• 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:
    A fan structure comprising a diffuser unit and suspension dedicated to a fan motor usable for, among other things, fans for ventilation of stables. Energy loss, which is known in the prior art for wall fans, for ambient air is avoided by using a design that optimizes the movement of air through the fan during operation.
    公开号:DK201670640A1
    申请号:DKP201670640
    申请日:2016-08-24
    公开日:2017-11-20
    发明作者:Lau Mortensen；Thomas Lau
    申请人:Skov As；
    IPC主号:
    专利说明:

    Fan construction comprising diffuser unit. engine mounting and damper
    BACKGROUND OF THE INVENTION The invention relates to a fan structure comprising an inlet opening, a pipe piece, an outlet opening, a motor mount for a blade mounted motor and a damper, as well as a fan structure comprising further said motor mounted on wing blades. The fan structures are useful for ventilation of stables.
    Introduction.
    In order to thrive optimally, an animal herd must have fresh air at the right temperature.
    A well-known principle for such animal husbandry ventilation is Low Pressure Ventilation (LPV). The system works by drawing in the air through passive fresh air valves, for example, as wall valves in the side of the barn. The air is drawn out of the barn by means of active extraction fans located in the barn.
    Another technique is tunnel ventilation, in which the air is drawn in through large openings in the walls at one end of the barn and is drawn out through large active extraction units located in the opposite end. The system is expensive in both procurement and operation.
    Prior art in the field of ventilation of buildings does not concern the design of a vent's outlet opening to the outside.
    It is known that the mounting of a fan motor can be placed so that the motor is centrally located behind the wing blades mounting on a center axis that is rotatably mounted on a main support of the motor. This results in less engine resistance to the air being sucked through the engine's blade than if the engine was located away from the center.
    The disadvantage of the prior art is that it has not been studied whether the performance of the fan can be obtained if the fan structure has a specific design instead of the known one.
    Accordingly, there are two objects of the invention, namely, to provide a fan structure which causes the fan to become more economical in operation than if the fan sat in a structure usually used for fans, and to provide a fan structure which is more stable in operation. .
    The object of the invention is met by a fan structure according to claim 1. The fan structure has an outlet aperture in the form of a diffuser to provide low velocities at the outlet to the outside. As a result, the air pressure on the blade of the fan blade is lowered back into the system due to lower air velocity. It can also be seen as a relative suction towards the outside.
    It is important that the diffuser has a double-curved design which causes the blowout to be a relatively linear air flow, so that turbulence is minimal, thereby minimizing energy loss. It is preferred that the radius of curvature is increasing ie. the farther away from the fan wing towards the free, the greater the curvature.
    In addition, it is preferred that there is a curved seam to which a butterfly damper with a curved, aerodynamic edge may lie close when the fan is stopped. The open / close mechanism for the butterfly damper can be a loop coupling or a simple drawbar. The materials just have to be weather resistant and solid. The solution chosen must also be easy to install and does not require much maintenance.
    In addition, the engine is placed centrally behind the blade mounting on a center axis pivotally mounted on a motor head restraint. This reduces the air resistance relative to if the engine was located decentrally in the air flow. It is an advantage if the head restraint has a design where the number of arms in e.g. a cross is different from the number of blades on the blade of the fan as well as never parallel. This avoids resonance that might otherwise occur and which would cause an energy loss to the engine suspension. It also means that the suspension becomes more stable.
    The fan design is particularly suitable for gable fans used for extraction, especially in warm countries in stables where tunnel ventilation is used. The large items, inlet opening, pipe piece, outlet opening and diffuser, can be made in four parts. The smaller items can be advantageous for the logistics of transport.
    Figurines.
    The invention will then be explained in more detail with reference to the figures, where
    FIG. 1 shows a fan assembly with mounted fan according to the invention.
    FIG. 2 shows a vertical section through part of the fan structure.
    FIG. 3 shows a damper motor with a linkage mechanism anchored to a damper.
    Figure 1 shows a 3D visualization of the principle construction of a fan structure (1) according to the invention. It generally consists of an inlet flange (2), a pipe piece (3), a butterfly valve (4) and a diffuser (5). Also shown in the figure is a motor (6) mounted in the motor mount (7) of the fan structure, as well as a fan blade (8) having 3 blades.
    As shown, the inlet flange (2) is divided into four parts for logistics and transport to the end-user. The same applies to the pipe piece (3) and the diffuser (5) ·
    The inlet flange (2) and the pipe piece (3) are designed to be assembled and mounted in a suitable hole in a wall / gable. This hole may be round or square depending on the building structure. The hole should fit the pipe piece, which should be in the hole. The flange is designed to abut against the wall / gable and for attachment to the wall / gable.
    The motor (6) is located centrally and is directly coupled to the fan wing (8). The motor (6) thus provides the least resistance to the air. This results in a more energy efficient solution, as there are no losses to, for example, belt pulls or the like, and at the same time the product becomes more durable with less need for maintenance.
    The engine suspension (7) is made of plastic and the profile of the four legs is designed aerodynamically to provide good flow with minimal turbulence. At the same time, the four legs are angled so that they will never be parallel to the fan blades.
    This reduces noise and the risk of intrinsic fluctuations. The latter has also been tried by the fact that the number of wings and legs is different.
    FIG. Figure 2 shows in 3D a vertical section through the fan structure. The diffuser (5) is formed with a double curved surface (9) internally, so that the angle of propagation is initially low and slowly increasing more and more.
    This results in a greater effect of the diffuser (5) than if it were designed as a conventional cone-shaped diffuser.
    The diffuser (5) aims to increase the performance by generating a controlled pressure loss as the air expands on the road through the diffuser (5), where the diameter slowly becomes larger. This results in a suction effect which causes more air to be drawn through the fan. In the center, the butterfly damper (4) is shown in the open position. The damper (4) is intended to close and seal so that no air is drawn into the barn when an installed fan is not in use. The damper (4) abuts against an edge (10) around the fan tube (3), as well as against a vertical center post (11) which faces the joint between the two halves of the butterfly damper. The center post (11) is intended to provide stability to the damper (4) as it stiffens as the vacuum in the stable sucks the damper (4) inwards. At the same time, a swivel hinge (12) of the damper is mounted on the center of the post, which makes the damper (4) apart from being hinged at the top and bottom, also hinged in the middle. Hereby the damper (4) also cannot move outwards due to wind and pressure effects.
    The damper (4) is operated by a damper motor (13) mounted on the center post (11). Hereby, it is located behind the hub of the wing (8), thereby minimizing disturbance in the air flow, while also being located so that it is accessible from the housing side. Other gable fans with forced throttle (4) have the damper motor (13) located externally, so that in service situations you have to go in and out of the barn.
    Fig. 3 shows the damper motor (13) in 3D. It is driven by a gear motor. This can rotate a quarter turn and the movement is transferred to the damper (4) by means of a linkage mechanism. The damper motor (13) rotates an angular shaft so that an arm (14) is moved. This pushes and pulls, respectively, when opening and closing the damper (4). The arm (14) is coupled to the damper (4) at an intermediate piece (15) having an eye (16) at each end which can rotate freely relative to one another. The coupling between this spacer (15) and the arm (14), as well as between the spacer (15) and the damper (4) is effected by means of a fork joint (17) coupled to an eye of the spacer by means of a pawl, while the base of each fork joint is pivotally connected to the arm (14) and the damper (4), respectively. Thus, the articulation mechanism has degrees of freedom in all directions, which is essential in order to be able to transfer the forces to the damper (4).
    The exchange in the joint mechanism is made so that the gear motor travel creates both a bias on the damper (4) in the closed and in the open position. The bias means that wind and pressure influences cannot immediately move the damper position. The articulation mechanism is symmetrical about the vertical plane of symmetry of the fan, so that the damper halves (4) will be opened synchronously and without distortion. The damper halves have recesses in the material, so that the halves fit into each other in the overall condition with fully open damper. In this way, the folded damper halves together will be almost as rigid and fill as little in the air flow as an undivided damper of the same size.
    权利要求:
    Claims (10)
    [1]
    A fan structure with an inlet opening, a pipe piece, and an outlet opening out to the outside dedicated to a fan comprising a motor mounted on wing blades and suspended in a motor suspension in the inlet opening or pipe piece characterized in that the outlet opening comprises a diffuser.
    [2]
    The fan assembly of claim 1, wherein the diffuser has a double-curved configuration.
    [3]
    Fan assembly according to claim 2, wherein the radius of curvature of the diffuser increases towards the outside.
    [4]
    Fan motor mounting bracket according to claim 1, 2 or 3, characterized in that the suspension has a cross-shaped configuration with the motor in the middle and wherein the number of arms in the junction is different from the number of wings.
    [5]
    The fan assembly of claim 1, 2 or 3, wherein the fan assembly comprises a suspension according to claim 4.
    [6]
    The fan assembly according to claim 5, wherein the fan assembly further comprises a motor with mounted blade blades.
    [7]
    A fan assembly according to any one of claims 1 to 6, wherein the fan assembly further comprises a damper and a linkage mechanism with associated motor, the linkage mechanism comprising an arm anchored to the motor at one end and rotatably anchored to the motor by means of a movable link. the first end of a spacer whose ends can rotate freely relative to each other and the other end of the spacer is pivotally anchored to the damper by a second movable joint, whereby forces from the motor of the arm can be transferred to the damper so that the ends are moving in all directions.
    [8]
    A fan assembly according to claim 7, wherein the ends of the spacer each have an eye and said swivel joint is constituted by a fork joint connected to one of said eyes, one at each end of the spacer, with a pawl passing through the eye and closing. the fork joint and the base of which is pivotally anchored to the arm and damper respectively.
    [9]
    A fan assembly according to any one of claims 1 to 8, wherein the inlet port, pipe piece, outlet port and diffuser are piece together of smaller parts.
    [10]
    Use of a fan structure according to any one of claims 6 to 9 for ventilation of stables.
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    同族专利:
    公开号 | 公开日
    DK179134B1|2017-11-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3802328A|1972-04-12|1974-04-09|Nissan Motor|Deflecting nozzle for a motor vehicle ventilating system|
    DE3516910A1|1985-05-10|1986-11-13|"Schako" Metallwarenfabrik Ferdinand Schad KG Zweigniederlassung Kolbingen, 7201 Kolbingen|Ventilation device for rooms in flats or the like|
    WO1996041520A1|1995-06-09|1996-12-27|P-Beton A/S|Method and system for ventilation of a building|
    WO2005061078A1|2003-12-22|2005-07-07|Turbovent A/S|Air cleansing apparatus|
    DE202004017333U1|2004-11-09|2006-03-16|Ziehl-Abegg Ag|stable ventilation|
    DE102010047922A1|2010-10-08|2012-04-12|Martin Schönhammer|Ventilation installation unit, particularly for space-, especially stable ventilation for agricultural animal stable, has air channel for cross-sectional surface and compressor under utilization of jet pump principle|
    AU2016100030A4|2016-01-13|2016-02-25|Asmir Causevic|Roof exhaust fan|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201670079|2016-02-15|PCT/DK2017/050028| WO2017140315A1|2016-02-15|2017-02-08|Wall fan construction including diffuser unit, suspension for motor and damper|
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