CN2831020Y - U-shape heat exchange tube for refrigerating - Google Patents
U-shape heat exchange tube for refrigerating Download PDFInfo
- Publication number
- CN2831020Y CN2831020Y CN 200520076293 CN200520076293U CN2831020Y CN 2831020 Y CN2831020 Y CN 2831020Y CN 200520076293 CN200520076293 CN 200520076293 CN 200520076293 U CN200520076293 U CN 200520076293U CN 2831020 Y CN2831020 Y CN 2831020Y
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- heat exchanger
- pipe
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Abstract
The utility model discloses a U-shaped heat exchanging pipe for refrigeration, particularly an integral hollow structure composed of a straight pipe section of an inlet side, a straight pipe section of an outlet side and a bending pipe section connecting the two straight pipe sections. The utility model is characterized in that an entire heat exchanging pipe comprises a thin pipe section and a thick pipe section. The inner diameter of the thin pipe section is 50% to 90% of the inner diameter of the thick pipe section and the length is 30% to 45% of the length of the entire U-shaped heat exchanging pipe. The thick pipe section and the thin pipe section are smoothly connected into an integral structure by a pipe enlarging section. The thin pipe section is positioned on the inlet part of the straight pipe section of the inlet side. The utility model enables a flow speed to be reduced to the speed under 1/4 of the pipe with the same diameter in order to solve the problem that flowing resistance is increased and also copper material can be saved by about 15%.
Description
Technical field
The utility model relates to a kind of heat exchanger, is specifically related to a kind of heat exchanger tube that uses in the heat exchanger of air-conditioning refrigeration system.
Background technology
In the prior art, in some air-conditioning refrigeration systems, consider the volume of heat exchanger, can adopt U type heat exchanger tube.Usually, U type heat exchanger tube is a hollow pipe, is made of inlet side straight length, outlet side straight length and the bend loss that is connected two straight lengths, and each caliber unanimity is structure as a whole.
Yet when reality was used, in dry evaporator, cold-producing medium evaporated in heat exchanger tube, generally speaking, was full of liquid refrigerant in about 1/3 pipe range, was full of vapour, liquid binary states cold-producing medium in 1/3 pipe range, was full of vaporized refrigerant in 1/3 pipe range.Under certain pressure, the volume of gaseous refrigerant will be tens times of liquid refrigerant volume, so, when adopting the U type pipe of above-mentioned caliber unanimity, after cold-producing medium flashes to steam state fully, the flow velocity in the pipe will rise significantly, cause flow resistance to increase considerably, heat exchange effect is reduced.
On the other hand, among the Machinery Ministry standard JB/T4750-2003 " refrigerating plant pressure vessel ", pore to the tube sheet place passes through to show E.4 and formula (E.3) from tubesheet intensity and rigidity aspect at interval, (E.4), (E.5) made clearly regulation, thereby pore at interval can not be too small, otherwise can have influence on the normal use of heat exchanger.Like this, need to keep certain spacing between heat exchanger tube, thereby the volume of heat exchanger is difficult to further reduce.
Summary of the invention
The utility model purpose provides a kind of cooling U type heat exchanger tube, to solve the problem that the vaporized refrigerant flow resistance increases in the pipe, reduces the volume of heat exchanger simultaneously.
For achieving the above object, the technical solution adopted in the utility model is: a kind of cooling U type heat exchanger tube, be the one hollow-core construction that constitutes by inlet side straight length, outlet side straight length and the bend loss that is connected two straight lengths, whole heat exchanger tube comprises tubule section and extra heavy pipe section, the internal diameter of tubule section is 50% to 90% of an extra heavy pipe section internal diameter, length is 30% to 40% of whole U type heat exchanger tube length, extra heavy pipe section and tubule are intersegmental by the smooth structure that links into an integrated entity of expander section, and the tubule section is positioned at the inlet part of inlet side straight length.
Further technical scheme, the pipe end place of described outlet side straight length is connected with contraction section, and the external diameter of contraction section is 50% to 90% of an extra heavy pipe section external diameter, stretches out the length of tube sheet and the summation of tube plate thickness when length is installed greater than heat exchanger tube.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1. connect and compose by extra heavy pipe section and tubule section owing to inlet side straight length of the present utility model, the length of tubule section is 30% to 40% of whole U type heat exchanger tube length, when the cold-producing medium of liquid state flashes to steam state, the tube section area increases, make flow velocity drop to below 1/4 of indentical tube, thereby solved the problem that flow resistance increases.
2. the utility model is provided with contraction section at the pipe end place of outlet side straight length (extra heavy pipe), aperture on tube sheet reduces, thereby satisfying equally under the pore condition at interval, adopting heat exchanger of the present utility model can reduce spacing between heat exchanger tube, thereby reduce whole heat exchanger volume.
3. in the air-conditioning of identical refrigerating capacity, use reducing U type pipe of the present utility model can save copper material about 15%.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment one;
Wherein: [1], inlet side straight length; [2], outlet side straight length; [3], bend loss; [4], contraction section; [5], expander section.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 1, a kind of cooling U type heat exchanger tube, be the one hollow-core construction that constitutes by inlet side straight length 1, outlet side straight length 2 and the bend loss 3 that is connected two straight lengths, whole heat exchanger tube comprises tubule section and extra heavy pipe section, the internal diameter of tubule section is 6.0 millimeters, the internal diameter of extra heavy pipe section is 8.72 millimeters, the length of tubule section is 120 centimetres, the length of whole U type heat exchanger tube is 290 centimetres, extra heavy pipe section and tubule are intersegmental by the expander section 5 smooth structures that link into an integrated entity, and the tubule section is positioned at the inlet part of inlet side straight length 1.The pipe end place of described outlet side straight length 2 is connected with contraction section 4, and the external diameter of contraction section 4 is 50% to 90% of an extra heavy pipe section external diameter, stretches out the length of tube sheet and the summation of tube plate thickness when length is installed greater than heat exchanger tube.
Embodiment two: a kind of cooling U type heat exchanger tube, be the one hollow-core construction that constitutes by inlet side straight length, outlet side straight length and the bend loss that is connected two straight lengths, whole heat exchanger tube comprises tubule section and extra heavy pipe section, the internal diameter of tubule section is 50% to 90% of an extra heavy pipe section internal diameter, length is 30% to 45% of whole U type heat exchanger tube length, extra heavy pipe section and tubule are intersegmental by the smooth structure that links into an integrated entity of expander section, and the tubule section is positioned at the inlet part of inlet side straight length.
Claims (2)
1. cooling U type heat exchanger tube, be the one hollow-core construction that constitutes by inlet side straight length [1], outlet side straight length [2] and the bend loss that is connected two straight lengths [3], it is characterized in that: whole heat exchanger tube comprises tubule section and extra heavy pipe section, the internal diameter of tubule section is 50% to 90% of an extra heavy pipe section internal diameter, length is 30% to 45% of whole U type heat exchanger tube length, extra heavy pipe section and tubule are intersegmental by the smooth structure that links into an integrated entity of expander section [5], and the tubule section is positioned at the inlet part of inlet side straight length [1].
2. cooling U type heat exchanger tube according to claim 1, it is characterized in that: the pipe end place of described outlet side straight length [1] is connected with contraction section [4], the external diameter of contraction section [4] is 50% to 90% of an extra heavy pipe section external diameter, stretches out the length of tube sheet and the summation of tube plate thickness when length is installed greater than heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520076293 CN2831020Y (en) | 2005-10-08 | 2005-10-08 | U-shape heat exchange tube for refrigerating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520076293 CN2831020Y (en) | 2005-10-08 | 2005-10-08 | U-shape heat exchange tube for refrigerating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831020Y true CN2831020Y (en) | 2006-10-25 |
Family
ID=37135948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520076293 Expired - Fee Related CN2831020Y (en) | 2005-10-08 | 2005-10-08 | U-shape heat exchange tube for refrigerating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831020Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445100A (en) * | 2011-12-21 | 2012-05-09 | 天津商业大学 | Heat exchange tube unit, finned tube air-cooled condenser and cooling air evaporator |
| CN104075495A (en) * | 2013-03-26 | 2014-10-01 | 珠海格力电器股份有限公司 | Air conditioner and finned heat exchanger |
| CN104654876A (en) * | 2015-03-05 | 2015-05-27 | 苏州市凯业金属制品有限公司 | Corrosion-resistant U-shaped tube |
| CN106403656A (en) * | 2016-09-23 | 2017-02-15 | 长沙学院 | Low-gas-oil-ratio raw oil heater and welding method for same |
-
2005
- 2005-10-08 CN CN 200520076293 patent/CN2831020Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445100A (en) * | 2011-12-21 | 2012-05-09 | 天津商业大学 | Heat exchange tube unit, finned tube air-cooled condenser and cooling air evaporator |
| CN104075495A (en) * | 2013-03-26 | 2014-10-01 | 珠海格力电器股份有限公司 | Air conditioner and finned heat exchanger |
| CN104075495B (en) * | 2013-03-26 | 2016-10-05 | 珠海格力电器股份有限公司 | A kind of air-conditioner and finned heat exchanger thereof |
| CN104654876A (en) * | 2015-03-05 | 2015-05-27 | 苏州市凯业金属制品有限公司 | Corrosion-resistant U-shaped tube |
| CN106403656A (en) * | 2016-09-23 | 2017-02-15 | 长沙学院 | Low-gas-oil-ratio raw oil heater and welding method for same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 Termination date: 20131008 |