Water chilling unit load output stepless regulation control method and water chilling unit

The invention discloses a water chilling unit load output stepless regulation control method and a water chilling unit. The control method comprises the following steps that when the compressor outputis in the lowest load operating state, the non-polar adjustment of system load unloading or system load loading is achieved by refrigerant coupling heat exchange between a condenser and an evaporator. The refrigerant coupling heat exchange includes the water chilling unit refrigeration cycle heat exchange and the heat exchange of gas and/or liquid state between the condenser and the evaporator. According to the water chilling unit load output stepless regulation control method, the stepless regulation of 0% to 100% of the system load under the condition that the water chilling unit is not stopped, quick loading can be carried out when the load is increased, and the response speed is high. 本发明公开了一种冷水机组负荷输出无极调节控制方法及冷水机组。所述的控制方法当压缩机输出在最低负荷运行状态时，通过冷凝器和蒸发器之间的制冷剂耦合换热实现系统负荷卸载或系统负荷加载的无极调节。所述的制冷剂耦合换热包括冷水机组制冷循环换热和冷凝器与蒸发器之间