• 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 volumetric flow meter (1), for which it is proposed to realize a measuring cone (4) and a rectifier (6) arranged in the measuring cone (4) in a foldable material so that the measuring cone (4) and the rectifier (6) can be converted between a folded transport position and an unfolded operating position.
    公开号:FR3016437A1
    申请号:FR1462910
    申请日:2014-12-19
    公开日:2015-07-17
    发明作者:Simon Brugger；Martin Rombach
    申请人:Testo SE and Co KGaA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a volumetric flow meter with a base body receiving a measurement unit and a measuring cone mounted on the base body of a foldable material, the measuring cone being convertible. from a transport position to a use position. Such volumetric flow measurement devices are known for example in the form of volumetric flow rate hoods and are used for measuring a volumetric flow rate through an inlet opening or exhaust air of a plant. building ventilation. For this purpose, the measuring cone is placed with an air inlet on the intake or exhaust air opening of the building ventilation system. The unit of measurement, for example an anemometer, can thus measure the volumetric flow rate passing through the inlet or exhaust air opening. The realization of measuring cones in a foldable material to fold the measuring cone into a transport position is well known. In this transport position, the measuring cone occupies less space and is easily transportable. It has been found that when measuring volumetric flow, large measurement errors can occur if the current to be measured has a vortex. Such measurement errors may be of the order of 50% or more of the measured values. It has therefore been proposed to use rectifiers to make the air flow vortex-free by directing or deflecting portions of current with a current angle relative to a longitudinal axis of the rectifier, which angle is above a certain threshold value. For this purpose, it has been proposed in DE 10139542 B4 to arrange a slat grid construction as a rectifier for the duration of the measurement directly on air guiding elements of an inlet opening. air performed as a whirlpool dispenser. Separate mounting of the rectifier before measurement is however necessary. The present invention relates to improving the operating properties of a volumetric flow meter. To achieve this objective, it is proposed according to the invention for a volumetric flow meter of the type described at the beginning that a rectifier of a foldable material is arranged in a cone opening 20 described by the measuring cone, that the rectifier can be converted between a transport position and a position of use and that the rectifier adapts in the position of use to the measuring cone. It is advantageous for the volumetric flow meter 25 to be equipped with a rectifier which also has smaller dimensions in the transport position. It is further advantageous that the rectifier is made available for use in the use position of the measuring cone. Additional mounting steps for fear removal can thus be omitted. This greatly simplifies the handling of the volumetric flow meter and thus improves the utilization properties. In one embodiment of the invention, a tensioning device can be provided, with which the measuring cone can be stretched from the transport position to the use position. It is advantageous to be able to operate the volumetric flow meter by simple gestures. Preferably, the tensioning device has an arrangement of tension bars which hold the measurement cone in the use position. In one embodiment of the invention, it can be provided that the rectifier can be stretched with a voltage device, for example the voltage device already mentioned. It is advantageous that the rectifier can be brought by simple operating steps in the position of use. It is particularly favorable if the rectifier can be stretched in an actuation step with the measuring cone. Thus, the volumetric flow meter can be made available for use by a single actuating step, in which not only the measurement cone but also the rectifier are converted together or one after the other in the use position. Conversely, the rectifier and / or measurement cone may be folded in this manner by the expansion of the tensioning device into the transport position.
    [0002] In a configuration of the invention, it can be provided that the measuring cone has a rigid frame on its air inlet. It is advantageous that the measuring cone can be placed with sufficient sealing on an air intake or exhaust opening of a building ventilation system. Sealing lips can be made on the rigid frame for this purpose to cause sealing.
    [0003] It can be provided that the tension device acts on the or a rigid frame which is made on an air inlet of the measuring cone. It is advantageous that a rigid frame present anyway can be used as the point of application for a tensioning device. In a configuration of the invention, it can be provided that the rectifier is detachably connected to the measuring cone. It is advantageous for the rectifier to be replaceable by another rectifier, for example a rectifier with other rectifying properties or by a new rectifier. Alternatively, it can be provided that the rectifier is connected in one piece to the measuring cone. It is fortunate that the straightener is fixed captively on the measuring cone. For example, the rectifier can be sewn into the measuring cone or welded or glued to the measurement cone or otherwise connected by bonding material, forcibly or in form.
    [0004] It is particularly advantageous if the measuring cone and the rectifier are made of an identical material. In one embodiment of the invention, it can be provided that the rectifier is arranged at least partially in a half removed from the base body and / or on an air inlet, for example the air inlet already mentioned in FIG. measuring cone. It is advantageous to be able to effectively straighten the air flow. For example, it can be provided that the rectifier is completely arranged in the half removed from the base body of the measuring cone. It turned out that this was sufficient and that a space could remain free in a half facing the base body of the rectifier without that annihilating the effect of the straightening. In a configuration of the invention, it can be provided that the rectifier forms in use position an arrangement of air passages for uniformizing a stream of air in the cone 20 of measurement. It is advantageous to create a simple type of recovery. The arrangement of air passages permits that current angles which diverge too much from a longitudinal direction of the rectifier are reverted or reflected towards the longitudinal direction. Thus, a swirl of the air stream can be reduced. It is particularly advantageous if the air passages are made in the form of a tube in the position of use, for example with a triangular, square, pentagonal, hexagonal or polygonal section. It is advantageous to be able to form a grid or honeycomb structure which has proved particularly favorable for straightening. It has been found favorable to use relatively large grid or honeycomb structures where the ratio of the length of the air passages to the diameter of the air passages is less than three. in particular is equal to one or less than one. The smaller the numbered ratio, the more the properties of a sieve predominate for the structure and the straightening function is lost. A good compromise is a ratio approximately or precisely equal to one. This choice constitutes a favorable compromise between the necessary straightening and the lowest possible weight of the volumetric flow meter. It can be provided that the air passages are separated by foldable partition walls. It is then advantageous for the air passages to be folded into the transport position so as to occupy a smaller space in the transport position. The foldable material may be for example fabric, leather and / or plastic. This simply gives a sufficiently good bending capacity of the material for sufficient stability at the same time. The present invention is now described in detail with the aid of an exemplary embodiment without being limited to this embodiment. Other exemplary embodiments result from the combination of the features of the individual protection claims or from several claims with each other and / or with individual features or features of the exemplary embodiment. The present invention is shown in a very simplified way for explaining the invention with the aid of the following figures: FIG. 1: a volumetric flow meter according to the invention in the transport position, FIG. volumetric flow meter according to FIG. 1 for the conversion of the transport position to the position of use and FIG. 3: the volumetric flow meter according to FIG. 1 - in the position of use. Figures 1 to 3 are described together in the following. A volumetric flow meter generally referred to as 1 has a measuring unit 2 known per se and not shown hereinafter for measuring a volumetric flow rate 20 which is arranged in a base body 3. The measuring unit 2 can be removed or fixed arranged in the base body 3. A measuring cone 4 is arranged on the base body 3. The measuring cone 4 is made of a foldable material and can be converted between a folded transport position (Figure 1) and a stretched use position (Figure 3) and vice versa. Figure 2 shows an intermediate position on the path of this conversion.
    [0005] In the position of use, the measuring cone 4 tends a cone opening 5 which can be placed in a manner known per se on an air intake or exhaust opening of a building ventilation installation for the measurement of volumetric flow. The measuring cone 4 thus serves to capture a stream of air and to bring this stream of air to the measuring unit 2. The volumetric flow meter according to the invention present in the cone opening 5 a rectifier 6 to standardize in the use position (Figure 3) the air stream evoked. In this way, a measurement error due to a vortex of the air stream can be reduced or completely eliminated.
    [0006] The rectifier 6 is also manufactured for the volumetric flow meter 1 according to the invention in a foldable material and can therefore also be converted between a flat transport position (FIG. 1) and an unfolded use position (FIG. 3). Figure 2 shows the rectifier 6 in the intermediate position partially stretched. In FIG. 3, it can be seen that the rectifier 6 has adapted in the use position to the measuring cone 4 and completely fills the cone opening 5.
    [0007] On the measuring cone 4, a tensioning device 7 is made, with which the measuring cone 4 can be stretched for conversion into the position of use. The tensioning device 7 may, in a manner known per se, have an arrangement of tension bars interconnected by articulation or another arrangement of tension bars. The tensioning device 7 makes it possible to tension not only the measuring cone 4 but also the rectifier 56 in an actuating step. The tensioning device 7 acts on a rigid frame 8 which is formed on an air inlet 9 of the measurement cone 4. The rigid frame 8 serves to place the measurement cone 4 in a sealed manner on the arrival opening or 10 evacuation of air already evoked from the building ventilation system. In other words, the tensioning device 7 stretches the material of the measuring cone 4 and thus of the straightener 6 because the base body 3 and the rigid frame 8 are spaced apart from each other. Once the tension device 7 is detached, the measurement cone 4 and the rectifier 6 can be folded flat. The rectifier 6 is manufactured for the exemplary embodiment shown in the same foldable material 20 as the measurement cone 4 and stitched therein. The rectifier 6 is thus connected in one piece to the measurement cone 4. For other exemplary embodiments, the rectifier 6 is detachably connected to the measurement cone 4, for example by a Velcro closure. It is recognizable in FIG. 3 that the rectifier 6 is completely arranged in the use position in a half 10 removed from the base body 3 of the measurement cone 4 on its air inlet 9. The rectifier 6 forms in a position d using an arrangement of air passages 11.
    [0008] The air passages 11 are respectively made in the form of a tube with a square section and are separated from each other by partition walls 12.
    [0009] The partition walls 12 are made of the same collapsible material as the measuring cone 4. The partition walls 12 can thus be completely folded to form the transport position according to FIG.
    [0010] The partition walls 12 are oriented in the extended use position (Fig. 3) in a cross arrangement to form a grid structure of air passages 11. This grid structure is made with relatively large mesh. The air passages 11 respectively have a length which is less than one third of the opening diameter of these air passages 11. The measuring cone 4 and the rectifier 6 are manufactured for the exemplary embodiment shown in fabric, for example example in weaving, mesh, knitting, braiding, quilted fabric of a nonwoven or felt or other flat textile. For other exemplary embodiments, the measuring cone 4 and / or the rectifier 6 may be made of leather or plastic, for example a plastic film or other foldable material. For the volumetric flow meter 1, it is proposed to make a measuring cone 4 and a rectifier 6 arranged in the measuring cone 4 in a foldable material so that the measuring cone 4 and the rectifier 6 can be converted between a folded transport position and an unfolded use position. Of course, the invention is not limited to the embodiments described above and shown, from which we can provide other modes and other embodiments, without as much beyond the scope of the invention ..
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Volumetric flow meter (1) with a base body (3) receiving a measuring unit and a measurement cone (4) mounted on the base body (3) of a foldable material, the measuring cone (4) ) convertible from a transport position to a position of use, characterized in that a rectifier (6) of foldable material is arranged in a cone opening (5) described by the measuring cone (4). ), that the rectifier (6) can be converted between a transport position and a position of use and that the rectifier adapts in the use position to the measuring cone (4).
    [0002]
    Volumetric flow meter (1) according to claim 1, characterized in that a tensioning device (7) is present, with which the measuring cone (4) can be extended from the transport position to the position of use.
    [0003]
    Volumetric flow meter (1) according to claim 1 or 2, characterized in that the rectifier (6) can be stretched with the or a tensioning device (7), in particular in an actuating step with the measuring cone (4).
    [0004]
    Volumetric flow meter (1) according to Claim 2 or 3, characterized in that the tensioning device (7) acts on a rigid frame (8) which is formed on an air inlet (9). measuring cone (4).
    [0005]
    Volumetric flow meter (1) according to one of Claims 1 to 4, characterized in that the rectifier (6) is detachably connected to the measuring cone (4) or in that the rectifier ( 6) is connected in one piece to the measuring cone (4).
    [0006]
    Volumetric flow meter (1) according to one of Claims 1 to 5, characterized in that the rectifier (6) is arranged in the use position at least partly in a half (10) removed from the base body (3) and / or on the or an air inlet (9) of the measuring cone (4).
    [0007]
    Volumetric flow meter (1) according to one of Claims 1 to 6, characterized in that the rectifier (6) forms in the position of use an arrangement of air passages (11) for standardize a stream of air in the measuring cone (4).
    [0008]
    Volumetric flow meter (1) according to claim 7, characterized in that the air passages (11) are separated from each other by foldable partition walls (12).
    [0009]
    Volumetric flow meter (1) according to one of claims 1 to 8, characterized in that the foldable material is fabric, leather and / or plastic. 25
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    同族专利:
    公开号 | 公开日
    FR3016437B1|2018-05-11|
    CN104776886A|2015-07-15|
    DE102014000241B4|2015-04-16|
    US20150198468A1|2015-07-16|
    JP6530194B2|2019-06-12|
    DE102014000241A1|2014-11-27|
    JP2015132604A|2015-07-23|
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    法律状态:
    2015-12-28| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-22| PLFP| Fee payment|Year of fee payment: 3 |
    2017-07-28| PLSC| Publication of the preliminary search report|Effective date: 20170728 |
    2017-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2019-12-30| PLFP| Fee payment|Year of fee payment: 6 |
    2020-12-29| PLFP| Fee payment|Year of fee payment: 7 |
    2021-12-27| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014000241.1|2014-01-10|
    DE102014000241.1A|DE102014000241B4|2014-01-10|2014-01-10|Flow Meter|
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