Heat exchange structure of indoor unit and indoor unit provided with same

The utility model relates to an air-conditioning indoor unit, in particular to a heat exchange structure of an indoor unit and the indoor unit provided with the heat exchange structure. The utility model provides the heat exchange structure of the indoor unit provided with a backheating branch and the indoor unit provided with the heat exchange structure. The indoor unit comprises a heat exchanger; the heat exchanger is provided with a refrigerant side and a waterway side; the refrigerant side and the waterway side are used for heat exchange inside the heat exchanger; the refrigerant side comprises filters, an electronic expansion valve, a liquid side stop valve and a gas side stop valve which are connected in sequence to form a loop; a refrigerating device is arranged between the liquid side stop valve and the gas side stop valve; and the refrigerant side is arranged on the backheating branch between a gas side and a liquid side of the refrigerant side. The indoor unit adopting the heat exchange structure can increase the supercooling degree of refrigerants in front of the electronic expansion valve in the course of refrigeration, effectively increases the drop height between the indoor unit and an outdoor unit and prolongs the effective length of a distribution pipe, recovers the loss of refrigeration capacity caused by non-uniform refrigerant distribution in the refrigeration operation and increases the refrigeration capacity of a system; and as refrigerants flowing out of the indoor unit are subject to the backheating cycle, the superheat degree of the refrigerants flowing out of the indoor unit is increased, so that the liquid impact of a compressor can be effectively prevented, and the reliability of the system can be enhanced.