Heat pump style constant temperature humidifier

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PURPOSE : A heat pump type thermo-humidistat is provided to increase winter indoor temperature without using separate external power, thereby smoothly operating a condenser when outdoor temperature is rapidly dropped. CONSTITUTION : A heat pump type thermo-humidistat comprises a body housing(100), a cooling device(200), an evaporation humidifier(300), a re-heater(400), and a defrosting apparatus(500). The body housing comprises a sensor(102) and an air supply fan(104). The cooling device comprises a compressor(202), a condenser(204), an oil separator(206), a storage tank(208), a cooling coil(210), and a first expansion valve(212). One end of the cooling coil is connected to the storage tank and the other end of the cooling coil is connected to the compressor. The evaporation humidifier comprises a humidification water supply pipe which discharges water through a water spray nozzle, a humidification element, and a water tank. A re-heater comprises a heating coil(402) and a second expansion valve(404). One end of the defrosting apparatus is connected to the oil separator and the other end of the defrosting apparatus is connected to a pipe in the front end of the second expansion valve.