The vacuum
composite structure mute constant-temperature file cabinet comprises a file cabinet shell, a supporting heat preservation partition plate divides the interior of the file cabinet shell into an upper cooling function area and a lower mechanical working area, a
metal box is arranged on the upper portion of the cooling function area, a
grating hole channel is formed in the bottom of the
metal box, and the outer side of the upper portion of the
metal box is covered with a heat preservation cover plate; an
evaporator is placed in the metal box, and an arc-shaped heat preservation layer is arranged on the inner side of the side wall of the cooling function area in a matched mode. A base plate is arranged at the bottom of the mechanical working area, a
shock absorber assembly is arranged on the base plate, and a condenser, a throttling valve and a compressor are arranged on the
shock absorber assembly. The
evaporator, the condenser, the throttling valve and the compressor are connected through pipelines, a temperature sensor is arranged in the cooling function area and is in
signal linkage with the compressor, and the temperature in the cooling function area is regulated and controlled to be kept within a set temperature range. By means of the multi-layer
composite structure, the excellent performance of all
layers of materials is effectively utilized, the overall heat preservation effect is remarkably improved, the
damper assembly is arranged, and
noise is reduced.