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Hollow cone nozzles

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Lechler hollow cone nozzles produce an especially fine, atomized liquid flow, with spray patterns characterized by a ring-shaped impact area.  These nozzles are ideal for spray applications such as gas cooling, aerating, dust control, and spray drying.  All other factors being equal, hollow cone nozzles produce the smallest average droplet sizes of any purely hydraulic nozzle.  In so doing, these nozzles create sprays with a greater exposed total surface or contact area than other hydraulic model.  It is this increased contact area of the sprayed fluid upon its target that makes a hollow cone nozzle ideal for certain applications as listed above.  The smaller droplets so created tend to be quite similar in size and relatively evenly distributed throughout the area of the spray.

Lechler offers two styles of hollow cone nozzles

  • Axial
  • Tangential.


Axial hollow cone nozzles

Lechler axial hollow cone nozzles have a straight-through flow line from input to output.  They employ spiral grooves or inclined channels along that axis to produce swirl and atomization.  The result is a spray comprising extremely small droplets that are similar in shape and size.  The spiral grooves in the swirl inserts ensure an efficient whirling of the liquid.  Consequently, the total contact surface area of the atomized liquid is significantly increased, the better to achieve the purpose of the spray application, such as faster evaporation or greater liquid contact with the target. 

 

Tangential hollow cone nozzles

Lechler tangential hollow cone nozzles utilize a right angle supply of liquid to the target.  Flow movement and atomization are achieved via a swirl chamber, without the use of a swirl insert, for maximum resistance to clogging

Tangential hollow cone nozzles also create a very uniform hollow cone spray.  This is due to the right-angle flow the fluid takes inside the nozzle body.  An off-center inlet combines with the 90° turn the fluid makes to generate a whirling rotation of the liquid within the nozzle chamber, ultimately resulting in smaller droplets and a consistent distribution upon discharge.  With tangential hollow cones, spray angles up to 130° can be achieved.  Due to their insert-free interiors, tangential hollow cone nozzles are basically self-cleaning and resistant to clogging, even with rather poor water conditions.  Typical applications for tangential hollow cone nozzles include: air humidification in air conditioning systems, spray pond cooling, cooling of plastic pipes after extrusion, and gas cleaning in chemical and environmental engineering installations.

 

The Lechler family of hollow cone nozzles:

Series 212 Very Low Flow Hollow Cone Nozzles

Series 212 Very Low Flow Hollow Cone Nozzles

Description

  • Extremely fine, fog-like hollow cone spray
  • Cylindrical strainer included

Standard Materials

  • Hardened SS with Brass, 316SS

Applications

  • Disinfection
  • Humidification of air
  • Spraying of oil
  • Absorption

Standard Connections

  • 1/4" male BSPP, 1/4" male BSPT

LechlerUS-Shop:/PDF/lg.gif  Product overview / technical data: Series 212 Axial hollow cone nozzles (PDF)


Series 214/216 Hollow Cone Nozzle

Series 214/216 Hollow Cone Nozzle

Description

  • Fine atomization with uniform distribution
  • Removable swirl insert for cleaning

Standard Materials

  • 316SS, Brass

Applications

  • Gas cooling and cleaning
  • Steam de-superheating
  • Spray drying
  • Dust suppression

 Standard Connections

  • 1/8", 1/4", 3/8" male NPT

LechlerUS-Shop:/PDF/lg.gif  Product overview / technical data: Series 214/216 Axial hollow cone nozzles (PDF)


Series 2TR Axial Hollow Cone Nozzle

Series 2TR Axial Hollow Cone Nozzle

Description

  • Hollow cone nozzle with POM material
  • Ceramic insert
  • Fine, uniform spray

Standard Materials

  • POM housing, ceramic insert

Applications

  • Humidification of air
  • Cooling of gasses
  • Dust control
  • Spraying onto filters
  • Standard Connections
  • Retaining nut connection with standard nozzle base

LechlerUS-Shop:/PDF/lg.gif  Product overview / technical data: Series 2TR Axial hollow cone nozzles (PDF)


Series 302/304/306/307 Tangential Hollow Cone

Series 302/304/306/307 Tangential Hollow Cone

Description

  • Uniform hollow cone spray
  • Non-clogging nozzle without swirl insert

Standard Materials

  • Brass
  • 316LL SS

Applications

  • Cooling
  • Foam control
  • Protection of storage tanks

Standard Connections

  • 1/2", 3/4", 3/8" female NPT

LechlerUS-Shop:/PDF/lg.gif  Product overview / technical data: Series 302/304/306/307 Tangential Hollow Cone (PDF)


Series 302 Plastic Tangential Hollow Cone Nozzles

Series 302 Plastic Tangential Hollow Cone Nozzles

Description

  • Clog Resistant design 
  • Uniform spray coverage

Standard Materials

  • PVDF, Nylon, PP

Applications

  • Humidification
  • Air washing
  • Dust collectors
  • Tunnel coolers
  • Pasteurizer cooling lines

Standard Connections

  • 3/8" female NPT, 3/8" female BSPP, Lechler Twistloc connection

LechlerUS-Shop:/PDF/lg.gif   Product overview / technical data: Series 302 Plastic Tangential Hollow Cone Nozzles (PDF)


Series 373 Ramp Bottom Tangential Hollow Cone Nozzles

Series 373 Ramp Bottom Tangential Hollow Cone Nozzles

Description

  • Low pressure uniform distribution
  • Patented swirl chamber design
  • Built-in ramp for extended service life

Standard Materials

  • 316SS

Applications

  • Wet scrubbers
  • Gas cooling and conditioning
  • Dust suppression
  • Chemical reactors
  • Spray pond cooling

Standard Connections

  • 1", 1-1/4", 1-1/2", 2", 3" female NPT

LechlerUS-Shop:/PDF/lg.gif  Product overview / technical data: Series 373 Ramp Bottom Tangential Hollow Cone Nozzles (PDF)


Series 220/226 Axial Low Flow Hollow Cone Nozzle

Series 220/226 Axial Low Flow Hollow Cone Nozzle

Description

  • Extremely fine, fog-like hollow cone spray
  • Integrated strainer
  • Built-in ramp for extended service life

Standard Materials

  • 316SS

Applications

  • Disinfection
  • Sterilization
  • Cooling
  • Air humidification
  • Spraying oil
  • Absorption

Standard Connections

  • 1/4" Male NPT

LechlerUS-Shop:/PDF/lg.gif Product overview / technical data: Series 220/226 Axial Low Flow Rate Hollow Cone Nozzles (PDF)