Spiral heat exchanger

Abstract

The invention relates to a spiral heat exchanger. The spiral heat exchanger comprises a mandrel with the axis extending leftwards and rightwards, and liquid flowing winding belts which are spirally wound around the periphery of the mandrel by at least two circles and internally provided with spiral liquid channels; and the liquid flowing winding belts of any two adjacent ring layers are spaced bya certain distance, so that a spiral air flowing channel which is through left and right is formed, a liquid channel separation strip which extends left and right is arranged in each liquid flowing winding belt, the liquid channel separation strips separate the spiral liquid channels into a plurality of liquid flow branch channels which are sequentially arranged in the spiral direction and are isolated from one another, the inner side end and the outer side end of each liquid flow branch channel in the spiral direction are provided with a first liquid inlet and outlet connector and a second liquid inlet and outlet connector respectively, wherein the first liquid inlet and outlet connectors and the second liquid inlet and outlet connectors are in communication through the liquid flow branchchannels. The heat exchanger is large in heat exchange amount and high in heat exchange efficiency.

Description

technical field [0001] The application relates to the field of heat exchange, in particular to a spiral heat exchanger. Background technique [0002] Heat exchanger refers to the equipment that transfers the heat of hot fluid to cold fluid. Heat exchanger has important applications in life and industrial production. Due to the pursuit of larger heat exchange area, traditional heat exchangers generally occupy a large area , so it has the disadvantages of high requirements for installation space and inconvenient maintenance. Therefore, on the premise of ensuring sufficient heat exchange area, how to reduce the volume of the heat exchanger is an urgent problem to be solved in the industry. [0003] The Chinese utility model patent with the patent number CN201520085162.X discloses a new type of spiral plate reaction heat exchanger, including a first thin plate, a second thin plate, an intermediate partition and an outer cylinder, wherein the first thin plate and the second thin...

AI Technical Summary

Problems solved by technology

The hot fluid and the cold fluid move in the hot fluid channel and the cold fluid channel respectively along the helical curling direction for a long distance. During the movement, the moving direction of the fluid is changing all the time, and there will be a large interaction between the thin plate and the heat exchange fluid. Force, so that the flow resistance of the fluid in the flow channel is relatively large, which is not suitable for heat exchange of gaseous fluids

[0005] 2. High maintenance frequency

Taking the hot fluid flow channel as an example, the problem with a single flow channel is that if a certain position of the hot fluid flow channel is blocked, it will affect the transportation of the hot fluid in the entire hot fluid flow channel. The heat exchanger cannot work normally, that is, as long as there is a blockage in the hot fluid flow channel, the staff will need to maintain the heat exchanger, and the maintenance frequency is high

[0006] 3. This heat exchanger is a multi-layer spiral wound structure. In order to perform sufficient heat exchange and obtain high heat exchange efficiency, the structure usually winds multiple layers, making the radial dimension too large. When the heat exchanger is installed When the heat exchanger is installed, it is necessary to provide a large radial space for installing the heat exchanger, which cannot realize the concealed installation of the heat exchanger in some occasions where the radial space is limited

[0007] 4. As mentioned above, in order to perform sufficient heat exchange and obtain higher heat exchange efficiency, the structure is usually wound with multiple layers to increase the internal fluid movement stroke, and because of the spiral flow channel, the internal resistance is large, so the When clogged, the clog is extremely difficult to clear

If the fluid flow rate is increased by increasing the cross-sectional area of ​​the spiral flow channel, the heat exchange area of ​​the heat exchanger of the same size will be greatly reduced

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