Industrial explosion-proof air conditioning works

Industrial explosion-proof air conditioning works:

When operating in a cooling condition, the three-way valve is reversed to turn the components on. At this time, the indoor heat exchanger becomes an evaporator, and the outdoor heat exchanger becomes a condenser. The low-temperature and low-pressure superheated gas from the indoor heat exchanger enters the gas-liquid separator through the four-way valve and the muffler. After the liquid is separated, the hot gas is sucked and compressed by the compressor to become a high-temperature and high-pressure gas, and the gas enters the outdoor through the four-way valve. The heat exchanger condenses and becomes a supercooled liquid. After the supercooled liquid is depressurized by capillary resistance, it becomes a low-temperature and low-pressure two-phase fluid, and enters the indoor heat exchanger to evaporate and absorb heat (the indoor air is cooled), and once again enters the next cycle through the four-way valve and the gas-liquid separator: filter It is mainly used for the separation of refrigerant and compressor oil to ensure the heat exchange efficiency of the heat exchanger.

When the heat pump type air conditioner is operated in the heating condition, the four-way valve is reversed so that the broken line in the figure is turned on. At this time, the indoor heat exchanger becomes a condenser, and the outdoor heat exchanger becomes an evaporator. The low-temperature and low-pressure superheated gas from the outdoor heat exchanger enters the gas-liquid separator through the four-way valve and the muffler, and after the liquid is separated, the dry superheated gas is sucked and compressed by the compressor into a high-temperature and high-pressure gas, and the gas enters through the four-way valve. The indoor heat exchanger is exothermic and condensed (at this time, the indoor air is heated). It becomes a supercooled liquid, and the supercooled liquid is depressurized by capillary resistance to become a low-temperature low-pressure two-phase fluid. It enters the outdoor heat exchanger to evaporate heat, and then the superheated gas The next cycle is entered via a four-way valve and a gas-liquid separator. In order to prevent the indoor comfort from degrading due to defrosting during heating, a hot gas bypass uninterrupted heating and defrosting method is adopted. In the case of defrosting, the operating principle is basically the same as heating, except that the defrost solenoid valve is opened. A part of the high-temperature and high-pressure superheated gas from the compressor is diverted to the inlet of the outdoor heat exchanger, and the temperature of the outdoor heat exchanger is rapidly increased to above O °C, and the frost layer on the outdoor heat exchanger is melted to make the heat exchange The device maintains good heat transfer efficiency.

Industrial explosion-proof air conditioners maintain explosion-proof treatment of electrical systems, including compressors, fans and electrical circuits, on the basis of ordinary air conditioners. The control circuit adopts the electrical system with the photocoupled solid state relay as the core to carry out the overall explosion-proof. The original function of the original air conditioner is maintained, the structure is simplified, the operation is simplified, and the equipment can be safely used in the mixed gas environment.