Air Purification Device

Abstract

The present invention discloses an air purification device, which includes a shell, a wind shield and an air guide. The shell is provided with an air outlet; the wind shield is mounted on the shell, the wind shield is arranged opposite to the air outlet, and a wind dispersion gap is formed between the edge of the wind shield and the edge of the air outlet; the air guide is arranged at the edge of the air outlet of the shell, the wind guide is provided with an air guide wall, and one end of the air guide wall away from the edge of the air outlet extends forward. The air purification device of the present invention can reduce the air volume loss of the air purification device to increase the air volume of the air purification device.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification equipment, and in particular to an air purification device. Background Art

[0002] Air purification devices are usually used to purify air, such as purifying viruses, bacteria, dust or particulate matter in the air. In the related art, the air purification device blows the purified air along its circumference, so as to avoid blowing directly forward to the user. However, the way that the air purification device blows air along the circumference will cause a large loss of air volume, thereby reducing the air volume of the air purification device. Summary of the invention

[0003] The main purpose of the present invention is to provide an air purification device, aiming to reduce the air volume loss of the air purification device so as to increase the air output of the air purification device.

[0004] To achieve the above-mentioned purpose, the present invention proposes an air purification device, which includes a housing, a wind shield and an air guide. The housing is provided with an air outlet; the wind shield is mounted on the housing, the wind shield is arranged opposite to the air outlet, and a wind dispersion gap is formed between the edge of the wind shield and the edge of the air outlet; the air guide is arranged at the edge of the air outlet of the housing, the wind guide is provided with an air guide wall, and one end of the air guide wall away from the edge of the air outlet extends forward.

[0005] Optionally, the wind guide wall includes a first wind guide portion extending laterally from an edge of the wind dispersion gap, and a second wind guide portion extending forward from the first wind guide portion.

[0006] Optionally, the air guide wall is arranged in an overall arc shape from one end close to the edge of the air outlet to the end away from the edge of the air outlet.

[0007] Optionally, the curvature of the wind guide wall is the same as the first elliptical curve x 2 / H1 2 +y 2 / L1 2 =1, the curvatures between two adjacent endpoints are the same; wherein H1 is the height of the air guide wall extending forward from the air outlet; and L1 is the length of the air guide wall protruding laterally from the air outlet.

[0008] Optionally, the length of the air guide wall protruding laterally from the air outlet is greater than or equal to the height of the air guide wall extending forward from the air outlet.

[0009] Optionally, the length of the air guide wall is greater than or equal to 3 mm and less than or equal to 15 mm; and / or the height of the air guide wall is greater than or equal to 3 mm and less than or equal to 12 mm.

[0010] Optionally, the wind shield has an inner plate surface, an outer plate surface, and a wind guiding side surface connecting the outer plate surface and the inner plate surface, and the wind guiding side surface is arranged to be inclined from the inside to the outside in a direction away from another opposite wind guiding side surface.

[0011] Optionally, the width of the wind-guiding side surface along the width direction of the wind shield plate is greater than or equal to the length of the wind-guiding side surface along the thickness direction of the wind shield plate.

[0012] Optionally, the width of the wind-guiding side surface is greater than or equal to 3 mm and less than or equal to 15 mm; and / or the length of the wind-guiding side surface is greater than or equal to 3 mm and less than or equal to 12 mm.

[0013] Optionally, the curvature of the wind-guiding side surface is equal to the curvature of the second elliptical curve x 2 / H2 2 +y 2 / L2 2 =1, the curvature between two adjacent endpoints is the same; wherein H2 is the length of the wind-guiding side along the thickness direction of the wind shield; L2 is the width of the wind-guiding side along the width direction of the wind shield.

[0014] Optionally, the air purification device further includes a wind wheel installed in the shell; the ratio of the width of the wind shield to the diameter of the wind wheel is greater than or equal to 0.9 and less than or equal to 1.1.

[0015] Optionally, the wind shield is movably mounted on the shell, and the wind shield is movable relative to the shell to open and close the wind dissipation gap.

[0016] The technical solution of the present invention is to install a wind shield on the shell, and the wind shield is arranged opposite to the air outlet to form a wind dispersion gap between the edge of the wind shield and the edge of the air outlet; and to arrange an air guide member at the edge of the air outlet, and the air guide member is provided with an air guide wall, and the end of the air guide wall away from the edge of the air outlet extends forward, so that the air diffused laterally from the wind dispersion gap can be deflected and blown forward by the air guide member, thereby avoiding the blown air from flowing back backwards, reducing the air volume reflux loss, and ensuring that the air purification device obtains a larger air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A front view of an embodiment of an air purification device of the present invention;

[0019] Figure 2 for Figure 1 Sectional view along line II;

[0020] Figure 3 for Figure 1 A side view of the air purification device;

[0021] Figure 4 for Figure 3 A cross-sectional view along line II-II;

[0022] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0023] Figure 6 for Figure 5 A schematic diagram in which the bending angle of the air guide wall is marked;

[0024] Figure 7 for Figure 5 A schematic diagram in which the dimensions of some structures are marked;

[0025] Figure 8 for Figure 3 A cross-sectional view along line III-III;

[0026] Fig. 9 A schematic diagram of a first elliptical curve corresponding to the air guide wall of the air purification device of the present invention;

[0027] Fig.10 A schematic diagram of a second elliptical curve corresponding to the air guide side surface of the air purification device of the present invention;

[0028] Fig.11 The figure is a curve diagram of the width of the air dispersion gap and the air volume of the air purification device of the present invention.

[0029] Description of Figure Numbers:

[0030] Label name Label name 100 case 230 Wind guide side 110 Air Inlet 300 Air guide 120 Air outlet 310 Wind guide wall 130 Air gap 311 The first air guide 140 Air outlet grille 312 Second air guide 200 Wind deflector 400 Fan 210 Inner panel 500 Purification module 220 outer deck

[0031] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides an embodiment of an air purification device, which can be used to purify pollutants in the air to provide clean air for users, such as purifying any one or more of pollutants such as viruses, bacteria, dust or particulate matter in the air. The air purification device of the present invention can blow the purified air out from its circumference, and can also reduce the air volume loss of the air purification device, thereby ensuring that the air purification device has a large air output.

[0036] See also Figures 1 to 3 In one embodiment of the air purification device of the present invention, the air purification device comprises a housing 100, a wind shield 200 and an air guide 300. The housing 100 is provided with an air outlet 120; the wind shield 200 is mounted on the housing 100, the wind shield 200 is arranged opposite to the air outlet 120, and a wind dissipation gap 130 is formed between the edge of the wind shield 200 and the edge of the air outlet 120; the air guide 300 is arranged at the edge of the air outlet 120 of the housing 100 (such as Figure 4 and Figure 5As shown), the air guide member 300 is provided with an air guide wall 310, and one end of the air guide wall 310 away from the edge of the air outlet 120 extends forward.

[0037] Specifically, a cavity is provided inside the housing 100, and the cavity can be used to install the internal components of the air purification device (such as a fan, a purification module 500, etc.). An air inlet 110 is provided on the back of the housing 100; an air outlet 120 is provided on the front side of the housing 100, and the air outlet 120 is connected to the air inlet 110. The windshield 200 is installed on the housing 100 and is located in front of the air outlet 120; the windshield 200 is spaced apart from the air outlet 120, so that a wind dissipation gap 130 is spaced apart between the edge of the windshield 200 and the edge of the air outlet 120.

[0038] Optionally, the windshield 200 is arranged in a plate shape, and the windshield 200 has four edges, and a wind dispersing gap 130 is formed between the edges of at least two windshields 200 and the edges of the air outlet 120 opposite thereto, so that the air purification device can at least disperse the wind in two different lateral directions. For example, a wind dispersing gap is formed between the two edges (upper edge and lower edge) of the windshield 200 extending along its width direction and the edge of the air outlet 120; or, a wind dispersing gap is formed between the two edges (left edge and right edge) of the windshield 200 extending along its length direction and the edge of the air outlet 120. Specifically, a wind dispersing gap 130 is formed between the four edges of the windshield 200 and the edges of the air outlet 120, so that the wind dispersing gap 130 surrounds the circumference of the air outlet 120 in a full circle, and then the air purification device can supply air from the circumferential side of the air outlet 120.

[0039] When the air purification device is working, air enters the interior of the housing 100 through the air inlet 110 for purification. The purified air is blown forward from the air outlet 120. After encountering the wind shield 200, it is intercepted by the wind shield 200 and cannot continue to blow forward directly. It diffuses laterally from the wind dispersing gap 130 between the edge of the wind shield 200 and the edge of the air outlet 120. The air flow diffused from the wind dispersing gap 130 is guided by the air guide 300 to be blown forward to supply the user, and cannot flow back backward. In this way, it can prevent the air flow from blowing forward directly to the user, and can also prevent the air flow from flowing back backward, reducing the air volume reflux loss, thereby ensuring that the air purification device obtains a larger air volume.

[0040] As for the specific way of installing the windshield plate 200 on the housing 100, there are many design methods. For example, in one embodiment, the windshield plate 200 is movably installed on the housing 100, so that the windshield plate 200 can move relative to the housing 100 in the front-to-back direction to open and close the wind dissipation gap 130, or adjust the width of the wind dissipation gap 130. Of course, in other embodiments, the windshield plate 200 can also be fixedly installed on the housing 100. The details will be described in detail later.

[0041] The technical solution of the present invention is to install a wind shield 200 on the shell 100, and the wind shield 200 is arranged opposite to the air outlet 120 to form a wind dispersion gap 130 between the edge of the wind shield 200 and the edge of the air outlet 120; and to arrange an air guide member 300 at the edge of the air outlet 120, and the air guide member 300 is provided with an air guide wall 310, and the end of the air guide wall 310 away from the edge of the air outlet 120 extends forward, so that the air flow diffused laterally from the wind dispersion gap 130 can be deflected and blown forward by utilizing the air guide wall 310 of the air guide member 300, which can not only reduce the wind resistance of the air flow, but also prevent the air flow from flowing back to the air inlet 110 of the air purification device, thereby greatly reducing the air volume loss, thereby ensuring that the air purification device obtains a larger air volume.

[0042] See also Figure 4 and Figure 5 In one embodiment, the air guide 300 may be integrally formed with the housing 100; or, the air guide 300 is a detachable accessory that is independently manufactured and formed, and the air guide 300 is detachably mounted on the housing 100. In other embodiments, an air outlet grille 140 is disposed at the air outlet 120 of the housing 100; the air guide 300 may also be integrally formed with the air outlet grille 140.

[0043] In this embodiment, the air guide member 300 is a detachable accessory, and the air guide member 300 is detachably mounted on the housing 100. Optionally, the air guide wall 310 of the air guide member 300 includes a first air guide portion 311 extending laterally from the edge of the wind dispersion gap 130, and a second air guide portion 312 extending forwardly obliquely from the first air guide portion 311. The second air guide portion 312 can be connected to the first air guide portion 311 in a smooth transition.

[0044] Specifically, the first air guide portion 311 of the air guide wall 310 can be set as a plane extending laterally from the edge of the wind dispersion gap 130; the second air guide portion 312 of the air guide wall 310 can be set as an inclined surface or an arc surface extending forwardly from the first air guide portion 311, so that an angle is formed between the extension direction of the first air guide portion 311 of the air guide wall 310 and the extension direction of the second air guide portion 312. Figure 6In FIG. 1 , α represents the angle formed by the extension direction of the first air guide portion 311 and the extension direction of the second air guide portion 312. The angle is preferably greater than 90°.

[0045] When the air purification device is working, the airflow diffused from the wind dispersing gap 130 first flows laterally along the first air guide portion 311 of the air guide wall 310, so that the airflow avoids the edge of the wind shield 200 and avoids the airflow colliding with the edge of the wind shield 200; then gradually deflects and flows toward the second air guide portion 312 through the first air guide portion 311, and finally deflects and blows forward along the extension direction of the second air guide portion 312. The airflow deflected and blown forward will not blow directly to the user, and can also avoid the airflow colliding with the edge of the wind shield 200, thereby reducing the air volume loss caused by the collision and reducing the impact noise.

[0046] See also Figure 4 and Figure 7 In one embodiment, the difference from the above-mentioned embodiment is that the air guide wall 310 is arranged in an arc shape as a whole from one end close to the edge of the air outlet 120 to the end away from the edge of the air outlet. That is to say, the air guide wall 310 is arranged as an arc surface as a whole, so that the air guide wall 310 smoothly transitions from back to front to reduce the resistance of the air guide wall 310 to the airflow. The airflow flows along the air guide wall 310 and gradually deflects forward, which greatly reduces the resistance in the direction of airflow deflection, thereby effectively reducing the air volume loss. Of course, in other embodiments, the air guide wall 310 may also be an entire inclined surface, or it may be formed by connecting multiple sections of inclined surfaces in sequence. Of course, in other embodiments, the air guide wall 310 may also be arranged in an arc shape as a whole from the edge of the air outlet 120 to the front.

[0047] Furthermore, the curvature of the wind guide wall 310 is consistent with the first elliptical curve x 2 / H1 2 +y 2 / L1 2 =1, the curvature of the curve segment between two adjacent endpoints is the same; wherein H1 is the height of the wind guide wall 310 extending forward from the air outlet 120; L1 is the length of the wind guide wall 310 protruding laterally from the air outlet 120. It can be understood that the first elliptical curve x 2 / H1 2 +y 2 / L1 2 =1 is an elliptic curve with H1 as the minor semi-axis and L1 as the major semi-axis (L1>H1).

[0048] like Fig. 9 As shown, the first elliptic curve x 2 / H1 2 +y 2 / L1 2=1 means that the first elliptical curve has two endpoints P1 and P2 located at both ends of its major axis, and two endpoints P3 and P4 located at both ends of its minor axis, and the endpoints P1 to P4 divide the first elliptical curve into four curve segments of the same length. The curvature of the wind guide wall 230 should be the same as the curvature of the curve segment between the endpoint of one of the minor axes of the first elliptical curve (such as P1) and the endpoint of one of the major axes (such as P3 or P4). With this arrangement, the curvature transition of the curved surface of the wind guide wall 230 can be smoother, and the wind guiding effect can be better.

[0049] See also Figure 4 and Figure 7 In one embodiment, the length of the wind guide wall 310 protruding laterally from the air outlet 120 is greater than or equal to the height of the wind guide wall 310 extending forward from the air outlet 120. That is, L1≥H1. In this way, it can be ensured that the length of the wind guide wall 310 protruding laterally from the air outlet 120 is relatively large, so that the wind guide wall 310 can continue to guide the airflow blown out laterally from the wind dispersion gap 130 for a short distance laterally, which is equivalent to extending the path of the airflow blowing out laterally, avoiding the airflow from colliding and interfering with the wind shield 200 at the wind dispersion gap 130 and causing a large air volume loss. If the height of the wind guide wall 310 extending forward from the air outlet 120 is relatively small, it can avoid the second wind guide portion 312 of the wind guide wall 310 blocking the wind dispersion gap 130, ensuring that the airflow can diffuse out from the wind dispersion gap 130.

[0050] It is considered that if the length of the wind guide wall 310 is too long, the wind guide wall 310 will occupy the space in the width direction of the housing 100, causing the width dimension of the housing 100 to increase; and if the length of the wind guide wall 310 is too short, the second wind guide portion 312 of the wind guide wall 310 will be closer to the wind dispersion gap 130, which may block part of the wind outlet surface of the wind dispersion gap 130, and is not conducive to guiding the airflow to flow along the wall, resulting in a poor wind guide effect. Therefore, the length of the wind guide wall 310 should be kept within a certain range.

[0051] In view of this, an experimental study was conducted on the length of the air guide wall 310 of the air purifier, and the experimental analysis showed that when the length of the air guide wall 310 is greater than or equal to 3 mm and less than or equal to 15 mm (i.e., 3mm≤L1≤15mm), the air guide wall 310 occupies a smaller space in the width direction of the shell 100, and the width dimension of the shell 100 does not increase significantly, so that the shell 100 can be kept within a smaller width dimension range; and the second air guide portion 312 of the air guide wall 310 is spaced at an optimal distance from the wind dispersion gap 130, so as not to block the blowing of the airflow, and is also conducive to guiding the airflow to flow along the wall, resulting in a better air guiding effect.

[0052] Therefore, optionally, the length of the air guide wall 310 is greater than or equal to 3 mm and less than or equal to 15 mm. The specific value of L1 can be, but is not limited to, 3 mm, 5 mm, 8 mm, 10 mm, 12 mm, 14 mm, 15 mm, etc. Further, when the length of the air guide wall 310 is greater than or equal to 5 mm and less than or equal to 10 mm (i.e., 3 mm ≤ L1 ≤ 15 mm), the air volume increases relatively significantly, which can greatly increase the air volume of the air purification device.

[0053] It is also considered that since the second air guiding portion 312 of the air guiding wall 310 is opposite to the wind dispersing gap 130, if the height of the air guiding wall 310 is too large, the air guiding wall 310 is easy to block the larger air outlet surface of the wind dispersing gap 130, so that the airflow will collide with the air guiding wall 310 head-on after being blown out of the wind dispersing gap 130, resulting in a significant loss of air volume; and if the height of the air guiding wall 310 is too small, the air guiding wall 310 will separate from the airflow before guiding the airflow to deflect forward, so that the angle of the subsequent airflow deflection forward is too small, and the air guiding effect is not obvious. Therefore, the height of the air guiding wall 310 should also be kept within a certain range.

[0054] In view of this, the height of the air guide wall 310 of the air purifier was experimentally studied, and the experimental analysis showed that when the height of the air guide wall 310 is greater than or equal to 3 mm and less than or equal to 12 mm (i.e., 3mm≤H1≤12mm), the air guide wall 310 not only blocks the air outlet surface of the wind dispersion gap 130 less, allowing the airflow to be blown out smoothly from the wind dispersion gap 130 and flow out along the wall of the air guide wall 310 without any obvious air volume loss; moreover, the air guide wall 310 guides the airflow to deflect forward at a preferred angle (such as 35°~45°) before separating from the airflow, so that the air guiding effect of the air guide wall 310 is better.

[0055] Therefore, optionally, the height of the air guide wall 310 is greater than or equal to 3 mm and less than or equal to 12 mm. The specific value of H1 can be, but is not limited to, 3 mm, 5 mm, 8 mm, 10 mm, 12 mm, etc. Further, when the height of the air guide wall 310 is greater than or equal to 3 mm and less than or equal to 5 mm (i.e., 3 mm ≤ H1 ≤ 5 mm), the air volume increases relatively significantly, which can greatly increase the air volume of the air purification device.

[0056] See also Figure 4 and Figure 7Based on any of the above embodiments, the wind shield 200 is movably mounted on the housing 100, and the wind shield 200 is movable relative to the housing 100 to open and close the wind dissipation gap 130. Specifically, the wind shield 200 has an initial position for closing the wind dissipation gap 130 and an open position for opening the wind dissipation gap 130, and the wind shield 200 is movable relative to the housing 100 to switch between the initial position and the open position.

[0057] When the air purifier is idle, the windshield 200 is in the initial position, at which time the windshield 200 covers the air outlet 120, and fits the shell 100 in the circumference of the windshield 200, and closes the wind dispersion gap 130. It is worth mentioning that the air purifier does not have a front panel on the front side of the shell 100; when the windshield 200 is in the initial position, the windshield 200 covers the front side of the shell 100, and the windshield 200 also serves as the front panel of the shell 100. When the air purifier is used, the windshield 200 is movably switched to the open position, at which time, there is a distance between the windshield 200 and the air outlet 120, so that a wind dispersion gap 130 is separated between the circumference of the windshield 200 and the air outlet 120.

[0058] As for the installation method of the windshield 200 being movably installed on the housing 100, there can be many design methods. For example, in one embodiment, the windshield 200 is rotatably installed on the housing 100, so that the windshield 200 can rotate relative to the housing 100 to switch positions. In another embodiment, the windshield 200 is movable along the housing 100 in the front-back direction, so that the windshield 200 can move relative to the housing 100 to switch positions.

[0059] In one embodiment, considering that the conventional windshield has an inner plate surface facing the air outlet, an outer plate surface facing away from the air outlet, and a side surface connecting the inner plate surface and the outer plate surface, and the side surface is perpendicular to both the inner plate surface and the outer plate surface, such a conventional windshield will form a sharp corner at the position where the side surface and the inner plate surface are connected. When the airflow blown out from the air outlet 120 flows to the air dispersion gap 130, the airflow is likely to collide with the corner of the side surface of the windshield 200, and a small amount of air volume loss is likely to occur at this position.

[0060] See also Figure 4 and Figure 7 In view of this, in order to avoid this situation, optionally, the wind shield 200 has an inner panel surface 210 facing the air outlet 120, an outer panel surface 220 facing away from the air outlet 120, and a wind guiding side surface 230 connecting the outer panel surface 220 and the inner panel surface 210, and the wind guiding side surface 230 is inclined from the inside to the outside in a direction away from the other opposite wind guiding side surface 230.

[0061] Specifically, the windshield 200 is hollow, and a cavity 201 is formed inside the windshield. The cavity 201 separates the inner plate surface 210 and the outer plate surface 220 of the windshield 200, so that the wind-guiding side surface 230 can be designed to be larger, so that the wind-guiding side surface 230 has a larger surface area. The windshield 200 is provided with wind-guiding side surfaces 230 at its left and right edges and the lower edge, and a wind-dispersing gap 130 is formed between the wind-guiding side surface 230 and the edge of the air outlet 120. The inner end of the wind-guiding side surface 230 is smoothly connected to the inner plate surface 210, and no sharp edges are formed at the position where the wind-guiding side surface 230 and the inner plate surface 210 are connected. Therefore, when the airflow blows from the air outlet 120 to the wind-dispersing gap 130, the airflow will flow along the wall of the wind-guiding side surface 230 when it contacts the wind-guiding side surface 230, so that it is guided by the wind-guiding side surface 230 to be blown out forward. In this way, the airflow can be prevented from colliding with the edge of the wind shield 200, thereby reducing the loss of air volume; and the airflow can be prevented from flowing back backwards.

[0062] Furthermore, the wind-guiding side surface 230 is arranged in an arc shape from the inner plate surface 210 to the outer plate surface 220. In other words, the wind-guiding side surface 230 is arranged in an arc shape, so that the wind-guiding side surface 230 smoothly transitions from the back to the front, so as to reduce the resistance of the wind-guiding side surface 230 to the airflow. The airflow flows along the wind-guiding side surface 230 and gradually deflects forward, which greatly reduces the resistance in the deflection direction of the airflow, thereby effectively reducing the air volume loss. Of course, in other embodiments, the wind-guiding side surface 230 can also be a whole inclined surface, or it can be formed by connecting multiple inclined surfaces in sequence.

[0063] Furthermore, the curvature of the wind guide side surface 230 is consistent with the second elliptical curve x 2 / H2 2 +y 2 / L2 2 =1, wherein H2 is the length of the wind-guiding side surface 230 along the thickness direction of the wind shield 200; L2 is the width of the wind-guiding side surface 230 along the width direction of the wind shield 200. It can be understood that the second elliptic curve x 2 / H2 2 +y 2 / L2 2 =1 is an elliptic curve with H2 as the minor semi-axis and L2 as the major semi-axis (L2>H2).

[0064] like Fig.10 As shown, the second elliptic curve x 2 / H2 2 +y 2 / L2 2=1 means that the second elliptical curve has two endpoints P1 and P2 located at both ends of its major axis, and two endpoints P3 and P4 located at both ends of its minor axis, and the endpoints P1 to P4 divide the second elliptical curve into four curve segments of the same length. The curvature of the wind-guiding side surface 230 should be the same as the curvature of the curve segment between the endpoint of one of the minor axes of the second elliptical curve (such as P1) and the endpoint of one of the major axes (such as P3 or P4). With such a setting, the curvature transition of the curved surface of the wind-guiding side surface 230 can be smoother, and the wind-guiding effect can be better.

[0065] See also Figure 4 and Figure 7 In one embodiment, the length of the wind-guiding side surface 230 extending in the width direction of the wind shield 200 is greater than or equal to the height of the wind-guiding side surface 230 extending in the thickness direction of the wind shield 200. That is, L2≥H2. In this way, it can be ensured that the length of the wind-guiding side surface 230 extending from the inner plate surface 210 to the outer plate surface 220 is relatively large, so that the wind-guiding side surface 230 can continue to guide the airflow blown out from the wind-dispersing gap 130 laterally for a short distance, which is equivalent to extending the path of the airflow blowing out laterally, avoiding the airflow from colliding and interfering with the wind shield 200 at the wind-dispersing gap 130 and causing a large loss of air volume. The height of the wind-guiding side surface 230 extending forward from the air outlet 120 is relatively small, so that the thickness of the wind shield 200 can be reduced, thereby reducing the volume of the wind shield 200.

[0066] It is considered that if the length of the wind-guiding side surface 230 is too large, the wind-guiding side surface 230 will extend the width of the wind shield 200 accordingly, causing the width of the wind shield 200 to increase; and if the length of the wind-guiding side surface 230 is too small, the wind-guiding path of the wind-guiding side surface 230 is short, which may not be conducive to guiding the airflow to blow forward obliquely, resulting in poor wind-guiding effect. Therefore, the length of the wind-guiding side surface 230 should be kept within a certain range.

[0067] In view of this, an experimental study was conducted on the length of the air-guiding side 230 of the air purifier. Through experimental analysis, it was found that when the length of the air-guiding side 230 is greater than or equal to 3 mm and less than or equal to 15 mm (i.e., 3mm≤L2≤15mm), the air-guiding side 230 has a sufficient air-guiding path to guide the airflow to flow forward at an angle, so that the air-guiding effect of the air-guiding side 230 is better; and the width of the wind shield 200 is kept within a small range, and not too large.

[0068] Therefore, optionally, the length of the wind-guiding side surface 230 is greater than or equal to 3 mm and less than or equal to 15 mm. The specific value of L2 can be, but is not limited to, 3 mm, 5 mm, 8 mm, 10 mm, 12 mm, 14 mm, 15 mm, etc. Further, when the length of the wind-guiding side surface 230 is greater than or equal to 5 mm and less than or equal to 10 mm (i.e., 3 mm ≤ L2 ≤ 10 mm), the air volume increases relatively significantly, which can greatly increase the air volume of the air purification device.

[0069] It is also considered that the thickness of the windshield 200 is actually the distance between the inner plate surface 210 and the outer plate surface 220. The greater the height of the wind-guiding side surface 230, the greater the distance between the inner plate surface 210 and the outer plate surface 220 of the windshield 200, which will make the thickness of the windshield 200 larger and the weight of the windshield 200 increase accordingly. If the height of the wind-guiding side surface 230 is too small, the area of ​​the wind-guiding side surface 230 is small and the wind-guiding effect is not obvious. Therefore, the height of the wind-guiding side surface 230 should also be kept within a certain range.

[0070] In view of this, an experimental study was conducted on the height of the wind-guiding side 230 of the air purifier. Through experimental analysis, it was found that when the height of the wind-guiding side 230 is greater than or equal to 3 mm and less than or equal to 12 mm (i.e., 3mm≤H2≤12mm), the distance between the inner panel surface 210 and the outer panel surface 220 of the wind shield 200 is smaller, the thickness of the wind shield 200 is not too large, and the weight of the wind shield 200 is lighter; and the wind-guiding side 230 has a larger area and a larger inclination. The wind-guiding side 230 can guide the airflow to deflect forward at a preferred angle (such as 35°~45°) before separating from the airflow, so that the wind-guiding effect of the wind-guiding side 230 is better.

[0071] Therefore, optionally, the height of the wind-guiding side surface 230 is greater than or equal to 3 mm and less than or equal to 12 mm. The specific value of H2 can be, but is not limited to, 3 mm, 5 mm, 8 mm, 10 mm, 12 mm, etc. Further, when the height of the wind-guiding side surface 230 is greater than or equal to 3 mm and less than or equal to 5 mm (i.e., 3 mm ≤ H2 ≤ 5 mm), the air volume increases relatively significantly, which can greatly increase the air volume of the air purification device.

[0072] See also Figure 2 , Figure 4 and Figure 8Based on any of the above embodiments, the air purification device further includes a wind wheel 400 installed in the housing 100, and the wind wheel 400 is arranged opposite to the air outlet 120. The number of wind wheels 400 can be one or two. The air purification device further includes a plurality of purification modules 500 installed in the housing 100, and the plurality of purification modules 500 are arranged between the air inlet side of the wind wheel 400 and the air inlet 110.

[0073] Specifically, there are two wind wheels 400, which are respectively the first wind wheel 410 and the second wind wheel 420; the first wind wheel 410 and the second wind wheel 420 are arranged in the up-down direction and are opposite to the wind shield 200. The multiple purification modules 500 include multiple first purification modules 510 and multiple second purification modules 520; wherein the multiple first purification modules 510 are arranged between the first wind wheel 410 and the air inlet 110, and the multiple first purification modules 510 are arranged in sequence along the air inlet direction; the multiple second purification modules 520 are arranged between the second wind wheel 420 and the air inlet 110, and the multiple second purification modules 520 are arranged in sequence along the air inlet direction. The multiple purification modules 500 can be configured as purification modules 500 for purifying different pollutants, or as purification modules 500 for purifying the same kind of pollutants.

[0074] The wind wheel 400 is a diagonal flow wind wheel 400. When the wind wheel 400 rotates, the wind wheel 400 drives the airflow to propel forward along its axial direction and rotate and diffuse, and the airflow is separated at the maximum circumferential position of the wind wheel 400. In order to ensure that the wind shield 200 can intercept most of the airflow blowing forward, optionally, the ratio of the width of the wind shield 200 to the diameter of the wind wheel 400 is greater than or equal to 0.9 and less than or equal to 1.1. Figure 5 In the figure, L0 represents the width of the wind shield 200; D represents the diameter of the wind wheel 400. Therefore, 0.9D≤L0≤1.1D. In this way, the width of the wind shield 200 and the width of the wind wheel 400 can be substantially equal, and the wind shield 200 can intercept the airflow that blows forward directly diffused by the wind wheel 400, so that most of the airflow can be blown out laterally from the wind dispersing gap 130.

[0075] As for the height of the wind shield 200, the height of the wind shield 200 should be greater than twice the diameter of the wind wheel 400, so that the wind shield 200 can intercept the airflow blown forward by the two wind wheels 400. For example, the height of the wind shield 200 can be greater than or equal to 600 mm and less than or equal to 1200 mm, that is, 600 mm ≤ H0 ≤ 1200 mm.

[0076] As for the width of the air dispersing gap 130 of the housing 100, optionally, the width of the air dispersing gap 130 is greater than or equal to 40 mm and less than or equal to 70 mm, that is, 40 mm ≤ W ≤ 70 mm. In order to study the influence of the width of the air dispersing gap 130 of the air purification device of the present invention on the air volume, an experiment was conducted under the condition that only the width of the air dispersing gap 130 was different and other experimental conditions were the same, and the following was obtained according to the experimental results. Fig.11 As shown in the air outlet width-air volume curve. It can be seen that when the width of the air dispersion gap 130 is greater than or equal to 50mm and less than or equal to 70mm, the air volume of the air purification device is relatively large, and the air volume of the air purification device can be as high as 780m 3 / h~820m 3 / h.

[0077] Therefore, optionally, the width of the wind dispersing gap 130 is greater than or equal to 50 mm and less than or equal to 70 mm. In actual production, the width of the wind dispersing gap 130 can be reasonably configured according to the air volume or wind speed required by the air purification device. For example, according to the formula W = Q / 2*v*(H0+L0); wherein Q represents the air volume of the air purification device; v represents the wind speed required by the air purification device; L0 represents the width of the wind shield 200; and H0 represents the height of the wind shield 200.

[0078] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air purification device, characterized in that: The air purification device comprises: A housing, wherein the housing is provided with an air outlet; a wind shield, the wind shield being mounted on the housing, the wind shield being arranged opposite to the air outlet, and a wind dissipation gap being formed between an edge of the wind shield and an edge of the air outlet; and An air guide member, the air guide member is arranged at the edge of the air outlet of the shell, the air guide member is provided with an air guide wall, and one end of the air guide wall away from the edge of the air outlet extends forward; The air guide wall is arranged in an overall arc shape from one end close to the edge of the air outlet to the other end away from the edge of the air outlet; The curvature of the wind guide wall is consistent with the first elliptical curve x 2 / H1 2 +y 2 / L1 2 =1, the curvature of the curve segment between two adjacent endpoints is the same; wherein H1 is the height of the air guide wall extending forward from the air outlet; L1 is the length of the air guide wall protruding laterally from the air outlet.

2. The air purification device according to claim 1, characterized in that: The wind guiding wall includes a first wind guiding portion extending laterally from an edge of the wind dispersing gap, and a second wind guiding portion extending forward from the first wind guiding portion.

3. The air purification device according to any one of claims 1 to 2, characterized in that: The length of the air guide wall protruding laterally from the air outlet is greater than or equal to the height of the air guide wall protruding forward from the air outlet.

4. The air purification device according to claim 3, characterized in that: The length of the air guide wall is greater than or equal to 3 mm and less than or equal to 15 mm; and / or the height of the air guide wall is greater than or equal to 3 mm and less than or equal to 12 mm.

5. The air purification device according to any one of claims 1 to 2, characterized in that: The wind shield plate comprises an inner plate surface, an outer plate surface, and a wind guiding side surface connecting the outer plate surface and the inner plate surface, and the wind guiding side surface is arranged in an inclined shape from the inside to the outside in a direction away from another opposite wind guiding side surface.

6. The air purification device according to claim 5, characterized in that: The width of the wind-guiding side surface along the width direction of the wind shield plate is greater than or equal to the length of the wind-guiding side surface along the thickness direction of the wind shield plate.

7. The air purification device according to claim 6, characterized in that: The width of the wind-guiding side surface is greater than or equal to 3 mm and less than or equal to 15 mm; and / or the length of the wind-guiding side surface is greater than or equal to 3 mm and less than or equal to 12 mm.

8. The air purification device according to claim 5, characterized in that: The wind guiding side surface is arranged in an arc shape from the inner plate surface to the outer plate surface.

9. The air purification device according to claim 8, characterized in that: The curvature of the wind-guiding side surface is consistent with the curvature of the second elliptical curve x 2 / H2 2 +y 2 / L2 2 =1, the curvature between two adjacent endpoints is the same; wherein H2 is the length of the wind-guiding side along the thickness direction of the wind shield; L2 is the width of the wind-guiding side along the width direction of the wind shield.

10. The air purification device according to any one of claims 1 to 2, characterized in that: The air purification device also includes a wind wheel installed in the shell; the ratio of the width of the wind shield to the diameter of the wind wheel is greater than or equal to 0.9 and less than or equal to 1.

1.

11. The air purification device according to any one of claims 1 to 2, characterized in that: The wind shield is movably mounted on the shell, and the wind shield is movable relative to the shell to open and close the wind dissipation gap.

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