Air cleaning device

Abstract

To provide a technique for thinning a case in a horizontal direction while keeping dust collection performance.SOLUTION: A first front surface suction port 30 is provided in a front surface 12 of a body case 10, and a front surface side air cleaning part 40 is arranged on a rear side of the first front surface suction port 30. An air blowing part 60 is arranged in a housing space 50 surrounded by the front surface side air cleaning part 40, a lower surface 22, a rear surface 14, a first side surface 16, a second side surface 18, and an upper surface 20, and comprises a first air intake port 64 opposed to the first side surface 16, a first straightening part 80 provided in the first air intake port 64, and a discharge port 72 connected to the upper surface 20. A blowing port 34 connected to the discharge port 72 of the air blowing part 60 is provided in the upper surface 20 of the body case 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Air purifiers are required to have improved dust collection performance. 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). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 60-202710 Summary of the Invention [Problem to be solved by the invention]

[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 is intended to solve the above-mentioned conventional problems, and has an object to provide a technology for thinning the housing in the horizontal direction while maintaining dust collection performance. [Means for solving the problem]

[0006] In order to solve the above problems, an air purifying device according to an embodiment 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 inlet provided on the front surface of the main body case; a front air purifying unit disposed inside the main body case and rearward of the first front air inlet; a blower unit disposed inside the main body case in a storage space surrounded by the front air purification unit, the lower surface, the rear surface, the first side surface, the second side surface, and the upper surface, the blower unit having a first air intake port facing the first side surface and an air outlet connected to the upper surface; an air outlet provided on the top surface of the main body case and connected to the outlet of the air blower; and a first rectifying section provided in the first air intake port, thereby achieving the desired object. [Effects of the Invention]

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

[0008] [Figure 1] FIG. 1 is a perspective view showing the appearance of an air purifying device according to a first embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing the internal configuration of the air purifying device. [Figure 3] FIG. 3 is a cross-sectional view of the air purifying device. [Figure 4] FIG. 3 is a front view showing the internal configuration of the air purifying device. [Figure 5] FIG. 10 is a perspective view showing the appearance of the air purifying device according to the second embodiment. [Figure 6] FIG. 2 is a perspective view showing the internal configuration of the air purifying device. [Figure 7] FIG. 2 is a perspective view showing the internal configuration of the air purifying device. [Figure 8] FIG. 3 is a cross-sectional view of the air purifying device. [Figure 9] FIG. 3 is a cross-sectional view of the air purifying device. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Embodiment 1) Examples of the present disclosure will be described below with reference to the drawings. Note that the following examples are examples that embody the present disclosure and do not limit the technical scope of the present disclosure. Furthermore, each drawing described in the embodiments 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 an 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, an upper surface 20, and a lower 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 upper surface 20 to the lower surface 22 is the downward direction, and the direction from the lower surface 22 to the upper 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 upper surface 20 and the lower 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 are rectangular. 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 and 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 at the first front air inlet 30 and the air outlet 34.

[0013] Fig. 2 is a perspective view showing the internal configuration of air purifying device 100 with first side surface 16 removed from Fig. 1, and Fig. 3 is a cross-sectional view taken along line AA in Fig. 2. Fig. 3 shows first side surface 16. Inside main body case 10, front-side air purifying unit 40 is disposed behind first front air inlet 30. Front-side air purifying unit 40 has a plate shape and is oriented to face front surface 12, and 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 casing 62 on the side of first side surface 16. In other words, first air intake port 64 faces first side surface 16. First air intake port 64 is an opening. Therefore, first air intake port 64 connects the inside and outside of casing 62.

[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 so 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 generally arcuate 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 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 72, which is an opening in the casing 62, is provided in the upper part of the leg portion of the casing 62, and the outlet 72 is connected to the air outlet 34 on the top 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. Air inside the storage space 50 is drawn into the casing 62 through the first air inlet 64, passes through the discharge port 72 and the air outlet 34 and is blown out of the main body case 10.

[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 airflow straightening section 80 is provided at the first air intake port 64 of the casing 62 in the blower section 60. FIG. 4 shows the configuration of the first airflow straightening section 80. The first airflow straightening section 80 has a plurality of cylindrical first cylindrical airflow straightening sections 82 arranged concentrically about the central axis of the circular first air intake port 64. Specifically, the first cylindrical airflow straightening sections 82 are divided into a number of sections at equal intervals with respect to the radius of the circle of the first air intake port 64. The length in the central axis direction of the first cylindrical airflow straightening section 82 is equal to the thickness of the first air intake port 64, and the surface of the casing 62 in the blower section 60 on the side of the first side surface 16, which includes the first air intake port 64, and the end face of the first cylindrical airflow straightening section 82 on the side of the first side surface 16, are flush with each other.

[0024] 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 70 in the blower section 60, thereby suppressing 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 unit 84 is divided into a number of equal-spaced portions around the circumference of the first air intake port 64, and further 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 unit in the central axis direction at the first air intake port 64 is equal to the thickness of the first air intake port 64, and the surface of the casing 62 of the blower unit 60 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. 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 straightening sections 82 and the multiple first radial straightening sections 84, and air that has passed through the first front air intake port 30 and the front-side air purifying section 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 believed that the air coming into the first air intake 64 from a direction perpendicular to the central axis of the first air intake 64 can be prevented from biasing toward the front surface 12 of the first air intake 64 by the first cylindrical straightening section 82 and the first radial straightening section 84, and can be sent from the first air intake 64 to the fan section 70 in the blower section 60, thereby preventing a reduction in performance.

[0027] Here, the first air intake port 64 is tentatively divided into three portions in the front-to-rear direction of the main body case 10. That is, the front surface 12 side of the first air intake port 64 is referred to as the first air intake port front surface portion 64a, the rear surface 14 side of the first air intake port 64 is referred to as the first air intake port rear surface portion 64b, and the portion between the front surface 12 side and the rear surface 14 side of the first air intake port 64 is referred to as the first air intake port central portion 64c. Although the details are not known, the dimension of the opening surrounded by adjacent first cylindrical rectifying portions 82 and adjacent first radial rectifying portions 84 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 for the first air intake port central portion 64c than for the first air intake port front surface portion 64a. As a result, it is believed that air that passes through first front air inlet 30 and front-side air purification unit 40 and flows between the surface of casing 62 having first air intake port 64 and first side surface 16 of main body case 10 from front surface 12 to rear surface 14 thereof is more likely to flow into casing 62 from the opening of first air intake central portion 64c than from the opening of first air intake front portion 64a into casing 62 because pressure loss is smaller. As a result, the air that flows perpendicular to the central axis of first air intake port 64 from front surface 12 to rear surface 14 of main body case 10 and arrives at first air intake port 64 is prevented from biasing toward the front surface 12 of first air intake port 64 by first cylindrical rectifying unit 82 and first radial rectifying unit 84, and can be sent from first air intake port 64 to fan unit 70 in blower unit 60, thereby preventing performance degradation. (Embodiment 2) Components similar to those in the first embodiment are given 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 at first front air inlet 30, second front air inlet 31, and air outlet 34.

[0028] 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, and 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 line BB of FIG. 6. FIG. 9 is a cross-sectional view taken along line CC of FIG. 6. FIGS. 8 and 9 show the first side surface 16. Inside the main body case 11, a front-side air purifying unit 40 is arranged behind the first front air inlet 30. Inside the main body case 11, a lower-side air purifying unit 42 is arranged above the upper edge of the second front air inlet 31 and the lower surface 22. The lower-side air purifying unit 42 is arranged above the lower surface 22 and above the upper edge of the second front air inlet 31. The front-side air purifying unit 40 and the bottom-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 bottom-side air purifying unit 42 facing the bottom surface 22. The front-side air purifying unit 40 and the bottom-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.

[0029] Inside the main body case 11, a storage space 50 is formed, surrounded by the front air purification section 40, the bottom air purification section 42, the rear surface 14, the first side surface 16, the second side surface 18, and the top surface 20. A blower 60 is disposed in the storage space 50. The blower 61 includes a casing 63, a first intake port 64, a second intake port 66, a motor 68, a fan unit 71, 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.

[0030] A first air intake port 64 is provided on the surface of the cylindrical portion of casing 63 facing first side surface 16, and a second air intake port 66 is provided on the surface of the cylindrical portion of casing 63 facing second side surface 18. In other words, first air intake port 64 faces first side surface 16, and second air intake port 66 faces second side surface 18. First air intake port 64 and second air intake port 66 are openings. Therefore, first air intake port 64 and second air intake port 66 connect the inside and outside of casing 63.

[0031] 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.

[0032] The fan section 71 includes a main plate portion 71a, a first blade portion 71b, and a second blade portion 71c.

[0033] Main plate portion 71a is disc-shaped and has a bowl-shaped recessed portion 71d in the center. Recessed portion 71d is shaped such that the center of main plate portion 71a is recessed toward first air intake port 64 of casing 63. A portion of motor 68 is disposed inside recessed portion 71d.

[0034] The first blade portions 71b are elongated plate-shaped with a generally arcuate cross section, and a large number of them are arranged in an annular shape on the periphery of one side (the first intake port 64 side of the casing 63) of the main plate portion 71a.

[0035] The second blade portions 71c are elongated plate-shaped with a generally arcuate 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.

[0036] 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 72, which is an opening in the casing 63, is provided in the upper part of the leg portion of the casing 63, and the outlet 72 is connected to the air outlet 34 on the top surface 20.

[0037] When motor 68 operates to rotate fan unit 71, air outside main body case 11 is drawn into storage space 50 through first front air inlet 30 and front air purifier 40, and also through second front air inlet 31 and bottom air purifier 42. Air within storage space 50 is drawn into casing 63 through first air inlet 64 and second air inlet 66, and then blown out of main body case 11 through outlet 72 and air outlet 34.

[0038] Inside the main body case 11, not only the front-side air purifying section 40 that passes air backward, but also the bottom-side air purifying section 42 that passes air upward, are provided, thereby maintaining dust collection performance. Furthermore, since no filter that passes air left and right is provided inside the main body case 11, the main body case 11 is made thinner in the left and right direction. Here, the cross-sectional air passage area of ​​the bottom-side air purifying section 42 is made larger than the opening area of ​​the second front air inlet 31, thereby reducing pressure loss.

[0039] According to this embodiment, inside the main body case 11, the front air purifying unit 40 is disposed behind the first front air inlet 30, and the lower air purifying unit 4 is disposed above the lower surface 22 and the second front air inlet 31. 2, dust collection performance can be maintained. Furthermore, inside the main body case 11, the front-side air purifying unit 40 is disposed behind the first front air inlet 30, and the bottom-side air purifying unit 42 is disposed above the bottom surface 22 and the second front air inlet 31. No other air purifying units are disposed, allowing the housing to be thinned horizontally. 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, because the bottom-side air purifying unit 42 is disposed facing the bottom surface 22, the bottom surface 22 side, which has not previously been 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 second side surface 18 sides.

[0040] 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.

[0041] 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 sent to the fan section 71 in the blower section 61, thereby preventing performance degradation.

[0042] The first flow straightening section 80 has a plurality of cylindrical first cylindrical flow straightening sections 82 arranged concentrically with 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 in the central axis direction of the first cylindrical flow straightening sections 82 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 the first cylindrical flow straightening section 82 on the first side surface 16 side are flush with each other.

[0043] As a result, first air intake port 64 is subdivided by the multiple first cylindrical rectifiers 82, 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 of first air intake port 64 when passing through first air intake port 64. As a result, it is thought that air is prevented from flowing unevenly into the area on front surface 12 of first air intake port 64, and that air that comes to first air intake port 64 from a direction perpendicular to the central axis of first air intake port 64 can be sent by first cylindrical rectifier 82 from the entire first air intake port 64 to fan section 71 in blower section 61, thereby suppressing performance degradation.

[0044] 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 unit 84 is 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 unit 84 is 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. 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.

[0045] As a result, the first air intake port 64 is subdivided by the multiple first cylindrical rectifying portions 82 and multiple first radial rectifying portions 84, and the 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, the air coming from a direction perpendicular to the central axis of the first air intake port 64 is directed through the first cylindrical rectifying portions 82 and the front-side air purifying portion 40. It is believed that the flow section 82 and the first radiation straightening section 84 can prevent the air from being biased toward the front surface 12 of the first air intake port 64 and send the air from the first air intake port 64 to the fan section 71 in the blower section 61, thereby preventing performance degradation.

[0046] Here, the first air intake port 64 is tentatively divided into three portions in the front-to-rear direction of the main body case 11. That is, the front surface 12 side of the first air intake port 64 is referred to as the first air intake port front surface portion 64a, the rear surface 14 side of the first air intake port 64 is referred to as the first air intake port rear surface portion 64b, and the portion between the front surface 12 side and the rear surface 14 side of the first air intake port 64 is referred to as the first air intake port central portion 64c. Although the details are not known, the dimension of the opening surrounded by adjacent first cylindrical rectifying portions 82 and adjacent first radial rectifying portions 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 portion 64c than for the first air intake port front surface portion 64a. As a result, it is believed that air that passes through first front air inlet 30 and front-side air purification unit 40 and 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 thereof is more likely to flow into casing 63 from the opening of first air intake central portion 64c than from the opening of first air intake front portion 64a into casing 63 because pressure loss is smaller. As a result, the air that flows perpendicular to the central axis of first air intake port 64 from front surface 12 to rear surface 14 of main body case 11 and arrives at first air intake port 64 can be prevented from biasing toward the front surface 12 of first air intake port 64 by first cylindrical flow straightener 82 and first radial flow straightener 84, and can be sent from first air intake port 64 to fan unit 71 in blower unit 61, thereby preventing performance degradation.

[0047] The second airflow straightening section 86 has a plurality of cylindrical second cylindrical airflow straightening sections 88 arranged concentrically with 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 the second cylindrical airflow straightening section 88 in the central axis direction is equal to the thickness of the second air intake port 66, and 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 end face of the second cylindrical airflow straightening section 88 on the second side surface 18 side are flush with each other.

[0048] As a result, second air intake port 66 is subdivided by the multiple second cylindrical rectifiers 88, 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 the front surface 12 side and the area on the underside 22 side of second air intake port 66 when passing through 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 second air intake port 66, and that air that comes to second air intake port 66 from a direction perpendicular to the central axis of second air intake port 66 can be sent by second cylindrical rectifiers 88 from the entire second air intake port 66 to fan section 71 in blower section 61, thereby suppressing performance degradation.

[0049] 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, and the surface of the casing 63 of the blower section 61 on the second side surface 18 side, including the second air intake port 66 and the second cylindrical rectifying section 88, is flush with the end face of the second radial rectifying section 90 on the second side surface 18 side. 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.

[0050] As a result, the second air intake port 66 is subdivided by the multiple second cylindrical rectifying sections 88 and the multiple second radial rectifying sections 90, and the air that has passed through the first front air intake port 30 and the front-side air purifying section 40 is When passing through second air intake port 66, the air is less likely to flow into the area on the front surface 12 side of second air intake port 66. As a result, it is thought that the air coming to second air intake port 66 from a direction perpendicular to the central axis of second air intake port 66 can be prevented from biasing toward front surface 12 side of second air intake port 66 by second cylindrical rectifying section 88 and second radial rectifying section 90, and can be sent from second air intake port 66 to fan section 71 in blower section 61, thereby preventing performance degradation.

[0051] Here, the second air intake port 66 is tentatively divided into three portions in the front-to-rear direction of the main body case 11. That is, the front surface 12 side of the second air intake port 66 is referred to as the second air intake port front surface portion 66a, the rear surface 14 side of the second air intake port 66 is referred to as the second air intake port rear surface portion 66b, and the portion between the front surface 12 side and the rear surface 14 side of the second air intake port 66 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 rectifying portions 88 and adjacent second radial rectifying portions 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 portion 66a. As a result, it is believed that air that passes through first front air inlet 30 and front-side air purification unit 40 and flows 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 flows more easily through the opening of second air inlet central portion 66c into casing 63 because pressure loss is smaller than through the opening of second air inlet front portion 66a into casing 63. As a result, the air that flows perpendicular to the central axis of second air inlet 66 from front surface 12 to rear surface 14 of main body case 11 and arrives at second air inlet 66 is prevented from being biased 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, thereby preventing performance degradation.

[0052] Additionally, an airflow direction changing section 92 is provided inside the main body case 11, between the front-side air purifying section 40 and the blower section 61. FIG. 4 shows the configuration of the airflow direction changing section 92. The airflow direction changing section 92 changes the direction of air that has passed through the front-side air purifying section 40 toward the first side surface 16 and the second side surface 18. Specifically, the airflow direction changing section 92 includes a plurality of plate-shaped airflow direction changing sections 92 extending obliquely from the rear surface 14 of the front-side air purifying section 40 toward the first side surface 16 in the range from the center of the first front air inlet 30 in the left-right direction toward the first side surface 16. Furthermore, a plurality of plate-shaped airflow direction changing sections 92 extending obliquely from the rear surface 14 of the front-side air purifying section 40 toward the second side surface 18 is provided in the range from the center of the first front air inlet 30 in the left-right direction toward the second side surface 18.

[0053] This allows the air flowing in the rearward direction after passing through the front-side air purification section 40 to change direction between the first side surface 16 and the second side surface 18, making it easier for the air to flow to the first air intake 64 and the second air intake 66, thereby suppressing performance degradation.

[0054] 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.

[0055] As a result, dust collection is maintained because not only is there a front air purifying section 40 that passes air backward, but there is also a bottom 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 bottom air purifying section 42 is made larger than the opening area of ​​the second front air inlet 31, thereby reducing pressure loss.

[0056] Furthermore, lower-side air purification unit 42 extends from front surface 12 to rear surface 14 inside main body case 11, forming a space 52 between it and the lower surface 22 of main body case 11. Air drawn in through second front surface inlet 31 passes through space 52 and lower-side air purification unit 42 in that order, and is likely to flow toward rear surface 14 inside main body case 11. As a result, air drawn in through second front surface inlet 31 is likely to flow into casing 63 from first air intake rear surface portion 64b, which is on the rear surface 14 side of first air intake 64, and second air intake rear surface portion 66b, which is on the rear surface 14 side of second air intake 66.

[0057] The present disclosure has been described above based on examples, but the present disclosure is not limited to the above examples, and it can be easily inferred that various improvements and modifications are possible within the scope of the present disclosure without departing from the spirit and scope of the present disclosure. [Industrial Applicability]

[0058] The air purifying device according to the present invention is expected to be used as an air purifying device for home or office use. [Explanation of symbols]

[0059] 10 Main unit case 11 Main unit case 12 Front 14 Rear 16 First aspect 18 Second aspect 20 Top side 22 Bottom side 30 First front intake 31 Second front intake 34 Air outlet 40 Front air purifier 42 Lower air purifying unit 50 storage space 52 Space 60 Blower 61 Blower 62 Casing 63 Casing 64 First intake port 64a Front part of first intake port 64b 1st intake port rear part 64c Center part of first intake port 66 Second intake port 66a Front part of second intake port 66b 2nd intake port rear part 66c Second intake central part 68 Motor 70 Fan Club 70a Main plate part 70b First wing part 70d recessed part 71 Fan Club 71a Main plate part 71b First wing part 71c Second wing part 71d recessed part 72 Discharge port 80 1st rectifier 82 First cylindrical flow straightening section 84 1st radiation rectifier 86 2nd rectifier 88 Second cylindrical flow straightening section 90 Second radiation rectifier 92 Wind direction change section 100 Air Purifier 110 Air Purifier

Claims

1. 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 inlet provided on the front surface of the main body case; a front air purifying unit disposed inside the main body case and rearward of the first front air inlet; a blower unit disposed inside the main body case in a storage space surrounded by the front air purification unit, the lower surface, the rear surface, the first side surface, the second side surface, and the upper surface, the blower unit having a first air intake port facing the first side surface and an air outlet connected to the upper surface; an air outlet provided on the top surface of the main body case and connected to the outlet of the air blower; a first rectifying portion provided in the first intake port; An air purifying device comprising:

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

3. The air purifying device according to claim 1 , wherein the first airflow straightening portion includes a plurality of cylindrical first airflow straightening portions arranged concentrically about a central axis of the circular first air intake port.

4. The air purifying device according to claim 2 , wherein the second airflow straightening portion includes a plurality of cylindrical second airflow straightening portions arranged concentrically about a central axis of the circular second air intake port.

5. The air purifying device according to claim 3 , wherein the first rectifying portion has a plurality of linear first radial rectifying portions provided radially about a central axis of the circular first air intake port.

6. The air purifying device according to claim 4 , wherein the second rectifying portion includes a plurality of linear second radial rectifying portions provided radially about a central axis of the circular second air intake port.

7. a wind direction changing unit is provided between the front air purifying unit and the blower unit; The air purifying device according to claim 5 or 6, wherein the air direction changing section changes the direction of air that has passed through the front side air purifying section to the first side surface side and the second side surface side.

8. a lower surface-side air purifying unit is provided below the air blowing unit inside the main body case, a second front air intake port is provided on the front surface of the main body case below the first front air intake port; The air purifying device according to claim 5 or 6, wherein the air drawn in through the second front air inlet by the blower is blown to the air outlet via the lower air purifying section.

9. the lower-side air purification unit extends from the front surface to the rear surface inside the main body case, and has a space between it and the lower surface of the main body case; The air purifying device according to claim 8 , wherein the air sucked in through the second front air inlet by the blower is blown to the lower air purifying unit through the space.

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