• 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:

    公开号:SE1100319A1
    申请号:SE1100319
    申请日:2011-04-27
    公开日:2012-10-28
    发明作者:Gert Nimblad
    申请人:Gert Nimblad；
    IPC主号:
    专利说明:

    very. If the air pressure is lowered e.g. to half against the nozzles / holes, the air flow through them to the mixing chamber decreases to a quarter according to physical laws. It is thus not possible to reduce the energy consumption of the central fan by reducing the pressure or air flow through the nozzles / holes.
    The object of the present invention is to eliminate the disadvantages of the above-mentioned constructions, by maintaining the same pressure and air flow through each open nozzle / hole, as at least one of them is closed due to reduced need for ventilation air to the space, which means that the negative pressure at each nozzle / hole will be the same, so the negative pressure in the mixing chamber at each nozzle / hole sucks in the room air: L the mixing chamber with good efficiency, while the central fan decreases in speed and saves energy.
    Thanks to the invention, the problems with the above-mentioned constructions have now been solved in a simple and inexpensive manner, without adding extra fans and many other moving parts, which can break and at the same time reduce the energy consumption. The invention relates to a ventilation unit, made of, among other things. a. thin sheet metal and plastic, which provide spaces, e.g. a number of hotel rooms, with ventilation air, in order to obtain a desired amount of air per unit of time and a desired temperature in the room. The ventilation air comes from a central fan placed outdoors and is pushed in through a number of nozzles / holes in the ventilation unit with a predetermined pressure of e.g. 80 Pa, into a mixing chamber in the ventilation unit, which there creates a negative pressure, which sucks room air from the space into the mixing chamber through a heat exchanger connected to the ventilation unit. In the mixing chamber, the room air is mixed with the ventilation air and heated or cooled with a circulating medium, e.g. water in pipes in the heat exchanger. The now mixed air is pushed further from there into the space. According to the invention, the ventilation air is forced through a desired number of open equal nozzles / holes, which are flowed through by the same amount of ventilation air per piece and per unit of time. These are arranged in a wall of the ventilation unit which separates the mixing chamber from a pressure chamber, to which the ventilation air is forced in from a ventilation pipe, extending from the central fan to supply air holes into the pressure chamber. The number of nozzles / holes, which are closed or available for the supply of ventilation air, is determined by the amount of ventilation air that is currently needed for the space. When the need is lower than the maximum, a number of nozzles / holes are closed off from being passed by the ventilation air. A smaller number than the maximum number of nozzles / holes are then open, which are passed under the same pressure in the pressure chamber, e.g. 80 Pa and the same air flow per nozzle / hole regardless of how many nozzles / holes are open.
    A pressure sensor or pressure sensor automatically senses the pressure and adjusts this to a predetermined pressure that is continuously at the same level at the nozzles / holes, so the central fan needs work correspondingly less and thus saves energy, as a smaller number of nozzles / holes are open.
    The invention is described in more detail below with the aid of some preferred embodiments, in which Fig. 1 shows a translucent view seen from above through a ventilation unit, Fig. 2 shows a vertical cross-section through a ventilation unit, Fig. 3 shows a vertical cross-section through a nozzle / hole pointing into a mixing chamber, Fig. 4 shows a vertical cross-section through a pressure chamber, seen against the wall with nozzles / holes.
    As shown in Figs. 1 and 2, a ventilation unit 1 is shown, which supplies a space 3 with ventilation air 2 from outside via a central fan 5, which is pushed in through a number of nozzles / holes 4 with a predetermined pressure in a mixing chamber 6 into a the ventilation unit 1, which there creates a negative pressure, which sucks room air 8 from the space 3 into the mixing chamber 6 through a heat exchanger 7, which is mixed with the ventilation air 2 to mixed air 28, which is pushed further into the space 3. Open nozzles / holes 4 are flowed through continuously of ventilation air 2 while others are closed. A pressure sensor 22, automatically senses the pressure and adjusts it to be continuously at the same level according to the number of open nozzles / holes 4. These are arranged in a wall 9, which separates the mixing chamber 6 from a pressure chamber 10, to which ventilation air 2 is forced in from ventilation pipes. 12 from the central fan 5 to the supply air hole 11 in the pressure chamber 10.
    The ventilation unit 1 is shaped like a box 29.
    The nozzles / holes 4 are arranged along a horizontal line 25 (Fig. 4) in the wall 9 a distance from each other and point across the wall 9 towards the mixing chamber 6.
    The inner roof 23 of the pressure chamber 10 is arranged against the roof 24 of the space 3. The heat exchanger 7 is arranged below the mixing chamber 6, in order to suck in the room air 8 through the heat exchanger 7 from the upper part of the space 3 where the room air 8 is warmest. In a preferred embodiment of the invention, the pressure chamber 10 is divided by a partition wall 21 into two smaller pressure chambers 14, each with a pressure sensor 22, each with its own supply air hole 11, where the ventilation air 2 is forced in through each ventilation pipe 12, each having a damper 13, for to open or close the flow of ventilation air 2. The nozzles / holes 4 with closed damper 13 are then not flowed through.
    The nozzles / holes 4 with open damper 13 are passed through. In another variant of the invention, the box 29 is approximately 1000x1000x200 mm. The wall 9 is then straight and has 5 nozzles / holes 4. The two smaller pressure chambers 14 have a width in the flow direction 17 of the ventilation air 2 of approx. 170 mm. One smaller pressure chamber 14 has 2 nozzles / holes 4 and the other 3 nozzles / holes 4. With the help of the dampers 13, it is possible to select 2, 3 or 5 open nozzles / holes 4. Of course, the invention can also is applied if the nozzles / holes 4, can be fully opened and closed, by means of manoeuvrable elements, such as e.g. a hatch, in order, if desired, via a controllable control unit outside the space 3, to control the element manually to be open or closed, or the elements can be controlled by an electric motor, which is operated electrically by contact controls.
    As can be seen from Fig. 3, the nozzles / holes 4 are formed as a hollow cone 16 without a tip, the length of which is about 20 mm, the circumferential surface of which has a thickness of about 0.5-2 mm, which has a round opening at each end. through which the ventilation air 2 flows in a flow direction 17.
    The cone 16 has a narrower round opening 18 of about 25 mmzs diameter, which faces 511 in the mixing chamber 6, and a wider round opening 19 of about 30 mmzs diameter, through which the ventilation air 2 flows in, which is tightly connected in an equally large hole in the wall 9.
    The negative pressure is established at the narrower diameter 18, where the ventilation air 2 increases its flow rate and diverges into the mixing chamber 6 by about 10-30 degrees spread around the center line 15 of the cone 16, which is angled about 90 degrees to the wall 9, which is angled 90 degrees to the ceiling 23. The air flow through each cone 16 is about 4 liters / sec. The cone 16 has a rounded radius 20 on its inside, at its connection to the wall 9, to facilitate the air flow through the cone 16 into the mixing chamber 6, where it flows further out through at least one opening 30, which is formed as a grid, which provides a small air resistance, arranged in the front end 31 of the box 29, pointing into the space 3 in a direction parallel to the roof 24, in order to obtain an evenly distributed pressure against the entire opening 30, which silences the outflow of the mixed air 28 through the opening 30.
    As shown in Fig. 4, the partition wall 21 divides the pressure chamber 10 by delimiting every other nozzle / hole 4 to a first smaller pressure chamber 26, which faces upwards towards the ceiling 23 and every second nozzle / hole 4 is delimited downwards. against 'space 3 to a second. smaller pressure chamber 27, whereby when the damper 13 is closed, every other nozzle / hole 4 closes, which ventilation air 2 is then distributed evenly over the entire mixing chamber 6.
    权利要求:
    Claims (10)
    [1]
    Claim device for a ventilation unit (1), which provides a space (3), e.g. a hotel room. with ventilation air (2), from outside via at least one central fan (5), which pushes the ventilation air (2) through a number of nozzles / holes (4) in the ventilation unit (1), into at least one mixing chamber (6) in the ventilation unit (5) 1), which there creates a negative pressure, which sucks room air (8) from the space (3) into the mixing chamber (6) through a heat exchanger (7), which room air (8) is mixed with the ventilation air (2) and heated or cooled by a medium in the heat exchanger (7), which mixed air (28) is pushed further from there into the space (3), characterized in that at least one of all the nozzles / holes (4) of the ventilation air (2) is flowed through as required for ventilation air (2). under a predetermined pressure and that the others are closed, which pressure is automatically sensed by means of at least one pressure sensor (22), which adjusts the pressure to be substantially the same regardless of how many nozzles / holes (4) are closed / open, which saves energy to drive the central fan (5).
    [2]
    Device according to claim 1, characterized in that the nozzles / holes (4) are flowed through by substantially the same air flow per second at substantially the same pressure and are arranged in a wall (9), which separates the mixing chamber (6) from at least one pressure chamber ( 10), to which the ventilation air (2) is forced in from at least one ventilation pipe (12) from the central fan (5) to at least one supply air hole (11) into the pressure chamber (10).
    [3]
    Device according to claim 2, characterized in that the ventilation unit (1) is a box (29) and that the nozzles / holes (4) are arranged along a substantially horizontal line (25), arranged a distance from each other and that they point inwards against the mixing chamber (6) across the wall (9), which ceiling of the pressure chamber (23) is arranged substantially against the ceiling of the space (24) and that the heat exchanger (7) is arranged below the mixing chamber (6).
    [4]
    Device according to claim 2, characterized in that the nozzles / holes (4) are substantially as large and shaped as a hollow cone (16) without a tip, which has an opening at each end through which the ventilation air (2) flows in a flow direction. (17) across the wall (9), which cone (16) has a narrower round opening (18), which faces the mixing chamber (6) and a wider round opening (19), which is arranged in an at least equal size round holes in the wall (9), such as the wider round opening (19), the negative pressure being established at the narrower diameter (18), which ventilation air (2) diverges into the mixing chamber (6) around the center line (15) of the cone (16), which extends across the wall (9). .
    [5]
    Device according to claim 2, characterized in that the pressure chamber (10) is divided by at least one additional partition wall (21). at least two smaller 8..
    [6]
    6. Device pressure chamber (14), (22), its supply air hole each having its own pressure sensor which was for (11), each having (2) (12) from (12) where the ventilation air is forced in through each ventilation pipe (5) . a central fan which ventilation pipe has at least a damper (13), for opening or closing the flow of the ventilation air (2) which nozzles / holes to at least one of the smaller pressure chambers (4) (13), which (14), with closed damper nozzles / hole (4) with the ventilation air when not flowing through, with (13) open damper (2) (14) nozzles / holes (4). is further flowed through to the smaller pressure chamber according to claim 2, characterized (4) preferably by at least two nozzles / holes being fully openable and closable, by means of after (3) to control this manually operable element, e.g. . a doors, if desired, via controls operable outside the space, to be open or closed or that the operable elements are controlled by an electric motor, which is electrically operated with contact controls. .
    [7]
    Device according to claim 4, characterized in that the cones (16) at their wider diameter have a rounded radius (20) on its inside, at its connection to the wall (9).
    [8]
    Device according to claims 3 and 5, characterized in that the partition wall (21) divides the pressure chamber (10) by delimiting every second nozzle / hole (4) to a first smaller pressure chamber 10 (26) upwards towards the ceiling (23) and every other nozzle / hole (4) is delimited downwards towards the space (3) to a second smaller pressure chamber (27), whereby when closing at least one damper (13), every other nozzle / hole (4) is closed.
    [9]
    Device according to claim 4, characterized in that the mixed air (28) in the mixing chamber (6) flows out through at least one opening (30), preferably a grid, in the front end (31) of the box (29), pointing into the space ( 3).
    [10]
    Device according to claims 3 and 5, characterized in that the ventilation unit (1) has a size of the box (29), which wall (9) is substantially straight and has 5 nozzles / holes (4), which two smaller pressure chambers (14) have one 2 and the other 3 nozzles / holes (4), whereby with at least one damper 13 help, it is possible to select 2, 3 or 5 open nozzles / holes 4.
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    同族专利:
    公开号 | 公开日
    SE535935C2|2013-02-26|
    WO2012148339A1|2012-11-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3186327A|1963-02-28|1965-06-01|Worthington Corp|Induction unit for air conditioning systems|
    DE19921463A1|1999-03-11|2000-09-14|Adam Bernhardt|Process for tempering a hall and device for carrying out the process|
    US6213867B1|2000-01-12|2001-04-10|Air Handling Engineering Ltd.|Venturi type air distribution system|
    FI122286B|2006-01-16|2011-11-15|Halton Oy|Supply air device and method for controlling the amount of air flow|
    FI122289B|2008-07-24|2011-11-15|Halton Oy|The air exchange system and the method of air exchange|
    NL2002015C|2008-09-24|2010-03-25|Inteco B V|CROSS FLOW INDUCTION CEILING CONVECTOR.|
    法律状态:
    2021-11-30| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1100319A|SE535935C2|2011-04-27|2011-04-27|Device at a ventilation unit|SE1100319A| SE535935C2|2011-04-27|2011-04-27|Device at a ventilation unit|
    PCT/SE2012/000058| WO2012148339A1|2011-04-27|2012-04-26|Improvements in or relating to a ventilation unit|
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