Air cleaning apparatus

Abstract

A first front-surface inlet (30) is provided to a front surface (12) of a body case (10), and a front-surface-side air cleaning unit (40) is positioned rearward of the first front-surface inlet (30). A blower unit (60) has: a first intake port (64) disposed in an accommodation space (50) surrounded by the front-surface-side air cleaning unit (40), a lower surface (22), a rear surface (14), a first side surface (16), a second side surface (18), and an upper surface (20), the first intake port (64) facing the first side surface (16); a first airflow regulation part (80) provided to the first intake port (64); and a discharge port (72) connected to the upper surface (20). A blowout port (34) connected to the discharge port (72) of the blower unit (60) is provided to the upper surface (20) of the body case (10).

Description

air purifier

[0001] The present disclosure relates to an air purification device that purifies air.

[0002] Air purifiers are required to have improved dust collection capabilities. To this end, a cylindrical filter is disposed within the housing of the air purifier, and a fan and a drive motor are also disposed within the filter (see, for example, Patent Document 1).

[0003] Japanese Unexamined Patent Publication No. 60-202710

[0004] According to Patent Document 1, dust collection performance is improved by forming the filter into a cylindrical shape, but it is difficult to make the housing thinner in the horizontal direction.

[0005] Therefore, the present disclosure provides a technique for thinning the housing in the horizontal direction while maintaining dust collection performance.

[0006] An air purifying device according to one aspect of the present disclosure includes: a box-shaped main body case having a front surface, a rear surface, a first side surface, a second side surface, a top surface, and a bottom surface; a first front air intake port provided on the front surface of the main body case; a front air purifying unit located inside the main body case and behind the first front air intake port; a blower unit located inside the main body case in a storage space surrounded by the front air purifying unit, the bottom surface, the rear surface, the first side surface, the second side surface, and the top surface, and having a first air intake port facing the first side surface and an outlet port connected to the top surface; an air outlet provided on the top surface of the main body case and connected to the outlet port of the blower unit; and a first rectifying unit provided in the first air intake port.

[0007] According to the present disclosure, the housing can be made thinner in the horizontal direction while maintaining dust collection performance.

[0008] FIG. 1 is a perspective view showing the appearance of an air purifying device of the first embodiment. FIG. 2 is a perspective view showing the internal configuration of the air purifying device. FIG. 3 is a cross-sectional view of the air purifying device. FIG. 4 is a front view showing the internal configuration of the air purifying device. FIG. 5 is a perspective view showing the appearance of an air purifying device of the second embodiment. FIG. 6 is a perspective view showing the internal configuration of the air purifying device. FIG. 7 is a perspective view showing the internal configuration of the air purifying device. FIG. 8 is a cross-sectional view of the air purifying device. FIG. 9 is a cross-sectional view of the air purifying device.

[0009] (Embodiment 1) Hereinafter, examples of the present disclosure will be described with reference to the drawings. Note that each of the following examples is an example of embodying the present disclosure and does not limit the technical scope of the present disclosure. Furthermore, each drawing described in each embodiment is a schematic drawing, and the ratios of the sizes and thicknesses of the components in each drawing do not necessarily reflect the actual dimensional ratios.

[0010] 1, 2, and 3 show the configuration of the air purifying device 100. FIG. 1 is a perspective view showing the exterior of the air purifying device 100. The main body case 10 has a box-like shape and is surrounded by a front surface 12, a rear surface 14, a first side surface 16, a second side surface 18, a top surface 20, and a bottom surface 22. The direction from the front surface 12 to the rear surface 14 is the rearward direction, and the direction from the rear surface 14 to the front surface 12 is the forward direction. The direction from the first side surface 16 to the second side surface 18 is the leftward direction, and the direction from the second side surface 18 to the first side surface 16 is the rightward direction. The direction from the top surface 20 to the bottom surface 22 is the downward direction, and the direction from the bottom surface 22 to the top surface 20 is the upward direction. Therefore, the front surface 12 and the rear surface 14 are arranged opposite each other in the front-to-rear direction, the first side surface 16 and the second side surface 18 are arranged opposite each other in the left-to-right direction, and the top surface 20 and the bottom surface 22 are arranged opposite each other in the up-down direction.

[0011] The front surface 12, rear surface 14, first side surface 16, second side surface 18, top surface 20, and bottom surface 22 each have a rectangular shape. The widths of the front surface 12, rear surface 14, top surface 20, and bottom surface 22 in the left-right direction are shorter than the widths of the first side surface 16, second side surface 18, top surface 20, and bottom surface 22 in the front-to-back direction. The widths of the front surface 12, rear surface 14, top surface 20, and bottom surface 22 in the left-to-right direction are also shorter than the heights of the front surface 12, rear surface 14, first side surface 16, and second side surface 18 in the up-down direction. As a result, the main body case 10 has a thin shape in the left-to-right direction.

[0012] The first front air inlet 30 is provided on the front surface 12 of the main body case 10. The air outlet 34 is provided on the top surface 20 of the main body case 10. The first front air inlet 30 and the air outlet 34 are openings. Therefore, the inside and outside of the air purifying device 100 are connected via the first front air inlet 30 and the air outlet 34.

[0013] FIG. 2 is a perspective view showing the internal configuration of the air purifying device 100 with the first side surface 16 removed from FIG. 1, and FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2. The first side surface 16 is shown in FIG. 3. Inside the main body case 10, a front-side air purifying unit 40 is disposed behind the first front air inlet 30. The front-side air purifying unit 40 has a plate-like shape. The front-side air purifying unit 40 is provided facing the front surface 12. The front-side air purifying unit 40 is a dust-removing filter. Known technology may be used for the dust-removing filter, and therefore a description thereof will be omitted here.

[0014] Inside the main body case 10, a storage space 50 is formed, surrounded by the front air purification unit 40, the bottom surface 22, the rear surface 14, the first side surface 16, the second side surface 18, and the top surface 20. A blower unit 60 is disposed in the storage space 50. The blower unit 60 includes a casing 62, a first air intake port 64, a motor 68, a fan unit 70, and an outlet port 72. The casing 62 is a hollow frame having a cylindrical portion with a left-right axis and legs extending upward from part of the side surface of the cylindrical portion.

[0015] A first air intake port 64 is provided on the surface of the cylindrical portion of the casing 62 on the side of the first side surface 16. In other words, the first air intake port 64 faces the first side surface 16. The first air intake port 64 is an opening. Therefore, the inside and outside of the casing 62 are connected at the first air intake port 64.

[0016] A motor 68 and a fan unit 70 are housed inside the cylindrical portion of the casing 62. An example of the fan unit 70 is a single-suction sirocco fan.

[0017] The fan section 70 includes a main plate portion 70a and a first blade portion 70b.

[0018] The main plate portion 70a is disk-shaped and has a bowl-shaped recessed portion 70d in the center. The recessed portion 70d is shaped such that the center of the main plate portion 70a is recessed toward the first air intake port 64 of the casing 62. The motor 68 is disposed inside the recessed portion 70d.

[0019] The first blade portions 70b are elongated plate-shaped with a roughly arc-shaped cross section, and a large number of them are arranged in a ring shape on the peripheral edge of one side (the first intake port 64 side of the casing 62) of the main plate portion 70a.

[0020] The motor 68 is fixed to the casing 62 with mounting screws or the like and has an output shaft extending in the left-right direction. The fan unit 70 is attached to the output shaft of the motor 68. An outlet port 72, which is an opening in the casing 62, is provided in the upper part of the leg portion of the casing 62. The outlet port 72 is connected to the air outlet 34 on the upper surface 20.

[0021] When the motor 68 operates to rotate the fan unit 70, air outside the main body case 10 passes through the first front air inlet 30 and the front air purifying unit 40 and is drawn into the storage space 50. The air drawn into the storage space 50 is drawn into the casing 62 through the first air inlet 64, and is blown out of the main body case 10 through the discharge port 72 and the air outlet 34.

[0022] Furthermore, since no filter for passing air in the left-right direction is provided inside the main body case 10, the main body case 10 can be made thinner in the left-right direction.

[0023] Furthermore, a first rectifying unit 80 is provided at the first air intake port 64 of the casing 62 in the blower unit 60. FIG. 4 is a front view showing the internal configuration of the air purifying device 100. FIG. 4 also shows the configuration of the first rectifying unit 80. The first rectifying unit 80 has a plurality of cylindrical first cylindrical rectifying units 82 arranged concentrically around the central axis of the circular first air intake port 64. Specifically, the first cylindrical rectifying units 82 are divided into a number of equal-spaced sections with respect to the radius of the circle of the first air intake port 64. The length of the first cylindrical rectifying units 82 in the central axis direction is equal to the thickness of the first air intake port 64. The surface of the casing 62 on the first side surface 16 side, including the first air intake port 64, and the end face of the first cylindrical rectifying unit 82 on the first side surface 16 side are flush with each other.

[0024] As a result, the first air intake port 64 is subdivided by the multiple first cylindrical flow straighteners 82. When air that has passed through the first front air inlet 30 and the front-side air purifier 40 passes through the first air intake port 64, it is less likely to flow unevenly into an area on the front surface 12 side of the first air intake port 64 (in front of the first air intake port 64). As a result, air is prevented from flowing unevenly into an area on the front surface 12 side of the first air intake port 64. Air flowing into the first air intake port 64 from a direction perpendicular to the central axis of the first air intake port 64 can be sent by the first cylindrical flow straighteners 82 from the entire first air intake port 64 to the fan unit 70 in the blower unit 60, thereby preventing performance degradation.

[0025] The first rectifying unit 80 also has a plurality of linear first radial rectifying units 84 arranged radially from the central axis of the circular first air intake port 64. Specifically, the first radial rectifying units 84 are divided into a number of equal-spaced portions around the circumference of the first air intake port 64. Furthermore, the first radial rectifying units 84 are divided into a number of equal-spaced portions around the circumference of the first air intake port 64 in a range outside half the radius of the circle of the first air intake port 64. The length of the first radial rectifying units 84 in the central axis direction at the first air intake port 64 is equal to the thickness of the first air intake port 64. The surface of the casing 62 on the first side surface 16 side, including the first air intake port 64 and the first cylindrical rectifying units 82, and the end face of the first radial rectifying units 84 on the first side surface 16 side are flush with each other. Note that the distance between adjacent first cylindrical rectifying units 82 is shorter than the distance between adjacent first radial rectifying units 84. The opening surrounded by adjacent first cylindrical flow straightening portions 82 and adjacent first radial flow straightening portions 84 has an elongated shape that is long in the arc direction of the first cylindrical flow straightening portions 82 .

[0026] As a result, the first air intake port 64 is subdivided by the multiple first cylindrical rectifying portions 82 and the multiple first radial rectifying portions 84. As a result, air that has passed through the first front air inlet 30 and the front-side air purifying portion 40 is less likely to flow into the area on the front surface 12 side of the first air intake port 64 when passing through the first air intake port 64. As a result, it is thought that the first cylindrical rectifying portions 82 and the first radial rectifying portions 84 can prevent air flowing into the first air intake port 64 from a direction perpendicular to the central axis of the first air intake port 64 from being biased toward the front surface 12 side of the first air intake port 64, and the air can be sent from the first air intake port 64 to the fan portion 70 in the blower portion 60, thereby suppressing performance degradation.

[0027] Here, let us assume that the first air intake port 64 is divided into three sections in the front-to-rear direction of the main body case 10. That is, the section of the first air intake port 64 on the front surface 12 side is referred to as the first air intake port front surface section 64a, the section of the first air intake port 64 on the rear surface 14 side is referred to as the first air intake port rear surface section 64b, and the section of the first air intake port 64 between the front surface 12 side and the rear surface 14 side is referred to as the first air intake port central portion 64c. In the opening surrounded by adjacent first cylindrical rectifying sections 82 and adjacent first radial rectifying sections 84, the dimension of the first air intake port central portion 64c in the direction from the front surface 12 side to the rear surface 14 side of the main body case 10 (the direction in which air flows) is larger than that of the first air intake port front surface section 64a. Here, air that has passed through first front air intake port 30 and front-side air purifier 40 flows between the surface of casing 62 having first air intake port 64 and first side surface 16 of main body case 10 in a direction from front surface 12 to rear surface 14 of main body case 10. It is considered that air flowing toward casing 62 flows more easily from the opening of first air intake central portion 64c into casing 62 than from the opening of first air intake front portion 64a into casing 62 because pressure loss is smaller. As a result, air flowing into first air intake port 64 in a direction perpendicular to the central axis of first air intake port 64 and in a direction from front surface 12 to rear surface 14 of main body case 10 is prevented from biasing toward front surface 12 of first air intake port 64 by first cylindrical rectifier 82 and first radial rectifier 84, and can be sent from first air intake port 64 to fan unit 70 in blower unit 60. Therefore, it is believed that the performance degradation can be suppressed.

[0028] (Embodiment 2) Components similar to those in Embodiment 1 are assigned the same reference numerals, and detailed descriptions thereof will be omitted. Fig. 5 is a perspective view showing the exterior of air purifying device 110. First front air inlet 30 and second front air inlet 31 are provided on front surface 12 of main body case 10. First front air inlet 30 is positioned higher than second front air inlet 31. Air outlet 34 is provided on top surface 20 of main body case 10. First front air inlet 30, second front air inlet 31, and air outlet 34 are openings. Therefore, the inside and outside of air purifying device 110 are connected via first front air inlet 30, second front air inlet 31, and air outlet 34.

[0029] FIG. 6 is a perspective view showing the internal configuration of the air purifying device 110 with the first side surface 16 removed from FIG. 5. FIG. 7 is a perspective view showing the internal configuration of the air purifying device 110 with the second side surface 18 removed from FIG. 5. FIG. 8 is a cross-sectional view taken along the line B-B of FIG. 6. FIG. 9 is a cross-sectional view taken along the line C-C of FIG. 6. Note that FIGS. 8 and 9 show the first side surface 16. Inside the main body case 11, a front-side air purifying unit 40 is disposed behind the first front air inlet 30. Inside the main body case 11, a bottom-side air purifying unit 42 is disposed above the upper edge of the second front air inlet 31 and the bottom surface 22. The bottom-side air purifying unit 42 is disposed above the bottom surface 22 and above the upper edge of the second front air inlet 31. The front-side air purifying unit 40 and the lower-side air purifying unit 42 have a plate-like shape, with the front-side air purifying unit 40 facing the front surface 12 and the lower-side air purifying unit 42 facing the lower surface 22. The front-side air purifying unit 40 and the lower-side air purifying unit 42 are dust-removing filters. Known technology may be used for the dust-removing filters, and therefore a description thereof will be omitted here.

[0030] Inside main body case 11, a storage space 50 is formed, surrounded by front air purifying unit 40, bottom air purifying unit 42, rear surface 14, first side surface 16, second side surface 18, and top surface 20. Air blower 60 is disposed in storage space 50. Air blower 61 includes a casing 63, a first air intake 64, a second air intake 66, a motor 68, a fan unit 71, and an outlet 72. Casing 62 is a hollow frame having a cylindrical portion with a left-right axis and legs extending upward from part of the side surface of the cylindrical portion.

[0031] A first air intake port 64 is provided on the surface of the cylindrical portion of the casing 63 facing the first side surface 16, and a second air intake port 66 is provided on the surface of the cylindrical portion of the casing 63 facing the second side surface 18. In other words, the first air intake port 64 faces the first side surface 16, and the second air intake port 66 faces the second side surface 18. The first air intake port 64 and the second air intake port 66 are openings. Therefore, the inside and outside of the casing 63 are connected via the first air intake port 64 and the second air intake port 66.

[0032] A motor 68 and a plurality of fan units 71 are housed inside the cylindrical portion of the casing 63. An example of the fan unit 71 is a double-suction sirocco fan.

[0033] The fan section 71 includes a main plate portion 71a, a first blade portion 71b, and a second blade portion 71c.

[0034] The main plate portion 71a is disk-shaped and has a bowl-shaped recessed portion 71d in the center thereof. The recessed portion 71d is shaped such that the center of the main plate portion 71a is recessed toward the first air intake port 64 of the casing 63. A portion of the motor 68 is disposed inside the recessed portion 71d.

[0035] The first blade portions 71b are elongated plate-shaped with a generally arc-shaped cross section, and a large number of them are arranged in an annular shape on the peripheral edge of one side (the first intake port 64 side of the casing 63) of the main plate portion 71a.

[0036] The second blade portions 71c are elongated plate-shaped with a generally arc-shaped cross section, and a large number of them are arranged in an annular shape on the peripheral edge of the other side (the second intake port 66 side of the casing 63) of the main plate portion 71a.

[0037] The motor 68 is fixed to the casing 63 with mounting screws or the like and has an output shaft extending in the left-right direction. The fan unit 71 is attached to the output shaft of the motor 68. An outlet port 72, which is an opening in the casing 63, is provided in the upper part of the leg portion of the casing 63. The outlet port 72 is connected to the air outlet 34 on the top surface 20.

[0038] When the motor 68 operates to rotate the fan unit 71, air outside the main body case 11 is drawn into the storage space 50 through the first front air inlet 30 and the front air purifier 40, and also through the second front air inlet 31 and the bottom air purifier 42. Air inside the storage space 50 is drawn into the casing 63 through the first air inlet 64 and the second air inlet 66, and is blown out of the main body case 11 through the discharge port 72 and the air outlet 34.

[0039] The main body case 11 is provided with not only the front air purifying section 40, which passes air rearward, but also the bottom air purifying section 42, which passes air upward, thereby maintaining dust collection performance. Furthermore, the main body case 11 is not provided with a filter that passes air left and right, so the main body case 11 is slimmer in the left and right direction. The cross-sectional air passage area of ​​the bottom air purifying section 42 is made larger than the opening area of ​​the second front air inlet 31, thereby reducing pressure loss.

[0040] According to this embodiment, the front-side air purifying unit 40 is disposed behind the first front air inlet 30 inside the main body case 11, and the bottom-side air purifying unit 42 is disposed above the bottom surface 22 and the second front air inlet 31, thereby maintaining dust collection performance. Furthermore, since the front-side air purifying unit 40 is disposed behind the first front air inlet 30 inside the main body case 11, and the bottom-side air purifying unit 42 is disposed above the bottom surface 22 and the second front air inlet 31, and no other air purifying units are disposed inside the main body case 11, the housing can be made thinner in the horizontal direction. Furthermore, the cross-sectional air passage area of ​​the bottom-side air purifying unit 42 is larger than the opening area of ​​the second front air inlet 31, thereby reducing pressure loss. Furthermore, since the bottom-side air purifying unit 42 is disposed facing the bottom surface 22, the bottom surface 22 side, which was not previously used as an air purifying unit, is used as an air purifying unit, eliminating the need to provide air purifying units on the first side surface 16 and the second side surface 18.

[0041] Furthermore, a first rectifying section 80 is provided at the first air intake port 64 of the casing 63 in the blower section 61 , and a second rectifying section 86 is provided at the second air intake port 66 of the casing 63 in the blower section 61 .

[0042] This allows the first air intake 64 and the second air intake 66 to be subdivided, and when air that has passed through the first front air intake 30 and the front-side air purification section 40 passes through the first air intake 64 and the second air intake 66, the air coming from a direction perpendicular to the central axis of the first air intake 64 and the central axis of the second air intake 66 can be prevented from becoming uneven by the first straightening section 80 and the second straightening section 86 and can be sent to the fan section 71 in the blower section 61, thereby preventing a reduction in performance.

[0043] The first flow straightening section 80 has a plurality of cylindrical first cylindrical flow straightening sections 82 arranged concentrically with respect to the central axis of the circular first air intake port 64. Specifically, the first cylindrical flow straightening sections 82 are divided into a large number of sections at equal intervals with respect to the radius of the circle of the first air intake port 64. The length of each first cylindrical flow straightening section 82 in the central axis direction is equal to the thickness of the first air intake port 64, and the surface of the casing 63 of the blower section 61 on the first side surface 16 side, which includes the first air intake port 64, and the end face of each first cylindrical flow straightening section 82 on the first side surface 16 side are flush with each other.

[0044] As a result, the first air intake port 64 is subdivided by the multiple first cylindrical rectifiers 82, and air that has passed through the first front air inlet 30 and the front-side air purifier 40 is less likely to flow into the area on the front surface 12 side of the first air intake port 64 when passing through the first air intake port 64. As a result, it is thought that the uneven flow of air into the area on the front surface 12 side of the first air intake port 64 is suppressed, and air that comes to the first air intake port 64 from a direction perpendicular to the central axis of the first air intake port 64 can be sent by the first cylindrical rectifiers 82 from the entire first air intake port 64 to the fan section 71 in the blower section 61, thereby suppressing performance degradation.

[0045] The first rectifying unit 80 also has a plurality of linear first radial rectifying units 84 arranged radially from the central axis of the circular first air intake port 64. Specifically, the first radial rectifying units 84 are divided into a number of equal-spaced portions around the circumference of the circle of the first air intake port 64. Furthermore, in a range outside half the radius of the first air intake port 64, the first radial rectifying units 84 are further divided into a number of equal-spaced portions around the circumference of the circle of the first air intake port 64. The length of the first radial rectifying unit 84 in the central axis direction at the first air intake port 64 is equal to the thickness of the first air intake port 64. The surface of the casing 63 of the blower unit 61 on the first side surface 16 side, including the first air intake port 64 and the first cylindrical rectifying unit 82, is flush with the end face of the first radial rectifying unit 84 on the first side surface 16 side. Note that the distance between adjacent first cylindrical rectifying units 82 is shorter than the distance between adjacent first radial rectifying units 84. The opening surrounded by adjacent first cylindrical flow straightening portions 82 and adjacent first radial flow straightening portions 84 has an elongated shape that is long in the arc direction of the first cylindrical flow straightening portions 82 .

[0046] As a result, first air intake port 64 is subdivided by multiple first cylindrical rectifiers 82 and multiple first radial rectifiers 84, and air that has passed through first front air inlet 30 and front-side air purifier 40 is less likely to flow into the area on front surface 12 side of first air intake port 64 when passing through first air intake port 64. As a result, it is thought that air coming from a direction perpendicular to the central axis of first air intake port 64 can be prevented from biasing toward front surface 12 side of first air intake port 64 by first cylindrical rectifiers 82 and first radial rectifiers 84, and can be sent from first air intake port 64 to fan section 71 in blower section 61, thereby preventing performance degradation.

[0047] Here, let us assume that the first air intake port 64 is divided into three sections in the front-to-rear direction of the main body case 11. That is, the section of the first air intake port 64 on the front surface 12 side is referred to as the first air intake port front surface section 64a, the section of the first air intake port 64 on the rear surface 14 side is referred to as the first air intake port rear surface section 64b, and the section of the first air intake port 64 between the front surface 12 side and the rear surface 14 side is referred to as the first air intake port central section 64c. Although the details are not known, the dimension of the opening surrounded by adjacent first cylindrical flow straightening sections 82 and adjacent first radial flow straightening sections 84 in the direction from the front surface 12 side to the rear surface 14 side of the main body case 11 (the direction in which air flows) is larger for the first air intake port central section 64c than for the first air intake port front surface section 64a. Here, air that has passed through first front air intake port 30 and front-side air purifier 40 flows between the surface of casing 63 having first air intake port 64 and first side surface 16 of main body case 11 from front surface 12 to rear surface 14 of main body case 11. It is considered that air flowing into casing 63 from the opening of first air intake central portion 64c is easier to flow into casing 63 because pressure loss is smaller than that flowing into casing 63 from the opening of first air intake front portion 64a. As a result, air flowing into first air intake port 64 in a direction perpendicular to the central axis of first air intake port 64 and from front surface 12 to rear surface 14 of main body case 11 is prevented from biasing toward front surface 12 of first air intake port 64 by first cylindrical rectifier 82 and first radial rectifier 84, and can be sent from first air intake port 64 to fan unit 71 in blower unit 61. Therefore, it is believed that the performance degradation can be suppressed.

[0048] The second airflow straightening section 86 has a plurality of cylindrical second cylindrical airflow straightening sections 88 arranged concentrically about the central axis of the circular second air intake port 66. Specifically, the second cylindrical airflow straightening sections 88 are divided into a large number of sections at equal intervals with respect to the radius of the circle of the second air intake port 66. The length of each second cylindrical airflow straightening section 88 in the central axis direction is equal to the thickness of the second air intake port 66. The surface of the casing 63 of the blower section 61 on the side of the second side surface 18, which includes the second air intake port 66, and the end face of each second cylindrical airflow straightening section 88 on the side of the second side surface 18, are flush with each other.

[0049] As a result, the second air intake port 66 is subdivided by the multiple second cylindrical rectifiers 88, and air that has passed through the first front air inlet 30 and the front-side air purifier 40 is less likely to flow into the area on the front surface 12 side and the area on the underside 22 side of the second air intake port 66 when passing through the second air intake port 66. As a result, it is thought that air is prevented from flowing unevenly into the area on the front surface 12 side and the area on the underside 22 side of the second air intake port 66, and that air flowing into the second air intake port 66 from a direction perpendicular to the central axis of the second air intake port 66 can be sent by the second cylindrical rectifiers 88 from the entire second air intake port 66 to the fan section 71 in the blower section 61, thereby suppressing performance degradation.

[0050] The second rectifying section 86 also has a plurality of linear second radial rectifying sections 90 arranged radially from the central axis of the circular second air intake port 66. Specifically, the second radial rectifying sections 90 are divided into 16 equal parts around the circumference of the second air intake port 66, and further, in a range outside half the radius of the circle of the second air intake port 66, the second radial rectifying sections 90 are divided into 32 equal parts around the circumference of the circle of the second air intake port 66. The length of the second radial rectifying section 90 in the central axis direction at the second air intake port 66 is equal to the thickness of the second air intake port 66. The surface of the casing 63 of the blower section 61 on the second side surface 18 side, which includes the second air intake port 66 and the second cylindrical rectifying section 88, and the end face of the second radial rectifying section 90 on the second side surface 18 side are flush with each other. Note that the distance between adjacent second cylindrical rectifying sections 88 is shorter than the distance between adjacent second radial rectifying sections 90. The opening surrounded by the adjacent second cylindrical flow straightening portions 88 and the adjacent second radial flow straightening portions 90 has an elongated shape that is long in the arc direction of the second cylindrical flow straightening portions 88 .

[0051] As a result, the second air intake port 66 is subdivided by the multiple second cylindrical rectifiers 88 and the multiple second radial rectifiers 90, and air that has passed through the first front air inlet 30 and the front-side air purifier 40 is less likely to flow into the area on the front surface 12 side of the second air intake port 66 when passing through the second air intake port 66. As a result, it is thought that the air flowing into the second air intake port 66 from a direction perpendicular to the central axis of the second air intake port 66 is prevented from biasing toward the front surface 12 side of the second air intake port 66 by the second cylindrical rectifiers 88 and the second radial rectifiers 90, and can be sent from the second air intake port 66 to the fan unit 71 in the blower unit 61. This prevents performance degradation.

[0052] Here, let us assume that the second air intake port 66 is divided into three sections in the front-to-rear direction of the main body case 11. That is, the section of the second air intake port 66 on the front surface 12 side is referred to as the second air intake port front surface section 66a, the section of the second air intake port 66 on the rear surface 14 side is referred to as the second air intake port rear surface section 66b, and the section of the second air intake port 66 between the front surface 12 side and the rear surface 14 side is referred to as the second air intake port central portion 66c. Although the details are not known, the dimension of the opening surrounded by adjacent second cylindrical flow straightening sections 88 and adjacent second radial flow straightening sections 90 in the direction from the front surface 12 side to the rear surface 14 side of the main body case 11 (the direction in which air flows) is larger for the second air intake port central portion 66c than for the second air intake port front surface section 66a. As a result, air passing through first front air inlet 30 and front-side air purifier 40 and flowing between the surface of casing 63 having second air inlet 66 and second side surface 18 of main body case 11 from front surface 12 to rear surface 14 of main body case 11 is thought to flow more easily through the opening of second air inlet central portion 66c into casing 63 due to lower pressure loss than through the opening of second air inlet front portion 66a into casing 63. As a result, the air flowing perpendicular to the central axis of second air inlet 66 from front surface 12 to rear surface 14 of main body case 11 to second air inlet 66 is prevented from biasing toward the front surface 12 of second air inlet 66 by second cylindrical rectifier 88 and second radial rectifier 90, and can be sent from second air inlet 66 to fan unit 71 in blower unit 61. This is thought to suppress performance degradation.

[0053] Additionally, an airflow direction changing unit 92 is provided inside the main body case 11, between the front-side air purifying unit 40 and the blower unit 61. FIG. 9 shows the configuration of the airflow direction changing unit 92. The airflow direction changing unit 92 changes the direction of air that has passed through the front-side air purifying unit 40 toward the first side surface 16 and the second side surface 18. The airflow direction changing unit 92 has a plurality of plate-shaped components. Specifically, the airflow direction changing unit 92 includes a plurality of plate-shaped components extending obliquely from the rear surface 14 of the front-side air purifying unit 40 toward the first side surface 16 in a range from the center of the first front air inlet 30 in the left-right direction toward the first side surface 16. Furthermore, the airflow direction changing unit 92 includes a plurality of plate-shaped components extending obliquely from the rear surface 14 of the front-side air purifying unit 40 toward the second side surface 18 in a range from the center of the first front air inlet 30 in the left-right direction toward the second side surface 18.

[0054] As a result, air direction changing section 92 changes the direction of air that passes through front-side air purification section 40 and flows rearward toward first side surface 16 and second side surface 18. By making it easier for air to flow toward first air intake port 64 and second air intake port 66, performance degradation can be suppressed.

[0055] Furthermore, a lower-side air purifying unit 42 is provided inside the main body case 11 below the blower unit 61, and a second front face inlet 31 is provided on the front face 12 of the main body case 11 below the first front face inlet 30. Air drawn in from the second front face inlet 31 by the blower unit 61 is sent to the air outlet 34 via the lower-side air purifying unit 42. Specifically, the lower-side air purifying unit 42 extends from the front face 12 to the rear face 14 inside the main body case 11, and has a space 52 between it and the underside 22 of the main body case 11. Air drawn in from the second front face inlet 31 by the blower unit 61 is sent to the lower-side air purifying unit 42 via the space 52.

[0056] As a result, dust collection is maintained because not only the front air purifying section 40 that passes air backward, but also the lower air purifying section 42 that passes air upward. Also, because no filter that passes air left and right is provided inside the main body case 11, the main body case 11 is made thinner left and right. Here, the cross-sectional air passage area of ​​the lower air purifying section 42 is made larger than the opening area of ​​the second front air inlet 31, thereby reducing pressure loss.

[0057] Furthermore, the lower-side air purifying unit 42 extends from the front surface 12 to the rear surface 14 inside the main body case 11, and a space 52 is formed between the lower surface 22 of the main body case 11 and the lower-side air purifying unit 42. The air drawn in through the second front surface inlet 31 passes through the space 52 and the lower-side air purifying unit 42 in that order, and easily flows into the rear surface 14 inside the main body case 11. As a result, the air drawn in through the second front surface inlet 31 easily flows into the casing 63 from the first air inlet rear surface portion 64b, which is the portion of the first air inlet 64 on the rear surface 14 side, and the second air inlet rear surface portion 66b, which is the portion of the second air inlet 66 on the rear surface 14 side.

[0058] The present disclosure has been described above based on each embodiment, but the present disclosure is not limited to the above-described embodiments, and it can be easily inferred that various improvements and modifications are possible within the scope of the present disclosure.

[0059] The air purifying device according to the present disclosure is expected to be used as an air purifying device for home or office use.

[0060] REFERENCE SIGNS LIST 10 Main body case 11 Main body case 12 Front surface 14 Rear surface 16 First side surface 18 Second side surface 20 Top surface 22 Bottom surface 30 First front air inlet 31 Second front air inlet 34 Air outlet 40 Front air purifying section 42 Bottom air purifying section 50 Storage space 52 Space 60 Blower section 61 Blower section 62 Casing 63 Casing 64 First air inlet 64a First air inlet front section 64b First air inlet rear section 64c First air inlet central section 66 Second air inlet 66a Second air inlet front section 66b Second air inlet rear section 66c Second air inlet central section 68 Motor 70 Fan section 70a Main board section 70b First blade section 70d Recessed portion 71 Fan portion 71a Main plate portion 71b First blade portion 71c Second blade portion 71d Recessed portion 72 Outlet port 80 First flow straightening portion 82 First cylindrical flow straightening portion 84 First radial flow straightening portion 86 Second flow straightening portion 88 Second cylindrical flow straightening portion 90 Second radial flow straightening portion 92 Air direction changing portion 100 Air purifying device 110 Air purifying device

Claims

1. An air purifying device comprising: a box-shaped main body case having a front surface, a rear surface, a first side surface, a second side surface, a top surface, and a bottom surface; a first front surface intake port provided on the front surface of the main body case; a front-side air purifying unit located inside the main body case and behind the first front surface intake port; an air blowing unit located inside the main body case in a storage space surrounded by the front-side air purifying unit, the bottom surface, the rear surface, the first side surface, the second side surface, and the top surface, and having a first air intake port facing the first side surface and an outlet port connected to the top surface; an air outlet provided on the top surface of the main body case and connected to the outlet port of the air blowing unit; and a first rectifying unit provided in the first air intake port.

2. The air purifying device according to claim 1, wherein the blower has a second air intake facing the second side surface, and a second rectifying section is provided in the second air intake.

3. An air purifying device as described in claim 1, wherein the first straightening section has a plurality of cylindrical first straightening sections arranged concentrically about the central axis of the circular first air intake port.

4. An air purifying device as described in claim 2, wherein the second straightening section has a plurality of cylindrical second straightening sections arranged concentrically about the central axis of the circular second air intake port.

5. An air purifying device according to claim 3, wherein the first rectifying section has a plurality of linear first radial rectifying sections arranged radially from the central axis of the circular first air intake port.

6. An air purifying device according to claim 4, wherein the second rectifying section has a plurality of linear second radial rectifying sections arranged radially from the central axis of the circular second air intake port.

7. An air purifying device as described in claim 5 or claim 6, wherein a wind direction changing section is provided between the front side air purifying section and the blowing section, and the wind direction changing section changes the wind direction of the air that has passed through the front side air purifying section to the first side side and the second side side.

8. An air purifying device as described in claim 5 or claim 6, wherein a lower air purifying section is provided inside the main body case below the blowing section, and a second front air inlet is provided on the front surface of the main body case below the first front air inlet, and the air sucked in from the second front air inlet by the blowing section is blown to the air outlet via the lower air purifying section.

9. An air purifying device as described in claim 8, wherein the lower air purifying unit extends from the front to the rear inside the main body case, with a space between it and the lower surface of the main body case, and air drawn in from the second front air inlet by the blower unit is blown to the lower air purifying unit through the space.

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