• 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:
    SYSTEM FOR THE CONSTRUCTION OF AN AXIAL FAN. The present invention relates to a system for the construction of an axial blower comprising an essentially cylindrical-circular blowing tube configured around a central geometrical axis and an inner tube (24) serving as the motor casing; and presenting several mounting options for mounting the motor actuators (6) so that it is possible to mount the motor actuators extending backwards with respect to the inner tube (24) and motor actuators (6) extending basically inside the inner tube (24).
    公开号:BR112012008545B1
    申请号:R112012008545-0
    申请日:2010-10-13
    公开日:2020-11-03
    发明作者:Lars Verner Kampf
    申请人:Novenco A/S；
    IPC主号:
    专利说明:

    Field of Use of the Invention
    [0001] The present invention relates to a system for the construction of an axial fan, said axial fan comprising a blow tube configured around a central geometric axis and being essentially cylindrical-circular; where a fan rotor is configured, said fan rotor having a rotor hub essentially coinciding with the central geometric axis of the blow tube and being arranged in extension of and connected to the drive axis of a motor driver; and where, behind the fan rotor, a motor casing is provided for mounting and retaining the motor driver, said motor casing comprising an essentially cylindrical-circular inner tube having a more forward end facing towards the rotor hub and a more rear end facing away from the rotor hub and being retained in the blow tube by means of a number of ribs so that the central geometric axis of the inner tube coincides with the central geometric axis of the blow tube; and where the motor casing additionally comprises one or more mounting fittings configured to mount the motor driver to the inner tube. State of the art
    [0002] Today, several different types of axial fans of the type mentioned above are known, and are generally used to be integrated into a piping system, such as a ventilation system, where they serve the purpose of blowing air through the piping system. .
    [0003] Accordingly, an example of a fan of the type shown above is known from U.S. Patent No. 6,220,830.
    [0004] It is, therefore, a constant challenge in the development of such axial fans if it is achieved, on the one hand, that the axial fan has high efficiency so that, under certain conditions and with a determined motor power to drive the rotor. fan, an increase in high pressure is achieved and / or a high yield of air, and, on the other hand, in particular for the purpose of minimizing storage and assembly costs, is made possible by the use of relatively few constituent components build different fans that are optimized for different operating conditions.
    [0005] It is a problem in this context that it is possible to build fans that have the same radius in the inner tube, but where a fan has a fan rotor that requires a high actuation force and, therefore, a large motor drive to in order to function optimally, but where the second fan has a rotor that, on its own, requires considerably less actuation force. Purpose of the Invention
    [0006] Based on this, it is the objective of the present invention to provide a system of the type presented above, whereby it is possible, through few constituent components, to build fans that are built for different operating conditions, while simultaneously a relatively high efficiency of the fans is maintained.
    [0007] This is accomplished by means of a system of the type presented above and which is characterized by the fact that the system comprises at least one small and one large motor starter, said motor starters being both configured to mount in a socket. Assembly; and where the larger dimension of the small motor starter measured at right angles to the central geometric axis of the drive shaft is smaller than the largest corresponding dimension on the large motor starter, and where the radius of the inner tube on the inner side the inner tube is larger than the largest dimension on the small motor starter and smaller than the largest dimension on the large motor starter; and where the mounting fittings comprise a first fitting allowing the small motor to be mounted on the inner tube so that at least the part of the small motor having the largest dimension extends completely within the inner tube, and a second fitting allowing that the larger motor is mounted on the inner tube so that at least the part of the large engine that has the largest dimension extends completely behind the rear end of the inner tube.
    [0008] In this way, it is possible to obtain savings in relation to the number of different constituent components, since, for example, a given inner tube and rotor hub can be used to build fans that require very different motor drives to drive the fan rotor at the desired speed of revolution. The small motor driver not extending outside the inner tube, seen from the front side of the axial fan, contributes to a reduction in the turbulence in the air flow in the operational fan during operation.
    [0009] Particularly advantageous, the inner tube and the first mounting accessory are configured to allow the mounting of the first mounting accessory closest to the front end of the inner tube. In this way, the distance from the relatively small drive motor to the rotor hub can be minimized so that the shaft in the motor drive is tensioned as little as possible during operation.
    [00010] In this context, the inner tube and the second mounting accessory on which the large motor can be mounted can be configured to allow the mounting of the second mounting accessory closest to the rearmost end of the inner tube.
    [00011] Furthermore, the mounting accessories can additionally serve as an efficient clamp for the inner tube if they are provided with a more circular outer flange having the same outer radius as the inner radius of the inner tube.
    [00012] Particularly advantageous, the radius of the front end of the inner tube corresponds to the radius on the part of the rotor hub that is closest to the front end of the inner tube. In this way, the risk of turbulence in the air flow during operation is reduced.
    [00013] According to an additional preferred embodiment, at least individual ribs between the ribs are configured as orientation faces for the air flowing in the axial fan. List of Figures
    [00014] Figure 1 is a perspective view of an axial fan, seen in an inclined view from the front and from above.
    [00015] Figure 2 is a sectional view illustrating a section of the axial fan according to figure 1.
    [00016] Figure 3 is a sectional view illustrating a section of the fan motor enclosure according to figure 2.
    [00017] Figure 4 is a sectional view illustrating a section of an alternative modality, compared to one illustrated in figure 1 of an axial fan.
    [00018] Figure 5 is a sectional view illustrating a section of the fan motor casing according to figure 4. Modality of the Invention
    [00019] Thus, figure 1 illustrates an axial fan 1 according to the present invention, said axial fan 1 having a fan rotor 2 in the form of a propeller that is driven by a motor 6, said fan rotor 2 having a rotor hub 4 which is mounted to a rotor shaft not shown which is driven by the motor 6 around the central axis of the rotor 2.
    [00020] The rotor 2 is centrally located in a blowing tube 3 which has, at both ends, a mounting flange 7 extending outward from the blowing tube 3 and being provided with screw holes for mounting the fan axial 1 in a piping system, such as a ventilation piping system, where it serves to propel air through the piping system.
    [00021] In addition, rotor 2 has a set of rotor blades 5 extending radially outward from the rotor hub 4 and out towards the blowing tube 3 where the rotor blades 5 end a short distance from the inner side of the blow tube 3 so that the smallest possible tip space is established between the outermost end of the rotor blades 5 and the inner side of the blow tube 3.
    [00022] The axial fan additionally features a motor casing for mounting the fan motor 6, which motor has an inner tube 24 which is centrally retained in the blowing tube 3 by means of a number of ribs which, in one embodiment illustrated, additionally serve as guide faces for air flowing in the axial fan during operation.
    [00023] As it will appear, the rotor hub 4 is configured so that it has its largest diameter disposed at its most rear end, and the inner tube 24 has a diameter that corresponds to the outermost diameter of the rotor hub.
    [00024] Figures 2 and 4 now illustrate two different modalities of axial fans that have identical internal tubes 24, but where all the other constituent components are different.
    [00025] Thus, the fan illustrated in figure 1 is built with a large motor driver 6 that is mounted on the inner tube 24 by means of a mounting accessory; and where the motor driver 6 operates a fan rotor (not shown) having a relatively large outside diameter.
    [00026] The fan of figure 4 is illustrated in an alternative construction with a small motor driver 6a that is mounted on the inner tube 24 by means of a second mounting accessory 25a, and where the motor driver 6a operates a fan rotor (not shown) having a relatively small outside diameter.
    [00027] Figures 3 and 5 illustrate the inner tube 24 used for the construction of both axial fans mentioned above, but where different mounting accessories are used to mount the large and small motor drives (6, 6a), respectively. It will appear that the mounting accessories 25, 25a are configured as rotating symmetrical parts that, centrally arranged, have a mounting flange 26 for mounting a motor starter and having, more externally, a circular cylindrical flange 27, 27a which is mounted by screws to the inner side of the inner tube 24.
    [00028] For both axial fans 1, 1a above using the same central tube disposed centrally 24, it is possible that the same rotor hub can also be used in both axial fans, without giving rise to increased turbulence in the flow in the axial fan; and precisely the fan rotor being a comparatively expensive component in an axial fan, if it has to be optimized from a point of view flow to achieve high fan efficiency, it is very advantageous that the same rotor hub 4 can be used in various axial fan configurations 1,1a.
    权利要求:
    Claims (6)
    [0001]
    1. System for the construction of an axial fan (1), said axial fan (1) comprising an essentially cylindrical-circular blowing tube (3) configured around a central geometric axis, where a fan rotor (5) is configured, said fan rotor (5) having a rotor hub (4) which essentially coincides with the central geometric axis of the blow tube (3), and is arranged in extension of and connected to the drive axis in a motor driver (6), and where, behind the fan rotor (5), a motor mantle is provided to mount and retain the motor driver, said motor mantle comprising an essentially cylindrical-circular inner tube ( 24) having a more forward end facing towards the rotor hub (4) and a more rear end facing away from the rotor hub (4), and being retained in the blow tube (3) by means of several ribs (20 ) so that the central geometric axis of the inner tube (24) coincides with the central geometric axis of the blowing tube (3); and where the motor enclosure additionally comprises one or more mounting accessories (25, 25a), configured for mounting the motor driver (6) to the inner tube (24), characterized in that the system comprises at least one drive a small and a large motor (6, 6a), said motor drives (6, 6a), both of which are configured for mounting on a mounting accessory (25, 25a); and where the largest dimension of the small motor drive (6a) measured at right angles to the central geometric axis of the drive shaft is smaller than the corresponding largest dimension on the large motor drive (6); and where the radius on the inner side of the inner tube (24) is greater than the largest dimension of the small motor driver (6a) and less than the largest dimension of the large motor driver (6); and where the mounting accessories (25, 25a) comprise a first accessory (25a) allowing the small motor (6a) to be mounted to the inner tube (24) so that at least the part of the small motor (6a) that the larger dimension extends completely inside the inner tube (24), and a second accessory (25) allowing the bigger engine (6) to be mounted to the inner tube so that at least the part of the big engine (6) that has the larger dimension extends completely behind the rearmost end of the inner tube (24).
    [0002]
    2. System, according to claim 1, characterized in that the inner tube (24) and the first mounting accessory (25a) are configured to allow the assembly of the first mounting accessory closest to the front end of the inner tube (24).
    [0003]
    3. System, according to claim 1, characterized in that the inner tube (24) and the second mounting accessory (25) are configured to allow the mounting of the second mounting accessory closest to the rear end of the inner tube (24).
    [0004]
    4. System according to claim 3, characterized by the fact that at least one of the mounting accessories (25, 25a) has a more circular outer flange having the same external radius as the internal radius in the inner tube (24) so that the mounting accessory (25, 25a) embraces the inner tube (24) following the assembly inside it.
    [0005]
    5. System according to one or more of the preceding claims, characterized in that the radius of the frontmost end of the inner tube (24) corresponds to the radius since the part of the rotor hub (4) that is closest the front end of the inner tube (24).
    [0006]
    6. System according to one or more of the preceding claims, characterized in that at least some individual ribs are configured as guiding faces (20) for the air flowing in the axial fan.
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    同族专利:
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    KR101933724B1|2018-12-28|
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    WO2011044910A1|2011-04-21|
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    BR112012008545A2|2016-04-05|
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    CN112045416A|2020-09-16|2020-12-08|湖州南浔精优机械制造有限公司|A centrifugal fan placer that is used for quick installation on assembly line frame|
    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-06-02| B09A| Decision: intention to grant|
    2020-11-03| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 03/11/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA200901119|2009-10-13|
    DKPA200901119A|DK200901119A|2009-10-13|2009-10-13|System for building an axial fan|
    PCT/DK2010/050266|WO2011044910A1|2009-10-13|2010-10-13|A system for the construction of an axial fan|
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