JP2010054076A - Microparticle diffusing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a microparticles diffusing device for sufficiently supplying microparticles to a living space. <P>SOLUTION: The microparticle diffusing device includes first supply openings 10a-10c distributing the first airflow to an upper part of an indoor living space, a second supply opening 10d disposed at a lower part of the first supply openings 10a-10c for distributing the second airflow to a lower part of the first airflow, and a microparticle generating device 17 for generating the microparticles. The microparticles generated by the microparticle generating device 17 is distributed indoors, and the concentration of the microparticles distributed from the first supply openings 10a-10c is lower than that of the microparticles distributed from the second supply opening 10d. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fine particle diffusing apparatus that sends out fine particles such as ions and diffuses them into a room.

  A conventional fine particle diffusing apparatus is disclosed in Patent Document 1. In this fine particle diffusing device, a blower fan is provided in a housing having a blower opening at the front, and the blower fan and the blower outlet are connected by a blower path. A fine particle generator for generating ions that are fine particles is disposed in the air blowing path.

  The airflow generated by the blower fan flows through the airflow path, and the airflow including the microparticles generated by the microparticle generator is sent out from the outlet. The air flow path is formed so as to extend in the left-right direction, and the airflow sent from the air outlet extends in the left-right direction to diffuse the fine particles into the living room. Thereby, positive ions and negative ions can be supplied into the room to sterilize the floating bacteria in the room.

  Further, Patent Document 1 discloses a configuration having a ventilation path that is divided vertically (FIG. 20). According to this configuration, the fine particles spread out in the vertical direction from the outlet and are sent out. Thereby, microparticles are diffused in the living room from the upper part to the lower part of the living room.

Japanese Patent No. 3797993 (pages 4 to 18, FIGS. 1 and 20)

  However, according to the above-described conventional fine particle diffusion device, fine particles having substantially the same concentration are sent to the living space in the living room and above the living space, so that sufficient fine particles such as ions are not supplied to the living space. There is a case. In particular, on a floor or the like where the ceiling of the living room is high, fine particles such as ions diffuse to the upper part where no people are present, and the fine particles in the living space are significantly reduced. For this reason, there existed a problem which cannot fully acquire effective effects, such as disinfection and relaxation by the microparticles in living space. The same problem occurs when fine particles such as fragrances other than ions, deodorants, insecticides, and bactericides are generated by the fine particle generator.

  An object of this invention is to provide the microparticle diffusion apparatus which can fully supply microparticles to living space.

  In order to achieve the above object, the present invention provides a first air outlet for sending a first air flow upward, and a second air outlet arranged below the first air outlet and sending a second air current below the first air flow. An outlet and a microparticle generator for generating microparticles are provided, the microparticles generated by the microparticle generator are sent out, and the concentration of microparticles sent out from the first outlet is sent out from the second outlet. It is characterized by being lower than the concentration of fine particles produced.

  According to this configuration, the first airflow is sent upward from the upper first air outlet, and the second airflow is sent below the first airflow from the lower second air outlet. The second air stream includes fine particles generated by the fine particle generator, and the fine particles are supplied to an indoor living space. The first air stream contains fine particles having a lower concentration than the second air stream and is sent out above the living space. Thereby, the 1st air current becomes an air curtain and the diffusion to the upper part of the minute particles contained in the 2nd air current is prevented. Thereby, many of the fine particles generated by the fine particle generator are supplied to the living space, and effects such as sterilization and relaxation can be obtained. In addition, the case where the 1st airflow whose density | concentration of a microparticle is 0 is blown out from a 1st blower outlet is also included.

  Further, the present invention is characterized in that in the fine particle diffusing apparatus having the above-described configuration, the fine particles are not sent out from the first outlet. According to this configuration, the second air outlet opens at the end face of the duct provided with the microparticle generator, and the microparticles generated by the microparticle generator are sent out from the second air outlet via the duct.

  Further, the present invention is characterized in that, in the fine particle diffusing apparatus having the above-described configuration, the wind speed of the first air stream is made faster than the wind speed of the second air stream. According to this configuration, the second air stream having a low wind speed is sent to the living space, and fine particles are supplied to the living space without letting a person feel the wind. Further, the air curtain is reliably formed by the first air flow.

  The present invention is also characterized in that the second air stream is adjacent to the first air stream in the fine particle diffusing apparatus configured as described above. According to this configuration, the microparticles included in the second air stream are attracted by the airflow below the first airflow, and the microparticles are supplied far into the room.

  Moreover, this invention divides | segments a 1st blower outlet up and down in the microparticle diffusion apparatus of the said structure, and the wind speed of the 1st airflow blown out from the lower part is blown from the upper part of the 1st blower outlet. It is characterized by being faster. According to this configuration, the wind speed of the first air stream, which is faster than the second air stream, gradually increases as it goes upward. Thereby, the turbulence of the airflow is suppressed.

  Further, the present invention is characterized in that, in the fine particle diffusing apparatus having the above-described configuration, the second air flow is enlarged and sent out from the second outlet. According to this structure, the 2nd blower outlet spreads in the up-down direction, for example in a trumpet shape, and the microparticles | fine-particles of a 2nd airflow are diffused up and down.

  Further, the present invention is characterized in that, in the fine particle diffusing apparatus having the above-described configuration, the second air flow is enlarged and sent in the left-right direction from the second air outlet. According to this structure, the 2nd blower outlet spreads in the left-right direction, for example in a trumpet shape, and the microparticles | fine-particles of 2nd airflow are spread | diffused right and left.

  Further, the present invention is characterized in that, in the fine particle diffusing apparatus having the above-described configuration, the first air flow is enlarged and sent in the left-right direction from the first air outlet. According to this structure, the 1st blower outlet spreads in the left-right direction, for example in a trumpet shape, and forms the air curtain by a 1st airflow reliably.

  Moreover, the present invention is characterized in that, in the fine particle diffusing apparatus having the above configuration, the left and right widths of the first air outlet are sufficiently larger than the height of the first air outlet. According to this structure, the air curtain by a 1st airflow is formed reliably.

  The present invention also includes a microparticle generator that includes a microparticle generator that generates microparticles, and that sends out microparticles from a blowout port by driving a blower fan, wherein a blower path that connects the blower fan and the blowout port is provided. It has a plurality of division passages which divide the blower outlet up and down, and the wind speed of the air current which flows through the upper division passage is larger than the wind speed of the air current which flows through the lower division passage.

  According to this configuration, when the blower fan is driven, the airflow flows through the plurality of divided passages to be rectified, and the fine particles generated by the microflow generator are included and delivered from the outlet. At this time, the airflow at the upper part of the air outlet becomes an air curtain, and the fine particles contained in the lower airflow are supplied to the lower part of the living room.

  According to the present invention, in the fine particle diffusing device having the above-described configuration, the fine particle generating device is arranged in the lower divided passage. According to this configuration, the fine particles are included in the low-speed airflow sent from the lower part of the air outlet, and the fine particles are supplied to the living space without letting a person feel the wind.

  Further, the present invention provides the fine particle diffusing device having the above-described configuration, wherein the air blowing path extends upward from the air blowing fan and bends forward, and extends from the vicinity of the air blowing fan to the air outlet to form the divided passage. It is a feature.

  According to this structure, the airflow which distribute | circulates a ventilation path distribute | circulates upwards, bends ahead, and is sent out from a blower outlet. When the airflow flowing upward in the air flow path bends forward, the airflow is directed upward due to inertia, easily separated from the lower wall, and easily along the upper wall. Thereby, the airflow flowing through the upper part of the air flow path becomes faster than the airflow flowing through the lower part. At this time, if the airflow peeled off from the lower wall increases, an airflow in the opposite direction is generated on the lower wall side, and the airflow is disturbed. The plurality of divided passages are provided in the vicinity of the blower fan, and the length of the wetting edge (the length of the circumference surrounding the cross section) of the flow path section is increased by the divided passages. Thereby, since the influence of the viscosity is larger than the inertia on the flow, the airflow is likely to follow along the wall surface of the divided passage. Therefore, airflow turbulence is suppressed by reducing airflow separation.

  Further, in the fine particle diffusing apparatus having the above-described configuration, the air flow path has an upper wall and a lower wall having curved portions, and extends upward from the blower fan and bends forward. The curved surface portion of the upper wall The dividing passage is formed by extending from the upstream side to the air outlet from a position connecting the center of the lower wall and the center of the curved surface portion of the lower wall.

  According to this structure, the airflow which distribute | circulates a ventilation path distribute | circulates upwards, bends forward in a curved surface part, and is sent out from a blower outlet. When the airflow flowing upward in the air flow path bends forward, the airflow is directed upward due to inertia, easily separated from the lower wall, and easily along the upper wall. Thereby, the airflow flowing through the upper part of the air flow path becomes faster than the airflow flowing through the lower part. At this time, if the airflow peeled off from the lower wall increases, an airflow in the opposite direction is generated on the lower wall side, and the airflow is disturbed. The plurality of divided passages are provided on the upstream side of the position connecting the center of the curved surface portion of the upper wall and the center of the curved surface portion of the lower wall. It becomes easier to follow along the wall. Thereby, the separation of the airflow is reduced and the turbulence of the airflow is suppressed.

  In the fine particle diffusing device having the above-described configuration, the blower fan is formed of a cross flow fan, and the lower divided passage is arranged closer to the inner peripheral side of the blower fan exhaust port than the upper divided passage. It is characterized by that. According to this configuration, the airflow exhausted from the inner peripheral side of the exhaust port of the blower fan composed of the cross flow fan is guided to the lower divided passage, and the airflow exhausted from the outer peripheral side is guided to the upper divided passage. The inner peripheral side of the exhaust port indicates the front in the rotational direction of the rotor blade, and the outer peripheral side indicates the rear in the rotational direction of the rotor blade. Thereby, the wind speed of the airflow which distribute | circulates an upper division | segmentation channel | path becomes faster by centrifugal force.

  Further, the present invention provides the fine particle diffusing apparatus having the above-described configuration, wherein the divided passage has a vertically widened portion that widens the downstream side with respect to the upstream side and widens the airflow in the vertical direction, and is perpendicular to the airflow of the vertically widened portion. A simple cross section is formed in a slit shape extending in the left-right direction.

  According to this configuration, the airflow flowing through the divided passage gradually spreads in the vertical direction by the up and down widening portion, and is spread and sent up and down from the outlet. The cross-sectional shape of the upper and lower widened portion is formed in a slit shape that spreads left and right, and the upper and lower walls are long in the left-right direction. For this reason, the area which the airflow which distribute | circulates a ventilation path | route contacts the upper and lower wall surface of each division path becomes large. Thereby, an air current can be easily extended along the upper and lower walls of a division | segmentation channel | path, and can be spread in an up-down direction, without making it peel from a wall surface.

  In the fine particle diffusing apparatus having the above-described configuration, the split passage may have a left-right widened portion on the downstream side of the up-and-down widened portion that widens the downstream side with respect to the upstream side and widens the airflow in the left-right direction. It is a feature. According to this configuration, the airflow flowing through the divided passage spreads in the up-down direction at the up-and-down widened portion, spreads in the left-right direction at the left-right widened portion, and spreads out from the blowout port in the up-down and left-right directions.

  In the fine particle diffusing device having the above-described configuration, the left and right widened portion includes a plurality of narrow passages obtained by dividing each of the divided passages in the left-right direction, and each of the narrow passages has a downstream side with respect to the upstream side. It is widened to the left and right. According to this structure, the airflow which distribute | circulates a ventilation path | route by each narrow channel | path which divided | segmented the division path into right and left becomes large in contact with the left and right wall surface of a narrow channel. Thereby, an air current can be easily extended along the left and right walls of the narrow passage, and can be spread in the left and right directions without being separated from the wall surface.

  According to the present invention, in the fine particle diffusing apparatus having the above-described configuration, the dividing passage in which the fine particle generator is disposed is provided with a throttle portion that restricts the flow path at a position where the fine particle generator is disposed or upstream thereof. It is characterized by being able to. According to this configuration, the airflow is squeezed and rectified on the upstream side or on the upstream side of the microparticle generator, and the flow velocity is increased, so that the concentration of microparticles in the vicinity of the microparticle generator decreases. The air flow path after containing the fine particles is expanded by the vertically widened portion.

  Further, the present invention is characterized in that in the fine particle diffusing apparatus having the above-described configuration, the fine particles generated by the fine particle generator include any of ions, fragrances, deodorants, insecticides, and bactericides. .

  According to the present invention, the concentration of the microparticles sent from the first air outlet that sends the first airflow upward is the concentration of the microparticles sent from the second air outlet that sends the second airflow below the first airflow. Since it is lower than the concentration, the first air stream becomes an air curtain and the fine particles contained in the second air stream are not diffused above the living space. Thereby, microparticles can be sufficiently supplied to the living space. In particular, the diffusion of fine particles is prevented on a floor or the like where the ceiling of the living room is high.

  According to the present invention, the air passage has a plurality of divided passages that divide the air outlet vertically, and the wind speed of the airflow flowing through the upper divided passage is larger than the wind speed of the lower divided passage. Since the airflow is sent out from above the living space, the airflow becomes an air curtain and the diffusion of the airflow sent out from the lower divided passage is prevented. Thereby, the microparticles sent to the living space are not diffused above the living space, and the microparticles can be sufficiently supplied to the living space.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing the fine particle diffusing apparatus of the first embodiment. The fine particle diffusing device 1 is provided with leg portions 2 a at the left and right ends of the main body housing 2, and is installed on the floor surface in the living room. A blower outlet 10 is opened at the upper front of the main body housing 2.

  FIG. 2 shows a side sectional view of the fine particle diffusing apparatus 1. A suction port 3 for sucking air in the room is provided on the bottom surface of the main body housing 2. A blower fan 5 covered with a housing 5a is disposed at the lower part of the main body housing 2. The blower fan 5 is formed of a cross flow fan, and sucks air into the housing 5a from the circumferential direction of the rotor blade (not shown) via the intake port 5b, and exhausts it from the exhaust port 5c in the circumferential direction. An air filter 4 is provided between the suction port 3 and the blower fan 5.

  The exhaust port 5c of the blower fan 5 and the blower outlet 10 are connected by a blower path 6 through which an airflow from the blower fan 5 flows. The ventilation path 6 is formed integrally with the housing 5a, extends upward, and bends forward. A plurality of divided passages 11, 12, 13, and 14 divided in the vertical direction are provided in the blower path 6 in order from above.

  The upper divided passage 11 is arranged on the outer peripheral side of the exhaust port 5 c of the blower fan 5, and the lower divided passage 14 is arranged on the inner peripheral side of the exhaust port 5 c of the blower fan 5. The inner peripheral side of the exhaust port 5c indicates the front in the rotational direction of the rotor blade and is on the lower wall 6D (see FIG. 3) side. The outer peripheral side of the exhaust port 5c indicates the rear side in the rotation direction of the rotor blade, and is the upper wall 6U (see FIG. 3) side. The flow velocity of the airflow on the outer peripheral side of the exhaust port 5c is faster than that on the inner peripheral side due to centrifugal force.

  The blower outlet 10 is divided | segmented up and down corresponding to each division | segmentation channel | paths 11-14, and opening part 10a, 10b, 10c, 10d is formed. As will be described in detail later, each of the divided passages 11 to 14 is provided with a vertically widened portion 7 on the upstream side and a laterally widened portion 8 on the downstream side.

Electrodes 17a and 17b (see FIG. 8) of the fine particle generator 17 are exposed and arranged in the lowermost divided passage 14. A voltage having an AC waveform or an impulse waveform is applied to the electrodes 17a and 17b of the microparticle generator 17. A positive voltage is applied to the electrode 17a, and ions generated by ionization combine with moisture in the air to form positive cluster ions mainly composed of H ⁺ (H ₂ O) m.

The electrode 17b negative voltage is applied, ions generated by ionization of moisture combined with mainly O ₂ in air ^- (H ₂ O) charge of n is negative cluster ions are formed. Here, m and n are arbitrary natural numbers. H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n agglomerate and surround the surface of airborne bacteria, odorous components, and stored bacteria.

Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of the microorganism or the like by collision. Destroy airborne bacteria and odor components. Here, m ′ and n ′ are arbitrary natural numbers. Therefore, indoor sterilization and odor removal can be performed by generating positive ions and negative ions and discharging them from the outlet 10.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

Conventionally, it has been known that positive ion ions H ⁺ (H ₂ O) m and negative ions O ₂ ⁻ (H ₂ O) n are sent into the air to sterilize floating bacteria by ion reaction. . Since these ions recombine with each other and disappear, even if a high concentration can be realized in the vicinity of the electrode of the ion generating element, the concentration rapidly decreases as the distance to be transmitted increases.

For this reason, even if the ion concentration can be tens of thousands / cm ^{3 in} a small volume space such as an experimental apparatus, it is at most 2 to 3000 / cm in a large space such as an actual living space or work space. ^The limit was ³ .

On the other hand, according to the experiment, 99% of avian influenza viruses can be removed in 10 minutes when the ion concentration is 7000 / cm ³ , and 99.9% can be removed in 10 minutes at 50,000 / cm ³ . That is, assuming that 1000 viruses / cm ³ of virus exist in the air, 10 / cm ³ and 1 / cm ³ remain by sterilization with ions, respectively. Therefore, the remaining virus can be reduced to 1/10 by increasing the ion concentration from 7000 / cm ³ to 50,000 / cm ³ .

  For this reason, it is very important not only to send out ions but also to maintain a high concentration of ions in the living space where people and the like live and the work space as a whole in preventing infections and purifying the environment.

  FIG. 3 is a side sectional view showing a schematic configuration of the blower path 6. The upper wall 6U and the lower wall 6D of the blower path 6 have curved surface portions 6a and 6b, respectively. Each wall surface forming the division passages 11 to 14 is curved along the upper wall 6U and the lower wall 6D, and one end D1 is provided in the vicinity of the blower fan 5.

  Thus, the divided passages 11 to 14 are formed from the vicinity of the blower fan 5 to the outlet 10. The starting points A1 and A2 of the curved surface portions 6a and 6b are arranged downstream of the starting points (D1) of the divided passages 11 to 14. Thereby, the line C1 connecting the centers of the curved surface portions 6a and 6b is arranged on the downstream side of the starting point (D1) of the divided passages 11-14.

  When the airflow flowing upward through the air flow path 6 is bent forward by the curved surface portions 6a and 6b, the airflow is directed upward due to inertia and easily separated from the lower wall 6D along the upper wall 6U. Thereby, the airflow flowing through the upper part of the air flow path 6 becomes faster than the airflow flowing through the lower part.

  In addition, the divided passages 11 to 14 are arranged in order from the outer peripheral side of the exhaust port 5 c of the blower fan 5. For this reason, the speed of the airflow flowing through the divided passages 11 to 14 can be increased in order from the top.

  When the division | segmentation channel | paths 11-14 are not provided, the airflow which peels from lower wall 6D increases. For this reason, as shown in FIG. 4, in the velocity distribution of the airflow at the outlet 10, a backflow region H in which the airflow flows back on the lower wall 6D side is generated and the airflow is disturbed.

  The plurality of division passages 11 to 14 are provided from the vicinity of the blower fan 5, and the division passages 11 to 14 increase the wetting edge length (periphery length surrounding the cross section) of the flow path cross section. For this reason, the influence of the viscosity is greater than the inertia on the flow, and the airflow is likely to follow along the wall surfaces of the divided passages 11 to 14. Thereby, as shown in FIG. 5, the backflow area | region H is not formed, but peeling of airflow is reduced and turbulence of airflow is suppressed.

  At this time, when the starting point (D1) of the divided passage is on the downstream side of the line C1 connecting the centers B1 and B2 of the curved surface portions 6a and 6b, a backflow region H is generated as shown in FIG. For this reason, the turbulence of the airflow can be suppressed by arranging the line C1 connecting the centers of the curved surface portions 6a and 6b on the downstream side of the starting points (D1) of the divided passages 11 to 14. When the starting point (D1) of the division passages 11 to 14 is set near the exhaust port 5c of the blower fan 5, the turbulence of the airflow can be more reliably suppressed.

  Here, when the curved surface portions 6a and 6b have a constant curvature, the centers B1 and B2 are midpoints of the creepage distance. When the curved surface portions 6a and 6b change, the centers B1 and B2 are positions where (θ1 + θ2) / 2 when the angles of the tangent to the horizontal of the start and end points of the curved surface portions 6a and 6b are θ1 and θ2, respectively. .

  In addition, as shown in FIG. 7, even when the two divided passages 11 and 14 are provided, the turbulence of the airflow can be suppressed as compared with the cases shown in FIGS. At this time, the backflow region H may be formed in part due to the bending state of the blower path 6. On the other hand, increasing the quantity of the divided passages increases the pressure loss. For this reason, the quantity of division | segmentation paths is set according to the flow-path area of the ventilation path 6, and the bending condition.

  In FIG. 3, the vertically widened portion 7 is widened in the vertical direction on the downstream side with respect to the upstream side between the upper wall 6U and the lower wall 6D of the blower path 6. Thereby, an air current spreads from the blower outlet 10 in the vertical direction and is sent out. Each of the divided passages 11 to 14 is widened in the vertical direction on the downstream side with respect to the upstream side, and the flow path cross section is formed in a slit shape in which the width in the horizontal direction is sufficiently larger than the width in the height direction. For this reason, the area which the airflow which distribute | circulates the ventilation path | route 6 contacts the upper and lower wall surface of each division | segmentation channel | paths 11-14 becomes large. Thereby, the airflow which distribute | circulates the division | segmentation channel | paths 11-14 can be expanded to an up-down direction, without making it peel from an up-and-down wall surface.

  The left and right widened portions 8 are arranged on the downstream side of the upper and lower widened portions 7, and the upper and lower wall surfaces are extended in a planar shape from the end of the upper and lower widened portions 7. FIG. 8 shows a plan view of the dividing passage 14. The left and right widened portion 8 is widened in the left-right direction on the downstream side with respect to the upstream side between the left wall 6L and the right wall 6R of the air flow path 6. Thereby, an airflow spreads from the blower outlet 10 in the left-right direction and is sent out.

  The left-right widened portion 8 has a plurality of narrow passages 8a obtained by further dividing the divided passages 11 to 14 in the left-right direction. The electrodes 17a and 17b of the fine particle generator 17 are provided corresponding to each narrow passage 8a. Thereby, the annihilation by the collision of positive and negative ions can be reduced.

  The left wall 6L and the right wall 6R have curved surface portions 6c and 6d, respectively. Each wall surface forming the narrow passage 8a is curved along the left wall 6L and the right wall 6R. Each narrow passage 8 a is widened in the left-right direction on the downstream side with respect to the upstream side by the left and right wall surfaces, and the width in the left-right direction is narrowed in the left-right direction with respect to the upper and lower widened portion 7. Thereby, the area which the airflow which distribute | circulates the ventilation path | route 6 contacts the left and right wall surface of the narrow channel | path 8a becomes large. Therefore, it is possible to spread the airflow in the left-right direction without causing the airflow flowing through the narrow passage 8a to peel off from the left and right wall surfaces.

  A line C2 connecting the centers of the curved surface portions 6c and 6d is arranged on the downstream side of the one end D2 of the wall surface of the narrow passage 8a. Therefore, the turbulence of the air current in the left and right widened portion 8 can be prevented by each narrow passage 8a.

  The left and right widened portions 8 may be arranged on the upstream side of the vertical widened portion 7. At this time, the ventilation path 6 has a divided passage divided in the left-right direction, and a left-right widened portion 8 is formed in an upstream portion of the divided passage. The left and right widened portion 8 is widened in the left-right direction on the downstream side with respect to the upstream side. The vertically widened portion 7 disposed in the downstream portion of the divided passage is formed with a narrow passage obtained by further dividing each divided passage in the vertical direction. Each narrow passage is widened in the vertical direction on the downstream side with respect to the upstream side.

  However, it is more desirable to arrange the left and right widened portions 8 on the downstream side of the vertical widened portion 7. Thereby, the ventilation path 6 integral with the housing 5a of the blower fan 5 can be molded with the removal direction of the upper widened portion 7 as the left and right and the removal direction of the left and right widened portion 8 as the front and rear. Therefore, the ventilation path 6 can be easily formed.

  In addition, as shown in FIG. 2 described above, the dividing passage 14 is provided with a throttle portion 14 a on the upstream side of the fine particle generator 17. The narrowed portion 14 a has a width d in the height direction that is narrower than a width D in the height direction of the starting point of the divided passage 14. The air flow is rectified while the wind speed is increased in the fine particle generator 17 by the throttle unit 14a. Thereafter, the flow path is widened by the upper and lower widened portions 7.

  When the concentration of ions is high and saturated near the electrodes 17a and 17b of the microparticle generator 17, ions are hardly generated. For this reason, it is possible to reduce the ion concentration by increasing the velocity of the air flow of the electrodes 17a and 17b of the microparticle generator 17 at the throttle portion 14a. Thereby, many ions can be generated by the microparticle generator 17 and included in the airflow.

  In the fine particle diffusing device 1 having the above configuration, when the blower fan 5 and the fine particle generator 17 are driven, the air in the living room is taken into the main body housing 2 from the suction port 3. The air taken into the main body housing 2 collects dust by the air filter 4 and is guided to the blower fan 5 from the air inlet 5b.

  Exhaust air from the blower fan 5 flows through the blower path 6 through the exhaust port 5c. The airflow flowing through the air blowing path 6 branches into the divided passages 11 to 14, and the flow path expands in the vertical direction at the upper widened portion 7 and the flow path expands in the horizontal direction at the left and right widened portion 8. Thereby, the airflow which spreads up and down and the left-right direction from the blower outlet 10 is sent out.

  The airflow flowing through the divided passage 14 at the lower part of the air blowing path 6 includes positive ions and negative ions by the microparticle generator 17. Thereby, the airflow (2nd airflow) containing a positive ion and a negative ion is sent out from the opening part 10d (2nd blower outlet).

  Moreover, the airflow (first airflow) sent from the openings 10a, 10b, and 10c (first air outlets) flows through the divided passages 11, 12, and 13 at the upper part of the blower path 6, and the wind speed is high. For this reason, the airflow sent from the openings 10a, 10b, and 10c serves as an air curtain to prevent ions from diffusing upward. Therefore, sufficient ions are supplied to the living space by sending an air flow from the opening 10d toward the living space in the living room, and sending an air current upward from the opening 10a, 10b, 10c to the living space. A high bactericidal effect can be obtained.

  Moreover, the division | segmentation channel | paths 11-14 are distribute | arranged in order from the upper direction, and the wind speed is increasing the airflow sent from opening part 10a-10d in order from the upper direction. Thereby, turbulence of the airflow can be reduced. That is, as shown in FIG. 9, when the wind speed of the airflow between the upper and lower airflows is slow, the vortex F is generated and the airflow is disturbed. On the other hand, as shown in FIG. 10, when the velocity of the airflow changes in order, no vortex flow is generated and the turbulence of the airflow is reduced. 9 and 10, the case where the openings 10b and 10c are common is described as an example.

  FIGS. 11 and 12 are diagrams showing the results of examining the distribution of ions in the room by the microparticle diffusion device 1 of the present embodiment. The living room R has a height of 4800 mm, a width of 6400 mm, and a depth of 6400 mm. The fine particle diffusion device 1 is installed on the floor surface F of one side wall W1, and sends an airflow obliquely upward toward the side wall W2 facing the side wall W1. The ion concentration was measured on a vertical plane D passing through the center in the left-right direction of the fine particle diffusing apparatus 1.

  For comparison, FIG. 13 and FIG. 14 show the results of examining the distribution of ions in the case where an air flow is blown obliquely upward in the same room R without forming a divided passage in the air blowing path 6. FIGS. 15 and 16 show the results of examining the distribution of ions when the air flow is blown out vertically in the same living room R without forming a divided passage in the air blowing path 6.

  According to FIGS. 14 and 16, ions diffuse to the ceiling surface S in the room R, the ion concentration in the upper part of the room R is high, and the ion concentration in the living space (height of about 1600 mm or less) in the lower part of the room R is low. On the other hand, in this embodiment shown in FIG. 12, diffusion of ions upward is suppressed, and the ion concentration in the living space below the living room R can be increased.

  According to the present embodiment, openings 10a to 10c (first air outlets) for sending an airflow (first airflow) are provided above, and an opening 10d (second airflow) for sending an airflow (second airflow) below the airflow. 2 outlets) are provided. And the ion is contained in the airflow sent from the opening parts 10a-10c, including ions in the airflow sent out from the opening part 10d. For this reason, the airflow sent from the openings 10a to 10c becomes an air curtain, and ions contained in the airflow sent from the opening 10d are not diffused above the living space. Thereby, ion can fully be supplied to living space. In particular, ions can be prevented from diffusing on a floor with a high ceiling in the living room, and a greater effect can be obtained.

  A part of the ions generated by the microparticle generator 17 may be sent out from the openings 10a to 10c. At this time, by making the concentration of ions sent from the openings 10a to 10c lower than the concentration of ions sent from the opening 10d, many ions are not diffused above the living space as described above. Therefore, sufficient ions can be supplied to the living space. In particular, it is effective in a room with a low ceiling because there is little diffusion upward.

  Moreover, since the wind speed of the airflow sent from the openings 10a to 10c is faster than the wind speed of the airflow sent from the openings 10d, the air curtain can be reliably formed. In addition, since an airflow having a low wind speed is sent to the living space, ions can be supplied to the living space without letting a person feel the wind. In addition, you may form the airflow of a different wind speed by several ventilation fans.

  Moreover, since the airflow sent from the opening 10d is adjacent to the airflow sent from the openings 10a to 10c, ions can be supplied far along the airflow sent from the openings 10a to 10c having a high wind speed. it can.

  Moreover, since the opening parts 10a-10c are divided | segmented up and down and the wind speed of the airflow which blows off from upper part is faster than the wind speed of the airflow which blows off from the lower part, the airflow sent out from a blower outlet becomes wind speed gradually as it goes upwards. Will increase. Thereby, turbulence of the airflow is suppressed and the air blowing efficiency can be improved.

  Further, since the air current is sent out from the opening 10d in the up-down direction by the up-and-down widening section 7, ions can be diffused in the up-down direction of the living space. Therefore, ions can be more sufficiently supplied to the living space.

  In addition, since the air flow is sent out from the opening 10d in the left-right direction by the left-right widened portion 8, ions can be diffused in the left-right direction of the living space. Therefore, ions can be more sufficiently supplied to the living space.

  Moreover, since the airflow is sent out from the openings 10a to 10c in the left-right direction by the left and right widened portion 8, the air curtain can be reliably formed.

  Moreover, since the ventilation path 6 has the some division passages 11-14 which divide the blower outlet 10 up and down, and the wind speed of the airflow which distribute | circulates the upper division passages 11-13 is larger than the wind speed of the lower division passage 14 By sending the air flow from the upper divided passages 11 to 13 to the upper part of the living space, the air flow becomes an air curtain and the air flow sent from the lower divided passage 14 is prevented from diffusing. Thereby, ions are not diffused above the living space, and ions can be sufficiently supplied to the living space.

  In addition, since the microparticle generator 17 is arranged in the lower divided passage 14, ions are included in the low-speed air stream sent out from the lower part of the outlet 10, and the ions are supplied to the living space without letting a person feel the wind. can do.

  Moreover, since the ventilation path 6 extends upward from the ventilation fan 5 and bends forward, and extends from the vicinity of the ventilation fan 5 to the outlet 10 to form the divided passages 11 to 14, Since the wet blot length is increased, the airflow is likely to follow along the wall surfaces of the divided passages 11-14. Thereby, while increasing the wind speed of the upper part of the ventilation path | route 6, it can reduce peeling of an airflow and can suppress disturbance of an airflow.

  Moreover, since it extended to the blower outlet 10 from the upstream rather than the position which connects the center of the curved surface part 6a of the upper wall 6U of the ventilation path 6, and the center of the curved surface part 6b of lower wall 6D, the division | segmentation channel | paths 11-14 were formed. The airflow that peels from the lower wall 6D can be reduced, and the turbulence of the airflow can be suppressed.

  Further, since the lower divided passage 14 is arranged on the inner peripheral side of the exhaust port 5c of the blower fan 5 with respect to the upper divided passages 11 to 13, the wind speed of the airflow flowing through the upper divided passages 11 to 13 is made faster. be able to.

  In addition, since the divided passages 11 to 14 have the upper and lower widened portions 7 and the cross section perpendicular to the airflow of the upper and lower widened portions 7 is formed in a slit shape extending in the left and right direction, the airflow flowing through the air blowing path 6 is each divided passage 11. The area which contacts the upper and lower wall surfaces of -14 becomes large. Thereby, the airflow which distribute | circulates the division | segmentation channel | paths 11-14 can be expanded to an up-down direction, without making it peel from an up-and-down wall surface. Therefore, ions can be more diffused above and below the living space.

  Further, since the divided passages 11 to 14 have the left and right widened portions 8 on the downstream side of the upper and lower widened portions 7 to widen the downstream side with respect to the upstream side and widen the airflow in the left and right direction, The ions can be further diffused to the left and right, and the air curtain can be widely formed to prevent the ions from diffusing upward. Moreover, the air flow path 6 can be easily formed with good moldability.

  Further, the left and right widened portion 8 has a plurality of narrow passages 8a obtained by dividing the respective divided passages 11 to 14 in the left and right direction, and each narrow passage 8a is widened to the left and right with respect to the upstream side. The airflow flowing through 6 increases the area of contact with the left and right wall surfaces of the narrow passage 8a. Thereby, the airflow which distribute | circulates the narrow channel | path 8a can be spread in the left-right direction, without making it peel from a left-right wall surface.

  Further, since the dividing passage 14 in which the microparticle generator 17 is disposed is provided with a throttle portion 14a that restricts the flow path upstream of the microparticle generator 17, the airflow is throttled upstream of the microparticle generator 17. Rectified. In addition, since the flow velocity is increased by the throttle portion 14a, the concentration of ions in the vicinity of the microparticle generator 17 decreases. Thereby, many ions can be generated by the microparticle generator 17 and included in the airflow. In addition, you may provide the aperture | diaphragm | squeeze part 14a in the position where the microparticle generator 17 is arrange | positioned.

  Next, a second embodiment will be described. In the present embodiment, as shown in FIG. 7 described above, the two divided passages 11 and 14 are provided vertically. Thereby, two opening part 10a, 10d (refer FIG. 2) arranged in parallel up and down is formed in the blower outlet 10 (refer FIG. 2), and airflow is sent into a living room from opening part 10a, 10d. The fine particle generator 17 is provided in the dividing passage 14. Other parts are the same as those in the first embodiment.

  FIG. 17 and FIG. 18 are diagrams showing the results of examining the distribution of ions in the room by the microparticle diffusion device 1 of the present embodiment. Similarly to FIG. 11 described above, the living room R has a height of 4800 mm, a width of 6400 mm, and a depth of 6400 mm. The fine particle diffusing apparatus 1 is installed on the floor surface F of one side wall W1, and sends an air flow toward the side wall W2 facing the side wall W1. The ion concentration was measured on a vertical plane D passing through the center in the left-right direction of the fine particle diffusing apparatus 1.

  According to FIG. 18, diffusion of ions upward is suppressed as compared with FIGS. 14 and 16 of the comparative example described above, and the ion concentration in the living space below the living room R can be increased.

  According to the present embodiment, similarly to the first embodiment, the opening 10a (first air outlet) for sending an air flow (first air flow) is provided above, and the air flow (second air flow) is sent below the air flow. An opening 10d (second outlet) is provided. And the ion is contained in the airflow sent from the opening part 10a, and ions are contained in the airflow sent out from the opening part 10a. For this reason, the airflow sent from the opening 10a becomes an air curtain, and ions contained in the airflow sent from the opening 10d are not diffused above the living space. Thereby, ion can fully be supplied to living space. A part of the ions may be sent out from the opening 10a at a concentration lower than that of the opening 10d.

  Next, a third embodiment will be described. In the present embodiment, three divided passages are provided at the top and bottom. Thus, as shown in FIG. 10 described above, the air outlet 10 (see FIG. 2) is formed with three openings 10a, 10b, and 10d that are arranged side by side in the vertical direction, and air flows into the room from the openings 10a, 10b, and 10d. Is sent out. The fine particle generator 17 is provided in the lower divided passage having the opening 10d. Other parts are the same as those in the first embodiment.

  As shown in FIG. 10, the velocity of the airflow sent from the openings 10a, 10b, and 10d changes in order from the top. As a result, no vortex flow is generated, and the turbulence of the airflow is reduced. And as shown in FIG. 19, the airflow which does not contain ion is sent out from the opening part 10a, 10b above the living space, and the airflow containing ion is sent out from the opening part 10d to living space. Thereby, the effect similar to 1st, 2nd embodiment can be acquired. A part of the ions may be sent from the openings 10a and 10b at a concentration lower than that of the opening 10d.

  Next, FIG. 20 is a schematic side cross-sectional view showing the microparticle diffusion device 1 of the fourth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIG. 1 and FIG. In this embodiment, the blower fan 5 is composed of a sirocco fan or a turbo fan that is sucked in the axial direction and exhausted in the circumferential direction. Other parts are the same as those in the first and second embodiments.

  The blower path 6 has a plurality of divided passages 11 and 14 that extend upward from the blower fan 5, bend forward, and are divided vertically. A fine particle generator 17 is disposed in the lower divided passage 14. The dividing passage 14 is provided with a throttle portion 14a at a position where the fine particle generator 17 is disposed.

  The blower fan 5 composed of a sirocco fan or a turbo fan is provided with a plurality of blades 5h on a disk 5g, and sucks in the axial direction and exhausts in the circumferential direction. For this reason, the disk 5g is disposed to face the intake port 5a, the divided passage 14 is disposed on the intake port 5a side, and the divided passage 11 is disposed on the disk 5g side. Due to the viscosity of the air, the exhaust air at the exhaust port 5c has a low wind speed on the suction port 5b side and a high wind speed on the disk 5g side. For this reason, the speed of the airflow sent from the opening part 10a can be increased by providing the upper division | segmentation channel | path 11 in the disk 5g side. Therefore, the air inlet 5b is disposed on the side where the air blowing path 6 is bent.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. A part of the ions may be sent out from the opening 10a at a concentration lower than that of the opening 10d.

  In the first to fourth embodiments, the microparticle diffusion device 1 generates positive ions and negative ions by the microparticle generator 17 and sends them out from the outlet 10 to sterilize the room. The fine particle diffusion device 1 that generates only negative ions by the fine particle generator 17 and obtains a relaxation effect in the room may be used. Alternatively, the fine particle diffusing device 1 that generates fragrance, deodorant, insecticide, bactericidal agent and the like by the fine particle generator 17 and performs deodorization, insecticide, sterilization, etc. in the room may be used.

  INDUSTRIAL APPLICABILITY According to the present invention, the present invention can be used in a microparticle diffusion device that sends out microparticles such as ions, fragrances, deodorants, insecticides, and bactericides and diffuses them into the room.

The perspective view which shows the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing which shows the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing which shows the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing explaining the function of the division | segmentation channel | path of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing explaining the function of the division | segmentation channel | path of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing explaining the function of the division | segmentation channel | path of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing explaining the function of the division | segmentation channel | path of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. The top view which shows the right-and-left widening part of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing explaining the wind speed of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. Side surface sectional drawing explaining the wind speed of the ventilation path | route of the microparticle diffusion apparatus of 1st Embodiment of this invention. The perspective view which shows the ventilation state in the living room of the microparticle diffusion apparatus of 1st Embodiment of this invention. The figure which shows the measurement result of the ion concentration by the microparticle diffusion apparatus of 1st Embodiment of this invention. The perspective view which shows the ventilation state in the room of the microparticle diffusion apparatus of the comparative example of this invention The figure which shows the measurement result of the ion concentration by the microparticle diffusion apparatus of the comparative example of this invention The perspective view which shows the ventilation state in the room of the microparticle diffusion apparatus of the comparative example of this invention The figure which shows the measurement result of the ion concentration by the microparticle diffusion apparatus of the comparative example of this invention The perspective view which shows the ventilation state in the living room of the microparticle diffusion apparatus of 2nd Embodiment of this invention. The figure which shows the measurement result of the ion concentration by the microparticle diffusion apparatus of 2nd Embodiment of this invention. The perspective view which shows the ventilation state in the living room of the microparticle diffusion apparatus of 3rd Embodiment of this invention. Side surface sectional drawing which shows the microparticle diffusion apparatus of 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fine particle diffusion apparatus 2 Main body housing 3 Suction port 4 Air filter 5 Blower fan 6 Blower path 6a, 6b Curved surface part 7 Vertically widened part 8 Left and right widened part 8a Narrow passage 10 Outlet 10a-10d Opening part 11-14 Divided passage 17 Fine particle generator

Claims (19)

  A first air outlet that sends out the first air flow upward, a second air outlet that is arranged below the first air outlet and sends out the second air current below the first air flow, and generation of fine particles that generate fine particles A fine particle generated by the fine particle generator, and the concentration of the fine particles delivered from the first outlet is lower than the concentration of the fine particles delivered from the second outlet. A fine particle diffusion device.   The fine particle diffusing apparatus according to claim 1, wherein fine particles are not delivered from the first outlet.   The fine particle diffusing apparatus according to claim 1 or 2, wherein the wind velocity of the first air stream is higher than that of the second air stream.   The fine particle diffusion device according to claim 3, wherein the second air flow is adjacent to the first air flow.   The first air outlet is divided into upper and lower parts, and the wind speed of the first air stream blown from the upper part of the first air outlet is made faster than the wind speed of the first air stream blown from the lower part. Item 5. The microparticle diffusion device according to Item 4.   The fine particle diffusing apparatus according to any one of claims 1 to 5, wherein the second air flow is enlarged and sent in the vertical direction from the second air outlet.   The fine particle diffusing apparatus according to any one of claims 1 to 6, wherein the second air flow is enlarged and sent in the left-right direction from the second air outlet.   The fine particle diffusing apparatus according to any one of claims 1 to 7, wherein the first air flow is enlarged and sent in the left-right direction from the first air outlet.   The microparticle diffusion device according to any one of claims 1 to 8, wherein the left and right widths of the first outlet are sufficiently larger than the height of the first outlet.   In a microparticle diffusion device that includes a microparticle generator that generates microparticles and that sends microparticles from a blowout port by driving a blower fan, a blower path that connects the blower fan and the blowout port moves up and down the blowout port. A fine particle diffusing apparatus having a plurality of divided passages divided into two, wherein a wind speed of an airflow flowing through the upper divided passage is higher than a wind speed of an airflow flowing through the lower divided passage.   The microparticle diffusion device according to claim 10, wherein the microparticle generator is arranged in the lower divided passage.   The minute passage according to claim 10 or 11, wherein the blower path extends upward from the blower fan, bends forward, and extends from the vicinity of the blower fan to the blower outlet to form the divided passage. Particle diffusion device.   The air flow path has an upper wall and a lower wall that have curved portions, extends upward from the blower fan and bends forward, and has a center of the curved portion of the upper wall and a center of the curved portion of the lower wall. The fine particle diffusing device according to any one of claims 10 to 12, wherein the divided passage is formed by extending from the upstream side to the blower outlet with respect to the connecting position.   The said blower fan consists of a cross flow fan, and the said division | segmentation channel | path was distribute | arranged to the inner peripheral side of the said ventilation fan rather than the said division | segmentation channel | path of the upper part, The Claim 13 characterized by the above-mentioned. Microparticle diffusion device.   The split passage has a vertically widened portion that widens the downstream side with respect to the upstream side and widens the airflow in the vertical direction, and a cross section perpendicular to the airflow of the vertical widened portion is formed in a slit shape extending in the left-right direction. The microparticle diffusion device according to any one of claims 10 to 14, characterized in that it is characterized in that   The fine particle diffusing apparatus according to claim 15, wherein the divided passage has a left and right widened portion that widens the downstream side with respect to the upstream side and widens the airflow in the left-right direction on the downstream side of the vertical widened portion.   The left-right widened portion has a plurality of narrow passages obtained by dividing each of the divided passages in the left-right direction, and the narrow passages are widened on the downstream side to the left and right with respect to the upstream side. The microparticle diffusion apparatus described.   18. The dividing passage in which the fine particle generator is arranged is provided with a throttle part for restricting the flow path at a position where the fine particle generator is arranged or at an upstream side thereof. The microparticle diffusion apparatus according to any one of the above.   The microparticles generated by the microparticle generator include any one of ions, fragrances, deodorants, insecticides, and bactericides. Particle diffusion device.

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