R
R
R
e
e
e
f
f
f
r
r
r
i
i
i
g
g
g
e
e
e
r
r
r
a
a
a
t
t
t
i
i
i
n
n
n
g
g
g
C
C
C
i
i
i
r
r
r
c
c
c
u
u
u
i
i
i
t
t
t
The working of this machine is cyclical. Each cycle is divided into
two phases: ice cubes are produced during the first phase and fall
in the built-in bin during the second phase.
The following diagram shows the main concepts of the
refrigerating circuit:
Hot gas
valve
Suction line
Capillar Tube
Condenser
(Water)
Condenser
(Air)
Refrigerating
filter
Compressor
Evaporator
Cubes basin
Production Phase of the Ice Cubes
The hot gas valve is closed; the refrigerating fluid, after
having been cooled by the condenser, circulates through the
evaporator coil (welded to the cubes basin), and cools each
small copper cup.
Water is sprayed on the evaporator cubes-basin through the
spray-bar nozzles. An ice layer, due to the refrigerating fluid,
begins to form in the cups, till these are completely full (after
some minutes).
Ice Falling Phase (Defrosting)
Once the ice-production time is finished, the spray-bar stops
spraying water on the cubes-basin and the hot gas valve,
assembled on the compressor delivery side, opens.
This opening permits to pipe the refrigerating fluid (now
overheated, after the compression) directly to the evaporator,
without letting it pass through the condenser.
Due to such overheated fluid, the evaporator warms up and
the ice cubes formed in the cups, fall in the bin below.
At the end of the defrosting phase, the cycle starts again.
The compressor is always working: during both the production
and the defrosting phase.
Summary of Contents for ICE32A
Page 1: ...Mod ICE32A Production code CB316A 11 2007 ...
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