**Technical Analysis and Application Guidelines for Dense Roots Blowers**
Dense Roots blower is a compact volumetric fan designed for space constrained working conditions. It achieves high space utilization through structural optimization while maintaining the performance of traditional Roots blowers. The following are its core technical characteristics and application points:
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**1、 Core features of intensive design**
|* * Comparison item * * | Traditional Roots blower | Dense Roots blower | Advantages reflected|
|------------------|---------------------|---------------------|-----------------------|
|* * Volume * * | Conventional (length x width x height=1.5 x 1 x 1.2m) | Reduced by 30-50 (1 x 0.7 x 1m) | Suitable for narrow computer rooms/mobile devices|
|* * Weight * * | Standard cast iron shell | Aluminum alloy/welded steel shell | Weight reduction of 20-40|
|* * Integration * * | Split type muffler and pipeline | Built in muffler+integrated pipeline | Installation time reduced by 60|
|* * Maintenance convenience * * | Need to disassemble the shell | Quick opening access door | Maintenance time reduced by 50%|
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**2、 Key technological breakthroughs**
**1. Compact rotor system**
-* * Three leaf asymmetric rotor * *:
-Adopting a 45 ° spiral twist angle design, it reduces pulsating noise by 15dB compared to traditional two blade design
-Gap control 0.08-0.15mm (laser alignment calibration required)
-Integrated gearbox:
-Integrating synchronous gears and bearings into a closed oil bath chamber, reducing the size by 40
**2. Space optimization structure**
```plaintext
[Traditional Layout] [Dense Layout]
Air inlet → independent muffler → fan body air inlet → built-in muffler module
Exhaust port → External pipeline → Process equipment exhaust port → Integrated flange direct connection
```
**3. Heat dissipation design**
-* * Dual channel cooling system * *:
-Main channel: rotor cavity gas circulation cooling (wind speed ≥ 8m/s)
-Auxiliary channel: shell interlayer water cooling (optional, Δ T ≤ 10 ℃)
---
**3、 Typical performance parameters**
|Model * * | Airflow (m3/min) | Pressure (kPa) | Power (kW) | Size (mm) | Weight (kg)|
|----------------|--------------|-----------|----------|----------------|----------|
| DSR-50 | 5.2 | 58.8 | 15 | 800×600×900 | 320 |
| DSR-100 | 12.5 | 78.4 | 37 | 1000×750×1100 | 580 |
| DSR-200 | 30 | 98 | 90 | 1200×900×1300 | 950 |
---
**4、 Core application scenarios**
1. * * Ship cabins**
-Designed for salt spray corrosion resistance in ballast water treatment systems (316L stainless steel rotor)
-Case: A certain cargo ship installed 2 DSR-100s, saving 2.5m2 of cabin space
2. * * Modular sewage treatment**
-Integrated into containerized MBR equipment, equipped with variable frequency control (IP55 protection)
-Operating data: Energy consumption reduced by 12% compared to traditional models
3. * * Mobile emergency equipment**
-Vehicle mounted design, with anti vibration level up to IEC 60068-2-6 standard
---
**5、 Special considerations for selection**
1. * * Heat dissipation verification**
-Calculate the heat generation per unit volume:
$$
Q=\ frac {P \ times (1- \ eta)} {V} \ quad (P=power, \ eta=efficiency, V=volume)
$$
-Dense type requires ≤ 200W/m3 (traditional models ≤ 150W/m3)
2. * * Maintenance space reservation**
-Operating distance:
-Side ≥ 500mm (changing gear oil)
-Top ≥ 300mm (lifting rotor)
3. Vibration reduction compensation**
-Compact layout requires enhanced shock absorption:
-Select high damping rubber pad (static compression 8-10mm)
-Forced soft connection of pipelines (length ≥ 10 times the pipe diameter)
---
**6、 Cost comparison with traditional models**
|* * Project * * | Traditional Models | Dense Models | Differential Analysis|
|----------------|--------------|--------------|-----------------------|
|Purchasing cost | Benchmark price |+15-25 | Premium due to precision machining|
|Installation cost | ¥ 5000-8000 | ¥ 2000-3000 | Save on lifting/piping costs|
|Life cycle cost | Benchmark | -8-12 | Energy saving+maintenance cost reduction|
---
**7、 Mainstream brand recommendations**
|Brand * * | Technical Highlights | Typical Models | Price Range (10000 yuan)|
|------------|-----------------------------|-------------|----------------|
|Modular quick release design | DSR series | 8-25|
|Magnetic levitation bearing (zero contact wear) | BST-M | 30-60|
|Titanium alloy rotor (resistant to chlorine gas corrosion) | Delta Cube | 50-120|
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**Selection suggestion * *:
1. * * Space Priority * * Scenario (such as ships, mobile devices): Dense, despite high procurement costs, significant comprehensive benefits
2. * * High frequency maintenance * * Scenario: Evaluate the practical convenience of quick release design (some models require specialized tools)
3. * * Environment * *: Confirm the adaptability of compact structure for heat dissipation/corrosion prevention
Attachment: [3D installation diagram of dense Roots blower]（ https://example.com/3d-model ）(including dimension annotation and interface description)
