---
title: "Suction Hood"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SUCTION_HOOD"
  data_integrity_hash: "7b8e8ec9f5fd738e79b363dff3e038ad"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:SUCTION_HOOD"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/suction-hood.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/suction-hood"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 m/s capture velocity at hood face, 500-5000 Pa negative pressure differential"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.3
    unit: "m"
    consequence: "Boundary layer separation at hood entrance due to excessive pressure drop (Bernoulli principle violation) causing particle re-entrainment"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Dust accumulation exceeding 2.5 kg/m² on internal surfaces"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Installation of 316L stainless steel wear plates with 45° minimum slope angles"
  - node_2:
      trigger: "Thermal cycling between 20°C and 150°C at 5 cycles/hour"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implementation of expansion bellows with 15 mm minimum stroke capacity"
bom_nodes:
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
  flange:
    type: "component"
    urn: "URN:CNFX:ME:FLANGE"
    interface_type: "physical-logic-coupled"
  baffle-plate:
    type: "component"
    urn: "URN:CNFX:ME:BAFFLE_PLATE"
    interface_type: "physical-logic-coupled"
  mounting-brackets:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKETS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 14644-1:2015 (CLEANROOMS AND ASSOCIATED CONTROLLED ENVIRONMENTS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASHRAE 110-2016 (METHOD OF TESTING PERFORMANCE OF LABORATORY FUME HOODS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 14175-2:2016 (FUME CUPBOARDS - SAFETY AND PERFORMANCE REQUIREMENTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/suction-hood.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a05a28b9dab5b7a9ee300f100348df7e55c80751618eab669bee2bf7bb2ee365"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Suction Hood

## 1. Technical Definition
A component of dust extraction systems that captures airborne particles at the source.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 m/s capture velocity at hood face, 500-5000 Pa negative pressure differential**. Failure boundary: **Capture velocity drops below 0.3 m/s at hood face or pressure differential exceeds 6000 Pa**, Mechanism: **Boundary layer separation at hood entrance due to excessive pressure drop (Bernoulli principle violation) causing particle re-entrainment**.

### 2.1 Analytical Physics Model
Governed by the **Darcy-Weisbach Pressure Drop**:

> **Primary Equation**: $\Delta P = f \cdot \frac{L}{D} \cdot \frac{\rho v^2}{2}$  
> **Engineering Impact**: Critical for sizing CIP (Clean-In-Place) pump heads.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| f | Friction Factor | Engineering Constant |
| L | Pipe Length | Engineering Constant |
| v | Velocity | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Dust accumulation exceeding 2.5 kg/m² on internal surfaces | 8 | Airflow reduction to 40% of design capacity | Installation of 316L stainless steel wear plates with 45° minimum slope angles |
| Thermal cycling between 20°C and 150°C at 5 cycles/hour | 8 | Fatigue cracking at welded joints (Miner's rule cumulative damage &gt;1.0) | Implementation of expansion bellows with 15 mm minimum stroke capacity |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Industrial Dust Collector**, **High-Pressure Blower**, **Ductwork System**  
**Downstream Applications**: Clean Manufacturing Environment, Compliant Industrial Facility, Processed Raw Materials  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are available for the suction hood?
**A**: Our suction hoods are available in galvanized steel for general use, stainless steel for corrosive environments, and polypropylene for chemical resistance applications.

### Q: How does the suction hood improve dust extraction efficiency?
**A**: The suction hood captures airborne particles directly at the source before they disperse into the work environment, significantly improving dust collection efficiency and reducing overall system load.

### Q: What components are included in the suction hood assembly?
**A**: Each suction hood includes a housing, flange for connection to ductwork, baffle plate for airflow optimization, and mounting brackets for secure installation.

## 6. Manufacturing Compliance
- ISO 14644-1:2015 (CLEANROOMS AND ASSOCIATED CONTROLLED ENVIRONMENTS)
- ANSI/ASHRAE 110-2016 (METHOD OF TESTING PERFORMANCE OF LABORATORY FUME HOODS)
- DIN EN 14175-2:2016 (FUME CUPBOARDS - SAFETY AND PERFORMANCE REQUIREMENTS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Suction Hood](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/suction-hood)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SUCTION_HOOD | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: be165e7b
