Flat tube with microchannel and evaporator with the flat tube

Abstract

The present invention belongs to the technical field of evaporators, and specifically relates to a flat tube with microchannels and an evaporator with the flat tube, comprising a tube body, a plurality of channels opened in the tube body along the length direction of the tube body, a plurality of matching grooves along the length direction of the tube body are arranged on the surface of the tube body, the tube body corresponding to the matching groove is a matching section, the tube body outside the matching groove is a channel section, the channel section and the matching section are alternately distributed, the channel comprises a first channel opened in the channel section and a second channel opened in the matching section, the first channel is evenly distributed in the channel section along the width direction of the tube body, the cross sections of the first channel and the second channel are both rectangular, a plurality of ribs along the length direction of the first channel are arranged in the first channel, the inner ends of the plurality of ribs are connected in the first channel, the outer ends of the plurality of ribs are connected to the corresponding positions of the inner wall of the first channel, a plurality of through holes are arranged on the ribs, the assembly precision is high, the quality of the finished evaporator is good, the heat exchange efficiency is significantly improved, and the heat dissipation efficiency is significantly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of evaporators, and in particular relates to a flat tube with a microchannel and an evaporator with the flat tube. Background Art

[0002] The evaporator transfers the heat of the high-temperature and high-pressure gas (heat exchange medium) from the compressor to the air outside the evaporator through flat tubes and fins, so that the gaseous refrigerant evaporator condenses into a high-temperature and high-pressure liquid, which absorbs a large amount of heat and vaporizes after passing through the throttling element (such as an expansion valve or a throttling tube).

[0003] The flat tubes of the existing evaporator have an unreasonable structure and poor assembly accuracy, which affects the quality of the finished product of the evaporator. In addition, the hydraulic diameter of the flat tubes is large, which affects the heat exchange efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a flat tube with microchannels and an evaporator with the flat tube in view of the above defects, which has high assembly precision, good quality of the evaporator finished product, significantly improved heat exchange efficiency, and significantly improved heat dissipation efficiency.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] A flat tube with microchannels comprises a tube body, a plurality of channels opened in the tube body along the length direction of the tube body, the plurality of channels are distributed along the width direction of the tube body and are independent and parallel to each other, the surface of the tube body is provided with a plurality of matching grooves along the length direction thereof, the plurality of matching grooves are evenly distributed along the width direction of the tube body, the tube body corresponding to the matching grooves is a matching section, the tube body outside the matching grooves is a channel section, the channel section and the matching section are alternately distributed, the channel comprises a first channel opened in the channel section and a second channel opened in the matching section, the first channel is evenly distributed in the channel section along the width direction of the tube body, the cross sections of the first channel and the second channel are both rectangular, the first channel is provided with a plurality of ribs along the length direction thereof, the inner ends of the plurality of ribs are connected in the first channel, the outer ends of the plurality of ribs are connected to the corresponding positions of the inner wall of the first channel, and the ribs are provided with a plurality of through holes.

[0007] Furthermore, the ribs are provided with four strips, the inner ends of the ribs converge and connect at the center of the first channel, the outer ends of the ribs are respectively connected to the middle of the inner wall surface of the first channel, and the outer ends of the ribs are welded to the middle of the inner wall surface of the first channel.

[0008] Furthermore, the cross section of the first channel is square, the cross section of the second channel is rectangular, and the second side length H1 of the first channel along the thickness direction of the tube body is greater than the second side length H2 of the second channel along the thickness direction of the tube body.

[0009] Furthermore, the second side length H1 of the first channel is ≥ 2 times the second side length H2 of the second channel.

[0010] Furthermore, the bottom surface of the matching groove is parallel to the surface of the tube body.

[0011] Furthermore, the thickness of the tube body is 2±0.02 mm, and the thickness of the tube body at the matching groove is 1.6 mm.

[0012] Furthermore, in the thickness direction of the tube body, the center lines of the first channel and the second channel are in the same plane as the center line of the tube body.

[0013] Furthermore, the center of the second channel coincides with the center of the matching segment.

[0014] An evaporator comprises the flat tube with microchannels as described above, wherein the flat tube is a continuous S-shaped winding structure, and further comprises fins, an inlet collector, an outlet collector, an inlet aluminum tube, an outlet aluminum tube, a condensation inlet copper tube, and a cold ice outlet copper tube. One end of the flat tube is an inlet and the other end is an outlet. The fins are connected to the tube body. The inlet collector is connected to the inlet of the flat tube, the inlet aluminum tube is connected to the inlet of the inlet collector, the condensation inlet copper tube is connected to the inlet aluminum tube through an inlet Locke ring, the outlet collector is connected to the outlet of the flat tube, the outlet aluminum tube is connected to the outlet of the outlet collector, the condensation outlet copper tube is connected to the outlet aluminum tube through an outlet Locke ring, the structure of the connection between the inlet collector and the inlet is coordinated with the structure of the flat tube inlet end, and the structure of the connection between the outlet collector and the outlet is coordinated with the structure of the flat tube outlet end.

[0015] Furthermore, the fin is a continuous folding structure, and two ends of the fin are respectively connected to the tube bodies of two adjacent flat tubes.

[0016] The beneficial effects of the present invention are as follows: by adopting the above-mentioned scheme, the setting of the matching groove makes the surfaces of the tube body not in the same plane, which is convenient for rapid positioning during connection, improves the connection accuracy, and makes the connection with the collecting pipe more convenient and reliable, with good connection quality, thereby promoting the improvement of the quality of the evaporator; the ribs reduce the hydraulic diameter of the first channel and increase the contact area with the heat exchange medium, which significantly improves the heat exchange efficiency, and the through holes of the ribs reduce the adverse effects on the flow rate of the heat exchange medium. The present invention significantly improves the heat exchange efficiency of the flat tube and the evaporator, greatly improves the heat dissipation efficiency of the evaporator, and improves the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0018] Figure 1 The figure is a schematic cross-sectional view of a flat tube in one embodiment of the present invention.

[0019] Figure 2 for Figure 1 Enlarged schematic diagram of part I in the middle.

[0020] Figure 3 This is a side view of an evaporator in one embodiment of the present invention.

[0021] Figure 4 This is a front view of an evaporator in one embodiment of the present invention.

[0022] Among them: 1 is the tube body, 11 is the matching groove, 12 is the matching section, 13 is the channel section, 111 is the first channel, 112 is the second channel, 2 is the rib, 3 is the fin, 4 is the inlet header, 5 is the outlet header, 6 is the inlet aluminum tube, 7 is the outlet aluminum tube, 8 is the condensation inlet copper tube, 9 is the cold ice outlet copper tube, 10 is the inlet Lock ring, and 11 is the outlet Lock ring. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Reference Figure 1 , Figure 2 A flat tube with microchannels, comprising a tube body 1, a plurality of channels opened in the tube body 1 along the length direction of the tube body, the plurality of channels are distributed along the width direction of the tube body and are independent and parallel to each other, the width of the tube body 1 is 60 mm, the thickness of the tube body 1 is 2.0±0.02 mm, two matching grooves 11 are arranged on the surface of the tube body 1 along the length direction, the two matching grooves 11 are evenly distributed along the width direction of the tube body, the depth of the matching groove 11 is 0.2 mm, the width of the matching groove 11 is 4.8 mm, the groove bottom surface of the matching groove 11 is parallel to the surface of the tube body, the tube body corresponding to the matching groove 11 is a matching section 12, the tube body outside the matching groove is a channel section 13, the channel section 13 and the matching section 12 are distributed alternately, and the channel includes a matching groove 11 opened in the channel section 13 The first channel 111 and the second channel 112 are provided in the matching section 12. The first channel 111 is evenly distributed in the channel section 12 along the width direction of the tube body. The cross section of the first channel 111 is a square. The side length H1 of the first channel 111 is 1.2 mm. The cross section of the second channel 112 is a rectangle. The second side length W2 of the second channel 112 along the length direction of the tube body is 1.2 mm. The first side length H2 along the thickness direction of the tube body is 0.6 mm. H1≥2H2. In the thickness direction of the tube body, the center lines of the first channel 111 and the second channel 112 are in the same plane as the center line of the tube body. The center of the second channel 112 coincides with the center of the matching section 12, so that the structure of the tube body is regular and convenient for production and manufacturing.

[0025] Four ribs 2 are provided in the first channel 111 along its length direction, and the inner ends of the four ribs 2 are connected at the center of the first channel 111, and the outer ends of the four ribs 2 are connected and welded to the middle of the inner walls of the four sides of the first channel 111 by brazing. The inner ends of the ribs 2 are also formed by welding. A plurality of through holes are provided on the ribs 2. The ribs 2 and the key bars 2 divide the single first channel 111 into four cavities, which can reduce the hydraulic diameter and thus improve the heat exchange efficiency. The ribs 2 also increase the contact area and improve the heat exchange efficiency. The through holes on the ribs 2 can avoid adverse effects on the tassels in the first channel and improve the heat exchange efficiency. The arrangement of the grooves 11 makes the surfaces of the tube bodies not in the same plane, which is convenient for rapid positioning during connection, improves the connection accuracy, makes the connection with the collecting pipe more convenient and reliable, and has good connection quality, thereby improving the quality of the evaporator.

[0026] Reference Figure 3 , Figure 4 An evaporator comprises the flat tube with microchannels as described above, wherein the tube body 1 of the flat tube is a continuous S-shaped winding structure, and further comprises fins 3, an inlet manifold 4, an outlet manifold 5, an inlet aluminum tube 6, an outlet aluminum tube 7, a condensation inlet copper tube 8, and a cold ice outlet copper tube 9. One end of the flat tube is an inlet and the other end is an outlet. The fins 2 are connected to the tube body. The fins 3 are a continuous folding structure. The two ends of the fins 3 are respectively welded and connected to the tube bodies 1 of the two adjacent flat tubes. The inlet manifold 4 is connected to the inlet of the flat tube, the inlet aluminum tube 6 is connected to the inlet of the inlet manifold 4, the condensation inlet copper tube 8 is connected to the inlet aluminum tube 6 through an inlet Locke ring 10, the outlet manifold 5 is connected to the outlet of the flat tube, the outlet aluminum tube 7 is connected to the outlet of the outlet manifold 5, the condensation outlet copper tube 9 is connected to the outlet aluminum tube 7 through an outlet Locke ring 11, the structure at the connection between the inlet manifold 5 and the inlet is coordinated with the structure at the inlet end of the flat tube, and the structure at the connection between the outlet manifold and the outlet is coordinated with the structure at the outlet end of the flat tube.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A flat tube with microchannels, comprising a tube body, a plurality of channels opened in the tube body along the length direction of the tube body, the plurality of channels are distributed along the width direction of the tube body and are independent and parallel to each other, characterized in that: The surface of the tube body is provided with a plurality of matching grooves along the length direction thereof, and the plurality of matching grooves are evenly distributed along the width direction of the tube body. The tube body corresponding to the matching groove is the matching section, and the tube body outside the matching groove is the channel section. The channel section and the matching section are alternately distributed. The channel includes a first channel opened in the channel section and a second channel opened in the matching section. The first channel is evenly distributed along the width direction of the tube body in the channel section. The cross-sections of the first channel and the second channel are both rectangular. The first channel is provided with a plurality of ribs along the length direction thereof, and the inner ends of the plurality of ribs are connected in the first channel, and the outer ends of the plurality of ribs are connected to the corresponding inner wall of the first channel, and the ribs are provided with a plurality of through holes.

2. The flat tube with microchannels according to claim 1, characterized in that: There are four ribs, the inner ends of the ribs are connected at the center of the first channel, the outer ends of the ribs are respectively connected to the middle of the inner wall of the first channel, and the outer ends of the ribs are welded to the middle of the inner wall of the first channel.

3. The flat tube with microchannels according to claim 1, characterized in that: The cross section of the first channel is square, the cross section of the second channel is rectangular, and the second side length H1 of the first channel along the thickness direction of the tube body is greater than the second side length H2 of the second channel along the thickness direction of the tube body.

4. The flat tube with microchannels according to claim 3, characterized in that: The second side length H1 of the first channel is ≥ 2 times the second side length H2 of the second channel.

5. The flat tube with microchannels according to claim 1, characterized in that: The bottom surface of the matching groove is parallel to the surface of the tube body.

6. The flat tube with microchannels according to claim 1, characterized in that: The thickness of the tube body is 2±0.02 mm, and the thickness of the tube body at the matching groove is 1.6 mm.

7. The flat tube with microchannels according to claim 1, characterized in that: In the thickness direction of the tube body, the center lines of the first channel and the second channel are in the same plane as the center line of the tube body.

8. The flat tube with microchannels according to claim 1, characterized in that: The center of the second channel coincides with the center of the matching segment.

9. An evaporator, characterized in that: The invention comprises a flat tube with a microchannel as described in any one of claims 1 to 8, wherein the flat tube is in a continuous S-shaped winding structure, and further comprises fins, an inlet manifold, an outlet manifold, an inlet aluminum tube, an outlet aluminum tube, a condensation inlet copper tube, and a cold ice outlet copper tube. One end of the flat tube is an inlet and the other end is an outlet. The fins are connected to the tube body. The inlet manifold is connected to the inlet of the flat tube, the inlet aluminum tube is connected to the inlet of the inlet manifold, the condensation inlet copper tube is connected to the inlet aluminum tube through an inlet Locke ring, the outlet manifold is connected to the outlet of the flat tube, the outlet aluminum tube is connected to the outlet of the outlet manifold, the condensation outlet copper tube is connected to the outlet aluminum tube through an outlet Locke ring, the structure of the connection between the inlet manifold and the inlet is coordinated with the structure of the flat tube inlet end, and the structure of the connection between the outlet manifold and the outlet is coordinated with the structure of the flat tube outlet end.

10. The evaporator according to claim 9, characterized in that: The fin is a continuous folding structure, and the two ends of the fin are respectively connected to the tube bodies of two adjacent flat tubes.

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