CN103697724A - Double-pipe heat exchanger - Google Patents
Double-pipe heat exchanger Download PDFInfo
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- CN103697724A CN103697724A CN201210376600.9A CN201210376600A CN103697724A CN 103697724 A CN103697724 A CN 103697724A CN 201210376600 A CN201210376600 A CN 201210376600A CN 103697724 A CN103697724 A CN 103697724A
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- heat exchanger
- tube
- sleeve pipe
- exchanger tube
- double
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Abstract
The invention discloses a double-pipe heat exchanger, which comprises an outer tube and an inner tube arranged in the outer tube, wherein the inner tube comprises a first heat exchange tube, more than two second heat exchange tubes placed into the first heat exchange tube, and a heat-conducting medium filled between the first heat exchange tube and the second heat exchange tube. The double-pipe heat exchanger disclosed by the invention has the advantages of simple production process, low flow resistance of the heat exchange medium and high pressure resistance.
Description
Technical field
The present invention relates to a kind of heat-exchange device, particularly relate to a kind of double pipe heat exchanger.
Background technology
At present, the double-tube heat exchanger on market mostly is common coaxial sleeve heat exchanger, bundled tube double-tube heat exchanger, and these two kinds of double-tube heat exchangers have very ripe process technology, and are widely used; In recent years, also occurred around tubular type double-tube heat exchanger, around tubular type double-tube heat exchanger, be the many tubules of outer surface spiral winding a supervisor, supervisor's outer surface is provided with spiral grooves, and tubule is placed in spiral grooves, and many tubules adopt parallel connection or series system, in supervisor and tubule, with reflux type, walk respectively two kinds of fluids, realize heat exchange, but be wound around after tubule around tubular type double-tube heat exchanger, supervisor is carried out to bending and be very easy to cause the tubule of inner side to form quality problems; In addition, because the radius of tubule spiral winding is smaller, wall thickness reduction is more severe outside tubule, thereby compressive resistance is declined, and also easily causes the quality problems in use; Meanwhile, process spiral grooves also more difficult on supervisor, cost compare is high, it is carried out to bending and also easily occur quality problems.
Around tubular type double-tube heat exchanger, coaxial sleeve heat exchanger and bundled tube double-tube heat exchanger, be all difficult to accomplish resistance to super-pressure, such as the air cooler for CO 2 cross-critical circulation just cannot be used above several heat exchanger.
Inner tube adopts the coaxial sleeve heat exchanger of two-tube wall also to have processing difficulties, after leakage, substantially cannot overhaul; In addition, between double-layer tube wall, can have gap, the air in these gaps can affect heat transfer effect.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of double pipe heat exchanger simple in structure, reasonable in design, its production technology is simple, heat transferring medium flow resistance is little, holds compression resistance high, and the present invention realizes the technical scheme that above-mentioned purpose adopts and is:
A kind of double pipe heat exchanger, comprise outer tube and be placed in the inner tube in described outer tube, described inner tube comprises the first heat exchanger tube, is placed in the second heat exchanger tube of two more parallels connections in described the first heat exchanger tube and is filled in the heat-conducting medium between described the first heat exchanger tube and the second heat exchanger tube.
More preferably, described double pipe heat exchanger also comprises current divider, and described current divider is arranged on the end of the second heat exchanger tube of described inner tube, between the second heat exchanger tube for two more parallels, connects.
Further, described double pipe heat exchanger also comprises the first sleeve pipe and the second sleeve pipe;
Described the first sleeve pipe is arranged on the end of the first heat exchanger tube of described inner tube, for connecting described current divider and described the first heat exchanger tube;
Described the second sleeve pipe is arranged on the end of described outer tube, and described the second sleeve pipe is used for connecting described outer tube and described the first heat exchanger tube;
The tube wall of described the second sleeve pipe is provided with through hole, and described through hole is used for the heat exchanging fluid that circulates.
More preferably, the junction of the junction of described current divider and described the first sleeve pipe and described the first heat exchanger tube and described the first sleeve pipe all adopts welded seal;
The junction of the junction of described outer tube and described the second sleeve pipe and described the first heat exchanger tube and described the second sleeve pipe also all adopts welded seal.
More preferably, described the first heat exchanger tube is multi-start helical tubes.
More preferably, the cross sectional shape of described the first heat exchanger tube is track type.
More preferably, described outer tube and the inner tube that is placed in described outer tube are laminated into track type, mosquito-repellent incense-shaped or cylindrical by bending.
More preferably, described heat-conducting medium is heat conductive silica gel.
The invention has the beneficial effects as follows: double pipe heat exchanger production technology of the present invention is simple, heat transferring medium flow resistance is little, holds compression resistance high.
Accompanying drawing explanation
The schematic diagram of Fig. 1 double pipe heat exchanger one embodiment of the present invention;
Fig. 2 is the cross-sectional schematic of double pipe heat exchanger shown in Fig. 1;
The assembling schematic diagram of Fig. 3 double pipe heat exchanger one embodiment of the present invention;
Fig. 4 is the schematic cross-section that is provided with double pipe heat exchanger shown in Fig. 3 of four the second heat exchanger tubes;
Fig. 5 is that schematic diagram is looked on a left side that is provided with double pipe heat exchanger shown in Fig. 3 of four the second heat exchanger tubes;
Fig. 6 is that the first heat exchanger tube is the schematic diagram of double pipe heat exchanger of the present invention one embodiment of multi-start helical tubes;
Fig. 7 is the cross-sectional schematic of Fig. 6;
Fig. 8 is provided with the double pipe heat exchanger left side shown in Fig. 6 of seven the second heat exchanger tubes to look schematic diagram.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, double pipe heat exchanger of the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Referring to figs. 1 through Fig. 8, double pipe heat exchanger one embodiment of the present invention comprises current divider 1, the first sleeve pipe 2, the second sleeve pipe 3, outer tube 4 and is placed in the inner tube in described outer tube 4, and this double pipe heat exchanger is symmetrical, and the number of components of its both sides is identical;
Described inner tube comprises the first heat exchanger tube 5, is placed in the second heat exchanger tube 51 of two more parallels connections in described the first heat exchanger tube 5 and is filled in the heat-conducting medium 52 between described the first heat exchanger tube 5 and the second heat exchanger tube 51, wherein, the first heat exchanger tube 5 and the second heat exchanger tube 51 are copper pipe or other metal tubes, two above the second heat exchanger tubes 51 are put into the first heat exchanger tube 5, the middle part overwhelming majority of the first heat exchanger tube 5 is squeezed into the cross section (see figure 4) of track type, or be twisted into multi-start helical tubes (see figure 6), the inwall of the first heat exchanger tube 5 contacts with the outer wall of the second heat exchanger tube 51, the two ends of the first heat exchanger tube 5 can keep original round tube shape, the first heat exchanger tube 5 also can be multi-start helical tubes, multi-start helical tubes has played the effect that increases heat exchange area, filling heat-conductive medium 52 in gap between the first heat exchanger tube 5 and the second heat exchanger tube 51, heat-conducting medium 52 is heat conductive silica gel, heat-conducting silicone grease or other good heat-conducting mediums,
Every end of the second heat exchanger tube 51 of described inner tube is equipped with a current divider 1, and current divider 1 is for connecting between the second heat exchanger tube 51 of two more parallels;
The first sleeve pipe 2 is arranged on the end of the first heat exchanger tube 5 of described inner tube, and the first sleeve pipe 2 is for connecting current divider 1 and the first heat exchanger tube 5; The junction of the junction of current divider 1 and the first sleeve pipe 2 and the first heat exchanger tube 5 and the first sleeve pipe 2 all adopts welded seal;
The second sleeve pipe 3 arranges the end of outer tube 4, and the second sleeve pipe 3 is for connecting outer tube 4 and the first heat exchanger tube 5; The junction of the junction of outer tube 4 and the second sleeve pipe 3 and the first heat exchanger tube 5 and the second sleeve pipe 3 also all adopts welded seal.
The first sleeve pipe 2 and the second sleeve pipe 3 are Steel material or other metal materials.
The second heat exchanger tube 51 can be used as the circulation passage of the carbon dioxide of cold-producing medium or super-pressure, gap between the first heat exchanger tube 5 outer walls and outer tube 4 inwalls is heat exchanging fluid passage, described heat exchanging fluid can be water, the tube wall of described the second sleeve pipe 3 is provided with through hole 31,32, through hole 31 on second sleeve pipe 3 in left side is water inlet, and the through hole 32 on second sleeve pipe 3 on right side is delivery port; Or the through hole 31 on second sleeve pipe 3 in left side is delivery port, the through hole 32 on second sleeve pipe 3 on right side is water inlet; The flow direction of the carbon dioxide of the flow direction of water in outer tube 4 and cold-producing medium or super-pressure in the second heat exchanger tube 51 is contrary.
More preferably, as a kind of embodiment, described outer tube 4 and the inner tube being placed in described outer tube 4 are laminated into track type, mosquito-repellent incense-shaped or cylindrical by bending.
The double pipe heat exchanger of the present embodiment, production technology is simple, heat transferring medium flow resistance is little, holds compression resistance high, and the first heat exchanger tube and outer tube can play double shielding effect, have extended the life-span of heat exchanger tube, make double pipe heat exchanger safer; Many the second heat exchanger tube parallel connections can ensure larger heat exchange area, have reduced the resistance of its internal flow medium simultaneously.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a double pipe heat exchanger, comprises outer tube and is placed in the inner tube in described outer tube, it is characterized in that:
Described inner tube comprises the first heat exchanger tube, is placed in the second heat exchanger tube of two more parallels connections in described the first heat exchanger tube and is filled in the heat-conducting medium between described the first heat exchanger tube and the second heat exchanger tube.
2. double pipe heat exchanger according to claim 1, is characterized in that:
Also comprise current divider, described current divider is arranged on the end of the second heat exchanger tube of described inner tube, between the second heat exchanger tube for two more parallels, connects.
3. double pipe heat exchanger according to claim 2, is characterized in that:
Also comprise the first sleeve pipe and the second sleeve pipe;
Described the first sleeve pipe is arranged on the end of the first heat exchanger tube of described inner tube, for connecting described current divider and described the first heat exchanger tube;
Described the second sleeve pipe is arranged on the end of described outer tube, and described the second sleeve pipe is used for connecting described outer tube and described the first heat exchanger tube;
The tube wall of described the second sleeve pipe is provided with through hole, and described through hole is used for the heat exchanging fluid that circulates.
4. double pipe heat exchanger according to claim 3, is characterized in that:
The junction of the junction of described current divider and described the first sleeve pipe and described the first heat exchanger tube and described the first sleeve pipe all adopts welded seal;
The junction of the junction of described outer tube and described the second sleeve pipe and described the first heat exchanger tube and described the second sleeve pipe also all adopts welded seal.
5. according to the double pipe heat exchanger described in claim 1 to 4 any one, it is characterized in that:
Described the first heat exchanger tube is multi-start helical tubes.
6. according to the double pipe heat exchanger described in claim 1 to 4 any one, it is characterized in that:
The cross sectional shape of described the first heat exchanger tube is track type.
7. according to the double pipe heat exchanger described in claim 1 to 4 any one, it is characterized in that:
Described outer tube and the inner tube being placed in described outer tube are laminated into track type, mosquito-repellent incense-shaped or cylindrical by bending.
8. according to the double pipe heat exchanger described in claim 1 to 4 any one, it is characterized in that:
Described heat-conducting medium is heat conductive silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376600.9A CN103697724B (en) | 2012-09-27 | 2012-09-27 | Double pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376600.9A CN103697724B (en) | 2012-09-27 | 2012-09-27 | Double pipe heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103697724A true CN103697724A (en) | 2014-04-02 |
| CN103697724B CN103697724B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210376600.9A Active CN103697724B (en) | 2012-09-27 | 2012-09-27 | Double pipe heat exchanger |
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| Country | Link |
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| CN (1) | CN103697724B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285563A (en) * | 2019-06-27 | 2019-09-27 | 海信（山东）空调有限公司 | A kind of air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201062928Y (en) * | 2007-07-11 | 2008-05-21 | 广东美的电器股份有限公司 | Double-walled double pipe heat exchanger |
| CN201181172Y (en) * | 2008-02-21 | 2009-01-14 | 广州泰菱科技研发有限公司 | Inner tube helical enhancement type casing tube heat exchanger |
| CN202274782U (en) * | 2011-09-21 | 2012-06-13 | 青岛奥利凯中央空调有限公司 | Novel telescopic heat exchanger |
| CN202902944U (en) * | 2012-09-27 | 2013-04-24 | 珠海格力电器股份有限公司 | Double-pipe heat exchanger |
-
2012
- 2012-09-27 CN CN201210376600.9A patent/CN103697724B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201062928Y (en) * | 2007-07-11 | 2008-05-21 | 广东美的电器股份有限公司 | Double-walled double pipe heat exchanger |
| CN201181172Y (en) * | 2008-02-21 | 2009-01-14 | 广州泰菱科技研发有限公司 | Inner tube helical enhancement type casing tube heat exchanger |
| CN202274782U (en) * | 2011-09-21 | 2012-06-13 | 青岛奥利凯中央空调有限公司 | Novel telescopic heat exchanger |
| CN202902944U (en) * | 2012-09-27 | 2013-04-24 | 珠海格力电器股份有限公司 | Double-pipe heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285563A (en) * | 2019-06-27 | 2019-09-27 | 海信（山东）空调有限公司 | A kind of air conditioner |
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| Publication number | Publication date |
|---|---|
| CN103697724B (en) | 2016-09-14 |
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