• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Screw compressor composed of a compressor element (2,2 ') with a housing (4) in which two helical rotors (6, 7) with their shafts (8, 9) are journalled by means of bearings (10) and of a gearbox ( 3) with a housing (14) which is mounted with a mounting surface (13) against a mounting surface (12) of the housing (4) of the compressor element (2,2 ') and which is coupled to transmit torque to a shaft (8,9 ) of at least one of the aforementioned rotors (6,7), the compressor element (2) being provided with an oil circuit with an inlet (34) and an outlet (35) for oil and a cooling jacket (26) with an inlet (27) and an outlet (28) for a coolant, characterized in that the said inlets (27, 34) and outlets (28, 35) for the oil and for the coolant are located in the said mounting surface (12) of the housing (4). ) of the compressor element (2), which inputs (27,34) and outputs (28, 35) connect to channels (29) for the on and a respectively for the oil and coolant that are at least partially integrated internally in the gear unit (3).
    公开号:BE1023658B1
    申请号:E2015/5396
    申请日:2015-06-26
    公开日:2017-06-08
    发明作者:Johan Nachtegaele；Bock Simon Peter G De
    申请人:Atlas Copco Airpower, N.V.；
    IPC主号:
    专利说明:

    Screw compressor and compressor element and gearbox used for this.
    The present invention relates to a screw compressor and to a compressor element and a gearbox used therein.
    Known screw compressors are composed of a compressor element that is mounted against a gearbox.
    The compressor element is provided with a housing in which two helical rotors are mounted with their axes by means of bearings which are driven by means of. oil can be lubricated, for which purpose the compressor element is provided with an oil circuit with an inlet and an outlet for the oil.
    The compressor element is also provided with a cooling jacket with an input and output for allowing a cooling liquid to circulate through the cooling jacket in order to be able to cool the compressor element.
    The gearbox is provided with a housing with an input shaft for coupling to a motor or other drive and the gearbox can be coupled to the shaft of at least one of the aforementioned rotors in a torque-transmitting manner.
    The compressor element and the gearbox are mounted against each other and for this purpose are provided with mutually connecting mounting surfaces with a seal for externally sealing the housings towards the environment.
    With the known screw compressors, the mounting surfaces are often complex in shape, which makes their sealing relatively difficult.
    The inputs and outputs for oil and coolant of the compressor element are usually connected by external lines in the form of tubes or hoses to an external supply and drain for oil and coolant.
    A disadvantage of such external pipes is that they represent an additional cost and that they can be an additional source of failure due to the cracks or breakage of the pipes due to vibrations or the like and due to an increased risk of leakage at the seals of the connecting flanges on both ends of the pipes.
    An additional disadvantage is that for connecting each connecting flange of a pipe, a connecting surface must be machined and means must be provided to enable the respective connecting flange to be attracted to the connecting surface.
    Another drawback is that the pipes can sometimes make maintenance or certain repairs more difficult since they can get in the way for example to easily reach bolts, sensors, filters and the like with standard tools.
    Another disadvantage is that the pipes take up extra space and that when installing the screw compressor in a cabinet or the like, the necessary space must be provided for this, so that the whole can be made less compact.
    Another disadvantage is that pipes can sometimes be connected incorrectly, for example to an input instead of an output, which can lead to serious damage when the screw compressor is put into service.
    The present invention has for its object to provide a solution to one or more of the aforementioned and other disadvantages.
    To this end the invention relates to a screw compressor which is composed of a compressor element with a housing in which two helical rotors are mounted with their shafts by means of bearings and of a gearbox with a housing which is mounted with a mounting surface against a mounting surface of the housing of the compressor element and which is torque-coupled to an axis of at least one of the aforementioned rotors, wherein the compressor element is provided with an oil circuit with an inlet and an outlet for oil and a cooling jacket with an inlet and an outlet for a cooling liquid, the aforementioned inputs and the oil and coolant outputs are located in the aforementioned mounting surface of the compressor element housing, which inputs and outputs connect to channels for the supply and discharge of the oil and coolant that are at least partially internal in the gearbox are integrated.
    An advantage of the invention is that by assembling the compressor element and the gearbox, the appropriate connections for the oil lubrication of the bearings of the compressor element and for the cooling of the compressor element are automatically established.
    Mistakes at these connections are therefore prevented.
    In addition, no additional pipes are required, which means that they cannot get in the way of the accessibility of certain components during repairs or maintenance.
    Due to the lack of external lines for oil lubrication and for cooling, a screw compressor according to the invention is more reliable as cracks or breaks of the lines cannot occur, there are also fewer chances of leaks because the number of seals is at least half decreased compared to the known situation where at least two seals are required for each pipe.
    Moreover, a screw compressor according to the invention can be made more compact due to the reduced number of external pipes and fewer machine steps are also required in production since no or fewer connecting surfaces have to be provided for connecting flanges of pipes.
    According to a preferred feature, said mounting surfaces are flat and extend in a plane that extends transversely to the axial direction of the rotors.
    The flatness of the mounting surfaces obviously simplifies their realization during production and also simplifies the sealing of their housings towards the environment and of the seals of the connections between the inputs and outputs for oil and for coolant of the compressor element, on the one hand, and the corresponding channels for the supply and removal of oil and coolant from the gearbox, on the other hand by the use of flat seals or O-rings.
    Preferably, the seals for sealing the respective connections between the inlet and the outlet for coolant from the housing of the compressor element, on the one hand, and the corresponding channels for the supply and discharge of coolant from the housing of the gearbox, on the other, outside the perimeter of the seal for the enclosure sealing.
    In this way it is prevented that if a leak were to occur at the location of the aforementioned seal at the inlet and / or outlet of the connections for coolant, coolant could leak to the oil in the gearbox oil sump that the could impair the lubricating properties of the oil and thereby cause premature wear and breakage of the gearbox and also the bearings of the compressor element if, as usual, the oil from the gearbox is also used to lubricate the bearings of the compressor element.
    Also preferred are the seals for sealing the respective connections between the inlet and the outlet of the housing of the compressor element, on the one hand, and the corresponding channels for the supply and removal of oil from the housing of the gearbox, on the other hand , located outside the perimeter of the seal for the enclosure sealing.
    Preferably, the oil outlet of the compressor element housing is below the level of the bearings of the rotors of this compressor element so that the oil in the bearings can flow more easily to the crankcase of the gearbox or the like and the oil therefore experiences less resistance when it is sent through the bearings.
    Optionally two or more outlets are provided for the oil of the compressor element, so that the compressor element can be mounted in different positions on the gearbox, while there is always an outlet which is below the level of the bearings and which connects to the channel of the gearbox for draining the oil.
    In case the gearbox oil is used to lubricate the compressor element, the channel for draining the oil from the compressor element is preferably directed into the oil sump of the gearbox housing, where the oil is collected and passed through. is supplied back to the compressor element by means of an oil pump via a channel for supplying oil to the compressor element.
    In this way the oil circuit of the screw compressor is fully integrated internally.
    The inlet and / or outlet for the coolant of the compressor element are preferably situated such that this inlet and / or outlet are approximately as low as the lowest point of the cooling jacket when the compressor element is mounted on the gearbox.
    From the viewpoint of standardization of tools, O-rings, and the like, the inlet and outlet for the coolant of the compressor element can have the same dimensions. In addition, input and output can be interchangeable so that the cooling liquid can be directed through the cooling jacket in one or the other direction.
    Running the coolant through the internal channels of the gearbox also helps to cool the oil in the gearbox.
    Preferably, there are no other connections for gas or liquid vertically below the inlet and / or outlet for the cooling liquid of the compressor element, so that in the event of a leak at the location of such an inlet and / or outlet no mixing can occur with the oil of the screw compressor.
    According to another feature of the invention, the mounting surfaces are provided with dowel pins and corresponding dowel holes for aligning the shaft of at least one of the rotors with which the gearbox is coupled for coupling torque with respect to the input shaft of the gearbox and / or for the alignment of the oil and coolant inputs and outputs of the compressor element housing with the corresponding oil and coolant feed and discharge channels relative to each other.
    The dowel pins and dowel holes are preferably located in a plane parallel to or coinciding with the plane through the geometric axes of the rotors of the compressor element.
    An advantage hereof is that the location of the dowel pins during production can be accurately determined and checked, for example by measuring the position of the dowel holes relative to the bores in the housing of the compressor element for the bearings of the rotors.
    The invention also relates to a compressor element suitable for use in a screw compressor according to the invention as described above, wherein the housing of the compressor element is provided with a mounting surface for mounting against a gearbox and wherein the compressor element is provided with an oil circuit with a inlet and outlet for oil and of a cooling jacket with an inlet and an outlet for a coolant, which inputs and outputs are located in the aforementioned mounting surface.
    The invention also relates to a gearbox which is suitable for use in a screw compressor according to the invention, wherein the housing of the compressor element is provided with a mounting surface for mounting a compressor element and wherein the housing is provided with channels for the on and off drainage of oil and of coolant to the compressor element, wherein these channels are at least partially integrated internally in the gearbox and open into or depart from the aforementioned mounting surface.
    With the insight to better demonstrate the characteristics of the invention, a few preferred embodiments of a screw compressor according to the invention and of a compressor element and a gearbox are used hereafter, with reference to the accompanying drawings, as an example without any limiting character. wherein: figure 1 schematically represents a screw compressor according to the invention with a compressor element and a gear box according to the invention; Figure 2 shows the screw compressor of Figure 1, but with the compressor element and the gearbox dismantled; figure 3 represents a view according to arrow F3 in figure 2; figure 4 represents a section according to the broken line IV-IV in figure 3; Figure 5 shows a two-stage screw compressor with a low pressure and a high pressure compressor element according to the invention.
    The oil-free screw compressor 1 shown in Figures 1 and 2 is composed of a compressor element 2 and gearbox 3.
    As shown in Figure 4, the compressor element 2 comprises a housing 4 with two rotor chambers 5 in which helical rotors 6 and 7, respectively a male rotor 6 and a female rotor 7, are mounted with their respective shafts 8 and 9 by means of bearings 10.
    The rotor chambers 5 are sealed by means of shaft seals 11 arranged around the shafts 8 and 9.
    The housing 4 of the compressor element 2 is provided with a mounting surface 12 with which the compressor element 2 is mounted against a corresponding mounting surface 13 of the housing 14 of the gearbox 3 by means of bolts or the like, not shown.
    In the example shown, these mounting surfaces 12 and 13 are completely flat and extend in a plane that extends transversely to the axial direction of the rotors 6 and 7.
    The housing 4 of the compressor element is provided with an inlet 15, on the one hand, via which inlet 15 the compressor element 2 during suction can draw in a gas to be compressed in the direction of the arrow I in figure 3, and an outlet 16, on the other hand, via which outlet 16 the compressed gas in the direction of arrow 0 can be pressed out.
    In the example of the figures, the compressor element 2 is a so-called inlet-driven compressor element 2, by which is meant that, viewed in the axial direction of the rotors 6 and 7, the inlet 15 is on the side of the gearbox 3, while the outlet 16 is further away of the gearbox 3 then the inlet 15.
    Mounted against the mounting surface 12 of the compressor element 2 is a bearing cover 17 in which the bearings 10 of the shaft ends 18 of the rotors 6 and 7 are arranged on the inlet side and where the male rotor 6 projects with its shaft end 18, which shaft end 18 is provided with a gear wheel 19 which is coupled in a torque-transmitting manner to a gear wheel 20 of the gearbox 3.
    The gear wheel 20 is mounted on an input shaft 21 of the gear box 3 which is mounted in it and which protrudes from the gear box 3 with a part for coupling to a motor or other drive (not shown).
    The bearing cover 17 and the shaft end 18 with the gear 19 protrude through an opening 22 in the space 23 of the housing 14 of the gear box 3.
    The aforementioned mounting surface 13 of the gearbox housing 14 is formed by the circumference of the opening 22 and thus extends around the bearing cover 17 and the shaft ends 18 mounted in it.
    Between the mounting surfaces 12 and 13 an annular seal 25 is provided which extends around the bearing cover 17 and which ensures the sealing of the housings 4 and 14 with one another.
    The female rotor 7 is driven by the male rotor 6 via a gear transmission 24 on the outlet side of the compressor element 2.
    The housing 4 of the compressor element 2 is provided with a cooling jacket 26 which extends around the rotor chambers 5 and which is provided with an input 27 and an output 28 which are both located in the mounting surface 12 of the compressor element 2 and which connect to channels for the supply and removal of a coolant that is integrated at least partially internally in the gearbox 3.
    Figures 1 to 4 only show the internal channel 29 of the gearbox 3, via which channel 29 cooling fluid can be sent through the cooling jacket 26 for cooling the compressor element during use.
    In the same way, the outlet 28 of the cooling jacket 26 can connect to an internal channel (not shown) for the discharge of the cooling fluid via the gearbox 3.
    The aforementioned input 27 and output 28 are each sealed by means of a seal 30, for example in the form of an O-ring which is arranged between the mounting surfaces 12 and 13 and which are arranged around the respective input 27 and output 28.
    These O-rings can be at least partially enclosed in a groove in either or both mounting surfaces 12 and 13.
    Preferably, as in the example shown, the inlet 27 and outlet 28 are located outside the circumference of the seal 25 for sealing the housings 4 and 14.
    The inlet 27 and / or the outlet 28 for the cooling liquid are preferably situated such that this inlet 27 and / or this outlet 28 are approximately as low as the lowest point of the cooling jacket 26 when the compressor element 2 is mounted on the gearbox 3, so that the cooling jacket 26 can be drained easily for maintenance and repairs.
    The inlet 27 and outlet 28 preferably have the same dimensions so that they can be interchanged to allow the cooling liquid to flow through the cooling jacket 26 in one or the other direction.
    The mounting surfaces 12 and 13 are provided with locating pins 32 and corresponding locating holes 33 for the alignment of the shaft 8 or 9 of the rotors 6 or 7, with which the gearbox 3 is coupled for coupling torque, with respect to the input shaft 21 of the gearbox 3 and / or for aligning the inputs and outputs 27 and 28 with the corresponding channels 29 for supplying and discharging the coolant from the gearbox 3 relative to each other.
    These dowel pins 32 and dowel holes 33 are located in a plane parallel to the plane through the geometric axes of the rotors 6 and 7 of the compressor element 2 or may also coincide with this latter plane in an alternative form.
    Furthermore, the housing of the compressor element 2 is also provided with an oil circuit with an input 34 which is situated in the mounting surface 12 of the compressor element 2 and which connects to an internal channel of the gearbox 3 for supplying oil, for example by means of an oil pump from the oil sump of the gearbox 3, and with an outlet 35 which is also situated in the mounting surface 12 and which connects to another internal channel of the gearbox 3 for draining the oil, for example back to the oil sump of the gearbox 3.
    The inlet 34 is connected via oil channels 36 to the bearings 10 for its lubrication and is located on the side of the inlet 15 of the plane passing through the geometric axes of the rotors 6 and 7.
    The outlet 35 is situated below the level of the bearings 10 so that the oil can flow back through gravity to the oil sump of the gearbox 3.
    The inlet 34 and outlet 35 are located outside the circumference of the seal 25 for the seal between the housings 4 and 14 and are also provided with a seal 31 in the form of an O-ring or the like.
    It is clear from Figure 3 that there are no other connections for gas or liquid vertically below the inlet 27 and the outlet 28 for the cooling liquid.
    It is clear that with a screw compressor according to the invention no external lines are required for the cooling and the oil lubrication of the compressor element 2.
    Figure 5 shows a screw compressor with two pressure stages, namely a low pressure stage which is realized with a compressor element 2 as described above and a high pressure stage with a compressor element 2f with substantially the same properties as the compressor element 2 but with which this compressor element is approximately a quarter of a turn rotated about a geometric axis parallel to the axes 8 and 9 of the rotors 6 and 7.
    Also in the case of the compressor element 2 ', the inputs 27 and 34 and the outputs 28 and 35 are in the mounting surface 12 of the compressor element 2, but in this case two outputs 35 and 35' are provided which are situated diametrically opposite each other and which in this case are located within the circumference of the seal 25.
    This compressor element 2 'can hereby be mounted in two possible positions, either with the output 35 at the bottom or with the output 35' at the bottom.
    The cooling jackets 26 of both compressor elements are connected to each other via an internal channel 37, so that an external line can be saved for this.
    The present invention is by no means limited to the embodiments described by way of example and shown in the figures, but a screw compressor according to the invention and a compressor element and a gearbox used therein can be realized in all shapes and sizes without departing from the scope of the invention.
    权利要求:
    Claims (21)
    [1]
    Conclusions.
    1. - Screw compressor which is composed of a compressor element (2,2 ') with a housing (4) in which two helical rotors (6,7) are mounted with their shafts (8,9) by means of bearings (10) and of a gearbox (3) with a housing (14) which is mounted with a mounting surface (13) against a mounting surface (12) of the housing (4) of the compressor element (2,2 ') and which is coupled to a shaft for coupling torque ( 8,9) of at least one of the aforementioned rotors (6,7), wherein the compressor element (2) is provided with an oil circuit with an inlet (34) and an outlet (35) for oil and a cooling jacket (26) with an inlet (27) and an outlet (28) for a coolant, characterized in that the aforementioned inputs (27,34) and outputs (28,35) for the oil and for the coolant are located in the aforementioned mounting surface (12) of the housing (4) of the compressor element (2), which inputs (27.34) and outputs (28.35) connect to channels (29) for the on-e n drainage of oil and coolant, respectively, that are integrated at least partially internally in the gearbox (3).
    [2]
    Screw compressor according to claim 1, characterized in that the aforementioned mounting surfaces (12, 13) surround the shaft ends (18) of the rotors (6, 7) on the side of the gearbox (3).
    [3]
    Screw compressor according to claim 1 or 2, characterized in that the shaft ends (18) of the rotors (6, 7) are mounted on the side of the gearbox (3) by means of bearings (10) passing through the aforementioned mounting surfaces ( 12,13) are seen in a projection on a plane perpendicular to the axial direction of the rotors.
    [4]
    Screw compressor according to one of the preceding claims, characterized in that the aforementioned mounting surfaces (12, 13) are flat and extend in a plane that extends transversely to the axial direction of the rotors (6, 7).
    [5]
    Screw compressor according to one of the preceding claims, characterized in that the housings (4,14) are sealed at the mounting surfaces (12,13) by means of a seal (25) which is located between the mounting surfaces (12,13) is arranged and which extends around the bearings of the rotors (6,7) on the side of the gearbox (3).
    [6]
    Screw compressor according to one of the preceding claims, characterized in that the respective connections between the inputs (27,34) and outputs (28,35) for oil and for coolant of the compressor element (2), on the one hand, and the corresponding channels (29) for the supply and removal of oil and coolant from the gearbox (3), on the other hand, are sealed by means of a seal (30,31) which is arranged between the aforementioned mounting surfaces (12,13) around the respective and outputs are provided.
    [7]
    Screw compressor according to claim 5 and / or 6, characterized in that one or more of the aforementioned seals (25, 30, 31) between the mounting surfaces (12, 13) are designed in the form of an O-ring that is at least partially contained in a channel-shaped groove in either or both mounting surfaces (12, 13).
    [8]
    Screw compressor according to claim 5 and / or 6, characterized in that the seals (31) for sealing the respective connections between the inlet (34) and the oil outlet (35) from the housing (4) of the compressor element (2), on the one hand, and the corresponding channels for the supply and removal of oil from the housing (14) of the gearbox (3), on the other hand, are located outside the circumference of the seal (25) for sealing the housings (4.14) among themselves.
    [9]
    Screw compressor according to claim 5 and / or 6, characterized in that the seals (30) for sealing the respective connections between the inlet (27) and the outlet (28) for coolant of the housing (4) of the compressor element (2), on the one hand, and the corresponding channels (29) for the supply and removal of coolant from the housing (14) of the gearbox (3), on the other hand, are located outside the perimeter of the seal (25) for sealing of the housings (12, 13).
    [10]
    Screw compressor according to one of the preceding claims, characterized in that the oil is used to lubricate the bearings (10) of the rotors (6, 7) of the compressor element (2) and that the oil outlet (35) of the housing (4) of the compressor element (2) is located below the level of these bearings (10).
    [11]
    Screw compressor according to claim 10, characterized in that there are at least two outlets (35.35 ') for the oil of the compressor element and that at least one of these outlets is below the level of these bearings (10).
    [12]
    Screw compressor according to claim 10 or 11, characterized in that the channel for draining oil from the compressor element (2) opens into the crankcase of the housing (14) of the gearbox (3), where the oil is collected and passed through is returned to the compressor element (2) by means of an oil pump via a channel for supplying oil from the gearbox (3).
    [13]
    Screw compressor according to one of the preceding claims, characterized in that the compressor element (2) is provided with an inlet (15) for a gas to be compressed and with an outlet (16) for compressed gas and that the inlet (34) for the oil of the compressor element (2) is located on the side of the inlet (15) of the plane passing through the geometric axes of the rotors (6, 7) of the compressor element (2).
    [14]
    Screw compressor according to one of the preceding claims, characterized in that the inlet (27) and / or the outlet (28) for the cooling liquid of the compressor element (2) is or are located in a lower part of the cooling jacket (26) . The screw compressor according to any one of the preceding claims, characterized in that there are no other gas or liquid connections (34.35) vertically below the inlet (27) and / or outlet (28) for the coolant of the compressor element (2) are located.
    [16]
    Screw compressor according to one of the preceding claims, characterized in that the inlet (27) and the outlet (28) for the cooling liquid of the compressor element (2) have the same dimensions.
    [17]
    Screw compressor according to one of the preceding claims, characterized in that the mounting surfaces (12, 13) are provided with locating pins (32) and corresponding locating holes (33) for aligning the shaft (8 or 9) of the rotors (6) or 7), to which the gearbox (3) is coupled in a torque-transmitting manner, with respect to the input shaft (21) of the gearbox (3) and / or for the alignment of the inputs and outputs (27,28,34,35) for oil and for coolant from the housing (4) of the compressor element (2) with the corresponding channels (29) for the supply and removal of oil and coolant from the gearbox (2) with respect to each other.
    [18]
    Screw compressor according to claim 17, characterized in that the dowel pins (32) and dowel holes (33) are located in a plane parallel or coincident with the plane through the geometric axes of the rotors of the compressor element (2).
    [19]
    A screw compressor according to any one of the preceding claims, characterized in that it is an oil-free screw compressor (1).
    [20]
    Screw compressor according to one of the preceding claims, characterized in that it is an inlet-driven screw compressor (1), in other words a screw compressor, the aforementioned mounting surfaces (12, 13) of which are located on the inlet side of the compressor element (2).
    [21]
    Compressor element, characterized in that it is suitable for use in a screw compressor (1) according to one of the preceding claims, wherein the housing (4) of the compressor element (2) is provided with a mounting surface (12) for mounting against a gearbox (3) and wherein the compressor element (2) is provided with an oil circuit with an input (34) and an output (35) for oil and with a cooling jacket (26) with an input (27) and an output (28) for a coolant, which inputs (27,34) and outputs (28,35) are located in the aforementioned mounting surface (12).
    [22]
    Gearbox, characterized in that it is suitable for use in a screw compressor (1) according to one of claims 1 to 21, wherein the housing (14) of the gearbox (3) is provided with a mounting surface (13) for mounting of a compressor element (2) and wherein the housing (14) is provided with channels (29) for the supply and discharge of oil and coolant to the compressor element (2), wherein these channels (29) are at least partially internal in the gearbox (3) are integrated and open into or depart from the aforementioned mounting surface (13).
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BE2015/5250A|BE1022922B1|2015-04-17|2015-04-17|Compressor element for a screw compressor and screw compressor in which such compressor element is applied|
    BE2015/5250|2015-04-17|KR1020177032653A| KR102077378B1|2015-04-17|2016-04-12|Screw compressors, compressor elements and gearboxes applied thereto|
    US15/566,135| US10724522B2|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox applied thereby|
    CN201680000906.0A| CN106715911B|2015-04-17|2016-04-12|Helical-lobe compressor and compressor element and gearbox for helical-lobe compressor|
    RU2017139848A| RU2689237C2|2015-04-17|2016-04-12|Screw compressor|
    MX2017013313A| MX2017013313A|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox applied thereby.|
    ES16729752T| ES2843526T3|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox applied in this way|
    PCT/BE2016/000017| WO2016164989A1|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox applied thereby|
    PL16729752T| PL3283770T3|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox applied thereby|
    DK16729752.2T| DK3283770T3|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox used therewith|
    JP2017554445A| JP6728228B2|2015-04-17|2016-04-12|Screw compressors and compressor elements and gearboxes utilized by screw compressors|
    BR112017022347A| BR112017022347A2|2015-04-17|2016-04-12|screw compressor and compressor element and gearbox applied there.|
    EP16729752.2A| EP3283770B1|2015-04-17|2016-04-12|Screw compressor, compressor element and gearbox applied thereby|
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