Compressor element for a screw compressor and screw compressor in which such a compressor element is applied
A screw compressor and compressor technology, applied in the field of compressor components, can solve the problems of large synchronous changes, mutual axial displacement, limited working area of compressor components, etc., and achieve the effects of easy access and reduced mechanical loss.
Active Publication Date: 2018-03-09
ATLAS COPCO AIRPOWER NV
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Problems solved by technology
This has the disadvantage that in some extreme cases the axial bearing of the male rotor mounted on said journal may tilt, which may lead to a restriction of the working area of the compressor element
[0017] With known outlet-driven compressor elements, the synchronizing gear is located on the inlet side, in other words on the side of the rotor opposite to the main bearing, and is therefore at a relatively large distance from this main bearing, so that the synchronizing gear due to Significant mutual axial displacement of the rotors due to different length changes caused by changing temperature gradients, the disadvantage is that in the case of synchronous gears with helical teeth, synchronous changes between male and female rotors may be undesirable Big
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[0072] figure 1 The screw compressor 1 shown comprises a compressor element 2 and a drive in the form of a gear transmission 3 , only a part of which is shown for the sake of clarity.
[0073] The compressor element 2 is provided with a housing 4 having a central part 4a in which two superimposed cylindrical rotor chambers 5 are arranged, wherein the two rotors 6 and 7 are fixed with helical blades 8, the two rotors 6 and 7 are male rotor 6 and female rotor 7 respectively, the blades 8 of the two rotors 6 and 7 mesh together so that the chamber is spaced between the male rotor 6 and the female rotor 7, When the compressor element 2 is driven, the chambers move in a known manner from an inlet (not shown) on the inlet side 9 of the rotors 6 and 7 to an outlet on the outlet side 11 of the rotors 6 and 7 10, whereby the enclosed gas is compressed during said movement.
[0074] The axes XX' and YY' of the two rotors 6 and 7 are arranged practically parallel to each other and are ...
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Compressor element of a screw compressor (1) inlet side (9) and an outlet side (11) and two helical rotors (6 and 7), respectively a male rotor (6) with a drive for the male rotor (6) and a female rotor (7) that is driven by the male rotor (6) by means of synchronisation gearwheels (24 and 25) with at least one synchronisation gearwheel (24) on the male rotor (6), characterised in that the drive and synchronisation gearwheels (24) of the male rotor (6) are chosen such that, upon being driven with acceleration of the rotors (6 and 7) without gas forces, the resulting mechanical drive force thatis exerted by this drive and by this synchronisation gearwheel (24) on the male rotor (6) has an axial component (Fp and Fs) that is directed from the outlet side (11) to the inlet side (9) and thatthe movement of the male rotor (6) in the axial direction (X-X') from the outlet side (11) to the inlet side (9) is fixed by means of a single axial single-acting or double-acting bearing (16).
Description
technical field [0001] The invention relates to compressor elements for screw compressors for compressing gases. Background technique [0002] The known compressor element for screw compressors of this type comprises a housing with an inlet for gas on the inlet side and an outlet for gas on the outlet side and two Rotor chambers in which two helical rotors are mounted on bearings, the two helical rotors mesh together to compress gas when driven, the two helical rotors are male and female respectively , the male rotor has a drive gear for driving the male rotor through a gear transmission, the female rotor is driven by the male rotor by means of a synchronous gear having at least one synchronous gear on the male rotor and a At least one synchronizing gear on the female rotor, wherein the synchronizing gear is usually designed so that when driven, the male rotor rotates faster than the female rotor. [0003] By driving the compressor elements, cavities are formed between the...
Claims
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IPC IPC(8): F04C29/00F04C18/16
CPCF04C18/086F04C18/16F04C29/005F04C29/0021F04C29/0071F04C2240/30F04C2240/50
Inventor J·纳赫特加勒S·P·G·德波克D·M·L·博泰尔斯
Owner ATLAS COPCO AIRPOWER NV