991B (en) * | 2016-07-01 | 2020-11-10 | 三菱电机株式会社 | Heat exchanger and refrigeration cycle device provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20180612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |