Freeze-resistant type heat exchanger with three-dimensional air cavity
A heat exchanger and shell-and-tube heat exchanger technology is applied in the field of anti-freezing heat exchangers, which can solve the problems of heat exchangers that are not resistant to freezing, affect equipment operation and safety, and volume expansion, and achieve large heat exchange. , to achieve the effect of anti-freezing effect
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[0020] See Figure 1 to Figure 7 , The present invention discloses an antifreeze heat exchanger with a three-dimensional air cavity. It has a shell-and-tube heat exchanger with a built-in metal tube. The metal tubes in multiple parallel connections are coiled in the shell to be connected to each other by a large To the small concentric rings, the adjacent rings are separated by a sleeve. It also has a refrigerant outlet 1, a refrigerant inlet 2, a liquid refrigerant outlet 3, and a gas refrigerant inlet 4.
[0021] The sleeve used to isolate the metal tube can be made up of multiple cups with circular air cavities, or can be an open cylinder as the base surface, sleeved with a series of rings with one end contracted , Forming a series of air cavities, or superimposing special air cavities made by the partial gap of the shell.
[0022] As a preferred air cavity, its top must be sealed, and its lower end cavity is open or left with gaps or holes to ensure the smoot...
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