CN1403780A - Heat-transferring pipe - Google Patents
Heat-transferring pipe Download PDFInfo
- Publication number
- CN1403780A CN1403780A CN 02139463 CN02139463A CN1403780A CN 1403780 A CN1403780 A CN 1403780A CN 02139463 CN02139463 CN 02139463 CN 02139463 A CN02139463 A CN 02139463A CN 1403780 A CN1403780 A CN 1403780A
- Authority
- CN
- China
- Prior art keywords
- rib
- heat
- transfer pipe
- rifle nut
- miniature
- 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.)
- Granted
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides one kind of heat-transferring pipe for use in the condenser and evaporator of refrigerating equipment and air conditioning equipment with single or mixed refrigerant. In the inner surface of the heat-transferring pipe, there are miniature spiral ribs and the top of the miniature spiral rib has miniature protuberance formed in the top. The miniature protuberance have very small height and length equal to the length of the slot formed on the rib. When the refrigerant vapor or liquid film flows through the miniature spiral ribs, it is broken to form new boundary layer to reinforce heat exchange, raise the phase change heat transferring performance of refrigerating equipment and air conditioning equipment.
Description
One, technical field
The present invention relates to a kind of heat-transfer pipe, particularly a kind of refrigeration and the condenser of air-conditioning equipment and heat-transfer pipe in the evaporimeter that uses single and mix refrigerant.
Two, background technology
The present unitary system cryogen (as R22) that uses, and refrigeration and the condensation in the air-conditioner and the evaporation heat transfer pipe of mix refrigerant (as R407C or R410A), what majority used is the spiral grooved tube that inner face has little rib, the rib height of this helix tube internal-rib is less, the rib drift angle is bigger, the intercostal area of section is less in causing, and intercostal refrigerant liquid membrane flow difficulty is unfavorable for drawing thin liquid film.Cold-producing medium flows into heat-transfer pipe from inlet, flows out from outlet, and when heat-transfer pipe was used to evaporate, the refrigerant vapour concentration boundary layer of formation was unfavorable for evaporation and heat-exchange along the flow direction progressive additive; When heat-transfer pipe is used for condensation, the refrigerant liquid membrane boundary layer that forms is along the flow direction progressive additive, also be unfavorable for condensing heat-exchange, but spiral grooved tube is for light pipe, has heat transfer property (U.S. Patent number preferably, 4044797), after this many documents and the patent several characteristic parameter for internal-rib is arranged, as helical angle, the rib height, rib number etc. has carried out optimum organization (U.S. Patent number, 4658892), though obtained certain strengthening effect, failed making a breakthrough in essence at enhanced heat exchange.Also have patent to propose three-dimensional internal-rib helix tube (U.S. Patent number in addition, 5332034), three-dimensional internal-rib helix tube is made up of the spiral internal-rib of two positive and negative intersections, but three-dimensional internal-rib pipe processing difficulties, for heat-transfer pipe commonly used in the present room air conditioner, because heat-transfer pipe diameter less ( 12mm～ 4mm) generally adopts ratio-frequency welding to take over, the cost height is difficult to generally promote.
Three, summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of and can improve the heat transfer property of phase-change heat-exchange in refrigeration and the air-conditioning equipment, reduce to freeze and the volume of air-conditioning equipment the heat-transfer pipe of reduction product cost.
For achieving the above object, the solution that the present invention adopts is: be provided with the rifle nut rib that equally distributed height equates at the heat-transfer pipe inner face, be characterized in, the angle β of the tubular axis of rifle nut rib and heat-transfer pipe is 0～18 degree, and offer evenly distributed groove at the top of rifle nut rib, groove disconnects the sub-rib that has formed projection with the top of rifle nut rib, and the rib height of the sub-rib of projection is 0.02～0.06mm.
Another characteristics of the present invention are: the circumferential rib number of rifle nut rib is 50～70; The rib height of rifle nut rib is 0.15mm～0.3mm; The length of groove is 0.3mm～0.6mm; Angle theta is 0～10 degree between sub-rib and the rifle nut rib; The rib apex angle of rifle nut rib is 30～40 degree.
Because the present invention offers sub-rib on female rib, sub-rib disconnects female rib, and refrigerant vapour (evaporation) or liquid film (condensation) are when flowing through, and in sub-rib prominence, concentration or liquid film boundary layer are disconnected, and form new boundary layer, so can enhanced heat exchange.
Four, description of drawings
Fig. 1 is the cross-sectional view of heat-transfer pipe of the present invention.
Fig. 2 is the longitudinal section of heat-transfer pipe of the present invention.
Fig. 3 is the argument structure figure of female rib of heat-transfer pipe of the present invention.
Five, the specific embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Referring to Fig. 1, the present invention is provided with the rifle nut rib 1 that 50～70 equally distributed height equate at the heat-transfer pipe inner face, the rib height of this rifle nut rib 1 is 0.15～0.3mm, heat-transfer pipe for room air conditioner 7mm, the circumferential rib number of rifle nut rib 1 is 50～60, the rib height is 0.15～0.27mm, heat-transfer pipe for room air conditioner 9mm, the circumferential rib number of rifle nut rib 1 is 60～70, the rib height is 0.18～0.3mm, back down at the rib of rifle nut rib 1 that to be provided be the evenly distributed groove of 0.02～0.06mm 3 deeply, the length of groove 3 is 0.3～0.6mm.
Referring to Fig. 2, the angle between rifle nut rib 1 of the present invention and the heat-transfer pipe axis 2 is that helixangle is 0～18 degree, and the angle theta between rifle nut rib 1 and the sub-rib 4 is 0～10 degree.
Referring to Fig. 3, the rib apex angle of rifle nut rib 1 is 30～40 degree in the present invention.
The present invention carries out under synergistic principle on the scene instructs.The field synergistic principle will have the mechanism of three enhanced heat exchanges now and unite in theory.The rib number of rifle nut rib 1 is very few, and the perturbation action of 1 pair of cold-producing medium of rifle nut rib is not obvious, and rifle nut rib 1 heat exchange area reduces.The rib number of rifle nut rib 1 is too much, though the internal-rib wet length increases, the intercostal area of section reduces, and the cold-producing medium liquid film is thickened, the cold-producing medium liquid film is in the intercostal flow difficulties, also be unfavorable for heat exchange, so, for the heat-transfer pipe of a certain yardstick, a best rib number is arranged, in the present invention's 7mm heat-transfer pipe that evaporimeter is commonly used in room air conditioner, female rib circumferential rib is counted N=50, the high H of rifle nut rib rib
p=0.24mm, wall thickness T
w=0.25mm, female rib rib apex angle=30 degree; For the 9mm heat-transfer pipe commonly used of condenser in the room air conditioner, female rib circumferential rib is counted N=65, wall thickness T
w=0.28mm, the high H of female rib rib
p=0.27mm, female rib rib apex angle=30 degree.Angle between rifle nut rib 1 and the heat-transfer pipe axis is helixangle=10 degree, under the common cold-producing medium flow velocity of room air conditioner, takes less relatively helical angle can significantly reduce the flow resistance of cold-producing medium in pipe, and don't can reduce the coefficient of heat transfer.Rifle nut rib 1 is taked the rib height higher slightly than common rib, and the intercostal area of section increases, and can draw thin liquid film better, the internal-rib heat exchange area also can increase, can increase to some extent flow resistance although it is so, but owing to taked less helical angle, so the interior flow resistance of pipe can not increase generally.And on rifle nut rib 1, also offer sub-rib 4, when refrigerant condenses, rifle nut rib 1 rib pushes up and rib circumferentially condenses, and liquid film is subjected to the thin effect of drawing of four sides and makes thickness of liquid film littler.And when cold-producing medium evaporated, sub-rib 4 can play the effect of the nucleus of boiling, had promoted the nuclear boiling effect.In addition, when refrigerant vapour or liquid film were introduced into rifle nut rib 1, because the existence of sub-rib 4 is arranged on the rifle nut rib 1, the boundary layer was disconnected, and formed new boundary layer from the projecting end of each sub-rib 4, thus generally attenuate boundary layer thickness.
Claims (6)
1, a kind of heat-transfer pipe, be provided with the rifle nut rib [1] that equally distributed height equates at the heat-transfer pipe inner face, it is characterized in that: rifle nut rib [1] is 0～18 degree with the angle β of the tubular axis [2] of heat-transfer pipe, and offer evenly distributed groove [3] at the top of rifle nut rib [1], groove [3] disconnects the sub-rib [4] that has formed projection with the top of rifle nut rib [1], and the rib height of the sub-rib of projection [4] is 0.02～0.06mm.
2, heat-transfer pipe according to claim 1 is characterized in that: the circumferential rib number of said rifle nut rib [1] is 50～70.
3, heat-transfer pipe according to claim 1 is characterized in that: the rib of said rifle nut rib [1] is high to be 0.15mm～0.3mm.
4, heat-transfer pipe according to claim 1 is characterized in that: the length of said groove [3] is 0.3mm～0.6mm.
5, heat-transfer pipe according to claim 1 is characterized in that: angle theta is 0～10 degree between sub-rib [4] and the rifle nut rib [1].
6, heat-transfer pipe according to claim 1 is characterized in that: the rib apex angle of said rifle nut rib [1] is 30～40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139463 CN1267692C (en) | 2002-10-11 | 2002-10-11 | Heat-transferring pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139463 CN1267692C (en) | 2002-10-11 | 2002-10-11 | Heat-transferring pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403780A true CN1403780A (en) | 2003-03-19 |
| CN1267692C CN1267692C (en) | 2006-08-02 |
Family
ID=4750095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139463 Expired - Fee Related CN1267692C (en) | 2002-10-11 | 2002-10-11 | Heat-transferring pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1267692C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197753A (en) * | 2014-09-18 | 2014-12-10 | 苏州新太铜高效管有限公司 | Heat exchanging tube for condenser |
| CN106767099A (en) * | 2016-12-20 | 2017-05-31 | 江苏萃隆精密铜管股份有限公司 | A kind of efficient heat conducting tube of inner surface enhanced type |
| WO2019080887A1 (en) * | 2017-10-27 | 2019-05-02 | 中国石油化工股份有限公司 | Enhanced heat transfer pipe, and pyrolysis furnace and atmospheric and vacuum heating furnace comprising same |
| CN109724447A (en) * | 2017-10-27 | 2019-05-07 | 中国石油化工股份有限公司 | Augmentation of heat transfer pipe |
-
2002
- 2002-10-11 CN CN 02139463 patent/CN1267692C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197753A (en) * | 2014-09-18 | 2014-12-10 | 苏州新太铜高效管有限公司 | Heat exchanging tube for condenser |
| CN106767099A (en) * | 2016-12-20 | 2017-05-31 | 江苏萃隆精密铜管股份有限公司 | A kind of efficient heat conducting tube of inner surface enhanced type |
| WO2019080887A1 (en) * | 2017-10-27 | 2019-05-02 | 中国石油化工股份有限公司 | Enhanced heat transfer pipe, and pyrolysis furnace and atmospheric and vacuum heating furnace comprising same |
| CN109724447A (en) * | 2017-10-27 | 2019-05-07 | 中国石油化工股份有限公司 | Augmentation of heat transfer pipe |
| CN109724447B (en) * | 2017-10-27 | 2021-02-05 | 中国石油化工股份有限公司 | Reinforced heat transfer pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1267692C (en) | 2006-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080141708A1 (en) | Space-Saving Multichannel Heat Exchanger | |
| CN103148644B (en) | Microchannel falling-film evaporating condenser | |
| CN103842760B (en) | Heat exchanger and use the refrigerating circulatory device of this heat exchanger | |
| CN107110568A (en) | The collapsible micro-channel heat exchanger of many plates of multi-path | |
| CN102692101A (en) | Heat exchanger and air conditioner equipment | |
| CN106524594A (en) | Coil pipe type heat exchanger | |
| CN1200243C (en) | Internal thread heat-transferring pipe | |
| CN202647990U (en) | Double-pole and double-condensation air conditioner | |
| CN113654132B (en) | Heat pump unit | |
| CN1267692C (en) | Heat-transferring pipe | |
| CN201589465U (en) | Variable-channel mixed flow heat exchanger | |
| CN2570726Y (en) | Heat-transfer pipe | |
| CN209744774U (en) | Heat exchanger, heat exchange assembly and heat exchange system | |
| CN217584650U (en) | Dehumidifier | |
| CN217441820U (en) | Dehumidifier | |
| CN217584651U (en) | Dehumidifier | |
| CN217584649U (en) | Dehumidifier | |
| CN209042813U (en) | Falling-film heat exchanger and air-conditioner set | |
| CN2596307Y (en) | Internal screw heat transfer tube | |
| CN201795645U (en) | Novel evaporation type parallel flow heat exchanger and air conditioner employing same | |
| CN103925737A (en) | Air conditioner system with evaporation type condenser | |
| CN211625782U (en) | A liquid drop evaporation plant and cooling water set for cooling water set | |
| CN1621773A (en) | Fin type heat exchanger | |
| CN108775825B (en) | Heat exchange assembly and refrigerating system with same | |
| CN208720562U (en) | A kind of low circumstance temperature air source heat pump system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20060802 Termination date: 20121011 |