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Dental Autoclave

Product Overview

This commercial-grade steam sterilizer complies with EN 13060 Class B standards, engineered for dental clinics, multi-chair practices, and ambulatory surgical centers requiring validated decontamination of complex, cannulated, and porous loads. The unit utilizes a fractional pre-vacuum air-removal system combined with a rapid pulsed steam injection architecture, ensuring steam penetration into hollow instrument lumens (such as dental handpieces, endodontic files, and surgical drills) prior to the sterilization phase. Constructed with a stamp-formed seamless SUS304 stainless steel chamber and governed by a microprocessor-based PLC, the system sustains precise thermal and barometric thresholds across every validated sterilization cycle.

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Working Principle

The sterilization cycle executes across five fully monitored, automated phases:

Fractional Pre-Vacuum:

The high-capacity diaphragm vacuum pump executes 3 consecutive pulse evacuations, drawing chamber pressure down to -0.082 MPa to extract trapped air from complex instrument geometries and porous wraps.

Heating & Steam Injection:

Saturated steam generated by the built-in independent steam generator is injected into the chamber, rapidly elevating internal temperature to operational setpoints.

Sterilization Hold:

The system maintains a stable thermal threshold—selectable between 134°C (2.1 bar) for 4 to 18 minutes or 121°C (1.1 bar) for 20 to 30 minutes—ensuring microbial inactivation.

Post-Vacuum Drying:

A deep vacuum phase extracts residual moisture from instrument loads. Filtered ambient air (0.2 um medical-grade HEPA) breaks the vacuum, yielding dry sterile loads with a residual moisture level of <0.2% for wrapped instruments.

Cycle Validation:

Internal sensors log real-time pressure, temperature, and cycle duration data, transmitting records via USB flash drive or the integrated thermal strip printer.

Key Features

Fractional Pre-Vacuum Technology: Achieves complete air removal, satisfying the stringent penetration requirements for hollow Type B and Type A dental instruments per EN 13060.

Integrated TDS Water Quality Sensor: Automatically measures feed water conductivity (<15 uS/cm required); halts cycle initiation if water impurity exceeds the safety threshold, preventing mineral scale buildup and heating element burnout.

Independent Steam Generator: External high-efficiency steam generator produces dry saturated steam on demand, accelerating cycle turnaround times and reducing chamber thermal fatigue.

Traceability & Data Export: Built-in thermal printer and USB port log full cycle parameters (pressure curves, holding time, temperature) for regulatory compliance and clinic record-keeping.

Multi-Stage Safety Interlocks: Features a mechanical pressure-actuated door lock, electronic microswitch sensor, and over-temperature/over-pressure relief valves to prevent accidental chamber opening during operation.

Configuration & Components

Chamber Assembly: Seamless stamp-formed SUS304 stainless steel with an electropolished interior surface, rated for a maximum working pressure of 2.4 bar (hydrostatically tested at 3.6 bar).

Vacuum Pump: Dual-head diaphragm vacuum pump engineered for continuous commercial operation with low noise emission (<50 dB).

Hydraulic Circuit: Industrial-grade solenoid valves and high-temperature brass fittings resistant to demineralized water corrosion.

Control Interface: Industrial 7-inch color touchscreen (HMI) displaying real-time pressure/temperature curves, water tank levels, and error diagnostics.

Water Reservoirs: Independent, easily accessible top-mounted fresh water tank (4L) and wastewater tank (4L) with integrated internal filter screens and cleaning ports.

Technical Specifications

Parameter	Specification Details
Sterilization Standard	EN 13060 Class B (Compliant with ISO 17665)
Chamber Dimensions	Diameter 247 mm x Depth 450 mm (18L Model)
Overall Dimensions	Width 480 mm x Depth 600 mm x Height 410 mm
Net Weight	48 kg (18L Configuration)
Rated Voltage / Frequency	220V - 240V, 50/60 Hz (Optional 110V)
Power Consumption	1800 W (Peak during heating phase)
Operating Temperatures	121°C (1.1 bar) / 134°C (2.1 bar)
Test Cycles Supported	Bowie & Dick Test, Helix Test, Vacuum Leak Test
Water Consumption per Cycle	Approx. 0.3L to 0.5L (Demineralized water)
Data Storage Interface	USB Flash Drive Port & Integrated Thermal Printer

Applications

General Dental Practices:

Sterilization of examination mirrors, scalers, forceps, and metallic hand instruments.

Endodontics & Oral Surgery:

Processing complex root canal files, ultrasonic tips, surgical cassettes, and low/high-speed handpieces that demand lumen air removal.

Implantology:

High-temperature sterilization of surgical kits, implant drivers, and titanium prosthetic components.

Dental Teaching Labs:

Sterilization cycles adapted for student training kits and multi-user clinic environments.

Model Selection & Configuration Options

Model	Chamber Volume	External Dimensions (W x D x H)	Recommended Facility Scale
DA-16L	16 Liters	480 x 550 x 410 mm	Small clinic / Single-chair setup
DA-18L	18 Liters	480 x 600 x 410 mm	Standard multi-chair practice (2-4 chairs)
DA-22L	22 Liters	480 x 670 x 410 mm	Busy dental clinic / Small surgical center
DA-29L	29 Liters	530 x 720 x 440 mm	Large dental hospital / High-turnover department

Manufacturing & Quality Control

Chamber Hydrostatic Testing: Every pressure vessel undergoes hydro-testing at 1.5x maximum working pressure (3.6 bar) prior to final assembly to verify structural containment.

Welding Process: Fully automated robotic TIG welding is utilized for chamber seams, eliminating human inconsistency and preventing micro-fissures.

Burn-In Testing: Completed units undergo a mandatory 48-hour continuous operational burn-in test running 10 full sterilization cycles under rated load prior to packing.

Electrical Safety Inspection: Automated testing verifies grounding continuity, dielectric withstand voltage (1500V AC), and insulation resistance per IEC 61010-1 standards.

Quality Framework: Manufactured in strict accordance with ISO 13485 quality management requirements.

Customization & Integration

OEM/ODM Support:

Custom color powder-coating on side panels, bespoke user interface splash screens, and customized packaging cartons for channel partners.

Accessory Integration:

Options to bundle ultrasonic cleaners, water distillation units, and external barcode label printers configured for sterile-batch tracking.

Electrical Compliance:

Direct configuration for regional plug types and dedicated regional power grids.

Frequently Asked Questions

Q: What water purity level is required for this autoclave, and what happens if untreated tap water is used?

A: The system requires demineralized or distilled water with a conductivity of <15 uS/cm (Total Dissolved Solids <10 ppm). Using untreated tap water introduces calcium and magnesium minerals that rapidly precipitate onto heating elements and block internal valves, triggering a TDS error alarm and voiding the chamber warranty.

Q: Does this autoclave pass the standard Bowie & Dick and Helix tests required by health authorities?

A: Yes. The unit includes pre-programmed test routines specifically configured to execute the EN 867-5 Helix test (for hollow instruments) and the ISO 11140-5 Bowie & Dick test (for steam penetration in porous loads), generating compliant verification records.

Q: What is the average duration of a standard 134°C wrapped instrument cycle?

A: For an 18L chamber loaded to rated capacity, a complete 134°C universal cycle (including pre-vacuum air removal, 4-minute sterilization hold, and vacuum drying phase) takes approximately 35 to 45 minutes, depending on the total load weight and initial temperature.

Q: How is cycle data retrieved for hospital or clinic sterilization logs?

A: Data is logged digitally in real-time. Operators can export records via the built-in USB flash drive port in PDF format, or print hard copies directly using the integrated thermal strip printer located on the front control panel.

Q: What is the warranty coverage for the pressure chamber and core electronic components?

A: We provide a 3-year warranty on the stainless steel chamber assembly against structural failure or corrosion perforation, and a 2-year warranty on core electrical components (PLC controller, vacuum pump, and valves) under normal operating conditions and maintenance schedules.

Q: Can this autoclave be integrated into existing clinic water supply systems for automatic filling?

A: Yes. Standard models operate via internal manual-fill reservoirs (4L). However, selected models support an optional automatic water-feed and direct-drain plumbing kit, allowing direct connection to an external RO (Reverse Osmosis) water purification system and wastewater line.

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