The invention discloses a
heat pump type pressure gradient fruit vegetable heat treatment
library. The
library is composed of a
library entry, a
heat pump system, a circulation air
system and a humidifying
system, the library entry is divided into four parts of
air treatment, air supply plenum, fruit vegetable heat treatment and return air plenum. The upper end and the lower end of the
clapboard are respectively provided with three centrifugal fans and three pressure gradient fans, an air supply homogenizing plate and a return air
floor plate are respectively arranged at the upper part and the lower part in the library, and a fruit vegetable heat treatment chamber is formed between the two plates. An air supply
plenum chamber is formed between the air supply homogenizing plate and the upper top wall of the library entry, and a return air
plenum chamber is formed between the return air
floor plate and the lower bottom of the library entry. The condenser of the
heat pump system is arranged in an
air treatment chamber, a centrifugal humidifier is arranged above the right side of the
clapboard, and the return air
floor plate is placed with a fruit vegetable box. Pressure gradient air supply is adopted, so that
treatment time can be reduced. The invention adopts heat pump heat source, the heat pump can supply 3-5 units of heat into the library while a compressor consumes every 1 unit
electricity; compared with the
electric heating method, fruit vegetable heat treatment
energy consumption can be obviously reduced, and
energy conservation effect of the system is obvious.