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Equipos de descontaminación de personal y material
Caja de contención de presión negativa
A transfer chamber held below adjacent-room pressure so leakage is drawn inward and routed to filtered exhaust.
- Negative Chamber Bias
- Filtered Exhaust
- Controlled Make-Up Air
- Pressure-Gated Interlocks
Introducción del producto
The negative-pressure containment pass box moves dusty, potent or odorous material without allowing a passive leak towards the support space. A variable-speed exhaust fan maintains the selected negative pressure, while a controlled make-up path avoids excessive suction at the door seals. A pressure signal controls the interlock logic and indicates when the chamber has recovered after a transfer.
Características clave
A deliberate make-up air path limits high-velocity leakage through random gaps.
The clean-side door can remain inhibited until pressure recovers.
A sealed final-filter service panel separates captured material from the corridor.
Smooth welded internal surfaces support wipe-down after transfer.
Preocupaciones del producto del cliente
The chamber needs to keep leakage inward without making doors difficult to operate or disrupting adjacent spaces.
Exhaust force makes a door difficult to unlatch.Controlled make-up air and an adjustable setpoint limit the differential pressure.
Filter loading reduces extraction and reverses the leakage direction.Pressure-responsive fan control adjusts airflow as resistance changes.
Captured powder is exposed during routine filter service.A gasketed service housing keeps handling on the designated dirty side.
The next door opens before the chamber recovers.Pressure-gated interlocks delay release until the selected negative bias returns.
Aplicaciones típicas
Potent compound transferPowder dispensing roomsHazardous sample handlingOdour-controlled process suites
Parámetros técnicos
Typical pressure-containment construction ranges for a negative-pressure pass box are listed below.
| Materiales Core | Welded SUS 304 or SUS 316L chamber with variable-speed exhaust, make-up inlet and HEPA final filter |
|---|---|
| Panel de espesor | 80-150 mm sealed plenum and double-wall construction |
| Ancho efectivo | 500-1200 mm clear chamber width |
| Longitud máxima | Up to 1500 mm chamber depth |
| Acero frente a espesor | 1.2-1.5 mm stainless-steel facing |
| Densidad Core | 35-40 kg/m³ polyurethane insulation around pressure and filter plenums |
| Conductividad térmica | 0.022-0.028 W/(m·K) for polyurethane plenum insulation |
| Superficie acabada | Brushed or electropolished stainless chamber with smooth coved internal corners |
| Tipo conjunto | Pressure-tight welded body with gasketed interlocked doors and sealed filter-service panel |
| Customization | Disponible según la aplicación prevista y el entorno operativo. |
Opciones disponibles
Typical -10 to -50 Pa pressure rangeSafe-change exhaust filterRemote alarm contactsRoom-specific pressure setpoint
Planning a Negative-Pressure Containment Pass Box specification?
Envíenos sus dimensiones, condiciones de instalación, objetivos de rendimiento y acabado superficial requerido.
