REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
F 25 B
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS (pumps, compressors F 04; use of heat pumps for domestic or space-heating or for domestic hot-water supply
F 24 D; air-conditioning, air-humidification F 24 F; fluid heaters using heat pumps F 24 H)
Notes
(1)
Attention is drawn to Note (2) following the title of subclass F 24 F. [5]
with compressor of reciprocating-piston type (F 25 B 1/10 takes precedence)
1
/
04
•
with compressor of rotary type (F 25 B 1/10 takes precedence)
1
/
047
•
•
of screw type [5]
1
/
053
•
•
of turbine type [5]
1
/
06
•
with compressor of jet type, e.g. using liquid under pressure (F 25 B 1/10 takes precedence)
1
/
08
•
•
using vapour under pressure
1
/
10
•
with multi-stage compression (with cascade operation F 25 B 7/00)
3
/
00
Self-contained rotary compression machines, i.e. with compressor, condenser, and evaporator rotating as a single unit
5
/
00
Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity (with cascade operation F 25 B 7/00)
5
/
02
•
arranged in parallel [5]
5
/
04
•
arranged in series [5]
6
/
00
Compression machines, plant, or systems, with several condenser circuits [5]
6
/
02
•
arranged in parallel [5]
6
/
04
•
arranged in series [5]
7
/
00
Compression machines, plant, or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit (F 25 B 9/00 takes precedence)
9
/
00
Compression machines, plant, or systems, in which the refrigerant is air or other gas of low boiling point
9
/
02
•
using Joule-Thompson effect; using vortex effect
9
/
04
•
•
using vortex effect [5]
9
/
06
•
using expanders (F 25 B 9/10 takes precedence) [5]
