CN205079499U - Double pipe heat exchanger with spiral inner tube - Google Patents
Double pipe heat exchanger with spiral inner tube Download PDFInfo
- Publication number
- CN205079499U CN205079499U CN201520819891.3U CN201520819891U CN205079499U CN 205079499 U CN205079499 U CN 205079499U CN 201520819891 U CN201520819891 U CN 201520819891U CN 205079499 U CN205079499 U CN 205079499U
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- CN
- China
- Prior art keywords
- pipe
- outer tube
- refrigerant
- heat exchanger
- interior
- 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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Abstract
The utility model discloses double pipe heat exchanger is used for supplying first refrigerant and second refrigerant to flow through with the refrigeration, double pipe heat exchanger include outer tube, equipment a plurality of inner tubes and the equipment in the outer tube at outer tube opposite ends's a pair of sleeve pipe, a pair of sleeve pipe is equipped with the mouth -piece respectively, has the clearance between inner tube and the coaxial setting of outer tube and the two, the second refrigerant flows in the clearance between inner tube and the outer tube and flows from another mouth -piece from one of them mouth -piece, the inner tube flows through including the first refrigerant of through -hole confession that runs through, the pipe wall of inner tube is wave type structure, including a plurality of parallel arrangement's bulge, be located a plurality of first recess between the bulge and be located the inside second recess of bulge, a plurality of inner tubes respectively around the center pin winding of outer tube together, and have the clearance between two adjacent inner tubes, first refrigerant along the second recess helicoidal flow of inner tube, second refrigerant along the first recess helicoidal flow of inner tube, the mobile opposite direction of first refrigerant and second refrigerant.
Description
[technical field]
The utility model relates to a kind of double pipe heat exchanger with pipe in spiral, particularly relates to a kind of double pipe heat exchanger with pipe in segmented screw thread for freezing.
[background technology]
At present, double pipe heat exchanger is with excellent heat transfer property and high performance-price ratio, and the nearly more than ten years are developed rapidly in China, is mainly used in the fields such as power plant, handpiece Water Chilling Units, heat pump, food and medicine refrigeration.For heat exchanger, it is more its heat exchange efficiency that people pay close attention to, Master Cost, processing difficulty, service life etc.In order to consider the performance of heat exchanger, known coaxial sleeve heat exchanger is made up of overcoat light pipe and some interior pipes, and some interior pipes be arranged in parallel and are closely set with outer tube, and coaxially.Although heat exchange property increases than with the light pipe under condition, this type of heat exchanger is still not so good as other heat exchangers high (such as plate type heat exchanger) on heat exchange efficiency.In addition, this type of heat exchanger, when using as evaporimeter, heat exchange efficiency is lower.
Given this, the necessary double pipe heat exchanger providing a kind of improvement, to overcome the defect that prior art exists.
[utility model content]
The purpose of this utility model is to provide a kind of double pipe heat exchanger with pipe in spiral improving heat exchange efficiency.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: a kind of double pipe heat exchanger with pipe in spiral, for flowing through to freeze for the first cold-producing medium and second refrigerant, described double pipe heat exchanger comprises outer tube, be assembled in the some interior pipe in outer tube and be assembled in a pair sleeve pipe of outer tube opposite end, a pair sleeve pipe is respectively equipped with mouthpiece, interior pipe and outer coaxial tube arrange and have gap therebetween, described second refrigerant flows into the gap between described interior pipe and outer tube from one of them mouthpiece and flows out from another mouthpiece, described interior pipe comprises the through hole run through and flows through for the first cold-producing medium, the tube wall of interior pipe is Wave-shaped structural, comprise some protuberances be arranged in parallel, some first grooves between protuberance and be positioned at the second groove of protuberance inside, some interior pipes are intertwined around the central shaft of outer tube respectively, and between adjacent two interior pipes, there is gap, first cold-producing medium is along the second groove coil flowing of interior pipe, second refrigerant is along the first groove coil flowing of interior pipe, first cold-producing medium is contrary with the flow direction of second refrigerant.
The utility model defines further, and the angle between described interior pipe and the central shaft of outer tube is less than or equal to 45 degree for being more than or equal to 10 degree.
The utility model defines further, and described interior pipe is copper pipe.
The utility model defines further, and described outer tube is steel pipe.
The utility model defines further, the tube wall of described outer tube is Wave-shaped structural, comprise some scale portions be arranged in parallel and the some groove portions being positioned at inside, scale portion, some scale portions extend spirally around the central shaft of outer tube, and second refrigerant is along groove portion helical flow.
Compared with correlation technique, in the utility model double pipe heat exchanger utilizes, the first groove of pipe and the second groove and interior circumference of cannon bone carry out the guide effect be wound around around the central shaft of outer tube, the screw of the first cold-producing medium of pipe and the second refrigerant between interior pipe and outer tube in strengthening, and then with the fluid of axially-movable, violent eddy current occurs and mix, the ability in the inside and outside thinning and destruction boundary layer of pipe in strengthening, both space is made full use of like this, increase heat exchange area, enhance the coefficient of heat transfer again, in addition, because the first cold-producing medium is contrary with second refrigerant flow direction, the heat exchange area of the coefficient of heat transfer and unit volume increases, no matter so this double pipe heat exchanger is as condenser or as evaporimeter, heat exchange property is outstanding equally.
[accompanying drawing explanation]
Fig. 1 is the stereogram of the utility model double pipe heat exchanger.
Fig. 2 is the stereogram of the interior pipe of the utility model double pipe heat exchanger.
Fig. 3 is the left view of the double pipe heat exchanger shown in Fig. 2.
Fig. 4 is the stereogram of the outer tube of the utility model double pipe heat exchanger.
Fig. 5 is the interior pipe of the utility model double pipe heat exchanger and the assembly drawing of outer tube.
[detailed description of the invention]
As shown in Figures 1 to 5, the utility model has the double pipe heat exchanger of pipe in spiral for flowing through to freeze for the first cold-producing medium and second refrigerant, and described double pipe heat exchanger comprises some interior pipes 1, is positioned at the outer tube 2 of some pipe 1 peripheries, a pair sleeve pipe 3 be welded on outer tube 2.Between interior pipe 1 and outer tube 2, there is gap, flow through for second refrigerant.
Interior pipe 1 comprises the through hole 10 run through and flows through for the first cold-producing medium.The tube wall of interior pipe 1 is Wave-shaped structural, comprises the some protuberance 11, some first grooves 12 between protuberance 11 that be arranged in parallel and is positioned at the second groove 13 of protuberance 11 inside.Some interior pipes 1 are intertwined around the central shaft of outer tube 2 respectively, and have gap between adjacent two interior pipes 1.Angle between described interior pipe 1 and the central shaft of outer tube 2 is less than or equal to 45 degree for being more than or equal to 10 degree.First cold-producing medium is contrary with the flow direction of second refrigerant.Interior pipe 1 is copper pipe.Because interior pipe is provided with some second grooves 13, the first cold-producing medium in interior pipe 2 can be spinned motion in the second groove 13, in addition because the central shaft of interior pipe 1 around outer tube 2 is intertwined, the first cold-producing medium in interior pipe 2 can also occur from screw in interior pipe 1, first fluid is so made to obtain double screw, produce more violent eddy current mixing whereby, strengthen ability that is thinning or destruction boundary layer, reduce thermal resistance, utilize space simultaneously, first fluid is fully contacted with second fluid, increases heat exchange area, strengthen heat exchange.
Outer tube 2 is light pipe or spirally corrugated tube, is provided with the accepting hole 21 run through.Some interior pipes 1 are housed in accepting hole 21.A pair sleeve pipe 3 is respectively equipped with mouthpiece 4, and second refrigerant flows into the gap between described interior pipe 1 and outer tube 2 from mouthpiece 4.Because interior pipe 1 is provided with some first grooves 12, second refrigerant can in the first groove 12 inside spin motion.The tube wall of outer tube 2 is Wave-shaped structural, comprises some scale portions 22 be arranged in parallel and the some groove portions 23 being positioned at inside, scale portion 22.Some scale portions 22 extend spirally around the central shaft of outer tube 2, and second refrigerant is along groove portion 23 helical flow.In the present embodiment, the quantity of interior pipe 1 is three, and the utility model is not limited thereto, and the quantity of interior pipe 1 can be arranged according to practical application.Outer tube 2 is steel pipe.
In the utility model double pipe heat exchanger utilizes, the first groove 12 of pipe 1 and the second groove 13 and interior pipe 1 carry out the guide effect be wound around around the central shaft of outer tube 2, the screw of the first cold-producing medium of pipe 1 and the second refrigerant between interior pipe 2 and outer tube 2 in strengthening, and then with the fluid of axially-movable, violent eddy current occurs and mix, the ability in the inside and outside thinning and destruction boundary layer of pipe 1 in strengthening, both space is made full use of like this, increase heat exchange area, enhance the coefficient of heat transfer again.In addition, because the first cold-producing medium is contrary with second refrigerant flow direction, the heat exchange area of the coefficient of heat transfer and unit volume increases, no matter so this double pipe heat exchanger is as condenser or as evaporimeter, heat exchange property is outstanding equally.
Should be understood that, the foregoing is only preferred forms of the present utility model, it not whole embodiments, the change of those of ordinary skill in the art by reading the utility model description to any equivalence that technical solutions of the utility model are taked, is claim of the present utility model and contains.
Claims (5)
1. one kind has the double pipe heat exchanger of pipe in spiral, for flowing through to freeze for the first cold-producing medium and second refrigerant, described double pipe heat exchanger comprises outer tube, be assembled in the some interior pipe in outer tube and be assembled in a pair sleeve pipe of outer tube opposite end, a pair sleeve pipe is respectively equipped with mouthpiece, interior pipe and outer coaxial tube arrange and have gap therebetween, described second refrigerant flows into the gap between described interior pipe and outer tube from one of them mouthpiece and flows out from another mouthpiece, it is characterized in that: described interior pipe comprises the through hole run through and flows through for the first cold-producing medium, the tube wall of interior pipe is Wave-shaped structural, comprise some protuberances be arranged in parallel, some first grooves between protuberance and be positioned at the second groove of protuberance inside, some interior pipes are intertwined around the central shaft of outer tube respectively, and between adjacent two interior pipes, there is gap, first cold-producing medium is along the second groove coil flowing of interior pipe, second refrigerant is along the first groove coil flowing of interior pipe, first cold-producing medium is contrary with the flow direction of second refrigerant.
2. there is the double pipe heat exchanger of pipe in spiral as claimed in claim 1, it is characterized in that: the angle between described interior pipe and the central shaft of outer tube is less than or equal to 45 degree for being more than or equal to 10 degree.
3. there is the double pipe heat exchanger of pipe in spiral as claimed in claim 1, it is characterized in that: described interior pipe is copper pipe.
4. there is the double pipe heat exchanger of pipe in spiral as claimed in claim 1, it is characterized in that: described outer tube is steel pipe.
5. there is the double pipe heat exchanger of pipe in spiral as claimed in claim 1, it is characterized in that: the tube wall of described outer tube is Wave-shaped structural, comprise some scale portions be arranged in parallel and the some groove portions being positioned at inside, scale portion, some scale portions extend spirally around the central shaft of outer tube, and second refrigerant is along groove portion helical flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520819891.3U CN205079499U (en) | 2015-10-20 | 2015-10-20 | Double pipe heat exchanger with spiral inner tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520819891.3U CN205079499U (en) | 2015-10-20 | 2015-10-20 | Double pipe heat exchanger with spiral inner tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205079499U true CN205079499U (en) | 2016-03-09 |
Family
ID=55431903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520819891.3U Expired - Fee Related CN205079499U (en) | 2015-10-20 | 2015-10-20 | Double pipe heat exchanger with spiral inner tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205079499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319717A (en) * | 2019-06-25 | 2019-10-11 | 广东粤东机械实业有限公司 | A kind of UHT sterilization heat exchanger tube |
-
2015
- 2015-10-20 CN CN201520819891.3U patent/CN205079499U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319717A (en) * | 2019-06-25 | 2019-10-11 | 广东粤东机械实业有限公司 | A kind of UHT sterilization heat exchanger tube |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20181020 |