The invention relates to a compressor air suction structure, a compressor and
refrigeration equipment. The compressor air suction structure comprises an air suction
pipe, an inner cylinder, a sealingring and a heat insulation filling part, wherein the outer side wall of the first end of the inner cylinder is connected with the inner side wall of the air suction
pipe in a buckled mode; the sealingring is arranged between the outer side wall of the second end of the inner cylinder and the inner side wall of the air suction
pipe; and the heat insulation filling part is arranged in a space formed by the sealing ring, the air suction pipe and the inner cylinder. According to the compressor air suction structure provided by the invention, an original air suction pipe with an independent pipe type structure is changed into a
composite structure with the inner cylinder and a heat
insulation layer, and heat on a compressor shell is isolated on an outer pipe of the air suction pipe through thecomposite structure with the heat
insulation layer at a certain length, so that the temperature of the inner cylinder of the air suction pipe is low, gas entering the compressor through the inner cylinder is prevented from being heated, the
refrigeration burden of the compressor is effectively relieved, and the
refrigeration efficiency of the compressor is improved.