CN202814189U

CN202814189U - Heat exchanger

Info

Publication number: CN202814189U
Application number: CN 201220501636
Authority: CN
Inventors: 曹鹏飞; 金从卓; 许永峰; 赵贝
Original assignee: Hefei Swan Refrigeration Technology Co Ltd
Current assignee: 719th Research Institute of CSIC
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2013-03-20
Anticipated expiration: 2022-09-27

Abstract

The utility model relates to a heat exchanger which comprises alpaca pipes uniformly spirally wound, wherein copper wires are uniformly wound on outer walls of the alpaca pipes, the copper wires are surrounded to be in a continuous hollow rectangular shape, and the copper wires are surrounded along circumferential directions of the alpaca pipes in a spiral mode, and the copper wires and the outer walls of the alpaca pipes are fixed. According to the technical scheme of the heat exchanger, the alpaca pipes are wound in a spiral mode, the outer walls of the alpaca pipes are fixedly provided with the copper wires with hollow rectangular sections in a surrounded mode, namely the outer walls of the alpaca pipes are not all wrapped through the copper wires, outside air can pass through the middle of the rectangular copper wires and can directly contact the pipe walls of the alpaca pipes, air resistance is relatively small, the temperature of the air can be increased within a short flow path, and heat exchange efficiency is high.

Description

Heat exchanger

Technical field

The utility model relates to a kind of heat exchanger, relates to specifically the heat exchanger in a kind of salt water heater.

Background technology

Heat exchanger is as the important component part of salt water heater, just progressively to small-sized, high efficiency development.At present main what adopt is finned coil heat exchanger, and this heat exchanger coils outside is all wrapped up by copper fin, outside air can only with the outside fin heat exchange, air is also relatively large by the flow resistance of finned coil, so the heat exchange efficiency of this heat exchanger is not high.

The utility model content

The heat exchanger that provides a kind of heat exchange efficiency high is provided the purpose of this utility model.

For achieving the above object, the utility model has adopted following technical scheme: comprise being the evenly Alpaka pipe of coiling of screw type, uniform ring is wound with copper wire on the outer wall of described Alpaka pipe, described copper wire turns to continuous hollow rectangular shape, and copper wire along the Alpaka pipe circumferentially be screw type around, the outer wall of described copper wire and Alpaka pipe fixes.

Be coated with the tin layer on the outer wall of Alpaka pipe of the present utility model, the inside of copper wire is equipped with copper wire is fixed on solder stick on the Alpaka pipe outer wall, and the solder stick on the copper wire welds mutually with tin layer on the Alpaka pipe outer wall.

Spacing A between the every circle of Alpaka pipe of the present utility model is 26mm.

Spacing B between the every circle of copper wire of the present utility model is 2mm.

Tin thickness of the present utility model is 3 μ m.

Solder stick of the present utility model cross section is rectangular.

As shown from the above technical solution, Alpaka pipe of the present utility model is the screw type coiling, and retainer ring is wound with the copper wire that the cross section is hollow rectangle on the outer wall of Alpaka pipe, the outer wall that is the Alpaka pipe is not all to be wrapped up by copper wire, outside air can be passed through in the middle of the copper wire of rectangle, can more directly touch the tube wall of Alpaka pipe, the air drag less, air can improve temperature in very short flow process, heat exchange efficiency is high.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the schematic diagram of the utility model copper wire coiling;

Fig. 3 is the structural representation of copper wire of the present utility model and Alpaka pipe.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further:

A kind of heat exchanger as shown in Figure 1-Figure 3, comprise and be the evenly Alpaka pipe 1 of coiling of screw type, spacing A between Alpaka pipe 1 every circle is 26mm, the Alpaka pipe ring around the number of turns can design according to the heat exchange amount of reality, uniform ring is wound with some copper wires 2 on the outer wall of Alpaka pipe 1, copper wire turns to continuous hollow rectangular shape, and copper wire 2 along the Alpaka pipe circumferentially be screw type around, spacing B between copper wire 2 every circles is 2mm, copper wire 2 fixes with the outer wall of Alpaka pipe 1, specifically the outer wall at Alpaka pipe 1 is coated with the tin layer, the inside of copper wire 2 is equipped with copper wire 2 is fixed on solder stick 3 on Alpaka pipe 1 outer wall, solder stick 3 cross sections are rectangular, solder stick 3 on the copper wire 2 welds mutually with tin layer on Alpaka pipe 1 outer wall, in other words namely solder stick 3 is penetrated in the rectangular hollow section of copper wire 2 coileds, solder stick 3 is heated to the state that melts but do not trickle by welding gun again, solder stick 3 and tin layer on Alpaka pipe 1 outer wall are merged mutually, thereby copper wire 2 is fixed on the outer wall of Alpaka pipe 1.As preferred version, the tin thickness on Alpaka pipe 1 outer wall is 3 μ m.

The beneficial effects of the utility model are: the direct contact surface that 1) has increased air and Alpaka pipe is long-pending, strengthens heat exchange; 2) change the design of Alpaka pipe outboard structure, make the air side drag reduction, and increased the heat exchange area of air and copper wire; 3) compact conformation is compared with finned heat exchanger, and identical heat exchange amount heat exchange volume reduces 60%; 4) processing technology is simple, common lead welding and shaping.

In sum, the utility model by change the Alpaka pipe outer around the structural design of copper wire, the direct contact surface that has increased outside air and Alpaka pipe is long-pending, while air drag less, improve temperature in the flow process that air can be very short, strengthened heat exchange efficiency.The utility model also can be used as the air-treatment heat exchanger in the special heating field.

Above-described embodiment is described preferred embodiment of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. heat exchanger, it is characterized in that: comprise being the evenly Alpaka pipe (1) of coiling of screw type, uniform ring is wound with copper wire (2) on the outer wall of described Alpaka pipe (1), described copper wire turns to continuous hollow rectangular shape, and copper wire (2) fixes around, described copper wire (2) outer wall with Alpaka pipe (1) along the screw type that circumferentially is of Alpaka pipe.

2. heat exchanger according to claim 1, it is characterized in that: be coated with the tin layer on the outer wall of described Alpaka pipe (1), the inside of copper wire (2) is equipped with copper wire (2) is fixed on solder stick (3) on Alpaka pipe (1) outer wall, and the solder stick (3) on the copper wire (2) welds mutually with tin layer on Alpaka pipe (1) outer wall.

3. heat exchanger according to claim 1, it is characterized in that: the spacing A between the every circle of described Alpaka pipe (1) is 26mm.

4. heat exchanger according to claim 1, it is characterized in that: the spacing B between the every circle of described copper wire (2) is 2mm.

5. heat exchanger according to claim 2, it is characterized in that: described tin thickness is 3 μ m.

6. heat exchanger according to claim 1, it is characterized in that: described solder stick (3) cross section is rectangular.