• 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:
    The present invention relates to a silencer to damp the noise generated by a compressor or vacuum pump, said silencer (18) comprising a lid (19), characterized in that said silencer (18) comprises a recess structure (20) on the lid (19) ) having a height H and a length L, wherein said recess structure (20) comprises a relatively straight surface over a distance x and a relatively curved surface over a distance Lx to divert a cooling gas away from the muffler (18) and only one drive module (15).
    公开号:BE1025612B1
    申请号:E2017/5395
    申请日:2017-06-01
    公开日:2019-04-25
    发明作者:Sante Alberto Di；William Maria Dominic JACOBS；Koen STOOP；Mieghem Luc Van；Tom André POTTERS
    申请人:Atlas Copco Airpower Naamloze Vennootschap；
    IPC主号:
    专利说明:

    Silencer for compressor or vacuum pump.
    This invention relates to a compressor or vacuum pump wherein it comprises: a casing with a cooling gas inlet and a cooling gas outlet for allowing a cooling gas to flow through; a fan mounted on the cooling gas inlet, which comprises a fan housing and is designed such that the cooling gas is blown into the housing; a compression or vacuum chamber comprising a first housing, a process gas inlet, and a process gas outlet to cause a process gas to flow therethrough and at least one rotating element; a drive module comprising a second housing and at least one bearing to support the at least one rotating element; a silencer that includes a cover and is designed so that the noise generated by the compressor or vacuum pump is damped.
    Keeping the temperature of various components of a compressor or vacuum pump under control is a challenge that designers face.
    While some existing designs suck the air from inside the enclosure of a compressor or vacuum pump and blow it into the surrounding environment, others use the convection capacities of various cover materials used in the production of the components.
    B E2017 / 5395
    An example can be found in US 2009/0 194 177 A1, in the name of Hitachi Koki Co., in which a layout for an air compressor is disclosed that uses two fans to create two air flows and to cool different zones of the compressor.
    Since the design uses two fans, the enclosure is provided with three different zones to allow air to flow into the enclosure and three other zones to allow air to flow from this enclosure and into the outside environment.
    Providing three inlets and three outlets also makes the production of the enclosure more complex, as additional notches and finishing steps will be required. In some cases, such inlets and outlets generate weak structural points for the enclosure. As a result, additional reinforcements must be added, thereby increasing production time and, implicitly, production costs.
    Another drawback of such a design is the complexity of the layout, since each of the two fans will have to be connected to a drive unit.
    Another example can be found in US 4,283,167 A, in the name of Varian Associates, in which a vacuum pump is disclosed which comprises a fan that draws air from the outside environment and sends it to the pump housing. The casing further comprises vertical and horizontal
    B E2017 / 5395 extendable fins along the surface of the casing, for cooling purposes.
    Tests have shown that, during the operation of a vacuum pump, different temperature zones arise between the components, and that adjacent components will influence each other's temperature. One of the disadvantages of the above-mentioned vacuum pump is the fact that such areas are not determined or treated differently in terms of cooling. This makes the cooling process inefficient.
    In addition, due to the influence of various adjacent components, materials with a high thermal resistance must be chosen for elements that would not necessarily require that, which increases the production cost of the unit. On the other hand, if such materials were not used, the high temperatures in the vacuum process would cause premature wear of the components.
    Taking into account the disadvantages mentioned above, it is an object of the present invention to provide a compressor or vacuum pump that would efficiently maintain a desired temperature of the components.
    Another object of the present invention is to provide a compressor or vacuum pump with a smaller footprint than the existing devices and with a simpler layout.
    B E2017 / 5395
    A further object of the present invention is to increase the service life of the components used, and also to reduce the risk that different adjacent components influence each other's temperature.
    Another object of the present invention is to provide an easily assembled and dismantled compressor or vacuum pump. This means that the production time and the maintenance period can be shortened.
    The present invention solves at least one of the aforementioned and / or other problems by providing a compressor or vacuum pump, said device comprising
    - a casing with a cooling gas inlet and a cooling gas outlet to allow a cooling gas to flow through;
    - a fan mounted on the cooling gas inlet, wherein it comprises a fan housing and is designed such that the cooling gas is blown into the housing;
    - a compression or vacuum chamber comprising a first housing, a process gas inlet and a process gas outlet for allowing a process gas to flow through and at least one rotating element;
    B E2017 / 5395
    - a drive module comprising a second housing and at least one bearing for supporting the at least one rotating element;
    - a silencer that comprises a cover and is designed in such a way that the noise generated by the compressor or vacuum pump is damped;
    said muffler comprising a recess structure on the cover designed to divert the cooling gas flow from the fan to the drive module.
    Since the silencer comprises a recess structure on the cover, the cooling gas flow coming from the fan can be diverted to the drive module, thereby preventing the components of the drive module from reaching high temperatures.
    Since the casing comprises only a cooling gas inlet and a cooling gas outlet to allow a flow of cooling gas to flow through, the compressor or vacuum pump according to the present invention achieves efficient cooling of the various components by using only the components needed to complete the compression or vacuum process to realise.
    The compressor or vacuum pump according to the present invention uses its components, including the casing, to direct the cooling gas flow to where cooling is required. Consequently, the temperature of all of these components increases
    B E2017 / 5395 efficiently kept below a desired threshold value.
    Since the cooling is done in this way, the footprint of the compressor or vacuum pump can be considerably reduced by positioning the components in such a way that the space between adjacent components is small enough to form channels to concentrate the cooling gas flow in places where it is known that high temperatures occur.
    As a result, the order in which various components of the compressor or vacuum pump are cooled in the design can also be determined. Consequently, for greater efficiency, the cooling gas flow can be controlled so that it first reaches the components that are known to reach lower temperatures than others, and only before it is sent outside the enclosure, to the components known to be they reach high temperatures. Taking this into account improves the efficiency of the cooling process.
    Preferably, the drive module is positioned between the fan and the compression or vacuum chamber.
    Tests have shown that, through the compression or vacuum process, the process gas within the compression or vacuum chamber, and therefore the constituent elements of said compression or vacuum chamber, reach a much higher temperature than that of the drive module.
    B E2017 / 5395
    If the cooling gas flow from the fan were not sent to the drive module, the temperature of the compression or vacuum chamber would have a significant impact on the temperature of the component elements within the drive module, resulting in a shorter service life for those component elements to have.
    This classification makes the cooling process of the compressor or vacuum pump much more efficient.
    The present invention is further directed to a method of cooling a compressor or a vacuum pump, the method comprising the following steps:
    - blowing a volume of cooling gas through a cooling gas inlet of a casing of said compressor or vacuum pump;
    diverting that volume of cooling gas to a surface of a second housing of a drive module comprising at least one bearing;
    - directing the cooling gas flow to a first surface of a first housing of a compression or vacuum chamber which comprises at least one rotating element;
    - a silencer provided to damp the noise generated by the compressor or vacuum pump, said silencer comprising a cover;
    wherein the step of diverting the volume of cooling gas entering through the cooling gas inlet to a surface of the second housing of the drive module further
    B E2017 / 5395 comprises a step of controlling said volume of cooling gas through a recess structure on the muffler cover.
    Since the method according to the present invention follows such steps, the cooling process is much more efficient than for the known compressors or vacuum pumps, since the cooling gas flow first reaches the components that are known to reach a lower temperature during operation and only thereafter those components that are known 10 that they reach a higher temperature.
    As a result, the different components are treated differently in terms of cooling and, as a result, the standard materials can be chosen for such components, even if the compressor or vacuum pump is designed
    15 to achieve higher compression or lower vacuum limits toreach known is that she higher temperaturesto generate. There the steps of distraction and lead from thecooling gas flow executed with help from 20 different components , becomes the footprint of the
    compressor or vacuum pump considerably reduced.
    The present invention is further directed to a use of a silencer for cooling a drive module of a compressor or vacuum pump, said silencer comprising a recess on the surface of the cover to divert a flow of cooling gas to the aforementioned
    B E2017 / 5395 drive module, wherein said drive module comprises at least one bearing.
    The present invention is further directed to a silencer to dampen the noise generated by a compressor or vacuum pump, the silencer comprising a cover, the silencer comprising a recess structure on the cover having a height H and a length L, said recess structure having a relatively straight surface includes a distance x and a relatively curved surface a distance L ~ x to divert a cooling gas away from the muffler and to a drive module.
    With the insight to better demonstrate the features of the invention, some preferred configurations according to the present invention are described below as an example without any limiting character with reference to the accompanying drawings, in which:
    Figure 1 schematically represents a compressor or vacuum pump according to an embodiment of the present invention;
    Figure 2 schematically shows an internal layout of a compressor or vacuum pump according to an embodiment of the present invention;
    Figure 3 schematically shows a layout of a fan according to an embodiment of the present invention;
    B E2017 / 5395
    Figure 4 schematically represents a view of the fan of Figure 3, rotated 180 ° about the axis ΆΆ ';
    Figure 5 schematically shows a cut-away view of a layout of a silencer according to an embodiment of the present invention;
    Figure 6 schematically shows the internal components of the vacuum chamber and drive module according to an embodiment of the present invention;
    Figure 7 schematically represents a drive module according to an embodiment of the present invention;
    Figure 8 schematically depicts a compression or vacuum chamber according to an embodiment of the present invention; and
    Figure 9 schematically represents the recess structure over a part of the cut along line XIX - XIX in Figure 5.
    Figure 1 shows a compressor or vacuum pump 1 that comprises a casing 2, said casing 2 further comprising a cooling gas inlet 3 and a cooling gas outlet 4 to allow a volume of cooling gas to flow through.
    The cooling gas is generally air, but it must be assumed that the present invention is not limited to air as a cooling gas, and that it can also work with other types of gas.
    B E2017 / 5395
    As illustrated in Figure 2, the compressor or vacuum pump 1 further comprises a compression or vacuum chamber 5 bounded by a first housing 6, a process gas inlet 7 and a process gas outlet 8 for flowing a process gas through and at least one rotating element 9 (Figure 6).
    The process gas inlet 7 can be connected to an external module 10 (Figure 1), which can be either a source of a gas in the case of a compressor or a receiver of a gas in the case of a vacuum pump. The process gas outlet 8 can further be connected to a user network 11, in which the compressed gas is provided or in which a vacuum is created.
    In the context of the present invention, it is to be assumed that a compressor or vacuum pump 1 is a single screw compressor, a multiple screw compressor, a scroll compressor, a single claw pump, a multiple claw pump, a single screw vacuum pump, a multiple screw vacuum pump, a volute vacuum pump, a vane vacuum pump , etc. Each of the above-mentioned types of compressor or vacuum pump can be equipped with oil injection or oil-free.
    Furthermore, it must be assumed that the at least one rotating element 9 is the at least one screw, scroll or claw element of the above-mentioned compressors or
    B E2017 / 5395 vacuum pumps 1, which generates vacuum or compressed gas by rotation.
    The compressor or vacuum pump 1 of the present invention further comprises a fan 12 mounted to the cooling gas inlet 3, wherein the fan comprises a rotor (not shown) and a fan housing 13 and is designed to blow cooling gas into the housing 2.
    Preferably, but not limited to, the fan housing is in the form of a volute on the side facing the casing (Figure wherein the volute comprises a channel 14 around the cooling gas driven by the rotor to the inside of the casing 2 to send.
    On the other side of the volute, the fan housing 13 comprises at least one opening to allow cooling gas to flow in, which is then moved by the movement of the rotor to the inside of the housing.
    Preferably, the fan housing 13 further comprises openings on the sides to allow a larger volume of cooling gas to reach the rotor.
    The compressor or vacuum pump 1 further comprises a drive module 15 (Figure 2 and Figure 7) which comprises a second housing 16 and at least one bearing 17 (Figure 6) for supporting the at least one rotating element 9.
    B E2017 / 5395
    Furthermore, the compressor or vacuum pump 1 according to the present invention comprises a silencer 18 which comprises a cover 19 and is designed so that it dampens the noise generated by the compressor or vacuum pump 1 (Figure 5).
    The sound damper 18 preferably comprises a recess structure 20 on the cover 19, which is designed in such a way that the cooling gas flow from the fan 12 is diverted to the drive module 15.
    In a preferred embodiment of the present invention, and as illustrated in Figure 9, the recess structure 20 has a height H and a length L and is preferably designed to hold the flow of cooling gas from the fan 12 on its trajectory over a distance x, within the aforementioned recess structure 20.
    Over the distance L-x, the recess structure 20 preferably comprises a slope or a curved surface to divert the flow of cooling gas away from the muffler 18 and to the drive module 15.
    In one embodiment according to the present invention, the recess structure 20 may comprise a slope over the entire distance L, in which case x would be zero.
    In another embodiment according to the present invention, said recess structure 20 may comprise two or more channels with a height H and a length L, as mentioned above.
    B E2017 / 5395
    In yet another embodiment of the present invention, the recess structure 20 may be in the form of a triangle with rounded edges, the base of said triangle being on the side facing the channel 14 of the fan 12 and the top of the triangle is in the vicinity of the drive module 15. Said triangle can form a continuous slope over the distance L, in which case x would be zero, or said slope could start after a distance x (in which x has a value other than zero) from the edge of the cover 19 of the silencer 18.
    With the aid of the recess structure 20, the compressor or vacuum pump 1 uses its components to control the direction of the cooling gas flow from the fan 12 and also allows control over the surface of the components with which such cooling gas flow comes into contact . This allows a more controlled cooling process to be designed with more efficient and predictable results.
    Preferably, the drive module 15 further comprises an oil bath within the second housing 16 for cooling and / or lubricating the at least one bearing 17, the oil bath not being shown in the drawings.
    For sealing purposes, a gasket 21 is provided within the second housing 16 (Figure 6), this gasket 21 preferably being positioned on the side that
    B E2017 / 5395 is directed to the compression or vacuum chamber 5 to prevent oil from leaking from the drive module 15.
    Typically, the second housing 16 may be made of metal, such as, for example, and not limited to: iron, stainless steel, aluminum, aluminum alloy or any other metal or alloy thereof.
    In the context of the present invention, it must be assumed that the at least one rotating element 9 comprises a rotor body contained in the compression or vacuum chamber 5 and a rotor shaft contained in the drive module 15 and around which the bearing 17 and the gasket 21 are provided . Preferably, the at least one rotating element 9 further comprises a gas seal 22 before it leaves the first housing 6 of the compression or vacuum chamber 5.
    The first and second housing 6 and 16 are hereby sealed off from each other, with the exception of the rotor shaft of the at least one rotating element 9 which enters the second housing 16 of the drive module 15.
    Typically, for efficiency purposes, both the gasket 21 and the gas seal 22 may be made of materials such as different types of polymers or rubbers (synthetic or natural) and such materials are known to have a relatively low melting point compared to the other constituent elements such as the at least one bearing 17 or the second housing 16.
    As a result, the temperature of the drive module 15 must be kept below a certain threshold value which becomes
    B E2017 / 5395 determined on the basis of the material used for the gasket 21. In addition, the temperature of the oil within the oil bath must also be kept below a certain threshold value in order not to change the properties of the oil.
    By diverting the cooling gas flow from the fan 12 to the drive module 15 with the aid of the recess structure 20, the temperature of the components is kept below the threshold values, whereby the service life of the gasket 21 and of the oil within the oil bath is extended. The periodic maintenance of the compressor or vacuum pump 1 can hereby be carried out after a longer period, whereby the compressor or vacuum pump 1 according to the present invention becomes less expensive and more reliable.
    In the context of the present invention, it is to be assumed that if the compressor or vacuum pump 1 is a double-screw or double-stepped or double-jaw compressor or vacuum pump 1, the drive module 15 comprises two bearings 17, each of which is used to rotate one element 9 and each has at least one gasket 21 and each is provided around one rotor shaft.
    In a preferred embodiment according to the present invention, the compressor or vacuum pump 1 further comprises a channel structure 23 between the first housing 6 of the compression or vacuum chamber 5 and the second housing 16 of the drive module 15, to allow cooling gas to flow between
    The first and the second housing 6 and 16 (Figure 7 and Figure 8).
    The channel structure 23 is preferably formed in such a way that the cooling gas flow is prevented from entering the first housing 6 of the compression or vacuum chamber 5, or the second housing 16 of the drive module 15. A cooling gas layer is hereby maintained between the first and the second housing 6 and 16 during the operation of the compressor or vacuum pump 1.
    By way of example, and as illustrated in Figure 7, said channel structure 23 may be in the form of a groove created near the outer wall of the second housing 16 of the drive module 15, on the side facing the first housing 6, near both side walls. Consequently, when the second housing 16 of the drive module 15 and the first housing 6 of the compression or vacuum chamber 5 are mounted within the compressor or vacuum pump 1, a channel structure 23 is formed between the first and second housing 6 and 16, so that cooling gas can flow between the first and second housing 6 and 16 after it has been diverted through the recess structure 20, and furthermore can reach the casing 2 on the side opposite where the silencer 18 is mounted.
    In another embodiment according to the present invention, if the compressor or vacuum pump 1 comprises two bearings 17, the channel structure 23 can also be formed
    Between the two bearings 17, or the channel structure 23 may comprise the groove made close to the side walls on the side facing the first housing 6 and the channel structure 23 formed between the two bearings 17.
    Said cooling channel structure 23 may have a simpler structure such as approximately parallel to the outer wall of the second housing 16, and / or approximately straight with regard to the channel between the two bearings 17, or it may have a more complex irregular or winding shape.
    In another embodiment of the present invention, the channel structure 23 and / or the groove-like structure may further comprise fins. The fins increase the efficiency of the cooling process since they work as a radiator.
    In yet another embodiment of the present invention, the first and second housing 6 and 16 may be made as a single housing and the cooling channel structure 23 may be molded.
    Tests have shown that the temperature of the process gas in the compression or vacuum chamber 5 reaches a much higher temperature than the bearings 17 and the oil within the drive module 15. As a result, the cooling gas layer formed becomes very important, since it increases the risk of a temperature influence between the first and second housing 6 and 16 limited by conduction. At the same time, the cooling gas flow realizes efficient cooling for both the first housing 6 of the compression or
    B E2017 / 5395 vacuum chamber 5 as the second housing 16 of the drive module 15.
    In a preferred embodiment of the present invention, the drive module 15 is positioned between the fan 12 and the compression or vacuum chamber 5.
    By a such classification On to take, can it maintenance of the compressor or vacuum pump 1 very easy be implemented. If we do it take example of ΘΘΠ vacuum pump is 1 it known that periodic cleaning of it at least a rotating e element 9 is required. Through the drive module 15 between the fan 12 and the vacuum chamber 5 to
    position, a user of a vacuum pump according to the present invention should only open the casing 2 of the vacuum pump 1 and the first housing 6 of the vacuum chamber 5, remove the at least one rotating element 9, clean it and continue to use the vacuum pump in its application.
    This allows maintenance to be carried out by the user, which results in much lower maintenance costs and much shorter time intervals in which the vacuum pump is not used.
    For easy production and because of the compactness, the fan 12 and the at least one bearing 1'7 are preferably mounted on a common shaft.
    B E2017 / 5395
    It is to be assumed that the present invention is not limited to the arrangement described above and that the fan 12 and the at least one bearing 17 may also be mounted on different shafts.
    Preferably the compressor or vacuum pump 1 also comprises a motor 24 which is positioned outside the housing 2 and which drives the at least one rotating element 9.
    The compressor or vacuum pump 1 can further comprise a thermal screen (not shown) provided between the motor 24 and the fan 12. The thermal screen can be selected from a group of: a metal plate, a radiator, an insulating material, a fan mounted within the enclosure of the motor and leading a stream of cooling gas away from the compressor or vacuum pump
    1, or the motor 24 may be placed on such a thermal influence between the two of the compressor or vacuum pump 1
    In another embodiment, minimum distance that may be eliminated.
    according to the present invention, the fan 12 is positioned within the housing and may further comprise a zone of a perforated material, so that the fan can extract cooling gas from outside the housing without having a temperature influence generated by the motor
    24. Such a zone can be formed on at least one side of the housing 2, or on two sides of the housing 2, preferably that zone can be formed on three sides of the housing, even more preferably,
    B E2017 / 5395 that zone is formed on the casing 2 along the periphery of the fan 12.
    In yet another embodiment, the fan 12 may comprise at least one opening 26 for allowing a volume of cooling gas to reach the rotor. Preferably, but not limited to, for greater cooling efficiency, the fan 12 includes a plurality of openings 26 throughout its circumference and / or through its center.
    Preferably, the motor 24 drives the shaft that rotates the fan 12 and also rotates the at least one rotating element 9 by connecting the shaft to at least one bearing 17 within the second housing 16 of the drive module 15.
    If the compressor or vacuum pump 1 has two rotating elements 9, a gear ring 27 (Figure 6) can be used to synchronize the movement of the rotating element 9 driven by the motor with the movement of the other rotating element 9.
    In another embodiment according to the present invention, the motor 24 can individually drive the shaft on which the fan 12 is mounted from the shaft that drives the at least one rotating element 9.
    In yet another embodiment according to the present invention, the fan 12 can be driven by a different motor (not shown) than the at least one rotating element 9.
    B E2017 / 5395
    The fan 12 can be mounted such that the volute of the fan housing 13 is in direct contact
    stands with and overlaps with the second housing 16 of the drive module 15, or the fan 12 can be perpendicular are positioned on the second housing 16 of the drive module 15. For one more more efficient cooling can be the compressor or vacuum pump 1 furtherradiator 25 That positioned Is on the first housing 6 of the
    compression ™ or vacuum chamber 5.
    Because the compressor or vacuum pump 1 has such a layout, efficient cooling of all components takes place and the risks of distortion that can occur because zones reach high temperatures are minimized or even eliminated.
    In a preferred embodiment of the present invention, the muffler 18 is positioned under the compression or vacuum chamber 5.
    As a result, the compressor or vacuum pump 1 according to the present invention is very compact compared to the existing compressors or vacuum pumps.
    Preferably, the silencer 18 is positioned below the compression or vacuum chamber 5, such that the first housing 6 of the compression or vacuum chamber 5 starts after the length L of the recess structure 20. Even more preferably, the silencer 18 is positioned such that
    The cooling gas flowing through the recess structure 20 is passed between the first housing 6 of the compression or vacuum chamber 5 and the second housing 16 of the drive module 15.
    The first housing 6 of the compression or vacuum chamber 5 can be placed directly on the cover 19 of the muffler 18. As a result, the cooling gas flow from the fan 12 is led within the recess structure 20 along the length L, and further through the channel structure 10 between the first and the second housing 6 and 16. Consequently, the cooling gas coming from the fan 12 cannot flow within the entire enclosure 2 and its trajectory is controlled by the layout of the compressor or vacuum pump 1.
    After the cooling gas stream has flowed through the channel structure between the first and the second housing 6 and 16, it reaches the housing 2, which preferably further comprises means for diverting the cooling gas stream along a first surface of the first housing 6 of the compression - or vacuum chamber 5, comprises means for further transmitting the cooling gas stream along a second surface of the first housing 6 of the compression or vacuum chamber 5, in the direction of the muffler 18, and further comprising means for directing the cooling gas stream outside the housing 2 to send.
    Preferably, the means for diverting the cooling gas stream can be in the form of
    B E2017 / 5395 specific bends of the casing 2, or additional components attached to the casing 2, or various components of the compressor or vacuum pump 1 positioned so that the cooling gas flow changes direction.
    Consequently, the cooling gas stream will flow along three fronts of the compression or vacuum chamber 5 before it is sent to the outside environment. As a result, the compression or vacuum chamber 5, where the highest temperatures occur, is efficiently cooled during the complete operation of the compressor or vacuum pump 1.
    Preferably, but not limited to, the compressor or vacuum pump 1 is a claw compressor or vacuum pump.
    The present invention is further directed to a method for cooling a compressor or a vacuum pump 1, wherein a volume of cooling gas from the outside environment is blown through a cooling gas inlet 3 of a casing 2 of a compressor or vacuum pump 1. That volume of cooling gas is diverted to a surface of a second housing 16 of a drive module 15, to cool that casing. That drive module 15 comprises at least one bearing 17.
    The flow of cooling gas is then led to a first surface of a first housing 6 of a compression or vacuum chamber 5 which comprises at least one rotating element 9, which is also cooled.
    B E2017 / 5395
    The method according to the present invention further comprises the step of providing a silencer 18 to damp the noise and possibly also vibrations generated by the compressor or vacuum pump 1, the silencer 18 comprising a cover 19.
    Preferably, the volume of cooling gas is diverted to the surface of the second housing 16 of the drive module by sending the volume of cooling gas through a recess structure 20 on the cover 19 of the muffler 18.
    For complete cooling of the compressor or vacuum pump 1, the method further comprises the step of directing the flow of cooling gas from the first surface along a second surface of the first housing 6 of the compression or vacuum chamber 5 and further through a cooling gas outlet 4 of the housing 2.
    Preferably, the method according to the present invention further comprises the step of directing the derived stream of cooling gas along the height of the drive module 15, by providing a channel between the first housing 6 of the compression or vacuum chamber 5 and the second housing of the drive module 15.
    The present invention is further directed to a use of a silencer 18 for cooling a drive module 15 of a compressor or vacuum pump 1, wherein said silencer 18 comprises a recess structure 20 on the surface of the cover 19 to discharge a flow of cooling gas
    B E2017 / 5395 lead to the aforementioned drive module 15, wherein the drive module comprises at least one bearing 17.
    The present invention is further directed to a sound damper to dampen the noise generated by a compressor or vacuum pump, wherein the sound damper 18 comprises a cover 19, characterized in that said sound damper 18 comprises a recess structure 20 on the cover 19 with a height 1-1 and a length L, wherein the recess structure 20 comprises a relatively straight surface over a distance x and a relatively curved surface over
    a distance L-x to one cooling gas to lead away from the muffler 18 and to a drive module 15. The current invention is no way limited until the as example described and in the figures displayed
    embodiments, but such a compressor or vacuum pump 1 and / or silencer 18 can be realized in all kinds of variants without going beyond the scope of the invention.
    权利要求:
    Claims (11)
    [1]
    Conclusions.
    A silencer for dampening the noise generated by a compressor or vacuum pump, said silencer (18) comprising a cover (19), characterized in that said silencer (18) comprises a recess structure (20) on the cover (19) with a height H and a length L, wherein said recess structure (20) comprises a relatively straight surface over a distance x and a relatively curved surface over a distance Lx to divert a cooling gas away from the muffler (18) and to a drive module ( 15).
    [2]
    Sound muffler according to claim
    1, wherein the muffler forms part of a compressor or vacuum pump, the compressor or vacuum pump further comprising:
    a.a casing (2) with and a
    b.
    a cooling gas outlet (4) to one cooling gas to let flow through; a fan (12) mounted On the cooling gas inlet (3), at which this one a fan housing (13) and such is designed to cool it s in the housing (2)
    is blown;
    B E2017 / 5395
    c. a compression or vacuum chamber (5) comprising a first housing (6), a process gas inlet (7) and a process gas outlet (8) for allowing a process gas to flow through and comprising at least one rotating element (9);
    d. a drive module (15) comprising a second housing (16) and at least one bearing (17) for supporting the at least one rotating element (9).
    [3]
    The silencer of claim 2, wherein the housing (2) further comprises means for diverting the cooling gas flow along a first surface of the first housing (6) of the compression or vacuum chamber (5), means for further passing the cooling gas flow to steer along a second surface of the first housing (6) of the compression or vacuum chamber (5), in the direction of the muffler (18), and further comprising means for controlling the cooling gas flow outside the housing (2).
    [4]
    The silencer according to claims 1 to 3, wherein the recess structure (20) comprises a slope over the entire distance L where the distance x is zero.
    [5]
    The silencer according to claims 1 to 4, wherein the recess structure (20) comprises two or more channels with a height H and a length L.
    B E2017 / 5395
    [6]
    A silencer according to claims 2 to 5, wherein the recess structure (20) is in the form of a triangle with rounded edges, the base of said triangle being on the side facing the channel (14) of the fan (12) and the top of the triangle is in the vicinity of the drive module (15).
    [7]
    A silencer according to the preceding claim, wherein said triangle has a continuous slope over the distance L and the distance x is zero, or said slope starts after a distance x greater than zero from the edge of the cover (19) of the muffler (18 ).
    8. Muffler according to claims 2 to 7, at which it deriving the cooling gas flow from the fan i (12) to the drive module (15) with using the recess structure (20) the temperature from the components below the thresholds. 9. Muffler according to claims 2 to 8, at which the muffler (18) under the compression or vacuum chamber
    (5) is positioned.
    [8]
    The silencer according to the preceding claim, wherein the silencer (18) is positioned such that the first housing (6) of the compression or
    B E2017 / 5395 vacuum chamber (5) starts after the length L of the recess structure (20).
    [9]
    A silencer according to claims 2 to 10, wherein the silencer (18) is positioned such that the cooling gas flowing through the recess structure (20) between the first housing (6) of the compression or vacuum chamber (5) and the second housing (16) from the drive module (15).
    [10]
    A silencer according to claims 2 to 11, wherein the first housing (6) of the compression or vacuum chamber (5) is placed directly on the cover (19) of the silencer (18).
    [11]
    The use of a silencer according to any one of the preceding claims for cooling a compressor or vacuum pump drive module, wherein said silencer (18) comprises a recess structure (20) on the surface of the cover (19) around a flow of cooling gas diverting to the drive module (15), the drive module (15) comprising at least one bearing (17).
    类似技术:
    公开号 | 公开日 | 专利标题
    BE1025612B1|2019-04-25|SOUND MUTE FOR COMPRESSOR OR VACUUM PUMP
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    法律状态:
    2019-06-05| FG| Patent granted|Effective date: 20190425 |
    2020-03-27| MM| Lapsed because of non-payment of the annual fee|Effective date: 20190630 |
    优先权:
    申请号 | 申请日 | 专利标题
    US201562232671P| true| 2015-09-25|2015-09-25|
    US62232671|2015-09-25|
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