Heating control system and multi-line air-conditioning system containing the same manufacturing method

A heating control system, characterized in that it comprises a heat exchange assembly, the two ends of the high temperature flow path of the heat exchange assembly are respectively connected to the discharge side and the heating demand side of the compressor, and the heat exchange assembly Both ends of the low-temperature flow path are respectively connected with the gas-liquid separator and the suction side of the compressor. 2. The heating control system according to claim 1, wherein the low temperature flow path connected to the suction side of the compressor comprises a first branch circuit and a second branch circuit arranged in parallel, the first The branch circuit is connected to the suction port of the compressor, and the second branch circuit is connected to the enthalpy-increasing and supplementary gas port of the compressor. 3. The heating control system according to claim 2, wherein the first branch circuit and the second branch circuit are respectively provided with a first supplemental air solenoid valve and a second supplemental air solenoid valve. 4. The heating control system according to claim 1 or 2 or 3, wherein a capillary tube and a bypass solenoid valve are provided on the high temperature flow path close to the discharge side of the compressor. The heating control system according to claim 3, wherein the low-temperature flow path near the side of the gas-liquid separator is provided with a liquid discharge electronic expansion valve. 6. The heating control system according to claim 5, further comprising temperature sensors arranged at the inlet pipe of the gas-liquid separator, on the suction side of the compressor and in the environment, and arranged on the inlet pipe of the gas-liquid separator. Pressure sensor at the place. The heating control system according to claim 6, wherein the switching states of the first supplemental air solenoid valve and the second supplemental air solenoid valve are opposite. 8. The heating control system according to claim 7, characterized in that, the heating control system has two operating states, namely the liquid accumulation state and the liquid accumulation state, when the compressor suction When the temperature and the inlet pipe temperature of the gas-liquid separator are less than the set value, and the difference between the ambient temperature and the evaporating temperature at the inlet of the gas-liquid separator is greater than the set value, the heating control system is in a liquid-returning state. The first air supplement solenoid valve is opened; when the suction temperature of the compressor and the inlet pipe temperature of the gas-liquid separator are less than the set value, and the difference between the ambient temperature and the evaporation temperature of the gas-liquid separator inlet is less than the set value, all The heating control system is in a state of fluid accumulation and air supplement, and the second air supplement solenoid valve is opened. 9. The heating control system according to claim 1, wherein the heat exchange component is an economizer or a heat exchanger. 10. A multi-line air-conditioning system, characterized by comprising a compressor connected together by a refrigerant flow path, a plurality of indoor units, outdoor units and gas-liquid separators arranged in parallel, and a gas-liquid separator and Between the compressors as claimed in claim 1

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