Absorption diffusion type refrigerating structure

An absorption diffusion type refrigerating structure, comprising:

• a concentrated ammonia aqueous solution tank for receiving concentrated ammonia aqueous solution;
• a concentrated ammonia aqueous solution pipe for guiding out concentrated ammonia aqueous solution from said concentrated ammonia aqueous solution tank, another end of said concentrated ammonia aqueous solution pips having an opening;
• a diluted ammonia aqueous solution pipe sleeved outside said concentrated ammonia aqueous solution pipe and passing across the other end of said concentrated ammonia aqueous solution pipe;
• a generator having a heater, said heater abutting on said diluted ammonia aqueous solution pipe so that said diluted ammonia aqueous solution pipe can conduct heat to said concentrated ammonia aqueous solution pipe to let said concentrated ammonia aqueous solution pipe generate vapor;
• a separator for separating vapor and liquid, said separator being formed between the open end of said concentrated ammonia aqueous solution pipe and said diluted ammonia aqueous solution pipe;
• a rectifier connected with said diluted ammonia aqueous solution pipe to let part of the vapor leaving said separator condense into liquid and then flow back;
• a condenser connected with said rectifier to let vapor condense into liquid;
• an ammonia liquid pipe, one end thereof being joined at a distal end of said condenser, and the other end thereof being an opening, a liquid-shutting loop forming between the two ends of said ammonia liquid pipe;
• a diluted ammonia aqueous solution reflow pipe led out from said diluted ammonia aqueous solution pipe near said concentrated ammonia aqueous solution tank;
• an absorber, having a lower end thereof being connected with said concentrated ammonia aqueous solution tank and said diluted ammonia aqueous solution reflow pipe, the joining position of said absorber with said diluted ammonia aqueous solution reflow pipe being lower than said opening of said concentrated ammonia aqueous solution pipe in said separator, said absorber being used to let diluted ammonia aqueous solution react to become into concentrated ammonia aqueous solution, said absorber being connected with an airway, said airway being disposed downwards, ammonia vapor and hydrogen gas passing through said absorber entering said airway to let ammonia vapor condense into ammonia liquid, said airway being connected with an ammonia liquid guide pipe, the other end of said ammonia liquid guide pipe being connected to a region below the liquid face of said concentrated ammonia aqueous solution tank;
• a hydrogen pipe, one end thereof being connected to the other end of said airway and disposed upwards, the other end thereof being an opening;
• and
• an evaporator having a pipeline, the upper end of said pipeline being closed, the lower end of said pipeline being connected with said concentrated ammonia aqueous solution tank, a rear section of said hydrogen pipe and said ammonia liquid pipe being inserted into said pipeline of said evaporator from near the lower end and extending to the closed end along said pipeline, the open end of said ammonia liquid pipe being lower than the position where said ammonia liquid pipe joins the distal end of said condenser, ammonia liquid and hydrogen gas being simultaneously released out from the closed end of said evaporator to let ammonia liquid absorb heat and perform reaction of heat exchange, the generated ammonia vapor and hydrogen gas then flowing back to be discharged into said concentrated ammonia aqueous solution tank.