Device for controlling an air volumetric flow

Abstract

A device for regulating the air volume flow, in particular in an air distribution network, has a central air channel through which air can flow. The device has a throttle valve which is arranged in the air channel and which has at least one first throttle valve part with a first blocking element and a second throttle valve part with a second blocking element. The orientation of the second barrier element relative to the first barrier element is variable in order to change the size of the cross-section of the air channel through which the flow can flow. The first blocking element and the second blocking element are designed in such a way that the first blocking element and the second blocking element, in almost all positions between the first end position and the second end position, form a part of a cross-section through which flow can pass in almost each radial direction. In at least a portion of the position between the first end position and the second end position, the cross-section through which the flow can flow widens towards the longitudinal center axis. The device for regulating the volume flow rate according to the invention optimizes the outflow behavior.

Description

Technical Field

[0001] The invention relates to a device for regulating an air volume flow, in particular an inlet valve and / or an outlet valve. Background Art

[0002] Air distribution networks are used, in particular, in buildings for ventilation and exhaust air and partly for air conditioning of rooms. Controlled residential and office ventilation installations are now well-established systems which use central or decentralized ventilation devices.

[0003] Wall, ceiling or floor openings in buildings have air ducts with inserts, which are connected to an air distribution network. Such air ducts change the shape of the air flow and / or they adjust the air volume flow. Depending on the direction of the flow entering or leaving the room, the air ducts are called inlet valves or outlet valves. The air ducts limit the cross section in the air duct, wherein the size of the restriction can be selected with the aid of a throttle valve.

[0004] Unfortunately, such inlet or outlet valves are usually not adjustable in the installed state or can only be adjusted with relatively great effort. Another disadvantage is that, depending on the degree of adjustment of the valve, the individual components of the valve protrude into the room to varying degrees, are prominently set off by the building wall and impair the visual appearance of the room.

[0005] Inlet valves, i.e. valves through which air flows into the room, also generally have the disadvantage that they distribute the outflowing air unevenly. People who are sitting or lying down and are directly exposed to the outflowing air may find this uncomfortable. In addition, this results in strips of dirt accumulation that are more visible than a uniform accumulation. The uneven outflow characteristics also lead to increased noise generation.

[0006] Another disadvantage is that the exhaust valve, ie the valve through which the air flows out of the room, usually has a different shape than the intake valve. This leads to a less peaceful appearance in the room.

[0007] WO 2022 / 101056 A1 discloses an air volume throttle valve having an air guide body in the form of a rotor wing. The air guide body is formed by a first air guide unit and a second air guide unit, which can be twisted relative to each other so that the spacing between the air guide bodies can be changed, thereby changing the cross section of the air channel through which the air can flow. The device realizes a change in the free flow cross section in a constant portion of the narrowest flow cross section. This makes it easier to control the valve. Summary of the invention

[0008] The object of the invention is to provide an improved device for regulating a volume flow.

[0009] A device having the features of the invention achieves said object.

[0010] The device for regulating the air volume flow, in particular in an air distribution network, according to the present invention has an air channel through which air can flow. The air channel defines a longitudinal center axis and a radial direction. The device has a throttle valve arranged in the air channel, wherein the throttle valve has at least one first throttle valve component and a second throttle valve component, wherein the first throttle valve component has a first blocking element and the second throttle valve component has a second blocking element. The orientation of the second blocking element relative to the first blocking element is changeable in order to change the size of the cross section through which air can flow in the air channel. The minimum size of the cross section through which air can flow is achieved in the first end position of the second blocking element relative to the first blocking element, and the maximum size of the cross section through which air can flow is achieved in the second end position. According to the present invention, the first blocking element and the second blocking element are configured so that the first blocking element and the second blocking element constitute a part of the cross section through which air can flow in almost all positions between the first end position and the second end position in almost every radial direction, wherein in at least a part of the positions between the first end position and the second end position, the cross section through which air can flow widens toward the longitudinal center axis.

[0011] The air duct is preferably a central air duct.

[0012] According to the invention, therefore, in almost every setting of the throttle valve, there is a cross section through which flow can flow in every radial direction. This is in contrast to known blocking elements in the form of wing segments in the form of sectors, which do not allow for a through-flow region within the blocking sector.

[0013] The distribution of the cross-sectional area through which the flow can pass is changed compared to the prior art to homogenize the outflow behavior. The distribution can be achieved, for example, by distorting the shape of known blocking elements, in particular throttle flaps. For example, the known fan-shaped shape can be bent until an arc shape is produced. This can be achieved in Fig.14 and Fig.15 However, other types of distortion are also possible, for example by embedding lateral grooves and / or through-openings in the blocking element.

[0014] Since the cross section through which the flow can flow widens in the direction of the longitudinal center axis, small outflow angles are avoided. Since no gap flow occurs as a result, the acoustic properties are improved. The noise load is minimized. The cross section through which the flow can flow usually ends at a distance from the longitudinal center axis.

[0015] The widening of the cross section through which flow can flow can occur continuously or stepwise from the outer circumference of the throttle valve to the longitudinal center axis. Preferably, however, this only relates to the inner region. That is, a taper may also be present radially outward in the cross section through which flow can flow. Preferably, in at least a portion of the positions between the first end position and the second end position, the cross section through which flow can flow first tapers toward the longitudinal center axis and then widens.

[0016] Preferably, in at least a portion of the positions between the first end position and the second end position, the cross section through which flow can flow forms a plurality of L-shaped regions divided by the first blocking element and the second blocking element. The short sides of the L-shaped regions preferably form widened through-flow regions near the longitudinal center axis.

[0017] Since small angles are avoided, the L-shape achieves an optimal outflow characteristic. Furthermore, the L-shape can be realized in a simple manner.

[0018] At least the long side of the L-shaped region is preferably formed in a curved manner. In some embodiments, the transition between the long side and the short side of the L-shaped region is formed in a rounded manner.

[0019] In the case where the device is installed in a wall opening, the position of the blocking element can preferably be changed. This makes it easy to adjust the air flow desired for living comfort.

[0020] According to an embodiment, the blocking element can be moved motor-driven, for example, according to sensor values ​​and / or by triggering a motor remotely. Preferably, however, the blocking element is manually mechanically adjustable. The individual positions are preferably kept fixed, for example by means of rasterization.

[0021] The first blocking element and the second blocking element can be designed differently. Preferably, the first blocking element and the second blocking element can be rotated or at least pivoted relative to each other. Preferably, the first blocking element and the second blocking element are wings designed to be curved in the radial direction.

[0022] The first blocking element is preferably a wing extending away from the longitudinal center axis toward the free end. The ends are alternately connected to the peripheral ring. Preferably, the first blocking element terminates in a common area in the area of ​​the longitudinal center axis, which is referred to as the central blocking center component.

[0023] The second blocking element is preferably a wing extending from the common peripheral ring toward the longitudinal center axis, but terminating freely at a distance from the longitudinal center axis. Thus, the second blocking element constitutes a free end in the region of the longitudinal center axis.

[0024] The widening of the cross section through which the flow can flow can be obtained in different ways and methods by correspondingly designing the first blocking means and / or the second blocking means. In a preferred embodiment, the free end of the second blocking element is arranged around a central free area, the cross section of which is larger than the cross section of the central blocking intermediate part. As a result, there is a free annular area, which is only partially covered by the first blocking element. The areas evenly distributed on the inner circumference prevent gap flows and optimize uniform outflow.

[0025] The second blocking element is preferably designed to be flat. This makes it easier to change the relative position, for example, to rotate the second throttle valve component.

[0026] In a preferred embodiment, the second blocking element is a part of a throttle disc or a throttle body, which is rotatably supported at its circumference. In this way, the throttle body can be constructed open in the center, so that the widened area can be realized in a simple manner.

[0027] If the first barrier element forms a curved flow surface, the flow behavior can be additionally optimized, in particular the pressure losses can be minimized.

[0028] In a simple embodiment, the throttle valve is formed by a first throttle valve part and a second throttle valve part. In other embodiments, the device has a third throttle valve part, which has a third blocking element, which is arranged superimposed on the first blocking element. The second blocking element is arranged between the first blocking element and the third blocking element and can move relative to the first blocking element and the third blocking element. This achieves a further improvement in the flow behavior. In addition, the embodiment can be used optimally as an inlet valve and an outlet valve, that is, for two flow directions of the air distribution network.

[0029] If the third barrier element forms a curved outflow surface, the flow behavior is optimized and in particular the pressure losses are minimized.

[0030] In a preferred embodiment, the first throttle valve component and (if present) the third throttle valve component are configured to be rotationally fixed, and the second throttle valve component is configured to be rotatable around the longitudinal center axis. In other embodiments, other components in the components are rotationally fixed or movable or rotatable.

[0031] If the device has a housing designed to be received in a wall opening, in particular designed to be received in a clamped and / or sealed manner in a wall opening, installation in the wall opening can be facilitated. Preferably, corresponding sealing rings and / or clamping rings are provided on the circumference of the housing.

[0032] In a preferred embodiment, there is also an internal flow element. The flow element has a housing, which is arranged at a distance from the first throttle valve component and the second throttle valve component, and if present, is arranged at a distance from the third throttle valve component. The housing has a circumference, which increases away from the throttle valve. The separation of the internal flow element and the throttle valve enables the adjustment of the throttle valve without changing the visual appearance of the air inlet valve or the exhaust valve in the room of the building. The lowermost part of the valve always extends into the room at the same distance. Thus, the valve can be adjusted differently with respect to the air volume flowing through, wherein the valve still obtains a uniform appearance in the room despite this. The flow element is preferably bell-shaped. If the air channel between the lower side of the throttle valve and the housing of the flow element is preferably mostly curved and if the air channel is introduced into the room almost parallel to the cover surface, the flow performance is additionally improved.

[0033] Preferably, the inner flow element also provides access to the adjusting mechanism of the throttle valve in the installed state of the device. The access can be closed, for example, by means of a removable and reinstallable cover.

[0034] Alternatively, the flow element can be removed in a simple manner in order to gain access to the adjusting mechanism of the throttle valve. Preferably, the flow element can be fastened to the housing or the throttle valve by means of a latching closure or a bayonet closure.

[0035] A preferred device for regulating the volume flow of air, in particular in an air distribution network, has an air channel through which flow can flow and a throttle valve arranged in the air channel. The throttle valve can be used to change the size of the cross section through which flow can flow. The throttle valve has an adjustment mechanism for changing the cross section through which flow can flow. In addition to the throttle valve, the device also has a flow element, which is arranged in the air channel and has a housing, the circumference of which increases away from the throttle valve. The adjustment mechanism is operable when the device is installed in a wall opening. The flow element is preferably a central flow element.

[0036] The adjusting mechanism preferably enables a manual or exclusively manual change of the throttle valve setting. The individual positions are preferably kept fixed, for example by means of rasterization.

[0037] Since the throttle valve can be adjusted with the valve installed, it is possible to check during adjustment whether the desired air volume flow is achieved and whether the acoustic behavior of the valve is acceptable with regard to living comfort.

[0038] In the installed state of the device, the flow element is preferably located on the side of the throttle valve facing the building interior, ie in the case of an air inlet valve downstream of the throttle valve in the flow direction. The flow element ensures an optimal flow distribution in the building interior.

[0039] In one embodiment, the flow element can be removed and reinstalled in order to provide access to the adjustment mechanism when the device is installed in a wall opening. Preferably, the flow element can be releasably fastened to the remaining device without tools, for example by means of a latching closure or a bayonet closure.

[0040] Alternatively or additionally, the flow element has a through-opening which enables access to the adjusting device. This has the advantage that the flow element does not have to be disassembled.

[0041] In one embodiment, the through-opening is arranged centrally. This is optimal for a centrally supported throttle disc or throttle body. In other embodiments, the through-opening is arranged in a distributed manner in the housing of the flow element. This is particularly suitable for a distributedly supported throttle disc or throttle body.

[0042] The flow element is preferably designed to be open on its side facing away from the throttle valve. Preferably, the opening is closed by means of a cover. The cover can preferably be mounted and removed without tools in order to provide access to the through-opening and / or the regulating mechanism. Preferably, the cover is held on the flow element by means of a magnet. The cover can also be detachably arranged on the flow element, for example, by means of a clamping element or a latching element. The cover optimizes the appearance of the valve in the interior of a building. In addition, the cavity closed by means of the cover can be used to arrange other elements, for example for sensors or actuators.

[0043] In a preferred embodiment, the throttle valve has at least one first throttle valve part and a second throttle valve part, wherein the first throttle valve part has a first blocking element and the second throttle valve part has a second blocking element. The orientation of the second blocking element can be changed relative to the first blocking element in order to change the size of the cross-section through which the flow can flow. Preferably, the housing of the flow part is arranged spaced apart from the first blocking element and / or the second blocking element in the flow direction.

[0044] In a preferred embodiment, the second throttle valve part is supported in a guided manner on its circumference. This allows fine adjustment of the throttle valve, especially when the adjustment mechanism is arranged in a distributed manner, especially on the circumference of the second throttle valve part. Preferably, the second throttle valve part is rotatable, wherein the adjustment mechanism is arranged in a distributed manner.

[0045] Fine adjustment is also optimized if the second throttle valve element is mounted centrally, but the adjusting devices are arranged distributedly, in particular on the circumference of the second throttle valve element.

[0046] In a preferred embodiment, the second throttle valve element is unguided and unsupported in the central region. This makes it possible to form a widened flow-through cross section of the throttle valve and to prevent a sharp gap opening with an undesirable acoustic behavior.

[0047] The adjusting mechanism can be constructed in different ways and methods. Preferably, the adjusting mechanism has a toothed portion and a gear engaged with the toothed portion. The geared portion is preferably the head of a rotating pin, and the toothed portion is preferably arranged at the second throttle valve component. Other transmission mechanisms can also be used.

[0048] If a rotating pin is used, it preferably has a pin which is accessible through a through-opening of the flow element in order to rotate the gear along the toothing by rotating the pin. Alternatively, the pin can protrude through the through-opening.

[0049] Preferably, the pin has a receiving opening for receiving a tool. Alternatively or additionally, the pin preferably has an outer surface for non-slip contact with the aid of a tool and / or by hand, for example embossing.

[0050] In addition to the through-opening, the housing of the flow element is preferably designed to be closed at the top. As a result, the air flow is guided outwards from the throttle valve along the flow body and cannot penetrate the flow body.

[0051] Preferably, the flow element is designed in one piece. This also applies to the first throttle valve part and the second throttle valve part and (if present) to the third throttle valve part. The third throttle valve part is preferably a part of the housing of the valve, at which or in which the remaining parts of the throttle valve and the flow element are arranged.

[0052] Preferably, the flow element has a bell-shaped shape with a cross section widening away from the throttle valve and an outer shell that is curved inwards. This shape optimizes a uniform outflow of the air volume flow.

[0053] Preferably, the flow element has, at its end facing away from the throttle valve, an outflow edge that is curved toward the throttle valve. This likewise optimizes the outflow behavior of the air volume flow.

[0054] If the housing is spaced apart from the first throttle valve part and the second throttle valve part and, if present, from the third throttle valve part, it is possible to ensure that the same air volume flow rate is maintained downstream of the throttle valve and that the visual appearance of the device in the interior of the building does not change when the throttle valve setting is changed.

[0055] Preferably, when the setting of the throttle valve is changed, the orientation of the flow element relative to the housing or relative to the wall surface does not change. Likewise, when the setting of the throttle valve is changed, the cross section of the outlet channel or the outlet of the air channel preferably does not change.

[0056] Other implementations are given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Preferred embodiments of the present invention are described below with reference to the accompanying drawings, which are only used for illustration and should not be interpreted as limiting. In the accompanying drawings:

[0058] Figure 1 A longitudinal section through the device according to the invention installed in a wall opening is shown;

[0059] Figure 2 Shows the basis for observation from above Figure 1 An exploded view of the device;

[0060] Figure 3 Shows the basis for viewing from below Figure 1 a first exploded view of a device;

[0061] Figure 4 Shows the basis for viewing from below Figure 1 a second exploded view of the device;

[0062] Figure 5 Shows the basis for observation from above Figure 1 A perspective view of the device in a partially closed position of the throttle valve;

[0063] Figure 6 Show according to Figure 5 A perspective view of the device in a fully open position of the throttle valve;

[0064] Figure 7 Shows the base without flow element and cover viewed from below Figure 1 A stereoscopic view of the device;

[0065] Figure 8 Shows the base without cover as viewed from below Figure 1 A stereoscopic view of the device;

[0066] Fig. 9 Shows the basis for observation from above Figure 1 A view of the device in a partially closed position of the throttle valve;

[0067] Fig.10 Shows the basis for observation from above Fig. 9 A view of the device in a fully open position of the throttle valve;

[0068] Fig.11 shows a view of the second throttle valve component from above,

[0069] Fig.12 shows a view of the second throttle valve component viewed from below;

[0070] Fig.13 A perspective view showing a second throttle valve component;

[0071] Fig.14 A schematic diagram showing a conventional throttle valve;

[0072] Fig.15 A schematic diagram showing a throttle valve according to the present invention; and

[0073] Fig.16 Shown in accordance with Fig.14 and Fig.15 Graphical representation of the distribution of blocking surfaces on the circumference and radius in a throttle valve.

[0074] Identical parts are provided with the same reference numerals. DETAILED DESCRIPTION

[0075] Figure 1 The valve V according to the invention is shown installed in a wall opening 10 in a wall 11. The wall opening 10 is preferably part of an air distribution network of a building. The terms "below" and "above" used in this text relate to the installation position of the valve in the wall opening of the ceiling of the building. If the wall opening is in another wall of the building, the terms should be interpreted accordingly.

[0076] The valve V is an air outlet valve which conducts air from a room of a building into the wall opening 10 or it is an air inlet valve which directs air from an air distribution network through a wall opening into a room of a building.

[0077] The valve V is described below as an inlet valve, wherein the valve is designed identically in its function as an outlet valve.

[0078] As in Figures 2 to 4 As can be clearly seen in FIG. 1 , the valve V has a housing 2 , an inner flow element 3 , a rotary pin 4 , a cover 5 and a throttle valve 6 .

[0079] The housing 2 is preferably constructed in two parts. The housing preferably has a circular cross section. The first housing part 20 has a hollow cylindrical base body 200, the lowermost end of which forms a flange 201 protruding radially outward. The valve V is placed against the building wall 11 by means of the flange 201, such as at Figure 1 The first flange 201 is preferably rigid and serves as a stop when the valve V is pushed into the wall opening 10, as shown in Figure 1 The first flange forms a stop for covering irregularities in the surrounding wall 11 .

[0080] The base body 200 has a first step 202 and a second step 203 on its outer circumference. The circumferential upper end face 204 is preferably flat and has a groove 205 for passing the rotary pin 4 therethrough.

[0081] A third throttle valve 22 , which is described below together with the first and second throttle valve parts 60 , 61 of the throttle valve 6 , is formed in the upper region of the first housing part 20 .

[0082] The second housing part 21 has a narrow, hollow cylindrical or annular base body 210. The base body is surrounded by a radially protruding second flange 211. The second flange 211 is preferably designed as a flexible sealing ring and / or clamping ring. The second flange is used to seal the valve V and to detachably fasten the valve V in the wall opening 10, such as in Figure 1 As can be seen in . For this purpose, the wall opening 10 preferably has a circular cross section. The second flange 211 can be sprayed, molded in one piece or connected to the second base body 210 in other ways and methods.

[0083] The second housing part 21 surrounds the upper region of the first housing part 20 , is located on the first step 202 and preferably extends as far as the second step 203 .

[0084] The housing 2 encloses a central air duct which defines a longitudinal center axis L and a radial direction.

[0085] An internal flow element 3 is arranged in the housing 2, which extends downwards towards the interior of the building, such as in Figure 1 As can be seen in FIG. The inner flow element 3 is preferably hollow and can be closed toward the bottom by means of a cover 5. The flow element 3 is designed to be closed at the top except for the through-opening 33 for passing the rotary pin 4.

[0086] The flow element 3 is preferably designed to be essentially rotationally symmetrical. It has a bell-shaped shape with a cross section that widens downwards and an inwardly curved outer shell 30. The flow element 3 preferably extends up to the outer edge of the first flange 201 or extends beyond the outer edge.

[0087] The flow element 3 is fixedly held in the first housing part 20, preferably by means of a bayonet closure or another detachable and re-establishable connection. The coupling element is preferably arranged in the region of the longitudinal center axis L. Figure 2 2 and 3. The coupling element 220 of the first housing part 20 and the matching coupling element 34 of the flow element 3 can be clearly seen in FIG. The coupling element is a plug-and-screw connection in the form of a bayonet closure.

[0088] As in Figure 1As can be seen in FIG. 1 , a flow channel, here referred to as air channel 8, is formed between the first housing part 20 and the flow element 3. The air channel leads from the wall opening 10 through the throttle valve 6 and through the annular gap between the first flange 201 and the housing 30 of the flow element 3 into the building interior. Regardless of the adjustability of the throttle valve 6 described below, the gap is usually always the same size. Therefore, even when the adjustment of the throttle valve 6 is changed, and thus when the flowable cross section of the throttle valve 6 changes, the outflow cross section of the valve V remains the same.

[0089] The upwardly curved outflow edge 31 of the flow element 3 together with the first flange 201 which is also inclined upward optimizes the outflow behavior, as shown in Figure 1 As can be seen in .

[0090] The flow element 3 has a lower annular edge which forms a flat lower end face 32, against which the cover 5 rests. The annular edge surrounds an inlet opening which leads into the hollow interior. The cover 5 has a base plate 50 which has a preferably flat lower end face 51. The cover can preferably be placed on the flow element 3 and removed from it without tools. For this purpose, magnets are provided in both components. Figure 1 The magnet of the flow element 3 can be seen in FIG. The magnet is provided with reference numeral 35. Figure 2 and Figure 4 The magnet of the cover 5 can be seen in FIG.

[0091] The flow element 3 is preferably arranged in a positionally fixed manner relative to the housing 2 and is preferably not adjustable at least in the direction of the longitudinal center axis L, ie not axially adjustable.

[0092] A throttle valve 6 is arranged in the upper region of the valve V. The throttle valve has an adjustable element for selectively narrowing the central air channel. The throttle valve thus has a variable cross section which determines the air flow that can flow through the central air channel. The variable cross section determined by the throttle valve 6 is referred to herein as the flow-through cross section.

[0093] Downstream of the throttle valve 6 in the flow direction, i.e. towards the building interior, the cross section of the central air channel is preferably no longer adjustable. However, the cross section is not necessarily the same size everywhere. The downstream cross section is preferably formed by the distance between the preferably inwardly curved inner wall of the housing 2 and the outer shell 30 of the flow element 3.

[0094] In the embodiment, the throttle valve 6 is composed of three components. The first throttle valve component 60 is connected to the housing 2 and / or the third throttle valve component 22 in a rotationally fixed manner. The third throttle valve component 22 is formed in one piece with the housing 2 and is also rotationally fixed with respect to the first throttle valve component 60. The second throttle valve component 61 is arranged between the first throttle valve component 60 and the third throttle valve component 22 and can be pivoted or rotated about the longitudinal center axis L.

[0095] In other embodiments, the third throttle valve member 22 is also preferably an independent component connected to the housing 2 in a rotationally fixed manner. In other embodiments, there are only the first throttle valve member 60 and the second throttle valve member 61, but no third throttle valve member 22, or there are only the second throttle valve member 61 and the third throttle valve member 22, but no first throttle valve member 60. If there are only two throttle valve members, the second throttle valve member 61 is also preferably configured with an optimized configuration of its upstream surface or downstream surface.

[0096] The first throttle valve part 60 has a blocking element in the form of a first wing 601 similar to a rotor, which extends outwardly from a common central part. The central part forms the first coupling element 600. In the example described, there are five first wings 601. However, three, four, six or other numbers of wings can also be used.

[0097] A hook or protrusion 602 is molded at the end side of the free end of the first wing 601. The hook or protrusion is used to mount an exhaust filter and / or a cover. The hook or protrusion is placed, for example, on the upper end face of the second throttle valve component 61. This Figure 1 , Figure 5 and Figure 6 It can be clearly seen in.

[0098] The first wing 601 widens toward its free end. Preferably, all wing 601 are identically shaped and equally large. The first wing 601 is curved in the radial direction. Preferably, the exposed surface between two wing 601 corresponds to the surface of the wing 601 .

[0099] The upper incident surface of the first wing 601 is preferably designed to be curved, so that an aerodynamically favorable body is formed.

[0100] The third throttle valve part 22 has a blocking element in the form of a third wing 221, which forms a geometric counterpart to the first wing 601. Therefore, in the example described, the blocking element is also designed to be curved in the radial direction. The third wing 221 does not end freely, but the peripheral end of the third wing is molded on the inner wall of the first housing part 20. The central end of the third wing transitions in one piece into the central part formed by the second coupling element 220.

[0101] The first coupling element 600 has a hook 603 protruding downwards, which engages in a receiving opening of the second coupling element 220. In the manner described, the first throttle element 60 is connected to the third throttle element 22 and also to the housing 2 in a rotationally fixed manner.

[0102] In the case of the assembled valve V, the first wing 601 and the third wing 221 are aligned with each other. The first wing 601 and the third wing 221 overlap each other. Preferably, the free surface of the third wing 221 is also curved. Therefore, the outflow surface is also optimized aerodynamically. Preferably, the flow surfaces of the first wing 601 and the third wing 221 are curved in the same way, so that the valve V forms the same flow surface and outflow surface, so that it can be used for intake and exhaust in the same way.

[0103] The second throttle valve component 61 located therebetween has an outer ring 610. An inwardly projecting blocking element in the form of a second wing 611 is molded on the upper end of the outer ring 610. The outer ring 610 rests with its free lower end of the outer shell on the second step 203 of the housing 2. The outer ring also rests with its inwardly projecting, upper, surrounding edge on the upper end face 204 of the housing 2. This is Figure 1 , Figure 2 , Figure 3 and Figure 4 It can be clearly seen in.

[0104] The ring 610 and thus the second throttle element 61 are rotatable about the longitudinal center axis L, wherein the second throttle element is guided during the rotation by the base body 210 of the second housing part 21 and is fixed in its axial position by the bead 602 of the first throttle element 60 .

[0105] The second wing 611 of the second coupling part 61 ends freely toward the longitudinal center axis L. The second wing is also curved, wherein the second wing preferably has the same bending radius as the first wing 601 and the third wing 221. Preferably, the number of the second wing 611 is the same as the number of the first wing 601 and the third wing 221. The second wing 611 can be flat. Other configurations are possible.

[0106] Thus, the second throttle disc 61 forms a flat disc with a surrounding guide housing, wherein the disc is arranged between the flat end faces of the first wing 601 and the third wing 221 and can rotate relative to the end faces. The rotation is preferably continuous. In other embodiments, the rotation is stepwise. In all cases, preferably there is an optical, tactile and / or acoustic mechanism to indicate to the user when a discrete position of the throttle disc 61 has been reached. In addition, such a mechanism prevents unintentional adjustment.

[0107] The rotation of the throttle disk 61 serves to adjust the valve V. The rotation is preferably carried out manually. Alternatively or additionally, however, the rotation can also be carried out by motor drive.

[0108] The adjustment can preferably also be performed when the valve V is already installed in the wall opening 10. In a simple embodiment, this can be performed by removing the flow element 3 and the cover 5. In a preferred embodiment, which is shown only by way of example, only the cover 5 is removed, if any. The through-opening 33 in the housing 31 of the flow element 3 provides access to the adjustment element, here to the rotary pin 4. This is done in Figures 1 to 4 as well as Figure 7 and Figure 8 It can be clearly seen in.

[0109] The rotating pin 4 has a pin 40, a head 41 configured as a gear, and embossing 42 on the circumference of the free end of the pin 40. When the rotating pin 4 is rotated by hand without using other tools, the embossing 42 increases the grip. Figure 7 and Figure 8 As shown in , there is preferably a tool 9 which can be inserted around or into the pin 40. Depending on the embodiment, the pin 40 is formed with a hexagonal socket, a slot, a cross slot or a Pozidrivium in order to be rotated by means of a correspondingly shaped pin-shaped tool 9.

[0110] The rotation pin 4 passes through the groove 205 of the first housing part 20, as shown in Figure 1 and Figure 2 Here, the head 41 is placed on the first housing part 20.

[0111] The second throttle valve member 61 has a toothing 612 in the region of its inner circumference. The gear of the head 41 engages in the toothing 612 due to the groove 205. By rotating the rotating pin 4, the second throttle valve member 61 can be rotated about the longitudinal center axis L. Therefore, the position of the second wing 611 relative to the first wing 601 and the third wing 221 can be adjusted manually.

[0112] Preferably, the first housing part 20 has a scale 222 next to the recess, which cooperates with the reference 614 of the second throttle valve part 61. This allows the adjustment of the throttle valve to be noted and the rotational position of the wings relative to each other to be recognized. This can be done at Figure 2 and Figure 3 Seen in.

[0113] exist Figure 7 4 shows how the tool 9 can be introduced into the rotating pin 4. For this purpose, it is usually not necessary to remove the flow element 3, because as in Figure 8 As can be seen in FIG. 1 , the flow element 3 preferably has passage openings 33 at suitable locations.

[0114] However, preferably, the flow element 3 can be easily removed and fastened again. For example, due to a bayonet closure. In this case, the rotation pin 4 can be exposed in a simple manner. The embossing 42 enables the rotation of the rotation pin 4 by hand without using tools.

[0115] Due to the transmission ratio, the rotary pin enables a very fine adjustment of the throttle valve 6 , in particular when a tool is used for rotation, but also when adjusting by hand without a tool.

[0116] Preferably, there is a locking of the second throttle valve element 61, ie the throttle valve disk, and the rotary pin 4. As a result, the selected rotational position of the throttle valve disk is permanently set.

[0117] Other types of adjustment of different positions of the throttle valve disk 61 are possible.

[0118] Due to the specific shape of the wing of the throttle valve 6, it is ensured that in almost every throttle position of the throttle valve 6 and in almost every radius, there are closed and open areas. At most, the maximum closed state of the throttle valve 6 and possibly also the maximum open state of the throttle valve 6 form an exception.

[0119] In this regard, maximum does not mean that all gaps between the first wing 601 or the third wing 221 are completely open or closed. The gaps only represent two possible extreme positions for the corresponding throttle valve. However, preferably, the end positions correspond to the complete closure and complete opening of the gaps between the first wing 601 or the third wing 221.

[0120] The cross-sectional area of ​​the second wing 611 of the throttle valve disc 61 preferably corresponds to the area of ​​the first wing 601 and the third wing 221. As a result, the through-opening of the throttle valve 6 formed by the corresponding spacing of the first wing 601 or the third wing 221 can be completely closed and completely opened. Fig. 9 A partially closed throttle valve 6 is shown in FIG. , which can be further closed. Fig.10 6 is shown in a fully opened throttle valve. The maximum end portion in the closing direction is not shown. In the end portion, the throttle valve 6 is completely closed.

[0121] The above-mentioned specific distribution of the open area and the closed area in the respective throttle valve setting is achieved by the curved shape of the individual wings 601 , 221 , 611 .

[0122] In addition, the second wing 611 forms a central through-opening 613 around the longitudinal center axis L. Figures 11 to 13 The central through-opening 613 is penetrated by the hook 603. However, the central through-opening is larger than the cross-section of the first coupling element 600 and the second coupling element 220. This causes the flow-through region of the throttle valve 6 to widen toward the longitudinal center axis L.

[0123] The shape of the free end of the second wing 611 is preferably shaped such that it matches the shape of the first coupling element 600 of the first throttle valve component 60 and completely closes the widened region in the end region of the throttle valve.

[0124] As in Fig. 9 As can be clearly seen in the figure, the cross-section through which the flow can pass through the partially opened throttle valve 6 forms regions separated from each other, wherein each of the regions has an L-shape. The long sides of the L-shape are curved here. The short sides of the L-shape are preferably also slightly curved. Preferably, the transition from the long side to the short side is curved. The transition preferably forms an angle greater than 90°.

[0125] The L-shape is preferred, but not absolutely necessary, for realizing the present invention.

[0126] according to Figures 14 to 16 The differences in the design of the wings 601 , 221 , 611 of the throttle valve 6 according to the invention compared to known wings can be explained.

[0127] Fig.14 A known embodiment is shown. The wing is a fan-shaped part. The cross represents the area through which flow can flow when the throttle valve is fully opened. The dashed lines show some radii. As can be easily seen, there are radii that are completely in the area through which flow flows and radii that are completely in the closed area.

[0128] Fig.15 A throttle valve with a curved wing is shown. Here, too, the cross represents the area through which flow passes, and the dashed lines represent some radii. The curved wing causes all or almost all radii to extend both in the area through which flow passes and in the area not through which flow passes, i.e., the closed area.

[0129] As per Fig.16 As shown in the graph, Fig.14 Compared with the throttle valve, Fig.15 The integrated barrier in the radius is more stable for the throttle valve. This leads to a more optimal flow distribution and prevents extremes in flow velocity.

[0130] The device according to the invention for regulating a volume flow optimizes the outflow behavior and prevents gap flows.

[0131] Reference numerals list

[0132] 10 Wall openings

[0133] 11 walls

[0134] 2 Shell

[0135] 20 first housing member

[0136] 200 Matrix

[0137] 201 First Flange

[0138] 202 First Step

[0139] 203 Second Step

[0140] 204 upper surface

[0141] 205 Grooves

[0142] 21 second housing member

[0143] 210 Matrix

[0144] 211 Second flange

[0145] 22Third throttle valve component

[0146] 220 second coupling element

[0147] 221 Third wing

[0148] 222 Scale

[0149] 3 Flow elements

[0150] 30 Shell

[0151] 31 outflow edge

[0152] 32 lower end surface

[0153] 33Through port

[0154] 34 coupling element

[0155] 35 Magnets

[0156] 4 Rotation pins

[0157] 40 pins

[0158] 41Head

[0159] 42 Embossing

[0160] 5 Cover

[0161] 50 substrates

[0162] 51 lower end surface

[0163] 52 Magnets

[0164] 6Throttle valve

[0165] 60 first throttle valve component

[0166] 600 Second coupling element

[0167] 601 first wing

[0168] 602 ridge

[0169] 603 Hook

[0170] 61 Second throttle valve component

[0171] 610 Ring

[0172] 611 Second wing

[0173] 612 gear assembly

[0174] 613 Central Through Hole

[0175] 614 Reference Department

[0176] 8 air channels

[0177] Exit 80

[0178] 9 Tools

[0179] V-Valve

[0180] L longitudinal center axis

Claims

1. A device for regulating the air volume flow, in particular in an air distribution network, wherein the device has an air channel through which flow can flow, wherein the air channel defines a longitudinal center axis (L) and a radial direction, The device comprises a throttle valve (6) arranged in the air channel, The throttle valve (6) comprises at least a first throttle valve component (60) and a second throttle valve component (61), wherein the first throttle valve component comprises a first blocking element (601) and the second throttle valve component comprises a second blocking element (611). wherein the orientation of the second blocking element (611) relative to the first blocking element (601) can be changed in order to change the size of the cross section of the air passage through which flow can flow, wherein a minimum dimension of the through-flow cross section is achieved in a first end position of the second blocking element (611) relative to the first blocking element (601), and a maximum dimension of the through-flow cross section is achieved in a second end position, It is characterized in that The first blocking element (601) and the second blocking element (611) are designed so that the first blocking element and the second blocking element form a part of the flow-through cross section in almost every radial direction in almost all positions between the first end position and the second end position, and In at least a portion of the position between the first end position and the second end position, the cross section through which flow can flow widens in the direction of the longitudinal center axis (L). 2 . The device according to claim 1 , wherein in at least a portion of the position between the first end position and the second end position, the flow-through cross section first tapers toward the longitudinal center axis (L) and then widens.

3. An apparatus according to claim 1 or 2, wherein in at least a portion of the position between the first end position and the second end position, the flow-through cross-section constitutes a plurality of L-shaped areas divided by the first blocking element and the second blocking element (601, 611).

4. The device according to any one of claims 1 to 3, wherein all positions including the first end position and the second end position are manually adjustable when the device is mounted in a wall opening (10).

5. The device according to any one of claims 1 to 4, wherein the first blocking element and the second blocking element are wing-shaped members (601, 611) that are curved in the radial direction.

6. The device according to any one of claims 1 to 5, wherein the first blocking elements (601) terminate in the region of the longitudinal center axis (L) at a common central blocking intermediate part (600).

7. The device according to any one of claims 1 to 6, wherein the second blocking element (611) forms a free end in the region of the longitudinal center axis (L).

8. An apparatus according to claims 6 and 7, wherein the free end of the second blocking element (611) is arranged around a central free area (613), the cross-section of which is larger than the cross-section of the central blocking intermediate part (600), thereby providing a free annular area which is only partially covered by the first blocking element (601).

9. The device according to any one of claims 1 to 8, wherein the first blocking element (601) forms a curved flow-impacting surface.

10. The device according to any one of claims 1 to 9, wherein the second blocking element (611) is designed to be flat.

11. An apparatus according to any one of claims 1 to 10, wherein the apparatus has a third throttle valve component (22), the third throttle valve component has a third blocking element (221), the third blocking element is arranged to overlap with the first blocking element (601), and wherein the second blocking element (611) is arranged between the first blocking element and the third blocking element (601, 221) and is movable relative to the first blocking element and the third blocking element.

12. The device according to claim 11, wherein the third blocking element (221) forms a curved outflow surface.

13. An apparatus according to any one of claims 1 to 12, wherein the first throttle valve component is designed to be rotationally fixed and if the third throttle valve element is present, the third throttle valve component (60, 22) is designed to be rotationally fixed and the second throttle valve component (61) is designed to be rotatable around the longitudinal center axis (L).

14. The device according to claim 1, wherein the device comprises a housing (2) which is designed to be received in a wall opening (10), in particular to be received in a clamped and / or sealed manner in a wall opening.

15. A device according to any one of claims 1 to 13, wherein the device has an internal flow element (3), the flow element having a housing (30), the housing being spaced apart from the first throttle valve part and the second throttle valve part (601, 611) and being spaced apart from the third throttle valve part (22) if the third throttle valve part is present, wherein the housing (30) has a circumferential portion which increases away from the throttle valve (6).

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