ブックタイトル佐藤真空真空装置2017

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佐藤真空真空装置2017

真空乾燥装置・真空ベーキング装置Vacuum Drying Oven/Vacuum Baking EquipmentDH“Fairy”SeriesFeatures and Functions■DH-DP typeThe DH-DP type incorporates an oil-sealed rotary vacuum pump and oil diffusion pump andprovides an ultimate pressure of x10 -3 Pa. Offers an alternative to the DH-TP type, providinghigh vacuum atmospheres at lower cost.■DH-TP typeIncorporating an oil-sealed rotary vacuum pump or dry pump, and turbo-molecular pump, the DH-TP type provides an ultimate pressure of x10 -4 Pa. Of all our vacuum baking series types, itboasts the most powerful vacuum and the cleanest heating environment.■Heating mechanismHigh temperatures are achieved inside the vacuum chamber by an internal heating system inwhich sheath micro-heaters attached to the underside of each shelf board function as heatingsources. Depending on the type of workpiece, heaters can also be attached to the inside wallsurfaces of the chamber. With either system, compared to external heating systems, the internalheating system reduces the time required to heat the chamber to the specified temperature andensures superior temperature distributions within the chamber.■Heating controlPID control is performed by individual temperature controllers provided for each of theheaters installed in the chamber, ensuring accurate, reliable temperature control. Additionally,programmable controllers can be used to specify heating patterns.■OperabilityThe DH Series types are easy to use and can be operated by anyone. Simply press the Startbutton to turn the system on and activate the sequencer program for automatic functions suchas vacuum exhaust, heating, and valve opening and closing. The device system configurationand On/Off status of each of the devices are displayed on the graphic panel for easyconfirmation of operating status. Various interlock functions are provided to prevent erroneousoperations at each separate stage.■SafetyIf an equipment malfunction is detected during automatic operations, the system either haltsall operations or specific functions, depending on the type of malfunction (a drop in coolingwater amount or air pressure, overheating, and so forth), using the lamps on the graphic panelto indicate the type of malfunction. The system features a comprehensive range of safeguards.In the event of a power failure, for example, the main valve closes to maintain pressure in thevacuum heating chamber (to prevent oxidation of workpieces due to atmospheric leaks), whilethe pump leak valve opens to prevent backflow of pump oil.■Optional forced cooling function dramatically reduces processing timesSince vacuums serve as superior insulators, heat dissipation can take a very long time. Even whenthe heaters are turned off following heat treatment, it takes a long time for temperatures todrop to around 50℃,at which workpieces can be removed. The optional forced cooling functiondramatically reduces the time required for temperatures to drop, thereby significantly reducingtotal processing times.19