Improved air-cooled cold and hot water unit

Abstract

The invention discloses an improved air-cooled cold and hot water unit. The improved air-cooled cold and hot water unit comprises an air conditioning unit and a water tank, a water side heat exchanger of the air conditioning unit is connected with a client side through an outlet waterway and an inlet waterway to form a water circulation system, and a bypass is arranged between an inlet and an outlet of the client side; a control valve II capable of controlling on-off is arranged on the bypass; the water tank is connected to the inlet waterway or the outlet waterway in parallel; a control valve I capable of controlling on-off is arranged on a waterway between the inlet and the outlet of the water tank. According to the improved air-cooled cold and hot water unit, the refrigerating and heating speed of the unit in a starting up stage can be effectively increased in a starting stage, the user requirement is quickly met, and the comfort level of a user is improved. Meanwhile, in the defrosting process, large water temperature fluctuation of the client side can be avoided, and the user experience is improved.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to a chiller and hot water unit, in particular to an improved air-cooled chiller and hot water unit. Background technique [0002] At present, most of the existing air-cooled hot and cold water units install a water tank in the water system for energy storage and buffering, so as to reduce the frequent start and stop of the heat pump, and can use low-peak electricity to store heat. However, after the water system is added to the water tank, the capacity of the water system will increase, resulting in slower cooling and heating speeds when the unit is first started, affecting the use effect. Moreover, during the heating process, when the unit reaches the defrosting condition, the heat of defrosting comes from the hot water in the heating system, which makes the water temperature in the cooling system fluctuate greatly during the defrosting process, which is prone to cold wind and other p...

AI Technical Summary

Problems solved by technology

However, after the water system is added to the water tank, the capacity of the water system will increase, resulting in slower cooling and heating speeds when the unit is first started, affecting the use effect

Moreover, during the heating process, when the unit reaches the defrosting condition, the heat of defrosting comes from the hot water in the heating system, which makes the water temperature in the cooling system fluctuate greatly during the defrosting process, which is prone to cold wind and other phenomena, which brings bad consequences to the customer. to experience

Images