Air blowing fan, circulator, micro-particle diffusion device, and air circulation method

Abstract

An air blowing fan, comprising a crossflow-type impeller, and a first casing and a second casing for covering the impeller and for forming an air flow route, the first casing and the second casing being disposed next to each other in an axial direction of the impeller; and an outgoing direction of the air flow passing through the first casing and an outgoing direction of the air flow passing through the second casing being different from each other.

1 . An air blowing fan, comprising a crossflow-type impeller, and a first casing and a second casing for covering the impeller and for forming an air flow route, the first casing and the second casing being disposed next to each other in an axial direction of the impeller; and an outgoing direction of the air flow passing through the first casing and an outgoing direction of the air flow passing through the second casing being different from each other. 
     
     
         2 . The air blowing fan according to  claim 1 , the first casing having one end where a first intake-side opening part from which the impeller projects is opened, and extending toward an exhaust side of the impeller; the second casing having one end where a second intake-side opening part from which the impeller projects is opened, and extending toward the exhaust side of the impeller; and an opening surface of the first intake-side opening part and an opening surface of the second intake-side opening part being disposed at different angles relative to a circumferential direction of the impeller. 
     
     
         3 . The air blowing fan according to  claim 2 , a predetermined range of the first casing relative to the first intake-side opening part matching a shape where a predetermined range of the second casing relative to the second intake-side opening part has been rotatingly moved around the center of rotation of the impeller when seen from the axial direction of the impeller. 
     
     
         4 . The air blowing fan according to  claim 2 , the outgoing direction of the air flow flowing through the first casing, and the outgoing direction of the air flow flowing through the second casing differing by 90° or more from each other. 
     
     
         5 . An air blowing fan, comprising:
 a first impeller and a second impeller disposed on a single shaft;   a motor for rotatingly driving the first impeller and the second impeller;   a first casing for covering the first impeller, the first casing having a first cylindrical part where a first air-intaking port is opened in an axial direction as well as a first outgoing passage extending from a circumferential surface of the first cylindrical part in a circumferentially tangential direction and having a distal end where a first outlet is opened; and   a second casing for covering the second impeller, the second casing having a second cylindrical part where a second air-intaking port is opened in an axial direction as well as a second outgoing passage extending from a circumferential surface of the second cylindrical part in a circumferential tangential direction and having a distal end where a second outlet is opened;   the direction in which the first outgoing passage extends from the first cylindrical part and the direction in which the second outgoing passage extends from the second cylindrical part being different from each other in the circumferential direction, and an outgoing direction of the air flow blown out from the first outlet and an outgoing direction of the air flow blown out from the second outlet being different from each other.   
     
     
         6 . The air blowing fan according to  claim 5 , an opening area of the first outlet being smaller than an opening area of the second outlet. 
     
     
         7 . The air blowing fan according to  claim 6 , a width of the first outlet in a direction perpendicular to the shaft being smaller than a width of the second outlet in a direction perpendicular to the shaft. 
     
     
         8 . The air blowing fan according to  claim 6 , the first outgoing passage having an upstream part where the flow route is gradually expanded in a direction perpendicular to the shaft, and, downstream of the upstream part, a downstream part where the flow route is kept constant or is gradually constricted in a direction perpendicular to the shaft until the first outlet; and the second outgoing passage having a flow route gradually expanding in a direction perpendicular to the shaft between the second cylindrical part and the second outlet. 
     
     
         9 . The air blowing fan according to  claim 5 , the first impeller and the second impeller having a circular plate coupled to the motor, as well as blades erected in a radiating shape on both surfaces of the circular plate; and the first air-intaking port and the second air-intaking port being provided to both surfaces, in the axial direction, of the first cylindrical part and the second cylindrical part, respectively. 
     
     
         10 . A circulator for circulating air present in a room, the circulator being mounted on one side wall in the room or on a ceiling wall located close to one side wall in the room; the circulator further comprising, in order from a first wall surface adjacent to the one side wall in the horizontal direction, a first outlet, a second outlet, and a third outlet, which outlets are disposed next to each other in a horizontal direction; a first air flow which flows along the ceiling wall and descends along the first wall surface being delivered from the first outlet; a second air flow which flows along the ceiling wall and descends along a second wall surface facing the one side wall being delivered from the second outlet; and a third air flow which flows along the ceiling wall and descends along a third wall surface facing the first wall surface being delivered from the third outlet. 
     
     
         11 . The circulator according to  claim 10 , comprising an air blowing fan made of a centrifugal fan or a cross-flow fan, and an air blowing path where the air blowing fan is disposed so that a rotation shaft is disposed horizontally; the air blowing path being divided downstream of the air blowing fan; the first outlet, the second outlet, and the third outlet having a first divided passage, a second divided passage, and a third divided passage respectively opening on a front end; and a wall surface on an inside of the first divided passage and the third divided passage being inclined with respect to the vertical plane. 
     
     
         12 . The circulator according to  claim 10 , comprising a fourth outlet for delivering downward a fourth air flow flowing along the one side wall. 
     
     
         13 . The circulator according to  claim 10 , comprising a fourth outlet for delivering a fourth air flow oriented downward and forward, and a flow rate of the fourth air flow is less than a flow rate of the second air flow. 
     
     
         14 . A circulator, comprising: a chassis that opens at an inlet and an outlet; an air blowing path for coupling the inlet and the outlet, the air blowing path being provided inside the chassis; and an air blowing fan for delivering an air flow in a circumferential direction, the air blowing fan being disposed in the air blowing path; the circulator being adapted to deliver, from the outlet, air present in the room flowing from the inlet into the air blowing path and adapted to circulate the air present in the room; the air blowing path having: a perpendicular-direction-expanded part where, downstream of the air blowing fan, the flow route is gradually expanded in a direction perpendicular to a rotation shaft of the air blowing fan; and, downstream of the perpendicular-direction-expanded part, an axial-direction-expanded part where the flow route is gradually expanded in an axial direction of the rotation shaft and is kept constant or gradually constricted in a direction perpendicular to the rotation shaft. 
     
     
         15 . The circulator according to  claim 14 , a flow route area of the axial-direction-expanded part expanding proportionately with downstream movement. 
     
     
         16 . The circulator according to  claim 14 , having a plurality of divided passages coupled to the perpendicular-direction-expanded part and to the axial-direction-expanded part, the divided passages being divided in the axial direction of the rotation shaft. 
     
     
         17 . The circulator according to  claim 14 , the chassis being disposed in the vicinity of the ceiling wall in the room, the rotation shaft being disposed horizontally; the outlet being formed on an upper end of the chassis; and the air flow being delivered from the outlet along the ceiling wall. 
     
     
         18 . The circulator according to  claim 14 , the chassis being disposed in the vicinity of the ceiling wall in the room, the rotation shaft being disposed horizontally; the outlet being formed on a lower part of the chassis; and the air flow being delivered upward from the outlet. 
     
     
         19 . A circulator, comprising the air blowing fan according to  claim 1 ; an air flow being delivered in a plurality of directions into a room; and air present in the room being circulated. 
     
     
         20 . The circulator according to  claim 19 , an air flow being delivered into the room by the first casing horizontally or forward and upward; and an air flow being delivered downward into the room by the second casing. 
     
     
         21 . A circulator, the air blowing fan according to  claim 5  being provided to a chassis; an air flow being delivered in a plurality of directions into a room; and the air present in the room being circulated. 
     
     
         22 . The circulator according to  claim 21 , an air flow being delivered by the first casing vertically upward or backward and upward from the first outlet; and an air flow being delivered by the second casing forward and upward from the second outlet. 
     
     
         23 . The circulator according to  claim 21 , an air flow being delivered by the first casing horizontally or forward and upward from the first outlet; and an air flow being delivered by the second casing forward and downward into the room from the second outlet. 
     
     
         24 . The circulator according to  claim 22 , the first outlet and the second outlet being provided to one surface of the chassis; a mounting surface facing the one surface being able to abut a floor surface in the room and be mounted on the floor surface, and the mounting surface being able to abut a side wall in the room and to be mounted on the side wall. 
     
     
         25 . The circulator according to  claim 21 , comprising a HEPA filter for collecting dust in the air flowing into the first casing and into the second casing. 
     
     
         26 . A micro-particle diffusion device for delivering micro-particles into a room, the device having a micro-particle generation device for generating the micro-particles, and the device being mounted on a one side wall in the room or a ceiling wall located close to the one side wall in the room, the micro-particle diffusion device further comprising, in order from a first wall surface adjacent to the one side wall in the horizontal direction, a first outlet, a second outlet, and a third outlet disposed next to each other in the horizontal direction; a first air flow which flows along the ceiling wall and descends along the first wall surface being delivered from the first outlet; a second air flow which flows along the ceiling wall and descends along a second wall surface facing the one side wall being delivered from the second outlet; and a third air flow which flows along the ceiling wall and descends along a third wall surface facing the first wall surface being delivered from the third outlet. 
     
     
         27 . A micro-particle diffusion device comprising: a chassis that opens at an inlet and an outlet; an air blowing path for coupling the inlet and the outlet, the air blowing path being provided inside the chassis; an air blowing fan for delivering an air flow in a circumferential direction, the air blowing fan being disposed in the air blowing path; and a micro-particle generation device for generating micro-particles, the micro-particle generation device being disposed downstream of the air blowing fan; the micro-particles being introduced into air present in the room flowing into the air blowing path from the inlet, and being delivered from the outlet; and the air blowing path having: a perpendicular-direction-expanded part where, downstream of the air blowing fan, the flow route is gradually expanded in a direction perpendicular to a rotation shaft of the air blowing fan; and, downstream of the perpendicular-direction-expanded part, an axial-direction-expanded part where the flow route is gradually expanded in an axial direction of the rotation shaft and is kept constant or gradually constricted in the direction perpendicular to the rotation shaft. 
     
     
         28 . A micro-particle diffusion device, comprising the air blowing fan according to  claim 1 , as well as a micro-particle generation device for generating micro-particles; an air flow that includes the micro-particles being delivered into the room in a plurality of directions; and the micro-particles being diffused into the room. 
     
     
         29 . The micro-particle diffusion device according to  claim 28 , an air flow being delivered into the room by the first casing horizontally or upward; and an air flow being delivered downward into the room by the second casing. 
     
     
         30 . A micro-particle diffusion device, comprising a micro-particle generation device for generating micro-particles within the circulator according to  claim 21 ; an air flow that includes the micro-particles being delivered into the room in a plurality of directions; and the micro-particles being diffused into the room. 
     
     
         31 . The micro-particle diffusion device according to  claim 27 , the micro-particles generated by the micro-particle generation device including any of ions, an air freshener, a deodorant, an insecticide, or a disinfectant. 
     
     
         32 . An air circulation method for causing air present in a room to circulate using a circulator mounted in a vicinity of a corner between one side wall and a ceiling wall in the room; the circulator comprising, in order from a first wall surface adjacent to the one side wall in the horizontal direction, a first outlet, a second outlet, and a third outlet disposed next to each other in the horizontal direction; a first air flow which flows along the ceiling wall and descends along the first wall surface being delivered from the first outlet; a second air flow which flows along the ceiling wall and descends along a second wall surface facing the one side wall being delivered from the second outlet; and a third air flow which flows along the ceiling wall and descends along a third wall surface facing the first wall surface being delivered from the third outlet. 
     
     
         33 . The circulator according to  claim 23 , the first outlet and the second outlet being provided to one surface of the chassis; a mounting surface facing the one surface being able to abut a floor surface in the room and be mounted on the floor surface, and the mounting surface being able to abut a side wall in the room and to be mounted on the side wall. 
     
     
         34 . The micro-particle diffusion device according to  claim 28 , the micro-particles generated by the micro-particle generation device including any of ions, an air freshener, a deodorant, an insecticide, or a disinfectant. 
     
     
         35 . The micro-particle diffusion device according to  claim 29 , the micro-particles generated by the micro-particle generation device including any of ions, an air freshener, a deodorant, an insecticide, or a disinfectant. 
     
     
         36 . The micro-particle diffusion device according to  claim 30 , the micro-particles generated by the micro-particle generation device including any of ions, an air freshener, a deodorant, an insecticide, or a disinfectant.