JP2007505283A - Method and apparatus for ventilation and air decontamination by using a mixture of a blow-off flow and a suction flow drawn by the Coanda effect - Google Patents

Abstract

Method and apparatus for ventilation and air pollution removal by mixing use of a blow-up flow sucked by the Coanda effect and a suction flow The present invention is based on a blow-off jet flow (19) and a Coanda effect (C) sucked by the Coanda effect (C). The invention relates to a device (101) for air decontamination of a room (3) by mixing with a drawn-in suction stream (21). The vertically placed trunk means (103) is provided with a suction lower end (104) and a blowing upper end (105). The drive means (106) moves air (A) to the inside and outside of the trunk means. The suction nozzle (118) is provided with a vertical suction surface (Sa), which is parallel to the floor (6) and sucked into the floor (6) by the Coanda effect (C) ( 55) to help inhale air (A). The blowing nozzle (129) utilizing the surface effect on the ceiling (20) has a front porous blowing surface (Ss). This blowout surface generates a primary jet (19) of air, and the primary jet is sucked to the ceiling (20) by the Coanda effect (C). The decontamination means (127) performs decontamination of air (A). The effective area (Sae) of the suction surface (Sa) is smaller than the effective area (Sse) of the blowing surface (Ss). This helps to eliminate the “slopes (Fs) that impede replacement air flow” that are normally associated with blower-mounted ventilation systems.

Description

  The present invention is a method and apparatus for ventilation and air decontamination aimed at reducing the amount of pollutants floating in the air of a room, and by mixing, is subjected to two Coanda effects and sucked to the ceiling The present invention relates to a type that operates using a primary blowout jet and a suction flow sucked to the floor.

Conventionally, air conditioning methods are technically classified by the method of air supply inside the room to be processed. In other words, room air conditioning methods can be classified into ventilation by air piston replacement using unidirectional flow, ventilation by air replacement using thermal stratification effect, zone ventilation, mixed ventilation, and ventilation by local jet. it can.
In ventilation terminology, the “primary air jet” is air that has been preconditioned (cooling, heating, decontamination, humidification, and dehumidification, etc.), and this air includes grills, perforated panels, and diffuse ceilings. It can be taken into the room through a surface outlet. The term “total atmosphere” is used for a mixture of primary air introduced into a room and room air that is gradually moved and mixed with the primary air.

In a unidirectional flow, or ventilation method with air displacement at a piston known as a “laminar chamber”, the air is moved by a unidirectional primary air jet that spans most of the room. As the blowout surface of the primary air jet into the room, most of one wall of the room (generally, one of the ceiling or the side wall in some cases) is used. Air is blown in a parallel flow towards the opposite wall (typically the floor) at a speed sufficient to pass through the room, the opposite wall being porous, Works as a suction surface. It is also a common practice to suck up air from a suction wall grill that is installed close to the floor under the wall. Laminar flow works using the piston principle. The primary air stream acts like a syringe to push back contaminated air that has been removed from the room. “Laminar flow chambers” are used to achieve very low contaminant concentrations. The removed air is sucked up by an air treatment unit incorporated in the building, decontaminated by filtration in the unit, and mixed with fresh air. The air is then blown back into the room through a flow surface (typically a ceiling) fitted with a high performance (HEPA) air particulate filter. The flow velocity is approximately uniform over most of the room, reaching values in the range of 0.3 m / s (0.3 meters per second) to 0.5 m / s throughout the room to be protected. The blowing surface and the suction surface
・ Opposite wall (perforated ceiling and perforated floor)
・ Or placed on one of the vertical walls (ceiling with bottom side suction grille)
・ Never put it on the same wall.

  The amount of air blown into the laminar flow is equivalent to 10 to 100 times the amount of air blown out by a mixed ventilation device with turbulent flow or a device that moves air by the thermal stratification effect. In addition, it is necessary to install a wall with a HEPA filter on the entire ceiling. The following points are seen in the ventilation device by air piston replacement (laminar flow). These points are that the investment cost is an order of magnitude higher and the energy cost is about 10 times that of a mixed ventilation device (turbulent flow chamber) or a device that performs air replacement by thermal stratification.

Furthermore, due to the structure of such a ventilator with an entire blowout wall (ceiling or wall), these cannot be implemented in the form of a movable system. Ventilators using air displacement with pistons are used only for decontamination and ultra-clean applications, and are not used at all for air conditioning purposes because they are too expensive.
In a ventilation method using air displacement by a thermal stratification effect, one or more diffusers of cold air (cold air) are placed on or near the floor. This method works by the difference in air density inside the room. A layer of “fresh” primary air that is taken into the room through the floor and is denser and cooler than the ambient air serves to gradually push up the ambient air (which is warmer than the cold and floats on it). This stratification method is less expensive than the piston method. The purpose of this method is mainly to ensure that the room occupants can stay at a comfortable temperature. Unfortunately, this method is extremely responsive to temperature fluctuations and is not very effective in achieving air pollution (especially bacteria or mold) removal. Furthermore, the diffuser used here is large in size and requires a large-scale infrastructure work at the height of the floor. These cannot be made in the form of mobile systems. Ventilators that perform air replacement by the thermal stratification effect are mainly used for air conditioning equipment.

  In the zone ventilation method, the essence is that a particular zone or volume of the room is treated, but the rest of the room is left unattended. As a general rule, in the ventilation zone, the efficiency of zone ventilation is seen to be better than the efficiency of mixed ventilation. In general, however, if the contaminants are totally diluted, this results in an inefficiency in the overall decontamination of the room.

  In the mixed ventilation method, air movement is achieved primarily by energy delivered by one or more primary air jets injected into the room. The logical purpose of the method by mixing is to establish a uniform state of the air inside the room. For this reason, the primary air jet injected into the room mixes with a large volume of ambient air. This phenomenon is called “induction”. In general, mixed ventilation is preferred for the purpose of occupants getting a better comfort temperature. The term “resident” zone refers to the part of the room where occupants are usually seen. In general, this is defined as a space that extends from the wall with the window 50 cm (cm) behind and the opposite wall to 20 cm behind to the surface extending 180 cm above the floor. . The mixed ventilation method mixes primary air and existing air in the room (as complete and uniform as possible), not only diluting and mitigating the impurities and contaminants in the room, but traditionally making them uniform The purpose is to be distributed. Similarly, it is desirable that the room temperature be as uniform as possible in order to eliminate resident discomfort. Unfortunately, due to the size of the appropriately sized room and the number of diffusers, the injection speed of the primary air jet (cold air) should be faster than it can be perceived as comfortable when the jet hits the occupant. There is a need. The mixed ventilation method can be technically divided into two subtypes. The two are mixed ventilation using a free primary jet and mixed ventilation using a primary jet drawn by the Coanda effect.

  In a mixed ventilation method using a free primary jet, the primary air jet is typically passed through a diffuser located in the central part of the room wall (usually the ceiling) (typically in the vertical direction). Injected into. The primary air jet passes through the surrounding area of the living zone in a substantially vertical direction. Air movement in the room is almost scattered. The air jet always reaches the occupants almost directly before significantly mixing with the air in the room. For this reason, residents often feel uncomfortable with respect to temperature.

  In the mixed ventilation method using the primary jet sucked using the Coanda effect, the primary air jet is passed through a diffuser located on the side of the room wall (generally close to the ceiling), It is injected into the room in a direction substantially parallel to and in contact with the wall (generally the ceiling) of the room. As a result, the primary jet is taken outside the living zone (between the surrounding area of the living zone and the wall on which the jet is drawn). Thus, the primary air travels along a long flow path and is mixed with a large amount of ambient air before reaching the living zone. This form of arrangement has the reputation of being thermally more comfortable for the occupant.

  In 1910, an aerial experiment conducted by a Romanian engineer, Coanda, revealed the following. That is, when an air jet is placed in a form that is sufficiently close to a surface such as a ceiling, the air jet is attracted to the surface and continues to flow while in contact with the surface. This phenomenon is known as the Coanda effect or the surface effect. This phenomenon is attributed to the fact that the air jet has the property of being sucked into the ambient air in contact with it and mixed (diffused) with the ambient air. No matter how close the surface is, ambient air cannot be inhaled. This reduces the pressure between the air flow and the surface, thereby making it easier for the air jet to be sucked onto the surface.

  The present invention relates to a mixing type ventilation method using a primary jet that is sucked to the ceiling by the Coanda effect and air that is also sucked to the floor by the Coanda effect and is taken out through a suction outlet in the form of a suction flow. In this type of ventilation, as long as the room dimensions are met, the air jet reaches the wall opposite to the wall from which it was blown out, while maintaining its efficiency, before being “diluted”. The overall flow of air then continues to descend along the opposite wall and then returns towards the suction outlet close to the floor. As a result, a so-called “enclosed area” of the living zone can be realized by the flow of air flowing from the blowing surface to the suction surface.

  The first experimental data on the ventilation method by mixing with the primary jet sucked by the Coanda effect dates back to 1939, and this year, Baturin and Hanzhonkov refracted the ceiling and its opposite wall towards the living zone. The phenomenon of “backflow” is demonstrated. According to Baturin and Hanzhonkov, in the analysis of the shape of the air flow caused by the phenomenon, the form of air movement is hardly affected by the shape of the suction grille (surface) and the suction conditions, but it depends on the position of the blowout grille (surface). I concluded that it was decided. A theoretical work, published subsequently by Nelson, Steward, Bromlies, and Gunes, describes information about velocity and temperature distributions associated with mixed ventilation using a sucked primary jet. Other theoretical works written by Linke show that there is a maximum length of room that can be properly ventilated using this principle. Linke specifically has a Reynolds number of linear primary jets “sucked” to the ceiling in the range of 1,825 to 12,000 in order to be able to establish an “enclosed” flow. Proved that the length of must not exceed three times the width of the room.

If the length of the room is within this limit (less than about 3 times the width), a flow surrounding a single zone can be realized. A description of this phenomenon will be given later with reference to FIG. These rooms are called “short”.
A room that exceeds this limit is called "long". The room is “divided” by the flow of air. The first loop-like movement of air is similar to that achieved in a “short” room, crawling on the ceiling, then descending vertically down the center of the living zone, horizontally towards the suction surface near the floor It consists of an overall jet of air returning in the direction. Another vortex or air “closed” loop extends between the first (air) loop and the opposite side of the room and enters the interior of the living zone. This phenomenon will be described later with reference to FIG.

  These published theoretical and experimental scientific studies show the following: The point is that if no specific conditions are imposed (relating to the average blow speed and average suction speed, the conditions recommended by the present invention will be described later), the working side wall (the wall provided with the blow face and the suction face) ), A “slope that obstructs the flow of replacement air” appears at a distance of approximately one room height at a specific distance in the horizontal direction.

This “slope that obstructs the flow of replacement air” rises from the floor in the form of an upward slope going toward the outlet and passes through the living zone. This phenomenon will be described later with reference to FIGS.
The theoretical work published on the mechanism of air flow and air velocity in a room where the mixed ventilation method of the sucked-up primary jet is implemented is concerned only with the thermal use of ventilation. These objectives are to ensure that the speed and temperature in the living zone are as comfortable as possible for the occupant. In carrying out the mixed ventilation method of the sucked-up primary jet, an effect generally pursued in the prior art is to increase the distance in the room where the primary jet crawls before passing through the living zone. [Represented by a group of scientists who have published the scientific work cited above] Those skilled in the art have so far used a mixed ventilation method that utilizes a drawn primary jet to decontaminate (ie, be ventilated in this way). We were not interested in the method to be implemented to optimize for the purpose of reducing the amount of contaminating particles floating inside the room. As mentioned above, those skilled in the art have so far mainly focused on the thermal effects of ventilation and the thermal comfort of the occupants. Thus, the “slope that obstructs the flow of replacement air” has the property of rising from the floor of the room ventilated by the primary jet drawn to the ceiling by the Coanda effect, and the resulting effect is somewhat “beneficial” in that sense. Has been recognized. For those skilled in the art, such a “slope that impedes replacement air flow” promotes mixing and thus increases the efficiency of thermal ventilation. As will be understood herein, those skilled in the art will attempt to reduce or eliminate the effects of “slopes that impede replacement air flow”, which are substantially detrimental in terms of air decontamination. I did not come. In the usual way of thinking of those skilled in the art, the problem of air pollution is as follows. First, it is a serious air pollution which is solved by a ventilation method by moving an air piston using a one-way flow, and the main problem is high cost. Alternatively, air pollution that is less important and is solved by conventional ventilation using mixing with a free primary jet or by mixing with a sucked primary jet, which “slopes that impede replacement air flow” Is not considered (that is, its adverse effects are ignored). Yet another insignificant air pollution that uses recycled conventional air purifiers, resulting in less efficient air decontamination, but includes contaminated particles coming from the floor, The increased disturbing airflow is negligible due to the presence of a “slope that disturbs the replacement airflow”.

  The main object of the present invention is the essential effect observed in the method of ventilation by the sucked-in primary air jet, and in particular the comfort guaranteed to the occupant by this method and the one-way flow air piston Enables lower provisioning costs and implementation costs compared to replacement ventilation at the same time, while at the same time being suitable for use in applications such as high levels of decontamination and “ultra-clean” Is to do.

  For this purpose, the present invention aims at a room where mixed ventilation using a sucked-up jet is performed, in which contaminated particles that have settled on the floor return to a state where they move upward again. To reduce (or eliminate) the effects of a phenomenon that normally occurs. That is, the main object of the present invention is to improve the ventilation method by the primary jet that is sucked to the ceiling by the Coanda effect in order to reduce or eliminate the existence of the “slope that disturbs the exchange air flow” having the property of rising from the floor. It is to propose a means for this. A second object of the present invention is a movable device for removing air contamination that is not affected by the structure of a building, and is a primary device that is sucked in such a manner that there is no “inclination that impedes replacement air flow”. A new architecture is proposed for a device that can implement a method using a jet.

Movable devices for air decontamination that are unaffected by the structure of the building operate on a principle similar to that of air dilution in rooms where turbulence is present, or utilize local jet type ventilation Acts like an air purifier.
The technical background prior to the present invention includes a movable air decontamination device that sucks and blows air substantially horizontally and at approximately the same height. Among such devices, mention may be made of what is described in the document US Pat. No. 6,425,932 by Huehn, Deros and Bourque. As can be clearly seen, these types of devices cannot deliver a primary jet drawn to the ceiling or use an intake air flow drawn to the floor.

Previous technical backgrounds also include mobile air decontamination equipment that draws air in high places and blows out low places.
The document of US Pat. No. 5,240,478 by Messina describes a HEPA filter air purifier that draws air in high places and blows out low places.
In the document US Pat. No. 5,612,001 by Matschke, a UV lamp cleaner is described in which air is drawn in at a high place and blown out at a low place.

The document US Pat. No. 5,656,242 by Morrow and McLean describes a UV lamp cleaner with an electrostatic filter that sucks air in high places and blows it out in low places.
As can be seen, these purifiers that draw in air at high places and blow out at low places do not create a primary air jet that is drawn to the ceiling, and these purifiers come from the floor because they blow out air at low places It actively increases the spread of contaminated airflow.

In the previous prior art, there is also a device for removing air contamination that sucks air in a low place and blows it out in a high place, but since the outlet is too far away from the ceiling, the primary air jet is caused by the Coanda effect. It is not sucked to the ceiling.
According to the document of US-4 900 344 by Lansing, a filter in which a bottom suction type intake nozzle is provided at a floor height position and an upper blowout nozzle is provided at a low height position, and there is no suction to the ceiling. A purifier is described.

According to the document of patent US-5 997 619 by Knuth and Carey, a UV lamp / filter cleaner that sucks air sideways at a low location, blows out upwards at a low height, and does not draw to the ceiling. Is described.
In the document of US Pat. No. 6,001,145 by Hammes, the bottom suction type intake nozzle is provided at the floor height, and the upper blowout nozzle is provided at the low height, so that the primary jet is not sucked to the ceiling. The filter purifier is described.

In the document of US-5 453 049 by Tillman and Smith, the primary flow is provided with a wide bottom inlet through a HEPA filter and a vertical top outlet through a small hole at a low height. A three-section purifier that does not draw to the ceiling is described.
U.S. Pat. No. 4,210,429 to Golstein describes a UV lamp / filter cleaning that has a bottom side inlet and a lower side outlet on the lower side so that the primary jet is not drawn to the ceiling. The instrument is described.

These purifiers are of the type using a local jet. None of these patent documents deal with devices that use a primary jet that is drawn to the ceiling by the Coanda effect, and either reduces or eliminates the “slope that hinders replacement air flow” between the floor and the ceiling. Means intended to do is not described.
Finally, there is a movable air decontamination device that sucks air in a low place and blows it out in a high place close to the ceiling. In theory, the primary air jet sucks the ceiling by the Coanda effect. It is possible to be

  In the document of patent US-5 290 330 by Tepper, Suchomski and Mex, it is in the form of a longitudinal rectangular block with a bottom suction port and a top delivery port, both of which are horizontal. An independent device for air decontamination is described. The air is decontaminated by a cylindrical filter cartridge disposed longitudinally within the device. The document states that the inlet and outlet are separated vertically and that the air moves reliably from the ceiling towards the floor. This document does not explain at all about the suction of the air jet to the ceiling by the Coanda effect or the suction of the suction flow to the floor by the Coanda effect. In addition, the existence of a “tilt that obstructs the exchange air flow” that has the property of rising from the floor to the ceiling in the form of an inclination is not described. This document does not describe any means for controlling the phenomenon. Finally, as can be seen from the drawing, the suction grill and the blowout grill are similar and their dimensions are the same. As a result, the blowing speed and the suction speed are almost equal.

  In the document of US Pat. No. 5,225,167 by Wetzel, an independent device for air decontamination, essentially in the form of a rectangular block, installed on the wall of a room, using UV lamps and HEPA filters An apparatus for removing air contamination is described. Air is sucked through the grille, which is close to the floor but still some distance from the floor. Air is blown out in the form of close to the ceiling through a HEPA filter with a quarter of the cylindrical shape. The document does not describe that the air jet is sucked to the ceiling by the Coanda effect, nor does it describe the suction flow sucked to the floor by the Coanda effect. The outlet of the HEPA filter formed into a cylindrical quarter shape tends to tilt the primary jet to the floor, which is sucked to the ceiling by the Coanda effect. It is disadvantageous to make it. Similarly, a suction port that is intentionally placed at a distance from the floor is not intended to promote the establishment of a suction flow that is drawn to the floor by the Coanda effect. The document does not describe the existence of a “slope that obstructs the flow of replacement air”, which has the property of rising from the floor to the ceiling. This document does not describe any means for controlling the phenomenon. Finally, as can be seen from the drawing, the dimensions of the suction grille and the blowout grille are substantially the same. Therefore, the suction speed and the blowing speed are almost equal.

  The document US Pat. No. 5,616,172 by Tuckerman, Russel, Knuth and Carey defines the prior art closest to the present invention. This document describes a movable independent device for air decontamination, which is substantially in the form of an elongated rectangular block, placed vertically along the wall of the room to be treated. ing. The air is decontaminated with a UV lamp and a HEPA filter. Air is drawn from the floor through a suction-type intake nozzle formed between the bottom of the device and the floor at the level of the floor. The outlet is placed at the top of the device and blows out vertically towards the ceiling. It is described that the shape of the device is intentionally elongated and the distance between the suction grille and the blowout grille is increased to prevent "shorts" between them. As for the fins, it is described that a primary jet that is placed on a blowing grill and blown out from the upper part of the apparatus is tilted toward the ceiling so that the primary jet flows along the ceiling. Therefore, although not specified, it is considered that the primary jet is attracted to the ceiling by the Coanda effect. However, this document considers that the only means to control the “shunt action” between the suction grill and the blowout grill is to keep the grilles as far apart as possible. Such an arrangement is actually necessary. However, as shown in the scientific document mentioned above and as shown by the description below, it is not enough. First, in the above document, the “inclination that obstructs the flow of exchange air” has the property of climbing from the floor (center of the room) and passing through the living zone through an inclined path that goes up toward the outlet. Existence is not taken into account. The document only considers a direct “shunt” between the inhalation and the blowout, which contains another problem.

  Therefore, the document reduces and / or eliminates “slopes that obstruct the flow of replacement air”, which has the property of rising from the center of the floor toward the ceiling, despite the spacing between the grills. No means related to the following points have been proposed for the purpose of: These points are the ratio between the suction speed and the blowing speed or the ratio between the effective suction area and the effective blowing area.

  The relative dimensions of the effective suction surface and the effective blowing surface are not specified. Unfortunately, if these specific precautions regarding shape and flow velocity are not taken, the spacing between the blow grill and the suction grill is sufficient to eliminate this “tilt hindering replacement air flow” phenomenon. This is not demonstrated in the scientific works mentioned above and in the explanation below.

  As mentioned above, those skilled in the art believe that the inlet has little importance in air movement and only affects its immediate vicinity. As will be shown later, those skilled in the art are wrong in this regard. Therefore, in the prior art, much attention has not been paid to the shape and position of the suction port. There seems to have been no scientific research on this agenda.

  Therefore, a mixed ventilation method using a primary blowout jet sucked to the ceiling by the Coanda effect and a suction flow sucked to the floor by the Coanda effect is known in the field of air conditioning, and is widely used because of its thermal characteristics. Nevertheless, in the prior art, the influence of the “slope that obstructs the exchange air flow” generated by this method has not yet been solved, and this effect deteriorates the decontamination performance. Is not practically seen.

  The present invention firstly relates to a method for ventilating a room by mixing using a blowout primary jet sucked to the ceiling by the Coanda effect and a suction flow sucked to the floor by the Coanda effect. More specifically, the present invention relates to a blower positioned in a manner that fits a pre-treated (heated, cooled, decontaminated, humidified, dehumidified, etc.) primary air jet into a “processed” side wall near the ceiling. A blower mounting angle directed to the ceiling (or parallel to the ceiling) so that the primary blown jet is sucked to the ceiling surface by the Coanda effect through the surface [in the average direction of each part of the blown primary jet It relates to a type of ventilation method that blows out at an average angle at the blowout surface. At the same time, the low-quality air flow is sucked at a speed equivalent to the flow velocity of the primary jet through a substantially vertical suction surface placed in the vicinity of the floor of the room so as to fit on the same processing side wall. In this way, it is ensured that air is sucked in along the suction flow in the vicinity of the floor, and that the suction flow is sucked to the floor surface by the Coanda effect in a substantially horizontal direction and parallel to the floor surface. The

  The inventors have conducted demonstration experiments and computer simulations on a ventilation system that uses mixing of a blowout primary jet drawn to the ceiling and a suction flow drawn to the floor. And as a result of these, this type of ventilation in a closed room has the property that it rises from the floor and follows an upwardly inclined path towards the outlet, passing through the residential zone, “disturbing the flow of replacement air” It was shown to cause the occurrence of “slope”. This phenomenon is well explained in the prior art and scientific papers cited above, but no solution has been found to remove it.

  In its simplest form, the purpose of the ventilation method of the present invention is further to mean the average blow speed (Vs) [average value at the blow face of each part of the primary air jet] is the average suction speed (Va) [through the suction face. [Vs <Va], which is smaller than the average value of the velocity of each part of the sucked air flow. When the inventor performed airflow measurement on an independent apparatus for removing air contamination in a room by using the computer model by using the computer model, the phenomenon of the above-mentioned “slope that disturbs the exchange airflow” It has been discovered that if implemented, it is reduced or eliminated to a significant degree.

  Shown in FIG. 1 is a conventional room (3) that is not ventilated. The ambient air (A) in the room (3) is filled with a large amount of contaminating particles (4), which are considered as aerosols, and are subject to the action of their own weight and gravity due to the sedimentation action (5). It is drawn to the height of the floor (6). For this reason, the contaminating particles (4) move at a slow vertical settling velocity (5), come into contact with the floor (6) and gradually accumulate in a thin bottom layer (Cc) of highly contaminated air. To do. If the contamination particles (4) contained in the room (3) are inspected, the contamination particles (seen in the form of floating contamination aerosol (4a)) contained in most of the room (3) ( The proportion of 4) is very dangerous for the resident (1) but small. Under the influence of gravity, the movement of the thermal convection coming from the floor (6) and the Brownian motion, another part of the pollutant particles (4) is in the form of a kind of cloud of a very thick accumulated polluted aerosol (4b) Accumulate in the thin bottom layer (Cc) of air contaminated with air. The concentration of the contaminating aerosol (4b) that accumulates inside this very polluted thin air bottom layer (Cc) has a progressive shape as it approaches the floor (6). However, most of the contaminating particles (4) found in the room (3) are sticky particles (4c), and after falling for a long time under the action of gravity, the molecules contained in these contaminating particles and It sticks to the floor (6) through the Van der Waals force resulting from the interaction with the floor (6). The living zone (2) is a part of the room (3) where the resident (1) is usually seen. In general, this is defined as a space extending between a face recessed 50 cm (cm) from the wall having the window (51) and a face recessed 20 cm from the other plurality of walls (140). This zone also extends 180 cm above the floor (6).

  When the resident (1) moves around in the room (3), a disturbance and turbulence of the same height as the floor (6) are generated, and a rising type turbulence (8) is born, Some of the accumulated contaminating particles (4b) and sticky particles (4c) located at the level of the floor (6) at the bottom of the living zone (2) are returned to a floating state. A phenomenon similar to the development of cumulonimbus type dense clouds in the meteorological system occurs at a smaller scale in the room (3). The floor (6) is heated in a non-uniform manner by light rays (53) coming from the luminaire (54) located on the ceiling (20) or from the window (51). This creates a strong upward convection motion at the height of the floor, which causes a somewhat larger amount of accumulated contaminated aerosol (4b) and sticky particles (4b) located on the floor (6). Is returned to the floating state. These contaminated aerosols (4b, 4c) rise to the top of the residential zone (2) and reach the occupant's (1) mouth and the resident's breathing zone (9). These contaminated aerosols (4b, 4c) returned to the floating state by such a phenomenon result in an increase in the concentration of the floating pollutant aerosol (4a). Contaminated aerosols are inhaled by the resident (1) in the room (3), which in turn increases the risk of the resident (1) suffering from microbial contamination by the biological factors of the air, which can be caused by various types of diseases (aspergillosis, It may also lead to the development of lung disorders, etc.).

  According to the prior art, mixed ventilation using the suction flow (21) sucked to the floor (6) by the Coanda effect (C) as well as the primary blowing jet (19) sucked to the ceiling (20) by the Coanda effect (C). The method is widely used. Reference is made to FIGS. These figures show how a prior art ventilation method using a built-in ventilation device (65) incorporated in the building in which the room (3) is housed was implemented. In the prior art, the primary air jet (19) previously treated (ie, heated, cooled, decontaminated, humidified, dehumidified, etc.) by the built-in ventilation system (65) is passed through the wall outlet (10) into the room (3 ) And the outlet is formed in the first vertical “processing” wall (52), is fitted into the vertical processing wall (52), and is close to the ceiling (20). It opens into the room (3) through the blowing surface (Ss) placed in the shape. The primary jet (19) is directed to the ceiling (20) (or generally parallel to the ceiling as shown in FIGS. 2 and 3), and the blowing attachment angle (Is) [of the primary jet (19) The average direction of the blowout surface (Ss) in the average direction of each part is directed, and the blowout primary jet (19) is sucked to the ceiling (20) surface by the Coanda effect (C). At the same time, the low-quality air flow (21) is sucked out through the suction port (11) at a speed equivalent to the flow velocity of the primary jet, and the suction port enters the room through a substantially vertical suction surface (Sa). It is open and this surface is formed on the vertical processing wall (52), and it fits on the same processing side wall (52) but is placed close to the floor (6) of the room (3) Yes. This ensures that the air (A) is sucked out at the level of the floor (6) via the suction flow (55) that flows collectively at the height of the floor. 55) is substantially horizontal and parallel to the floor (6) surface in the form of being attracted to the floor by the Coanda effect. The primary jet (19) moves outside the living zone (2) between the surrounding area (63) of the living zone (2) and the surface on which the jet (19) is sucked (consisting of a ceiling). As a result, the primary air jet (19) travels along a long path and is mixed with a large amount of ambient air (A) before reaching the living zone (2). This mixing results in dilution between low quality air and fresh air, leading to decontamination, which is the purpose of air conditioning and ventilation. This form of arrangement is rated as being most comfortable for the resident (1) in terms of temperature. The built-in ventilation system (65) has an external air treatment unit (73), which is typically placed on the roof of the building. The illustrated unit has a combined blow / suction assembly that is used in a conventional manner in the field of air recycling. The unit further includes one or more centrifugal or other type (67, 71) fans, a heating unit (70), an air filter (to serve to move air (A) and establish an air flow regime. 69), and a mixing chest (68) for mixing the recycled air with fresh outside air. The air treatment unit (73) is connected to a diffusion duct (72), which opens through a blowout port (10) installed in the wall, and thus has been treated in advance as a primary jet. (19) is sent out through the blowing surface (Ss). The suction duct (66) couples a suction port (11) installed in the wall to the inlet of the air treatment unit (73), and reduces the reduced quality and / or contaminated suction flow (21) from the room (3). Exhaust.

FIG. 2 shows the system of air flow obtained in the prior art inside a room (3a), which is said to be “short” and whose length (L) is less than about 3 times the width ( l ) (from Muller). Copy). A “loop-like” encircling flow (B1) occurs. As can be seen, in the prior art (if no specific precautions are taken), the living zone (2) is lifted from the floor (6) and inclined upwards toward the blowout surface (Fs). A “slope that disturbs the exchange air flow (Fs)” appears. As can be seen, this “inclination (Fs) hindering the exchange air flow” rising from the floor (6) causes the accumulated (4b, 4c) contaminants at the level of the sticky floor to accumulate. The aerosol is resuspended and the result is the same as described with reference to FIG. These contaminants (4b, 4c) increase the amount of aerosol contaminant (4a) floating in the ambient air (A) of the room (3) on the way up. Thus, in the prior art, in the “short room (3a)” ventilated by the mixture of sucked jets (19), the presence of this “inclination (Fs) hindering the exchange air flow” The risk of microbial contamination increases.

FIG. 3 shows the system of air flow obtained in the prior art (reproduced by Muller) inside a room (3a), which is said to be “long” and whose length (L) is longer than about 3 times the width ( l ). Indicates. As can be seen, the “long” room (3b) is divided into a plurality of air zones (Z1, Z2, Z3, etc.) by the flow of air. The first “closed” loop (B1) of air is similar to that obtained in the “short” room shown in FIG. 2 and is made in the first zone (Z1). This consists of a blown primary air jet over the ceiling (20), going down the inclined branch (77), passing through the living zone (2) in the central part (3b) of the “long” room, and then Return to the suction surface (Sa) near the floor (6) in the horizontal direction. In addition to the effect of the “inclination (Fs) hindering the exchange air flow” rising from the floor (6), in addition to the (air) first loop (B1) and the opposite side of the room (3) In the continuous zone (Z2, Z3) between the wall (50) located, other air “closed” loops (B2, B3, etc.) forming vortices (12a, 12b) also extend. These “closed” loops of air (B2, B3, etc.) pass through the living zone (2). This second phenomenon occurs because the primary jet (19) has separated early from the ceiling (20) in the separation zone (14) due to the large length (L) of the room (3). After this, the blown-out primary jet (19) is no longer attracted to the ceiling (20) and can be said to be free. As a result, the velocity inducing action (30a, 30b, etc.) occurs more continuously and the formation of secondary vortices (12a, 12b) occurs. And when secondary vortices are formed, air “closed” loops (B2, B3, etc.) are created in the secondary zones (Z2, Z3, etc.). The suspended (4a) contaminated aerosol (4a) located in the secondary vortex zone (12a, 12b) of the “closed” loop of air (B2, B3, etc.) is trapped and built-in ventilation / air decontamination system ( 65) and is held away from the blowing surface (Ss) and the suction surface (Sa). Nonetheless, suspended polluted aerosol (4a) is separated into different air “closed” loops (B1,...) Via exchange zones (17a, 17b) that exist in steady state when room (3) is in equilibrium. B2, B3, etc.) can move between each other. In terms of removing floating contaminated aerosol (4a), the decontamination process is slow and therefore the room (3) is not optimally treated throughout the space. Furthermore, as will be appreciated, the increased number of upward movements due to the air loops (B1, B2, B3, etc.) will cause contamination to accumulate and stick to the same height as the floor (6). The rate at which aerosols (4b, 4c) are returned to a floating state increases, thereby increasing the risk that the resident (1) in the living zone (2) will suffer microbial contamination. In order to reduce the risk of biological contamination through the air, it is preferable to implement a ventilation method using a mixture of a plurality of sucked-up jets in the “short room (3a)”.

  FIGS. 4a and 4b are intended to greatly reduce and eliminate the effect of the “slope (Fs) impeding replacement air flow” shown in FIGS. 2 and 3 in the “short” room (3a). FIG. 5 shows characteristic means implemented by the method. The method of the present invention is a general ventilation method using mixing of a primary jet (19) sucked to the ceiling (20) by the Coanda effect (C) and a sucked flow (21) sucked to the floor (6). Implement the principle (shown in FIG. 2). However, according to the method of the present invention, the average blowing speed (Vs) [the average value of the velocity at the blowing face (Ss) of each part of the primary air jet] is sucked through the average suction speed (Va) [suction face (Sa). It is epoch-making in that it is made to be smaller than the average value of the velocity in each part of the air flow [Vs <Va].

These means implemented by the present invention are simple, but still eliminate the effect of “slope (Fs) impeding the exchange air flow (Fs)” and have a great effect in terms of air pollution removal (which could not be realized by the prior art). It leads to the result of providing. This effect can be verified analytically by first using Bernoulli's theorem and referring to FIG. 5a.
FIG. 5 is a detailed view showing a part of the moving airflow (vf) that is constantly moving. For simplicity, assume that air (A) is a completely incompressible fluid and is only affected by the force of gravity. The minute amount (da) of air moving in this moving airflow (vf) will be considered.
The minute amount (da) of air belonging to the flow (vf) has a variable area (s), a variable speed (V), a variable length (dx), a mass (dm), and a local pressure (P).

It is assumed that the air concentration (ρ) is constant. The acceleration due to gravity is constant and equal to (g).
In a first order approximation, the total mechanical energy Et of a minute amount (da) of air is the sum of the minute amount of kinetic energy Ec, the minute amount of pressure potential energy Epγ, and the gravitational potential energy Epe,
About the minute amount of kinetic energy Ec,
Ec = 1 / 2dm × V ²
For the small amount of pressure potential energy Epγ,
Epγ = P × s × dx = P × dm / ρ
And about gravity potential energy Epe,
Epe = g × z × dm
It is determined.

In a first order approximation, the total amount of mechanical energy Et in a minute amount of air (da) is preserved throughout the mobile fluid flow (vf).
Thus, the following equation is derived per unit mass of air moving through the entire moving airflow (vf).
^{V 2/2 + P / γ} + g × z = constant
This is Bernoulli's theorem and is valid throughout the moving airflow (vf) in the room (3) if there is no energy loss (discussed later).

Please refer to FIG. What will now be described is a demonstration of “contrast”, whereby the absence of “inclination (Fs) hindering the exchange air flow” in the room (3) shown in FIG. The need for means [i.e., average blowout speed (Vs) must be less than average suction speed (Va)] is indicated.
If there is no “inclination (Fs) hindering replacement air flow” action, all the flow coming from the blowout surface (Ss) will join the suction surface (Sa). When the following large amount of moving airflow is considered, it is considered that all the flows are continuous and that no flow is divided into a plurality of sub-jets throughout its length. The moving airflow means that the average air velocity is (Vs), the pressure is (Ps), and the height is (h). It goes to the blowing surface (Sa) where the suction pressure is (Pa) and the height (h) is 0. When applied to the airflow surface (Ss) and the suction surface (Sa) in the form of equations for the air flow, Bernoulli's theorem is established,
^{Vs 2/2 + Ps / γ} + g × h = Va 2/2 + Pa / ρ ( Bernoulli equation) is derived.

  It is important to emphasize that Bernoulli's theorem can be used in the form of equations just because of this property that the flow (vf) is not divided. It is only in this case that the entire flow (vf) coming from the blowing surface (Ss) reaches the suction surface (Sa) and vice versa. This is not the case if there is a “slope that disturbs the flow of replacement air (Fs)”.

However, as is clear, air is blown into the room (3) through the blowing surface (Ss) and is sucked out through the suction surface (Sa), so that Ps> Pa needs to be satisfied.
Next, it is assumed that Vs> Va. Under these conditions, as you can see, the left side of the equation considered earlier (Bernoulli's equation) is always larger than the right side of the equation. Inevitably, it can be concluded that the equations obtained by Bernoulli's theorem are not satisfied. This can be expressed as follows.
That is,
[There is no slope (Fs) effect in the room (3) that obstructs the exchange air flow] and [Vs> Va].
Then
⇒ Bernoulli's theorem equated for the blowing surface (Ss) and the suction surface (Sa) is not satisfied,
It becomes.

Bernoulli's theorem is satisfied by the mathematical logical transformation of the above equation.
⇒ [There is an action of inclination (Fs) that disturbs the exchange air flow in the room (3)], or [Vs <Va],
It becomes.

Thus, the method of the present invention, that is, [Vs <Va], is a necessary condition for the absence of the action of “slope (Fs) disturbing the exchange air flow (Fs)” in the room (3).
In fact, the true conditions are even more severe. In the continuous flow of moving airflow (vf), a part of the total amount of mechanical energy is external force such as friction against the wall of the room (3), especially the primary air jet (19) and the air in the room (3) (A ) Will be dissipated under the action of induction between. Dissipation occurs between both ends of the moving airflow (vf), and a friction loss head ΔH is generated. By applying Bernoulli's theorem to moving airflow (vf) and taking into account the effects of head loss,
^{Vs 2/2 + Ps / γ} + g × h = Va 2/2 + Pa / ρ + ΔH ( Bernoulli principle considering the head loss)
It becomes.
Furthermore, if there is no “slope that obstructs the exchange air flow (Fs)” in the room (3),
(Va ² −Vs ² ) / 2 = (Ps−Pa) / ρ + g × h−ΔH
Va ² −Vs ² = 2 × [(Ps−Pa) / ρ + g × h−ΔH]
Therefore,
Va <(Vs ² + 2 × [(Ps−Pa) / ρ + g × h]) ^1/2
It is necessary to become.

Therefore, the following condition is derived.
Vs <Va <(Vs ² + 2 × [(Ps−Pa) / ρ + g × h]) ^{1/2 If the} average suction speed (Va) is smaller than the blowing speed (Vs), “the slope that disturbs the exchange air flow ( Fs) ”is created, and Bernoulli's theorem can no longer be applied in the form of equations. If the average suction speed (Va) is larger than the blowing speed (Vs), the phenomenon of “slope (Fs) disturbing the exchange air flow” is weakened and tends to gradually approach 0 (zero). The higher the average suction velocity (Va) exceeds the blowout velocity (Vs), the easier the induction phenomenon develops, and as a result, the air is mixed with the induced primary jet (19) and the loss head ΔH increases. To do. The following second restriction, namely Va> (Vs ² + 2 × [(Ps−Pa) / ρ + g × h]) ^1/2
Beyond this, the flow of the Coanda effect (C) is no longer created, and what is seen is mainly turbulent movement.

Of course, while the above explanation is a demonstration based on a very simplified assumption, it is important to adjust the average suction speed (Va) relative to the average blowing speed (Vs), i.e. One can understand these still simple methods [Vs <Va] recommended by the invention.
FIG. 4a shows, in a highly schematic form, the results obtained by the inventor through experiments and using computer tools for airflow simulation. Shown in this figure is a system of airflow showing the movement of air (A) in room (3). Room (3) in this figure is similar to the room shown in FIG. 2, but here the method of the invention is implemented in relation to the ratio of the average blowing speed (Vs) and the average suction speed (Va). From these results obtained from the simulation and measurement of the air flow for the prototype device in which the means are implemented, the means recommended by the present invention are implemented in the room (3), i.e. the average blowing. Velocity (Vs) [average value of velocities at the blow-out surface (Ss) of each part of the primary air jet (19)] is expressed as an average suction speed (Va) [suction surface of each part of the suction airflow (21) ( If the average value in Sa) is smaller than [Vs <Va], the effect of “priority (Fs) hindering replacement air flow” in the prior art shown in FIG. 2 is greatly reduced (and eliminated). It is shown that. The main cause of this “inclination (Fs) hindering the exchange air flow” is the induced force generated by the blown primary jet (19). Interaction of these two types of motion by causing the induced force produced by the blown primary jet (19) to be lost by the induced force produced by the suction flow (21) and directed towards the floor (6). By the balance, the suction air flow (21) can be maintained in a state of being sucked to the floor by the Coanda effect (C). The dilution of the room (3) is closely related to the air velocity used at the outlet from the blowing surface (Ss) and at the inlet of the suction surface (Sa). The object of the present invention is not to improve the dilution efficiency (almost 100%) but to improve the decontamination characteristics. If there is no “slope that obstructs the exchange air flow (Fs)”, the rising of the polluted aerosol (4) to the living zone (2) due to the air flow phenomenon will not occur completely. As a result, biological contamination (4) is mainly Unless it is confined to a thin bottom layer of highly contaminated air (Cc) and does not come into contact with the breathing zone (9) of the resident (1), the possibility that the resident (1) will suffer biological contamination Lower.

  FIG. 4b shows in room (3) in terms of an efficient blowing surface (Sse) and an efficient suction surface (Sae) for implementing the means of the invention in a built-in ventilation system (65). It is a perspective view of the form of arrangement | positioning which should be implemented. The blow hole (10) and the suction hole (11) for wall installation used in the built-in ventilation system (65) are generally equipped with a blow grill (60) and a suction grill (61). These grilles occupy the blowout surface (Ss) and the suction surface (Sa), and are configured to partially block the airflow. These grills (60, 61) usually comprise a metal plate provided with a large number of holes, or a metal frame (81) having a plurality of directional slats (83), and / or corresponding holes (10, 11). It can be any other means of blocking, but still allow air to pass through. The effective area (Sse, Sae) of the grill (60, 61) means the surface of the gap, and the gap is [the velocity (Vs, Va) / pressure (Ps, Pa) of the fluid passing through the area]. It has a uniform air flow action for a pair consisting of Generally, a commercial grill has a specification indicating its effective area. Otherwise, the effective area can be measured experimentally. In FIG. 4b, the blow grill (Ss) is shown with an indication of the effective blow surface (Sse). A suction grill (Sa) is also shown with an indication of an effective suction surface (Sae). As can be seen, the effective blowing surface (Sse) of the room (3) is definitely larger than the effective suction surface (Sae). For this reason, [Vs <Va] can be reliably established. As can be seen, the blowout primary jet (19) coming from the blowout surface (Ss) is sucked firmly to the ceiling (20) by the Coanda effect (C). Similarly, the suction flow (55) on the floor of the sucked air flow (21) is also sucked firmly to the floor (6) by the Coanda effect (C). In room (3), there is no “inclination (Fs) hindering replacement air flow”.

Shown in FIG. 5b are the numerical simulation conditions used in the air flow diagram obtained for the prototype of the PLASMAIR ^™ stand-alone air decontamination device (101). The device was operated in the room (3) according to various effective blow-off ratios (RS) in a form to which the present invention was applied. The term “blowing ratio (RS)” indicates the ratio of the effective blowing surface (Sse) to the effective suction surface (Sae). The numerical simulation was performed under the following conditions. The conditions are: room length (L) = 4 meters (m), room width (l) = 3 m, room height (h) = 2.5 m, and air flow rate: Qv = 1 hour 500 It is called cubic meters (m ³ / h).

  As shown in FIG. 5b, there are a series of various observation points (P = P1, P2,... P8) located 2 cm above the axes (X), (Y), (Z) and the floor (6). Used in simulation. The numerically calculated magnitude (velocity in the Y direction) indicates the local numerical average value of the vertical component of the airflow velocity observed at each observation point (P = P1, P2,... P8). Are spaced from the front surface (165) of the device (101) by different distances (d = d1, d2,..., D8). This is the average value of the vertical component of the airflow velocity in a volume made up of nine independent three-dimensional nodes, which are used for simulation purposes and are in contact with each other. It is arranged around each simulation observation point P. The device (101) is placed in the center of the processing wall (52). The AK energy model was used to establish air movement based on the Naviestoke equation. Although the flow conditions of interest are turbulent, the Naviestoke equation certainly applies because the volume of travel space investigated is much larger than the Kolmogorov scale (molecular type description) for fluid particles. So far, this numerical simulation method has been regarded as reliable, and no counterexample is yet known when the flow velocity is kept below Mach13. This is clearly the case here. Given the simple structure of room (3), the selected node type was hexagonal. Room (3) was created with a total number of nodes of 500,000. This number is much larger than the number usually considered sufficient to support these types of studies (3000). As can be seen by the definition of the velocity in the Y direction (P), this parameter can be positive or negative and clearly defines the ascending or descending motion of the air (A) in the room (3). It represents.

  Therefore, if the Y-direction velocity (P) is a positive number, it means that the mean flow component of the air velocity near the observation point (P) placed 2 cm above the floor is inclined upward. It means that. In this situation, it can be inferred that there is mainly an upward flow from the floor near the observation point (P). From this, it can be concluded that there is a high possibility that the “slope (Fs) impeding replacement air flow” starts from the observation point.

Conversely, if the Y velocity (P) is a negative number, it means that the mean flow component of the air velocity near the observation point (P) is inclined downward. . From this, it can be concluded that there is almost no possibility that the “slope that disturbs the exchange air flow (Fs)” starts from the observation point.
The table in FIG. 5c shows the results obtained by simulation. In the table, the first column shows simulation observation points (P = P1, P2,... P8). In the second row (shaded), the apparatus (101) is set so that the blowing ratio (RS = 0.57) [the ratio of the effective blowing area (Sse) to the effective suction area (Sae)] is smaller than 1. Related to the situation. In other words, this form is not within the range of conditions imposed by the present invention. As predicted by the theoretical analysis described above, under these conditions, the formation of “slope (Fs) hindering the exchange air flow” may occur.

The third column (shaded) corresponds to a condition in which the apparatus (101) is adjusted so that the blowing ratio (RS) is 1. This is a restrictive form for the existence of “slope (Fs) impeding replacement air flow” as predicted by the theoretical analysis described above.
The second and third columns are shaded to further illustrate conditions that are outside the range recommended by the present invention.

Finally, the fourth column (not shaded) relates to the situation where the device (101) has been adjusted so that the blowing ratio (RS = 1.43) is greater than 1. That is, these conditions are within the conditions imposed by the present invention.
Under the condition of the second row (Va = 0.57Vs, that is, Va <Vs), as can be seen, the local numerical average of the vertical component of the air velocity is the observation point (P4 to P7) far away from the device (101). Is a positive number. This means that there is upward air movement in a part of the room (3) far away from the device (101). It would be reasonable to conclude that “the slope (Fs) hindering the replacement air flow” rises from far away in the room towards the outlet (110). Under such conditions, there is an upward flow from the floor (6), so the use of the device (101) as an air decontamination system is extremely inefficient.

  The local numerical average of the vertical component of the airflow velocity is a positive number at observation points (P5 to P7) far from the device (101), as can be seen in the same manner under the condition of the third row (Va = Vs). is there. This means that there is upward air movement in the part far away from the device (101) in the room (3), as described above. It can be concluded that the “slope (Fs) hindering the replacement air flow” rises from far away in the room toward the outlet (110). Even under these conditions, the use of the device (101) as an air decontamination system is very inefficient due to the presence of upflow from the bed (6).

  In contrast, under the condition of the fourth row (Va = 1.43 Vs, that is, Va> Vs), as can be seen, the local numerical average of the vertical component of the air velocity is, conversely, at all observation points (P1 ~ P8) is always a negative number. It can be concluded that there is no “slope hindering replacement air flow (Fs)” rising in room (3). Under these conditions, the use of the device (101) as an air decontamination system is extremely efficient because there is no upflow from the bed (6).

  The removal capability of the method of the present invention for the phenomenon of “slope (Fs) impeding replacement air flow” can be seen more clearly from the graph of FIG. 5d. This graph shows the velocity in the Y direction according to the position of the various simulation points (P1, P2,..., P8) on the floor (6) in FIG. The parameter plot of (P) is shown. As can be seen, the existence of a “slope that obstructs the exchange air flow (Fs)” for a specific blowout ratio (RS) is represented by a Y-direction velocity curve that passes through the shaded zone (Y-direction velocity> 0). ing. From this numerical demonstration, the conditions recommended by the present invention, namely Va> Vs, or equivalently, the condition that the effective blowing surface (Sse) is larger than the effective suction surface (Sae) have been previously determined by those skilled in the art. It can be concluded that it is effective in removing the “slope that obstructs the exchange air flow (Fs)” that has always been considered to occur.

The principle of the method of the present invention can address the shortcomings of the prior art and, as an effective configuration, the principle can be implemented in PLASMAIR ^™ stand-alone air decontamination device (101). The mobile stand-alone air decontamination device (101) of the present invention is shown in FIG. In this figure, in order to implement a ventilation method by mixing using a blow-out primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C), the apparatus has a short room. (3a). The device (101) has a vertical trunk means (103) placed vertically, the trunk means being substantially parallel to the first vertical treatment wall (52) of the short room (3a) to be treated. Designed to be placed in close proximity. The trunk means (103) has a lower first end (104) for suction, which is close to the floor (6) of the short room (3) but spaced apart It is placed in shape. The trunk means (103) further has an upper second end (105) for blowing, the upper second end being placed at a higher position. The upper second end is designed to be close to the ceiling (20) but spaced apart and located above the short room (3a). The device (101) is equipped with means (106) for moving air (A). These means are arranged inside the vertically placed trunk means (103). As a result, a pressure difference (ΔP = Ps−Pa) is created between the blowing upper end (105) and the suction lower end (104), and the air (A) outside the apparatus can move. . These further serve to move the air (Ac, Ad) inside the trunk means (103). The lower suction end (104) of the trunk means (103) extends to form a surface effect intake nozzle (118) with its tip on the floor (6). This intake nozzle is placed opposite the floor (6) of the short room (3a). The suction nozzle (118) is provided with a suction port (111), and the suction port is provided with a suction surface (Sa) close to the floor (6). The suction surface (Sa) has a substantially vertical entrance portion (109). This suction surface (Sa) is composed of an annular space, but is shown in a shaded form for further clarity. This is shown in the lower right of FIG. 6 in a stretched and unfolded form. This suction surface (Sa) serves to suck air (A) in the suction flow (55) at the height of the floor (6), and the suction flow is sucked to the floor (6) by the Coanda effect (C). In parallel with the floor in the horizontal direction. The suction flow (55) can be seen in more detail in FIG. 6e. The blowing upper end (105) of the trunk means (103) extends, and the tip is a surface effect blowing nozzle (129) adjacent to the ceiling (20). The blowout upper end (105) is designed to be in a position close to the ceiling (20). A blowing port (110) is provided in the upper portion. A porous blowout surface (Ss) is seen at the blowout port (110), the blowout surface is substantially front-facing, and the side faces are side edge edges (119a, 119b, 119c, 119d) of the blowout port (110). They are arranged in contact. This is shown further enlarged in the upper right of FIG. The outlet (110) has a primary air jet (19) directed upward (or horizontally) to reach the ceiling (20) [or parallel to the ceiling] over the entire blowing surface (Ss). Work to generate. The orientation is so that the blown-out primary jet (19) is attracted to the ceiling (20) by the Coanda effect (C). Decontamination means (127) for acting on the contaminating particles (4a, 4b, 4c) contained in the air (A) is operated inside the trunk means (103), an intake nozzle. (118) and the blowing nozzle (129). These means divide the cross section (S) of the longitudinal trunk means (103) inside, contaminated air (Ac) is at least partially decontaminated in the upstream pollution zone (113) and air (Ad). It is forced to pass between the downstream zone (114). Further, the decontamination device (101) is characterized by an effective suction surface (Sae) (shown in the lower right) of the suction surface (Sa) of the suction nozzle (118), which is a blowout surface (Ss) of the blowout port (110). ) Is smaller than the effective blowing surface (Sse) (shown in the upper right). Thus, the average blowing speed (Vs) [average value of air jet velocity at the blowing surface (Ss)] is smaller than the average suction velocity (Va) [average value of suction air flow velocity at the suction surface (Sa)] [ Vs <Va].

  Please refer to FIG. As can be seen, the pre-treated blown primary jet (19) can be drawn to the ceiling (20) surface by the device (101). Thereafter, the blown primary jet (19) reaches the separation point (14) on the opposite side of the short chamber (3a), so that the primary jet (19) can flow along the opposite wall (50). Finally, the blown primary jet (19) is returned to the floor (6), sucked up by the Coanda effect (C) at the floor position, and taken into the continuous suction flow (21) sucked to the floor (6). It is.

  Reference is made to FIGS. 6a and 6b. The internal and external parts of the stand-alone air decontamination device (101) can be seen in more detail. The trunk means (103) is accommodated in the outer casing (126) of the device (101). During operation of the device (101), contaminated air (Ac) coming from the room (3) passes through the surface effect intake nozzle (118) located at the floor (6), and the tip of the nozzle facing the floor (6) is The suction lower end (104) of the trunk means (103). There is a suction pressure (Pa). The contaminated air (Ac) then passes through a coarse pre-filter (120) where large air components (131) that may interfere with the normal operation of the device (101) are removed. The contaminated air (Ac) then passes through the noise reduction system (122). The noise reduction system functions to control noise propagating through air or a solid. This system consists of a plurality of parallel baffles (107, 108), which are placed in two groups on either side of the air drive means (106) to prevent noise from propagating in air or solids. Jiru. As a preferred configuration, the air drive means (106) is a centrifugal type fan. Thereafter, the contaminated air (Ac) always passes through the decontamination means (127), where it is at least partially decontaminated. The decontaminated air (Ac) reaches the upper blowing end (105) and is then discharged through the blowing port (110). The decontaminated air (Ac) is released from the device (101) through the outlet (110), where there is an outlet pressure (Ps). The actuation means of the device (101) can be started or stopped using an on / off system (124). The device (101) is equipped with four wheels (125) fixed to the lower end of the device. For this reason, the device (101) is movable. The device can easily move the door from one room (3) to another. By means of a system (123) for adjusting the volumetric flow rate from the device, it is possible to adapt the flow rate to the decontamination requirements and the size of the room (3).

  Refer to FIG. As can be seen, a short chamber (3a) is obtained by combining the blown primary jet (19) pretreated and sucked by the Coanda effect (C) with the suction flow (21) sucked by the Coanda effect (C). It is possible to cover the entire living zone (2). Referring to FIG. 3, as can be seen, according to the Coanda effect (C), according to the movable stand-alone air decontamination device (101) installed in a short room (3a) and set to operate according to the present invention, The mixed ventilation of the room (3a) can be performed by using the blown-out primary jet (19) sucked and the suction flow (21) sucked by the Coanda effect (C), and the “inclination (disturbing the exchanged air flow ( Fs) ”can be controlled.

  Refer to FIG. As can be seen, according to the device (101) of the present invention, in the vicinity of the floor (6), it is located in the immediate vicinity of all the suspended pollutant aerosol (4a) and a thin bottom layer (Cc) of highly contaminated air. It is possible to inhale all the accumulated contaminated aerosol (4b, 4c) and to do this gradually as the aerosol settles (the phenomenon described with reference to FIG. 1).

Contaminated aerosols (4a, 4b) contained in the suction flow (55) in a position close to the suction flow (21) are continuously directed toward the suction flow (21) by the suction induction effect (Ias). The suction flow is sucked to the floor (6) and removed through the suction port (111), and then subjected to a decontamination process.
Thus, in the apparatus (101) of the present invention, the amount of contaminating particles can be reduced by continuously discharging the settled contaminating particles (4b, 4c).

As a result, the speed at which the floor (6) becomes filthy is much slower and therefore less frequent cleaning of the room (3) is required.
Furthermore, there is also an effect that the influence caused by the contamination particles being moved upward again (by convection effect or turbulence applied to the accumulated contamination particles (4b, 4c)) is greatly reduced.

Furthermore, the effects caused by floating or accumulated (4b, 4c) sedimenting contaminant particles, usually due to the presence of the “Float that impedes replacement air flow (Fs)” phenomenon, are practically eliminated.
FIG. 7 is a diagram generally showing the decontamination effect of a movable stand-alone air decontamination device (101) installed in a short room (3a) and adjusted to operate within the scope of the present invention. . As can be seen, this decontamination can be done in a variety of ways on the top of the room (Cs), the bottom of the room (Ci) and the contaminating particles (4) located in the middle of the room (Cm). Is called.
Both the blowout primary jet (19) and the suction flow (21) are sucked by the Coanda effect (C), which covers the entire living zone (2) of the short room (3a). All contaminating particles (4) found in the air (A) in the short room (3a) are exposed to the decontamination process.

In the upper part (Cs) of the room, the pollutant particles (4) in the form of floating pollutant aerosol (4a) are blown into the primary jet (19) by the blowout induction effect (Iss) toward the ceiling (20). It is continuously sucked upward. These contaminant particles are then carried longitudinally along the opposite wall (50) and eventually drawn into the suction air stream (21).
In the middle part (Cm), the contaminating particles (4) arise mainly from emissions associated with the presence of residents in the living zone (2). The concentration of these contaminant particles is very low. Furthermore, they are continuously moved towards the bottom of the room (Ci) by the gravitational sedimentation effect (5).
Finally, in the lower part of the room (Ci), the pollutant particles (4) in the form of floating pollutant aerosol (4a) are sucked into the air flow (21) by the blowing induction effect (Iss) toward the floor (6). Is continuously sucked downwards.
In addition to the lower suction induction effect (Ias) caused by the suction primary jet (21), there is no “slope (Fs) that obstructs the replacement air flow”, so that a thin layer of highly contaminated air (Cc) The situation where the incoming accumulated contamination particles (4b) and sticky particles (4c) rise to the upper part of the room (Cs, Cm) can be avoided.

As a result, the contaminating particles (4) of each part of the room (Cs, Cm, Ci) are quickly discharged into the suction air stream (21) and eventually enter the device (101), with reference to FIG. Removed under the described conditions. An actual decontamination test conducted using PLASMAIR ^™ stand-alone air decontamination device (101) showed its effectiveness in decontaminating room (3). The performance was close to that of laminar flow, but the cost was only one-tenth of that.

  Next, a first effective embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be described with reference to FIGS. 6d, 6e and 8b. In this variant, the intake nozzle (118) is of the suction type on the floor (6). In other words, the lower first suction wall (132) is seen at the suction port (111), and the lower first suction wall is substantially in contact with the floor (6) or as shown in FIG. 6d. The floor (6) itself is composed. The suction port (111) has an upper second suction wall (133), and the upper second suction wall is formed in a substantially horizontal direction formed by a part (134) of the base (137) of the intake nozzle (118). It has a lip shape. For this reason, the vertical suction surface (Sav) is free and is constituted by an annular vertical open surface (136) between the base (137) and the floor (6) of the intake nozzle (118). That is certain. This ensures that the air flows from the flat part (138) and is sucked in at the level of the floor in the form of a flow (55) sucked into the floor, which is in the short room (3a). It tapers according to the suction force coming from all three other walls (50, 140, 144) far away from the longitudinal treatment wall (52). Furthermore, the suction surface (Sav) in the vertical direction of the suction type intake nozzle (118) on the floor (6) is not obstructed. As a result, a developed surface equivalent to the effective suction surface (Sae) shown in the lower right of FIG. As can be seen, the effective suction surface (Sae) is smaller than the effective blowing surface (Sse) (shown in the upper right of FIG. 8b) at the blowing surface (Ss) of the blowing port (110). The form of arrangement characteristic of this first variant simultaneously improves the floor effect with respect to suction and a thin bottom layer (Cc) of highly contaminated air, along with “inclination that disturbs the exchange air flow ( Fs) ”can be limited.

  A second effective embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIGS. 8a to 8d. As can be seen in FIGS. 8a and 8b, the blowout upper end (130) is positioned at a distance greater than 170 cm from the floor (Ds). This distance is for a room with a standard ceiling height of about 250 cm. By following this distance (Ds), the air flow system described with reference to FIG. 6 is actually generated. As can be seen in FIGS. 8c and 8d, the porous flow surface (Ss) of the outlet (110) is provided with a lever (167) for directing the outlet airflow (164) forming the outlet primary jet (19). A mechanically controlled means (163) is provided. By the flow directing means (163), the blowing attachment angle (αs) from the outlet (110) [the angle of the blowing primary jet (19) on the blowing surface (Ss) with respect to the horizontal plane (H) of the blowing airflow (164), The average value] can be adjusted to ensure that the angle is in the range of approximately 20 ° to 70 °. Figures 8e and 8f show the importance of this second configuration configuration recommended by the present invention. These figures are all side views of the device (101) placed in a short room (3a), showing the same features as described with reference to FIG. 5b. Numerical simulations were used to examine in detail the effects caused by adjusting the blowing attachment angle (αs) of the blowing nozzle (110). FIG. 8e corresponds to αs = 20 °. FIG. 8f corresponds to αs = 70 °. As can be seen, in the recommended adjustment range (20 ° <αs <70 °), if the configuration of the present invention is fulfilled, the phenomenon of “slope (Fs) impeding replacement air flow”. Is controlled. FIG. 8g corresponds to αs <20 °. FIG. 8h corresponds to αs> 70 °. As can be seen, out of the recommended range (20 ° <αs <70 °), even if other configurations of the present invention have been realized, the “slope (Fs) impeding replacement air flow (Fs)” The phenomenon appears. If αs> 70 °, a multi-zone phenomenon (Z1, Z2) occurs with the formation of a plurality of air loops (B1, B2) as described for the “long” room with reference to FIG. A slope (Fs) that obstructs the replacement air flow appears. If αs <20 °, only the appearance of “slope that disturbs the exchange air flow (Fs)” is observed.

  A third effective embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIG. 9b. The effective blowing surface (Sse) of the blowing port (110) is at least 20% larger than the effective suction surface (Sae) of the intake nozzle (118). Furthermore, the volume flow rate (Qv) of the air drive means (106) is such that the average blowing speed (Vs) [average value of the discharge jet velocity at the porous blowing face (Ss)] is greater than 0.79 m / s. It is adjusted to the form. With this arrangement, the average suction speed (Va) [average value of the suction air flow speed at the suction surface (Sa)] is at least 20% greater than the average blowing speed (Vs) (Va> 1. 2 × Vs). If these particular arrangement configurations of the present invention are met, the phenomenon of “slope (Fs) impeding replacement air flow” is controlled.

  In contrast, FIG. 9a corresponds to the results obtained by numerical simulation for Vs <0.79 m / s and Va <1.2 × Vs. As can be seen, during numerical simulations, when outside the previously recommended threshold range, the multi-zone (Z1, Z2) phenomenon and multiple air loops as described for the “long” room with reference to FIG. Both (B1, B2) occur, and in addition, a “slope (Fs) that obstructs the exchange air flow” appears. Even in the feature of the arrangement form of the third modified example, the effect of “the inclination (Fs) hindering the exchange air flow” can be limited.

  A second preferred embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIG. 10a. In this second embodiment, the blowing nozzle (129) having a porous blowing surface (Ss) is made wider than the average width of the vertically placed trunk means (103). This spread is measured in a manner perpendicular to the longitudinal symmetry plane (PV) of the device extending perpendicular to the front portion (165) of the device (101). Moreover, it measures in the form which becomes parallel to the 1st process wall (52) of a vertical direction. Thus, the porous blowing surface (Ss) is larger and the blowing ratio (RS) to the effective suction area (Sae) whose size does not change is increased. Therefore, the blowing speed (Vs) with respect to the suction speed (Va) is much lower. This significantly reduces the effect of “slope hindering replacement air flow (Fs)”.

  A particular implementation form of this second preferred embodiment will be described with reference to FIGS. 15a and 15b. The blowing nozzle (129) has means (157) for widening its lateral dimensions. These means are composed of at least one [preferably configuration, two as shown in FIGS. 15a and 15b] porous and flexible cylindrical blowout portions (159). Are arranged on both sides of the upper part of the trunk means (103). These are arranged so as to be perpendicular to the longitudinal symmetry plane (Pv) of the device (101). These porous flexible cylindrical blowout portions (159) hang vertically as shown in FIG. 15a unless the air drive means (106) is in operation. However, if the air drive means (106) is in operation, it develops in the horizontal direction under the action of pressure (Ps) as shown in FIG. 15b. These are provided with a movable blowing surface (Ss), and the blowing surface is substantially in the horizontal direction at the development position (161).

  The porous flexible tubular blowout portion (159) can be made in the shape of a finger of a glove using a reinforced woven material. The glove finger-shaped fabric material is covered with a protective adhesive strip extending along the jet generation line. Then, a sealing cover ring (eg, oil close) is applied to the outside of the finger shape of the glove. The adhesive protective strip is then withdrawn. Thus, most of the finger shape of the glove is covered with a sealing material that is impermeable to air. However, there is no sealing material on the longitudinal surfaces along the jet generation line in each of the porous flexible cylindrical blowing portions (159), and air passes through these surfaces. Can do. Thus, a porous surface (Spa) is formed on a part of the finger-shaped surface of the glove, which part occupies the jet generation line. The remaining surface (SE) of the other part is airtight. Thus, when the porous flexible cylindrical blowout portion (159) is deployed, the blowout primary jet (19) is emitted along the jet generation line, that is, parallel to the ceiling (20). The balloon surface (Ss) is realized. As an effective configuration, an expansion / contraction reinforcement (170) is used, and one end of the expansion / contraction reinforcement is placed inside a porous flexible cylindrical blowing portion (159), and the other end Can be fixed to the vertical trunk means (103). The expansion / contraction reinforcement means (170) is useful for increasing the range in which each porous flexible cylindrical blowing portion (159) protrudes when deployed (161). As a preferred configuration, the stretch reinforcement means (170) is deployed by the pressure inside the device (101). It can also be folded using a spring.

  This realizes the device (101) that is relatively narrow when not in operation. This device can easily pass the door. On the contrary, in operation, the blowing surface (Ss) can be developed over a width approximately equal to the width of the room (3). Therefore, it is possible to realize a blowout flow that covers the room (3) in a form that is developed over the entire length of the room (3). This leads to more effective decontamination.

  A third preferred embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIG. 10b. The porous blowing surface (Ss) has a front blowing surface (Ssf), and the blowing surface (Ssf) extends sideways to form side blowing surfaces (Sslg, Ssld). These surfaces (Sslg, Ssld) ) Is formed on the side wall of the blowing nozzle (135) placed opposite to the side wall (140, 144) of the room (3). With this arrangement, the effective blowing surface (Sse) can be increased, and the side zone of the room (3) located along the side walls (140, 144) can be processed more effectively. In addition, it contributes to better removal of the “inclination (Fs) hindering replacement air flow” effect.

  A fourth preferred embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be described with reference to FIG. The suction-type intake nozzle (118) on the floor has an upper side wall (139), and the upper side wall extends downwardly beyond the vertical trunk means (103), but the vertical trunk means (103 ) Wider than average width. This spread is measured in a form perpendicular to the longitudinal symmetry plane (PV) of the device perpendicular to the front part (165) of the device (101). Further, the side walls (141) of the intake nozzle (118) are separated from each other.

  A fifth preferred embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIGS. 10a, 10b, 12, 13a and 13b. The intake nozzle (118) has a tulip-shaped protruding lower part (143), and the lower part is placed facing the floor (6). Numerical simulations have also shown that this configuration provides a better removal of the “slope that disturbs the exchange air flow (Fs)” effect.

  A sixth preferred embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIG. The longitudinal extent (DL) (size) of the average cross section of the longitudinal trunk means (103) measured in the plane of symmetry (PV) of the device (101) is the longitudinal extent (DLS) of the intake nozzle (118). ) Is smaller. These two spreads are measured in parallel to the plane of symmetry (PV) of the device perpendicular to the front part (165) of the device.

  A seventh preferred embodiment of the stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIGS. 13a and 13b. The vertical trunk means (103) has a trunk portion (147), the length of which is adjustable. This adjustable trunk portion (147) can in particular consist of a bellows (149). With such an arrangement, the height of the porous blowing surface (Ss) can be adjusted according to the height (h) of the room (3). Thus, the device (101) can be used in a room (3) with a different structure and, as shown in FIG. It can be drawn to the ceiling (20). By shortening the duct portion (147), the device (101) can be passed through the door of the room (3) when the device (101) is in the contraction mode (151) as shown in FIG. 13a.

  An eighth preferred embodiment of a stand-alone air decontamination device (101) recommended by the present invention will be shown with reference to FIGS. 14a and 14b. The device (101) has an auxiliary intake nozzle (155), which is formed in the front part of the trunk means (103). The auxiliary intake nozzle (155) is placed at about half the height (about 1 meter from the floor). The auxiliary intake nozzle (155) is open in the trunk means (103) upstream of the means (127) for removing contaminating particles, ie in the upstream contamination zone (Ac). This arrangement allows air to be decontaminated in the vicinity of the auxiliary intake nozzle (155). A resident (2) wearing contaminated particles (4) emits a floating contaminated aerosol (4a). When this resident is admitted, he is laid down almost horizontally on the bed, and the occupant's airway is located at a height of about 1 m. Using this preferred embodiment with an auxiliary intake nozzle (155), it directly handles all emissions of floating contaminated aerosol (4a) emitted by residents of the zone (Cm) as shown in FIG. It becomes possible to do.

Objects and effects of the present invention The main objects and effects of the present invention are considered to be always accompanied by a ventilation method in the prior art by a mixed use of a blowing flow sucked to the ceiling and a suction flow sucked to the floor by the Coanda effect. The phenomenon of “slope (Fs) hindering replacement air flow” has been reduced or eliminated.

The second effect of the present invention is to reduce the effect that the contaminated particles settled in the room are moved upward again.
The third effect of the present invention is to gradually inhale the floating aerosol and the aerosol accumulated in a thin layer of highly contaminated air in the vicinity of the floor as these aerosols accumulate.

The fourth effect of the present invention is to reduce the amount of contaminating particles sticking to the floor, and to reduce the necessary frequency of room cleaning accordingly.
A fifth effect of the present invention is to reduce the concentration of contaminating aerosol floating in the living zone of the room occupied by the room occupant.
The sixth effect of the present invention is to reduce the onset of illness caused by biological contamination caused by air in the room.

The seventh effect of the present invention is the use of a mixed jet that draws near laminar performance in terms of decontamination of the room, but the cost of implementation is almost one-tenth of that. To provide a ventilation system.
The eighth effect of the present invention is to provide an air decontamination system that can achieve high cleanliness and is movable.

The ninth effect of the present invention is to enable the rapid introduction of means into a building that is not equipped to cope with the occurrence of biological contamination. This is equally applicable to medical use in the home, combating infectious diseases, providing civil protection, and producing pharmaceuticals and / or foods.
The tenth effect of the present invention is to provide a movable device that is well suited for the purpose of capturing and removing air-contaminating particles in the vicinity of the floor and preventing them from returning to a suspended state. And

The eleventh effect of the present invention is to increase the speed of decontamination of a mixed-ventilated room.
Industrial application of the present invention The present invention makes it possible to optimize the process of decontaminating a room and removing air pollutants therein at a lower cost. Thus, the present invention has industrial applicability in any type of closed structure requiring air decontamination. The present invention can be used in a non-consumable form for health, food industry, research, transportation, livestock industry, pharmacy, school, etc.

A particularly suitable application is air decontamination of insurance facilities to protect patients and staff from secondary contamination risks in a hospital environment. This relates to providing protection against infection risks such as SARS (severe acute respiratory syndrome) type in hospitals.
Another use is a temporary response to the specific effects of conventional ventilation leading to risks from air-contaminated infections carried in air-conditioning systems at work, public, and home facilities. This relates to local protection in the room of the building to be ventilated against problems of allergies and / or secondary infections (sick house syndrome) resulting from the air conditioning of the building.

Mention may be made of use for passenger ship transport or passenger air transport.
Furthermore, mention may also be made of the use in industries where local biological risks related to the production of pollutants are seen. This is true for the pharmaceutical and food industries. It is also related to the Microbiology Laboratory.
Another application applies to the protection of livestock (birds, pigs, etc.) kept at high density, especially to keep these in good health on farms where access is restricted (for selective breeding) Is.

Another use is civil protection in the case of terrorist attacks with biological weapons.
A broader use is to limit the risk of transmission between customers and / or staff in cafeterias and restaurants.
Another use is in the control of infectious disease risk in nurseries, schools, and small but large facilities.

Finally, one use is the protection of staff and visiting patients in dental clinics, animal hospitals, etc.
The scope of the invention should be considered in terms of the following claims and their legal equivalents, rather than from the examples described above.

It is a schematic side view which shows the phenomenon in which aerosol settles in an unventilated room and returns to a floating state. FIG. 6 is a schematic side view showing the air flow distribution in a “short” room that is mixed and ventilated (without special precautions) with a blowout primary jet drawn to the ceiling and a suction flow drawn to the floor. (Muller copy of diagram) FIG. 6 is a schematic side view showing the air flow distribution in a “long” room with mixed ventilation (without special precautions) using a blowout primary jet drawn to the ceiling and a suction flow drawn to the floor. (Muller copy of diagram) (A) In accordance with the teachings of the present invention, by computer simulation of a ventilator (of the type shown in FIG. 2) operating in a mixed-ventilated room using a primary blow-off jet drawn to the ceiling and a suction flow drawn to the floor. It is a schematic side view which shows distribution of the obtained air flow. (B) a schematic perspective view showing the distribution of air flow obtained by computer simulation of a ventilator (of the type shown in FIG. 4 (a)) operating in a ventilated room in accordance with the teachings of the present invention; Fig. 4b is an enlarged view of the side wall effective suction surface and the effective blowing surface for the ventilator of Fig. 4a in order to compare their relative sizes as well as the average suction speed and average blowing speed. (A) Analytical explanation about the effect realized by the present invention, and a schematic diagram showing a part of the moving airflow that enables the removal of the “slope that disturbs the exchange air flow”. (B) It is a figure which shows the numerical simulation conditions of the air flow made for the prototype of the independent apparatus for air pollution removal of this invention. (C) It is a numerical table | surface which shows the result obtained by the numerical simulation calculation shown in FIG. 5b. (D) It is a graph which shows the result obtained as shown in FIG. 5c. FIG. 5 is a schematic side view illustrating the air flow obtained by computer simulation of a stand-alone decontamination device operating in a room in accordance with the teachings of the present invention. (A) It is sectional drawing to which the stand-alone type decontamination apparatus of this invention was expanded. (B) It is the perspective view which expanded the independent type decontamination apparatus of this invention. (C) is a plan view showing the operation of the device of FIG. 6d with a depiction of the lines of air flow produced by the device in the horizontal direction. (D) It is the schematic side view which expanded the intake nozzle of the independent type air pollution removal apparatus of FIG. 6, Comprising: The figure which shows the effect | action which the said nozzle exerts on the contamination particle | grains which float and the particle | grains located in the height of a floor | bed is there. (E) It is a schematic perspective view which shows the apparatus of this invention with the suction flow. FIG. 3 is a schematic side view showing the operating principle of an air decontamination device operating in a room and the effect on the aerosol in accordance with the teachings of the present invention. (A) It is sectional drawing of the blowing nozzle of the independent type decontamination apparatus of FIG. 6, Comprising: It is a figure which shows the position with respect to the ceiling of the said nozzle. (B) It is a perspective view of the blowing nozzle of the independent type decontamination apparatus of FIG. 6, Comprising: It is a figure which shows the position with respect to the ceiling of the said nozzle. (C) It is a side view which shows the influence by adjusting the attachment angle of the blowing performed by the apparatus of this invention. (D) It is another side view which shows the influence by adjusting the attachment angle of the blowing performed by the apparatus of this invention. (E) It is another side view which shows the influence by adjusting the attachment angle of the blowing performed by the apparatus of this invention. (F) It is another side view which shows the influence by adjusting the attachment angle of the blowing performed by the apparatus of this invention. (G) It is another side view which shows the influence by adjusting the attachment angle of the blowing performed by the apparatus of this invention. (H) It is another side view which shows the influence by adjusting the attachment angle of the blowing performed by the apparatus of this invention. (A) It is a side view which shows the importance of the modification recommended by this invention regarding adjustment of suction speed and blowing speed. (B) It is another side view which shows the importance of the modification recommended by this invention regarding adjustment of suction speed and blowing speed. (A) It is a perspective view which shows the detail of 1st preferable embodiment of the blowing nozzle of this invention. (B) It is a perspective view which shows the detail of 2nd preferable embodiment of the blowing nozzle of this invention. FIG. 2 is a perspective view showing details of one preferred embodiment of the intake nozzle of the present invention. Figure 2 is a perspective view of one preferred embodiment of the thin, vertically placed trunk means of the present invention. (A) It is a perspective view which shows one preferable embodiment of the trunk means of the vertical installation which can adjust the height of this invention. (B) Another perspective view of one preferred embodiment of the height-adjustable vertical trunk means of the present invention. FIG. 7A is a perspective view of one preferred embodiment of the apparatus of FIG. 6 having an auxiliary intake nozzle of the present invention. (B) Another perspective view of one preferred embodiment of the apparatus of FIG. 6 having an auxiliary intake nozzle of the present invention. (A) It is a perspective view which shows one preferable embodiment of the apparatus of FIG. 6 which has a stretchable blowing nozzle of this invention. (B) Another perspective view of one preferred embodiment of the apparatus of FIG. 6 having the extensible blow nozzle of the present invention.

Claims (18)

In the mixed room (3) using the blowout primary jet (19) sucked to the ceiling (20) by the Coanda effect (C) and the suction flow (21) sucked to the floor (6) by the Coanda effect (C) A ventilation method,
a) A pre-treated primary air jet (19) (heated, cooled, decontaminated, humidified and dehumidified, etc.),
(I) through a blowout surface (Ss) positioned so as to fit into the processing side wall (52) in the vicinity of the ceiling (20),
(Ii) A blowing attachment angle (or parallel to the ceiling) directed to the ceiling (20) so that the primary blowing jet (19) is attracted to the ceiling (20) by the Coanda effect (C). Is) [average angle at the blowout surface (Ss) in the average direction of each part of the blowout primary jet (19)]
Step to blow into room (3), and then
b) Low quality suction air flow (21)
(I) through a substantially longitudinal suction surface (Sa) placed in the vicinity of the floor (6) of the room (3) in a form that fits into the same processing side wall (52)
(Ii) Ensure that the suction flow (A) is sucked in the vicinity of the floor (6), the flow (55)
・ Almost horizontally,
A step of sucking at a speed equivalent to the flow velocity of the primary jet (19) in the form of being sucked to the floor (6) by the Coanda effect parallel to the floor (6) surface;
Furthermore, the feature is
c) Average blowing speed (Vs) [average value of the velocity of each part of the primary air jet on the blowing surface (Ss)] is the average suction speed (Va) [suction surface of each part of the suction air flow (21) ( [Vs <Va] which is smaller than the average speed of Sa)].
The ventilation method. a) Make the effective blowing surface (Sse) larger than the effective suction surface (Sae),
A method of ventilating a room by mixing using a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C) according to claim 1 . The room (3) for carrying out the mixed ventilation method according to claim 1, wherein the blowout primary jet (19) sucked by the Coanda effect (C) and the suction flow (21) sucked by the Coanda effect (C) are used. A stand-alone air decontamination device (101) for
a) [Vertical trunk means (103) arranged in the vertical direction [to be placed in a form substantially parallel and close to the first vertical processing wall (52) of the room (3) to be processed] And
(I) a lower first end (104) for suction placed in the lower part of the trunk means in a spaced manner in close proximity to the floor (6) of the room (3);
(Ii) an upper second end portion (105) for blowing that is placed at a higher position so as to come to the upper position of the room (3) in close proximity to the ceiling (20) Said trunk means (103) comprising:
b) Drive means (106) for moving the air (A), which is disposed inside the vertically placed trunk means (103), and has a blowing upper end (105) and a suction lower end (104). Drive means for allowing air (A) to move inside and outside of the trunk means (103) by generating a positive pressure (ΔP) between
c) a surface effect intake nozzle (118) located at the floor (6) and extending beyond the lower suction end (104) of the trunk means (103), wherein the short chamber (3) The suction port (111) is placed near the floor (6) at the same time as facing the floor (6) of the
(I) having a suction surface (Sa) of the suction port in a substantially vertical direction;
(Ii) Realizing suction of air (A) in the suction flow (55) at the height of the floor (6),
・ Almost horizontally,
A surface effect intake nozzle that is parallel to the floor (6) and sucked to the floor (6) by the Coanda effect;
d) [to be placed close to the ceiling (20)] a surface effect blowing nozzle (129) on the ceiling, extending beyond the blowing upper end (105) of the trunk means (103), A blowing port (110) is formed in the upper part, and the blowing port is
(I) having a porous blowing surface (Ss) disposed substantially in a front direction and having a side surface in contact with a side end edge (119a, 119b, 119c, 119d) of the blowing port (110);
(Ii) generating a primary air jet (19) from the entire blowout surface (Ss), the jet being directed upward or horizontally [to reach the ceiling (20) or parallel to the ceiling], A surface effect blowing nozzle for allowing the blowing primary jet (19) to be sucked to the ceiling (20) by the Coanda effect (C);
e) Contaminant particles contained in the air (A) (by filtering and / or discarding) (i) Inside the trunk means (103), placed between the intake nozzle (118) and the blowing nozzle (129) And
(Ii) The section (S) of the trunk means (103) in the vertical position is divided so that the contaminated air (Ac) is upstream contaminated zone (113) and the air (Ad) is at least partially decontaminated 114), and a decontamination means forcing the trunk means to pass through the trunk means,
Furthermore, the feature is
f) The effective area (Sae) of the suction surface (Sa) of the intake nozzle (118) is smaller than the effective area (Sse) of the blowing surface (Ss) of the blowing port (110), and the average blowing speed (Vs) [air jet (19) The average value of the velocity at the flow surface (Ss)] is smaller than the average suction velocity (Va) [the average value of the velocity of the suction air flow (21) at the suction surface (Sa)] [Vs <Va]. ,
The decontamination device (101). a) Firstly, the intake nozzle (118) of the device has a suction type on the floor (6), i.e. has a suction port (111), the suction port being
(I) a lower first suction wall (132),
・ Is it actually in contact with the floor (6)?
-Or having a lower first suction wall consisting of the floor (6) itself,
(Ii) having an upper second suction wall (133) formed by a portion (134) of the base (137) of the intake nozzle (118);
(Iii) The suction surface (Sav) in the vertical direction of the suction port (111) is free, and an annular vertical opening surface (136) between the base (137) and the floor (6) of the intake nozzle (118). )),
(Iv) acts to suck air in the form of a flow (55) that is sucked into the floor (6) at the height of the floor, the flow being tapered towards the suction force, in the longitudinal direction of the room (3) Flowing from a planar portion (138) extending from the other three walls (50, 140, 144) opposite the processing wall (52), in combination with it,
b) Secondly, the vertical suction surface (Sav) of the suction nozzle (118) on the floor (6) is smaller than the effective blow surface (Sse) of the blow surface (Ss) of the blow port (110). ,
The mixed ventilation method for a room according to claim 1, wherein the blowout primary jet (19) sucked by the Coanda effect (C) and the suction flow (21) sucked by the Coanda effect (C) are further characterized. A stand-alone device (101) for air decontamination of a room (3) according to claim 3, for implementation. a) The upper edge (142) of the porous blowing surface (Ss) is placed at a distance (Ds) greater than 170 cm from the floor (for a room with a standard ceiling height (h) of about 250 cm). In combination with it,
b) Mechanically adjustable one for directing the blown airflow (164) forming the blown primary jet (19) on the porous blowout surface (Ss) of the blowout port (110)
The directing means (163) is provided, and the blowing attachment angle (αs) from the blowing nozzle (129) [the average value of the angles of the primary jet on the blowing surface (Ss) with respect to the horizontal plane] is the horizontal plane (H ) To be within a range of 20 ° to 70 ° with respect to
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. a) First, the effective area (Sse) of the blowing surface of the blowing nozzle (129) and the air drive means (106) are the average blowing velocity (Vs) of the blowing nozzle (129) [the porosity of the discharge jet velocity] Average value on the blowout surface (Ss)] is 0.
The dimensions are determined to be [Vs> 0.79 m / s] value greater than 79 m / s, and in combination therewith,
b) Secondly, the effective area (Sse) of the air outlet surface of the air outlet (110) is at least 20% greater than the effective area (Sae) of the air inlet surface of the intake nozzle (118), and the average suction speed (Va) [suction The average value of the flow velocity of the flow (21) at the porous suction surface port (Sa)] is at least 20% larger than the average blowing velocity (Vs) [Va> 1.2 × Vs],
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The blowing nozzle (129) on which the porous blowing surface (Ss) is mounted extends upward at the tip of the vertical trunk means (103), but the average width of the vertical trunk means (103) Being made more widely [measured in a form perpendicular to the longitudinal symmetry plane (PV) of the device perpendicular to the front part (165) of the device (101)],
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The porous blowout surface (Ss) has a front blowout surface (Ssf), the front blowout surface extends sideways and becomes a side blowout surface (Sslg, Ssf), and these surfaces (Sslg, Ssld) are Formed on the side wall (135) of the blowing nozzle (129) placed opposite to the side wall (140, 144) of the room (3);
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The intake nozzle (118) extends in the upper side wall (139), and the upper side wall extends downward beyond the longitudinal trunk means (103), but the average of the vertical trunk means (103). Wider than the width [measured in a form perpendicular to the longitudinal symmetry plane (PV) of the device perpendicular to the front portion (165) of the device (101)],
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The intake nozzle (118) has a tulip-shaped overhanging lower part (143), the lower part being placed so as to reach the floor (6);
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) as claimed in claim 4. The longitudinal extent (DL) (size) of the average part of the longitudinal trunk means (103) measured in the plane of symmetry (PV) of the device (101) is the longitudinal extent (DLS) of the intake nozzle (118). , Both [measured in parallel to the longitudinal symmetry plane (PV) of the device perpendicular to the front portion (165) of the device (101)],
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The auxiliary intake nozzle (155) is further included.
a) is placed in the front part of the trunk means (103),
b) placed at about half the height (about 1 meter from the floor) and
c) open into said upstream contamination zone (Ac) upstream of the means (127) for removing contaminant particles into the trunk means (103);
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The vertically placed trunk means (103) has a trunk portion (147), the length of which is adjustable (specifically by means of bellows (149)) and the porous blowing surface (Ss). The height can be adjusted according to the height (h) of the room (3), so that the primary jet (19) is sucked to the ceiling (20) by the Coanda effect (C) and yet the device (101) can be passed through the door of room (3),
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The blowing nozzle (129) has means (157) for widening the lateral dimension thereof, and the blowing surface (Ss) can be enlarged in the lateral direction.
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 3. The blowing nozzle (129) has means (157) for widening its own lateral dimensions, said means (157) being at least one (preferably two) porous flexible It is composed of a cylindrical balloon part (159), and the cylindrical balloon part is
a) Arranged in the upper part (105) of the trunk means (103) in a shape that is lateral to the trunk means (103) and perpendicular to the longitudinal symmetry plane (Pv) of the device (101) Has been
b) A movable blowout surface (Ss) is provided by developing under the action of pressure (Ps), and the blowout surface (Ss) is substantially horizontal in the deployed position (161);
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). 15. A stand-alone device (101) for removing air contamination in a room (3) according to claim 14. The porous flexible cylindrical blowing portion (159)
a) having a porous surface (Spa) over a part of the surface, forming a blowing surface (Ss) and allowing the blowing primary jet (19) to be emitted;
b) having an airtight surface (SE) over another part of the surface;
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 15, for the purpose. It has at least one stretch reinforcing material (170), and one end of the stretch reinforcing material is placed inside a porous flexible cylindrical blowing portion (159), and the other end is Being fixed to the vertical trunk means (103),
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). A stand-alone device (101) for removing air contamination in a room (3) according to claim 15, for the purpose. The expansion of the expansion / contraction reinforcing means (170) is performed by pressure inside the device (101),
2. The mixed ventilation method according to claim 1, further comprising: a blowout primary jet (19) sucked by the Coanda effect (C) and a suction flow (21) sucked by the Coanda effect (C). 18. A stand-alone device (101) for removing air contamination in a room (3) according to claim 17.