Air purification device

Abstract

To provide an air purification device capable of evenly suctioning a suction port arranged at a distance while eliminating physical obstacles.SOLUTION: An air purification device comprises: a housing extending in a first direction and having a suction space therein; two suction ports arranged at distance in the housing in the first direction, and opening toward an upper side; a suction unit that suctions the suction space; and a purification unit that purifies air suctioned into the suction space. The suction space has a first suction space that communicates with both of the two suction ports, and a second suction space that is provided separately from the first suction space, connected to the suction unit, and opens to a position in the first direction equidistant to the two suction ports in the first suction space.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an air purification device. [Background technology]

[0002] In times when there is concern about the spread of infection through droplets containing pathogens such as viruses and bacteria, it is recommended that people wear masks at all times when meeting other people. However, wearing a mask poses problems such as not being able to see facial expressions and not being able to eat or drink.

[0003] One way to prevent droplet infection when not wearing a mask is to use a partition, for example. However, there are concerns about the spread of droplets that go over the partition and the droplets remaining on the partition. In addition, when partitions are used, there are problems such as the risk of collisions and falls, poor appearance, and obstacles to conversation, making them ineffective and unusable.

[0004] Therefore, as an alternative countermeasure to installing partitions, Patent Document 1 discloses a method of solving the problem of droplet infection prevention capabilities, for example by dividing a space and using a shielding member with an inlet that draws in air containing droplets, and an outlet that blows the sucked in air away from the shielding member.

[0005] Patent Document 2 discloses an air purifier that purifies air drawn in from an inlet and releases it from an air outlet. Patent Document 1 discloses that the air purifier suppresses droplet infection even when a mask is not worn by drawing in and purifying air containing droplets. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2022-135640 A [Patent Document 2] Patent Publication No. 2022-13577 Summary of the Invention [Problem to be solved by the invention]

[0007] The air purifying device disclosed in Patent Document 1 does not solve the problem of physical obstacles. In the air purifier disclosed in Patent Document 2, suction ports are provided along the entire longitudinal length of the casing, and therefore suction is also performed in areas other than the position facing a person across the air purifier, reducing suction efficiency.

[0008] For this reason, for example, it is conceivable to provide suction ports locally at separate positions on the casing for each position facing a person. In this case, the suction amount of the suction port on the side closer to the suction part that sucks the suction space inside the casing in the longitudinal direction of the casing will be greater than the suction amount of the suction port on the side farther from the suction part, resulting in a problem of non-uniform suction.

[0009] The present invention has been made in consideration of the above points, and has an object to provide an air purifying device that can suck air evenly from suction ports that are located apart while eliminating physical obstacles. [Means for solving the problem]

[0010] The present invention has the following aspects. An air purifying device comprising: a housing extending in a first direction and having a suction space therein; two suction ports arranged in the housing at a distance in the first direction and opening upward; a suction unit that suctions the suction space; and a purification unit that purifies the air sucked into the suction space, wherein the suction space has a first suction space that communicates with both of the two suction ports, and a second suction space that is separated from the first suction space, connected to the suction unit, and opens in the first direction at a position equidistant from the two suction ports in the first suction space. Effect of the Invention

[0011] The present invention can provide an air purifying device that can suck air uniformly from suction ports that are disposed apart from each other. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is an external perspective view of the air purifying device 1 placed on a table tb. [Diagram 2] 1 is a partial cross-sectional view of the first housing 11 perpendicular to the Y direction at a position where a suction port 11B is provided. [Diagram 3] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 4] 1 is a partial cross-sectional view showing a first housing 11 of Comparative Example 1. FIG. [Diagram 5] 1 is a partial cross-sectional view showing a first housing 11 of Comparative Example 1. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] BEST MODE FOR CARRYING OUT THE DISCLOSURE Hereinafter, an embodiment of an air purifying device of the present invention will be described with reference to Figs. The following embodiment shows one aspect of the present invention, does not limit the present invention, and can be modified as desired within the scope of the technical idea of ​​the present invention. In addition, in the following drawings, the scale and number of each structure are different from the actual structure in order to make each configuration easier to understand.

[0014] FIG. 1 is a perspective view of the exterior of an air purifying device 1 placed on a table tb. As shown in FIG. 1, the table tb has a top board 2 and legs 3.

[0015] The top plate 2 has a rectangular shape in a plan view. The top plate 2 is not limited to a rectangular shape in a plan view, and may have a polygonal shape other than a rectangle, a circular shape, an elliptical shape, or an oval shape. The legs 3 extend in the vertical direction and support the top board 2 from below. A plurality of legs 3 are arranged at intervals. In this embodiment, four legs 3 are arranged at the corners of the rectangular top board 2.

[0016] In the following description, the vertical direction is defined as the Z direction, the direction along the long side of the tabletop 2 is defined as the X direction, and the direction perpendicular to the Z and X directions and along the short side of the tabletop 2 is defined as the Y direction. The X direction corresponds to the first direction, and the Y direction corresponds to the second direction.

[0017] The air purifying device 1 purifies the sucked air. The air purifying device 1 has a housing 10, a suction unit 30, and a purification unit 40. The housing 10 has a first housing 11, a second housing 12, and a third housing 13.

[0018] The first housing 11 has a rectangular parallelepiped shape. The first housing 11 is placed on the upper surface of the tabletop 2. The first housing 11 extends in the X direction. The first housing 11 is placed in the center in the Y direction on the upper surface of the tabletop 2. When people are seated facing each other in the Y direction across the table tb, the first housing 11 is disposed in the center in the direction in which the people face each other.

[0019] The first housing 11 has an intake port 11B that opens on the top surface 11A. In this embodiment, two intake ports 11B are disposed. The two intake ports 11B are disposed apart from each other in the X direction.

[0020] Fig. 2 is a partial cross-sectional view of first housing 11 at a position where suction port 11B is provided, taken perpendicular to the Y direction. Fig. 3 is a cross-sectional view taken along line AA in Fig. 2.

[0021] The two suction ports 11B are formed in a rectangular shape of the same dimensions when viewed from above. The two suction ports 11B have a dimension in the X direction longer than a dimension in the Y direction. That is, for the two suction ports 11B, the dimension L3 in the X direction of the suction port 11B located on the +X side is the same as the dimension L4 in the X direction of the suction port 11B located on the -X side. For the two suction ports 11B, the dimension L5 in the Y direction of the suction port 11B located on the +X side is the same as the dimension L6 in the Y direction of the suction port 11B located on the -X side. Furthermore, the dimensions L3 and L4 in the X direction are longer than the dimensions L5 and L6 in the Y direction.

[0022] The dimensions L3 and L4 of the two suction ports 11B in the X direction are, for example, 90 mm, and the dimensions L5 and L6 of the two suction ports 11B in the Y direction are, for example, 10 mm.

[0023] As shown in FIGS. 2 and 3, the first housing 11 has a top wall 21, a bottom wall 22, a partition wall 23, and a side wall 24.

[0024] The top wall 21 is located on the upper side of the first housing 11 and has a rectangular plate shape extending in the X direction when viewed in the Z direction. The two suction ports 11B described above penetrate the top wall 21 in the up-down direction. The bottom wall 22 is located on the lower side of the first housing 11 and has a rectangular plate shape extending in the X direction when viewed in the Z direction. The partition wall 23 is disposed between the top wall 21 and the bottom wall 22 in the up-down direction. The partition wall 23 has a rectangular plate shape extending in the X direction when viewed in the Z direction. The side walls 24 are located on both sides in the Y direction of the top wall 21, the bottom wall 22, and the partition wall 23. The side walls 24 have a rectangular plate shape extending in the X direction when viewed in the Y direction.

[0025] The first housing 11 has a suction space 50 therein. The suction space 50 has a first suction space 51 and a second suction space 52. The suction space 50 is partitioned into the first suction space 51 and the second suction space 52. The first suction space 51 is surrounded and formed by the top wall 21, the partition wall 23, and the side wall 24. The first suction space 51 has a rectangular cross section perpendicular to the X direction and extends in the X direction. The first suction space 51 communicates with both of the two suction ports 11B. By communicating the first suction space 51 with the suction port 11B, air including, for example, droplets from the upper side of the first housing 11 can be sucked through the suction port 11B when the first suction space 51 is sucked.

[0026] Both ends of the first suction space 51 in the X direction are shielded by shielding walls 51A. The position of the shielding walls 51A in the X direction is the position of the outer end of the suction port 11B in the X direction. If the shielding walls 51A were not provided, when the first suction space 51 is suctioned, the outside of the suction port 11B in the X direction would also be suctioned, and the suction force of the air from the suction port 11B may decrease. By shielding both ends of the first suction space 51 in the X direction by the shielding walls 51A, the suction force for the first suction space 51 can be efficiently used as the suction force for the air from the suction port 11B.

[0027] The second suction space 52 is surrounded by the bottom wall 22, the partition wall 23, and the side wall 24. The second suction space 52 has a rectangular cross section perpendicular to the X direction and extends in the X direction. The second suction space 52 opens to the first suction space 51. The second suction space 52 opens to the first suction space 51 through an opening 23A formed in the partition wall 23. The second suction space 52 communicates with the first suction space 51 through the opening 23A. As described later, the second suction space 52 is connected to the suction unit 30 through the third suction space 53 and the fourth suction space 54. Since the second suction space 52 communicates with the first suction space 51 through the opening 23A, the first suction space 51 can be sucked through the opening 23A when the second suction space 52 is sucked.

[0028] That is, since the second suction space 52 is connected to the first suction space 51 through the opening 23A, when the second suction space 52 is suctioned, air containing, for example, droplets from the upper side of the first housing 11 can be sucked in through the opening 23A, the first suction space 51 and the suction port 11B.

[0029] The -X side end of the second suction space 52 is shielded by a shielding wall 52A. The position of the shielding wall 52A in the X direction is the position of the -X side end of the opening 23A. If the shielding wall 52A is not provided, when the second suction space 52 is suctioned, the -X side of the opening 23A is also suctioned, and the suction force of the first suction space 51 from the opening 23A may decrease. By shielding the -X side end of the second suction space 52 with the shielding wall 52A, the suction force for the second suction space 52 can be efficiently used as the suction force for air from the suction port 11B.

[0030] The first housing 11 is formed of, for example, a resin material. The thickness of the top wall 21, bottom wall 22, partition wall 23, and side wall 24 described above is, for example, 3 mm. The vertical dimension L11 of the first housing 11 is preferably 30 mm or more and 100 mm or less. If the vertical dimension L11 of the first housing 11 is less than 30 mm, the vertical dimensions of the first suction space 51 and the second suction space 52 cannot be sufficiently secured, and the amount of air suction may decrease. If the vertical dimension L11 of the first housing 11 exceeds 100 mm, the feeling of pressure increases when the first housing 11 is placed on the top plate 2, and the vertical dimensions of the first suction space 51 and the second suction space 52 become large, which requires the suction unit 30 to be enlarged.

[0031] The dimension L12 in the Y direction of the first housing 11 is preferably 30 mm or more and 100 mm or less. If the dimension L12 in the Y direction of the first housing 11 is less than 30 mm, the dimension in the Y direction of the first suction space 51 and the second suction space 52 cannot be sufficiently secured, and the amount of air suction may decrease. If the dimension L12 in the Y direction of the first housing 11 exceeds 100 mm, the feeling of pressure increases when the first housing 11 is placed on the top plate 2, and the dimensions in the Y direction of the first suction space 51 and the second suction space 52 become large, which requires the suction unit 30 to be enlarged.

[0032] By setting the vertical dimension L11 and the Y-direction dimension L12 of the first housing 11 to 30 mm or more and 100 mm or less, the amount of air suction can be secured and the feeling of pressure when the first housing 11 is placed on the top plate 2 and the suction section 30 can be prevented from becoming too large.

[0033] The second suction space 52 opens at a position in the X direction equidistant to the two suction ports 11B in the first suction space 51. More specifically, a distance L1 from the -X side end of suction port 11B located on the +X side to the +X side end of opening 23A is the same as a distance L2 from the +X side end of suction port 11B located on the -X side to the -X side end of opening 23A.

[0034] The cross-sectional dimensions of the first suction space 51 and the second suction space 52 are formed to be the same. The vertical dimension L21 of the first suction space 51 is the same as the vertical dimension L22 of the second suction space 52. The Y-direction dimension L31 of the first suction space 51 is the same as the Y-direction dimension L32 of the second suction space 52.

[0035] The dimension L21 in the up-down direction of the first suction space 51 is preferably 10 mm or more and 50 mm or less. The dimension L31 in the Y direction of the first suction space 51 is preferably 20 mm or more and 100 mm or less. If the vertical dimension L21 of the first suction space 51 is less than 10 mm, it will not contribute to uniform suction. If the vertical dimension L21 of the first suction space 51 exceeds 50 mm, it will contribute to uniform suction, but if the vertical dimension L11 of the first housing 11 is constant, the vertical dimension L11 of the second suction space 52 will become smaller, which may hinder the air flow.

[0036] If the dimension L31 in the Y direction of the first suction space 51 is less than 20 mm, the distance from the suction port 11B to the side wall 24 becomes short and it is not possible to contribute to uniform suction. If the dimension L31 in the Y direction of the first suction space 51 exceeds 100 mm, it contributes to uniform suction, but the dimension L31 in the Y direction of the first housing 11 becomes large and the feeling of pressure becomes strong. Therefore, it is possible to reduce the dimensions L5 and L6 in the Y direction of the suction port 11B, but in this case, the pressure loss will be large.

[0037] 1, the second housing 12 is connected to the end of the first housing 11 on the +X side. The second housing 12 extends downward from the end of the first housing 11 on the +X side. The lower end of the second housing 12 protrudes downward beyond the top board 2 of the table tb. The second housing 12 has a third suction space 53 therein. The third suction space 53 is in communication with the second suction space 52.

[0038] The third housing 13 is connected to the lower end of the second housing 12. The third housing 13 extends from the lower end of the second housing 12 to the -X side along the lower surface of the top board 2. The third housing 13 has a fourth suction space 54 therein. The fourth suction space 54 is in communication with the third suction space 53.

[0039] The purification unit 40 is connected to the end of the third housing 13 on the -X side. The purification unit 40 is fixed, for example, to the lower surface of the top plate 2. The purification unit 40 purifies the air that flows in from the fourth suction space 54 of the third housing 13. The purification unit 40 captures and inactivates bacteria, viruses, and the like using, for example, a filter.

[0040] The suction unit 30 is disposed on the -X side of the purification unit 40. The suction unit 30 is fixed to, for example, the lower surface of the top plate 2. The suction unit 30 sucks in air on the +X side, for example, by discharging air to the -X side by rotating a fan. As an example, the suction unit 30 is equipped with a blower fan.

[0041] In the air purifying device 1 configured as described above, the suction section 30 performs a suction operation, thereby sucking in air containing, for example, droplets from the upper side of the first housing 11 through the fourth suction space 54, the third suction space 53, the second suction space 52, the opening 23A, the first suction space 51 and the two suction ports 11B.

[0042] Here, the distance L1 from the end of suction port 11B on the +X side to the end of opening 23A on the +X side is the same as the distance L2 from the end of suction port 11B on the +X side to the end of opening 23A on the -X side. Therefore, the suction force loss to the position of suction port 11B that is distance L1 away from the suction force at opening 23A in first suction space 51 is the same for suction port 11B on the +X side and suction port 11B on the -X side. In addition, the dimensions L3 and L4 in the X direction are the same for suction port 11B on the +X side and suction port 11B on the -X side, and the dimensions L5 and L6 in the Y direction are the same for suction port 11B on the +X side and suction port 11B on the -X side.

[0043] Therefore, in the air purifying device 1 of this embodiment, it is possible to uniformly suck air from the suction ports 11B that are arranged apart from each other. Furthermore, in the air purifying device 1 of this embodiment, the first housing 11 extending in the X direction is placed on the top plate 2 of the table tb, so that physical obstacles can be eliminated. EXAMPLES

[0044] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following description.

[0045] (Examples 1 to 5, Comparative Examples 1 to 4) A sample of the first housing was produced according to the specifications shown in [Table 1]. The sample of the first housing in Comparative Example 1 is Sample 11C in which no partition is provided and two suction ports communicate with a single suction space 50 as shown in FIG. The sample of the first housing in Comparative Example 2 is sample 11D in which one of the two suction ports communicates with first suction space 51 and the other suction port communicates with second suction space 52 as shown in FIG.

[0046] [Evaluation method] For each sample of Examples 1 to 5 and Comparative Examples 1 to 4, the wind speed was measured at positions P1 to P6 from the side of the two suction ports closer to the second housing 12 as shown in FIG. 1, and the suction rate at each position was visually evaluated. The evaluation results were as follows: "absorbs quite evenly" was marked as "◎◎", "absorbs evenly" was marked as "◎", "absorbs somewhat evenly" was marked as "◯", and "absorbs not evenly" was marked as "X". "◎◎", "◎", and "〇" were categorized as pass marks, and everything else was categorized as fail marks.

[0047] [Table 1]

[0048] As shown in Table 1, the samples of Examples 1 to 5 in which the height of the first suction space was 10 mm or more and 50 mm or less and the width of the first suction space was 20 mm or more and 100 mm or less were evaluated as being good in terms of suction rate. In particular, it was confirmed that the samples of Examples 4 to 5 in which the height of the first suction space was 20 mm or more and 50 mm or less and the width of the first suction space was 40 mm or more and 100 mm or less were evaluated as being high.

[0049] On the other hand, in the sample of Comparative Example 1 in which two suction ports are connected to a single suction space 50, the sample of Comparative Example 3 in which the suction port width is 30 mm, and the sample of Comparative Example 4 in which the suction port length is 300 mm, it was not possible to measure the wind speed and therefore it was not possible to evaluate the suction rate. In the sample of Comparative Example 2 in which one of the two suction ports is connected to the first suction space 51 and the other suction port is connected to the second suction space 52, in addition to the large difference in wind speed between positions P1 to P3 close to the suction portion and positions P4 to P6 far from the suction portion, the suction rate could not be evaluated.

[0050] Although the preferred embodiment of the present invention has been described above with reference to the attached drawings, it goes without saying that the present invention is not limited to the above example. The shapes and combinations of the components shown in the above example are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention. [Explanation of symbols]

[0051] REFERENCE SIGNS LIST 1...air purifying device, 10...housing, 11B...suction port, 30...suction section, 40...purifying section, 50...suction space, 51...first suction space, 52...second suction space

Claims

1. A housing extending in a first direction and having a suction space therein; Two suction ports are disposed apart from each other in the first direction in the housing and open upward; A suction unit that suctions the suction space; A purification unit that purifies the air sucked into the suction space; Equipped with The suction space is a first suction space communicating with both of the two suction ports; a second suction space that is partitioned from the first suction space, is connected to the suction unit, and opens in a position in the first direction that is equidistant from the two suction ports in the first suction space; An air purifying device comprising:

2. The two suction ports are When viewed from above, they are formed into a rectangle of the same dimensions, The dimension in the first direction is longer than the dimension in a second direction perpendicular to the up-down direction and the first direction.

2. The air purifying device according to claim 1.

3. A cross section of the first suction space perpendicular to the first direction is rectangular.

3. The air purifying device according to claim 2.

4. The dimension of the first suction space in the vertical direction is 10 mm or more and 50 mm or less, The dimension in the second direction is 20 mm or more and 100 mm or less.

4. The air purifying device according to claim 3.

Images