Vacuum Chamber
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Vacuum Chamber
Vacuum chamber is designed to dry by using vacuum and heat to remove bulk and absorbed water or other solvents from a product.
Application
Vacuum is oftenemployed as a process for removing bulkand absorbed water (or other solvents) from a product. Combined with heat, vacuum can be an effective method for drying. High degrees of dryness can be attained at relatively low temperatures. This allows for fast and effective drying of temperature sensitive products. Lowermoisture content can be achieved when using vacuum and heat than can beachieved with heat only(particularly with parts that are porous or have a veryhigh surface area). Additionally, drying under a vacuum can prevent oxidation of sensitive product that cannot be dried in the presence of air. Vacuum drying systems can also recover the solvent that is removed from the product, if required. Often the part to be dried is placedinto a vacuum drying chamber. However,if the part can withstand, and is designed for vacuum, the inside of the part can be evacuated and dried without the use of a vacuum chamber.
Product Description
A vacuum dryingsystemconsists of a vacuum chamber, amechanical vacuum pump with gauge and valves as well as a source for providing heat to the product to be dried. Both oil-sealed and oil-free (dry)mechanical vacuum pumps can be used. .A condensate trap (typically cooled to very low temperatures) is also used to pump and trap the liquid(s) to be removed. Base pressures of less than 0.1 Torr are often required, depending on the liquid to be removed and the temperatures. Care should be taken to protect oil-sealed pumps from the liquid and operating the pumps properly to minimize the impact of the liquid vapors being ingested into the pump (often with the use of a gas ballast and/or gas purge).
The vacuum drying process ofteninvolves multiple stepsof applying heat and vacuum. Reducing the pressure (applying vacuum) at the surface of a liquid (such as water) will allow the liquid to evaporate without elevating the temperature. The evaporation of the liquid will continue until the partis dried or until enough heat is removed (through evaporation) that the remaining liquid freezes. At this pointthe drying process continues as sublimation which is much slower compared to evaporation. In general, this is not desirable. The purpose of heat is to maximize drying while preventing freezing of the liquid.
There are several methods of applying heat to the product beingdried. Some products have temperature limitations which may impact which methods may be employed. These methods include:
•Preheating theproductusing avarietyof methods prior to placing into the vacuum chamber.
•Preheating theproductin a speciallydesigned vacuumchamber that is configured to provide convection heating as well as vacuum.
Standard Features:
* SUS304stainlesssteel+arcweldingseamlesswelding
* Fireproof PU+ glass fiber wool insulationmaterial * Multi-layerglassobservationwindow+ Autoheating function* Full-opening +double wing type door+ 10,000 times tested lock* One Φ50mm portholescable port * Coatedfinishing (colorsavailable)or SUS304* Adjustable feet andheavy-duty castors
* High quality craftsmanship, modular design and construction
* Water and electricity separation system
* Fullsystemfunctionswitchesandindicatorlights* Allwiringcolorcodedandlabeled* Systemfaultstatusindicators* Over-temperatureprotectionandalarmswitch* Balancedloadon3phasepower* Powerleakageprotection* Overheatingprotection* Overpressureprotection* Overcurrentprotection
* 7-inch color LCD touch screen* Operation mode: programmable/ singe point setting* Sensor:PT100 (electronic sensor input is optional )* Communication interface（RS232/RS485）* Network solution, IP address can be set* Built-in detection, fault alarm, reminder function* USB interface
* Alarm and show automatic message reminder
Installation Place Requirements
※ Distance from the wall to both sides more than 800mm, and to the front more than 1500mm.
※Provide independent distribution switchgear, humidification condensate drains, and external power connector device is necessary.
※ Ground level, well-ventilated, no flammable, explosive, corrosive gases and dust;
※ No strong electromagnetic radiation nearby;
※ With floor drain(less than 2 meters from the refrigeration unit);
※ Venus Floor load capacity: not less than 800kg/ m2;
※ Leave adequate space for maintenance
Model Features
Types of BVO Brand Vacuum Chambers
Test Conditions Satisfied
Vacuum Chamber
Vacuum ＜ 10 Torr
Vacuum Drying Chamber
Vacuum and heat，130Pa，50 to + 250°C
Altitude Test Chamber
High and low Temperature 70 to 150°C, with low Pressure ＜1KPa
Thermal Vacuum Chamber
Temperature and Vacuum-75 to +125°C，≤4*10-5Pa
Model
BVO Series
BVO-350
BVO-450
BVO-600
Capacity(Liters)
42
91
234
Interior dimensions
W(mm)
350
450
600
H(mm)
350
450
600
D(mm)
350
450
650
Exterior dimensions (pending)
To be determined by 2 or 3 sub-chambers
Material
Exterior
Stainless Steel Plate with brushed /coated finishing
Interior
Stainless Steel Plate
Insulation
Fire-proff PU or Glass Fiber Wool
Performance
Temp. range
Rt～+200℃
Rt～+200℃
Rt～+200℃
Temp. fluctation
±1.0℃
±1.0℃
±1.0℃
Heat up time
≤15min
≤25min
≤45min
Vacuum degree
100Pa
100Pa
100Pa
Vacuum leakage
1KPa/h
1KPa/h
1KPa/h
Temp control model
PID+SSR
PID+SSR
PID+SSR
Heating power
2KW
3KW
6KW
Net weight
150kg
220kg
360kg
Controller
Interactive LCD touch screen controller
Power source
AC380(1±10%)V,(50±0.5)Hz,3ψ 4W+E
Safety protection
Air switch, overheating & over temp ,
current & voltage protection
Standard features
View window, sample holds
Options
Vacuum pump
Power source
AC380(1±10%)V,(50±0.5)Hz,3ψ 4W+E
Operating environment
+5℃～+35℃;≤85%RH；
Note
1.Average temp change rate between highest and lowest temperature without any load and heat dissipation, Refer to IEC60068-3-5 for more details）
2.Performance is measured in the ambient temperature of + 25℃ and sensors are placed at the outlet of air conditioning unit ;
3. Customized sizes and configurations are available.
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