Tongzhou Weipu L-Series Glove Box Dedicated Chiller

Overview

The Tongzhou Weipu L-Series Glove Box Dedicated Chiller is a compact, water-cooled refrigeration system engineered specifically for integration with inert-atmosphere glove boxes used in semiconductor fabrication, battery R&D, and air-sensitive material handling. Unlike conventional air-cooled chillers, the L-Series employs external cooling water as the condensing medium—enabling zero heat rejection into the laboratory ambient and eliminating localized thermal load accumulation. Its thermodynamic architecture follows a closed-loop vapor-compression cycle with optimized heat exchanger geometry and low-noise scroll compressors, delivering stable temperature control within ±0.3 °C under dynamic load conditions. Designed to meet the stringent environmental and operational requirements of cleanroom-adjacent and Class 1000–10,000 lab spaces, the unit complies with IEC 61000-6-3 (EMC emission standards) and incorporates IP54-rated electrical enclosures for dust and splash resistance.

Key Features

• Refrigeration capacity range from 5 kW to 140 kW (at 20 °C return water temperature), scalable via modular compressor staging and dual-circuit condenser configurations
• Glove box–optimized interface design: standardized DIN 12572–compliant quick-connect fluid ports (G1/2″ BSP male), integrated pressure differential monitoring, and fail-safe flow interlock signaling
• Precision temperature regulation via PID-controlled glycol/water mixture circulation, with setpoint resolution of 0.1 °C and real-time deviation logging
• Integrated safety architecture including high/low pressure cutouts, flow loss detection, overtemperature shutdown, and refrigerant leak sensing per ISO 8573-1 Class 2 purity monitoring guidelines
• Acoustically damped enclosure achieving ≤62 dB(A) at 1 m distance—validated per ISO 3744 acoustic power measurement protocol
• Modular service access: front-panel removable panels for pump, filter, and expansion valve maintenance without disassembly of primary coolant loops

Sample Compatibility & Compliance

The L-Series chiller is compatible with all major glove box platforms—including MBRAUN, Plasmax, Jacomex, and VAC, provided they utilize standard aqueous or 30% propylene glycol coolant circuits operating between −10 °C and +35 °C supply temperatures. It supports continuous operation under ISO 14644-1 Class 5 cleanroom support utility specifications when installed with HEPA-filtered cooling water feed and non-shedding EPDM gasketing. The unit meets CE marking requirements under the Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. For regulated environments, optional audit-trail-enabled firmware supports 21 CFR Part 11–compliant electronic records when paired with validated SCADA interfaces.

Software & Data Management

Equipped with an embedded ARM Cortex-A9 controller running a real-time Linux OS, the chiller provides native Modbus TCP and BACnet/IP communication protocols for seamless integration into facility-wide building management systems (BMS). Local HMI features a 7-inch capacitive touchscreen with multi-language UI (English, German, Japanese), configurable alarm thresholds, and automatic event logging (≥10,000 entries with timestamp, severity, and cause code). Optional cloud connectivity enables remote diagnostics, predictive maintenance alerts based on compressor runtime and delta-T trends, and secure TLS 1.2–encrypted data export for internal QA documentation. All configuration changes are logged with user ID, timestamp, and pre/post values—fully traceable for GLP/GMP audits.

Applications

• Thermal stabilization of inert-atmosphere glove boxes during thin-film deposition (e.g., ALD, CVD), where substrate temperature drift must remain below ±0.5 °C over 8-hour runs
• Cooling of high-power laser sources and RF generators mounted inside glove box workspaces
• Heat removal from electrochemical test stations during Li-ion solid-state battery cycling experiments
• Support of cryogenic sample transfer stages requiring sub-ambient coolant delivery without condensation risk
• Integration with automated wafer handling tools where vibration transmission must be limited to <0.5 µm RMS per ISO 20816-1

FAQ

Can the L-Series chiller operate with deionized water only?
Yes—provided conductivity remains below 5 µS/cm and corrosion inhibitors compliant with ASTM D1384 are added; optional stainless-steel heat exchangers are available for extended DI water compatibility.
Is remote firmware update supported?
Yes—via authenticated HTTPS upload through the web-based configuration portal; updates require dual-signature validation and generate immutable version logs.
What is the minimum allowable coolant flow rate for safe operation?
1.2 L/min per kW of nominal capacity—monitored continuously via ultrasonic flow sensor with analog 4–20 mA output.
Does the unit include validation documentation for IQ/OQ protocols?
Standard delivery includes Factory Acceptance Test (FAT) report; site-specific Installation Qualification (IQ) and Operational Qualification (OQ) templates are provided upon request and may be executed with Tongzhou Weipu’s certified field engineers.
How is refrigerant charge integrity verified during commissioning?
Using integrated pressure–temperature correlation algorithms aligned with ASHRAE RP-140, cross-validated against external calibrated manifold gauges prior to first startup.