Diffuser, air treating plant comprising said diffuser and use of said diffuser for treating air

Abstract

A diffuser for air treating plants that includes a channel having a lateral wall axially extending between upper and a lower end portions defining in the interior thereof a chamber for the passage of an air flow, an inlet configured for introducing air into the chamber, a plurality of throwing through openings defined on the lateral wall for putting in fluid communication the chamber with the outer environment, a plurality of induction through openings defined on the lateral wall for putting in fluid communication the chamber with the outer environment. A predetermined number of throwing through openings of the plurality is spaced from a predetermined number of induction through openings of the plurality along a direction parallel to the axial extension of the channel; the predetermined number of throwing through openings has an air passage cross-section greater than an air passage cross-section of the predetermined number of induction through openings.

1 . Vertical diffuser for air treating plants, said diffuser comprising at least one channel having:
 a lateral wall axially extending between an upper end portion and a lower end portion and defining in the interior thereof a chamber for the passage of an air flow,   an inlet in correspondence of the upper end portion for introducing air into the chamber,   a plurality of throwing through openings defined on the lateral wall of said channel and aligned along a trajectory transversal to an axial extension of the channel for defining a row of throwing through openings, said throwing through openings putting in fluid communication the chamber with the outer environment and enabling to diffuse air in the outer environment,   a plurality of induction through openings defined on the lateral wall of said channel and aligned along a respective trajectory transversal to the axial extension of the channel for defining a respective row of induction through openings, said induction through openings putting in fluid communication the chamber with the outer environment and enabling to diffuse air in the outer environment,   
       wherein a predetermined number of throwing through openings of said plurality of throwing through openings is spaced from a predetermined number of induction through openings of said plurality of induction through openings along a direction parallel to the axial extension of the channel, said predetermined number of throwing through openings has an air passage cross-section greater than an air passage cross-section of said predetermined number of induction through openings. 
     
     
         2 . Diffuser according to  claim 1 , wherein the plurality of throwing through openings comprise at least one group of at least ten throwing through openings aligned along the trajectory transversal to the axial extension of the channel for defining a row of throwing through openings,
 wherein the plurality of induction through openings comprise at least one group of at least ten induction through openings aligned along the respective trajectory transversal to the axial extension of the channel for defining a respective row of induction through openings, the induction through openings of the respective group being spaced from the throwing through openings of the respective group along a direction parallel to the axial extension of the channel,   wherein each of the throwing through openings of said plurality has an air passage cross-section greater than an air passage cross-section of each of the induction through openings of said plurality.   
     
     
         3 . Diffuser according to  claim 1 , wherein the extension plane of the trajectory of the group of the induction through openings is spaced from and parallel to the extension plane of the trajectory of the group of the throwing through openings. 
     
     
         4 . Diffuser according to  claim 1 , wherein the plurality of throwing through openings is defined on at least one perimetral length of the lateral wall of the channel, said perimetral length having an angular extension, measured transversally to the axial extension of the channel, of more than 90°;
 the plurality of the induction through openings are defined on at least one perimetral length of the lateral wall of the channel, said perimetral length having an angular extension, measured transversally to the axial extension of the channel, of more than 90°. 
 
     
     
         5 . Diffuser according to  claim 4 , wherein the throwing through openings are defined along all the perimetral extension of the lateral wall of the channel, and wherein
 the induction through openings are defined along all the perimetral extension of the lateral wall of the channel.   
     
     
         6 . Diffuser according to  claim 1 , wherein the plurality of throwing through openings comprise at least one group of throwing through openings aligned along the trajectory transversal to the axial direction of the channel for defining a row of throwing through openings, the throwing through openings of said row being at the same distance from a main development axis of the channel and being disposed substantially along all the perimeter of the channel about the main development axis, wherein the plurality of induction through openings comprises at least one group of induction through openings aligned along the respective trajectory transversal to the axial extension of the channel for defining a respective row of induction through openings, the induction through openings of said row being at the same distance from a main development axis of the channel and being disposed substantially along all the perimeter of the channel around the main development axis. 
     
     
         7 . Diffuser according to  claim 1 , wherein the lateral wall has, according to a cross-section perpendicular to an extension axis of the channel, a circular-type shape, the plurality of throwing through openings and the plurality of the induction through openings being defined along all the radial development of the lateral wall of the channel. 
     
     
         8 . Diffuser according to  claim 1 , wherein the throwing through openings are placed closer to the inlet than the induction through openings. 
     
     
         9 . Diffuser according to  claim 1 , comprising at least three different groups of throwing through openings aligned along horizontal trajectories transversal to the axial direction of the channel for defining respective rows of throwing through openings, the horizontal trajectories being parallel and distanced one from the other along the axial direction. 
     
     
         10 . Diffuser according to  claim 1 , comprising at least three different groups of induction through openings aligned along respective horizontal trajectories transversal to the axial extension of the channel for defining respective rows of induction through openings, the respective horizontal trajectories being parallel and distanced one from the other along the axial direction. 
     
     
         11 . Diffuser according to  claim 1 , comprising a plurality of discharging openings defined on the lateral wall of said channel and aligned along a discharging trajectory transversal to an axial extension of the channel for defining a row of discharging openings, said discharging openings putting in fluid communication the chamber with the outer environment and enabling to diffuse air in the outer environment, said plurality of discharging openings has an air passage cross-section greater than an air passage cross-section of said predetermined number of induction through openings. 
     
     
         12 . Diffuser according to  claim 11 , wherein the throwing through openings have an air passage cross-section greater than an air passage cross-section of said plurality of discharging openings. 
     
     
         13 . Diffuser according to  claim 1 , wherein the lateral wall has at the upper end portion, a free edge delimiting a general through access of the channel, the channel comprising an upper closing element engaged with the lateral wall at the free edge of the upper end portion, said upper closing element obstructing the general through access, the inlet of the channel being defined on the upper closing element, and being delimited by a collar emerging from the upper closing element, a wall of the collar having a predetermined number of discharging hatches closed by respective removable plugs; and wherein the lateral wall has at the lower end portion, a free edge delimiting a general passage of the channel, the channel comprising a lower closing element engaged with the lateral wall at the free edge of the lower end portion, said lower closing element obstructing the general passage. 
     
     
         14 . Diffuser according to  claim 1 , further comprising a plurality of hanging elements coupled to an upper element placed in correspondence of the air inlet, the hanging element being spaced around a passage aperture in the upper element and being configured to hang the diffuser to the roof. 
     
     
         15 . Diffuser according to  claim 14 , wherein the hanging elements are eyebolt receiving suspension cables or rods. 
     
     
         16 . Diffuser according to  claim 1 , further comprising at least one element for intercepting the air flow, engaged inside the chamber of the channel, said intercepting element comprising a body extending from a base portion, placed at the lateral wall, to an access portion emerging from said base portion inside of the chamber, for partitioning the chamber in a main chamber and in an auxiliary chamber communicating with each other by an access, wherein the intercepting element comprises:
 a flow adjusting member engaged at the access of the intercepting element relatively movable at least between:
 a completely opened position, wherein said member enables the fluid communication between the main chamber and the auxiliary chamber, 
 and a completely closed position, wherein the adjusting member interdicts the communication between the main chamber and the auxiliary chamber, 
   said adjusting member being configured for managing the air passage from the main chamber to the auxiliary chamber.   
     
     
         17 . Diffuser according to  claim 16 , wherein the auxiliary chamber is either closed auxiliary chamber communicating with the external environment through discharging openings placed in the lateral wall of said channel, or an open auxiliary chamber communicating with the external environment through a lower lateral opening, the lower lateral opening being defined between a lower cap and a lower closing element,
 wherein the lateral wall has at the lower end portion, a free edge delimiting a general passage of the channel, the lower closing element being engaged with the lateral wall at the free edge of the lower end portion.   
     
     
         18 . Diffuser according to  claim 16 , comprising:
 an activating element, for example an electric motor, operating on the adjusting member and configured for moving said adjusting member at least between said completely closed and completely opened positions, optionally the activating element being configured for moving the adjusting member to a plurality of intermediate positions, comprised between said completely closed and completely opened positions, for defining a flow passage opening through the access having a width variable as a function of the positions taken by the adjusting member with respect to the container;   at least one sensor housed inside the chamber of the channel and configured for emitting a monitoring signal representative of a pressure inside said main chamber delimited at the bottom by the intercepting element, laterally by the lateral wall and above by an upper closing element having the inlet,   at least one control unit connected at least to one sensor and to said activating element, said control unit being configured for:
 receiving from the sensor, the monitoring signal for estimating a fluid pressure present in said main chamber, 
 commanding the activating element to move the adjusting member as a function of the estimated pressure. 
   
     
     
         19 . Diffuser according to  claim 18 , wherein the control unit is configured for:
 receiving from the sensor, the monitoring signal for estimating a fluid pressure present in said main chamber,   comparing the value of the estimated pressure inside said main chamber of the channel with the value of the reference threshold,   upon said comparison step, commanding the activating element to move the adjusting member as a function of a predetermined relationship between the value of the estimated pressure inside said main chamber of the channel with the value of a reference threshold;   optionally, commanding the activating element to move the adjusting member when the estimated pressure inside the main chamber of the channel arrives to or exceeds the value of the reference threshold.   
     
     
         20 . Diffuser according  claim 1 , wherein the plurality of throwing through openings comprises at least one group of throwing through openings aligned along a trajectory transversal to the axial extension of the channel for defining a row of throwing through openings, and at least one second group of throwing through openings aligned along a second trajectory parallel to the first trajectory for defining a second row of throwing through openings, the throwing through openings of the group of the row being offset along an axis parallel to the main development axis of the channel with respect to the throwing through openings of the second group. 
     
     
         21 . Diffuser according to  claim 1 , further comprising a plurality of substantially flat septa substantially parallel to each other, housed in the chamber, said septa defining among each other a plurality of gaps extending transversally to the main development axis of the channel,
 wherein each septum has a central opening substantially aligned with the main development axis of the channel, the central openings of following septa dimensionally decreasing away from the inlet.