CLEARPOINT Heater. Compressed Air Filter Heater Based on Ohm Resistance

Transcription

1 Compressed Air Filter Heater Based on Ohm Resistance

2 Function

3 CLEARPOINT S055TWC Design CLEARPOINT Filter housing parts (aluminum) Electric housing (plastic) Bottom part (brass), heating elements and casing for the temperature sensor fixed Connection cable to the power supply (PG-connector, plastic) Fastening plates (aluminum and stainless steel)

4 CLEARPOINT S055TWC Design Heating elements (ohmic resistance) Center tube Temperature sensor (inside the casing) Printed circuit board (PCB) Temperature adjustment Overpressure protection

5 Function Old design New design Compressed air enters through the head and flows downwards through the center tube.... between housing and center tube.

6 Function Old design New design In the bottom area the compressed air turns and flows in reverse direction upwards between housing and center tube.... through the center tube.

7 Function Old design New design In effect it leads to a better heat exchange efficiency but Flow direction of the compressed air is a result of the position of the temperature sensor

8 Benefits

9 Old design New design In effect it leads to a better heat exchange efficiency

10 Temperature Adjustment Adjustment for a stable outlet temperature between 30 to 60 C 30 C up to 1800 l/min 40 C up to 650 l/min 50 C up to 350 l/min 60 C up to 250 l/min

11 Temperature Adjustment Outlet Temperature ( C) Adjustment for a stable outlet temperature 30 C up to 100 m³/h 40 C up to 40 m³/h 50 C up to 24 m³/h 60 C up to 15 m³/h Performance chart : - inlet temperature 20 C - ambient temperature 20 C Flow rate (m³/h)

12 Design of the Heating Element

13 Design of the Heating Element Filling material (Magnesium oxide) = Insulation material Heat conductor Housing (stainless steel) Heating coil (Chrome-Nickel alloy) Welding point Insulation (ceramics), glued into the housing Cable connecting bolt (sintered into the ceramics)

14 Heating Element (Ohm Resistance) Differences to the old style : - ohmic resistance device - lower material burden (temperature) - bigger heat exchange area - production of the heating elements easier to handle Result : Much better reliability.

15 General and Electrical Safety IP-Class 54 : - dust protection - protection against splash water Sealing to the compressed air area by welding parts Sealing to the ambient by O-rings PG- connection to wire (additional traction relief) IP 54

16 Electrical Safety Grounding equipment conductor In worst case, a metallic contact leads to the grounding (short-circuit and shut-off by the fuse) Permanent contact from the housing of the heating element to the grounding conductor Grounding conductor wire is longer than the wires for the power supply

17 Over Pressure Safety in IP-area Burst protection Prevention of over pressure in the electric housing (IP 54) feasible leakages at welded parts Overpressure protection by a semipermeable part (prevents pressure in this area) IP 54

18 Safety Against Internal Leakages Protection against leakages weak points at high temperatures are head cover (plastic material) and slide closure of the orifices on the filter head and bowl by steel balls

19 Safety Temperature Touch protection Housing temperature up to 100 C while standstill possible (at ambient and medium temperature of 50 C) Warning sticker Touch protection for the device

20 Safety Temperature Touch protection Housing temperature up to 100 C while standstill possible (at ambient and medium temperature of 50 C) Warning sticker Touch protection for the device Easy to fit from outside (screws on the top of the filter head)

21 System Concept Compressed Air Treatment for the Spraying Industry

22 General Demands Basis components Filtration (stages) Drying of compressed air (Absorption of oil vapor) Pressure regulation Compressed air heating Transport to the point of use (spray gun) Option Plug and play (frame) General control system Display for operation conditions (outlet)

23 System Components of a Unit Wall brackets Pressure regulator with manometer downstream of the filter heater leads to a more efficient heat exchange: Filter 0.01 µm - flow speed according nominal flow rate - contact time according nominal flow rate - temperature max. 60 C Membrane dryer Activated carbon Filter (cartridge) Filter heater S055 TWC

24 Down Graduated Unit Filter 0.01 µm Membrane Dryer Standard Filter heater S055 TWC Pressure regulator with manometer

25 Down Graduated Unit Membrane Dryer Plus-version Filter heater S055 TWC Pressure regulator with manometer

26 Beat the Competition Walmec-unit - filter combination - single tower desiccant dryer - pressure regulator compressed air - filter heater - pressure regulator regeneration air - control board - heated pipe work (Ex-proofed) Regeneration of the desiccant dryer : - a few hours over night, controlled by the control board - regeneration air heated up by the heater (it should not run unsupervised)