Facts worth knowing about Oil nozzles - Danfoss.com

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Can an oil nozzle be cleaned?Preferably, nozzles should always be changed rather than cleaned to ensuremaximum performance.Deposits or particles which sit firmly around the nozzle orifice cannot bescraped off without inevitable damage to the nozzle resulting in a distortedspray angle and atomizing pattern. The same thing happen if the nozzle istaken apart and attempts are made to scrape out the cone slots.With nozzles of small capacity, without the aid of a microscope, it ispractically impossible to see whether the cone slots are thoroughly clean. Inthese circumstances, the cost of replacing a nozzle is far less than a possiblefurther service entailing a nozzle change in any case. Keep nozzles in theiroriginal containers and in a nozzle box to keep them clean and to preventdamage.18
What do the numbers and letters on the nozzle mean?It is wise to become really familiar with the numbers and letters which arestamped on each nozzle so that the correct one can be chosen.New CEN definition pointTest oil: Viscosity 3,4 mm 2 /sdensity: 840 kg/m 3Atomizing pressure: 1000 kPa (× 10 -2 bar)Existing oil nozzles must be tested under the above new test conditions. This of courseproduces new data on capacity, pattern and angle.Example of new marking:CEN marking + existing markingThe nozzles will in future carry the two different markings:The new CEN marking which gives information under the CEN definition point, markedEN (European-standard).The existing marking gives: information on the existing capacity in USgal/h, sprayangle and spray pattern.The new CEN marking gives: Nozzle capacity in kg/h at an atomizing pressure of1000 kPa (× 10 -2 bar) in test oil 3.4 mm 2 /s, 840 kg/m 3 .Because the nozzles remain unchanged as regards cone and orifice insert, the new CENtest data on capacities will often give uneven figures, e.g. 2.37 kg/h.Because the CEN standard contains a stricter requirement on capacity tolerance(±4%), we cannot round off the new nominal values.Marking on standard nozzlesThe existing marking (old) givinginformation on the existingcapacity in USgal/h, spray angleand spray pattern at 700 kPa(× 10 -2 bar) in test oil 3.4 mm 2 /sand 820 kg/m 3 .19
Page 1: Facts worth knowing aboutOil nozzle
Page 5 and 6: Oil nozzles and the complete oil-bu
Page 7 and 8: What has a Danfoss oil nozzle to of
Page 9 and 10: How does a Danfoss oil nozzle work?
Page 11 and 12: But how does the combustion itself
Page 13 and 14: What effect has atomizing pressure?
Page 15 and 16: What effect has air supply on the o
Page 17 and 18: Where must the oil nozzle be locate
Page 19: How should an oil nozzle be handled
Page 23 and 24: Is it possible to compare oil nozzl
Page 25 and 26: What makes the flame lopsided?A lop
Page 27 and 28: What causes oil coke on the nozzle
Page 29 and 30: What produces a greasy malodorous d
Page 31 and 32: What causes the oil to ignite with
Page 33 and 34: What causes leakage between oil noz
Page 35 and 36: Can the nozzle cause too low a flue
Page 37 and 38: What causes oil and coke to collect
Page 39 and 40: What to do with old, worn out nozzl
Page 41: Nozzle capacitiesNozzle capacities

Facts worth knowing about Oil nozzles - Danfoss.com

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