Yuelian YL-2201V Series Vacuum Drying Oven

Overview

The Yuelian YL-2201V Series Vacuum Drying Oven is an engineered environmental test chamber designed for controlled low-pressure thermal processing and high-altitude simulation. It operates on the principle of vacuum-assisted drying and depressurized thermal exposure—removing ambient air to reduce boiling points of solvents and volatiles while enabling precise temperature regulation under sub-atmospheric conditions. Unlike conventional forced-air ovens, this system integrates a robust vacuum pump interface, pressure-regulated sealing architecture, and thermally stable stainless-steel workspaces to support applications requiring reproducible low-pressure environments down to ≤11.6 kPa (equivalent to ~15,000 m altitude per ISO 25745). It is widely deployed in battery safety validation, aerospace component pre-conditioning, pharmaceutical lyophilization R&D, and electronic assembly outgassing studies—where atmospheric interference must be eliminated to assess material integrity, off-gassing behavior, or thermal runaway thresholds.

Key Features

• Four standardized chamber volumes (27 L, 64 L, 125 L, and 216 L) with modular external footprints—enabling scalability from benchtop qualification to pilot-line throughput.
• 6.0 mm-thick SUS 304 stainless steel inner chamber with seamless corner welding and electropolished finish—resistant to oxidation, corrosion, and residual solvent adhesion.
• Dual-layer tempered glass observation window laminated with certified explosion-proof film—providing real-time visual monitoring without compromising vacuum integrity or operator safety.
• High-fidelity silicone compression gasket system between door and flange—validated to maintain ≤11.6 kPa vacuum over extended dwell periods (≥72 h) with minimal drift.
• Integrated three-digit programmable timer (0.1 s to 999 h) with user-selectable resolution (seconds/minutes/hours)—supporting GLP-compliant test logging when paired with external data acquisition.
• Full-caster mobility with locking swivel wheels—facilitating repositioning within ISO-classified labs or shared test facilities without structural anchoring.
• Externally accessible vacuum port (KF25 or ISO-KF40 configurable) compatible with oil-free scroll pumps and digital vacuum gauges for traceable pressure control.

Sample Compatibility & Compliance

The YL-2201V accommodates diverse sample geometries—including cylindrical battery cells (18650, 21700), PCB assemblies, polymer films, ceramic substrates, and small-scale pharmaceutical vials—within its uniform-heating workspace. Its design adheres to the mechanical and operational requirements of internationally recognized safety standards: UL 1642 (lithium battery cell evaluation), UL 2054 (battery pack construction), and UN Manual of Tests and Criteria, Part III, subsection 38.3 (transportation safety for lithium systems). While the unit itself is not CE-marked or FDA-listed, its pressure and thermal performance envelope aligns with test protocols specified in these standards—particularly Clause 5.1 (Altitude Simulation Test) of UN 38.3, which mandates exposure at ≤11.6 kPa for ≥6 h. The chamber’s stainless-steel construction and non-outgassing interior surfaces meet baseline cleanliness criteria for Class 10,000 cleanroom-adjacent use.

Software & Data Management

The YL-2201V operates as a standalone hardware platform with analog/digital hybrid controls—featuring front-panel push-button operation, LED-based vacuum indication, and independent temperature setpoint adjustment. For traceable test execution, it supports integration with third-party data loggers via 4–20 mA or 0–5 V output signals (optional retrofit). When deployed in regulated environments, users commonly pair the oven with validated PC-based acquisition software compliant with 21 CFR Part 11 requirements—including electronic signatures, audit trails, and immutable record storage. Although no proprietary software is bundled, the device’s electrical interfaces conform to IEEE 488.2 (GPIB) and Modbus RTU standards—enabling interoperability with LabVIEW, MATLAB, or MES platforms for automated test sequencing and report generation.

Applications

• Battery Safety Certification: Simulating high-altitude transport conditions per UN 38.3 to evaluate thermal stability, venting behavior, and containment integrity of Li-ion cells under sustained low-pressure exposure.
• Materials Outgassing Analysis: Pre-conditioning optical components, adhesives, and composites prior to space qualification per ECSS-Q-ST-70-02C, minimizing volatile condensable materials (CMCs) in vacuum environments.
• Pharmaceutical Process Development: Supporting early-stage lyophilization parameter scouting—particularly for heat-labile APIs where reduced pressure lowers required shelf temperature during primary drying.
• Electronics Reliability Testing: Detecting latent solder joint defects, delamination, or moisture-induced popcorning in QFN, BGA, and stacked-die packages through controlled vacuum bake cycles.
• Research-Scale Solvent Removal: Accelerating solvent exchange in nanomaterial synthesis (e.g., MOFs, perovskites) without thermal degradation, leveraging lowered vapor pressure at fixed temperature.

FAQ

What vacuum level can the YL-2201V achieve, and how is it measured?
The chamber achieves a base pressure of ≤11.6 kPa (−0.116 MPa gauge), verified using a calibrated Pirani or capacitance manometer. Actual performance depends on pump selection, seal condition, and load outgassing rate.
Is the temperature range adjustable, and what is the maximum operating temperature?
Standard configuration supports ambient to 200 °C; higher-range variants (up to 250 °C) are available upon request with upgraded insulation and heating element specification.
Does the unit include vacuum pump and pressure controller?
No—the YL-2201V is supplied as a vacuum chamber only. Users must specify compatible vacuum pumping systems (e.g., dry scroll, diaphragm, or two-stage rotary vane) and optional PID-based pressure controllers for dynamic setpoint regulation.
Can the oven be used for inert gas purging in addition to vacuum operation?
Yes—via optional inlet/outlet ports, the chamber supports nitrogen or argon backfilling after vacuum cycling, enabling controlled atmosphere drying or passivation protocols.
What documentation is provided for IQ/OQ validation?
Factory calibration certificates for temperature uniformity (±2 °C across workspace) and vacuum sensor linearity are included. Full GMP-compliant IQ/OQ protocol templates and witness test reports are available as a value-added service.