WO2011142181A1

WO2011142181A1 - Air blower and air purifier

Info

Publication number: WO2011142181A1
Application number: PCT/JP2011/057302
Authority: WO
Inventors: 弘文鈴木
Original assignee: シャープ株式会社
Priority date: 2010-05-10
Filing date: 2011-03-25
Publication date: 2011-11-17
Also published as: JP5121878B2; CN203240702U; JP2011237107A

Abstract

Provided are an air blower and an air purifier containing said air blower, with which air from an air outlet can be blown out more uniformly and at high speed, and with which generated ions can be blown out efficiently and far in a room. A first air passage (13A) contains a cylindrical circumferential surface section (131) along the outer circumference of a sirocco fan (12), said circumferential surface section (131) having an opening (131A). A second air passage (13B) contains: a first side surface section (133) that extends from one side of the opening (131A) of the circumferential surface section (131) in the circumferential direction to a direction that is substantially tangential to the sirocco fan (12), and that is connected to part of an air outlet (7); and a second side surface section (134) that faces said first side surface section (133), that extends from the other side of the opening (131A) of the circumferential surface section (131) in the circumferential direction to the air outlet (7), and that is connected to the other part of the air outlet (7).

Description

Blower and air purifier

The present invention relates to a blower device and an air cleaner provided with the blower device.

The indoor air is polluted with various substances such as dust, cigarette smoke, and carbon dioxide discharged with breathing. In recent years, airtightness has been enhanced in houses in recent years, and such pollutants tend to accumulate in the room, and it is necessary to actively ventilate the room air.

However, in houses and offices in areas with relatively severe air pollution, it is not preferable to open windows and ventilate instead of taking dirty air into the room. In addition, even in a house or the like in an area where air pollution is not severe, pollen is taken into the room depending on the season, which is not preferable for people with hay fever.

Therefore, an air purifier is used to clean the indoor air without opening the window. As a method for purifying indoor air, a general method is to suck indoor air, collect dust with a filter, and adsorb contaminants with activated carbon or the like. Therefore, the following basic structure is adopted for the air cleaner.

That is, a blower passage having a blower is provided in the main body of the air cleaner, and an air suction port is disposed at the inlet of the blower passage, while a blowout port is disposed at the outlet of the blower passage. And a dust collection filter and a deodorizing filter are each arrange | positioned in the middle of a ventilation path. Furthermore, an ion generator is disposed in the middle of the air passage, and ions generated by the ion generator are released into the room together with clean air. Mold fungi floating in the room are surrounded and inactivated by the released ions. Thus, the indoor air is purified by the air cleaner. Such an air cleaner is proposed in Patent Document 1, for example.

JP 2000-121111 A

In order to effectively purify indoor air, an air cleaner has been conventionally required to generate ions efficiently and to blow out the air containing the generated ions more uniformly from the outlet. Yes.

The present invention has been made in view of such circumstances, and an air blower capable of blowing air more uniformly and at a high speed from a blow-out port, and blowing out generated ions efficiently to the distance of the room, and It aims at providing the air cleaner containing this air blower.

The blower according to the present invention is arranged to surround the sirocco fan, the blowout port for blowing out the air sent out by the sirocco fan to the outside, and the sirocco fan, and guides the air sent out by the sirocco fan. And an air passage having a second air passage portion for blowing air guided by the first air passage portion to the outlet, and the first air passage portion is an outer peripheral portion of the sirocco fan. A cylindrical peripheral surface portion having an opening portion in a circumferential direction thereof, and the second air passage portion is disposed between one end in the circumferential direction of the opening portion of the peripheral surface portion and a part of the outlet. And a first side surface portion disposed in a substantially tangential direction of the sirocco fan, and opposite to the first side surface portion, facing the other end in the circumferential direction of the opening portion of the peripheral surface portion, and the outlet port And a second side surface portion arranged between the portions.

Further, the blower according to the present invention is characterized in that the second side surface portion is inclined so as to have an angle of 21 ° or less with respect to the first side surface portion.

Further, the blower according to the present invention is characterized in that the first and second side portions are substantially parallel.

The air cleaner which concerns on this invention is an air cleaner provided with the air blower mentioned above and an ion generator, Comprising: A said 1st air path part is connected with a surrounding surface part, and it is the rotation axis direction of the said sirocco fan. The sirocco fan further includes an end surface portion that covers both end sides and has an opening on one side for sucking air of the sirocco fan, and the second air passage portion includes the first side surface portion and the second side surface portion of the sirocco fan. Two side plate portions sandwiched from both sides in the rotation axis direction are further provided, and the ion generator is disposed on the side plate portion located on the opening side of the end surface portion of the two side plate portions. It is characterized by being.

The air cleaner according to the present invention is disposed so as to surround the sirocco fan, a sirocco fan, a blow-out port that blows out the air sent out by the sirocco fan, and the sirocco fan. A first air passage portion for guiding the air, a second air passage portion for blowing the air guided by the first air passage portion to the outlet, and an ion generator for generating ions, The one air passage part includes an end face part that covers the sirocco fan at both ends in the rotation axis direction of the sirocco fan and has an opening on one side for sucking air of the sirocco fan, and the second air passage part is , Including two side surfaces disposed between the end surface portion and the outlet on both ends in the rotational axis direction of the sirocco fan, and located on the opening side of the two side surfaces. The ion generator is arranged on the side surface. Characterized in that it is.

In the present invention, the second air passage portion is disposed between one end in the circumferential direction of the opening of the cylindrical peripheral surface portion of the first air passage portion and the outlet, and in a substantially tangential direction of the sirocco fan. 1 side surface part and the 2nd side surface part which spaced apart and opposed the said 1st side surface part, and was distribute | arranged between the other end of the circumferential direction of the opening part of the said surrounding surface part, and the blower outlet. According to this configuration, the air sent out from the sirocco fan toward the outlet by centrifugal force flows along the second side surface portion arranged in the substantially tangential direction of the sirocco fan from the opening of the cylindrical peripheral surface portion. As the air flows, a component of the air flow toward the first side surface portion is generated by the inclination of the second side surface portion. Thereby, it is suppressed that the amount of air blowing on the second side surface side in the air outlet is larger than the amount of air blowing on the first side surface side, and the air is more uniformly distributed over the opening length of the air outlet. Can be blown out. The cylindrical or substantially tangential direction is not intended to be a mathematical cylindrical or tangential direction, but is intended to be a structure that can be recognized as being cylindrical or tangential at first glance.

In the present invention, since the second side surface portion is inclined so as to have an angle of 21 ° or less between the second side surface portion and the first side surface portion, the amount of air blown on the side of the second side surface portion at the outlet is reduced. It is reliably suppressed that the amount of air blown out on the first side surface side is increased, and air can be blown out more uniformly over the opening length of the blowout port.

In the present invention, since the first and second side surface portions are substantially parallel, the amount of air blown on the second side surface portion side at the outlet is larger than the amount of air blown on the first side surface portion side. This is more reliably suppressed, and air can be blown out more uniformly over the opening length of the blowout port. Further, the width of the air passage is made narrower than before, and the wind speed can be increased in the air passage.

In the present invention, the first air path portion is connected to the peripheral surface portion and covers both ends in the axial direction of the sirocco fan, and further includes an end surface portion having an opening on one side for sucking air of the sirocco fan, The second air passage portion further includes two side plate portions that sandwich the first and second side surface portions from both sides in the rotational axis direction of the sirocco fan, and the first air passage of the pair of side plate portions. The ion generator is disposed on a side plate portion located on the opening side of the portion. On the side of the side plate where the ion generator is disposed, the wind pressure is relatively high because the sirocco fan is close to the opening that is the suction port of the sirocco fan. The air blown out from the blower hits the ion generator at high speed, and the ions generated from the ion generator can be efficiently released into the room.

In the case of the blower according to the present invention, variation in the amount of air blown from the blowout port is suppressed, and air can be blown out from the blowout port more uniformly and at high speed. Moreover, when applied to an air purifier, the generated ions can be efficiently blown far away from the room.

It is the perspective view which looked at the air cleaner which concerns on embodiment of this invention from the front side. It is the perspective view which looked at the air cleaner which concerns on embodiment of this invention from the back side. It is a longitudinal cross-sectional view which shows typically the structure of the air cleaner which concerns on embodiment of this invention. It is a partially broken front view which shows the structure of the air cleaner which concerns on embodiment of this invention. It is explanatory drawing which shows typically the flow of the air in the room by the air cleaner which concerns on this Embodiment. It is a partially broken front view which shows the structure of the air cleaner which concerns on Example 1. FIG. It is a partially broken front view which shows the structure of the air cleaner which concerns on Example 2. FIG. It is a schematic diagram which shows the measurement point of a wind speed. It is a graph which shows the result of the wind speed measurement of the air cleaner which concerns on Example 1. FIG. It is a graph which shows the result of the wind speed measurement of the air cleaner which concerns on Example 1. FIG. It is a graph which shows the result of the wind speed measurement of the air cleaner which concerns on the comparative example 1. FIG. It is a graph which shows the result of the wind speed measurement of the air cleaner which concerns on the comparative example 1. FIG. It is explanatory drawing which shows typically the flow of the air in the air cleaner which concerns on the comparative example 1. FIG. It is a graph which shows the result of the measurement of the ion number of the air cleaner which concerns on Example 2 and Comparative Example 1. FIG. It is a graph which shows the result of the measurement of the ion number of the air cleaner which concerns on Example 2 and Comparative Example 1. FIG.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
In the following embodiments, a stationary air cleaner having an air cleaning function will be described as the air cleaner according to the embodiment of the present invention.

(overall structure)
FIG. 1 is a perspective view of an air purifier 1 according to an embodiment of the present invention as viewed from the front side. FIG. 2 is a perspective view of the air purifier 1 according to the embodiment of the present invention as seen from the back side.

As shown in FIGS. 1 and 2, the air purifier 1 mainly includes a main body casing 2, a front panel 3, and

side panels

4 and 4 provided on both left and right sides of the main body casing 2. The main body casing 2 is formed of a vertically long box-like body, and main components of the air cleaner 1 are accommodated therein. A suction port 6 is provided on the main surface of the main casing 2. The suction port 6 is an opening for introducing air outside the air cleaner 1 into the air cleaner 1. In the following description, the front side of the paper surface of FIG. 1 where the front panel 3 of the air purifier 1 is arranged is referred to as “front”, and the back side of the paper surface of FIG. 1 where the suction port 6 is disposed is referred to as “rear”. . Also, “left, right” used in the following description is “left, right” in FIG.

An upper panel portion 5 is provided on the upper portion of the main casing 2, and a substantially oval outlet 7 that is long in the left-right direction is disposed on the upper panel portion 5 as shown in FIG. 2. The air outlet 7 is an opening for blowing the air cleaned by the air cleaner 1 to the outside of the air cleaner 1. The

side panels

4 and 4 are provided with

handle portions

41 and 41. This handle portion 41 is provided in consideration of convenience when the air cleaner 1 is lifted and transported. In addition, the humidification tank for the humidification filter mentioned later etc. may be arrange | positioned at one or both of the

side panels

4 and 4. FIG.

The front panel 3 is provided with various operation buttons, display lamps and the like. The front panel 3 is detachably attached to the main body casing 2 so as to cover a part of the front surface and side surfaces of the main body casing 2. The front panel 3 is attached as a sound insulation member for preventing noise generated by a sirocco fan or a motor, which will be described later, from leaking out of the apparatus during operation of the apparatus. It is also to ensure the beauty of the.

Next, the internal structure of the air cleaner 1 will be described. FIG. 3 is a longitudinal sectional view schematically showing the configuration of the air cleaner 1 according to the embodiment of the present invention. FIG. 4 is a partially broken front view showing the configuration of the air cleaner 1 according to the embodiment of the present invention.

As shown in FIGS. 3 and 4, a dust collection filter 10 that performs dust collection processing on the air sucked from the suction port 6 is disposed in the air cleaner 1 so as to be close to the suction port 6. It is installed. On the front side of the dust collection filter 10, a humidification filter 11 that performs a humidification process on the air that has been subjected to the dust collection process is disposed. A sirocco fan 12 is arranged on the front side of the humidifying filter 11 so that the suction surface 12B faces the humidifying filter 11. The sirocco fan 12 is driven by a motor (not shown) and rotates around the rotating shaft 12A. In FIG. 4, the outer contour of the sirocco fan 12 is shown by a thick broken line. The air passage 13 is configured by a lower air passage 13A formed so as to surround the sirocco fan 12 and the front surface side, and an upper air passage 13B extending upward from the lower air passage 13A. The air passage 13 communicates with the air outlet 7 provided in the upper part of the main casing 2.

A communication hole 14 is formed in the lower air passage 13A so as to face the suction surface 12B of the sirocco fan 12. In the upper air passage 13B, an ion generator 15 is provided immediately above the portion where the communication hole 14 is formed. The ion generator 15 includes an ion generation electrode that generates ions and a holding body that holds the ion generation electrode, and ionizes oxygen or moisture in the air by applying an AC voltage to the ion generation electrode. And at least one of positive ions and negative ions is generated. The generated ions are discharged into the room from the outlet 7 by the wind generated by the sirocco fan 12. The released ions can be removed by decomposing or inactivating floating bacteria, harmful substances, viruses, and molecules that cause odors floating in the air. Therefore, in the air cleaner 1, effects such as sterilization and indoor deodorization can be obtained by the mechanism of the ion generator 15.

(Blower passage)
As shown in FIGS. 3 and 4, the air passage 13 includes a lower air passage 13 A and an upper air passage 13 B. The lower air passage 13A is formed so as to cover the sirocco fan 12 from the circumferential direction and the front and rear surface sides. The lower air passage 13A is formed in a cylindrical shape so as to surround the sirocco fan 12 from the circumferential direction along the outer periphery of the sirocco fan 12, and includes a peripheral surface part 131 having an opening 131A, a front surface of the sirocco fan 12, It is connected to the peripheral surface portion 131 on the rear surface side, and is constituted by an end surface portion 132 that covers the front surface and the rear surface side of the sirocco fan 12. The end surface 132 is formed with a communication hole 14 facing the suction surface 12B of the sirocco fan 12 so that air taken into the main body casing 2 is guided to the sirocco fan 12 on the rear surface side.

The upper air passage 13B is formed in a rectangular tube shape continuously from the lower air passage 13A in the upward direction. The upper air passage 13B is constituted by four side walls 133 to 136. The left side wall 133 extends from one end side in the circumferential direction of the opening portion 131 A of the peripheral surface portion 131 in the direction of the substantially tangential line S of the circumference of the sirocco fan 12 and is connected to the outlet 7. The right side wall 134 faces the left side wall 133, extends from the other end side in the circumferential direction of the opening 131 A of the peripheral surface portion 131 so as to incline toward the left side wall 133, and is connected to the outlet 7. The front side wall 135 and the rear side wall 136, as a pair of side plate portions, blow out so as to sandwich the left side wall 133 and the right side wall 134 from one end side and the other end side in the direction of the rotating shaft 12A of the sirocco fan 12, respectively. It extends towards the mouth 7. Moreover, the front side wall 135 and the rear side wall 136 extend so as to be close to each other from the lower air passage 13 A toward the outlet 7 while being inclined substantially toward the rear surface. A holder for the ion generator 15 is attached to a substantially central portion in the vertical direction of the rear side wall 136 directly above the communication hole 14 and directly below the blowout port 7. In addition, a hole that opens to the upper air passage 13B is formed at the ion generator attachment portion of the rear side wall 136, and the ion generating electrode is mounted with the holding body attached to the rear side wall 136 as shown in FIG. Is arranged in the hole, and the ion generating electrode generates ions in the air guided to the upper air passage 13B.

(Outlet)
The blowout port 7 has a substantially long cylindrical shape extending downward from an opening provided in the upper panel portion 5, and as shown in FIGS. 3 and 4, the sirocco fan is long in the left-right direction. 12 is divided into two outlets, a first outlet 72 and a second outlet 73, by a partition member 71 disposed in the middle in the front-rear direction. The first outlet 72 is disposed on the rear side wall 136 to which the ion generator 15 is attached, and the second outlet 73 is disposed on the front side wall 135 side.

Each of the first outlet 72 and the second outlet 73 is provided with louvers 74 and 75 for adjusting the direction of air. In addition, the louvers 74 and 75 have a function of preventing troubles and taking safety measures such as preventing foreign matter from entering the air passage and preventing hands and fingers from entering. The partition member 71 rises from the louver 74, the base is attached to the louver 74, and a deflection portion 71 A extending toward the front side of the air purifier 1 is formed at the tip. Thereby, the air sent out from the sirocco fan 12 toward the blowout port 7 by centrifugal force is diverted to the partition member 71, and the air guided to the first blowout port 72 is directed toward the rear surface side of the air cleaner 1. The air blown upward and guided to the second blow-out port 73 is blown to the front side of the air cleaner 1 by the deflecting portion 71 A of the partition member 71.

(the flow of air)
Next, the flow of air in the air cleaner 1 will be described. First, when the sirocco fan 12 is rotationally driven by a motor, negative pressure is generated in the space of the main body casing 2 behind the sirocco fan 12, and as shown in FIG. 3, the suction port 6 located in the main body casing 2 is used. Thus, indoor air is taken into the main casing 2.

As shown in FIG. 3, when the air taken into the main body casing 2 passes through the dust collection filter 10 and the humidification filter 11 in order, the dust collection process and the humidification process are performed and provided in the lower air passage 13A. It passes through the formed communication hole 14. Next, the air that has passed through the communication hole 14 is blown outward from the circumferential surface of the sirocco fan 12 as shown in FIGS. 3 and 4. The air thus blown out is guided to the blowout port 7 by the blower passage 13 and is sent out into the room together with the ions generated by the ion generator 15. In FIGS. 3 and 4, such a series of air flows is indicated by arrows (outlined).

In the air cleaner 1, the air outlet 7 is divided into two air outlets, a first air outlet 72 and a second air outlet 73, by a partition member 71. The air guided to the blowing port 7 is blown upward from the first blowing port 72 toward the rear surface side of the air cleaner 1 and blown to the front side from the second blowing port 73.

In the air cleaner 1 described above, as shown in FIGS. 3 and 4, in the upper air passage 13 B, the left side wall 133 is arranged around the circumference of the sirocco fan 12 from one end side in the circumferential direction of the opening 131 A of the peripheral surface portion 131. It extends substantially in the direction of the tangent S and is connected to the outlet 7. The right side wall 134 faces the left side wall 133, extends from the other end side in the circumferential direction of the peripheral surface portion 131 so as to incline toward the left side wall 133, and is connected to the outlet 7. The sirocco fan 12 rotates in the clockwise direction of FIG. 4, and the air sent toward the outlet 7 by the centrifugal force of the sirocco fan 12 has a large air volume on the right side wall 134 side and the air volume on the left side wall 133 side. Less. Therefore, the air is blown toward the right side wall 134 at a relatively high wind speed, and is blown toward the left side wall 133 at a relatively low wind speed. At this time, the air blown from the sirocco fan 12 at a relatively high wind speed tends to flow along the right side wall 134, and the air toward the left side wall 133 due to the inclination of the right side wall 134 toward the left side. Will result in a flow component.

As a result, air from the sirocco fan 12 is rectified in the air blowing path 13 and blown out to the outlet 7, and the amount of air blown on the right side wall 134 side in the air blowing path 13 is the amount of air blown on the left side wall 133 side. Therefore, air is blown out more uniformly over the longitudinal direction of the blowout port 7. Further, the rectified wind passes through the vicinity of the ion generator 15 and is generated from the electrode on which the ion generator 15 is located by causing a plurality of ion generation electrodes arranged side by side on the ion generator 15 without any turbulent flow. The emitted ions are emitted without interfering or attenuating with ions of other electrodes.

Further, the left side wall 133 extends from one end side in the circumferential direction of the opening 131A of the peripheral surface portion 131 in the direction of the substantially tangent S of the circumference of the sirocco fan 12 and is connected to the blowout port 7, and the right side wall 134 is on the left side. The width of the air passage 13 in the left-right direction is opposed to the wall 133 and extends from the other end in the circumferential direction of the opening 131A of the peripheral surface portion 131 so as to incline toward the left side wall 133 and is connected to the outlet 7. Will be narrower than before. Thereby, the wind speed can be increased in the air passage 13. The air blown out from the sirocco fan 12 hits the ion generating electrode of the ion generator 15 at a high speed, and the ions generated from the ion generator 15 can be efficiently released into the room.

In the air cleaner 1 according to the present embodiment, the front side wall 135 and the rear side wall 136 are substantially inclined so as to face the rear surface side so as to be close to each other toward the outlet 7 from the lower air passage 13A. An ion generator 15 is attached to a portion of the rear side wall 136 that extends and is almost directly above the communication hole 14 and almost directly below the blowout port 7. As indicated by the arrows (outlined) in FIG. 3, the sirocco fan 12 is close to the suction port 6 on the rear side wall 136 side, so that the wind pressure is relatively high, and the suction side is on the front side wall 135 side. Since the sirocco fan 12 is far from the mouth 6, the wind pressure is relatively low. Thereby, the air sent out from the sirocco fan 12 strikes the ion generating electrode of the ion generator 15 attached to the rear side wall 136 at a relatively high speed. Ions generated from the ion generator 15 can be released into the room more efficiently.

As shown in FIG. 3, the outlet 7 is divided into two outlets, a first outlet 72 and a second outlet 73, by the partition material 71. The air sent from the sirocco fan 12 and guided to the first outlet 72 along the rear side wall 136 is blown upward toward the rear surface side of the air cleaner 1 at a relatively high wind speed, and the front side wall 135. The air guided to the second outlet 73 is blown out to the front side of the air cleaner 1 at a relatively low wind speed.

FIG. 5 is an explanatory view schematically showing the flow of air in the room by the air cleaner according to the present embodiment. As shown in FIG. 5, when the air cleaner 1 is installed in a room so that the suction port, that is, the rear surface side faces the wall, the air cleaner 1 moves toward the rear surface side of the air cleaner 1 at a relatively high wind speed from the outlet. The air blown out is reflected by the wall and blown out to the center of the room. Thereby, air can be blown out to the distance of the room. Further, the suction force by the rotation of the sirocco fan can suck the air in the room into the air cleaner 1 and further improve the air flow. By adopting the air cleaner 1 according to the present embodiment, it is possible to suck up dust far away from the room quickly.

Hereinafter, the present invention will be described in detail based on examples and comparative examples.
Example 1
FIG. 6 is a partially broken front view showing the configuration of the air cleaner 1 according to the first embodiment. As shown in FIG. 6, in the air cleaner 1 according to the first embodiment, the left side wall 133 extends in the direction of the substantially tangent S of the circumference of the sirocco fan 12 and is in the vertical direction (indicated by a broken line). It is comprised so that it may incline 35 degrees with respect to. The right side wall 134 faces the left side wall 133 and extends from the other end side in the circumferential direction of the opening 131A of the peripheral surface portion 131 toward the left side wall 133 so as to be inclined by 14 ° with respect to the vertical direction. The ion generator 15 is attached to the rear side wall 136. In the air outlet 7 of the air cleaner 1 configured as described above, the opening length W in the left-right direction of the sirocco fan 12 is 200 mm.

(Example 2)
FIG. 7 is a partially cutaway front view showing the configuration of the air cleaner 1 according to the second embodiment. As shown in FIG. 7, in the air cleaner 1 according to the second embodiment, the left side wall 133 extends in the direction of the substantially tangential line S of the circumference of the sirocco fan 12, and the vertical direction (indicated by a broken line) To the outlet 7 away from the right side wall 134 so as to be inclined at 44 °. The right side wall 134 is opposed to the left side wall 133 and extends from the other end side in the circumferential direction of the opening 131A of the peripheral surface portion 131 toward the left side wall 133 so as to be inclined by 6 ° with respect to the vertical direction. The ion generator 15 is attached to the rear side wall 136. The opening length W of the sirocco fan 12 in the left-right direction is 260 mm at the air outlet 7 of the air cleaner 1 configured as described above.

(Comparative Example 1)
The air cleaner 1 according to the comparative example 1 is the same as the example 2 except that the ion generator 15 is attached to the front side wall 135 instead of the attachment position of the ion generator 15 of the example 2. Obtained.

About the air cleaner 1 of Example 1 and Comparative Example 1, the blown wind speed was measured. FIG. 8 is a schematic diagram showing measurement points of wind speed. As the air volume is each 3.6m ^³ /min,6.5m ³ / min, to operate the air purifier 1, as shown in FIG. 8, a vicinity of the air outlet 7, the front side of the product and The wind speed was measured at six measurement points, including the left, middle, and right of the rear side.

For the air cleaner 1 of Example 1, the results of wind speed measurement are shown in the table of FIG. 9A and the graph of FIG. 9B, and for the air cleaner 1 of Comparative Example 1, the results of wind speed measurement are shown in the table of FIG. 10A and FIG. This is shown in the graph. As shown in FIGS. 9A and 9B, it was confirmed that the air cleaner 1 of Example 1 blows out air almost uniformly at a high wind speed over the opening length of the outlet 7 without turbulent flow. On the other hand, as shown in FIG. 10, the air cleaner 1 of the comparative example 1 has a slower wind speed than the air cleaner 1 of the first embodiment, and the variation is remarkable. Admitted.

Next, the cause of the variation in the wind speed of the air cleaner 1 according to the comparative example 1 will be described. FIG. 11 is an explanatory view schematically showing the flow of air in the air cleaner 1 according to the comparative example 1. As shown in FIG. 11, in the air cleaner 1 of Comparative Example 1, the air blown from the sirocco fan 12 is applied to the left side wall 133 extending in the direction of the substantially tangential line S of the circumference of the sirocco fan 12. Since the left side wall 133 is inclined to move away from the right side wall 134 in the middle, the air flow component toward the inclined portion side of the left side wall 133 is generated, and the wind speed is reduced. Furthermore, outside air may be inhaled. In the region R between the direction of the substantially tangent S of the circumference of the sirocco fan 12 and the inclined portion of the left side wall 133, it can be estimated that turbulent flow occurs. In FIG. 11, this turbulent flow generation region R is indicated by hatching.

Further, in the air cleaner 1 of Comparative Example 1, the right side wall 134 extends from the other end side in the circumferential direction of the peripheral surface portion 131 toward the left side wall 133 so as to be inclined by 6 ° with respect to the vertical direction. The air sent out by the sirocco fan 12 toward the right side wall 134 is blown out at a relatively high wind speed. Since the right side wall 134 extends almost without inclination, the sent air is blown out from the outlet 7 along the right side wall 134 with almost no decrease in the wind speed. Therefore, in the air cleaner 1 of the comparative example 1, the air blown from the blowout port 7 has the wind speed greatly reduced on the left side with respect to the right side, resulting in variations in wind speed.

For the air cleaner 1 of Example 2 and Comparative Example 1, the number of ions generated was measured. The number of ions was measured by operating the air purifier 1 in the medium operation mode and the strong operation mode, respectively, and measuring the number of ions at approximately the center of the room away from the air purifier 1 by 1.2 m.

For the air cleaner 1 of Example 2 and Comparative Example 1, the measurement results of the number of ions are shown in the table of FIG. 12A and the graph of FIG. 12B. As shown in FIGS. 12A and 12B, it was confirmed that the air cleaner 1 of Example 2 delivered 7249 ions in the middle operation mode and 13819 ions in the strong operation mode. On the other hand, it was confirmed that the air cleaner 1 of Comparative Example 1 delivered 6274 ions in the middle operation mode and 11304 ions in the strong operation mode. In the air cleaner 1 of Example 2, the generated ions can be released into the room more efficiently, and 16% more ions are emitted into the room in the middle operation mode and 22% in the strong operation mode than in the comparative example 1. can do. In the air cleaner 1 according to the second embodiment, the ion generator 15 is attached to the rear side wall 136, so that the air sent from the sirocco fan 12 is generated on the rear side wall 136 at a relatively high wind speed. The ions hit the ion generating electrode of the machine 15 and are extracted more effectively.

The embodiment of the present invention has been described in detail above, but the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the present invention.

For example, in the embodiment, the first blowout port 72 and the second blowout port 73 employ fixed louvers 74 and 75 as louvers. In addition, a louver that can change the blowout angle is arranged. You may make it install. Thereby, the freedom degree of the blowing direction of air with high ion concentration is raised, As a result, the blowing of the air according to the shape and size of a room can be performed, and more effective air purification is performed. be able to.

The left side wall 133 extends in the direction of the tangent S of the circumference of the sirocco fan 12 and is inclined by 35 ° with respect to the vertical direction. The right side wall 134 faces the left side wall 133 and faces the left side wall 133. Thus, the effect of the present invention has been described with reference to an air cleaner configured to be inclined by 14 ° with respect to the vertical direction. However, the angle of inclination of the left side wall 133 and the right side wall 134 is merely an example, and the present invention is not limited to this. The right side wall 134 has an angle of 21 ° or less with the left side wall 133. What is necessary is just to comprise so that it may have. It is further preferable that the right side wall 134 and the left side wall 133 extend so as to be substantially parallel. In other words, depending on the output of the air cleaner, the installation location, etc., the wind speed and the number of blown ions are measured using the inclination angle of the left side wall 133 and the right side wall 134 as parameters, and an appropriate range is adopted. Good.

In the above-described air purifier, a stationary type air purifier has been described as an example, but other than this, for example, a wall-mounted air purifier, a built-in type air purifier, an in-vehicle air purifier, It can also be applied to air conditioners or dehumidifiers.

The embodiment disclosed this time is an example, and the present invention is not limited to this. The present invention is defined by the terms of the claims, rather than the scope described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Air cleaner 7 Air outlet 12 Sirocco fan 12A Rotating shaft 13 Air path 13A Lower air path (1st air path part)
13B Upper air passage (second air passage section)
131 Peripheral surface portion 131A Opening portion 132 End surface portion 133 Left side wall (first side surface portion)
134 Right side wall (second side)
135 Front side wall (side plate, side)
136 Rear side wall (side plate, side)
14 Communication hole (opening)
15 Ion generator

Claims

With sirocco fans,
A blowout port for blowing out the air sent out by the sirocco fan;
A first air passage portion that is disposed so as to surround the sirocco fan and guides air sent from the sirocco fan, and a second air passage portion that blows air guided by the first air passage portion to the outlet. An air passage having
The first air passage portion is
Covering the outer periphery of the sirocco fan, including a cylindrical peripheral surface portion having an opening in a part of the circumferential direction,
The second air passage portion is
A first side surface portion disposed between a circumferential end of the opening portion of the peripheral surface portion and a part of the outlet and in a substantially tangential direction of the sirocco fan;
And a second side surface portion that is spaced apart and opposed to the first side surface portion and is disposed between the other end in the circumferential direction of the opening portion of the peripheral surface portion and the other portion of the outlet. apparatus.
The air blower according to claim 1, wherein the second side surface portion is inclined so as to have an angle of 21 ° or less between the second side surface portion and the first side surface portion.
The blower according to claim 2, wherein the first side surface portion and the second side surface portion are substantially parallel.
It is an air cleaner provided with the air blower as described in any one of Claim 1 to 3, and an ion generator,
The first air path portion is connected to a peripheral surface portion to cover both ends of the sirocco fan in the rotation axis direction, and further includes an end surface portion having an opening on one side for sucking air of the sirocco fan,
The second air passage portion further includes two side plate portions that sandwich the first side surface portion and the second side surface portion from both sides in the rotation axis direction of the sirocco fan,
Of the two side plate portions, the ion generator is disposed on a side plate portion located on the opening side of the end surface portion.
With sirocco fans,
A blowout port for blowing out the air sent out by the sirocco fan;
A first air passage portion that is disposed so as to surround the sirocco fan and guides the air sent from the sirocco fan, and a second air passage portion that blows air guided by the first air passage portion to the outlet. An air passage having
An ion generator for generating ions,
The first air passage part includes an end face part that covers the sirocco fan at both ends in the rotational axis direction of the sirocco fan and has an opening on one side for sucking air of the sirocco fan,
The second air passage portion is
Including two side portions disposed between the end surface portion and the outlet on both ends of the sirocco fan in the rotation axis direction;
Of the two side surfaces, the ion generator is disposed on a side surface located on the opening side.