An air valve with improved ventilation

Abstract

The present invention relates to an air valve (1) for ventilation of rooms in a building. Said valve (1) is suitable to be installed and connected to an air duct (2) via a ventilation duct opening (3) in a surface of said room (4). The valve comprises a distal end (5) and a proximal end (6), wherein said distal end (5) is closer to the air duct (2) than the proximal end (6). The valve (1) further comprises an inner baffle element (7) located at a radially inside position. The valve (1) further comprises an outer baffle element (8) located at a radially outside position and surrounding said inner baffle element (7). An airflow space (9) is defined between said inner and outer baffle elements (7, 8). The diameter of said outer baffle element (8) decreases continuously from a first maximum predetermined value at said distal end (5) to a first minimum predetermined value at an intermediate position (11) between said distal end (5) and said proximal end (6). The diameter of said inner baffle element (7) increases continuously from a second minimum predetermined value (12) at said distal end (5) to a second maximum predetermined value at said proximal end (6). Said inner and outer baffle elements (7, 8) are defined by a fluent and continuous curve (14) between said distal and proximal ends (5, 6).

1 . An air valve for ventilation of rooms in a building, wherein said valve is suitable to be installed and connected to an air duct via a ventilation duct opening in a surface of said room, wherein the valve comprises a distal end and a proximal end, wherein said distal end is closer to the air duct than the proximal end, said valve further comprises: an inner baffle element located at a radially inside position and an outer baffle element located at a radially outside position and surrounding said inner baffle element, wherein an airflow space is defined between said inner and outer baffle elements,
 wherein the diameter of said outer baffle element decreases continuously from a first maximum predetermined value at said distal end to a first minimum predetermined value at an intermediate position between said distal end and said proximal end,   and wherein the diameter of said inner baffle element increases continuously from a second minimum predetermined value at said distal end to a second maxim um predetermined value at said proximal end, characterized in that said inner and outer baffle elements are defined by a fluent and continuous curve between said distal and proximal ends.   
     
     
         2 . The air valve according to  claim 1 , wherein said curve is semi-circular or elliptical. 
     
     
         3 . The air valve according to  claim 1 , wherein the diameter of said outer baffle element increases continuously from the first minimum predetermined value at said intermediate position to a third maximum predetermined value at said proximal end. 
     
     
         4 . The air valve according to  claim 3 , wherein the third maximum predetermined value is less than 15% larger than the first maximum predetermined values are different. 
     
     
         5 . The air valve according to  claim 1 , wherein the first minimum predetermined value is smaller than the second maximum predetermined value. 
     
     
         6 . The air valve according to  claim 1 , wherein said inner and outer baffle elements do not extend beyond the ventilation duct opening. 
     
     
         7 . The air valve according to  claim 1 , wherein the airflow is unidirectional, either from the air duct to the room or from the room to the air duct, preferably unidirectional from said air duct to said room. 
     
     
         8 . The air valve according to  claim 1 , wherein the airflow space is narrower at the proximal end than at the distal end. 
     
     
         9 . The air valve according to  claim 1 , wherein the ratio between the diameter of the outer baffle element at the intermediate position to that at the proximal end to that at the distal end is between 1:1.1:1.1 and 1:4:4, preferably between 1:1.5:1.5 and 1:3:3 and/or wherein the ratio of the diameter of the inner baffle element at the distal end to that at the proximal end is between 1:2 and 1:16, preferably between 1:4 and 1:10. 
     
     
         10 . The air valve according to  claim 1 , wherein said inner baffle element is adapted to adjust the position of flow regulating means of the valve via axial rotation of said inner baffle element, wherein said position is configured to adjust the size of said airflow space between the flow regulating means and the inner and outer baffle elements. 
     
     
         11 . The air valve according to  claim 1 , wherein the inner and outer baffle elements do not move between said distal and proximal ends, and/or wherein the inner baffle element does not tilt with respect to the surface. 
     
     
         12 . The air valve according to  claim 10 , wherein the flow regulating means are closer to the distal end than to the proximal end, preferably wherein maximal air flow is achieved when the regulating means is closer to said distal end. 
     
     
         13 . The air valve according to  claim 1 , wherein said inner baffle element comprises an electrical body. 
     
     
         14 . The air valve according to  claim 13 , wherein the electrical body is configured as a luminaire body that is adapted to receive and connect to a light source. 
     
     
         15 . The air valve according to  claim 13 , wherein the electrical body is selected from the group consisting of a temperature sensor, a volatile organic compounds sensor, a smoke detector, a moisture detector, ex and a motion detector. 
     
     
         16 . Method for ventilation of rooms in a building using an air valve in an air duct, wherein the valve has a distal end and a proximal end, wherein said distal end is closer to the air duct than the proximal end, the method comprises the steps of:
 placing an inner baffle element at a radially inside position,   placing an outer baffle element at a radially outside position, wherein said outer baffle element surrounds the inner baffle element,   defining an airflow space between said inner and outer baffle elements,   adapting the diameter of said outer baffle element to decrease continuously from a first maximum predetermined value at said distal end to a first minim um predetermined value at an intermediate position between said distal end and said proximal end,   adapting the diameter of said inner baffle element to increase continuously from a second minimum predetermined value at said distal end to a second maxim um predetermined value at said proximal end,   wherein the method comprises the step of:   defining the inner and outer baffle elements by a fluent and continuous curve between said distal and proximal end.   
     
     
         17 . The method according to  claim 16 , wherein the method further comprises the step of adapting the curve to be semi-circular. 
     
     
         18 . The method according to  claim 16 , wherein the method further comprises the step of adapting the first minimum predetermined value to be smaller than the second maximum predetermined value. 
     
     
         19 . (canceled)