Variable-flow control device of air conditioner, air conditioning system and air conditioner control method

Abstract

The invention discloses a variable-flow control device of an air conditioner, an air conditioning system and an air conditioner control method, and belongs to the technical field of air conditioning systems. The variable-flow control device of the air conditioner, the air conditioning system and the air conditioner control method are designed for solving the problems that existing devices are high in power consumption and modifying cost and the like. According to the variable-flow control device of the air conditioner, a valve bank and a pump set are connected with a freezing water pipeline in series. The valve bank comprises at least one regulating valve and at least one electric valve, and all the regulating valves and the electric valves are connected in parallel. The pump set comprises at least two water pumps, and all the water pumps are connected in parallel. According to the variable-flow control device of the air conditioner, the air conditioning system and the air conditioner control method, the problem of high power consumption of water pumps is solved in a partial load operation state, overloading of the water pumps is avoided by adjusting the opening value of the regulating valves, and the technical problem that water pump motors cannot adapt to large-range flow and lift changes during double-pump parallel operation is solved; the cost is low, and control is easy; and the variable-flow control device of the air conditioner, the air conditioning system and the air conditioner control method adapt to refrigerating, heating and ventilation air conditioning machine rooms and also adapt to the fields of fire protection and water supply and drainage.

Description

Technical field [0001] The present invention relates to the technical field of air conditioning systems, and in particular to a variable flow control device of an air conditioner, an air conditioning system including the variable flow control device of the air conditioner, and an air conditioning control method based on the air conditioning system. Background technique [0002] In the air-conditioning system, the primary pump of the air-conditioning water system is mostly a constant-flow pump, especially in the old central air-conditioning system, almost all the constant-flow pump systems are used. When the air conditioning system is in partial load operation, the flow of the water pump cannot be reduced, resulting in the power of the water pump cannot be reduced and the power consumption of the water pump is large. [0003] The existing solution is to replace the constant flow pump system of the air conditioning system with a frequency conversion energy-saving system, that is, to ...

AI Technical Summary

Problems solved by technology

When the air conditioning system is in partial load operation, the flow rate of the water pump cannot be reduced, resulting in that the power of the water pump cannot be reduced, and the power consumption of the water pump is large.

[0003] The existing solution is to replace the constant flow pump system of the air conditioning system with a frequency conversion energy-saving system, that is, to replace the constant flow pump with a frequency conversion water pump. The disadvantage is that the transformation cost is high and the transformation period is long

Especially when the retrofit target is an old air-conditioning system, the retrofit cost is too high and the initial investment is too large, resulting in no retrofit value

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