CN103225934B - Become profile of tooth internal thread enhanced tube condenser - Google Patents
Become profile of tooth internal thread enhanced tube condenser Download PDFInfo
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- CN103225934B CN103225934B CN201310120745.7A CN201310120745A CN103225934B CN 103225934 B CN103225934 B CN 103225934B CN 201310120745 A CN201310120745 A CN 201310120745A CN 103225934 B CN103225934 B CN 103225934B
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Abstract
The present invention relates to and a kind of become profile of tooth internal thread enhanced tube condenser, feature is the fin comprising the first paragraph pipe of more than two, the second segment pipe of more than two, the connecting bend of more than three and more than two; Evenly be provided with the tooth bar of more than three in the axis of first paragraph inside pipe wall, tooth bar is in spiral distribution; The length of second segment pipe is identical with the length of first paragraph pipe, and be evenly provided with the tooth bar of more than three in the axis of second segment inside pipe wall, tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe and the tooth bar number of second segment pipe is 1-1.5, and the ratio range of the gear rack helix angle of first paragraph pipe and the gear rack helix angle of second segment pipe is 0.5-1; By flow of refrigerant direction connecting bend, adjacent two sections of pipes are communicated with; Every sheet fin is set on all first paragraph pipes and second segment pipe.Its advantage is: cold-producing medium is in the whole heat transfer process of condenser, and different phase adopts the thermoexcell of dissimilar tooth form, makes the overall heat exchange best results of condenser, thus improves performance of refrigerant systems.
Description
Technical field
Patent of the present invention relates to a kind of refrigeration system enhanced heat exchange technology, especially the change profile of tooth internal thread enhanced tube condenser of air-conditioner condenser enhanced heat exchange technology.
Background technology
Condenser is one of critical component of refrigeration system, larger on the impact of refrigeration plant overall performance.For improving condenser heat transfer effect, reduce its material consumption, inner screw thread copper pipe is widely used in condenser of refrigeration equipment.For improving heat transfer effect, each inner screw thread copper pipe manufacturing enterprise develops the inner screw thread copper pipe of multiple profile of tooth, but general principle be exactly increase intraductal heat exchange area, reinforced pipe inner refrigerant turbulent flow and accelerate condensed fluid discharge opeing.No matter current condenser adopts the inner screw thread copper pipe of which kind of profile of tooth, but all adopts the inner screw thread copper pipe of same profile of tooth in same condenser, and the profile of tooth of its inner screw thread copper pipe is based on cold-producing medium condensation heat transfer strengthening mechanism consideration within the condenser.But in fact, cold-producing medium heat exchange is within the condenser divided into three phases, and the first stage is overheated gas cooling stage, it is single gas phase heat exchange; Second stage is condensation phase, is gas-liquid two-phase condensing heat-exchange; Phase III is it's the cold stage that pasts liquid, is single liquid phase heat exchange.Because the enhanced heat exchange mechanism of gas phase heat exchange, gas-liquid two-phase condensing heat-exchange and liquid phase heat exchange three is different, gas phase enhanced heat exchange mainly reinforced pipe inner refrigerant turbulent flow, increase heat exchange area and reduce flow resistance, and liquid phase enhanced heat exchange mainly reinforced pipe inner refrigerant turbulent flow and improve refrigerant flow rates, obviously this three phases all adopt a kind of inner screw thread copper pipe of profile of tooth to carry out heat transfer effect that enhanced heat exchange can not realize condenser the best.
Summary of the invention
The object of this invention is to provide a kind of change profile of tooth internal thread enhanced tube condenser, the internal thread enhanced tube of dissimilar tooth form is adopted respectively through three heat exchange stages of heat exchanger in flow of refrigerant, with the heat transfer effect making whole condenser reach best, thus improve performance of refrigerant systems.
In order to achieve the above object, a kind of technical scheme of the present invention is, it is a kind of change profile of tooth internal thread enhanced tube condenser, it is characterized in that comprising:
The first paragraph pipe of more than two, be evenly provided with the tooth bar of more than three in the axis of described first paragraph inside pipe wall, described tooth bar is in spiral distribution;
The second segment pipe of more than two, the length of described second segment pipe is identical with the length of first paragraph pipe, and be evenly provided with the tooth bar of more than three in the axis of second segment inside pipe wall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe and the tooth bar number of second segment pipe is 4/3-1.5, and the ratio range of the gear rack helix angle of first paragraph pipe and the gear rack helix angle of second segment pipe is 0.5-0.6;
Adjacent two sections of pipes are communicated with by connecting bend described in flow of refrigerant direction by the connecting bend of more than three; With
The fin of more than two, every sheet fin is set on all first paragraph pipes and second segment pipe.
The radical of described first paragraph pipe and the radical ratio range of second segment pipe are 1/6-3/5.
Described first paragraph pipe is all equal with internal diameter with the external diameter of second segment pipe.
The external diameter of described first paragraph pipe is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe is 0.2mm, and tooth bar number is 80, and the helical angle of tooth bar is 15 °, and addendum angle is 25 °; The external diameter of described second segment pipe is 9.52mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe is 0.2mm, and tooth bar number is 60, and helical angle is 25 °, and addendum angle is 25 °.
In order to achieve the above object, another kind of technical scheme of the present invention is, it is a kind of change profile of tooth internal thread enhanced tube condenser, it is characterized in that comprising:
The first paragraph pipe of more than two, be evenly provided with the tooth bar of more than three in the axis of described first paragraph inside pipe wall, described tooth bar is in spiral distribution;
The second segment pipe of more than two, the length of described second segment pipe is identical with the length of first paragraph pipe, and be evenly provided with the tooth bar of more than three in the axis of second segment inside pipe wall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe and the tooth bar number of second segment pipe is 10/9-1.5, and the ratio range of the gear rack helix angle of first paragraph pipe and the gear rack helix angle of second segment pipe is 0.5-0.75;
The 3rd section of pipe of more than two, the length of described 3rd section of pipe is identical with the length of second segment pipe, and be evenly provided with the tooth bar of more than three articles in the axis of the 3rd section of inside pipe wall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of the tooth bar number of second segment pipe and the 3rd section of pipe is 1.2-1.5, and the ratio range of the gear rack helix angle of the gear rack helix angle of second segment pipe and the 3rd section of pipe is 0.5-0.8;
Adjacent two sections of pipes are communicated with by connecting bend described in flow of refrigerant direction by the connecting bend of more than three; With
The fin of more than two, every sheet fin is set on all first paragraph pipes, second segment pipe and the 3rd section of pipe.
The radical of described first paragraph pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section; The radical of second segment pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section; The radical of the 3rd section of pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section.
The external diameter of described first paragraph pipe, second segment pipe and the 3rd section of pipe is all equal with internal diameter.
The external diameter of described first paragraph pipe is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe is 0.2mm, and tooth bar number is 80, and the helical angle of tooth bar is 15 °, and addendum angle is 25 °; The external diameter of described second segment pipe is 9.52mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe is 0.2mm, and tooth bar number is 72, and helical angle is 20 °, and addendum angle is 25 °; The external diameter of described 3rd section of pipe 5 is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of the 3rd section of pipe is 0.2mm, and tooth bar number is 60, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °.
The present invention's advantage is compared with prior art: cold-producing medium is in the whole heat transfer process of condenser, and different phase adopts the thermoexcell of dissimilar tooth form, makes the overall heat exchange best results of condenser, thus improves performance of refrigerant systems.
Accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of the embodiment of the present invention one;
Fig. 2 is the axial sectional drawing of the first paragraph pipe of the embodiment of the present invention one;
Fig. 3 is that the partial left of Fig. 2 looks enlarged drawing;
Fig. 4 is the axial sectional drawing of the second segment pipe of the embodiment of the present invention one;
Fig. 5 is that the partial left of Fig. 4 looks enlarged drawing;
Fig. 6 is the assembly structure schematic diagram of the embodiment of the present invention two;
Fig. 7 is the axial sectional drawing of the first paragraph pipe of the embodiment of the present invention two;
Fig. 8 is that the partial left of Fig. 7 looks enlarged drawing;
Fig. 9 is the axial sectional drawing of the second segment pipe of the embodiment of the present invention two;
Figure 10 is that the partial left of Fig. 9 looks enlarged drawing;
Figure 11 is the axial sectional drawing of the 3rd section of pipe of the embodiment of the present invention two;
Figure 12 is that the partial left of Figure 11 looks enlarged drawing.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and in figure, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In description of the present utility model, term " first ", " second " and " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
embodiment one
As shown in Fig. 1 to 5, it is a kind of change profile of tooth internal thread enhanced tube condenser, comprises the second segment pipe 4 of connecting bend more than 3, two and the fin 2 of more than two of the first paragraph pipe more than 1, three of more than two; Wherein evenly be provided with the tooth bar of more than three in the axis of described first paragraph pipe 1 inwall, described tooth bar is in spiral distribution; The length of described second segment pipe 4 is identical with the length of first paragraph pipe 1, and be evenly provided with the tooth bar of more than three in the axis of second segment pipe 4 inwall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe 1 and the tooth bar number of second segment pipe 4 is 4/3-1.5, the ratio of the tooth bar number of first paragraph pipe 1 and the tooth bar number of second segment pipe 4 is 4/3 in the present embodiment, also can select the ratio of the tooth bar number of first paragraph pipe 1 and the tooth bar number of second segment pipe 4 according to actual needs within the limits prescribed; The ratio range of the gear rack helix angle of first paragraph pipe 1 and the gear rack helix angle of second segment pipe 4 is 0.5-0.6, the ratio of the gear rack helix angle of first paragraph pipe 1 and the gear rack helix angle of second segment pipe 4 is 0.6 in the present embodiment, also can select the ratio of the gear rack helix angle of first paragraph pipe 1 and the gear rack helix angle of second segment pipe 4 according to actual needs within the limits prescribed; By connecting bend 3 described in flow of refrigerant direction, adjacent two sections of pipes are communicated with; Every sheet fin 2 is set in all first paragraph pipes 1 with on second segment pipe 4.
During work, cold-producing medium enters from the entrance of the first paragraph pipe 1 of initial end, flows out from the outlet of the second segment pipe 4 of least significant end; After cold-producing medium completes gas phase enhanced heat transfer in first paragraph pipe 1, cold-producing medium in second segment pipe 4, complete second stage and the gas-liquid two-phase condensing heat-exchange in the phase III is strengthened and liquid phase enhanced heat transfer.
The radical of described first paragraph pipe 1 and the radical ratio range of second segment pipe 4 are 1/6-2/3; Be provided with three first paragraph pipes 1 and five second segment pipes 4 in the present embodiment, also can select the radical of first paragraph pipe 1 and second segment pipe 4 according to actual needs within the limits prescribed.
In the present embodiment, described first paragraph pipe 1 is all equal with internal diameter with the external diameter of second segment pipe 4.
In the present embodiment, the external diameter of described first paragraph pipe 1 is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe 1 is 0.2mm, and tooth bar number is 80, and the helical angle of tooth bar is 15 °, and addendum angle is 25 °; The external diameter of described second segment pipe 4 is 9.52mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe 4 is 0.2mm, and tooth bar number is 60, and helical angle is 25 °, and addendum angle is 25 °.
embodiment two
As shown in Fig. 6 to 12, it is a kind of change profile of tooth internal thread enhanced tube condenser, comprises the connecting bend 3 of the 3rd section of pipe more than 5, three and the fin 2 of more than two of the second segment pipe more than 4, two of the first paragraph pipe more than 1, two of more than two; Wherein evenly be provided with the tooth bar of more than three articles in the axis of the inwall of described first paragraph pipe 1, second segment pipe 4 and the 3rd section of pipe 5, described tooth bar is in spiral distribution; The identical length of described first paragraph pipe 1, second segment pipe 4 and the 3rd section of pipe 5 is same; The ratio range of the tooth bar number of described first paragraph pipe 1 and the tooth bar number of second segment pipe 4 is 10/9-1.5, the ratio of the tooth bar number of first paragraph pipe 1 and the tooth bar number of second segment pipe 4 is 10/9 in the present embodiment, also can select the ratio of the tooth bar number of first paragraph pipe 1 and the tooth bar number of second segment pipe 4 according to actual needs within the limits prescribed; The ratio range of the tooth bar number of the tooth bar number of described second segment pipe 4 and the 3rd section of pipe 5 is 1.2-1.5, the ratio of the tooth bar number of second segment pipe 4 and the tooth bar number of the 3rd section of pipe 5 is 6/5 in the present embodiment, also can select the ratio of the tooth bar number of second segment pipe 4 and the tooth bar number of the 3rd section of pipe 5 according to actual needs within the limits prescribed; The ratio range of the gear rack helix angle of first paragraph pipe 1 and the gear rack helix angle of second segment pipe 4 is 0.5-0.8, the ratio of the gear rack helix angle of the gear rack helix angle second segment pipe 4 of first paragraph pipe 1 is 3/4 in the present embodiment, also can select the ratio of the gear rack helix angle of the gear rack helix angle second segment pipe 4 of first paragraph pipe 1 according to actual needs within the limits prescribed; The ratio range of the gear rack helix angle of the gear rack helix angle of second segment pipe 4 and the 3rd section of pipe 5 is 0.5-1, the ratio of the gear rack helix angle of second segment pipe 4 and the gear rack helix angle of the 3rd section of pipe 5 is 4/5 in the present embodiment, also can select the ratio of the gear rack helix angle of second segment pipe 4 and the gear rack helix angle of the 3rd section of pipe 5 according to actual needs within the limits prescribed; Adjacent two sections of pipes are communicated with by flow of refrigerant direction by described connecting bend 3; Every sheet fin 2 is set on all first paragraph pipes 1, second segment pipe 4 and the 3rd pipeline section 5.
During work, cold-producing medium enters from the entrance of the first paragraph pipe 1 of initial end, flows out from the outlet of the 3rd section of pipe 5 of least significant end; Cold-producing medium enters in second segment pipe 4 complete gas phase cooling in first paragraph pipe 1 after and carries out gas-liquid two-phase condensation, declines, finally enter in the 3rd section of pipe 5 and continue condensation, all become refrigerant liquid and have necessarily excessively cold along flow of refrigerant direction cold-producing medium mass dryness fraction.
The radical of described first paragraph pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section, is 1/4 in the present embodiment; The radical of second segment pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section, is 1/2 in the present embodiment; The radical of the 3rd section of pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section, is 1/4 in the present embodiment.
In the present embodiment, the external diameter of described first paragraph pipe 1, second segment pipe 4 and the 3rd section of pipe 5 is all equal with internal diameter.
In the present embodiment, the external diameter of described first paragraph pipe 1 is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe 1 is 0.2mm, and tooth bar number is 80, and the helical angle of tooth bar is 15 °, and addendum angle is 25 °; The external diameter of described second segment pipe 4 is 9.52mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe 4 is 0.2mm, and tooth bar number is 72, and helical angle is 20 °, and addendum angle is 25 °; The external diameter of described 3rd section of pipe 5 is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of the 3rd section of pipe 5 is 0.2mm, and tooth bar number is 60, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and distortion to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (8)
1. become a profile of tooth internal thread enhanced tube condenser, it is characterized in that comprising:
The first paragraph pipe (1) of more than two, be evenly provided with the tooth bar of more than three in the axis of described first paragraph pipe (1) inwall, described tooth bar is in spiral distribution;
The second segment pipe (4) of more than two, the length of described second segment pipe (4) is identical with the length of first paragraph pipe (1), and be evenly provided with the tooth bar of more than three in the axis of second segment pipe (4) inwall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe (1) and the tooth bar number of second segment pipe (4) is 4/3-1.5, and the ratio range of the gear rack helix angle of first paragraph pipe (1) and the gear rack helix angle of second segment pipe (4) is 0.5-0.6;
Adjacent two sections of pipes are communicated with by connecting bend (3) described in flow of refrigerant direction by the connecting bend (3) of more than three; With
The fin (2) of more than two, every sheet fin (2) is set in all first paragraph pipes (1) with on second segment pipe (4).
2. change profile of tooth internal thread enhanced tube condenser according to claim 1, is characterized in that the radical of described first paragraph pipe (1) and the radical ratio range of second segment pipe (4) are 1/6-3/5.
3. change profile of tooth internal thread enhanced tube condenser according to claim 1, is characterized in that described first paragraph pipe (1) is all equal with internal diameter with the external diameter of second segment pipe (4).
4. the change profile of tooth internal thread enhanced tube condenser according to any one of claims 1 to 3, the external diameter that it is characterized in that described first paragraph pipe (1) is 9.52mm, pipe thickness is 0.25mm, the tooth bar height of first paragraph pipe (1) is 0.2mm, tooth bar number is 80, the helical angle of tooth bar is 15 °, and addendum angle is 25 °; The external diameter of described second segment pipe (4) is 9.52mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe (4) is 0.2mm, and tooth bar number is 60, and helical angle is 25 °, and addendum angle is 25 °.
5. become a profile of tooth internal thread enhanced tube condenser, it is characterized in that comprising:
The first paragraph pipe (1) of more than two, be evenly provided with the tooth bar of more than three in the axis of described first paragraph pipe (1) inwall, described tooth bar is in spiral distribution;
The second segment pipe (4) of more than two, the length of described second segment pipe (4) is identical with the length of first paragraph pipe (1), and be evenly provided with the tooth bar of more than three in the axis of second segment pipe (4) inwall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe (1) and the tooth bar number of second segment pipe (4) is 10/9-1.5, and the ratio range of the gear rack helix angle of first paragraph pipe (1) and the gear rack helix angle of second segment pipe (4) is 0.5-0.75;
The 3rd section of pipe (5) of more than two, the length of described 3rd section of pipe (5) is identical with the length of second segment pipe (4), and be evenly provided with the tooth bar of more than three articles in the axis of the 3rd section of pipe (5) inwall, described tooth bar is in spiral distribution; The tooth bar number of second segment pipe (4) and the 3rd section of ratio range of managing the tooth bar number of (5) are 1.2-1.5, and the gear rack helix angle of second segment pipe (4) and the 3rd section of ratio range of managing the gear rack helix angle of (5) are 0.5-0.8;
Adjacent two sections of pipes are communicated with by connecting bend (3) described in flow of refrigerant direction by the connecting bend (3) of more than three; With
The fin (2) of more than two, every sheet fin (2) is set on all first paragraph pipes (1), second segment pipe (4) and the 3rd section of pipe (5).
6. change profile of tooth internal thread enhanced tube condenser according to claim 5, is characterized in that the radical of described first paragraph pipe (1) accounts for the 1/10-2/3 of the total radical of whole pipeline section; The radical of second segment pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section; The radical of the 3rd section of pipe accounts for the 1/10-2/3 of the total radical of whole pipeline section.
7. change profile of tooth internal thread enhanced tube condenser according to claim 5, is characterized in that described first paragraph pipe (1), second segment pipe (4) and the 3rd section of external diameter of managing (5) are all equal with internal diameter.
8. the change profile of tooth internal thread enhanced tube condenser according to any one of claim 5 to 7, the external diameter that it is characterized in that described first paragraph pipe (1) is 9.52mm, pipe thickness is 0.25mm, the tooth bar height of first paragraph pipe (1) is 0.2mm, tooth bar number is 80, the helical angle of tooth bar is 15 °, and addendum angle is 25 °; The external diameter of described second segment pipe (4) is 9.52mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe (4) is 0.2mm, and tooth bar number is 72, and helical angle is 20 °, and addendum angle is 25 °; The external diameter of described 3rd section of pipe (5) is 9.52mm, and pipe thickness is 0.25mm, and the tooth bar height of the 3rd section of pipe 5 is 0.2mm, and tooth bar number is 60, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120745.7A CN103225934B (en) | 2013-04-09 | 2013-04-09 | Become profile of tooth internal thread enhanced tube condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120745.7A CN103225934B (en) | 2013-04-09 | 2013-04-09 | Become profile of tooth internal thread enhanced tube condenser |
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| Publication Number | Publication Date |
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| CN103225934A CN103225934A (en) | 2013-07-31 |
| CN103225934B true CN103225934B (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310120745.7A Active CN103225934B (en) | 2013-04-09 | 2013-04-09 | Become profile of tooth internal thread enhanced tube condenser |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879962B (en) * | 2015-05-20 | 2017-02-22 | 绥阳县华丰电器有限公司 | Adjustable cooler |
| CN111256211B (en) * | 2020-01-20 | 2021-11-26 | 海信（山东）空调有限公司 | Air conditioner |
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| CN85103367A (en) * | 1985-05-13 | 1986-12-24 | 日立电线株式会社 | Inner surface has the heat-transfer pipe of screw thread |
| CN1389702A (en) * | 2002-07-02 | 2003-01-08 | 西安交通大学 | Heat exchanger flow circuit arranging method and device |
| CN1616905A (en) * | 2003-09-29 | 2005-05-18 | 三电有限公司 | Overcold condenser |
| CN201081590Y (en) * | 2007-07-26 | 2008-07-02 | 上海龙阳精密复合铜管有限公司 | Thin-and-high tooth internal thread seamless high-efficiency heat transfer tube |
| CN101482348A (en) * | 2008-11-28 | 2009-07-15 | 滁州扬子必威中央空调有限公司 | Three segment type heat exchanger |
| CN201593893U (en) * | 2009-12-13 | 2010-09-29 | 海信（山东）空调有限公司 | Condenser of outdoor unit of air conditioner and outdoor unit mounted with same |
| CN203249435U (en) * | 2013-04-09 | 2013-10-23 | 顺德职业技术学院 | Variable-tooth-shaped internal thread strengthening tube condenser |
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2013
- 2013-04-09 CN CN201310120745.7A patent/CN103225934B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103367A (en) * | 1985-05-13 | 1986-12-24 | 日立电线株式会社 | Inner surface has the heat-transfer pipe of screw thread |
| CN1389702A (en) * | 2002-07-02 | 2003-01-08 | 西安交通大学 | Heat exchanger flow circuit arranging method and device |
| CN1616905A (en) * | 2003-09-29 | 2005-05-18 | 三电有限公司 | Overcold condenser |
| CN201081590Y (en) * | 2007-07-26 | 2008-07-02 | 上海龙阳精密复合铜管有限公司 | Thin-and-high tooth internal thread seamless high-efficiency heat transfer tube |
| CN101482348A (en) * | 2008-11-28 | 2009-07-15 | 滁州扬子必威中央空调有限公司 | Three segment type heat exchanger |
| CN201593893U (en) * | 2009-12-13 | 2010-09-29 | 海信（山东）空调有限公司 | Condenser of outdoor unit of air conditioner and outdoor unit mounted with same |
| CN203249435U (en) * | 2013-04-09 | 2013-10-23 | 顺德职业技术学院 | Variable-tooth-shaped internal thread strengthening tube condenser |
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