Small-size leakproof independently-operating ammonia refrigerator

The invention discloses a small-size leakproof independently-operating ammonia refrigerator, and aims to provide the ammonia refrigerator which can absorb an ammonia refrigerating fluid which is likely to leak through a cooling liquid or freezing liquid, and can ensure that the refrigerator safely operates. According to the small-size leakproof independently-operating ammonia refrigerator disclosed by the invention, an evaporator is arranged in a refrigerating liquid storage box; a condenser is arranged in a cooling liquid storage box; the outlet of the refrigerating liquid storage box is connected with the inlet of an air cooler through a refrigerating liquid circulation pump; the outlet of the air cooler is connected with the inlet of the refrigerating liquid storage box through a gas return double-pipe heat exchanger; the outlet of the cooling liquid storage box is connected with the inlet of a cooler through a gas exhaust double-pipe heat exchanger; the outlet of the cooler is connected with the inlet of the cooling liquid storage box through a cooling liquid circulation pump; a gas exhaust pipe between a compressor and the condenser is arranged in the gas exhaust double-pipe heat exchanger; and a gas return pipe between the compressor and the evaporator is arranged in the gas return double-pipe heat exchanger. According to the refrigerator disclosed by the invention, the leakage of the ammonia refrigerating fluid is avoided during an ammonia refrigerating circulation process, and the use safety is ensured.