CN211425124U

CN211425124U - Tube-fin heat exchanger

Info

Publication number: CN211425124U
Application number: CN201921349997.6U
Authority: CN
Inventors: 陈东东; 钱苗永; 翁良津
Original assignee: Guangdong Aosen Heat Exchange System Co ltd
Current assignee: Guangdong Aosen Heat Exchange System Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-09-04
Anticipated expiration: 2029-08-19

Abstract

The utility model provides a tube-fin heat exchanger belongs to heat exchanger equipment technical field. The tube fin type heat exchanger solves the problem that the existing tube fin type heat exchanger usually adopts a mode that two ends of a straight copper tube are welded to form a cross elbow, and a mode that two ends of a long straight copper tube are welded increases the risk of leakage; and both ends welded problem such as with high costs, a pipe fin heat exchanger, including fin subassembly and wear to locate the heat exchange tube subassembly on the fin subassembly, the one end of heat exchange tube subassembly is provided with fluid inlet, the other end of heat exchange tube subassembly is provided with the fluid outlet, the heat exchange tube subassembly includes many long U type return bends and strides the elbow, connect through striding the elbow between per two long U type return bends, long U type return bend includes curved part and straight portion, curved part and straight portion integrated into one piece. The utility model has the advantages of low cost and the like.

Description

Tube-fin heat exchanger

Technical Field

The utility model belongs to the technical field of heat exchanger equipment, in particular to tube fin heat exchanger.

Background

The tube-fin heat exchanger is used as a compact heat exchanger and has wide application in the refrigeration industry. As shown in fig. 4, 5, and 7, the conventional tube-fin heat exchanger usually adopts a form of welding two ends of a straight copper tube to form a cross elbow, and a form of welding two ends of a long straight copper tube to form a cross elbow increases the risk of leakage; and the cost of welding the two ends is high.

Disclosure of Invention

The utility model aims at providing a to the above-mentioned problem that exists among the prior art, provide a tube fin heat exchanger.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a tube fin heat exchanger, its characterized in that includes fin assembly and wears to locate the heat exchange tube assembly on the fin assembly, the one end of heat exchange tube assembly be provided with fluid inlet, the other end of heat exchange tube assembly is provided with the fluid outlet, the heat exchange tube assembly include many root length U type return bends and stride the elbow, per two the length U type return bend between connect through striding the elbow, length U type return bend include the bending and straight portion, bending and straight portion integrated into one piece.

The utility model discloses a theory of operation: when the heat exchanger works, the flowing refrigerant of the heat exchange tube assembly is generally refrigerant, such as Freon and the like, and the refrigerant enters from the fluid inlet, exchanges heat and then flows out from the fluid outlet. The heat exchange tube assembly of traditional heat exchanger adopts straight type copper pipe both ends welding to stride the form of elbow, and the utility model discloses a per two long U type return bend between connect through striding the elbow, follow original straight tube both ends welded form, changed into one end and connected to reduce half the welding point and stride the use quantity of elbow, reduced the risk of leaking, improved the quality, also reduced the processing cost, traditional individual stride the elbow and need solder 8g and wall thickness need 0.75 mm. The utility model discloses save solder 0.52 yuan/one, the copper product saves 0.75 yuan/one, also saves about 30 yuan/one of cost of labor two-end welding.

In the tube-fin heat exchanger, the long U-shaped bent tube is formed by bending a long straight copper tube.

In the above tube-fin heat exchanger, the span bend is welded to the long U-shaped bend.

In the tube-fin heat exchanger, the radius of the bent part is 27.5mm, 22mm or 33 mm.

In the tube-fin heat exchanger, the fin assembly comprises a plurality of fins, and the fins are provided with holes for the straight parts to pass through.

In the above tube and fin heat exchanger, the edges of the fins are embossed.

In the tube-fin heat exchanger, fixing plates are further arranged on two sides of the fin assembly and used for fixing the heat exchange tube assembly.

In the tube-fin heat exchanger, the fixing plate is further provided with a fixing lug for being mounted on the frame.

In the above tube and fin heat exchanger, the number of the straight portions of each long U-shaped bent tube is 2, and the number of the bent portions of each long U-shaped bent tube is 1.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses reduce the welding process link, change one end welding into by two sections welding.

2. The utility model discloses reduced material cost, weld one and stride the elbow and need 8g solders, reduced half the welding point and stride elbow quantity, then reduced material cost.

3. The utility model provides the high improvement quality of heat exchanger reduces half welding point and is equivalent to reducing half the risk of revealing. The most important quality of the air conditioner heat exchanger is to prevent leakage.

Drawings

Fig. 1 is a schematic structural view of a long U-shaped bent pipe according to the present invention;

fig. 2 is a schematic structural view of the fin assembly of the present invention;

fig. 3 is a schematic structural view of the fin of the present invention;

FIG. 4 is a schematic view of a conventional heat exchange tube of the present invention;

FIG. 5 is a schematic side view of a heat exchanger constructed using conventional techniques;

fig. 6 is a schematic side view of the present invention;

FIG. 7 is a schematic view of a top view of a heat exchange tube assembly made by conventional techniques;

fig. 8 is a schematic view of the depression structure of the present invention.

In the figure, 1, a fin assembly; 2. a heat exchange tube assembly; 3. a fluid inlet; 4. a fluid outlet; 5. a long U-shaped bent pipe; 6. spanning the elbow; 7. a bent portion; 8. a straight portion; 9. a fin; 10. opening a hole; 11. embossing; 12. a fixing plate; 13. and fixing the ears.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, 6 and 8, a tube-fin heat exchanger comprises a fin assembly 1 and a heat exchange tube assembly 2 arranged on the fin assembly 1 in a penetrating manner, wherein one end of the heat exchange tube assembly 2 is provided with a fluid inlet 3, the other end of the heat exchange tube assembly 2 is provided with a fluid outlet 4, the heat exchange tube assembly 2 comprises a plurality of long U-shaped bent tubes 5 and cross bends 6, every two long U-shaped bent tubes 5 are connected through the cross bends 6, each long U-shaped bent tube 5 comprises a bent part 7 and a straight part 8, and the bent part 7 and the straight part 8 are integrally formed.

In more detail, the long U-shaped bent pipe 5 is formed by bending a long straight copper pipe. The span bend 6 is welded with the long U-shaped bent pipe 5. The number of the straight parts 8 of each long U-shaped bent pipe 5 is 2, and the number of the bent parts 7 of each long U-shaped bent pipe 5 is 1.

The traditional finned tube heat exchanger usually adopts a form of welding the two ends of a straight copper tube to form a span elbow 6, as shown in fig. 4, two ends of the straight copper tube need to be welded, so that the working hours are more, the number of welding points is more, the risk of refrigerant leakage is high, and the cost is also high.

And the long U-shaped bent pipe 5 of the utility model is formed by directly bending a long straight copper pipe. And (4) putting the long straight copper pipe into a manual pipe bending machine for pipe bending.

Wherein, the quantity of the straight portion 8 of each long U-shaped bent pipe 5 is 2, the straight portion 8 of the long U-shaped bent pipe 5 is equivalent to the traditional straight copper pipe, and then a long U-shaped bent pipe 5 has 2 straight portions 8, equivalent to the traditional two straight copper pipes, and the utility model discloses a 2 straight portions 8 are connected through a bent portion 7, and straight portion 8 and bent portion 7 integrated into one piece, need not the welding; whereas two conventional straight copper tubes require a cross-over head to be welded together. The event the utility model discloses the welding point has been saved to reduce the risk of leaking, improved the quality of heat exchanger, and the cost is reduced.

And the two ends of the traditional straight copper pipe are welded, and the straight part 8 of the utility model can be welded only by one end. Therefore, the utility model reduces the welding process links and reduces the cost.

In further detail, the radius of the bend 7 is 27.5mm or 22mm or 33 mm.

In more detail, the fin assembly 1 comprises a plurality of fins 9, and the fins 9 are provided with holes 10 for the straight parts to pass through. The edges of the fins 9 are embossed 11.

In further detail, fixing plates 12 are further arranged on two sides of the fin assembly 1, and the fixing plates 12 are used for fixing the heat exchange tube assembly 2. The fixed plate 12 is further provided with fixing lugs 13 for mounting on a rack. The heat exchanger requires fixing lugs 13 for mounting to a frame of an air conditioner or the like.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms fin assembly 1, heat exchange tube assembly 2, fluid inlet 3, fluid outlet 4, long U-bend 5, return bend 6, bend 7, straight portion 8, fins 9, openings 10, slits 11, retaining plates 12, retaining tabs 13, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The tube-fin heat exchanger is characterized by comprising a fin component (1) and a heat exchange tube component (2) penetrating through the fin component (1), wherein one end of the heat exchange tube component (2) is provided with a fluid inlet (3), the other end of the heat exchange tube component (2) is provided with a fluid outlet (4), the heat exchange tube component (2) comprises a plurality of long U-shaped bent tubes (5) and cross bends (6), every two long U-shaped bent tubes (5) are connected through the cross bends (6), each long U-shaped bent tube (5) comprises a bent part (7) and a straight part (8), and the bent parts (7) and the straight parts (8) are integrally formed;

the fin assembly (1) comprises a plurality of fins (9), and the fins (9) are provided with holes (10) for the straight parts to pass through;

the edge of the fin (9) is embossed (11).

2. The tube fin heat exchanger as claimed in claim 1, wherein the long U-shaped bent tube (5) is formed by bending a long straight copper tube.

3. The tube fin heat exchanger according to claim 1, characterized in that the cross bend (6) and the long U-bend (5) are welded.

4. A tube and fin heat exchanger according to claim 1, characterised in that the radius of the bend (7) is 27.5mm or 22mm or 33 mm.

5. The tube fin heat exchanger as claimed in claim 1, wherein fixing plates (12) are further arranged on two sides of the fin assembly (1), and the fixing plates (12) are used for fixing the heat exchange tube assembly (2).

6. The tube fin heat exchanger according to claim 5, characterized in that the fixing plate (12) is further provided with fixing lugs (13) for mounting on a rack.

7. The tube and fin heat exchanger of claim 1, wherein the number of straight portions of each long U-bend is 2, and the number of bent portions of each long U-bend is 1.