CN202814168U - High-energy-efficiency heat exchange device - Google Patents

Abstract

The utility model discloses a high-energy-efficiency heat exchange device. The high-energy-efficiency heat exchange device comprises a coiled pipe and a fin which is sleeved on the coiled pipe through a penetrating hole, wherein the radial cross section of a middle straight pipe of the coiled pipe is of an elliptical shape or an approximate elliptical shape, the size range A of a long shaft of the coiled pipe is that A is larger than or equal to 7.5mm and is less than or equal to 14.05mm, the size range B of a short shaft is that B is larger than or equal to 3.14mm and is less than or equal to 5.6mm, the radial cross sections of elbow pipes at two ends of the coiled pipe are of round shapes, and the middle straight pipe and the elbow pipes are in smooth transition; and a fin penetrating hole is of an elliptical shape or an approximate elliptical shape which is matched with that of the middle straight pipe, the fin penetrating hole is tightly matched with the middle straight pipe, the size range of a long shaft of the fin penetrating hole is 7.65mm-15.5mm, and the size range of a short shaft of the fin penetrating hole is 3.3mm-6mm. By adopting the high-energy-efficiency heat exchange device disclosed by the utility model, the heat exchange wind resistance of the high-energy-efficiency heat exchange device can be greatly reduced, the passing speed of a medium in a pipe can be slowed down, and thus the heat exchange effect and the heat exchange energy efficiency are effectively increased; and meanwhile, the size of the high-energy-efficiency heat exchange device can be reduced, the using materials and the using cost can be reduced, and the production efficiency can be increased.

Description

The high energy efficiency heat-exchanger rig

Technical field

The utility model relates to heat exchanger, more particularly, relates to a kind of high energy efficiency heat-exchanger rig.

Background technology

Current in the equipment of mechanical compression refrigeration, usually can use the heat-exchanger rigs such as condenser, evaporimeter, by the refrigerant loses heat of condenser to HTHP, and then enter indoor by the evaporimeter swelling heat absorption, thereby reach the effect of refrigeration.And the radiating effect of heat-exchanger rig will directly have influence on the refrigeration efficiency of whole refrigeration plant.

Traditional heat-exchanger rig is to adopt disk pipe (radial section is for circular) and be sheathed on radiating fin (perforation also is circle) on the coil pipe, heat and outside air exchange with medium in the pipe, to reach the purpose of heat radiation, its mainly be by wind when radiating fin is blown over dissipation of heat, but because the windage of disk pipe is larger, and there is eddy current in the lee side of disk pipe, so that the back of disk pipe have wind less than the dead angle, therefore had a strong impact on the radiating effect of wind-force, thus the efficient of impact refrigeration.In addition, because medium circulates comparatively smooth and easyly in the disk pipe, flow velocity is very fast, equally also so that radiating effect is not good.The heat-exchange capacity of such heat exchanger is relatively poor, in order to reduce temperature, sometimes need to make the heat exchanger (two rows even three row's disk pipes merge setting) of larger volume, greatly increased so again production cost and technology difficulty, therefore can't satisfy the requirement of highly effective refrigeration.

The utility model content

For the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of high energy efficiency heat-exchanger rig, and this heat-exchanger rig can reduce windage, improves the heat exchange efficiency.

For achieving the above object, the utility model adopts following technical scheme:

This high energy efficiency heat-exchanger rig comprises coil pipe and is sheathed on fin on the coil pipe by perforation, the radial section of the middle straight tube of described coil pipe is ellipse or approximate ellipsoidal, its major axis A size range is 7.5mm≤A≤14.05mm, minor axis B size range is 3.14mm≤B≤5.6mm, the radial section of the two ends bend pipe of coil pipe is circular, seamlessly transits between middle straight tube and the bend pipe; Described fin perforation is ellipse or the approximate ellipsoidal that is complementary with middle straight tube, and closely cooperates with middle straight tube, and its major axis dimension scope is 7.65mm～15.5mm, and the minor axis dimension scope is 3.3mm～6mm.

The major axis dimension A of the radial section of the middle straight tube of described coil pipe is 7.5mm, and minor axis dimension B is 3.14mm; Described fin hole dimension is complementary with it, and closely cooperates.

The major axis dimension A of the radial section of the middle straight tube of described coil pipe is 8.6mm, and minor axis dimension B is 3.95mm; Described fin hole dimension is complementary with it, and closely cooperates.

The major axis dimension A of the radial section of the middle straight tube of described coil pipe is 11.01mm, and minor axis dimension B is 4.94mm; Described fin hole dimension is complementary with it, and closely cooperates.

Also offer shutter or corrugated plate between the described fin perforation.

The described fin perforation back side also is provided with flange.

Described approximate ellipsoidal is to be joined end to end by the curve of the curve of some sections different curvature, some sections straight lines or some sections different curvature and straight line to connect the closed figure that is combined into.

Also be provided with disturbing flow device in the described coil pipe.

In technique scheme, high energy efficiency heat-exchanger rig of the present utility model comprises coil pipe and is sheathed on fin on the coil pipe by perforation, the radial section of the middle straight tube of described coil pipe is ellipse or approximate ellipsoidal, its major axis A size range is 7.5mm≤A≤14.05mm, minor axis B size range is 3.14mm≤B≤5.6mm, the radial section of the two ends bend pipe of coil pipe is circular, seamlessly transits between middle straight tube and the bend pipe; Described fin perforation is ellipse or the approximate ellipsoidal that is complementary with middle straight tube, and closely cooperates with middle straight tube, and its major axis dimension scope is 7.65mm～15.5mm, and the minor axis dimension scope is 3.3mm～6mm.Adopt this heat-exchanger rig can greatly reduce its heat exchange windage, and slow down medium Negotiation speed in pipe, thus Effective Raise its heat transfer effect and heat exchange efficiency, can also reduce simultaneously its volume, reduce use material and cost, enhance productivity.

Description of drawings

Fig. 1 is the assembling schematic diagram of oval coil pipe of the present utility model and a fin;

Fig. 2 is the assembling schematic diagram of approximate ellipsoidal coil pipe of the present utility model and a fin;

Fig. 3 is the not structural representation of the coil pipe of welding of elbow of an end of the present utility model;

Fig. 4 is the cutaway view along A-A line among Fig. 3;

Fig. 5 is the structural representation (shutter) of a kind of fin of the present utility model;

Fig. 6 is the structural representation (corrugated plate) of a kind of fin of the present utility model.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also Fig. 1～shown in Figure 4, what high energy efficiency heat-exchanger rig of the present utility model was same as the prior art is, equally also comprises coil pipe 1 and by 2 fins 3 that are sheathed on the coil pipe 1 of boring a hole.Difference is, the radial section of the middle straight tube 11 of coil pipe 1 of the present utility model is ellipse or approximate ellipsoidal, its major axis A size range is 7.5mm≤A≤14.05mm, minor axis B size range is 3.14mm≤B≤5.6mm, the radial section of the two ends bend pipe 12 of coil pipe 1 is circular, seamlessly transits between middle straight tube 11 and the bend pipe 12; Described fin 3 perforation 2 are ellipse or the approximate ellipsoidal that is complementary with middle straight tube 11, and closely cooperate with middle straight tube 11, and its major axis dimension scope is 7.65mm～15.5mm, and the minor axis dimension scope is 3.3mm～6mm.

Through repeatedly, calculation and test repeatedly, obtain following better pairing size:

The major axis dimension A of the radial section of the middle straight tube 11 of described coil pipe 1 is 7.5mm, and minor axis dimension B is 3.14mm; Described fin 3 perforation 2 sizes are complementary with it, and closely cooperate.

The major axis dimension A of the radial section of the middle straight tube 11 of described coil pipe 1 is 8.6mm, and minor axis dimension B is 3.95mm; Described fin 3 perforation 2 sizes are complementary with it, and closely cooperate.

The major axis dimension A of the radial section of the middle straight tube 11 of described coil pipe 1 is 11.01mm, and minor axis dimension B is 4.94mm; Described fin 3 perforation 2 sizes are complementary with it, and closely cooperate.

Please in conjunction with also offering shutter 4 or corrugated plate 5 between described fin 3 perforation 2 of Fig. 5, Fig. 6, can further improve the radiating effect of fin 3.

Described fin 3 perforation 2 back sides also are provided with flange 6, and its effect is after coil pipe 1 penetrates fin 3 perforation 2, when swollen hole, can prevent that adjacent fins 3 from stacking, to keep certain intervals.

Also be provided with disturbing flow device in the described coil pipe 1, such as spoiler etc., can be as required, in all coil pipe 1 interior settings, also can in the 1 interior setting of part coil pipe, play the tube fluid medium is carried out flow-disturbing, slow down the flow through speed of medium in pipe, also be conducive to improve heat transfer effect.

Described approximate ellipsoidal is to be joined end to end by the curve of the curve of some sections different curvature, some sections straight lines or some sections different curvature and straight line to connect the closed figure that is combined into, and perforation 2 shown in Figure 2 is the approximate ellipsoidal that some sections straight lines are connected and are combined into.

Need to prove that at this coil pipe 1 of the present utility model can adopt the U-shaped Guan Yiduan weld ell of the length among Fig. 3 to make, also can adopt straight tube two ends welding bend pipe to be made.

High energy efficiency heat-exchanger rig of the present utility model because the middle straight tube of its coil pipe 1 adopts ellipse or approximate ellipsoidal, can reduce the air side flow resistance greatly, and side medium has increased wetted perimeter and disturbance, has strengthened heat transfer, and heat transfer coefficient can improve greatly.When wind blows, can there be eddy current in lee face at the rear portion of coil pipe 1, the windage when therefore greatly reducing heat radiation, and also there is not the heat radiation dead angle in the coil pipe 1 of oval and approximate ellipsoidal, so greatly improved radiating effect, thus heat exchange efficiency improved.And the coil pipe 1 of shape like this, its surface is nearly streamlined, and the wind-force that also can make flows more smooth and easy, further reduces windage, improves the heat exchange efficiency, and the COP value can run to more than 3.2.In addition, like this coil pipe 1 of shape, the speed of flowing through of its interior media is starkly lower than round coil 1, also so that the heat transfer effect of medium further improve.

Detect the check of mechanical industry heat exchanger product quality supervision inspection center of institute through the Hefei general-purpose machinery and electrical applicances, adopt heat-exchanger rig of the present utility model, its Coefficient K 〉=86.99W/m ²℃, far above the K 〉=40W/m among the industry standard JB/T 7695.5-1995 ²℃ regulation.

In addition, adopt the utility model that the different outdoor machine of air-conditioner heat exchangers of a plurality of famous brand names are in the market transformed, experimental test result and performance comparison before and after transforming are seen such as following table 1～table 3:

Table 1

Table 2

Table 3

By above-mentioned test, proved that equally also heat-exchanger rig of the present utility model compares with the prior art that adopts round coil, have a significant effect, cold anharmonic ratio, volume ratio (volume that the specific refrigerating effect air-conditioning is shared), efficiency when all are better than existing heat-exchanger rig on the key technology economic indicator such as manufacturing cost.

Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (8)

1. high energy efficiency heat-exchanger rig comprises coil pipe and is sheathed on fin on the coil pipe by perforation, it is characterized in that:

The radial section of the middle straight tube of described coil pipe is ellipse or approximate ellipsoidal, its major axis A size range is 7.5mm≤A≤14.05mm, minor axis B size range is 3.14mm≤B≤5.6mm, and the radial section of the two ends bend pipe of coil pipe is circular, seamlessly transits between middle straight tube and the bend pipe; Described fin perforation is ellipse or the approximate ellipsoidal that is complementary with middle straight tube, and closely cooperates with middle straight tube, and its major axis dimension scope is 7.65mm～15.5mm, and the minor axis dimension scope is 3.3mm～6mm.

2. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

The major axis dimension A of the radial section of the middle straight tube of described coil pipe is 7.5mm, and minor axis dimension B is 3.14mm; Described fin hole dimension is complementary with it, and closely cooperates.

3. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

The major axis dimension A of the radial section of the middle straight tube of described coil pipe is 8.6mm, and minor axis dimension B is 3.95mm; Described fin hole dimension is complementary with it, and closely cooperates.

4. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

The major axis dimension A of the radial section of the middle straight tube of described coil pipe is 11.01mm, and minor axis dimension B is 4.94mm; Described fin hole dimension is complementary with it, and closely cooperates.

5. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

Also offer shutter or corrugated plate between the described fin perforation.

6. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

The described fin perforation back side also is provided with flange.

7. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

Described approximate ellipsoidal is to be joined end to end by the curve of the curve of some sections different curvature, some sections straight lines or some sections different curvature and straight line to connect the closed figure that is combined into.

8. high energy efficiency heat-exchanger rig as claimed in claim 1 is characterized in that:

Also be provided with disturbing flow device in the described coil pipe.

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