Blocks traversed by passages for heat-exchange media
9
/
00
Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
9
/
007
•
Auxiliary supports for elements [6]
9
/
013
•
•
for tubes or tube-assemblies [6]
9
/
02
•
Header boxes; End plates
9
/
04
•
•
Arrangements for sealing elements into header boxes or end plates (joining pipes to walls in general F 16 L 41/00)
9
/
06
•
•
•
by dismountable joints
9
/
08
•
•
•
•
by wedge-type connections, e.g. taper ferrule
9
/
10
•
•
•
•
by screw-type connections, e.g. gland
9
/
12
•
•
•
•
by flange-type connections
9
/
14
•
•
•
•
by force-joining
9
/
16
•
•
•
by permanent joints, e.g. by rolling (metal-working procedures in general B 21,
B 23, particularly B 21 D 39/06, B 23 K)
9
/
18
•
•
•
•
by welding
9
/
20
•
Arrangements of heat reflectors, e.g. separately-insertible reflecting walls
9
/
22
•
Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
9
/
24
•
Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates (F 28 F 1/38 takes precedence; in general F 15 D)
9
/
26
•
Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators (connecting different sections in water heaters F 24 H 9/14)
11
/
00
Arrangements for sealing leaky tubes or conduits (stopping flow from or in pipes in general F 16 L 55/10)
11
/
02
•
using obturating elements, e.g. washers, inserted and operated independently of each other (F 28 F 11/06 takes precedence)
11
/
04
•
using pairs of obturating elements, e.g. washers, mounted upon central operating rods (F 28 F 11/06 takes precedence)
11
/
06
•
using automatic tube-obturating appliances
13
/
00
Arrangements for modifying heat transfer, e.g. increasing, decreasing (F 28 F 1/00 to F 28 F 11/00 take precedence)
13
/
02
•
by influencing fluid boundary (boundary-layer control in general
F 15 D)
13
/
04
•
by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
13
/
06
•
by affecting the pattern of flow of the heat-exchange media
13
/
08
•
•
by varying the cross-section of the flow channels
13
/
10
•
•
by imparting a pulsating motion to the flow, e.g. by sonic vibration
13
/
12
•
•
by creating turbulence, e.g. by stirring, by increasing the force of circulation (F 28 F 13/08 takes precedence)
13
/
14
•
by endowing the walls of conduits with zones of different degrees of conduction of heat
13
/
16
•
by applying an electrostatic field to the body of the heat-exchange medium
13
/
18
•
by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
17
/
00
Removing ice or water from heat-exchange apparatus
19
/
00
Preventing the formation of deposits or corrosion, e.g. by using filters
19
/
01
•
by using means for separating solid materials from heat-exchange fluids, e.g. filters [6]
19
/
02
•
by using coatings, e.g. vitreous or enamel coatings
19
/
04
•
•
of rubber; of plastics material; of varnish
19
/
06
•
•
of metal
21
/
00
Constructions of heat-exchange apparatus characterised by the selection of particular materials
21
/
02
•
of carbon, e.g. graphite
21
/
04
•
of ceramic; of concrete; of natural stone
21
/
06
•
of plastics material
21
/
08
•
of metal
23
/
00
Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
23
/
02
•
Arrangements for obtaining or maintaining same in a liquid state
25
/
00
Component parts of trickle coolers (arrangements for increasing heat transfer F 28 F 13/00; controlling arrangements F 28 F 27/00)
25
/
02
•
for distributing, circulating, or accumulating liquid (spraying or atomising in general B 05 B, B 05 D)
25
/
04
•
•
Distributing or accumulator troughs
25
/
06
•
•
Spray nozzles or spray pipes
25
/
08
•
•
Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface (packing elements in general B 01 J 19/30, B 01 J 19/32)
25
/
10
•
for feeding gas or vapour
25
/
12
•
•
Ducts; Guide vanes, e.g. for carrying currents to distinct zones
27
/
00
Control arrangements specially adapted for heat-exchange or heat-transfer apparatus (control arrangements in general G 05)
27
/
02
•
for controlling the distribution of heat-exchange media between different channels (arrangements of guide plates or guide vanes F 28 F 9/22, F 28 F 25/12)
