Efficient gas heat exchanger for transcritical CO2 heat pump system

The utility model discloses an efficient gas heat exchanger for a transcritical CO2 heat pump system, which belongs to a cooling device and comprises a gas inlet pipe and a gas outlet pipe, the gas inlet pipe is connected with the gas outlet pipe through a plurality of spiral cooling pipes, and each cooling pipe comprises an outer pipe for cooling liquid to pass through and an inner pipe for gas to pass through. The two inner pipes are sleeved with each outer pipe, the liquid inlet pipe and the liquid outlet pipe are connected to the outer pipes respectively, due to the fact that the cooling pipe is spiral, the contact time of cooling liquid and gas can be prolonged, the heat exchange effect is improved, the two inner pipes arranged in the outer pipes in parallel can also increase the contact area of gas-liquid exchange, and the heat exchange efficiency is improved. Therefore, the heat exchange effect is improved, and the problems that in the prior art, a gas cooler is complex in structure and not good enough