Deep frost prevention system under condition that air-cooling module machine water circulation unit is broken down

Abstract

The invention discloses a deep frost prevention system under the condition that an air-cooling module machine water circulation unit is broken down, and belongs to the technical field of module unit frost prevention. The deep frost prevention system comprises a fan, an evaporator, a four-way valve, a compressor, a water heat exchanger, a water tank and a controller; a water pump current transformer is arranged in the controller; flow sensors are arranged at the water inflow end and the water outflow end of the water heat exchanger; flow regulating valves are arranged on a water outflow pipe; aliquid level sensor is arranged in the water tank; an environment temperature sensor is arranged on the surface of the evaporator; a water inflow temperature sensor is arranged on one end side, wherea water inflow pipe is connected, of the water inflow pipe; an economizer is arranged on a connecting passage between the water heat exchanger and the evaporator; a exhaust temperature sensor and a high-voltage switch are arranged on an exhaust pipe of the compressor; and a water heat exchanger temperature sensor is arranged on a connecting passage between the water heat exchanger and the evaporator. The system is reasonable and optimizing in structure, and is convenient in application, the problem that a unit can not prevent frost when a water circulation passage is broken down is solved, and the system adapts to various forms of water heat exchangers on a module unit.

Description

technical field [0001] The invention relates to the technical field of antifreeze of modular units, in particular to a deep antifreeze system under the fault condition of the water circulation unit of an air-cooled modular unit. Background technique [0002] As we all know, the antifreeze function of the existing modular units is to prevent freezing through the circulating water of the water pump and the heating of the modular units or the heating of the electric auxiliary heating water supply. In the state of being unable to prevent freezing, the electric auxiliary heat cannot heat the water in the water heat exchanger, which will cause the water heat exchanger to freeze and crack, and then cause water to enter the fluorine circuit of the unit, which may cause the whole machine to be scrapped. Therefore, it is necessary to develop an antifreeze control system that can still prevent the water heat exchanger from freezing when the water circulation unit of the air-cooled modu...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a deep antifreeze system under the condition of failure of the water circulation unit of the air-cooled modular unit, which solves the problem that the unit cannot prevent freezing when the water circulation channel fails, and is suitable for various forms of water on the modular unit. Heat Exchanger

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