Abstract:
The invention relates to a flat element ( 1 ) for thermally adjusting indoor air, especially for cooling indoor air. Said flat element ( 1 ) comprises an air guiding chamber ( 2 ) and an active cover surface ( 3 ) having microholes ( 4 ). The air guiding chamber ( 2 ) has an upper side ( 5 ), a plurality of sidewalls ( 6 a,  6 b), at least one opening ( 7 ) for letting air in and at least one opening ( 8 ) for discharging air. The active cover surface ( 3 ) closes the air guiding chamber ( 2 ) towards its open bottom side. The upper side ( 5 ) of the air guiding chamber ( 2 ) is shaped so as to have at least one baffle ( 10 ) having at least one air guiding edge ( 11 ).

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention is directed to a flat element for thermal adjustment of indoor air and to a device for thermal adjustment of indoor air. 
       BACKGROUND OF THE INVENTION 
       [0002]    The thermal adjustment of indoor air may be realized by means of air convection. Thereby exist the most various elements for the outlet of air, for example twist outlets that are mounted on a ceiling. 
         [0003]    A further alternative for the thermal adjustment of indoor air consists in the utilization of ceiling areas that are cooled with water. Due to the possibility of the condensation of water vapor on these with water cooled surfaces an aeration by means of windows aeration is excluded. This means that such with water cooled surfaces must be combined with a separate, central fresh air supply. 
         [0004]    A further alternative for the thermal adjustment of indoor air comprises the thermal area adjustment by means of concrete core cooling. This kind of thermal adjustment of indoor air is very slow. 
         [0005]    In EP 1 078 205 B1 are described air-cooling elements that have micro-holes in the cooling wall. These micro-holes have a diameter of not more than 0.8 mm. The free cross-section in this cooling wall is not more than 2%, referred to the total area of the cooling wall. 
         [0006]    For the generation of turbulences in the fresh air must be present an antechamber. Such antechambers have economical and technical drawbacks. A technical drawback consists therein that into the antechamber must be mounted outlet ports or holes through which the fresh air must be blown onto the cooling wall. 
         [0007]    This in turn means that directed air streams are generated. Thereby result cooling areas with different activities. 
         [0008]    These air-cooling elements comprise a lot and constructive complex single components and are thus correspondingly expensive. 
       SUMMARY OF THE INVENTION 
       [0009]    It is an object of the present invention to provide a flat element for thermal adjustment of indoor air, especially for cooling of indoor air, for example in the form of a ceiling element or in the form of a wall element. 
         [0010]    With this flat element the fresh air shall be brought into a room spread over a relative capacious area in a comfortable and pleasant, especially draft-free, dynamic adaptable and essentially noiseless way. 
         [0011]    This flat element shall be operated only by one single medium, namely air. 
         [0012]    With this flat element shall be made possible simultaneously a uniform thermal adjustment of the area (use of the thermal radiation) and a supply of the room with the necessary amount of fresh air (use of the thermal convection). 
         [0013]    With this flat element it shall be possible to produce an essentially laminar displacement air stream. 
         [0014]    With this flat element the discharge effect of the preferably ionized supply air shall be minimized, that is, that this flat element shall not comprise parts that enhance the discharge effect excessively. 
         [0015]    With this flat element the preferably ionized supply air shall act optimally in the room to be thermally adjusted. 
         [0016]    It is a further object of the present invention to provide a flat element for thermal adjustment of indoor air, especially for cooling of indoor air, for example in the-form of a ceiling element or in the form of a wall element, with which in special rooms with a highly required clean room characteristic particles may be pushed away from the technological caused active area. 
         [0017]    It is a further object of the present invention to provide such a flat element with which the formation of a condensate of water vapor at the essential surfaces of this flat element may be avoided. 
         [0018]    It is a further object of the present invention to provide such a flat element with which a high heat transport in the room to be thermally adjusted is possible. 
         [0019]    This flat element shall comprise preferably only a few and constructive simple single parts. 
         [0020]    This flat element shall require preferably only a small installation height in order that the effective height of the room may be used optimally. 
         [0021]    With the present invention these objects are attained. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0022]      FIG. 1  shows purely schematically transverse from the top toward a possible upper surface  5  of an air conduct chamber  2 . 
           [0023]      FIG. 2  shows a side view of the upper surface  5  of the air conduct chamber  2  as shown in  FIG. 3  shows a top view on the upper surface  5  of the air conduct chamber  2  as shown in  FIG. 1 . 
           [0024]      FIG. 4  shows purely schematically the unrolling of the upper surface  5  of the air conduct chamber  2  made of one piece, as shown in  FIG. 1 . In this Figure the interrupted lines mean edges downwards, and the drawn through lines mean edges upwards. 
           [0025]      FIG. 5  shows purely schematically the unrolling of the active ceiling area  3  with micro-holes  4  made of one piece. In this Figure the interrupted lines mean edges downwards. The micro-holes  4  are shown only suggestively in all four corners. 
           [0026]      FIG. 6  shows purely schematically a perspective view of the inner side of the active ceiling area  3  which unrolling is shown in  FIG. 5 . 
           [0027]      FIG. 7   a  shows purely schematically transverse from the top toward a possible side wall  6   b  for an air conduct chamber  2 . 
           [0028]      FIG. 7   b  shows purely schematically transverse from the top toward a possible side wall  6   b  with cut-outs for an air conduct chamber  2 . 
           [0029]      FIG. 8  shows purely schematically transverse from the top toward a possible air conduct chamber  2  with mounted side walls  6   b  and connecting pieces  9  in the form of pipes. 
           [0030]      FIG. 9  shows a side view of the air conduct chamber  2  as shown in  FIG. 8 . 
           [0031]      FIG. 10  shows a top view on the air conduct chamber  2  as shown in  FIG. 8 . 
           [0032]      FIGS. 11   a  to  11   d  show various views of a suitable bracket  30  for the hanging of an air conduct chamber  2 . 
           [0033]      FIG. 12  shows the cross section through a suitable ceiling grid profile  25  to which are mounted a bracket  30 , an air conduct chamber  2  and an active ceiling area  3 . 
           [0034]      FIG. 13  shows a top view on a possible device for thermal adjustment of indoor air. This device comprises two columns of each three flat elements  1   a ,  1   b ,  1   c.    
           [0035]      FIG. 14  shows a side view of the device for thermal adjustment of indoor air as shown in  FIG. 13 . 
           [0036]      FIG. 15  shows in a non limiting manner cross sections and alignments through possible forms of baffles  10 . 
           [0037]      FIG. 16  shows purely schematically a possible scheme according to which, based on the actual situation, an ionization of the supply air may be guaranteed. 
           [0038]      FIG. 17  shows purely schematically a possible manner of an alignment of a separately hung up foil  26  and of a light source  28 . 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0039]    The inventive flat element  1 —also named room element—for thermal adjustment of indoor air, especially for cooling of indoor air, for example in the form of a ceiling element or in the form of a wall element, whereby the form of a ceiling element is preferred, 
         [0040]    is characterized in that 
         [0041]    it comprises an air conduct chamber  2  and an active ceiling area  3  with micro-holes  4 , whereby
       the air conduct chamber  2  has   an upper surface  5 ,   several side walls  6   a ,  6   b,      at least one opening  7  for the inlet of air,   at least one opening  8  for the outlet of air, whereby into each opening for the inlet of for the outlet of  7  for the inlet of air and into each opening  8  for the outlet of air is inserted a connecting piece  9  in the form of a pipe and is essentially hermetically sealed, and   whereby the air conduct chamber  2  is open on its bottom side, air,   the active ceiling area  3  terminates the air conduct chamber  2  on its open bottom side,   the air conduct chamber  2  and the active ceiling area  3  are essentially hermetically sealed with each other,   upper surface  5  of the air conduct chamber  2  is formed in such a way that it has at least one baffle  10  with at least one air conduct angle  11 , whereby   this (these) baffle(s)  10  point(s) to the side of the active ceiling area  3 , which is aligned to the inside of the flat element  1 ,   this (these) baffle(s)  10  generate(s) turbulences in an supplied air stream, and   this (these) baffle(s)  10  is (are) arranged crosswise to the connecting line between the opening(s)  7  for the inlet of air and the opening(s)  8  for the outlet of air, and   the opening(s)  7  for the inlet of air and the opening(s) S for the outlet of air are arranged in opposite side walls  6 a.       
 
         [0055]    The inventive device for thermal adjustment of indoor air, especially for cooling of indoor air, is characterized in that it comprises at least one column of inventive flat elements  1   a , 1   b , 1   c , that are essentially hermetically sealed with each other. 
         [0056]    Preferred embodiments of this invention are defined in the dependent claims. 
         [0057]    In the following part are described possible embodiments of the present invention. 
         [0058]    Thereby is made also reference to the figures. 
         [0059]      FIG. 1  shows purely schematically transverse from the top toward a possible upper surface  5  of an air conduct chamber  2 . 
         [0060]      FIG. 2  shows a side view of the upper surface  5  of the air conduct chamber  2  as shown in  FIG. 3  shows a top view on the upper surface  5  of the air conduct chamber  2  as shown in  FIG. 1 . 
         [0061]      FIG. 4  shows purely schematically the unrolling of the upper surface  5  of the air conduct chamber  2  made of one piece, as shown in  FIG. 1 . In this Figure the interrupted lines mean edges downwards, and the drawn through lines mean edges upwards. 
         [0062]      FIG. 5  shows purely schematically the unrolling of the active ceiling area  3  with micro-holes  4  made of one piece. In this Figure the interrupted lines mean edges downwards. The micro-holes  4  are shown only suggestively in all four corners. 
         [0063]      FIG. 6  shows purely schematically a perspective view of the inner side of the active ceiling area  3  which unrolling is shown in  FIG. 5 . 
         [0064]      FIG. 7   a  shows purely schematically transverse from the top toward a possible side wall  6   b  for an air conduct chamber  2 . 
         [0065]      FIG. 7   b  shows purely schematically transverse from the top toward a possible side wall  6   b  with cut-outs for an air conduct chamber  2 . 
         [0066]      FIG. 8  shows purely schematically transverse from the top toward a possible air conduct chamber  2  with mounted side walls  6   b  and connecting pieces  9  in the form of pipes. 
         [0067]      FIG. 9  shows a side view of the air conduct chamber  2  as shown in  FIG. 8 . 
         [0068]      FIG. 10  shows a top view on the air conduct chamber  2  as shown in  FIG. 8 . 
         [0069]      FIGS. 11   a  to  11   d  show various views of a suitable bracket  30  for the hanging of an air conduct chamber  2 . 
         [0070]      FIG. 12  shows the cross section through a suitable ceiling grid profile  25  to which are mounted a bracket  30 , an air conduct chamber  2  and an active ceiling area  3 . 
         [0071]      FIG. 13  shows a top view on a possible device for thermal adjustment of indoor air. This device comprises two columns of each three flat elements  1   a ,  1   b ,  1   c.    
         [0072]      FIG. 14  shows a side view of the device for thermal adjustment of indoor air as shown in  FIG. 13 . 
         [0073]      FIG. 15  shows in a non limiting manner cross sections and alignments through possible forms of baffles  10 . 
         [0074]      FIG. 16  shows purely schematically a possible scheme according to which, based on the actual situation, an ionization of the supply air may be guaranteed. 
         [0075]      FIG. 17  shows purely schematically a possible manner of an alignment of a separately hung up foil  26  and of a light source  28 . 
         [0076]    An air conduct chamber  2  was prepared as follows: 
         [0077]    For the preparation of the upper surface  5  of an air conduct chamber  2  was used a 0.75 mm thick electrolytically zinc-plated steel plate that had a length of 960 mm and a width of 577 mm. 
         [0078]    In both front sides  6   a  was punched an opening  7  for the inlet of air and an opening  8  for the outlet of air. Both openings  7 ,  8  had a diameter of 83 mm. 
         [0079]    On both longitudinal sides were mounted holes  20  that served for the fixation of the side walls  6   b.    
         [0080]    On both longitudinal sides and on both front sides  6   a  were mounted free press cuts  19  and edges  18  with an angle of 9 Q0 downwards. 
         [0081]    In a distance of 118 mm, 301 mm and 480 mm from the front side  6   a  with the opening  8  for the outlet of air and in a distance of 118 mm and 301 mm from the front side  6   a  with the opening  7  for the inlet of air were mounted at the respective locations edges with the angles α,  62  , γ and δ in an alternative way upwards and downwards. 
         [0082]    The angle α had a value of 103°, and the angle t 3  had a value of 102°. The angles γ and  5  had the same size and had each a value of 52°. 
         [0083]    The so prepared upper surface  5  of the air conduct chamber  2  had two baffles  10  with each a triangular cross section. The height h of these two baffles  10  was 113 mm. 
         [0084]    The length of the upper surface  5  of this air conduct chamber  2  was 590 mm, and the width of the upper surface  5  of this air conduct chamber  2  was 560 mm. 
         [0085]    There were prepared two side walls  6   b  from al mm thick electrolytically zinc-plated steel plate. These side walls  6   b  had a length of 590 mm and a height of 112 mm and were edged along one longitudinal side for 10 mm for an angle of 90°. This edge served as a stopper for a bracket  30 . 
         [0086]    These side walls  6   b  had holes  21  that were adjusted to the holes  20  in the longitudinal side of the upper surface  5  of the air conduct chamber  2 . 
         [0087]    Both side walls  6   b  were connected with the upper surface  5  of the air conduct chamber  2  by means of rivets (“Popnieten”) in an essentially hermetically way. 
         [0088]    These side walls  6   b  serve also for the stabilization of the upper surface  5  of the air conduct chamber  2 . 
         [0089]    In the opening  7  for the inlet of air and in the opening  8  for the outlet of air was inserted each a connecting piece  9  in the form of a pipe. 
         [0090]    Such a connecting piece  9  in the form of a pipe had an outer diameter of 83 mm and an inner diameter of 80 mm, a height of 28 mm and was on one side in a length of about 5 mm bended outwards in an angle of 30° so that was formed an outer angle of 150°. 
         [0091]    Both connecting pieces  9  in the form of pipes were each welded on at four points and were sealed in a circulating manner with silicone, so that an essentially hermetically bond was formed. 
         [0092]    It would also be possible to prepare an air conduct chamber  2  with an injection moulding process or with a cupping process. 
         [0093]    An active ceiling area  3  with micro-holes  4  was prepared as follows: 
         [0094]    There was used a 0.6 mm thick electrolytically zinc-plated steel plate that had a length of 663 mm and a width of 635 mm. 
         [0095]    In a quadratic alignment were punched along the length and along the width in a distance of each 5 mm 117 micro-holes  4  having a diameter of each 1 mm. 
         [0096]    In the same process step were mounted at one broadside holes  31 , that served as pin hole for a surface treatment, for example a powder coating. 
         [0097]    Then were mounted at the desired locations on both longitudinal sides as well as on both broadsides free press cuts  32 . 
         [0098]    Then was effected the discharge of the plate. 
         [0099]    On both broadsides were mounted different sized embossments  23   a ,  23   b . The small embossments  23   a  serve for the snap In into a ceiling grid profile  25 , and the big embossments  23   b  serve as stopper. 
         [0100]    Then were mounted the edges  33  for each an angle of 45° downwards. 
         [0101]    In principle it would be sufficient to have on each side one edge  33  only. But it is preferred to mount on each side two edges  33 , because two edges  33  result in a finally mounted flat element  1  in an optically better appearance. The distance between two edges  33  may be about 5 mm. 
         [0102]    For a colouring the so prepared piece was subjected to a conventional powder coating. 
         [0103]    Then was fixed on the in mounted form not visible side along the edges  33  the sealing material  34 . Thereby a weather strip, especially made of self-adhesive cell-caoutchouc, may be used. Especially suitable are the fire-proof polyurethane foam strips “Stop-Fire” of the company Maag Technik AG in CH-8602 Dübendorf/Switzerland. 
         [0104]    Inventive flat elements  1  may be hung up on a sealing and may be connected with each other in the following way to an inventive device for thermal adjustment of indoor air, especially for cooling of indoor air: 
         [0105]    A column of flat elements  1   a ,  1   b ,  1   c  may comprise from two to eight, especially from two to six, preferably from four to six, flat elements  1   a ,  1   b ,  1   c.    
         [0106]    On a sealing substructure are mounted suspensory mountings. In these suspensory mountings are fixed in parallel manner to each other rail-shaped ceiling grid profiles  25 , especially hung up in a flexible form. 
         [0107]    Ceiling grid profiles  25  that have the cross section as shown in  FIG. 12  are especially suitable for the purposes of the present invention. 
         [0108]    It is preferred to use for the hanging of an air conduct chamber  2  two rail-shaped ceiling grid profiles  25  arranged in parallel manner to each other. 
         [0109]    Then are engaged the brackets  30  as shown in  FIGS. 11   a  to  11   d  into the two ceiling grid profiles  25 . 
         [0110]    It is preferred for the hanging of an air conduct chamber  2  on each of the two rail-shaped ceiling grid profiles  25  to engage two brackets  30 . 
         [0111]    Then a first air conduct chamber  2   a  is hung up at the mentioned four brackets  30 . 
         [0112]    All further air conduct chambers  2   b , 2   c  are hung up analogously. 
         [0113]    The so hung up air conduct chambers  2   a , 2   b , 2   c  may be connected with each other as follows: 
         [0114]    The connecting piece  9  in the form of a pipe that is in the opening  7  for the inlet of air in the first air conduct chamber  2   a  is connected with a conduct in which supply air is fed. 
         [0115]    The connecting piece  9  in the form of a pipe that is in the opening  8  for the outlet of air in the first air conduct chamber  2   a  is connected with the connecting piece  9  in the form of a pipe that is in the opening  7  for the inlet of air in the second air conduct chamber  2 b by means of a muffle with a centric mounted stopper and with lip seals. 
         [0116]    Suitable muffles for this purpose are available from the company Schmidlin AG in CH-8910 Affoltern am Albis/Switzerland. 
         [0117]    All further air conduct chambers  2 c, 2 d are connected in analogy to the connection of the first air conduct chamber  2   a  with the second air conduct chamber  2   b.    
         [0118]    The connecting piece  9  in the form of a pipe that is in the opening  8  for the outlet of air in the last air conduct chamber  2   c  of a column is caped with an end cap  24 . 
         [0119]    Thereby attention has to be paid on that all above mentioned connections are essentially hermetically sealed. 
         [0120]    Then the respective required number of active ceiling areas  3  with micro-holes  4  is engaged into the two ceiling grid profiles  25  and is aligned so that an optically proper picture of gaps is formed. 
         [0121]    Into such an inventive device is fed preferably ionized supply air. Ionized supply air is preferably prepared according to the process as described in DE  10007   523 . 
         [0122]    In  FIG. 16  is shown a possible scheme according to which, based on the actual situation, an ionization of the supply air may be guaranteed. The in  FIG. 16  the used reference numerals have the following meaning: 
         [0123]      35  device for the air conditioning 
         [0124]      36  device for the ionization of air 
         [0125]      37  device for the thermal adjustment of the supply air 
         [0126]      38  room to be thermally adjusted 
         [0127]      39  inventive flat elements  1   
         [0128]      40  device for the control of the ionization of the supply air, based on the actual situation 
         [0129]      41  outdoor air conduct 
         [0130]      42  supply air conduct 
         [0131]      43  exhaust air conduct 
         [0132]      44  discharged air conduct 
         [0133]      45  circulating air conduct 
         [0134]      46  air quality sensor 
         [0135]      47  ozone sensor 
         [0136]      48  air humidity sensor 
         [0137]      49  air stream sensor 
         [0138]      50  air quality sensor 
         [0139]      51  controller for the supply air volume stream 
         [0140]      52  separately hung up foil  26   
         [0141]      53  laminar displacement air stream. 
         [0142]    Due to the laminar displacement air stream obtained with the inventive device the user is located in the correspondingly air-conditioned room in a direct way in the correspondingly purified supply air stream. 
         [0143]    A further advantage of the with the inventive device obtained laminar displacement air stream consists therein that on the outside, that is the visible side, of the active ceiling area  3  no particles may be deposited, and thus no essential contamination of the visible surface area may occur. 
         [0144]    Also due to the laminar displacement air stream on the visible side of the active ceiling area  3  no water vapor may condense. 
         [0145]    In the present invention the following reference numerals are used: 
         [0146]      1  flat element 
         [0147]      2  air conduct chamber 
         [0148]      3  active ceiling area 
         [0149]      4  micro-holes 
         [0150]      5  upper surface 
         [0151]      6   a ,  6   b  side walls 
         [0152]      7  opening for the inlet of air 
         [0153]      8  opening for the outlet of air 
         [0154]      9  connecting piece in the form of a pipe 
         [0155]      10  baffle 
         [0156]      11  air conduct angle 
         [0157]      12  lower part of the front side of a baffle 
         [0158]      13  lower part of the back side of a baffle 
         [0159]      14  upper part  15  upper part of the back side of a first back of the front side of a second baffle 
         [0160]      16  upper part of the front side of a first baffle 
         [0161]      17  upper part of the back side of the last baffle 
         [0162]      18  edges 
         [0163]      19  free press cuts 
         [0164]      20 ,  21  holes 
         [0165]      22  side walls 
         [0166]      23  fixing parts and/or arrests 
         [0167]      24  end cap 
         [0168]      25  ceiling grid profile 
         [0169]      26  foil 
         [0170]      27  micro-holes in the foil  26   
         [0171]      28  light source 
         [0172]      29  frame 
         [0173]      30  bracket 
         [0174]      31  holes 
         [0175]      32  free press cuts 
         [0176]      33  edges 
         [0177]      34  sealing material.