CN210718221U

CN210718221U - Composite hole evaporation heat exchange tube

Info

Publication number: CN210718221U
Application number: CN201921189771.4U
Authority: CN
Inventors: 金莉雯; 张春明; 时明华; 景晓伟
Original assignee: Jiangsu Cuilong Precision Copper Tube Corp
Current assignee: Jiangsu Cuilong Precision Copper Tube Corp
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-06-09
Anticipated expiration: 2029-07-26

Abstract

The utility model provides a compound hole evaporation heat exchange tube, includes the body and is the heliciform outer fin of integrative structure with the body, and outer fin one side is equipped with secondary side direction fin, and outer fin top processing forms the slope shape, and the extending direction of incline direction and secondary side direction fin is unanimous, forms F type outer fin, and the clearance between the outer fin forms the compound helical channel who is linked together still process out on the F type outer fin with the helical channel both crisscross fin groove that communicates, the helical channel is cut apart into a plurality of compound hole structures, the protruding interior screw thread rib that is equipped with of body internal surface. The advantages are that: the composite annular channel formed by the gaps of the F-shaped outer fins provides a large number of vaporization cores, and is beneficial to rapid growth and rapid overflow of bubbles, meanwhile, the composite hole structure is beneficial to refrigerant flowing into holes in the evaporation heat exchange process, timely supplement of the refrigerant and effective discharge of steam are ensured, the boiling process is continuously continued, and the effect of enhancing boiling heat exchange is achieved.

Description

Composite hole evaporation heat exchange tube

Technical Field

The utility model belongs to the technical field of the evaporation heat exchange tube among air conditioner, the refrigerating system, concretely relates to compound hole evaporation heat exchange tube.

Background

The evaporation heat exchanger is an indispensable component in a central air-conditioning system, and the evaporation tube is a core component of the evaporation heat exchanger, and the heat exchange performance of the evaporation heat exchanger determines the performance of the evaporation heat exchanger. For the heat exchange tube manufacturing industry, the energy efficiency of refrigeration air conditioning equipment is mainly improved by improving the heat exchange efficiency of the heat exchange tube. In the evaporating tube used in the refrigeration and air conditioning system, the boiling heat transfer thermal resistance and the forced convection heat transfer thermal resistance in the tube when the refrigerant boils outside the tube are quite large, even the boiling heat transfer thermal resistance outside the tube is larger than the forced convection heat transfer thermal resistance in the tube, therefore, the heat exchange efficiency of the evaporating tube can be effectively improved by optimizing the structure of the fins outside the tube and strengthening the boiling heat transfer outside the tube.

In the prior art, the shape of the outer fin is generally processed into a T shape. The traditional T-shaped fin is easy to process, so that the traditional T-shaped fin is widely adopted. For example, the fins of the "evaporator heat transfer tube" disclosed in chinese patent 10135786.7 and the "heat exchange tube for an evaporator" disclosed in chinese patent 20297489.5 are both T-shaped fins, and the gaps between the fins form a hole structure, so that the fins become a vaporization core required when the refrigerant forms bubbles, thereby achieving the effect of boiling heat exchange. However, in the process of processing the T-shaped fin, the vertical outer fin is flattened from the top by using a blade, and in the pressing process, the vertical fin under the action of pressure has the possibility of bending deformation, so that the T-shaped fin is irregular in shape, the sizes of cavity structures are not uniform, and the heat exchange performance of the evaporation tube is influenced.

In view of the above-mentioned prior art, the applicant has made an advantageous design, and the technical solutions described below have been made in this context.

Disclosure of Invention

The utility model aims at the defects of the prior art, and provides an evaporation heat exchange tube with composite holes.

The utility model aims at reaching like this, a compound hole evaporation heat exchange tube, be the outer fin that is a body structure with the body including the body and by material extension formation on the body, outer fin one side is provided with secondary side direction fin, the outer fin top forms the slope shape through blade processing, forms F type outer fin, clearance between the F type outer fin forms the compound helical passage of mutual intercommunication still process on the F type outer fin with helical passage not only crisscross but also the fin groove of intercommunication, run through the F type outer fin on with the circumference and cut apart, make helical passage is cut apart by the fin groove and is formed a plurality of compound hole structures, the protruding interior screw thread rib that is a body structure with the body that is equipped with of body internal surface.

In a further preferred construction, the secondary lateral fins are located on either side of the outer fins.

In a further preferred configuration, the fin is inclined in the same direction as the extending direction of the secondary side fins, thereby forming F-shaped outer fins.

In a further preferable structure, the pitch P of the fins is 0.4-1.5 mm.

In a further preferred structure, the inclination angle α of the fin is 60-90 °.

In a further preferable structure, the included angle β between the secondary lateral fins and the fins is 60-90 degrees.

In a further preferable structure, the height H of the F-shaped outer fin is 0.4-1.0 mm.

In a further preferable structure, the height h of the secondary lateral fins is 0.2-0.6 mm.

In a further preferred construction, the cross-sectional profile of the fin trough includes a rectangle, an inverted trapezoid and an inverted triangle.

In a further preferable structure, the included angle gamma between the fin groove and the axis is 1-60 degrees, the groove depth is 0.3-1.0 mm, and the number of the circumferential fin grooves is 60-180.

In a further preferable structure, the height of the internal thread rib is 0.3-0.6 mm, the number of the circumferential internal thread ribs is 20-60, and the spiral angle is 10-70 °.

The utility model discloses a blade makes the perpendicular outer fin that is equipped with secondary side direction fin form F type structure to perpendicular outer fin side direction ram, and the blade is to the side direction ram processing of perpendicular fin, has effectively avoided the bending deformation of fin in the course of working, makes the hole structure of formation between the fin even unanimous, has guaranteed the stability of evaporation heat transfer process. In addition, the secondary side fin structure on the outer fin enables the single hole structure among the fins to be a composite hole structure, the vaporization core during the evaporation of the refrigerant is further increased, and the composite hole structure is beneficial to the rapid growth and rapid overflow of bubbles formed by evaporation, so that the boiling process is continuously continued, and the effect of enhancing the boiling heat exchange of the evaporation tube is achieved.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is another schematic perspective view of the first embodiment of the present invention;

fig. 3 is a cross-sectional view of a first embodiment of the present invention;

fig. 4 is a plan view of a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second embodiment of the present invention;

fig. 6 is another perspective view of the second embodiment of the present invention;

fig. 7 is a cross-sectional view of a second embodiment of the present invention;

fig. 8 is a plan view of a second embodiment of the present invention.

In the figure: the structure comprises a pipe body 1, an outer fin body 2-F type (21-outer fin body, 22-secondary side outer fin body), a spiral channel 3, a fin groove 4 and an inner threaded rib 5.

Detailed Description

The technical practice and advantages of the present invention will be further clarified by the following description with reference to the accompanying drawings and specific examples, but the description of the embodiments is not intended to limit the technical solutions of the present invention, and any equivalent changes in form and insubstantial changes made according to the inventive concept should be considered as the technical solution of the present invention.

Example 1:

referring to fig. 1 and 2, the structural schematic diagram of a first embodiment of the composite hole evaporation heat exchange tube of the present invention is shown, in the preferred embodiment, the heat exchange tube includes a tube body 1 having an inner cavity, the outer surface of the tube body 1 is provided with outer fins 21 distributed spirally and integrated with the tube body 1, one side of the outer fins 21 is provided with secondary lateral fins 22, the composite fins formed by the structure enable a single hole structure between the fins to be a composite hole structure, and further increase a vaporization core during refrigerant evaporation, as shown in fig. 3, the top of the outer fins 21 is processed by a blade to form an inclined shape, the inclined direction is consistent with the extending direction of the secondary lateral fins 22 and is inclined to the left, so as to form F-shaped outer fins 2, the pitch P of the fins 21 is 0.55mm, the inclination angle α is 75 °, the included angle between the lateral fins 22 and the fins 21 is 70 °, the height H of the secondary lateral fins 22 is 0.4mm, the height H of the outer fins 2 is 0.7mm, the F-shaped outer fins effectively avoid the bending deformation of the fins during the processing, the fin structure is β formed continuously, the hole structure is 354 mm, the groove structure is uniformly formed, the groove cross section of the groove structure is uniformly formed, the groove is uniformly formed, the groove is a plurality of the groove structure, the groove is uniformly formed, the groove is uniformly formed, the groove is uniformly formed in the groove is uniformly formed, the groove is uniformly formed, the groove is formed in the groove forming a plurality of the.

Example 2:

referring to fig. 5 and 6, a schematic structural diagram of a second embodiment of the compound hole evaporation heat exchange tube of the present invention is shown, in the preferred embodiment, the basic structure and principle are the same as those of the first embodiment, except that, as shown in fig. 7 and 8, the inclination direction of the fin 21 of the heat exchange tube is inclined to the right in accordance with the extending direction of the secondary lateral fin 22, the inclination angle α of the fin 21 is 89 °, and the included angle β between the secondary lateral fin 22 and the fin 21 is 89 °.

To sum up, the technical scheme provided by the utility model makes up the shortages and deficiencies in the prior art, completes the invention task, and realizes the technical effects described in the technical effect column by the applicant, and the technical scheme is an ultimate technical scheme.

Claims

1. A composite hole evaporation heat exchange tube is characterized in that: comprises a tube body (1) with an inner cavity, outer fins (21) which are spirally distributed and integrated with the tube body (1) are arranged on the outer surface of the tube body (1), a secondary side fin (22) is arranged on one side of the outer fin (21), the top of the outer fin (21) is processed into an inclined shape through a blade to form an F-shaped outer fin (2), gaps among the F-shaped outer fins (2) form mutually communicated composite spiral channels (3), the F-shaped outer fin (2) is also provided with fin grooves (4) which are staggered and communicated with the spiral channel (3), the F-shaped outer fin (2) on the circumference is penetrated and divided, the spiral channel (3) is divided by the fin grooves (4) to form a plurality of composite hole structures, the inner surface of the pipe body (1) is convexly provided with an inner threaded rib (5) which is integrated with the pipe body (1).

2. A composite hole evaporating heat exchange tube as set forth in claim 1 wherein: the secondary lateral fins (22) are located on either side of the outer fins (21).

3. A composite hole evaporating heat exchange tube as set forth in claim 1 wherein: the inclination direction of the fins (21) is consistent with the extension direction of the secondary side fins (22), and an F-shaped outer fin (2) is formed.

4. A composite hole evaporating heat exchange tube as set forth in claim 1 wherein: the pitch P of the fins (21) is 0.4-1.5 mm.

5. The evaporation heat exchange tube with composite holes as claimed in claim 1, wherein the inclination angle α of the fin (21) is 60-90 °.

6. The composite hole evaporation heat exchange tube as claimed in claim 2, wherein the included angle β between the secondary lateral fins (22) and the fins (21) is 60-90 degrees.

7. A composite hole evaporating heat exchange tube as set forth in claim 3 wherein: the height H of the F-shaped outer fin (2) is 0.4-1.0 mm.

8. A composite-hole evaporative heat exchange tube as set forth in claim 2, wherein: the height h of the secondary lateral fins (22) is 0.2-0.6 mm.

9. A composite hole evaporating heat exchange tube as set forth in claim 1 wherein: the cross section outline of the fin groove (4) comprises a rectangle, an inverted trapezoid and an inverted triangle.

10. A composite hole evaporating heat exchange tube as set forth in claim 1 wherein: the included angle gamma between the fin groove (4) and the axis is 1-60 degrees, the groove depth is 0.3-1.0 mm, and the number of circumferential fin grooves is 60-180.

11. A composite hole evaporating heat exchange tube as set forth in claim 1 wherein: the height of the internal thread ribs (5) is 0.3-0.6 mm, the number of the circumferential internal thread ribs is 20-60, and the spiral angle is 10-70 degrees.