Air blowing device

Abstract

To restrain variations in a wind speed of air blown from an air blowing device.SOLUTION: An air blowing device (1) comprises an air passage (14) formed between a discharge port (13) and a fan (20) in a casing (10), a first guide part (30) for guiding air in the air passage (14) to the discharge port (13), and a second guide part (40) arranged between the fan (20) and the first guide part (30) in the air passage (14), and partitioning the air passage (14) into a plurality of guide passages (41). The second guide part (40) comprises a guide surface (42) facing the guide passages (41), and for guiding the air toward the first guide part (30).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a blower device. [Background technology]

[0002] Patent Document 1 discloses a fan filter unit (blower) that blows out clean air. The fan filter unit of Patent Document 1 has a fan motor unit that houses a fan, and a filter unit in which a filter is provided. The air outlet of the fan motor unit and the air inlet of the filter unit are arranged opposite each other and are connected to each other. This connecting portion is provided with a guide section that guides the air blown out from the fan to the top of the filter unit. Guide plates are provided on the ventilation surface of the guide section, sandwiching the center of the ventilation passage. By providing the guide plates on the ventilation surface, the air blown out from the fan is evenly supplied to the upstream side of the filter unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5343318 Summary of the Invention [Problem to be solved by the invention]

[0004] The air blown out from the fan contains air inclined in various directions. Therefore, there is variation in the wind speed of the air blown out from the fan. In the blowing device as disclosed in Patent Document 1, such variation in wind speed of the air blown out from the fan is not taken into consideration. Therefore, even after the air blown out from the fan with variation passes through the guide plate, this variation remains. Then, when the air with such variation is blown out from the blowing port of the blowing device, there is a problem that non-uniform wind is blown out from the blowing device.

[0005] An object of the present disclosure is to suppress variation in the wind speed of air blown out from a blower device. [Means for solving the problem]

[0006] The first aspect is directed to a blower (1). The blower (1) includes a casing (10) in which an air outlet (13) is formed, a fan (20) housed in the casing (10), an air passage (14) formed in the casing (10) between the air outlet (13) and the fan (20), a first guide portion (30) that guides air in the air passage (14) to the air outlet (13), and a second guide portion (40) that is disposed in the air passage (14) between the fan (20) and the first guide portion (30) and divides the air passage (14) into a plurality of guide passages (41). The second guide portion (40) has a guide surface (42) that faces the guide passage (41) and guides air toward the first guide portion (30).

[0007] In the first aspect, the second guide portion (40) is disposed between the fan (20) and the first guide portion (30) in the air passage. The second guide portion (40) guides air toward the first guide portion (30). This makes it possible to align the direction of the uneven air contained in the air discharged from the fan (20) toward the first guide portion (30). This makes it possible to reduce the unevenness of the air blown out from the air outlet (13).

[0008] In the second aspect, in the first aspect, the guide passages (41) face in the same direction.

[0009] In the second embodiment, the guide passages (41) face in the same direction, so that the flow of air discharged from the fan (20) can be aligned in one direction.

[0010] In a third aspect, in the first or second aspect, the second guide portion (40) straightens the air discharged from the fan (20).

[0011] In the third aspect, the air discharged from the fan (20) is straightened by passing through the second guide portion (40). This makes it possible to suppress turbulence of the air discharged from the fan (20), thereby further suppressing variation in the air blown out from the air outlet (13).

[0012] In a fourth aspect, in the third aspect, the cross-sectional shape of the guide passage (41) is polygonal.

[0013] In the fourth aspect, the cross-sectional shape of the guide passage (41) is polygonal, which can suppress turbulence of the air discharged from the fan (20) that is inclined in various directions, thereby making it possible to regulate the flow of air in the air passage (14) toward the first guide part (30).

[0014] In a fifth aspect, in any one of the first to fourth aspects, the first guide portion (30) and the second guide portion (40) are arranged in a first direction, and the guide passage (41) extends in the first direction.

[0015] In the fifth aspect, the guide passage (41) extends in the first direction, and therefore, as the air passes through the guide passage (41), the flow of the air can be adjusted toward the first guide part (30).

[0016] A sixth aspect is any one of the first to fifth aspects, wherein the first guide portion (30) and the second guide portion (40) are arranged in a first direction, the fan (20) is disposed on one end side in the first direction and blows out air toward the other end side in the first direction, and the guide passage (41) guides the air in the first direction.

[0017] The fan (20) blows air toward the other end side in the first direction, and some of the air blown out from the fan (20) flows in a direction slightly intersecting the first direction. In the sixth aspect, the guide passage (41) guides the air in the first direction, and therefore, when the air discharged from the fan (20) passes through the guide passage (41), the airflow intersecting the first direction can be adjusted to flow in the first direction and guided toward the first guide part (30).

[0018] A seventh aspect is the fifth or sixth aspect, wherein the fan (20) is a centrifugal fan, and the guide surface (42) is aligned along the rotation axis direction of the fan (20) and the first direction.

[0019] The air discharged from the centrifugal fan (20) flows at an angle to the rotation direction of the centrifugal fan (20) with respect to the first direction. In contrast, in the seventh aspect, when the air discharged from the centrifugal fan (20) passes through the guide passage (41), the air hits a guide surface (42) that is aligned with the rotation axis direction of the centrifugal fan (20) and the first direction. This changes the direction of the airflow that was inclined toward the rotation direction of the centrifugal fan (20) to the first direction. As a result, it is possible to suppress variation in the air blown out from the outlet (13) of the blower (1).

[0020] An eighth aspect is any one of the fifth to seventh aspects, wherein the fan (20) is a centrifugal fan, and is disposed at an angle such that the discharge direction of the fan (20) is in the first direction.

[0021] In the eighth aspect, the centrifugal fan (20) is disposed so that the discharge direction is the first direction, and therefore the air flow can be directed to the first direction to some extent before the air discharged from the centrifugal fan (20) flows into the second guide portion (40). This makes it possible to align the air discharged from the centrifugal fan (20), whose air speed distribution is uneven, more toward the first direction.

[0022] A ninth aspect is any one of the fifth to eighth aspects, wherein the first guide portion (30) includes a plurality of planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) arranged in the first direction, and a distance L between the planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) is 12 cm or less.

[0023] In the ninth aspect, since the distance L between the planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) of the first guide portion (30) is 12 cm or less, it is possible to suppress attenuation of the air passing between the planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a), and it is possible to reduce variation in the wind speed in the first direction of the air blown out from the air outlet (13).

[0024] A tenth aspect is any one of the first to ninth aspects, further comprising a third guide portion (50) that is disposed between the fan (20) and the second guide portion (40) in the air passage (14) and guides the air discharged from the fan (20) to the second guide portion (40).

[0025] In the tenth aspect, since the blower (1) is provided with the third guide portion (50), the air discharged from the fan (20) can be aligned in the direction of the second guide portion (40) before the air discharged from the fan (20) flows into the second guide portion (40).

[0026] In an eleventh aspect, in the tenth aspect, the third guide portion (50) has an air volume distribution portion (50A) that distributes the volume of air discharged from the fan (20).

[0027] In the eleventh aspect, since the third guide portion (50) has the air volume distribution portion (50A), it is possible to uniformly distribute the volume of air discharged from the fan (20), which varies.

[0028] A twelfth aspect is the tenth or eleventh aspect, wherein the third guide portion (50) has an airflow direction adjustment portion (50B) that adjusts the direction of the air discharged from the fan (20).

[0029] In the twelfth aspect, the third guide portion (50) has the airflow direction adjustment portion (50B), so that the direction of the air discharged from the fan (20) can be adjusted to a predetermined direction.

[0030] In a thirteenth aspect, in any one of the first to twelfth aspects, the fan (20) is a centrifugal fan, and the fan (20) is disposed such that the direction of the rotation axis of the fan (20) coincides with the blowing direction of the air blown out of the air outlet (13).

[0031] The centrifugal fan (20) is usually shaped so that its thickness is thin in the direction of its rotation axis. In the thirteenth aspect, the centrifugal fan (20) is arranged so that the direction of its rotation axis coincides with the blowing direction, so that the blower (1) can be made thinner in the blowing direction.

[0032] In a fourteenth aspect, in the thirteenth aspect, the fan (20) is disposed on the opposite side of the air passage (14) to the direction of rotation of the fan (20).

[0033] In the fourteenth aspect, the centrifugal fan (20) is disposed on the opposite side of the air passage (14) in the direction of rotation of the centrifugal fan (20), thereby making it possible to suppress the occurrence of pressure loss at the end of the air passage (14) on the side in the direction of rotation.

[0034] A fifteenth aspect is any one of the first to fourteenth aspects, wherein an average momentum per unit area is 0.05 kg / ms on a virtual plane (R) facing the air outlet (13) and having a wind speed of 0.2 m / s or more. 2 Above 0.75kg / ms 2 It produces airflow in the following ranges:

[0035] In the fifteenth aspect, the comfort of the space to which the air blown out from the air blower (1) is supplied can be maintained, and the ventilation efficiency can be improved. [Brief description of the drawings]

[0036] [Figure 1] FIG. 1 is a perspective view showing the appearance of the blower device of the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Diagram 3]FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view of a honeycomb. [Diagram 5] FIG. 5 is a block diagram showing the configuration of the control unit. [Figure 6] FIG. 6 is an explanatory diagram showing an imaginary surface generated by air blown out from a blower. [Figure 7] FIG. 7 is an explanatory diagram showing a schematic view of the air flow in the blower. [Figure 8] FIG. 8 is an explanatory diagram showing the wind speed distribution at the outlet of the centrifugal fan. [Figure 9] FIG. 9 is a diagram corresponding to FIG. 2, for explaining the state of wind speed in an air passage in a conventional blower. [Figure 10] FIG. 10 is a diagram corresponding to FIG. 2, for explaining the state of wind speed in the air passage in the blower device of the first embodiment. [Figure 11] FIG. 11 is a diagram corresponding to FIG. 2 of the second embodiment. [Figure 12] FIG. 12 is an enlarged view of the periphery of the fan, illustrating the third guide portion of the first modification of the second embodiment. [Figure 13] FIG. 13 is an enlarged view of the periphery of the fan, illustrating the third guide portion of the second modification of the second embodiment. [Figure 14] FIG. 14 is a diagram corresponding to FIG. 2 of the third embodiment. [Figure 15] FIG. 15 is a view corresponding to FIG. 3 and showing the arrangement of fans in another embodiment. [Figure 16] FIG. 16 is a view corresponding to FIG. 1, showing the arrangement of fans in another embodiment. [Figure 17] FIG. 17 is a view corresponding to FIG. 2 and showing the arrangement of fans in another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible within the scope of the technical idea of ​​the present disclosure. Since each drawing is intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for easy understanding.

[0038] First Embodiment The blower of the first embodiment will be described.

[0039] (1) Blower The blower (1) is placed in an indoor space such as an office or a commercial facility. As shown in Figures 1 to 3, the blower (1) includes a casing (10), a fan (20), a first guide portion (30), and a second guide portion (40). The casing (10) accommodates the fan (20), the first guide portion (30), and the second guide portion (40).

[0040] In the following description, "upper," "lower," "left," "right," "front," and "rear" refer to directions when the blower device (1) is viewed from the front as shown in Fig. 1. The front of the blower device (1) is the side surface of the casing (10) in which an air outlet (13) described below is provided.

[0041] (1-1) Casing 1, the casing (10) is formed in a rectangular parallelepiped shape that is relatively short in depth (length in the front-rear direction) and relatively long in width (length in the left-right direction). The casing (10) has a left side plate (10a) and a right side plate (10b) arranged opposite each other in the left-right direction, a front side plate (10c) and a rear side plate (10d) arranged opposite each other in the front-rear direction, and a top plate (10e) and a bottom plate (10f) arranged opposite each other in the up-down direction.

[0042] The casing (10) has a middle plate (10g). The middle plate (10g) is provided in the center of the casing (10) in the up-down direction. The middle plate (10g) extends in the left-right direction along the top plate (10e) and the bottom plate (10f). As shown in Figs. 2 and 3, a substantially rectangular through hole (18) that is long in the left-right direction is formed on the rear side of the middle plate (10g). A second guide portion (40) is disposed in the through hole (18). The casing (10) of this embodiment has a width of approximately 150 cm, a height of approximately 170 cm, and a depth of approximately 30 cm.

[0043] As shown in FIGS. 2 and 3, the casing (10) has a fan housing chamber (11), an inlet (12), an outlet (13), and an air passage (14).

[0044] The fan housing chamber (11) houses a fan (20). The fan housing chamber (11) is a space located on the right side within the casing (10). The fan housing chamber (11) is formed to the right of the middle plate (10g). The fan housing chamber (11) is formed in a substantially rectangular parallelepiped shape that is long in the up-down direction and thin in the front-rear direction. The fan housing chamber (11) houses a plurality of fans (20). In this embodiment, four fans (20) are arranged in the fan housing chamber (11). The number of fans (20) shown here is merely an example. The fan housing chamber (11) may house one fan (20).

[0045] The suction port (12) is an opening for sucking air from the indoor space into the fan housing chamber (11). The suction port (12) is formed on the right side of the front plate (10c) of the casing (10). The suction port (12) is formed to the right of the middle plate (10g). The suction port (12) communicates with the fan housing chamber (11). The suction port (12) is formed in a rectangular shape that is long in the vertical direction. A filter (15) is disposed in the suction port (12). The filter (15) is provided over the entire opening surface of the suction port (12). The filter (15) collects dust in the air in the indoor space. The air from the indoor space that flows in through the suction port (12) flows into the fan housing chamber (11) via the filter (15) and is then sucked into the fan (20).

[0046] The air outlet (13) is an opening for blowing air that has passed through the casing (10) into the indoor space. The air outlet (13) is formed on the left side of the front plate (10c) of the casing (10). The air outlet (13) is formed to the left of the middle plate (10g). The air outlet (13) communicates with the air passage (14). The air outlet (13) is formed in a rectangular shape that is elongated in the vertical direction. The opening area of ​​the air outlet (13) is smaller than the opening area of ​​the inlet (12).

[0047] A straightening member (16) is provided at the air outlet (13). The straightening member (16) straightens the flow direction of the air that has flowed into the straightening member (16) to a predetermined direction. The straightening member (16) is disposed over the entire opening surface of the air outlet (13). The straightening member (16) of this embodiment is a member having a honeycomb structure. The straightening member (16) has minute hexagonal columnar holes regularly arranged without gaps. The straightening member (16) is disposed so that the axis of the hole of the straightening member (16) is aligned in the front-rear direction. The air that has passed through the inside of the casing (10) is blown forward from the air outlet (13) via the straightening member (16).

[0048] The air passage (14) is formed in the casing (10) between the air outlet (13) and the discharge port (24) of the fan (20). The air passage (14) is a space through which air discharged from the fan (20) passes. The air passage (14) extends in the left-right direction along the rear surface of the casing (10). As shown in FIG. 3, the left end of the air passage (14) is closed by a closing plate (17). The air passage (14) has a first space (14a) and a second space (14b). The first space (14a) and the second space (14b) communicate with each other via a through hole (18) in the middle plate (10g). The first space (14a) is a space on the right side of the air passage (14). The second space (14b) is a space on the left side of the air passage (14).

[0049] The first space (14a) is formed in the fan housing chamber (11). The first space (14a) is formed in the fan housing chamber (11) between the discharge port (24) of the fan (20) and the through-hole (18) of the mid-plate (10g). Specifically, the first space (14a) is a space surrounded by the discharge port (24) of the fan (20), the through-hole (18) of the mid-plate (10g), a part of the rear plate (10d) of the casing (10), the first partition plate (61), the second partition plate (62), and the third partition plate (63).

[0050] As shown in FIG. 2, the first partition plate (61) is a flat plate connecting the upper edge of the discharge port (24) of the uppermost fan (20) and the upper edge of the through hole (18). The second partition plate (62) is a flat plate connecting the lower edge of the discharge port (24) of the lowermost fan (20) and the lower edge of the through hole (18). As shown in FIG. 3, the third partition plate (63) is a flat plate connecting the front edges of the discharge ports (24) of the four fans (20) and the front edges of the through hole (18). The third partition plate (63) extends in the left-right direction along the rear plate (10d) of the casing (10). The third partition plate (63) is formed in a substantially trapezoidal shape with the left bottom shorter than the right bottom. The first space (14a) is formed in a substantially rectangular prism shape. The cross-sectional area of ​​the first space (14a) decreases toward the left.

[0051] The second space (14b) is formed in the casing (10) between the air outlet (13) and the through hole (18) of the middle plate (10g). Specifically, the second space (14b) is a space surrounded by the opening surface of the air outlet (13), the through hole (18) of the middle plate (10g), the closure plate (17), a part of the rear plate (10d) of the casing (10), the fourth partition plate (64), and the fifth partition plate (65).

[0052] As shown in FIG. 3, the closure plate (17) is a flat plate disposed at the left end in the casing (10). The closure plate (17) extends in the up-down direction along the left plate (10a) of the casing (10). As shown in FIG. 2, the fourth partition plate (64) is a flat plate connecting the upper edge of the closure plate (17) to the upper edge of the through hole (18). The fifth partition plate (65) is a flat plate connecting the lower edge of the closure plate (17) to the lower edge of the through hole (18). The fourth partition plate (64) and the fifth partition plate (65) extend in the left-right direction. The second space (14b) is formed in a substantially rectangular parallelepiped shape. The air outlet (13) communicates with the second space (14b).

[0053] (1-2) Fans The fan (20) transports air to the air passage (14). The fan (20) is disposed at the inlet end of the air passage (14). The fan (20) is disposed on the bottom plate (10f). The fan (20) is disposed on the right side (one end in the left-right direction) of the casing (10). The fan (20) blows out air to the left side (the other end in the left-right direction).

[0054] The fan (20) of this embodiment is a centrifugal fan of a sirocco type. The fan (20) may be a centrifugal fan of a turbo type. The fan (20) has a rotating shaft (21), an impeller (22), and a scroll (23). The rotating shaft (21) is arranged along the front-rear direction. The impeller (22) rotates about the rotating shaft (21). The impeller (22) is driven by a motor (not shown). The motor is fixed to the rear plate (10d) of the casing (10). The scroll (23) is provided to surround the impeller (22). The scroll (23) rectifies the swirling flow generated by the centrifugal force of the impeller (22) in a predetermined direction.

[0055] A discharge port (24) is formed at the tip of the scroll (23) through which the air rectified by the scroll (23) is discharged. The discharge port (24) is formed in a substantially rectangular shape. The opening surface of the discharge port (24) faces the first guide portion (30). In this embodiment, the opening surface of the discharge port (24) extends in the vertical direction.

[0056] Here, the thickness of a centrifugal fan is usually thin in the direction of its rotation axis. In this embodiment, the direction of the rotation axis of the fan (20) coincides with the blowing direction of air from the air outlet (13). This allows the blower device (1) to be made thinner in the blowing direction (front-rear direction).

[0057] (1-3) 1st information section The first guide portion (30) is disposed in the second space (14b) of the air passage (14). The first guide portion (30) guides the air in the air passage (14) to the air outlet (13). The first guide portion (30) overlaps with the air outlet (13) in a front view. The first guide portion (30) changes the flow direction of the air in the air passage (14) so ​​that the air in the air passage (14) flows toward the air outlet (13).

[0058] 2 and 3, the first guide portion (30) has a plurality of (seven in this embodiment) guide members (31, 32, 33, 34, 35, 36, 37). Specifically, the first guide portion (30) has first to seventh guide members (31, 32, 33, 34, 35, 36, 37). Note that the number of guide members (31, 32, 33, 34, 35, 36, 37) shown here is merely an example.

[0059] The multiple guide members (31, 32, 33, 34, 35, 36, 37) are arranged in the left-right direction. The first guide member (31) to the seventh guide member (37) are arranged in this order from right to left. The first guide member (31) is the rightmost guide member. The seventh guide member (37) is the leftmost guide member. The seventh guide member (37) is formed by the closure plate (17). That is, the closure plate (17) has a function of closing the left end of the air passage (14) and also a function of guiding air in the air passage (14) to the air outlet (13) as the seventh guide member (37).

[0060] Each of the guide members (31, 32, 33, 34, 35, 36, 37) extends from one end to the other end in the up-down direction of the air outlet (13). Each of the guide members (31, 32, 33, 34, 35, 36, 37) has a flat plate-shaped first planar member (31a, 32a, 33a, 34a, 35a, 36a, 37a). The first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) correspond to the planar member of the present disclosure. As shown in FIG. 3, the first to sixth guide members (31) to (36) are formed in an inverted L-shape in vertical cross section. The first guide member (31) to the sixth guide member (36) each have a first planar member (31a, 32a, 33a, 34a, 35a, 36a) and a flat second planar member (31b, 32b, 33b, 34b, 35b, 36b). The seventh guide member (37) only has a first planar member (37a). In other words, the seventh guide member (37) does not have a second planar member.

[0061] The first planar member (31a, 32a, 33a, 34a, 35a, 36a, 37a) is disposed facing the left side plate (10a) of the casing (10). The right side of the first planar member (31a, 32a, 33a, 34a, 35a, 36a, 37a) faces the second guide portion (40). The right side of the first planar member (31a, 32a, 33a, 34a, 35a, 36a, 37a) faces the fan (20). The second planar member (31b, 32b, 33b, 34b, 35b, 36b) is connected to the rear end of the first planar member (31a, 32a, 33a, 34a, 35a, 36a, 37a). The second planar members (31b, 32b, 33b, 34b, 35b, 36b) are disposed to face the rear plate (10d) of the casing (10). The second planar members (31b, 32b, 33b, 34b, 35b, 36b) of the first guide member (31) to the sixth guide member (36) have the same length in the left-right direction.

[0062] The first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) are different from one another in depth (length in the front-rear direction). Specifically, as shown in FIG. 3, the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) of the first guide member (31) to the seventh guide member (37) are formed so that their depth lengths decrease in this order. The guide members (31, 32, 33, 34, 35, 36, 37) are arranged so that the front ends of the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) are the same distance from the air outlet (13). As a result, the positions of the rear ends of the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) are different from one another in the front-rear direction. In other words, the positions of the rear ends of the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) of the respective guide members (31, 32, 33, 34, 35, 36, 37) shift rearward toward the left.

[0063] In detail, the rear end of the first planar member (31a) of the first guide member (31) is located to the right of the rear end of the first planar member (32a) of the second guide member (32). The rear end of the first planar member (32a) of the second guide member (32) is located to the right of the rear end of the first planar member (33a) of the third guide member (33). The rear end of the first planar member (33a) of the third guide member (33) is located to the right of the rear end of the first planar member (34a) of the fourth guide member (34). The rear end of the first planar member (34a) of the fourth guide member (34) is located to the right of the rear end of the first planar member (35a) of the fifth guide member (35). The rear end of the first planar member (35a) of the fifth guide member (35) is located to the right of the rear end of the first planar member (36a) of the sixth guide member (36). The rear end of the first planar member (36a) of the sixth guide member (36) is located to the right of the rear end of the first planar member (37a) of the seventh guide member (37).

[0064] As a result, as shown in FIG. 7, the air that flows into the second space (14b) and passes through the front surface of the second planar member (31b) of the first guide member (31) is guided to the right side surface of the first planar member (31a) of the first guide member (31) and is blown out from the area between the right edge of the air outlet (13) and the first guide member (31).

[0065] Of the air that passes through the rear surface of the second planar member (31b) of the first guide member (31), the air that passes through the front surface of the second planar member (32b) of the second guide member (32) is guided to the right side surface of the first planar member (32a) of the second guide member (32) and is blown out from the area between the first guide member (31) and the second guide member (32) at the air outlet (13).

[0066] Similarly, the air that has passed through the front surface of the second planar member (33b) of the third guide member (33) is guided to the right side of the first planar member (33a) of the third guide member (33). The air that has passed through the front surface of the second planar member (34b) of the fourth guide member (34) is guided to the right side of the first planar member (34a) of the fourth guide member (34). The air that has passed through the front surface of the second planar member (35b) of the fifth guide member (35) is guided to the right side of the first planar member (35a) of the fifth guide member (35). The air that has passed through the front surface of the second planar member (36b) of the sixth guide member (36) is guided to the right side of the first planar member (36a) of the sixth guide member (36). The air that has passed through the front surface of the rear plate (10d) of the casing (10) is guided to the right side of the first planar member (37a) of the seventh guide member (37). The air guided to the right side surfaces of the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) is blown out of the air outlet (13) from areas corresponding to the guide members (31, 32, 33, 34, 35, 36, 37).

[0067] In this manner, the guide members (31, 32, 33, 34, 35, 36, 37) are arranged such that the rear ends of the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) are shifted rearward toward the left, whereby the air flowing through the air passage (14) is divided into multiple flows by the first guide portion (30). The multiple flows of air are blown out from the air outlet (13) so that the flow rates in the left-right direction are uniform. This makes it possible to uniform the wind speed of the air blown out from the air outlet (13) in the left-right direction.

[0068] As shown in FIG. 3, the distance L between the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) in the left-right direction is 12 cm or less. If the distance L is greater than 12 cm, the air flow passing between the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) will be attenuated. Due to this attenuation of the air flow, the wind speed of the air blown out from the air outlet (13) will be non-uniform in the left-right direction. In contrast, since the distance L between the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) in the left-right direction is 12 cm or less, the attenuation of the air flow passing between the first planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) in the left-right direction can be suppressed. This makes it possible to reduce variation in the speed of the air blown out from the air outlet (13) in the left-right direction.

[0069] (1-4)Second information section The second guide portion (40) is disposed between the discharge port (24) of the fan (20) and the first guide portion (30) in the air passage (14). The second guide portion (40) is disposed at the right end of the second space (14b). As shown in FIG. 2, the second guide portion (40) is disposed without a gap from the upper end to the lower end of the through hole (18). As shown in FIG. 3, the second guide portion (40) is disposed without a gap from the front end to the rear end of the through hole (18). In other words, the second guide portion (40) is disposed so as to cross the air passage (14). The second guide portion (40) is disposed so as to separate the air passage (14) into the first space (14a) and the second space (14b). In other words, the first space (14a) communicates with the second space (14b) via the second guide portion (40).

[0070] The second guide portion (40) guides the air transferred from the fan (20) toward the first guide portion (30). When viewed from the left side, the second guide portion (40) overlaps with the first guide portion (30). The first guide portion (30) and the second guide portion (40) are arranged in the left-right direction along the back surface of the casing (10). In this embodiment, the left-right direction corresponds to the first direction in this disclosure.

[0071] As shown in FIGS. 2 to 4, the second guide portion (40) divides the air passage (14) into a plurality of guide passages (41). Specifically, as shown in FIG. 4, the second guide portion (40) has minute polygonal prism-shaped holes regularly arranged without gaps. The second guide portion (40) is formed in a lattice pattern. Each guide passage (41) of the second guide portion (40) is a minute passage with respect to the air passage (14). The plurality of guide passages (41) face in the same direction. In detail, all of the plurality of guide passages (41) face toward the first guide portion (30). In this embodiment, the guide passage (41) extends in the left-right direction. The guide passage (41) guides air in the left-right direction.

[0072] The second guide portion (40) straightens the air discharged from the fan (20). In this embodiment, the second guide portion (40) is a straightening member having a honeycomb structure. The straightening member suppresses turbulence in the flow of air that has flowed into the straightening member, and straightens the air flow in a predetermined direction. The second guide portion (40) straightens the flow of air discharged from the fan (20) in the left-right direction.

[0073] The cross-sectional shape of the guide passage (41) is polygonal. In this embodiment, the cross-sectional shape of the guide passage (41) is hexagonal. Note that the cross-section referred to here is a cross-section taken along a plane perpendicular to the left-right direction (first direction). The cross-sectional shape of the guide passage (41) may be a triangle, a rectangle, a pentagon, an octagon, or the like.

[0074] One of the multiple surfaces forming each guide passage (41) is configured as a guide surface (42). In other words, the guide surface (42) faces the air passage (14). The guide surface (42) guides air toward the first guide portion (30). The guide surface (42) is aligned along the rotation axis direction (in this embodiment, the front-rear direction) and the left-right direction (first direction) of the fan (20). The guide surface (42) is configured as a flat surface. The guide surface (42) may be slightly curved.

[0075] (1-5) Control section 5, the air blower (1) includes a control unit (90). The control unit (90) includes a CPU that executes a control program, and a memory that stores the control program, data required for executing the control program, and the like.

[0076] The control unit (90) controls the rotation speed of the fan (20). By controlling the rotation speed of the fan (20), the airflow of the air blown out from the air outlet (13) is adjusted so as to change irregularly within a predetermined momentum range.

[0077] (2) Fan control The air blower (1) of this embodiment blows air toward a first surface (R1) facing the air outlet (13). The first surface (R1) corresponds to a virtual surface (R) in this disclosure. The fan (20) blows air toward a first surface (R1) facing the air outlet (13) such that the average momentum p per unit area is 0.05 kg / ms 2 More than or equal to 0.75kg / ms 2 The airflow is controlled to generate an airflow that changes irregularly within the following range. The first surface (R1) is an area where the wind speed is 0.2 m / s or more. Explaining with reference to FIG. 6, the first surface (R1) is a surface that is perpendicular to the center line CL (a line extending forward from the center O of the air outlet (13)) and is formed with the center line CL as its center. Specifically, the first surface (R1) is a rectangular surface with a width of 0.6 m and a height of 0.5 m, centered at a point O1 on the center line CL that is 0.3 m away from the center O.

[0078] The average momentum p of the airflow blown out from the air outlet (13) of the blower (1) is expressed as the average momentum p [kg / ms 2 ] = air density ρ [kg / m 3 ]×area A[m 2 ]×Flow velocity v[m / s]×Flow velocity v[m / s] / Area A[m 2 This average momentum is a vector quantity with a direction. The average momentum p per unit area of ​​the fan (20) when the indoor environment is at room temperature of 20°C and 1 atm (standard atmospheric pressure) is 0.05 kg / ms 2 More than or equal to 0.75kg / ms 2 It is controlled to generate an air flow at the first surface (R1) that changes irregularly within the following range: The density ρ of air at a temperature of 20°C and a pressure of 1 atm is 0.166 kg / m 3 The average momentum p is 0.05kg / ms 2 More than or equal to 0.75kg / ms 2 The airflow in the following range, when converted to wind speed, is a range of 0.2 m / s or more and 0.8 m / s or less.

[0079] (3) Air flow from the blower Next, the air flow inside the casing (10) will be described with reference to Figure 7. The arrows in Figure 7 indicate the direction in which the air flows.

[0080] When the fan (20) starts operating, air from the indoor space is drawn in through the suction port (12). The air drawn in through the suction port (12) passes through the filter (15) and flows into the fan housing chamber (11). The air that has flowed into the fan housing chamber (11) is drawn in through the front surface of the scroll (23) of the fan (20) and discharged from the discharge port (24). The air discharged from the discharge port (24) flows into the first space (14a) of the air passage (14).

[0081] The air that has flowed into the first space (14a) flows leftward toward the second guide portion (40). The air that has reached the second guide portion (40) passes through the guide passage (41) of the second guide portion (40) and flows into the second space (14b). The air that has flowed into the second space (14b) flows leftward and then hits the guide members (31, 32, 33, 34, 35, 36, 37) of the first guide portion (30). As a result, the air that has flowed into the second space (14b) is diverted and redirected forward. The air that has been redirected forward is then blown out forward from the air outlet (13).

[0082] (4) Centrifugal fan exhaust air Next, the air discharged from the discharge port (24) of the centrifugal fan (20) will be described.

[0083] As shown in Fig. 8, in the centrifugal fan (20), a swirling flow is generated in the rotational direction by the impeller (22) rotating about a rotating shaft (21). The swirling flow is adjusted to a predetermined direction (upward in Fig. 8) by the scroll (23) and is discharged from a discharge port (24).

[0084] As shown by the outline arrow in Fig. 8, the air discharged from the discharge port (24) is discharged at a slight angle to the rotational direction with respect to the predetermined discharge direction (the up-down direction in Fig. 8), strictly speaking. This is because it is difficult for the scroll (23) to completely align the flow swirling in the rotational direction to the predetermined discharge direction.

[0085] Moreover, Fig. 8 shows a conceptual diagram of the wind speed distribution of the discharged air above the discharge port (24). As shown in the conceptual diagram of Fig. 8, the air discharged from the discharge port (24) forms a wind speed distribution such that the wind speed is relatively slow at both the left and right ends of the discharge port (24) due to the influence of a swirling flow and the wind speed is fast toward the right of the discharge port (24) (toward the front in the direction of rotation).

[0086] (5) Issues with conventional blowers FIG. 9 shows the wind speed in the air passage (14) of a conventional blower (100) equipped with a centrifugal fan (20). The white arrows in FIG. 9 diagrammatically show air passing through the second space (14b). The thickness of the white arrows in FIG. 9 indicates the magnitude of the wind speed. In detail, in FIG. 9, a thick white arrow indicates a high wind speed, and a thin white arrow indicates a low wind speed. The conventional blower (100) in FIG. 9 does not include a second guide portion (40), and is otherwise configured the same as the blower (1) of the present disclosure.

[0087] In the conventional blower (100) shown in Fig. 9, the fan (20) is disposed so that the direction of the rotation axis of the fan (20) coincides with the blowing direction of the air blown out of the air outlet (13). Therefore, as shown by the outline arrow in Fig. 9, the wind speed is high in the diagonal region from the lower right to the upper left in the second space (14b) of the air passage (14). The wind speed is low in the upper right corner region of the second space (14b) and in the lower left corner region of the second space (14b) compared to the diagonal region. Thus, the wind speed of the air flowing through the second space (14b) varies in the vertical and horizontal directions.

[0088] The variation in wind speed in the left-right direction can be equalized by dividing the flow in the left-right direction by the first guide portion (30). However, the air flowing through the second space (14b) still has variation in wind speed in the up-down direction. If air with such variation in wind speed is guided to the air outlet (13), the air blown out from the air outlet (13) will have a non-uniform wind speed.

[0089] 10, the air blower (1) of the present embodiment includes the second guide portion (40) that guides air to the first guide portion (30), and therefore the flow direction of the air discharged from the fan (20) can be adjusted to face the first guide portion (30). In particular, the air discharged from the fan (20) hits the guide surface (42) of the second guide portion (40), and the air flow is adjusted to the left and right.

[0090] More specifically, the air discharged from the fan (20) is slightly inclined toward the rotation direction of the fan (20) with respect to the left-right direction. When the air inclined toward the rotation direction passes through the guide passage (41) of the second guide part (40), it hits the guide surface (42). Because the guide surface (42) is aligned along the rotation direction and the left-right direction, the flow of the air that hits the guide surface (42) is aligned in the left-right direction.

[0091] In addition, since the second guide portion (40) has a plurality of minute guide passages (41) formed therein, when a flow having varying wind speed passes through the second guide portion (40), the wind speed is made uniform in the vertical direction.

[0092] As a result, as indicated by the white arrows in Figure 10, the air discharged from the fan (20) passes through the second guide portion (40), whereby the flow is regulated in the left-right direction and the wind speed is made uniform in the up-down direction.

[0093] Here, the fans (20) of this embodiment are disposed on the opposite side of the rotation direction of the fans (20) in the air passage (14). As shown in Fig. 10, in this embodiment, when the rotation direction of the fans is right-handed (clockwise), the four fans (20) are disposed generally on the lower side. In other words, when the midpoint of both ends in the vertical direction of the outlets (24) of the four fans (20) is M1 and the midpoint in the vertical direction of the air outlet (13) is M2, the midpoint M1 is located a predetermined distance below the midpoint M2.

[0094] By locating the fan (20) toward the opposite side of the rotation direction in this manner, the air discharged from the discharge port (24) at an angle to the rotation direction is less likely to hit the first partition plate (61) provided at the upper end of the fan (20). This makes it possible to reduce pressure loss occurring near the first partition plate (61). As a result, the air discharged by the fan (20) can flow smoothly.

[0095] (6) Air passage pressure In the blower (1) of this embodiment, one first space (14a) and one second space (14b) formed in the casing (10) communicate with each other through one through hole (18) in the middle plate (10g). The size of the outlet of the first space (14a) and the size of the inlet of the second space (14b) are substantially the same. In other words, one opening is not extremely narrower than the other opening. Therefore, the pressure in the second space (14b) of the air passage (14) is substantially the same as the pressure in the first space (14a). In other words, in the blower (1) of this embodiment, the pressure difference between the front and rear of the through hole (18) in the air passage (14) does not become large.

[0096] In addition, the second guide portion (40) provided in the through hole (18) of this embodiment is a member in which minute holes are closely spaced from one another, and therefore has a high aperture ratio. If the second guide portion (40) were a member with a low aperture ratio (for example, a member in which minute holes are formed at a predetermined interval) or a very fine filter, the pressure difference between the front and rear of the second guide portion (40) would be large. In contrast, the second guide portion (40) of this embodiment is a member with a high aperture ratio, and therefore the pressure difference between the front and rear of the through hole (18) in which the second guide portion (40) is provided is not large.

[0097] In this manner, in the air blower (1) of the present embodiment, the pressure difference in the air passage (14) between before and after the through hole (18) is not large. In other words, pressure loss is unlikely to occur in the air passage (14).

[0098] Furthermore, the blower (1) of this embodiment has one second space (14b) and one air outlet (13). The vertical lengths of the second space (14b) and the air outlet (13) are approximately the same, and the horizontal lengths of the second space (14b) and the air outlet (13) are approximately the same. Therefore, the size of the outlet of the second space (14b) and the size of the air outlet (13) are approximately the same. In other words, one opening is not extremely narrower than the other opening. Therefore, the pressure in the second space in the air passage (14) is approximately the same as the pressure outside the casing (10). In other words, in the blower (1) of this embodiment, the pressure difference before and after the air outlet (13) is not large.

[0099] The air outlet (13) of this embodiment is one large opening. The air outlet (13) has a high opening ratio because the airflow straightening member (16) is a member in which tiny holes are closely spaced from one another. Therefore, the pressure difference between the front and rear of the air outlet (13) in which the airflow straightening member (16) is provided is not large.

[0100] In this manner, in the air blower (1) of the present embodiment, the pressure difference before and after the air outlet (13) does not become large, that is, pressure loss is unlikely to occur in the air passage (14).

[0101] As described above, in the air blower (1) of this embodiment, the pressure difference in the air passage (14) before and after the through hole (18) and the pressure difference before and after the air outlet (13) are not large, so that pressure loss is unlikely to occur in the air passage (14). Therefore, there is no need to increase the capacity of the fan (20), and the fan (20) can be prevented from becoming large. In addition, in this embodiment, pressure loss is unlikely to occur in the air passage (14), so that a decrease in air blowing efficiency can be prevented.

[0102] Here, in the blower device (1) having a structure in which the pressure difference in the air passage (14) before and after the through hole (18) and the pressure difference before and after the air outlet (13) are not large as described above, if the through hole (18) is not provided with the second guide portion (40), the air discharged from the outlet (24) of the fan (20) will flow to the air outlet (13) as it is, containing air dispersed in various directions. In particular, when the fan (20) is a centrifugal fan, the air discharged from the fan (20) is inclined in the rotation direction of the fan (20).

[0103] In contrast, in the air blower (1) of the present embodiment, the second guide portion (40) is disposed in the through hole (18) of the middle plate (10g), so that the variable discharge air of the fan (20) can be straightened in the second guide portion (40) and the straightened air can be caused to flow to the air outlet (13).

[0104] As a result, the air blower (1) of the present embodiment can suppress an increase in pressure loss and can suppress variation in the air blown out from the air outlet (13). As a result, it is possible to provide the air blower (1) that has high air blowing efficiency and can blow out air in a uniform, planar shape.

[0105] (7) Features (7-1) The second guide portion (40) of the blower (1) divides the air passage (14) into a plurality of guide passages (41). The second guide portion (40) has a guide surface (42) that guides air toward the first guide portion (30). Therefore, the plurality of guide surfaces (42) can align the direction of the air that is contained in the air discharged from the fan (20) toward the first guide portion (30). This can reduce the variation in the air blown out from the air outlet (13).

[0106] (7-2) The guide passages (41) face in the same direction, so that the flow of air discharged from the fan (20) can be aligned in one direction.

[0107] (7-3) The second guide portion (40) straightens the air discharged from the fan (20). Therefore, the air discharged from the fan (20) is straightened by passing through the second guide portion (40). This makes it possible to suppress turbulence in the air discharged from the fan (20), thereby further suppressing variation in the air blown out from the air outlet (13).

[0108] (7-4) The cross-sectional shape of the guide passage (41) is polygonal, which can reduce turbulence in the air discharged from the fan (20) that is inclined in various directions, thereby regulating the flow of air in the air passage (14) toward the first guide part (30).

[0109] (7-5) The guide passage (41) extends in the left-right direction in which the first guide portion (30) and the second guide portion (40) are arranged. Therefore, by passing through the guide passage (41), the flow of air toward the first guide portion (30) can be regulated.

[0110] (7-6) The first guide portion (30) and the second guide portion (40) are arranged in the left-right direction. The fan (20) is disposed at one end in the left-right direction and blows out air toward the other end in the left-right direction. The guide passage (41) guides the air in the left-right direction.

[0111] Here, the fan (20) blows air toward the other end in the left-right direction, but the air blown out from the fan (20) contains air flowing in a direction slightly intersecting the left-right direction. In this embodiment, the guide passage (41) guides the air in the first direction, and therefore, by passing through the guide passage (41), the air discharged from the fan (20) can be guided toward the first guide part (30) while adjusting the airflow intersecting the left-right direction in the left-right direction.

[0112] (7-7) The fan (20) is a centrifugal fan. The guide surface (42) extends along the rotation axis and the left-right direction of the fan (20).

[0113] The air discharged from the centrifugal fan (20) flows at an inclination toward the rotation direction of the centrifugal fan (20) with respect to the left-right direction. In contrast, in this embodiment, when the air discharged from the centrifugal fan (20) passes through the guide passage (41), it hits a guide surface (42) that is aligned along the rotation axis direction and the left-right direction of the centrifugal fan (20). This changes the direction of the airflow that was inclined toward the rotation direction of the centrifugal fan (20) to the left-right direction. As a result, it is possible to suppress variation in the air blown out from the air outlet (13) of the blower (1).

[0114] (7-8) The first guide portion (30) includes a plurality of planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) arranged in the left-right direction. The distance L between the planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) is 12 cm or less. This makes it possible to suppress attenuation of air passing between the planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a), and to reduce variation in the vertical wind speed of the air blown out from the air outlet (13).

[0115] (7-9) The fan (20) is a centrifugal fan and is disposed so that the direction of the rotation axis of the fan (20) coincides with the blowing direction of air from the air outlet (13).

[0116] Here, the centrifugal fan (20) is usually shaped so that its thickness is thin in the direction of its rotation axis. In this embodiment, the centrifugal fan (20) is disposed so that the direction of its rotation axis coincides with the blowing direction, so that the blower (1) can be made thinner in the blowing direction.

[0117] (7-10) The fan (20) is disposed on the opposite side of the air passage (14) to the direction of rotation of the fan (20), thereby making it possible to suppress the occurrence of pressure loss at the end of the air passage (14) on the direction of rotation side.

[0118] (7-11) The air blower (1) of the present embodiment generates an airflow with an average momentum per unit area in the range of 0.05 kg / ms2 or more and 0.75 kg / ms2 or less on a virtual plane (R) that faces the air outlet (13) and has a wind speed of 0.2 m / s or more. This makes it possible to maintain the comfort of the space to which the air blown out from the air blower (1) is supplied and to improve ventilation efficiency.

[0119] (8) Variations The above embodiment may be modified as follows. In the following description, differences from the above embodiment will be mainly described.

[0120] (8-1) Variation 1 The second guide portion (40) of the blower (1) of the above embodiment may be formed of a plurality of cylinders. The cylinders in this modification have their axes extending in the left-right direction. In this modification as well, when the air discharged from the fan (20) passes through the second guide portion (40), it hits the inner surface of the cylinders, so that the direction of the airflow, which is inclined in various directions, is aligned in the left-right direction. This makes it possible to suppress variation in the air discharged from the air outlet (13).

[0121] In this modification, the cylinder of the second guide portion (40) may be short in the left-right direction and may extend from the discharge port (24) of the fan (20) to the through-hole (18) of the mid-plate (10g).

[0122] (8-2) Variation 2 The air passage (14) in the above embodiment may have a plurality of second spaces (14b) extending in the left-right direction, instead of one second space (14b). In other words, the single second space (14b) in the above embodiment may be divided in the up-down direction.

[0123] Specifically, the adjacent second spaces (14b) are arranged in the up-down direction via a partition plate extending in the left-right direction. That is, the adjacent second spaces (14b) are adjacent to each other. No space is formed between the adjacent second spaces (14b). The second spaces (14b) communicate with one first space (14a) via the through holes (18) formed in the middle plate (10g). One through hole (18) corresponds to one second space (14b). The second spaces (14b) communicate with the air outlet (13).

[0124] In the air blower (1) of this modified example, since no space is formed between the adjacent second spaces (14b), the pressure difference before and after the through hole (18) in the air passage (14) does not increase. The internal pressure does not increase. As a result, pressure loss is unlikely to occur in the air passage (14).

[0125] Second Embodiment A blower device of the second embodiment will be described. The blower device (1) of the present embodiment is the blower device (1) of the first embodiment with the addition of a third guide portion (50). Here, the blower device (1) of the present embodiment will be described with respect to the differences from the blower device (1) of the first embodiment. Note that the same components as those of the first embodiment will be denoted by the same reference numerals and will not be described again.

[0126] (1)Third information section 11, the third guide portion (50) is disposed in the air passage (14) between the fan (20) and the second guide portion (40). The third guide portion (50) is disposed in the first space (14a). The third guide portion (50) guides the air discharged from the fan (20) to the second guide portion (40).

[0127] The third guide portion (50) has a plurality of flaps (51, 52, 53) (12 in this embodiment). In this embodiment, three flaps (51, 52, 53) are provided for one fan (20). Specifically, a first flap (51), a second flap (52), and a third flap (53) are provided for one fan (20) in this order from the bottom. A first flow path (54) is formed between the first flap (51) and the second flap (52). A second flow path (55) is formed between the second flap (52) and the third flap (53). The number of flaps (51, 52, 53) shown here is merely an example. The flap (51, 52, 53) corresponding to one fan (20) is disposed on the left side of the one fan (20).

[0128] The multiple flaps (51, 52, 53) are arranged in the vertical direction. Each flap (51, 52, 53) is made of a flat plate. Each flap (51, 52, 53) is arranged to face the rotation direction of the fan (20). Each flap (51, 52, 53) rotates about a rotation shaft (not shown). The rotation shaft of each flap (51, 52, 53) extends in the front-rear direction. The rotation shaft is driven by a motor (not shown). The motor is fixed to the rear plate (10d) of the casing (10).

[0129] The air discharged from the outlet (24) of the fan (20) flows to the left and passes between the flaps (51, 52, 53). When the discharged air passes between the flaps (51, 52, 53), the airflow direction is adjusted so that the airflow is directed toward each of the second guide portions (40). The air whose airflow direction has been adjusted flows to the left through the second guide portion (40) and then flows into the second space (14b). In this manner, the provision of the third guide portion (50) in the blower device (1) makes it possible to adjust the airflow direction of the air discharged from the fan (20) toward the second guide portion (40).

[0130] The third guide portion (50) functions as an air volume distribution portion (50A) that distributes the flow rate of air discharged from the fan (20) by changing the distance between the flaps (51, 52, 53). In the third guide portion (50), the flaps (51, 52, 53) are movable so that the distance between the first flap (51) and the second flap (52) and the distance between the second flap (52) and the third flap (53) are different.

[0131] As described in the first embodiment, the wind speed of the air discharged from the centrifugal fan (20) varies in the vertical direction. Therefore, by changing the spacing between the flaps (51, 52, 53), the wind speed of the air flowing toward the second guide portion (40) can be made uniform in the vertical direction. Furthermore, by changing the spacing between the flaps (51, 52, 53), the wind speed in a predetermined area in the vertical direction of the air outlet (13) can be increased or decreased.

[0132] The third guide portion (50) also functions as an airflow direction adjustment portion (50B) that adjusts the direction of air discharged from the fan (20). In the third guide portion (50), the flaps (51, 52, 53) are movable so as to change the flow directions of the first flow path (54) and the second flow path (55). This allows the direction of the air discharged from the fan (20) to be adjusted to a predetermined direction.

[0133] In this way, by adjusting the direction of the discharged air, it is possible to blow out uniform air not only from the entire air outlet (13) but also to blow out strong and uniform air to a partial area of ​​the air outlet (13). For example, by changing the direction of each of the flaps (51, 52, 53) so that they face the center of the air passage (14), it is possible to blow out strong and uniform air from the center of the air outlet (13).

[0134] (2) Features (2-1) The air blower (1) of this embodiment includes a third guide portion (50). The third guide portion (50) is disposed between the fan (20) and the second guide portion (40) in the air passage (14), and guides the air discharged from the fan (20) to the second guide portion (40). This allows the air discharged from the fan (20) to be aligned in the direction of the second guide portion (40) before it flows into the second guide portion (40).

[0135] (2-2) The third guide portion (50) has an air volume distribution portion (50A) that distributes the volume of air discharged from the fan (20), thereby making it possible to evenly distribute the volume of air discharged from the fan (20), which varies.

[0136] (2-3) The third guide portion (50) has an airflow direction adjustment portion (50B) that adjusts the direction of air discharged from the fan (20), thereby making it possible to adjust the direction of the air discharged from the fan (20) to a predetermined direction.

[0137] (3) Modifications The above embodiment may be modified as follows. In the following description, differences from the above embodiment will be mainly described.

[0138] (3-1) Variation 1 The third guide portion (50) in the above embodiment may be configured to function only as the airflow distributor (50A). Specifically, as shown in FIG. 12, the flaps (51, 52, 53) are arranged so that the intervals between the flaps (51, 52, 53) are different. In this modification, the flaps (51, 52, 53) are fixed. In other words, the flaps (51, 52, 53) do not move. For example, the flaps (51, 52, 53) are fixed at a preset interval so that the air discharged from the centrifugal fan (20) is uniform in the left-right direction.

[0139] (3-2) Variation 2 The third guide portion (50) in the above embodiment may be configured to function only as an airflow direction adjustment portion (50B). Specifically, as shown in Fig. 13, the flaps (51, 52, 53) are movable so that the direction of the flow path formed between the flaps (51, 52, 53) can be changed. In this modification, the distance between the flaps (51, 52, 53) is fixed. In other words, the distance between the flaps (51, 52, 53) cannot be changed.

[0140] Third Embodiment A blower device of embodiment 3 will be described. The blower device (1) of this embodiment is the blower device (1) of embodiment 1, in which the attitude of the fan (20) is changed. Here, the blower device (1) of this embodiment will be described with respect to the differences from the blower device (1) of embodiment 1. Note that the same components as those of embodiment 1 will be denoted by the same reference numerals and will not be described again.

[0141] (1) Fans’ attitude As shown in Fig. 14, in this embodiment, three fans (20) are arranged in the fan housing chamber (11). The fans (20) are arranged so as to be inclined so that the discharge direction of the fans (20) is in the left-right direction (first direction). Specifically, the fans (20) are arranged so as to be inclined at a predetermined angle with respect to the vertical direction on the side opposite to the rotation direction of the fans (20).

[0142] As a result, the outlet (24) of the fan (20) is tilted at a predetermined angle from the vertical direction to the opposite side of the direction of rotation, so that the direction of air discharged from the outlet (24) of the fan (20) is in the left-right direction, and the wind speed of the air blown out of the air outlet (13) is less likely to vary in the vertical direction.

[0143] (2) Features The fan (20) is a centrifugal fan. The fan (20) is disposed at an angle such that the discharge direction of the fan (20) is in the left-right direction. This allows the air discharged from the centrifugal fan (20) to be directed to a certain extent in the left-right direction before it flows into the second guide portion (40). This allows the air discharged from the centrifugal fan (20), which has an uneven wind speed distribution, to be more uniform in the left-right direction.

[0144] (3) Modifications In the above embodiment, the air blower (1) may include a third guide portion (50). By including the third guide portion (50), the same effects as those of the second embodiment can be obtained.

[0145] (4) Reference example The air blower (1) of the above embodiment does not need to include the second guide portion (40). The air blower (1) of this reference example has the same configuration as the above embodiment except for the second guide portion (40). In other words, the air blower (1) includes a casing (10), a fan (20), and a first guide portion (30).

[0146] In this reference example, the air discharged from the fan (20) flows leftward and enters the first space (14a) of the air passage (14). The air that flows into the first space (14a) further flows leftward, passes through the through-hole (18) in the middle plate (10g), and enters the second space (14b). The subsequent air flow is the same as in the first embodiment.

[0147] In this reference example, as in the above embodiment, the fan (20) is disposed at an angle so that the air discharged from the fan (20) flows in the left-right direction, and thus the air is discharged to the left from the discharge port (24) of the fan (20). As a result, even if the second guide portion (40) is not provided, the air discharged from the fan (20) flows relatively straight to the left toward the first guide portion (30), and thus the variation in wind speed in the vertical direction in the air passage (14) is reduced. As a result, the wind speed of the air blown out of the air outlet (13) is less likely to vary in the vertical direction.

[0148] Other Embodiments The above embodiment, the above modified example, and the above reference example may be configured as follows.

[0149] As shown in Fig. 15, the fan (20) in each of the above embodiments may be disposed so that the direction of the rotation axis of the fan (20) is perpendicular to the blowing direction of the air blown out from the air outlet (13). Even in this case, the air discharged from the outlet (24) of the fan (20) varies in speed in the front-to-rear direction and includes air that is slightly inclined in various directions other than the front-to-rear direction. By providing the second guide portion (40) in the blower device (1), the flow of the air discharged from the fan (20) can be aligned in the left-to-right direction and directed toward the first guide portion (30).

[0150] The fan (20) in each of the above embodiments may be disposed on the left side in the casing (10). In this case, the air passage (14) extends in the left-right direction. The first guide portion (30) and the second guide portion (40) are arranged in the left-right direction (first direction).

[0151] The fan (20) in each of the above embodiments may be disposed on the lower or upper side within the casing (10). FIGS. 16 and 17 show an example in which the fan (20) is disposed on the lower side within the casing (10). In this case, the air passage (14) extends in the vertical direction. The first guide portion (30) and the second guide portion (40) are arranged in the vertical direction. In this embodiment, the vertical direction corresponds to the first direction in the present disclosure. Even in this case, the second guide portion (40) can adjust the flow of air discharged from the fan (20) in the vertical direction and direct it toward the first guide portion (30).

[0152] The fan (20) in each of the above embodiments may be a cross-flow fan or a propeller fan. When a cross-flow fan is used, the cross-flow fan is disposed in the fan housing chamber (11) so that its rotation axis is along the vertical direction. When a propeller fan is used, the cross-flow fan is disposed in the fan housing chamber (11) so that its rotation axis is along the horizontal direction. Whether a cross-flow fan or a propeller fan is used, the air discharged from the fan contains air currents inclined in various directions. By providing the blower device (1) with the second guide portion (40), the air discharged from the fan (20) can be made to flow upward toward the first guide portion (30).

[0153] The airflow generated by the fan (20) has a momentum of 0.05 kgm / s per unit area. 2 Above 0.75kgm / s 2 It may be in the following range:

[0154] The fan (20) has an average momentum of 0.05 kg / ms per unit area. 2 Above 0.75kg / ms 2 It is sufficient to generate an airflow within the following range, and the average momentum does not need to be changed.

[0155] The fan (20) has an average momentum per unit area of ​​0.05 kg / ms 2 Above 0.75kg / ms 2 The airflow may be varied periodically within the following ranges:

[0156] The air blower (1) of each of the above embodiments may have an air purifying unit. The air purifying unit is disposed in the suction port (12) or the through-hole (18) of the middle plate (10g). The air purifying unit may have a function of deodorizing or sterilizing in addition to removing suspended particles contained in the air. For example, the air purifying unit may have a UV germicidal lamp, a deodorizing filter, a streamer unit, or the like.

[0157] The straightening member (16) in each of the above embodiments may be a cloth. In this case, the air is blown out from the weave of the cloth, so that the direction and volume of the blown air can be made uniform regardless of the position within the air outlet (13). The straightening member (16) may also be a louver. The louver can adjust the direction and volume of the blown air.

[0158] In the air blower (1) of each of the above embodiments, a filter (15) may be provided at the air outlet (13). The air passing through the filter (15) is straightened. Therefore, the filter (15) can serve both to purify the air in the air passage (14) and to straighten the air to be blown out. This eliminates the need for a straightening member (16) at the air outlet (13).

[0159] Although the embodiment and the modified examples have been described above, it will be understood that various modifications of the form and details are possible without departing from the spirit and scope of the claims. In addition, the elements of the above embodiment, modified examples, and other embodiments may be appropriately combined or substituted.

[0160] The descriptions "first," "second," "third," etc. mentioned above are used to distinguish the words to which these descriptions are attached, and do not limit the number or order of the words. [Industrial Applicability]

[0161] INDUSTRIAL APPLICABILITY As described above, the present disclosure is useful for a blower device. [Explanation of symbols]

[0162] 1. Blower 10 Casing 13 Air outlet 14 Air passage 20 Fan (Centrifugal Fan) 30 1st Information Department 31a, 32a, 33a, 34a, 35a, 36a, 37a First planar member (planar member) 40 2nd Information Department 41 Guideway 42 Guide Surface 50 3rd Information Department 50A air volume distribution section 50B Wind direction adjustment section R Virtual surface

Claims

1. a casing (10) in which an air outlet (13) is formed; a fan (20) accommodated in the casing (10); an air passage (14) formed in the casing (10) between the air outlet (13) and the fan (20); a first guide portion (30) that guides air in the air passage (14) to the air outlet (13); a second guide portion (40) that is disposed between the fan (20) and the first guide portion (30) in the air passage (14) and divides the air passage (14) into a plurality of guide passages (41), The second guide portion (40) has a guide surface (42) that faces the guide passage (41) and guides air toward the first guide portion (30). Blower device.

2. The guide passages (41) are oriented in the same direction. The blower device according to claim 1 .

3. The second guide portion (40) rectifies the air discharged from the fan (20). The blower device according to claim 1 or 2.

4. The cross-sectional shape of the guide passage (41) is polygonal. The blower device according to claim 3.

5. The first guide portion (30) and the second guide portion (40) are arranged in a first direction, The guide passage (41) extends in the first direction. The blower device according to claim 1 .

6. The first guide portion (30) and the second guide portion (40) are arranged in a first direction, The fan (20) is disposed at one end side in the first direction and blows out air toward the other end side in the first direction. The guide passage (41) guides air in the first direction. The blower device according to claim 1 .

7. the fan (20) is a centrifugal fan, The guide surface (42) is aligned along the rotation axis direction of the fan (20) and the first direction. The blower device according to claim 5 or 6.

8. the fan (20) is a centrifugal fan, The fan (20) is disposed at an angle such that the discharge direction of the fan (20) is in the first direction. The blower device according to claim 5.

9. the first guide portion (30) includes a plurality of planar members (31 a, 32 a, 33 a, 34 a, 35 a, 36 a, 37 a) arranged in the first direction, The distance L between the planar members (31a, 32a, 33a, 34a, 35a, 36a, 37a) is 12 cm or less. The blower device according to claim 5.

10. a third guide portion (50) that is disposed between the fan (20) and the second guide portion (40) in the air passage (14) and guides the air discharged from the fan (20) to the second guide portion (40). The blower device according to claim 1 .

11. The third guide portion (50) has an air volume distribution portion (50A) that distributes the volume of air discharged from the fan (20). The blower device according to claim 10.

12. The third guide portion (50) has an airflow direction adjustment portion (50B) which adjusts the direction of the air discharged from the fan (20). The blower device according to claim 10 or 11.

13. the fan (20) is a centrifugal fan, The fan (20) is disposed so that the direction of the rotation axis of the fan (20) coincides with the blowing direction of the air blown out from the air outlet (13). The blower device according to claim 1 .

14. The fan (20) is disposed in the air passage (14) on the opposite side to the rotation direction of the fan (20). The blower device according to claim 13.

15. In a virtual plane (R) facing the air outlet (13) and having a wind speed of 0.2 m / s or more, an airflow having an average momentum per unit area in the range of 0.05 kg / ms2 or more and 0.75 kg / ms2 or less is generated. The blower device according to claim 1 .

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