CN201803634U - Novel efficient heat exchange tube used for condenser of electric refrigerating unit - Google Patents
Novel efficient heat exchange tube used for condenser of electric refrigerating unit Download PDFInfo
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- CN201803634U CN201803634U CN2010205527973U CN201020552797U CN201803634U CN 201803634 U CN201803634 U CN 201803634U CN 2010205527973 U CN2010205527973 U CN 2010205527973U CN 201020552797 U CN201020552797 U CN 201020552797U CN 201803634 U CN201803634 U CN 201803634U
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- heat exchanger
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Abstract
The utility model discloses a novel efficient heat exchange tube used for a condenser of an electric refrigerating unit, which comprises a smooth tube (7), a fin section (9) and a transition section (8) provided with spiral fins; and the novel efficient heat exchange tube is characterized in that the spiral fins (2) extending spirally along the outer surface of a tube body are arranged outside the tube body (1) of the fin section (9), the diameter of the fins (2) is smaller than or equal to that of the smooth tube (7), the top part (2B) of the spiral fins (2) are thinner than the root part (2A), and the upper parts of two sides are smooth surfaces (3); and an inclined fin (4) is arranged at the middle part of each side, and an angle of 30 to 70 degrees is formed between each inclined fin (4) and the tube, the upper surface of each inclined fin (4) is a platform or an inclined surface, the sides are trapezoidal, and one side surface (4A) is larger than the other side surface (4B) opposite to the side surface (4A). As for the novel efficient heat exchange tube, the external condensation and heat exchange are improved, the discharging space of condensate is increased, is beneficial to discharging liquor condensate quickly and lengthening liquor condensate films, strengthens the turbulent flows in the tube, improves heat exchange in the tube, and obviously improves the overall heat exchanging efficiency.
Description
Technical field:
The utility model relates to the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser, relates in particular to the heat exchanger tube of a kind of enforcing condensation heat transfer and convection heat transfer' heat-transfer by convection, belongs to the heat-exchanging part technical field.
Background technology:
In field of Refrigeration and Air-conditioning, the energy consumption of electric refrigerating machine group mainly concentrates on compressor, condenser and the evaporimeter, the efficient of its condenser directly influences the energy consumption of whole system, what the form application of condenser was maximum is shell and tube exchanger, cold-producing medium is the heat convection of cooling water in the out-tubular condensing heat exchange in the pipe.Existing condenser pipe mainly is to be processed into fin by being machined into outer surface, and at fin top gear hobbing groove, forms sharp point by zigzag, promotes flowing of condensate liquid, is passing through space discharge opeing between fin.Because the heat exchanger tube of electric refrigerating machine group condenser, be in film condensation, increase with heat flow density, thickness of liquid film increases, especially tube bank is arranged, the condensate liquid on top drops on the lower tube, seriously increased the delay angle of liquid film, be unfavorable for draining of condensate liquid, the disclosed heat-exchange tube of Chinese patent 101004337A (application number 200710036470.3), horizontal fin between wing, because horizontal fin is on the same straight line between wing, is connected to each other, to the mobile generation resistance of condensate liquid, especially the bigger cold-producing medium of viscosity, heat exchange property reduces.
The utility model content:
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and provides a kind of electric refrigerating machine group condenser that can make obviously to improve with the outer surface and the condensation of refrigerant coefficient of heat transfer of pipe, the intraductal heat exchange performance is promoted significantly, improve the whole heat exchange efficiency of heat exchanger greatly, and at the new and effective heat exchanger tube of electric refrigerating machine group condenser that does not reduce can alleviate under the thick situation of diapire condenser weight.
The purpose of this utility model can reach by following measure: the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser, it comprises plain tube, the fin section, plain tube is provided with helical fin outward by body changeover portion is connected with the fin section, the body that it is characterized in that the fin section is provided with the helical fin that stretches along the outer surface of tube body spiral outward, the external diameter of fin is smaller or equal to the external diameter of plain tube, the top of helical fin is thin than root, the upper end of the two sides of helical fin is a shiny surface, the middle part of the two sides of helical fin be provided with tubular axis to be 30 to 70 the degree oblique wings, tiltedly the upper surface of wing is platform or inclined-plane, tiltedly the side of wing is trapezoidal, and tiltedly a side of wing is bigger than the area of another relative side.
In order further to realize the purpose of this utility model, the height h of described helical fin is 0.6～1.6mm, the spacing p of fin is 0.3～1.3mm, the thickness t at the top of fin is 0.05～0.3mm, the thickness w of the root of fin is 0.1～0.4mm, and the top of fin is than the thin 0.05～0.2mm of root.
In order further to realize the purpose of this utility model, the intersection of described helical fin and oblique wing is 0.05～0.5mm apart from the distance b of fin top, tiltedly the height a of wing is 0.3～0.6mm, tiltedly the long hem width degree c of wing is 0.15～0.5mm, minor face width d is 0.10～0.4mm, stagger mutually to adjacent oblique wing along tubular axis, tiltedly the circumferential wing of wing is 0.40～1.0mm apart from pe.
In order further to realize the purpose of this utility model, described helical fin top is provided with the circumferential teeth groove of sawtooth pattern, and the circumferential teeth groove of sawtooth pattern is 30～90 degree oblique angles with oblique wing.
In order further to realize the purpose of this utility model, the degree of depth e of described circumferential teeth groove is 0.05～0.4mm, and spacing pt is 0.4～1.0mm.
In order further to realize the purpose of this utility model, the inner surface of tube body of described fin section is provided with the spiral internal tooth, and the normal section of spiral internal tooth is a triangular form or trapezoidal, has groove on the spiral internal tooth.
In order to realize that further the purpose of this utility model, the helical angle of described spiral internal tooth are 30～50 degree, internal tooth head number is 6～60, profile angle 30～90 degree, and interior tooth depth hi is 0.2～0.5mm.
In order further to realize the purpose of this utility model, the helical angle of described groove and spiral internal tooth is 40 to be spent to an angle of 90 degrees, and depth of groove h1 is 1/5～2/3 of the interior tooth depth of spiral, and the normal direction spacing of groove is 0.5～2.0mm.
The utility model can produce following good effect compared with the prior art: the area of the outer fin of pipe of the present utility model obviously increases, compare with traditional condenser pipe, not that fin top is processed groove, but cut out oblique wing from the side, increased the area of fin top, the outer cusp that increases of pipe has been strengthened the performance of condensing heat-exchange and since be between fin increase be the oblique wings at 40 to 60 degree angles with tubular axis, the extension liquid ability at edge obviously weakens, and condensate liquid is drained fast along the direction of oblique wing.Fin top is thinner than root, the space at top is greater than the root space, increased the emission quotas of condensate liquid, the liquid holdup angle reduces, more help the condensate liquid quick fluid-discharge, intersection at oblique wing and fin forms new gradient, condensate liquid is elongated herein, condensate film attenuate between fin, reduced the condensation thermal resistance, especially on heat exchanger, the condensate stream that the condenser pipe on top produces is to the condenser pipe of bottom, and the pipe of bottom must be drained a large amount of condensate liquids fast, there is more delay liquid in the tradition condenser pipe, the shared whole circumference ratio of delay of condensate liquid is very big on the pipe circumference, thus the heat exchange poor effect of whole tube bank, this special structure of the utility model, exactly can be good at improving this situation, thereby improve the heat exchange effect of complete machine, the more traditional condenser pipe of heat exchange property improves more than 10～20%, and the more traditional condenser pipe of external surface area increase improves 10%～20% simultaneously.And the spiral internal tooth is set in the pipe, has increased disturbance, reduced the thickness in boundary layer, can be issued to turbulent flow at less flow velocity to tube fluid.The utility model can make electric refrigerating machine group condenser obviously improve with the outer surface and the condensation of refrigerant coefficient of heat transfer of pipe, reinforcement by the helical tooth in managing, the intraductal heat exchange performance promotes significantly, improved the whole heat exchange efficiency of heat exchanger, and do not reduced to alleviate condenser weight under the thick situation of diapire.
Description of drawings:
Fig. 1 is an outside schematic diagram of the present utility model;
Fig. 2 is the outer surface and the axle side structure schematic diagram of the fin section of first kind of embodiment of the present utility model;
Fig. 3 is the pipe outer spiral fin axial section structural representation of Fig. 2;
Fig. 4 is the outer surface figure of the fin section of first kind of embodiment of the present utility model;
Fig. 5 is for being the outer surface figure of the fin section of second kind of embodiment of the present utility model;
Fig. 6 is the pipe outer spiral fin axial section structural representation of Fig. 5;
Fig. 7 is for being the outer surface figure of the fin section of the third embodiment of the present utility model;
Fig. 8 is the pipe outer spiral fin axial section structural representation of Fig. 7;
Fig. 9 is the axial section of the interior helical tooth of the pipe of fin section of the present utility model.
The specific embodiment: the specific embodiment of the present utility model is elaborated below in conjunction with accompanying drawing:
Embodiment 1: a kind of electric refrigerating machine group condenser with new and effective heat exchanger tube (referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 9), it comprises plain tube 7, fin section 9, plain tube 7 is provided with helical fin outward by body changeover portion 8 is connected with fin section 9, the body 1 outer helical fin 2 that is certain helical angle and stretches with the tube hub axis that is provided with of fin section 9 along the outer surface of tube body spiral, the external diameter of the fin 2 of fin section 9 is smaller or equal to the external diameter of plain tube 7, the top 2B of helical fin 2 is thin than root 2A, the upper end of the two sides of helical fin 2 is a shiny surface 3, the middle part of the two sides of helical fin 2 be provided with tubular axis to be 30 to 70 the degree oblique wings 4, tiltedly the upper surface of wing 4 is platform or inclined-plane, tiltedly the side of wing 4 is trapezoidal, and tiltedly a side 4A of wing 4 is bigger than the area of another relative side 4B.The scope of the height h of helical fin 2 is 0.6～1.6mm, the spacing p of fin 2 is 0.3～1.3mm, the thickness t of the top 2B of fin 2 is 0.05～0.3mm, and the thickness w of the root 2A of fin 2 is 0.1～0.4mm, and the top 2B of fin 2 is than the thin 0.05～0.2mm of root 2A.Tiltedly the intersection of wing 4 and fin 2 is 0.05～0.5mm apart from the distance b at fin 2 tops, tiltedly the height a of wing 4 is 0.3～0.6mm, tiltedly the long hem width degree c of wing 4 is 0.15～0.5mm, minor face width d is 0.10～0.4mm, stagger mutually to adjacent oblique wing along tubular axis, tiltedly the circumferential wing of wing 4 is 0.40～1.0mm apart from pe.
The utility model is the heat exchange in the enhanced tube, increase flow-disturbing, reduce the thickness in heat convection boundary layer, body 1 inner surface of fin section 9 is provided with spiral internal tooth 5, helical angle is 30～50 degree, internal tooth head number is 6～60, the normal section of internal tooth is a triangular form or trapezoidal, profile angle 30～90 degree, interior tooth depth hi is 0.2～0.5mm, cut on the spiral internal tooth 5 with its helical angle and be 40 grooves 6 of spending to an angle of 90 degrees, depth of groove h1 be in the spiral tooth depth 1/5～2/3, the normal direction spacing of groove 6 is 0.5～2.0mm.
The utility model is once moulding on plain tube, process inside spin tooth 5 that has groove 6 and the helical fin 1 that is certain helical angle and stretches with the tube hub axis along the outer surface of tube body spiral, do not have thermal contact resistance between fin section and the body, plain tube 7 is connected by changeover portion 8 with fin section 9.
Embodiment 2: a kind of electric refrigerating machine group condenser is with new and effective heat exchanger tube (referring to Fig. 5, Fig. 6, Fig. 9), it is substantially the same manner as Example 1, its difference is that present embodiment is the outer heat exchange property of enhanced tube, process the circumferential teeth groove 10 of sawtooth pattern of certain depth at helical fin 2 tops, the circumferential teeth groove 10 of sawtooth pattern is 30～90 degree oblique angles with oblique wing 4, and the circumferential teeth groove 10 of present embodiment is miter angle with oblique wing 4.When increasing area, increased the cusp quantity at top, increased the disturbance of condensate liquid, circumferentially the degree of depth e of teeth groove 10 is 0.05～0.4mm, and spacing pt is 0.4～1.0mm.
Embodiment 3: a kind of electric refrigerating machine group condenser is with new and effective heat exchanger tube (referring to Fig. 7, Fig. 8, Fig. 9), it is substantially the same manner as Example 1, its difference is that present embodiment is the outer heat exchange property of enhanced tube, process the circumferential teeth groove 10 of sawtooth pattern of certain depth at helical fin 2 tops, the circumferential teeth groove 10 of sawtooth pattern is 30～90 degree oblique angles with oblique wing 4, and the circumferential teeth groove 10 of present embodiment is an angle of 90 degrees with oblique wing 4.When increasing area, increased the cusp quantity at top, increased the disturbance of condensate liquid, circumferentially the degree of depth e of teeth groove 10 is 0.05～0.4mm, and spacing pt is 0.4～1.0mm.
Claims (8)
1. new and effective heat exchanger tube of electric refrigerating machine group condenser, it comprises plain tube (7), fin section (9), plain tube (7) is provided with helical fin outward by body changeover portion (8) is connected with fin section (9), the outer helical fin (2) that stretches along the outer surface of tube body spiral that is provided with of body (1) that it is characterized in that fin section (9), the external diameter of fin (2) is smaller or equal to the external diameter of plain tube (7), the top (2B) of helical fin (2) is thin than root (2A), the upper end of the two sides of helical fin (2) is shiny surface (3), the middle part of the two sides of helical fin (2) be provided with tubular axis to be 30 to 70 the degree oblique wings (4), tiltedly the upper surface of wing (4) is platform or inclined-plane, tiltedly the side of wing (4) is trapezoidal, and tiltedly a side (4A) of wing (4) is bigger than the area of another relative side (4B).
2. the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser according to claim 1, the height h that it is characterized in that described helical fin (2) is 0.6～1.6mm, the spacing p of fin (2) is 0.3～1.3mm, the thickness t at the top (2B) of fin (2) is 0.05～0.3mm, the thickness w of the root (2A) of fin (2) is 0.1～0.4mm, and the top (2B) of fin (2) is than the thin 0.05～0.2mm of root (2A).
3. the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser according to claim 1 and 2, the intersection that it is characterized in that described helical fin (2) and oblique wing (4) is 0.05～0.5mm apart from the distance b at fin (2) top, tiltedly the height a of wing (4) is 0.3～0.6mm, tiltedly the long hem width degree c of wing (4) is 0.15～0.5mm, minor face width d is 0.10～0.4mm, stagger mutually to adjacent oblique wing along tubular axis, tiltedly the circumferential wing of wing (4) is 0.40～1.0mm apart from pe.
4. the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser according to claim 1 and 2, it is characterized in that described helical fin (2) top is provided with the circumferential teeth groove of sawtooth pattern (10), the circumferential teeth groove of sawtooth pattern (10) is 30～90 degree oblique angles with oblique wing (4).
5. the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser according to claim 4, the degree of depth e that it is characterized in that described circumferential teeth groove (10) is 0.05～0.4mm, spacing pt is 0.4～1.0mm.
6. the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser according to claim 1, body (1) inner surface that it is characterized in that described fin section (9) is provided with spiral internal tooth (5), the normal section of spiral internal tooth (5) is a triangular form or trapezoidal, has groove (6) on the spiral internal tooth (5).
7. the new and effective heat exchanger tube of a kind of electric refrigerating machine group condenser according to claim 6, the helical angle that it is characterized in that described spiral internal tooth (5) is 30～50 degree, internal tooth head number is 6～60, profile angle 30～90 degree, and interior tooth depth hi is 0.2～0.5mm.
8. according to claim 6 or the new and effective heat exchanger tube of 7 described a kind of electric refrigerating machine group condensers, the helical angle that it is characterized in that described groove (6) and spiral internal tooth (5) is 40 and spends to an angle of 90 degrees, depth of groove h1 is 1/5～2/3 of the interior tooth depth of spiral, and the normal direction spacing of groove (6) is 0.5～2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205527973U CN201803634U (en) | 2010-09-28 | 2010-09-28 | Novel efficient heat exchange tube used for condenser of electric refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205527973U CN201803634U (en) | 2010-09-28 | 2010-09-28 | Novel efficient heat exchange tube used for condenser of electric refrigerating unit |
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| Publication Number | Publication Date |
|---|---|
| CN201803634U true CN201803634U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205527973U Expired - Lifetime CN201803634U (en) | 2010-09-28 | 2010-09-28 | Novel efficient heat exchange tube used for condenser of electric refrigerating unit |
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| CN (1) | CN201803634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949662A (en) * | 2010-09-28 | 2011-01-19 | 烟台恒辉铜业有限公司 | Novel high-efficiency heat exchange pipe for condenser of electric refrigeration unit |
| CN104903673A (en) * | 2012-11-12 | 2015-09-09 | 威兰德-沃克公开股份有限公司 | Evaporation heat transfer tube |
-
2010
- 2010-09-28 CN CN2010205527973U patent/CN201803634U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949662A (en) * | 2010-09-28 | 2011-01-19 | 烟台恒辉铜业有限公司 | Novel high-efficiency heat exchange pipe for condenser of electric refrigeration unit |
| CN101949662B (en) * | 2010-09-28 | 2012-08-15 | 烟台恒辉铜业有限公司 | Novel high-efficiency heat exchange pipe for condenser of electric refrigeration unit |
| CN104903673A (en) * | 2012-11-12 | 2015-09-09 | 威兰德-沃克公开股份有限公司 | Evaporation heat transfer tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20120815 |