Gas-direct-contact-type ice slurry generator

Abstract

The invention discloses a gas-direct-contact-type ice slurry generator. The generator comprises a concentric annular spray-nozzle, a de-icer, a stirrer, a drive shaft, an ice outlet, and a driving motor. The concentric annular spray-nozzle is arranged at the lower end of a generator body. The drive shaft is arranged at the center of the generator body. The stirrer is arranged on the drive shaft. The driving motor is arranged above the generator body. The ice outlet is provided on the side wall on the upper part of the generator body. The upper end of the drive shaft is connected with the driving motor. The lower end of the drive shaft is connected with the de-icer. The de-icer comprises a support and de-icing blades. The de-icing blades are vertically arranged on the lower surface of the support. The support is provided with 1-3 arms. The lower ends of the de-icing blades extend into annular flow channels of the concentric annular spray-nozzle. The number of the de-icing blades on a single support arm is the same with that of the annular flow channels of the concentric annular spray-nozzle. An ice-making solution is provided in the generator body. With the generator provided by the invention, ice blockage can be effectively prevented, and system ice-making solution leakage can be reduced. The ice slurry is stirred, such that a heat exchange effect is reinforced. Therefore, the stable and highly efficient operation of the ice slurry preparation system is promoted.

Description

technical field [0001] The invention relates to the field of energy air conditioning, in particular to a gas direct contact type ice slurry generator. Background technique [0002] Gas direct contact method ice slurry production system [Patent No. ZL 2009 1 0102116.5] uses air, nitrogen and other environmentally friendly working fluids as refrigerants to directly contact and exchange heat with ice-making solution to produce ice slurry. The use of gas as the refrigerant can reduce system investment and maintenance costs, and at the same time avoid the problem of cold storage liquid pollution caused by the liquid refrigerant dissolving into the ice-making solution. [0003] However, the aforementioned ice slurry production system has the following problems: 1. After the ice-making solution at the nozzle of the ice slurry generator is overcooled, the ice crystals accumulate seriously, and ice blockage is very easy to occur, which affects the stable operation of the system; 2. T...

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Problems solved by technology

[0003] However, the aforementioned ice slurry production system has the following problems: 1. After the ice-making solution at the nozzle of the ice slurry generator is overcooled, the ice crystals accumulate seriously, and ice blockage is very easy to occur, which affects the stable operation of the system; 2. The ice slurry generator contains ice. When the cooling rate (IPF) increases, the convective heat transfer effect between the cooling gas and the ice-making solution is weakened, which affects the heat transfer efficiency of the system; 3. During the operation of the system, the ice-making solution leaks a lot from the nozzle, and the maintenance cost increases

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