Hitachi Oil Free

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Hitachi Oil Free

  1. 1. New series OIL- OIL-FREE ROTARY SCREW COMPRESSOR 1
  2. 2. New DSP series 2
  3. 3. HITACHI OIL-FREE ROTARY SCREW COMPRESSOR(1) AIR END STRUCTURE Pinion Gear Male Rotor Air Seal Bearing Visco Seal Bearing Female Rotor Cooling Jacket Casing Timing Gear 3
  4. 4. HITACHI OIL-FREE ROTARY SCREW COMPRESSOR (3) AIR END STRUCTURE Stainless Fine Rotor Shaft SealsThe rotor profile is a Hitachi original. It Visco-type seals prevent the oil fromhas a geometrical shape in order to entering the compressor chamber whileminimize internal leakage. carbon rings seal the air end. 4
  5. 5. HITACHI OIL-FREE ROTARY SCREW COMPRESSOR(4) AIR END STRUCTURE Bearing Timing GearSpecially designed ball and roller bearings A pair of timing gears are preciselyare oversized and precisely made. finished and balanced dynamically to assure optimum rotor clearance. 5
  6. 6. HITACHI OIL-FREE ROTARY SCREW COMPRESSOR (5) DSP TECHNOLOGY, GUARDED BY PATENTS1 Rotor Profile and Air End Design 2 Single-stage DSP Precooler Rotor profile which allows heat expansion Air End High Performance Precooler To Aftercooler Visco Seal Check Valve Oil Free With the patent of Precooler,single-stage Oil- Air End free Screw Compressor capable of producing 2 Design discharge air pressure as high as 7kgf/cm (g) is Registration completed. 6
  7. 7. HITACHI OIL-FREE ROTARY SCREW COMPRESSOR (6) DSP TECHNOLOGY, GUARDED BY PATENTS3 Air-cooled Coolant System 4 Air-cooled Hi Precooler Pressure Cap Exhaust Coolant Coolant cooler Cooler Intake Hi- Air Intake Air Precooler Cooling Fan Air End Reservoir CoolingAir End Tank Fan Oil Cooler Discharge Pipe CheckCoolant ValvePump Aftercooler ● Hi-Precooler allows air cooling of large size models. Air-cooled type Oil-Free Screw models ● If applied in a two-stage model, air have been developed. discharge pressure, 9kgf/cm2(g), can be achieved. 7
  8. 8. CONSTRUCTION 55kW New DSP, Air-cooled Single stageSuction throttle valve Circuit Board (increased functions) Cooling Fan (1.5kW 0.9kW) Motor Gear Case Cooler V-belt Oil Filter Air End (4 TEFC) (30%smaller) (V-ribbed belt) (built-in) FRONT BACK 8
  9. 9. OPERATIONEnergy saving operation --- Automatically regulates unload pressure and promotes energy saving.Scheduled operation --- Can be operated automatically at programmed start / stop time.Dual control operation --- Provides dual operation without an outside control panel. (option)Operating data memory --- Records operating data for 12 days in memory, which can be read out.Shutdown history memory --- Records shutdown history and each operating condition in memory for quick trouble shooting.Communication --- Operating data can be sent to a personal computer via RS232C port.Automatic restart at momentary power failure, Automatic stop and restart operation, andSteproller can be provided as an option. 9
  10. 10. 10 s04 EM I T   D A O L N U A002 A002 A002 A002 : TN E R RU C : TN E R RU C : TN E R RU C : TN E R RU C 16 : . SON   D AO L s04 EM I T   D A O L h014 : RH   D A O Lbe modified. %05 %05 E T A R  D AO L E T A R  D AO L ℃*** : PM E T . T C U S   D N 2 ℃*** : PM E T . T C U S   D N 2 ℃*** : PM E T . T C U S   D N 2 * h 0 8 5 ℃*** : PM E T . T C U S   D N 2 : RH  NU Rdisplay may r a e Y 5 . 0 T N AM   T X E N r a e Y 5 . 0 T N AM   T X E N r a e Y 5 . 0 T N IIII AM   T X E N r a e Y 5 . 0 T N AM   T X E N ℃ 2 4   : PM E T   T N A L O O C ℃ 2 4   : PM E T   T N A L O O C ℃ 2 4   : PM E T   T N A L O O C ℃ 2 4   : PM E T   T N A L O O C a PM 5 2 . 0 a PM 5 2 . 0 : S SER P .T LC a PM 5 2 . 0 : S S E R P . T L C a PM 5 2 . 0 : S S E R P . T L C : S SER P .T LC h0243 h0243 h0243 h0243 T N AM   O T . R H T N AM   O T . R H T N IIII AM   O T . R H T N AM   O T . R H ℃25 ℃25 ℃25 ℃25 : PM E T   L O : PM E T   L O : PM E T   L IIII O : PM E T   L O a PM 5 1 . 0 a PM 5 1 . 0 :SSERP   L O a PM 5 1 . 0 : S S E R P   L IIII O a PM 5 1 . 0 : S S E R P   L O :SSERP   L Omonitor 2 2/ 6 0/ 9 9 9 1 2 2/ 6 0/ 9 9 9 1 2 2/ 6 0/ 9 9 9 1 2 2/ 6 0/ 9 9 9 1 : E TAD : E TAD : E TAD : E TAD ℃*** ℃*** ℃*** ℃*** : 2 . PM E T . S D : 2 . PM E T . S D : 2 . PM E T . S IIII D : 2 . PM E T . S D a PM** .* a PM** .* a PM** .* a PM** .* : P .G T S TN : P .G T S TN : P . G T S T N IIII : P .G T S TNThe content of ℃063 ℃063 ℃063 ℃063 : 1 . PM E T . S D : 1 . PM E T . S D : 1 . PM E T . S IIII D : 1 . PM E T . S D(Note) a PM 9 6 . 0 a PM 9 6 . 0 :SSERP.S D a PM 9 6 . 0 : S S E R P . S IIII D a PM 9 6 . 0 : S S E R P . S D :SSERP.S D a PM 9 6 . 0 : S S E R P . S I D a PM 9 6 . 0 a PM 9 6 . 0 :SSERP .S D a PM 9 6 . 0 : S S E R P . S IIII D a PM 9 6 . 0 : S S E R P . S D :SSERP .S D S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S S- U N AM- L G N S E V A S   U T-* E T N : E P Y T E V A S   U T-* E T N : E P Y T E V A S   U T-* E T N III : E P Y T E V A S   U T-* E T N : E P Y T *01 :01 E V A S   U T-* E T N : E P Y T * 0 1E:V0A1S   U T-* E T N IIII : E P Y T M E V A S   U T-* E T N : E P Y T * 0 1E:V0A1S   U T-* E T N : E P Y T M E V A S   U T-* E T N : E P Y T * 0 1E:V0A1S   U T-* E T N : E P Y T M * 01 :01 * 01 :01 2M 3M * 0 1E:V0A1S   U T-* E T N IIII : E P Y T M * 0 1 : 0 1 * 01 :01 2M 2M 2 1 1M 1 1 Monitor display 1 LCD display - example Monitor display 3 Monitor display 2 load ratio, operating hours • List display - pressure, temperature, current, • 320 x 240 dot large size display for easy viewing. LCD monitor OPERATION
  11. 11. 11modified.may bedisplaymonitorcontent ofThe(Note)   N OM N OM K C A B : N OM N OM N E PO :         TES TES TES TES   N OM N OM K C A B : N OM N OM N E PO :         TES TES TES TES LO R TNO C   Y T I CA PA C .6 C E R . D/ E V A S . R W P .5 A TADDAO L A TADDAO L A TADDAO L A TADDAO L .4 .4 .4 .4 E LU D EH C S .4 A TAD  NO I TA R E PO A TAD  NO I TA R E PO A TAD  NO I TA R E PO A TAD  NO I TA R E PO .3 .3 .3 .3 T I N U- I T L UM T I N U- I T L UM T I N U- I T L UM T I N U- I T L UM .3 .3 .3 .3 Y R O T S I H N  W O D T U H S Y R O T S I H N  W O D T U H S .2 .2 R E Y R D/ E T OM E R R E Y R D/ E T OM E R .2 .2 R E Y R D/ E T OM E R R E Y R D/ E T OM E R .2 .2 PU T E S   C I S A B 1 .1 1 1 1 I P I/ P O T S- D A O L N U I P I/ P O T S- D A O L N U I P I/ P O T S- D A O L N U I P I/ P O T S- D A O L N U 1 1 1 1 .1 .1 .1 .1 ] U N EM   A T A D . T N I AM [ ] U N EM   N O I T C N U F [ Reference switch Function switch OPERATION
  12. 12. Power Save Function Power save function ・・・ Automatically decrease cut-out pressure and save power by lowering the average operating pressure.When POWER SAVE mode is selected, cut-out pressure falls down automatically so that repetition time of unload and load becomes shorter to fit in a time limit. Cut-out. pressure Cut-out press. (unload start)Line Pressure is lowered. Cut-in pressure (unload stop) Time Limit : Load Unload Saved energy Min. 30 sec. (Adjustable) Time 12
  13. 13. Time10:00 12:00 14:00 16:00 18:00 20:00 22:00 24:00 13 8:00 6:00 4:00 2:00 0:00 STOP STOP STOP STOP 5 4 3 2 1 STOP STOP RUN RUN RUN RUN RUN Break Break Break Example Lunch break KCA B :   KCA B :     K C A B : N OM E RO T S :         E RO T S :         E RO T S :         TESsave energy. N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 . . . . 7 7 7 7 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 . . . . 6 6 6 6having these START/STOP time booked and N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 N 00 :00 . . . . 5 5 5 5 Y 00 :21 Y 00 :21 Y 00 :21 Y 00 :21 Y 01 :01 Y 01 :01 Y 01 :01 Y 01 :01 . . . . 4 4 4 4 Y 00 :01 Y 00 :01 Y 00 :01 Y 00 :01 Y 00 :01 Y 00 :01 Y 00 :01 Y 00 :01 Y 02 :80 Y 02 :80 Y 02 :80 Y 02 :80 Y 02 :80 Y 02 :80 Y 02 :80 Y 02 :80 . . . . . . . . 3 3 3 3 3 3 3 3can stop the compressor automatically byDuring lunch time and breaks, for example, you PO T S PO T S PO T S PO T S T RA T S T RA T S T RA T S T RA T S ) 0 3 : 8 0     EM I T ( ) 0 3 : 8 0     EM I T ( ) 0 3 : 8 0     EM I T ( ) 0 3 : 8 0     EM I T (book up to 5 sets of START/STOP time. F FO F FO F FO F FO :GN I T T E S . T X E :GN I T T E S . T X E :GN I T T E S . T X E :GN I T T E S . T X E .2 .2 .2 .2 E LU D EH C S E LU D EH C S E LU D EH C S E LU D EH C S : E D OM : E D OM : E D OM : E D OM 1 .1 .1 .1 .1On the SCHEDULE SETTING display, you can ] GN I T T E S   E LU D EH C S [ ] GN I T T E S   E LU D EH C S [ ] GN I T T E S   E LU D EH C S [ ] GN I T T E S   E LU D EH C S [ LCD Monitor Schedule Operation ・・・ Daily Schedule ● Schedule Operating Function
  14. 14. Operating Data Memory Operating data memory .... Records operating data for the last 12 days in memory. LCD display example [ OP E R AT I ON  DAT A] Operating condition is recorded 1 . 1 2 /1 5   1 0 : 10 P : 0 6 8 , ***, 0 1 5,018 C: 2 1 0 T : 3 5 6 , ***, 5 2 , 4 6 , ** in memory at a scheduled time L: 80 every day. 2 . 1 2 /1 4   1 0 : 30 P : 0 6 7 , ***, 0 1 5,018 Operating data check-up can be C: 2 1 0 T : 3 4 8 , ***, 5 0 , 4 4 , ** done on the LCD display panel. L: 70 N MO  : B A C K (Note) The content of monitor 14 display may be modified.
  15. 15. Shut-down History and Data Memory Shutdown history memory ・・・ Record Shutdown history and each operating condition for quick trouble shooting.LCD display example [ S H U T D O WN   H I S T O R Y ] [ D E T A I L S -1 ] 1 . O V E R L O A D   MA I N 1 O V E R L O A D   MA I N . C ODE : 1 7 L NOS . :  1 C ODE : 1 7 L NOS . :   1 0 0 /1 2 /2 5   2 0 : 30 0 0 /1 2 /2 5   2 0 : 3 0 2 . H I G H   D I S . T E MP . C ODE : 1 8 L NOS . :  1 DI S . P R E S S : 0. 6 9 MP a 0 0 /1 0 /2 1   1 8 : 15 I NT S T G. P : *. **MP a 3 . H I G H   O I L   T E MP . OI L   P R E S S : 0. 1 5 MP a C ODE : 5 8 U NOS . :  1 CL T. P RESS: 0. 2 5 MP a 0 0 /0 9 /1 3   1 4 : 52 R MT +S E T : C L E A R  S E T : O P E N     MO  : B A C K N  C H K : N E X T     MO  : B A C K N (Note) The content of monitor 15 display may be modified.
  16. 16. AIR FLOW, OIL FLOW & COOLANT FLOW . AIR FLOW 1 1. Air Filter 2. Suction Throttle Valve 8 3. Air End 2 7 4. High Pree Cooler 5. Check Valve 6. After Cooler 1 4 OIL FLOW 9. Oil reservoar 10. Oil Pump 3 1 1 2 1 11. Oil Cooler 15 12. Oil Filter 4 Distributed to bearing & gear 5 6 COOLANT FLOW 1 13. Coolant Pump 3 1 14. Coolant Cooller 0 9 Air End Water Jacket 16
  17. 17. CAPACITY CONTROLStart & UnloadCLOSE OPEN ATM POWER CONSUMTION 40% PURGE VACUUM 0.15MPa CLOSE 17
  18. 18. CAPACITY CONTROLLoad CLOSEOPEN ATM 35 ºC OPEN ATM 0.69 Mpa 0.69 MPa 380 ºC 0.69 Mpa 40 ºC 18
  19. 19. MAINTENANCEDurable New V-Ribbed V- Direct- Direct-Coupling drivenbelt driven Configuration Configurationup to 55kW single stage Larger than 65kW two stageand 55kW two stage 19
  20. 20. OPERATION RECORDDATE MOTOR DISCHARGE AIR OIL COOLANT PRESS PRESSTIME VOLT CURRENT TEMP LOAD UNLOAD PRESS TEMP PRESS TEMP NOTE MAX MAX 0.08 – 0.13 0.12 – 0.16 MAX 0.14 –0.27 MAX H 390 ºC 0.69 MPa MPa MPa 60 ºC MPa 60 ºC
  21. 21. MAINTENANCEDurable New V-Ribbed V- Direct- Direct-Coupling drivenbelt driven Configuration Configurationup to 55kW single stage Larger than 65kW two stageand 55kW two stage 21
  22. 22. MAINTENANCE ● Improvement in working efficiency by putting coolers on the back side (Air-cooled type) ● Adoption of new V-ribbed belt and the same mechanism for belt tension with HISCREW ● Adoption of cartridge type high performance filter ● Disuse of shaft sealing backup air(getting rid of shaft sealing orifice and shaft sealing filter) ● Simple structure for installation and removal of coolant filter ● Sideways structure of inlet filter 22
  23. 23. MAINTENANCESCHEDULE ( A ), for 8000 operation hours per yearDaily Schedule : Checked operation data Check Oil Level during operation Drain Out Condensate of control line filterMonthly Schedule : Cleaned Up CoolerHalf Yearly Schedule : Replaced : Oil, Suction Filter Cleaned : Control Line filter, Cooler, Checked : Coolant Concentration, Oil Pressure, Operation of capacity control system, Leaking of Check Valve, Shaft seal coolant pump.Yearly Schedule : Replaced : Suction Filter, Oil Filter, Oil, Parts of Suction Throttle Valve, Belt if necessary, Cleaned : Oil Strainer, Coolant Strainer, Safety Valve, Cooler, Checked : Electrical, Motor Insulation, Joint, Bolt, Nut, Solenoide. 23
  24. 24. MAINTENANCESCHEDULE ( A ), for 8000 operation hours per year2 - Yearly Schedule : Take action as yearly schedule Replaced :Seal Oil Pump, Bearing oil Pump, Coolant, Shaft seal coolant pump, Pressure Cap, Check Valve, Element Control Line Filter3 - Yearly Schedule & 5 Yearly Schedule Take action as yearly schedule4 – Yearly schedule : Take action as 2-yearly maintenance Replaced : Motor Bearing6 – Yearly schedule Take action as 2 yearly schedule Replace : Air End Block, Bearing gear Case, Solenoide, Shaft seal, Coolant Strainer, Oil Strainer, Oil temperature control Valve. 24
  25. 25. MAINTENANCESCHEDULE ( B ), for 4000 operation hours per yearDaily Schedule : Checked operation data Check Oil Level during operation Drain Out Condensate of control line filterMonthly Schedule : Cleaned Up CoolerHalf Yearly Schedule : Cleaned : Control Line filter, Cooler, Suction Filter, Checked : Coolant Concentration, Oil Pressure, Operation of capacity control system, Leaking of Check Valve, Shaft seal coolant pump.Yearly Schedule : Replaced : Suction Filter, Oil Cleaned : Oil Strainer, Coolant Strainer, Safety Valve, Cooler, Checked : Electrical, Motor Insulation, Joint, Bolt, Nut, Solenoide. , Oil Filter, Oil, Parts of Suction Throttle Valve, Belt if necessary, 25
  26. 26. MAINTENANCESCHEDULE ( B ), for 4000 operation hours per year2 - Yearly Schedule & 4 yearly Schedule : Take action as yearly schedule Replaced : Coolant, Oil Filter, Valve Sheet Blow off Valve3 - Yearly Schedule, 5 Yearly Schedule & 7 Yearly Schedule Take action as yearly schedule Replaced : Parts of Suction Throttle Valve, Check Valve, Element Control Line Filter, Shaft seal Coolant Pump, Belt.6 – Yearly schedule : Take action as 3 -yearly maintenance Replaced : Motor Bearing8 – Yearly schedule Take action as 2 yearly schedule Replace : Air End Block, Bearing gear Case, Solenoide, Shaft seal, Coolant Strainer, Oil Strainer, Oil temperature control Valve. 26
  27. 27.         K C A B : N OM K C A B : N OM K C A B : N OM K C A B : N OM E RO T S :         E RO T S :         E RO T S :         E RO T S :         TES TES TES TES ** : Supplied by customer27 Unit 2 a PM 2 0 . 0 a PM 2 0 . 0 a PM 2 0 . 0 a PM 2 0 . 0 :DAO LNU :DAO LNU :DAO LNU :DAO LNU . . . . 7 7 7 7 is required. a PM 5 0 . 0 a PM 5 0 . 0 a PM 5 0 . 0 a PM 5 0 . 0 : PU K CU B : PU K CU B : PU K CU B : PU K CU B . . . . 6 6 6 6 * : Cooling water motor valve s51 s51 s51 : R E V O H C IW S : R E V O H C IW S : R E V O H C IW S . . . 5 5 5 PA L R E VO : D O H T EM   H C T IW S . 4 h0.8 h0.8 h0.8 h0.8 : EM I T   L A U D : EM I T   L A U D : EM I T   L A U D : EM I T   L A U D . . . . 3 3 3 3 EVA L S EVA L S EVA L S EVA L S :TCE LES :TCE LES :TCE LES :TCE LES . . . . 2 2 2 2 M Load/Unload LGN S : E D OM . 1 1 1 1 1 ] G N I T T E S   U- I T L UM [ ] G N I T T E S   U- I T L UM [ ] G N I T T E S   U- I T L UM [ ] G N I T T E S   U- I T L UM [ Run/Stop Select dual or follow-up mode Operating mode setting screen Source voltage DC (6) **Wires M solenoid valve Load/Unload *Air discharge Run/Stop pressure detect **Air pipe for Unit 1 No Additional Control Panels are required for Dual Operation. Dual Operation Function, Auto-stop/restart OPTION
  28. 28. OPTIONDual Operation Function, Auto-stop/restart Dual Operation 2 units operate in turn every setting time. Overlap Operation Unit 1 Master Slave Master Unit 2 Slave Master Slave *Dual time *Dual time *Overlap time *Overlap time *Adjustable Interval Operation when the power supply is limited, effective. Unit 1 Master Slave Master Unit 2 Slave Master Slave *Dual time *Dual time *Interval time *Interval time 28 *Adjustable
  29. 29. OPTIONDual Operation Function, Auto-stop/restart Back-up Operation Pressure back-up function is added to dual operation. Slave Master Slave Unit 1 Load Unload Load Master Slave Master Unit 2 Load Load Unload Load AUTO stop Pressure *Cut-out(0.69MPa) *Unload(0.67MPa) * Cut-in(0.59MPa) *Back-up(0.54MPa)Pressure control by pressure * Dual time * Dual time 29 sensor with master unit. *Adjustable
  30. 30. OPTIONDual Operation Function, Auto-stop/restart Shutdown back-up function After recovering from shutdown, Unit 1 operates again as a master within remaining time. After that Dual time unit 1 becomes a slave. Remaining time 8 sec Shutdown Unit 1 Master Unit 2 Slave Single・Slave ・ 30
  31. 31. OPTIONNew Oil Mist Remover OMR (Built-in) No gear case vent piping required with this option. 99.99% oil fume removed. Patented unique construction. OUTSIDE INSIDE Relief valve Filter regulator Oil Mist Remover(OMR) 31 Vacuum indicator Pressure gauge
  32. 32. OPTIONNew Oil Mist Remover OMR (Built-in)FEATURES No need to assemble, mount nor provide wiring1. Package built-in at site.2. Compact 50% element space compared to conventional unit.3. Easy one-tough mounting No need to modify pipes on compressor side.4. Lower Ejector air consumption 75kW models : Reduced from 110 to 60L/min.5. Lower Ejector noise Package built-in style eliminated noise leakage.6. Upright relief valve Oil receive plate is eliminated.V.S. Competitor A : HITACHI has better reliability by eliminating the condensate back flowV.S. Competitor B : HITACHI has better reliability and performance. 32
  33. 33. OPTIONNew Oil Mist Remover OMR (Built-in)FLOW SHEET Remover Element Relief Valve Air End Vacuum Indicator Air Oil Pump Gear Case Filter Pressure Solenoid Regulator Float Trap Ejector gauge Valve 33

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