Air handling unit

Abstract

The present application discloses an air treatment device, which belongs to the field of air treatment technology. The air treatment device includes: a laser purification device for purifying air; the laser purification device includes: a purification shell, on which an air inlet and an air outlet are formed, and a purification air duct connecting the air inlet and the air outlet, and a reflective mirror layer is provided on the inner wall of the purification shell; a laser generator, which is connected in the purification shell, and the laser generator emits a laser into the purification air duct, and the laser is reflected multiple times on the reflective mirror layer to sterilize the air in the purification air duct; an air quality sensor, which is set at the air inlet or upstream of the air inlet with reference to the flow path of the air, and is used to detect the air quality a; a controller, which is used to control the intermittent opening of the laser generator, and control the switching time of the laser generator according to the air quality a. This air treatment device uses laser to purify the air, and has the advantage of high purification efficiency.

Description

Technical Field

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

[0002] The purification function of air treatment devices is mostly to set a purification device at the air inlet of the air treatment device, or to set an ion generator at the air outlet. The purification effect of the current purification method has many limitations and the purification efficiency is not high. As people's demand for air purification gradually increases, the concept of using laser purification has been proposed.

[0003] However, the irradiation area of ​​the laser beam is small, and when used for purification of flowing air, it needs to work for a long time, resulting in increased power consumption and cost. Summary of the invention

[0004] The present application provides an air treatment device, which increases the radiation range of the laser through multiple reflections of the laser, thereby improving the air purification efficiency.

[0005] An air treatment device comprises: a casing having an inlet and an outlet, and an air duct connecting the inlet and the outlet; and a laser purification device, which is arranged in the air duct and is used to purify the air in the air duct; the laser purification device comprises: a purification shell, on which an air inlet and an air outlet are formed, and a purification air duct connecting the air inlet and the air outlet, and a reflective mirror layer is provided on the inner wall of the purification shell; a laser generator, which is connected in the purification shell, and the laser generator emits laser into the purification air duct, and the laser is reflected on the reflective mirror layer for multiple times to sterilize the air in the purification air duct; an air quality sensor, which is arranged between the inlet and the air inlet and is used to detect the air quality a; a controller, which is used to control the intermittent opening of the laser generator and control the switching time of the laser generator according to the air quality a.

[0006] The air treatment device of the present application is provided with a laser purification device, which uses the laser energy to quickly kill bacteria to achieve better purification effect and purification efficiency. Moreover, in the laser purification device, since the inner wall of the purification shell is set as a mirror, the principle of mirror reflection can be used to increase the radiation range of the laser in the purification air duct, ensuring that all flowing air can be purified.

[0007] Since the laser generator is turned on intermittently, the service life of the laser generator can be extended to meet the life requirements of the entire machine application; it is also beneficial to the heat dissipation of the laser generator, ensuring the normal performance of the product and extending the life of the laser generator; in addition, it can reduce power consumption and has the advantage of energy saving.

[0008] In some embodiments, the laser generator is turned on every T ON duration, then turn off T OFFDuration; when a<a1, the laser generator is controlled to shut down; when a1≤a<a2, it enters the energy-saving purification mode, and the switching duration of the laser generator satisfies: T ON <T OFF ; When a2≤a<a3, it enters the general purification mode, and the switching time of the laser generator satisfies: T ON =T OFF ; When a≥a3, enter the strong purification mode, and the switching time of the laser generator satisfies: T ON >T OFF ; Among them, T ON , T OFF , a1, a2, a3 are preset values, and a1<a2<a3.

[0009] In some embodiments, the laser generator has multiple laser generators; the laser generator turns on T ON Once, close T OFF One time is one cycle, and multiple laser generators work in rotation according to the cycle.

[0010] In some embodiments, when a1≤a<a2, the energy-saving purification mode is entered; when a2≤a<a3, the general purification mode is entered; in one cycle, in the energy-saving purification mode, n1×T ON =T OFF ; In general purification mode, T ON =T OFF ; Among them, T ON , T OFF is a preset value, and n1>1.

[0011] In some embodiments, there are m laser generators, which are denoted as Q1, Q2, ..., Q m ; m laser generators work in rotation: Q1 turns on T ON After that, when shutting down, Q2 is switched to turn on T ON , and so on, until Q m Turn on T ON Finally, it returns to the Q1 cycle while shutting down.

[0012] In some embodiments, it also includes: a human sensing sensor, which is arranged on the laser purification device and is used to detect the approach of a person; and a controller is used to control the laser generator to shut down when it is detected that someone is approaching.

[0013] In some embodiments, the reflective mirror layer is aluminum foil or tin foil.

[0014] In some embodiments, the reflective mirror layer is made of metal or glass.

[0015] In some embodiments, the reflective mirror layer is bonded to the inner wall of the purification housing.

[0016] In some embodiments, the shape of the purification housing corresponds to the shape of the air duct.

[0017] In some embodiments, the purification shell is in the shape of a cuboid, the air inlet and the air outlet are respectively located on opposite sides of the purification shell, and the laser generator is disposed on a side wall of the purification shell adjacent to the air inlet.

[0018] In some embodiments, the laser purification device also includes: air guide blades, which are swingably connected to the purification air duct; the controller is used to: obtain the swing angle of the air guide blades according to the working mode selected by the user and the preset data table, and control the air guide blades to swing to the corresponding angle; wherein the data table contains corresponding data of the swing angle of the air guide blades under different working modes.

[0019] In some embodiments, it includes: a casing; a fan, arranged in the casing, for driving air flow; the controller is also used to obtain the wind speed of the fan according to the working mode selected by the user and a preset data table, and control the fan to operate at the corresponding wind speed; wherein the data table contains corresponding data of the wind speed of the fan under different working modes.

[0020] In some embodiments, the laser purification device also includes: air guide blades, which are swingably connected to the purification air duct; the controller is used to: obtain the swing angle of the air guide blades according to the wind shield selected by the user and a preset data table, and control the air guide blades to swing to a corresponding angle; wherein the data table contains corresponding data on the swing angle of the air guide blades under different wind shields. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 shows a schematic diagram of an air handling device according to some embodiments;

[0022] Figure 2 A schematic diagram of a laser purification device according to an embodiment is shown;

[0023] Figure 3 shows a schematic diagram of a laser purification device according to another embodiment;

[0024] Figure 4 A schematic diagram of a laser purification device according to yet another embodiment is shown;

[0025] Figure 5 shows a schematic diagram of laser reflection according to some embodiments;

[0026] Figure 6 shows a schematic diagram of laser reflection according to other embodiments;

[0027] Figure 7 A schematic diagram of a laser purification device according to another embodiment is shown;

[0028] Figure 8 A schematic diagram of an air guide blade in a purification air duct according to some embodiments is shown;

[0029] Fig. 9 Schematic diagrams of air guide blades in a purification air duct according to other embodiments are shown;

[0030] Fig.10 A schematic diagram showing a driving structure of an air guide blade according to some embodiments;

[0031] Fig.11 A schematic diagram showing a light shielding plate in a purification air duct in a shielding position according to some embodiments is shown;

[0032] Fig.12 A schematic diagram showing a light shield in an open position in a purification air duct according to some embodiments;

[0033] Fig.13 A schematic diagram showing a light shielding plate in an open position in a purification air duct according to other embodiments is shown;

[0034] Fig.14 A schematic diagram showing a driving structure of a light barrier according to some embodiments;

[0035] Fig.15 shows a logic timing diagram of two lasers in energy-saving purification mode according to some embodiments;

[0036] Fig.16 shows a logic timing diagram of two lasers in a general purification mode according to some embodiments;

[0037] Fig.17 shows a logic timing diagram of two lasers in strong purge mode according to some embodiments;

[0038] Fig.18 A schematic diagram showing a laser purification device and a high voltage static power source according to some embodiments is shown;

[0039] Fig.19 Schematic diagrams showing laser purification devices and high-voltage static power sources according to other embodiments;

[0040] Fig. 20 Schematic diagrams showing laser purification devices and high-voltage static power sources according to further embodiments;

[0041] Fig.21 shows a schematic diagram of an air treatment device according to some other embodiments;

[0042] In the above figures: 10, casing; 11, inlet; 12, outlet; 13, air duct; 20, fan; 30, laser purification device; 31, purification shell; 311, air inlet; 312, air outlet; 313, purification air duct; 314, convex portion; 315, first shell; 316, second shell; 317, intermediate shell; 32, laser generator; 33, air guide blade; 331, first air guide blade; 332, second air guide blade; 333, rotating shaft; 34, connecting rod; 341, rack; 351, motor; 352, gear; 36, fixing rod; 37, light shield; 371, air inlet light shield; 372, air outlet light shield; 38, driving motor; 40, high-voltage static power source; 41, positive high-voltage static power source; 42, negative high-voltage static power source; 100, air handling unit; 110, air duct. DETAILED DESCRIPTION

[0043] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0044] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The air treatment device of the present application is described in detail below with reference to the accompanying drawings.

[0048] Reference Figure 1 As shown, Figure 1 The middle arrow indicates the direction of air flow. The air treatment device according to the embodiment of the present application includes a housing 10 having an inlet 11 and an outlet 12, a fan 20 for circulating air to the inside or outside of the housing 10, and a laser purification device 30 for purifying the air.

[0049] The casing 10 forms the general appearance of the air treatment device, and is provided with an inlet 11 and an outlet 12. Air enters the casing 10 from the inlet 11, and after being treated, is blown back into the room from the outlet 12. An air duct 13 connecting the inlet 11 and the outlet 12 is also provided in the casing 10. After entering the casing 11, the air flows along the air duct 13.

[0050] The fan 20 is disposed in the air duct 13. The fan 20 is used to blow out air so that the air can flow from the inlet 11 to the outlet 12.

[0051] The air handling device of the present application may be an air conditioner, a fresh air blower, a dehumidifier, etc. Regardless of the type, the air handling device needs to purify the air.

[0052] The laser purification device 30 is disposed in the air duct 13 to sterilize the air flowing through the air duct 13. Specifically, the laser purification device 30 is disposed at the inlet 11 or in the air duct 13 to sterilize and purify the air from the inlet 11.

[0053] In other embodiments, reference Fig.21 The air handling device includes an air handling machine 100 and an air duct 110. The air duct 110 is connected between the air handling machine 100 and the room to realize the air transportation between the two.

[0054] In this embodiment, the air handling device 100 may be a central air conditioner with an air duct, an air duct unit, a total heat exchanger, etc. Most of these air handling devices are installed on the ceiling, and the air handling device 100 is connected to the room through the air duct 110.

[0055] The air handling machine 100 has an air duct 13 therein, and the laser purification device 30 may be disposed in the air duct 13 .

[0056] In other implementations, the laser purification device 30 may be disposed in the air duct 110 to sterilize the air flowing through the air duct 110 .

[0057] Laser is a high-energy photon stream that can cause absorption, stimulation, oscillation or ionization of biological molecules, resulting in the breaking or partial breaking of certain chemical bonds, and even chromosome distortion. The mechanism of laser purification of microorganisms (such as bacteria, viruses, etc.) is as follows:

[0058] Thermal effect: The laser is absorbed by bacteria or their adhesions, causing a sharp rise in temperature and destroying the bacterial tissue structure;

[0059] Chemical effects: Laser can cause chemical bonds of cell molecules to break;

[0060] Mechanical effect: Laser shock compresses and deforms cells until they break;

[0061] Ionization effect: The plasma generated by laser has a certain killing effect on bacteria.

[0062] Laser can achieve sterilization in a short time, so using laser sterilization can achieve better air purification effect.

[0063] Reference Figures 2 to 4 The laser purification device 30 includes a purification housing 31 and a laser generator 32 for emitting laser.

[0064] The purification housing 31 forms the general appearance of the laser purification device 30. An air inlet 311 and an air outlet 312 are formed on the housing. Figure 1 The air enters the housing 10 from the inlet 11 , then enters the laser purification device 30 from the air inlet 311 , and flows into the air duct 13 from the air outlet 312 after being purified in the laser purification device 30 .

[0065] Therefore, on the air flow path, the air inlet 311 is closer to the inlet 11 than the air outlet 312 . In other words, the air inlet 311 is located upstream of the air outlet 312 .

[0066] The air inlet 311 and the air outlet 312 are connected to form a purification air duct 313 in the purification housing 31. The air entering the air inlet 311 flows toward the air outlet 312 along the purification air duct 313.

[0067] The laser generator 32 can be connected to the purification air duct 313 by means of screws, snaps or bonding, etc. The laser generator 32 emits laser outward to achieve air purification through laser.

[0068] Since the laser beam emitted by the laser generator 32 is very thin and highly directional, the area radiated by the laser is relatively small, and only a small part of the air in the air duct can be purified. In order to improve the purification rate, in some embodiments of the present application, the inner wall of the purification housing 31 adopts a mirror design, and the mirror is used to increase the reflection of the laser light inside the purification air duct 313. Specifically, the inner wall of the purification housing 31 can be provided with a reflective mirror layer to enhance the reflection through the mirror.

[0069] The air treatment device of the present application has a laser purification device 30 disposed therein, and utilizes the characteristic of laser energy for rapid sterilization to achieve better purification effect and purification efficiency.

[0070] Moreover, in the laser purification device 30, since the inner wall of the purification housing 31 is set to a mirror surface, the principle of mirror reflection can be used to increase the radiation range of the laser in the purification air duct 313 to ensure that the flowing air can be purified.

[0071] According to some embodiments of the present application, the reflective mirror layer can be formed by providing a smooth reflective mirror material such as aluminum foil, tin foil, etc. on the inner wall of the purification housing 31.

[0072] The reflective mirror material can be connected to the inner wall of the purification housing 31 by bonding, or by spraying, which is a relatively simple process with relatively low cost.

[0073] The shape of the laser purification device 30 corresponds to the shape of the air duct 13. For example, the cross-section of the air duct of the indoor unit of the duct air conditioner is mostly rectangular, so the purification housing 31 of the laser purification device 30 is a rectangular parallelepiped; the cross-section of the air duct of the fresh air fan is mostly circular, so the purification housing 31 of the laser purification device 30 is a cylindrical shape; large-scale centralized heat exchange air conditioning equipment (such as AHU) has a large internal usable space, so the shape of the laser purification device 30 is not limited, and can be spherical, rectangular or cylindrical.

[0074] For example, refer to Figure 2 The laser purification device 30 is spherical, and the air inlet 311 and the air outlet 312 are arranged at two ends of the same diameter on the sphere. The laser generator 32 is located on one side of the sphere wall between the air inlet 311 and the air outlet 312; in addition, the laser generator 32 can be one, or the number of laser generators 32 can be increased at the opposite position or the side position.

[0075] The laser emitted by the laser generator 32 is continuously reflected in the sphere, so that the exposure time of the air flowing from the air inlet 311 to the air outlet 312 is prolonged.

[0076] For example, refer to Figure 3The laser purification device 30 is cylindrical, and an air inlet 311 and an air outlet 312 are respectively arranged on two circular surfaces of the cylinder. The laser generator 32 is located on the side wall of the cylinder. In addition, the laser generator 32 can be one, or the number of laser generators 32 can be increased at the opposite position or the side position.

[0077] The laser emitted by the laser generator 32 is continuously reflected on the side wall of the cylinder, so that the exposure time of the air flowing from the air inlet 311 to the air outlet 312 is prolonged.

[0078] For example, refer to Figure 4 The laser purification device 30 is in the shape of a cuboid, and an air inlet 311 and an air outlet 312 are respectively arranged on a set of opposite surfaces of the cuboid. Except for the side where the air inlet 311 and the air outlet 312 are located, the other four side surfaces are reflective surfaces, and the laser generator 32 can be arranged on the reflective surface. In addition, the laser generator 32 can be one or more.

[0079] The laser emitted by the laser generator 32 is continuously reflected on the reflection surface, so that the exposure time of the air flowing from the air inlet 311 to the air outlet 312 is prolonged.

[0080] In some embodiments of the present application, reference Figure 5 The inner wall of the purification shell 31 is a concave surface. In this way, after the laser is reflected on the concave surface, the reflected light can be more concentrated in the purification air duct, which is beneficial to improving the laser purification effect and purification efficiency.

[0081] When the purification housing 31 is cylindrical or spherical, its inner wall is directly a concave surface, and its own concave surface can be directly used; when the purification housing 31 is a rectangular parallelepiped, its inner wall can be set as a concave surface.

[0082] In some embodiments of the present application, reference Figure 6 , Figure 7 The inner wall of the purification housing 31 is provided with a plurality of convex portions 314. In this way, when the laser is irradiated onto the convex portions 314, diffuse reflection is easily formed, thereby increasing the irradiation area of ​​the light.

[0083] The convex portions 314 may be arranged at predetermined intervals on the reflecting surface, so that the laser can be irradiated without blind spots inside the purification housing 31 .

[0084] The outer surface of the protrusion 314 is a spherical surface, which can increase the reflection range of light.

[0085] The protrusion 314 and the purification housing 31 can be integrally formed, and the manufacturing process is relatively simple and the cost is relatively low.

[0086] In some embodiments of the present application, reference Figures 8 to 10, the arrows in the figure indicate the air flow path, and the laser purification device 30 also includes an air guide blade 33. The air guide blade 33 is arranged in the purification air duct 313, and extends from the side wall of the purification air duct 313 to the center direction, so that the air guide blade 33 blocks the air, so that the flow direction of the air in the purification air duct 313 is changed, thereby extending the air flow path, and also extending the air flow time in the purification air duct 313, that is, the exposure time is increased, and the air purification rate is improved.

[0087] According to some embodiments of the present application, a plurality of air guide blades 33 are arranged at intervals along the flow direction of the air, so that the flow direction of the air can be changed multiple times, thereby extending the flow path of the air.

[0088] In some embodiments, specific reference is made to Figure 8 , the purification air duct 313 has a first side wall and a second side wall relative to each other; the air guide blade 33 includes a first air guide blade 331 and a second air guide blade 332, the first air guide blade 331 extends from the first side wall toward the center, and the second air guide blade 332 extends from the second side wall toward the center. From the air inlet 311 to the air outlet 312, the first air guide blade 331 and the second air guide blade 332 are arranged alternately. In this way, during the flow of air, the flow direction is changed multiple times by the first air guide blade 31 and the second air guide blade 332 in turn, the flow path is further extended, the exposure time is further increased, and the purification rate is further improved.

[0089] In addition, along the air flow direction, a plurality of first air guide blades 331 are arranged at intervals, and a plurality of second air guide blades 332 are arranged at intervals. The first air guide blades 331 and the second air guide blades 332 form a maze-like path in the purification air duct 313, thereby extending the air flow path.

[0090] In some embodiments, specific reference is made to Fig. 9 The air guide blades 33 are arranged obliquely in the purification air duct 313, and the air guide blades 33 are inclined toward the air outlet 312 from the side wall to the center of the purification air duct 313. In this way, the air guide blades 33 can reduce the wind resistance to the air while extending the air flow path.

[0091] In some embodiments, the air guide blades 33 can be swung. The swing angle of the air guide blades 33 can be used to take into account both the purification rate and the wind resistance.

[0092] For example, when the air guide blade 33 swings to 90°, the air flow path is relatively long and the purification rate is high, but the wind resistance is large. When the air purification rate needs to be improved, the air guide blade 33 can be controlled to swing to this angle (90°); when the air guide blade 33 swings to be nearly parallel to the air flow direction, the wind resistance is minimal, but the flow path is not extended and the purification rate is relatively low. When a higher wind speed is required, the air guide blade 33 can be controlled to swing to a small angle or even 0°.

[0093] The air guide blades 33 are rotatably connected relative to the purification housing 31 , and the plurality of air guide blades 33 are linked via a connecting rod 34 . When the connecting rod 34 moves, the air guide blades 33 swing along with it.

[0094] The first driving member is connected to the connecting rod 34 and is used to drive the connecting rod 34 to move. Fig.10 The first driving member can be a motor and a gear rack structure. The connecting rod 34 is provided with a rack 341, and the rack 341 is meshed with the gear 352. When the motor 351 drives the gear 352 to rotate, the gear 352 drives the rack 341 to move, thereby realizing the movement of the connecting rod 34.

[0095] In other embodiments, the first driving member may also be a cylinder, an electric push cylinder or a hydraulic cylinder with a telescopic rod, etc. The telescopic rod is connected to the connecting rod 34, and the movement of the connecting rod 34 is achieved by the extension and retraction of the telescopic rod.

[0096] According to an embodiment of the present application, the laser purification device 30 further includes a fixing rod 36, which is fixedly connected to the inner wall of the purification air duct 313, and a mounting hole is provided on the fixing rod 36, and a rotating shaft 333 on the air guide blade 33 is adapted in the mounting hole. When the connecting rod 34 drives the air guide blade 33 to move, the rotating shaft 333 rotates relative to the fixing rod 36.

[0097] The movement distance of the connecting rod 34 can control the swing angle of the air guide blade 33 .

[0098] In some embodiments of the present application, the different swing angles of the air guide blades 33 will affect the purification efficiency of the laser purification device 30. Therefore, according to the different purification efficiencies, the air purification device can have multiple purification modes, such as general purification mode, strong purification mode, etc.

[0099] The controller can control the air guide blade 33 to swing to a corresponding angle according to different purification modes. For example, in the general purification mode, the air guide blade 33 swings to a preset angle α, and in the strong purification mode, the air guide blade 33 swings to a preset angle β. The swing angle is the angle between the air guide blade 33 and the extension direction of the purification air duct 313, and α is less than β. The air guide blade 33 has a better effect of extending the air flow path at a larger swing angle, and the purification efficiency is higher.

[0100] In addition, different wind speeds can be set in different purification modes. The controller controls the wind speed of the fan 30 according to different purification modes. For example, the fan corresponds to wind speed a in strong purification mode, wind speed b in general purification mode, and wind speed c in normal mode. a≤b<c, the smaller the wind speed, the slower the air flow rate in the purification air duct, the longer the exposure time, and the higher the purification rate; in other words, when the user chooses the strong purification mode, it means that the user cares more about the air purification effect, and the wind speed is lower at this time, which can give priority to the purification requirements; when the user chooses the normal mode, it means that the user cares more about the basic performance, and the wind speed is higher at this time, which can give priority to the user's demand for basic performance.

[0101] The working mode, the swing angle of the air guide blade 33, and the wind speed are stored in the memory in a one-to-one corresponding table form. After the controller receives the working mode selected by the user, it controls the air guide blade 33 to swing to the corresponding angle according to the table, and controls the fan 30 to operate at the corresponding wind speed.

[0102] Different degrees of purification modes make the air treatment device more intelligent and meet the purification needs under different air pollution levels.

[0103] In some embodiments, the swing angle of the air guide blades can also be controlled in conjunction with the air volume, that is, the controller is used to adjust the air guide blades to a corresponding angle according to the wind speed selected by the user.

[0104] Specifically, when the controller receives a user selection of a high wind speed, the wind guide blade is adjusted to swing to a preset angle α1; when the controller receives a user selection of a low wind speed, the wind guide blade is adjusted to swing to an angle β1, where α1 is less than β1. At a high wind speed, the wind guide blade has a small swing angle, which reduces the wind guide blade's obstruction to the wind, giving priority to satisfying the user's demand for high air volume; at a low wind speed, the wind guide blade has a large swing angle, which increases the wind guide blade's obstruction to the wind, prolongs the air flow path, and thus prolongs the exposure time. The user's low wind speed indicates that the demand for basic performance is not high, and purification can be given priority at this time.

[0105] In some embodiments, for the convenience of description, the air inlet 311 and the air outlet 312 are both referred to as air outlets.

[0106] Reference Figures 11 to 13 The laser purification device 30 may include a light shielding plate 37, which is arranged at the air outlet to block the laser and prevent the laser from leaking.

[0107] In one example, the position of the laser generator 32 in the purification air duct 313 can be determined first, and then the reflection path of the laser in the purification air duct 313 can be calculated according to the reflection law of the laser, so that the external emission range of the laser at the air outlet can be known, and a light baffle 37 is set corresponding to this external emission range to block the laser and prevent the laser from leaking out.

[0108] In another example, the minimum air volume performance requirement of the product can be confirmed first, and the shielding area of ​​the light shielding plate 37 on the purification air duct 313 can be confirmed through the minimum air volume, and then the position range of the light shielding plate 37 is used as a point on the laser reflection path to reversely infer the position of the laser generator 32 on the purification air duct 313. This method can ensure that the laser does not leak while also meeting the minimum air volume requirement.

[0109] According to an embodiment of the present application, the light blocking plate 37 can move between a blocking position and an open position, in which the air outlet is partially blocked, and in which the air outlet is fully opened.

[0110] When the laser generator 32 is working, the light shielding plate 37 is in the shielding position ( Fig.11 ), blocking the laser from leaking out; when the laser generator is not working, the light shielding plate 37 is in the open position ( Fig.12 , Fig.13 ) to avoid affecting the wind speed.

[0111] In some embodiments, the light barrier 37 is movable between the blocking position and the open position in a translationally movable manner.

[0112] When the light shielding plate 37 moves toward the direction approaching the air outlet, the air outlet is blocked, and when the light shielding plate 37 moves away from the air outlet, the air outlet is opened.

[0113] The movement of the light blocking plate 37 is achieved by driving the second driving member. The second driving member has the same structure as the first driving member, and will not be described in detail here.

[0114] The light shielding plate 37 specifically includes an air inlet light shielding plate 371 disposed at the air inlet 311 , and an air outlet light shielding plate 372 disposed at the air outlet 312 .

[0115] For example Fig.11 When the air inlet light shielding plate 371 moves upward, it blocks the lower part of the air inlet 311, and when the air outlet light shielding plate 372 moves downward, it blocks the upper part of the air outlet 312; Fig.12 When the air inlet light shielding plate 371 moves downward, the air inlet 311 is opened, and when the air outlet light shielding plate 372 moves upward, the air outlet 312 is opened.

[0116] In some embodiments, specific reference is made to Fig.13The light blocking plate 37 can be rotatably moved between the blocking position and the open position.

[0117] When the light shielding plate 37 rotates to the air outlet, it can partially block the air outlet. When the light shielding plate 37 rotates in a direction away from the air outlet, the air outlet is fully opened.

[0118] Reference Fig.14 The rotation of the light shielding plate 37 can be achieved by driving a driving motor 38. The motor shaft of the driving motor 38 is connected to the light shielding plate 37. The rotation of the driving motor 38 drives the light shielding plate 37 to rotate.

[0119] Exemplarily, when the light baffle 37 rotates to be parallel to the air flow direction, it does not block the air outlet and is in an open position; when the light baffle 37 rotates to be perpendicular to the air flow direction at the air outlet, it blocks part of the air outlet and is in a blocking position.

[0120] According to an embodiment of the present application, when the light baffle 37 is in the open position, it is located in the purification air duct 313, which can reduce the space occupied by the light baffle 37 and make the product structure more compact.

[0121] In some embodiments of the present application, the laser purification device 30 may further include an air quality sensor.

[0122] With reference to the flow path of air, the air quality sensor is disposed upstream of the air inlet 311 or at the air inlet 311 .

[0123] Taking the laser purification device disposed in the air duct as an example, the air quality sensor can be disposed at the inlet 11, or between the inlet 11 and the air inlet 311, for detecting the air quality a of the incoming air.

[0124] The controller is used to control the laser generator 32 to be turned on intermittently, and to control the switching duration of the laser generator according to the air quality a.

[0125] Since the laser generator 32 has a service life, the intermittent opening of the laser generator 32 in the present application can extend the service life of the laser generator 32 and meet the service life requirement of the whole machine application.

[0126] Moreover, intermittent opening is also beneficial to the heat dissipation of the laser generator, ensuring the normal performance of the product and extending the life of the laser generator.

[0127] In addition, intermittent opening can also reduce power consumption and has the advantage of energy saving.

[0128] In some embodiments, a laser generator 32 is provided in the laser cleaning device 30. The laser generator 32 is turned on each time T ON duration, then turn off T OFF Duration;

[0129] When a<a1, the laser generator is controlled to shut down; under this condition, it means that the air quality is relatively good and no purification is required, so the laser generator is turned off.

[0130] When a1≤a<a2, the energy-saving purification mode is entered, and the on-time and off-time of the laser generator meet the following conditions: T ON <T OFF ; For example, you can set n1×T ON =T OFF , where n1>1; under this condition, it means that the air pollution is relatively light, and a shorter opening time can meet the demand for air purification. Therefore, the opening time of the laser generator is T ON Less than its shutdown time T OFF .

[0131] When a2≤a<a3, the system enters the general purification mode, and the on-time and off-time of the laser generator meet the following conditions: T ON =T OFF ; Under this condition, it means that the air pollution level is relatively moderate, and the laser generator is turned on for a time equal to the time it is turned off, which can meet the air purification needs.

[0132] When a≥a3, enter the strong purification mode, the laser generator on time and off time meet: T ON >T OFF ; For example, you can set T ON =n2T OFF , where n2>1; under this condition, it means that the air pollution is serious and the laser generator needs to be turned on for a long time to achieve a better purification effect. Therefore, the power-on time is T ON Greater than shutdown time T OFF .

[0133] Among them, T ON , a1, a2, a3, n1, n2 are preset values, and a1<a2<a3.

[0134] In the above description, T ON , T OFF is a variable parameter. In different purification modes, T ON , T OFF Can be assigned different preset values.

[0135] In some embodiments, two or more laser generators are provided in the laser purification device 30, and different laser generators can work in rotation.

[0136] A laser generator is turned on and off once for one cycle, and multiple laser generators work in rotation according to the cycle.

[0137] For example, there are m laser generators, where m is an integer not less than 2, and they are denoted by Q1, Q2, ..., Q m Indicates. In the first cycle, Q1 acts, Q2, ... Q m Shut down, Q2 takes effect in the second cycle, Q1, Q3, ... Q m Shut down, and so on, until the cycle returns to Q1.

[0138] Reference Fig.15 , Fig.16 , taking m = 2 as an example, in energy-saving purification mode or general purification mode, in the first cycle, Q1 turns on T ON1 , close T OFF1 , and then rotate to Q2 for the second cycle, Q2 turns on T ON2 , close T OFF2 ; Then it rotates to Q1 for the third cycle, and the cycle continues; during the cycle of Q1, Q2 is always turned off, and during the cycle of Q2, Q1 is always turned off.

[0139] In addition, since the air pollution is relatively light in energy-saving purification mode, you can set T ON <T OFF For example, 2T ON1 =T OFF1 , 2T ON2 =T OFF2 .

[0140] In general purification mode, you can set T ON =T OFF , that is, T ON1 =T OFF1 , T ON2 =T OFF2 .

[0141] In some embodiments, two or more laser generators are provided in the laser purification device 30, and different laser generators can work in rotation.

[0142] Q1 turns on T ON Then switch to Q2 and turn on T ON , and so on, until Q m Turn on T ON When one laser generator is turned on, the other laser generators are turned off.

[0143] This situation can be applied to the strong purification mode, where the laser generator is always turned on during the entire purification process.

[0144] Reference Fig.17, taking m=2 as an example, in the strong purification mode, Q1 turns on T ON1 After that, Q2 is turned on at the same time as it is turned off; Q2 turns on T ON2 After that, Q1 is turned on while Q2 is turned off. ON =T OFF .

[0145] In some embodiments, the laser purification device further includes a human sensor for detecting the presence of a person; when it is detected that a person is approaching, the laser generator is controlled to shut down, thereby providing safety protection.

[0146] In some embodiments, reference Figures 18 to 20 The air treatment device further includes a high-voltage static power source 40, which is electrically connected to the purification housing 31. The high-voltage static power source may be a high-voltage static generator.

[0147] The high-voltage electrostatic power source applies high-voltage static electricity to the purification shell 31. The high-voltage static electricity will form an electric field inside the laser purification device 30. When the laser generator 32 is working, it will stimulate air ions inside the laser purification device 30. The air ions will charge the particulate matter in the air flowing through, and the microorganisms will be killed by the electric breakdown effect. Under the action of the electric field force, microorganisms and dust are easily attached to the inner wall, thereby achieving the effect of sterilization and dust removal, and improving the air purification rate.

[0148] According to some embodiments of the present application, the exterior of the purification housing 31 is made of conductive material, and the high-voltage static power source 40 is electrically connected to the exterior of the purification housing 31 .

[0149] Alternatively, the inner wall of the purification housing 31 is made of conductive material, and the high-voltage static power source 40 is electrically connected to the inner wall of the purification housing 31 .

[0150] In some embodiments, the high-voltage static electricity source releases positive high-voltage static electricity, that is, the purification housing 31 is passed positive high-voltage static electricity, which can be used to adsorb negatively charged particles.

[0151] Normally, when the air produces ions through external stimulation, the number of negative ions is greater than the positive ions, and a better purification effect can be achieved by only adsorbing negatively charged particles.

[0152] In some embodiments, the high-voltage static electricity source releases negative high-voltage static electricity, that is, the purification housing 31 is passed negative high-voltage static electricity, which can be used to adsorb positive ions in the air.

[0153] When the pollutants in the indoor air are small, the high-voltage electrostatic power source is controlled to turn on. After the negative high-voltage electrostatic adsorption of positive ions, more negative ions can be retained in the air, and negative ions are beneficial to human health.

[0154] In some embodiments, the purification housing 31 may include a first housing portion 315, a second housing portion 316 and an intermediate housing portion 317. The intermediate housing portion 317 is located between the first housing portion 315 and the second housing portion 316, and the intermediate housing portion 317 is made of insulating material, so that the first housing portion 315 and the second housing portion 316 can be separated as two conductors.

[0155] The high-voltage static electricity source 40 includes a positive high-voltage static electricity source 41 and a negative high-voltage static electricity source 42. The positive high-voltage static electricity source 41 provides positive high-voltage static electricity, and the negative high-voltage static electricity source 42 provides negative high-voltage static electricity.

[0156] The positive high-voltage static electricity source 41 is electrically connected to the first shell 315, and the negative high-voltage static electricity source 42 is electrically connected to the second shell 316. That is, a part of the purification shell 31 is passed through positive high-voltage static electricity, and a part is passed through negative high-voltage static electricity, which can be used to adsorb all particles with positive and negative charges.

[0157] In some embodiments, the first shell 315 is electrically connected to the high-voltage electrostatic source 40, and the second shell 316 is grounded. The high-voltage electrostatic source 40 provides positive high-voltage static electricity, that is, a portion of the purification shell 31 is connected to positive high-voltage static electricity, and a portion is grounded. The positive high voltage is used to adsorb negatively charged particles, and at the same time, the positive high voltage repels positively charged particles, so that they are adsorbed on the grounded side, thereby achieving simultaneous purification of positively and negatively charged particles. Only one high-voltage electrostatic source 40 is used to achieve the simultaneous adsorption of positively and negatively charged particles, which reduces costs and simplifies the design compared to the two high-voltage electrostatic sources in the above-mentioned embodiments.

[0158] In some embodiments, the first shell 315 is electrically connected to the high-voltage electrostatic source 40, and the second shell 316 is grounded. The high-voltage electrostatic source 40 provides negative high-voltage static electricity, that is, a portion of the purification shell 31 is connected to negative high-voltage static electricity, and a portion is grounded. The negative high voltage is used to adsorb positively charged particles, and at the same time, the negative high voltage repels negatively charged particles, so that they are adsorbed on the grounded side, thereby achieving simultaneous purification of positively and negatively charged particles. Only one high-voltage electrostatic source 40 is used to achieve the simultaneous adsorption of positively and negatively charged particles, which reduces costs and simplifies the design compared to the two high-voltage electrostatic sources in the above-mentioned embodiments.

[0159] The first concept of the present application is to provide a laser purification device 30 and utilize the rapid sterilization capability of laser to achieve better purification effect and purification efficiency.

[0160] The second concept of the present application is that in the laser purification device 30, since the inner wall of the purification shell 31 is set to a mirror surface, the principle of mirror reflection can be used to increase the radiation range of the laser in the purification air duct 313 to ensure that the flowing air can be purified.

[0161] The third concept of the present application is that since the inner wall of the purification shell 31 is a concave surface, after the laser is reflected on the concave surface, the reflected light can be more concentrated in the purification air duct, which is beneficial to improving the laser purification effect and purification efficiency.

[0162] According to a fourth concept of the present application, since the inner wall of the purification housing 31 has a plurality of protrusions 314 , when the laser is irradiated onto the protrusions 314 , diffuse reflection is easily formed, thereby increasing the light irradiation area and improving the purification rate.

[0163] The fifth concept of the present application is to provide an air guide blade 33 in the purification air duct. The air guide blade 33 blocks the air, causing the flow direction of the air in the purification air duct 313 to change, thereby extending the flow path of the air, and also extending the flow time of the air in the purification air duct 313, that is, the exposure time is increased, thereby improving the air purification rate.

[0164] The sixth conception of the present application is that since the air guide blades 33 are arranged at an angle in the purification air duct 313, the inclined arrangement can reduce the wind resistance to the air while extending the air flow path.

[0165] The seventh conception of the present application is that since the air guide blades 33 are swingingly arranged, the requirements of both purification rate and wind resistance can be taken into account by changing the swing angle of the air guide blades 33.

[0166] The eighth conception of the present application is that since the air guide blades 33 can be swingably arranged, different purification rates can be achieved by changing the swing angle of the air guide blades 33, that is, they can correspond to different purification modes to meet the purification needs of different environments, which is more intelligent.

[0167] According to an eighth concept of the present application, a light shielding plate 37 is provided at the air outlet of the purification air duct to prevent the laser in the purification air duct from leaking out.

[0168] The ninth concept of the present application is that since the light baffle 37 is movable, when the laser generator 32 is working, the light baffle 37 is in a shielding position to prevent the laser from leaking out; when the laser generator is not working, the light baffle 37 is in an open position to prevent it from affecting the wind speed.

[0169] The tenth concept of the present application is that since the laser generator 32 is turned on intermittently, the service life of the laser generator 32 can be extended to meet the service life requirement of the whole machine application.

[0170] The eleventh concept of the present application is that since the laser generator 32 is turned on intermittently, it is beneficial to the heat dissipation of the laser generator, ensuring the normal performance of the product and extending the life of the laser generator.

[0171] The twelfth concept of the present application is that since the laser generator 32 is turned on intermittently, power consumption can be reduced, which has the advantage of energy saving.

[0172] The thirteenth concept of the present application is that since the high-voltage static electricity source 40 is connected to the purification shell 31, the high-voltage static electricity forms an electric field in the laser purification device 30, and the high-voltage static electricity adsorbs charged particles, thereby improving the purification rate of the air.

[0173] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0174] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air treatment device, characterized in that: Including: A laser purification device for purifying air; the laser purification device includes: A purification housing on which an air inlet and an air outlet are formed, and a purification air duct connecting the air inlet and the air outlet, and a mirror surface layer is provided on the inner wall of the purification housing; A laser generator connected inside the purification housing, the laser generator emits laser into the purification air duct, and the laser is reflected multiple times on the mirror surface layer to sterilize the air in the purification air duct; An air quality sensor, with the air flow path as a reference, is provided at the air inlet or upstream of the air inlet for detecting the air quality a; A controller for controlling the laser generator to be intermittently turned on and controlling the on-off duration of the laser generator according to the air quality a; The laser purification device further includes: Air guide vanes swingably connected inside the purification air duct, and a plurality of air guide vanes are linked by a connecting rod. When the connecting rod moves, the air guide vanes swing together; The controller is used for: obtaining the swing angle of the air guide vanes according to the selected working mode by the user and a preset data table, and controlling the air guide vanes to swing to the corresponding angle; wherein, the data table contains corresponding data of the swing angles of the air guide vanes in different working modes; In the general purification mode, the air guide vanes swing to a preset angle α, and in the strong purification mode, the air guide vanes swing to a preset angle β; the swing angle is the included angle between the air guide vane and the extending direction of the purification air duct, and α is less than β.

2. The air treatment device according to claim 1, characterized in that: The laser generator is turned on every T 0N duration, then turn off T OFF Duration; When a < a1, control the laser generator to shut down; When a1 ≤ a < a2, enter the energy-saving purification mode, and the switching duration of the laser generator satisfies: T ON <T OFF ; When a2 ≤ a < a3, enter the general purification mode, and the switching duration of the laser generator satisfies: T ON = T OFF ; When a≥a3, enter the strong purification mode, and the switching time of the laser generator satisfies: T ON >T OFF ; Among them, T ON , T OFF , a1, a2, a3 are preset values, and a1 <a2<a3。 3. The air treatment device according to claim 1, characterized in that: There are multiple laser generators; The laser generator is turned on T ON Once, close T OFF One time is one cycle, and the plurality of laser generators work in rotation according to the cycle.

4. The air treatment device according to claim 3, wherein When a1 ≤ a < a2, enter the energy-saving purification mode; when a2 ≤ a < a3, enter the general purification mode; In one cycle, in energy-saving purification mode, n1×T ON =T OFF ; In general purification mode, T ON =T OFF ; Among them, T ON 、T OFF is the preset value, and n1>1.

5. The air treatment device according to claim 1, characterized in that: The laser generators include m, which are respectively denoted as Q1, Q2, ..., Q m ; m laser generators work in rotation: Q1 turns on T ON After that, when shutting down, Q2 is switched to turn on T ON , and so on, until Q m Turn on T ON Finally, it returns to the Q1 cycle while shutting down.

6. The air treatment device according to claim 1, characterized in that: It further includes: A human presence sensor provided on the laser purification device for detecting the approach of a person; The controller is used for: controlling the laser generator to shut down when detecting the approach of a person.

7. The air treatment device according to claim 1, characterized in that: The mirror surface layer is aluminum foil or tin foil, or the mirror surface layer is made of a metal material or glass.

8. The air treatment device according to claim 1, characterized in that: Including: A housing; A fan provided inside the housing for driving air flow; The controller is further used for obtaining the wind speed of the fan according to the selected working mode by the user and a preset data table, and controlling the fan to operate at the corresponding wind speed; Wherein, the data table contains corresponding data of the wind speeds of the fan in different working modes.

9. The air treatment device according to claim 1, wherein The controller is used for: obtaining the swing angle of the air guide vanes according to the selected wind speed and a preset data table, and controlling the air guide vanes to swing to the corresponding angle; Wherein, the data table contains corresponding data of the swing angles of the air guide vanes in different wind speeds.

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