• 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:
    SUMMARY The present invention relates to a ventilation device (1) comprising a first air duct (2) for supplying air and a second air duct (3) for supplying air. The first air duct (2) comprises a first outlet (4) for air flow and the second air duct (3) comprises a second outlet (5) for air flow, where the first outlet (4) is arranged to allow passage for a predefined amount of air per unit time (F1) . The second outlet (5) comprises a controllable damper device (6) which is arranged to assume a first position which allows passage of a predefined amount of air per (Fa) The ventilation device (1) comprises a control unit (7) and at least one detector (8, time unit or a second position which does not allow air passage 9), where the control unit (7) is arranged to control the controllable damper device (6) independently of the input data from said detector (8, 9) so that a demand-controlled ventilation is obtained. The present invention also relates to a corresponding method. (Fig. 1)
    公开号:SE1251036A1
    申请号:SE1251036
    申请日:2012-09-17
    公开日:2014-03-18
    发明作者:Per-Åke Larsson；Tomas Söderberg
    申请人:Swegon Ab；
    IPC主号:
    专利说明:

    10PROBLEM SOLVINGThe object of the present invention is to provide a demand-drivenventilation device which is of a less complicated kind than those used hitherto.
    Said object is achieved by means of a ventilation device comprising afirst air duct for supplying air and a second air duct for supplying air. Thethe first air duct comprises a first outlet for air flow and the second air ductincludes a second airflow outlet. The first outlet is arranged to allowpassage for a predefined amount of air per unit time. The second outlet includesa controllable damper device which is arranged to either assume a first position whichallows passage for a predefined amount of air per unit of time or a second position such asdoes not allow air passage. The ventilation device comprises a control unit andat least one detector, where the control unit is arranged to control the controllablethe damper device in dependence on input data from said detector so that a demand-controlledventilation is obtained.
    The said object is also achieved by means of a method for controlling the supply of airvia a first airflow outlet and a second airflow outlet, where the firstthe outlet allows passage for a predefined amount of air per unit time.
    The method comprises the steps of: detecting at least one parameter in a space,wherein said parameter is related to the air quality in the space; and control of adamper device of the second outlet depending on said detection so thatthe damper device either assumes a first position which allows passage for onepredefined air volume per unit time, or a second mode that does not allowair passage, so that a demand-controlled ventilation is obtained.
    According to one example, each detector is arranged to detect at least some oftemperature, humidity, carbon dioxide content, movements and presence.
    According to another example, the control unit is arranged to control the damper device toswitch between the first mode and the second mode with a periodicity so that the firstthe mode is occupied during a first time period and the second mode is occupied during onesecond time period, whereby a pulsating air flow is obtained at the second outlet.
    Other examples appear from the dependent claims.
    A number of advantages are achieved by means of the present invention, for example:- The ventilation device is better optimized for the flow, which among other things refers tobetter controlled entrainment of recirculated air as well as reduction oravoidance of noise or noise at certain flow rates.
    - Get moving parts.
    - Uncomplicated software control with simple adjustment options.- Increased service life.
    - Energy efficient.
    LIST OF FIGURESThe present invention will now be described in more detail with reference to thoseattached figures, where:Figure 1Figure 2Figure 3Figure4Figure 5Figure 6Figure 7Figure 8shows a schematic overview view of a ventilation device;shows a first graph of airflow over time;shows a second graph of airflow over time;shows a third graph of airflow over time;shows a fourth graph of air flow over time;shows a fifth graph of airflow over time;shows a sixth graph of air fl fate over time; andshows a flow chart of a method according to the present invention.
    DETAILED DESCRIPTIONFigure 1 shows a ventilation device 1 which comprises a fan arrangement 15arranged to move fresh air, from an inlet 10 to a main duct 11, andfurther from the main duct 11 to a first air duct 2 and a second air duct 3 via abranch 12. The first air duct 2 comprises a first outlet 4 for air flow andthe second air duct 3 comprises a second outlet 5 for air flow, where each outlet 4, 5comprises a number of outlet apertures 13, 14.
    Referring also to Figure 2, which shows a first graph 16 for air flow over time, isthe first outlet 4 arranged to allow passage for a predefined amount of air perunit of time F1.
    According todamper device 6 which is arranged to either assume a first position which allowsthe present invention comprises the second outlet 5 a steerablepassage for a predefined amount of air per unit time Fg or a second mode which does notallows air passage, where the first graph 16 shows a position where the damper deviceentered the second mode.
    The ventilation device 1 comprises a control unit 7, a first detector 8 and asecond detector 9, where the control unit 7 is arranged to control the controllablethe damper device 6 in dependence on the input data from these detectors 8, 9 so that ademand-controlled ventilation is obtained. Each detector 8, 9 is arranged to e.g.detect at least some of temperature, humidity, movements, presence as wellair quality, such as carbon dioxide content. In this case, the detectors are of an adapted type, for examplea detector can be arranged to detect movements and / or presence in a known mannerinclude an infrared radiation sensor. It is also conceivable that you can usemore sophisticated detectors, such as camera arrangements arranged todetect the number of people in a room. At least indirectly, all detected parametersrelated to air quality, then for example elevated temperature, elevated humidity,movements and presence indicate the presence of one or more people, which is directrelated to air quality.
    For example, when the detectors 8, 9 detect that a room is empty, and that no extraventilation is needed for reasons other than the presence of persons such as, for example, elevatedhumidity or temperature, the damper device 6 is controlled to assume the second position, whichis illustrated in Figure 2. In this case, a basic ventilation is obtained which is desirable forobtain a certain indoor climate.
    Referring to Figure 1 and Figure 3, Figure 2 shows a second graph 17 for air flowover time, when the detectors 8, 9 detect that people have entered a room. This canfor example by detecting movements and / or presence, and / or alsoindirectly, for example, by detecting elevated levels of carbon dioxide, which in turnindicates deterioration of air quality. Then the damper device 6 is controlled by the control unit 7 thatswitch between the first mode and the second mode with a periodicity TG so thatthe first mode is occupied during a first time period T1A and the second mode is occupiedduring a second time period T2A whereby a pulsating air flow is obtained at the secondthe expiration 5. The period time TG of this periodicity corresponds to the sum of the firstthe time period T1A and the second time period TZA, i.e. TG = TiA + TZA. The totalthe maximum flow per unit time FZ is obtained when the second mode is occupied and corresponds tothe sum of the flows F1, F3 via the outlets 4, 5.
    According to a first example, also referring to Figure 4 which shows a third graph 18for air flow over time, if the detectors 8, 9 detect that more supply air is needed, toexample due to more people being detected in the room and / or thatIf the carbon dioxide content has increased, the damper device 6 is controlled by the control unit 7 so that the firstthe time period T1A is constant while the second time period, is reduced from a firstvalue T2A to a second value T2B, whereby the period time of the periodicity is reduced froma first period time value TG to a second period time value Tß. In this way, time is increasedduring which the damper device 6 is controlled to assume the first position, whereby an increased flowof air is obtained.
    Generally, in this example, the first position is held during constant time periods T1Aand the second mode during controllably variable time periods T2A, TZB, so that one controllablevariable periodicity TG, Tß for the first mode is obtained. In this way only changesthe time interval T2A, T2B when the second position is occupied, i.e. when no air passageallowed at the second outlet 5, but no other parameters.
    According to a second example, with reference to Figure 1, Figure 3 and Figure 5, where Figure 5shows a fourth graph 19 for air flow over time if the detectors 8, 9 detect that moreIf necessary, the control unit 7 is instead arranged to control the damper device 6 so thatthe first time period is increased from a first value T1A to a second value T1C whilethe second time period is reduced correspondingly from a first value T2A to a secondvalue Tgc. In this way, the time during which the damper device 6 is controlled to be increased is increasedthe first position, whereby an increased flow of air is obtained.
    Generally, the first position is held during controllably variable time periods T1A, T1C witha constant periodicity TG.
    According to a third example, also referring to Figure 6 which shows a fifth graph 20for Airflow over time, both the first time period has changed from a first value T1Ato a second value T1C and the second time period changed from a first value T2A toa second value Tgc. In this case, the period of the periodicity has also changed from a firstvalue TC, to a second value TÅ.
    According to the third example, the first time period can either be increased or decreased,and the second time period can also either be increased or decreased, regardless ofeach other.
    All kinds of changes in pulse widths or pulse lengths in all conceivable combinationsmay occur according to the present invention. Of course, in the presentcase the damper device 6 is controlled to assume the first position for a longer time, whichindicated in Figure 7, which shows a sixth graph 21 for Airflow over time.
    Suitably the periods are controlled so that excessive or short intervals are avoided,for example, the device may be controlled so that intervals shorter than 1 minute or longerthan 10 minutes is avoided except in cases where the control gives the signal that it should becompletely open or completely closed.
    Referring to Figure 8, the present invention also relates to a method of controlsupply of air via a first outlet 4 for air flow and a second outlet 5 for air flow,where the first outlet 4 allows passage for a predefined amount of air per unit timeF1.
    The method includes the steps:23: detecting at least one parameter in a space, where saidparameter is related to the air quality in the space; and24: control of a splicing device 6 of the second outlet 5 depending onsaid detection so that the damper device 6 either assumes a first position whichallows passage of a predefined amount of air per unit of time F3, or a second positionwhich does not allow air passage. In this way, a demand-controlled ventilation is obtained.
    The present invention is not limited to the above, but may vary freelywithin the scope of the appended claims. For example, the first outlet formsand the second outlet a pair of outlets 22, and it is conceivable that the main channelincludes more branches leading to additional outlet pairs of the same type.
    Such outlet pairs may be in the same room or different rooms, and in the latter case areit is desirable to have detectors in all current rooms. A number of outlet pairs can also beintegrated as one and the same supply air device, for example in the form of a so-calledcooling baffle.
    The number of detectors in each room, and their different types and functions may vary, howeveraccording to the present invention there should be at least one detector.
    Fan arrangements, air ducts and dampers are of a well-known type, and are not describedfurther here.
    When it is stated that no air passage is allowed, this shall be interpreted within what ispractically possible in the present art; some leakage may therefore occur.
    Furthermore, the air flows are graphically reproduced with sharp boundaries; in practice one happenssmoother transition between different positions where the different air flows can vary slightly overtime due to leakage, wear, clogging of filters and other sources of error. The graphicsthereforepresent invention, and not as exact representations of reality.the representations shall be considered as schematic descriptions ofIn a ventilation device of this type, a constant pressure is sought inthe air ducts. By then also having knowledge of the properties of the outlets 4,with associated outlet apertures 13, 14, one can obtain information about whichcurrent flow that passes the outlets 4, 5. By properties is meant here a so-called k-factor which together with the duct pressure gives the passed flow Q in liters per second according tofomeln:omm / Ewhere dP is the pressure difference between duct and environment.
    By varying the duct pressure, a software-like compensation of the flow can thus take placeby changing the length of the periods. Through this knowledge of the outletsproperties and current duct pressure, can flow measurement with special sensorsavoided.
    The control unit 7 is arranged to control the controllable damper device 6 depending oninput data from said detector 8, 9, and it is also conceivable that time control canapplied as a complement. For example, knowledge that a room shouldbe used at a certain time be used to increase ventilation a certain time beforethis casepresence detection, so the unit that regulates the time control can be seen as onethis time. In time management works as a kind of indirectkind of detector within the scope of the present invention. Detected parameter is inthis case time.
    权利要求:
    Claims (10)
    [1]
    A ventilation device (1) comprising a first air duct (2) for supplying air and a second air duct (3) for supplying air, wherein the first air duct (2) comprises a first outlet (4) for air flow and the second air duct ( 3) comprises a second outlet (5) for air flow, where the first outlet (4) is arranged to allow passage for a predefined amount of air per unit time (F1), characterized in that the second outlet (5) comprises a controllable damper device (6) which is arranged to either occupy a first position which allows passage of a predefined amount of air per unit time (F3) or a second position which does not allow air passage, wherein the ventilation device (1) comprises a control unit (7) and at least one detector (8, 9) , where the control unit (7) is arranged to control the controllable damper device (6) in dependence on input data from said detector (8, 9) so that a demand-controlled ventilation is obtained.
    [2]
    Ventilation device according to claim 1, characterized in that each detector (8, 9) is arranged to detect at least some of temperature, humidity, carbon dioxide content, movements and presence.
    [3]
    Ventilation device according to one of Claims 1 or 2, characterized in that the control unit (7) is arranged to control the damper device (6) to switch between the first position and the second position with a periodicity (TG, TB, TÅ) so that the first the position is occupied during a first time period (T1A, T1C) and the second position is occupied during a second time period (TgA, T2B, Tgc, TZD), whereby a pulsating air flow is obtained at the second outlet (5).
    [4]
    Ventilation device according to claim 3, characterized in that the control unit (7) is arranged to control the damper device (6) so that the first time period (T1A) is constant while the second time period (T2A, TZB) is controllably variable, so that the first position held during constant time periods (TiA) with a controllable variable periodicity (TG, Tß).
    [5]
    Ventilation device according to claim 3, characterized in that the control unit (7) is arranged to control the damper device (6) so that the first time period (T1A, T1C) is controllably variable, so that the first position is held under controllable variabia time periods (TiA, Tic) with a constant periodicity (Ta).
    [6]
    Method for controlling the supply of air via a first outlet (4) for air flow and a second outlet (5) for air flow, wherein the first outlet (4) allows passage for a predefined amount of air per unit time (Fi), characterized in that the method comprises the steps of: (23) detecting at least one parameter in a space, said parameter being related to the air quality in the space; and (24) controlling a damper device (6) of the second outlet (5) in dependence on said detection so that the damper device (6) either assumes a first position which allows passage of a predefined amount of air per unit time (P3), or a second position that does not allow air passage, so that a demand-controlled ventilation is obtained.
    [7]
    Method according to claim 6, characterized in that said detection relates to at least some of temperature, humidity, carbon dioxide content, movements and presence.
    [8]
    Method according to one of Claims 6 or 7, characterized in that the control of the damper device (6) results in a shift between the first position and the second position with a periodicity (TG, Tß, TÅ), so that the first position is occupied. during a first time period (TiA, T1C) and the second position is occupied during a second time period (TQA, TZB, TZC, TZD), whereby a pulsating air flow is obtained at the second outlet (5).
    [9]
    Method according to one of Claims 6 to 8, characterized in that the control of the damper device (6) results in the first time period (TiA) being constant while the second time period (T2A, T2B) is controllably variable, so that the first position is held during constant time periods (T1A) with a controllable variable periodicity (TG, Tß).
    [10]
    Method according to one of Claims 6 to 8, characterized in that the control of the damper device (6) results in the first time period (T1A, T1C) 11 being controllably variable, so that the first position is held for controllably variable time periods (T1A, T1C). ) with a constant periodicity (TG).
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    同族专利:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251036A|SE537032C2|2012-09-17|2012-09-17|Ventilation device comprising a first outlet and a second outlet|SE1251036A| SE537032C2|2012-09-17|2012-09-17|Ventilation device comprising a first outlet and a second outlet|
    US14/427,945| US20150226449A1|2012-09-17|2013-09-17|Ventilation device comprising a first outlet and a second outlet|
    PCT/SE2013/051085| WO2014042588A1|2012-09-17|2013-09-17|Ventilation device comprising a first outlet and a second outlet|
    EP13836491.4A| EP2909540B1|2012-09-17|2013-09-17|Ventilation device comprising a first outlet and a second outlet|
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