An air flow field-based photocatalytic air purification device and a catalytic module

Abstract

The application relates to the technical field of air purification, in particular to a photocatalytic air purification device based on an air flow field and a catalytic module, a main assembly, which comprises an outer shell, an air inlet arranged on the outer wall of the outer shell, an air outlet and an air frame arranged on the inner wall of the outer shell; an adjusting assembly, which comprises a fan and a mounting shell mounted in the inner part of the outer shell, and the inner part of the mounting shell is provided with a moving part; the dust degree in a space is detected through a laser dust sensor; when the dust degree is high, the rotating speed of the fan is fast, the moving part is driven to drive a guide plate to reciprocate in the air frame, the air direction of the fan is changed, air is uniformly introduced into the inner part of the purification device, the problem that the use efficiency of a photocatalyst is low due to single air direction is avoided, the overall use rate of the photocatalyst is improved, meanwhile, the adjusting part is driven by the moving part, the position of the photocatalyst in the inner part of the purification device can be changed, the passing time of air in the photocatalyst layer is changed, and the dust adsorption and decomposition efficiency of other pollutants are improved.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, and in particular to a photocatalytic air purification device and catalytic module based on air flow field. Background Technology

[0002] With the continuous development of industry, more and more pollutants are being emitted into the atmosphere, causing air pollution. Air quality is closely related to human health, and more and more experts are participating in research to improve air quality. Various air purification devices have been developed to improve the air environment and enhance people's quality of life.

[0003] Chinese patent application CN105289290A discloses a box-type photocatalytic air purification device, comprising an air purification device shell, a mesh plate, and a filter adsorption layer; characterized in that the air purification device shell has mesh plates at both ends, and the filter adsorption layer is attached to the front of the mesh plates; the air purification device shell has a front cover at the front end; the front cover has an air inlet in the middle, and a fan is installed in the air inlet; a cross-shaped photocatalytic plate is installed inside the air purification device shell; and ultraviolet lamps are installed at the four apex corners inside the air purification device.

[0004] However, the application still has some problems: when the device is in use, it cannot adjust the wind force according to the dust level in the air, and the airflow generated by the fan is fixed in contact with the catalyst, resulting in low utilization efficiency of some catalysts. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a photocatalytic air purification device based on air flow field, which includes a main component, including a shell, an air inlet and an air outlet disposed on the outer wall of the shell, and a wind frame disposed on the inner wall of the shell; The adjustment component includes a fan and a mounting housing installed inside the housing. A moving part is provided inside the mounting housing. The moving part is connected to and driven by the fan. The fan is affected by the monitoring data of the laser dust sensor inside the housing and adjusts its speed accordingly. When the monitoring data is normal, the fan rotates normally and the moving parts do not move. When the monitoring data is abnormal, the fan speed is increased. At this time, the moving parts are driven by the fan to move inside the mounting shell. When the moving parts move, they drive the guide plate inside the fan frame to move, changing the direction of the airflow generated by the fan. At the same time, the adjustment parts located inside the shell are driven by the moving parts to change the purification channel of the airflow inside the shell.

[0007] As a preferred embodiment of the photocatalytic air purification device based on airflow field according to the present invention, the moving component includes a worm gear, which meshes with a worm at the fan shaft and rotates synchronously with the fan. A transmission shaft is provided at the worm gear shaft and a transmission plate is provided at the end of the transmission shaft. Movable rods are arranged in an array on the end face of the transmission plate. A first elastic element is connected to the end of the movable rod and the other end of the first elastic element is fixed to the end face of the transmission plate and pulls the movable rod inward.

[0008] As a preferred embodiment of the photocatalytic air purification device based on air flow field according to the present invention, wherein: the outer wall of the transmission plate is provided with a transmission ring and the inner wall of the transmission ring is arrayed with slots, the transmission plate rotates inside the transmission ring and the end of the movable rod engages into the slot and drives the transmission ring to rotate.

[0009] As a preferred embodiment of the photocatalytic air purification device based on air flow field described in this invention, wherein: a fixed shell is provided inside the mounting shell, an output gear is provided at the end of the fixed shell and the output gear meshes with the transmission gear on the outer wall of the transmission ring, and the output gear rotates synchronously with the transmission ring.

[0010] As a preferred embodiment of the photocatalytic air purification device based on airflow field according to the present invention, wherein: the output gear end is provided with an output shaft and the end of the output shaft extends into the interior of the fixed shell and is connected to a movable column; the fixed shell is also provided with a cylinder and the end of the cylinder is provided with a straight rod; the end of the straight rod is provided with a sliding column; the end of the sliding column extends into the inner wall of the curved groove opened on the outer wall of the movable column and slides therewith; the cylinder reciprocates inside the fixed shell when it rotates on the surface of the movable column via the sliding column.

[0011] As a preferred embodiment of the photocatalytic air purification device based on air flow field described in this invention, the cylindrical end is connected to a hinge plate, the outer wall of the hinge plate is hinged to the guide plates arrayed on the inner wall of the air frame, and the guide plates are reciprocated by the hinge plate inside the air frame and change the direction of the airflow blown by the fan towards the air frame.

[0012] As a preferred embodiment of the photocatalytic air purification device based on air flow field according to the present invention, the adjusting component includes a rack and the rack meshes with an output gear, a connecting column is provided on the outer wall of the rack and a third elastic element is sleeved on the outer wall of the connecting column, and a movable tooth is movably provided at the other end of the connecting column.

[0013] As a preferred embodiment of the photocatalytic air purification device based on air flow field according to the present invention, wherein: the other end of the rack is connected to a first connecting rod and the other end of the first connecting rod is connected to a second connecting rod, the end of the second connecting rod is connected to a first connecting plate at the end of the first connecting rod, and moves along the arc-shaped groove opened on the end face of the first connecting plate.

[0014] As a preferred embodiment of the photocatalytic air purification device based on air flow field described in this invention, the other end of the second connecting rod is connected to a second connecting plate and the end face of the second connecting plate is provided with an inclined groove. The movement of the second connecting rod on the surface of the first connecting plate drives the second connecting plate to move. A third connecting rod is also provided at the end of the second connecting plate.

[0015] A catalytic module is used in the above-described photocatalytic air purification device based on airflow field, wherein: the purification component includes the catalytic module, the end of the catalytic module is snapped with a plate and the end of the plate is provided with an adjustment gear; The catalytic module is provided with an elliptical plate at its end, and the inner wall of the elliptical plate is provided with moving teeth, while the outer wall of the elliptical plate is provided with a push rod.

[0016] The beneficial effects of this invention are as follows: This invention uses a laser dust sensor to detect the dust level in the space. When the dust level is high, the fan speed increases, driving the moving parts to move the guide plate back and forth within the air frame, changing the direction of the airflow. This causes the air to circulate up and down as it passes through the air frame, allowing the air to enter the purification device evenly and come into uniform contact with the photocatalyst. This avoids the problem of low photocatalyst utilization efficiency caused by a single airflow direction, thus improving the overall utilization rate of the photocatalyst. At the same time, the adjusting parts, driven by the moving parts, can change the position of the photocatalyst inside the purification device, thereby changing the time that air passes through the photocatalyst layer, increasing the contact time between air and the photocatalyst, and improving the efficiency of dust adsorption and decomposition of other pollutants. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a photocatalytic air purification device and catalytic module based on an air flow field according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the outer shell in this invention; Figure 3 This is a schematic diagram of the internal structure of the fixed shell in this invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the moving parts in this invention; Figure 6 This is a schematic diagram of the internal structure of the wind frame in this invention; Figure 7 This is a schematic diagram showing the connection relationship between the second link and the third link in this invention; Figure 8 This is a schematic diagram of the purification component in this invention; Figure 9 This is a schematic diagram showing the changes in the arrangement of the catalytic modules in this invention.

[0019] Reference numerals: 100, main component; 101, outer casing; 102, air inlet; 103, air outlet; 104, air frame; 1041, air deflector; 200. Adjustment assembly; 201. Fan; 2011. Worm gear; 202. Mounting housing; 203. Worm wheel; 2031. Drive shaft; 2032. Drive plate; 2033. Movable rod; 2034. First elastic element; 204. Drive ring; 2041. Slot; 2042. Drive gear; 205. Fixed housing; 206. Output gear; 2061. Output shaft; 2062. Movable column; 2063. Curved groove; 2064. Cylindrical column; 2065. Straight rod; 2066. Sliding column ; 2067, Second elastic element; 2068, Hinge plate; 207, Rack; 2071, Connecting column; 2072, Third elastic element; 2073, Movable tooth; 2074, First connecting rod; 2075, First connecting plate; 2076, Arc groove; 208, Second connecting rod; 209, Second connecting plate; 2091, Inclined groove; 2092, Third connecting rod; 2093, Ramp; 301, Elliptical plate; 302, Movable tooth; 303, Push rod; 304, Insert rod; 305, Fourth elastic element; 400. Purification component; 401. Catalytic module; 402. Card plate; 403. Adjustment gear. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0023] Example 1

[0024] This is the first embodiment of the present invention, which provides a photocatalytic air purification device based on an air flow field.

[0025] Specifically, refer to Figure 1 , Figure 2 A photocatalytic air purification device based on air flow field includes a main component 100, including a shell 101, an air inlet 102 and an air outlet 103 disposed on the outer wall of the shell 101, and a wind frame 104 disposed on the inner wall of the shell 101. The adjustment component 200 includes a fan 201 and a mounting shell 202 installed inside the housing 101. The mounting shell 202 has a moving part inside, which is connected to and driven by the fan 201. The fan 201 is affected by the monitoring data of the laser dust sensor inside the housing 101 and adjusts its speed accordingly. When the monitoring data is normal, the fan 201 rotates normally and the moving parts do not move. When the monitoring data is abnormal, the fan 201 speed is increased. At this time, the moving parts are driven by the fan 201 to move inside the mounting shell 202. When the moving parts move, they drive the guide plate 1041 inside the air frame 104 to move, changing the direction of the wind force generated by the fan 201. At the same time, the adjustment parts located inside the shell 101 are driven by the moving parts to change the purification channel of the air circulation inside the shell 101.

[0026] The fan 201 is located at the air inlet 102. The rotation of the fan 201 blows the air in the space into the purification device. Multiple baffles 1041 are installed inside the air frame 104. The baffles 1041 control the direction of the air blown by the fan 201 into the purification device. Finally, the purified air is blown out through the air outlet 103.

[0027] The fan 201 rotates at a speed affected by the data detected by the laser dust sensor. When the dust level in the space is low, the fan 201 rotates at a slower speed and blows less air into the purification device. At the same time, the guide plate 1041 does not move, and the airflow generated by the fan 201 does not change direction. The airflow is directly blown into the purification device and discharged through the air outlet 103.

[0028] When a high level of dust is detected in the space, the fan 201 speed increases. The moving parts inside the mounting housing 202 are affected by the rotation of the fan 201 and move. The moving parts are directly connected to the guide plate 1041 inside the fan frame 104 and change the state of the guide plate 1041, so that the guide plate 1041 moves back and forth inside the fan frame 104 and changes the direction of the wind blown by the fan 201.

[0029] When the air generated by the fan 201 passes through the guide plate 1041, it is affected by the guide plate 1041 and blows up and down in a circular motion as it passes through the air frame 104, so that the air enters the interior of the purification device evenly, allowing the air to come into uniform contact with the photocatalyst. By changing the air direction, the overall utilization rate of the photocatalyst is improved.

[0030] At the same time, the adjusting component is driven by the moving component, which changes the position of the photocatalyst inside the purification device. By changing the position of the photocatalyst, the time it takes for air to pass through the photocatalyst layer is changed, thereby improving the efficiency of dust adsorption and decomposition of other pollutants.

[0031] Example 2

[0032] This is the second embodiment of the present invention, which is implemented based on the previous embodiment.

[0033] Specifically, refer to Figures 3-5 The moving parts include a worm gear 203, which meshes with a worm 2011 at the shaft of the fan 201 and rotates synchronously with the fan 201. A transmission shaft 2031 is provided at the shaft of the worm gear 203, and a transmission plate 2032 is provided at the end of the transmission shaft 2031. Movable rods 2033 are arranged in an array on the end face of the transmission plate 2032. A first elastic element 2034 is connected to the end of the movable rod 2033, and the other end of the first elastic element 2034 is fixed to the end face of the transmission plate 2032 and pulls the movable rod 2033 inward.

[0034] In this system, the worm gear 2011 at the shaft of the fan 201 drives the worm wheel 203 to rotate inside the mounting housing 202. The transmission shaft 2031 at the shaft of the worm wheel 203 rotates synchronously with the worm gear 2011. When the fan 201 rotates slowly, the worm gear 2011 rotates slowly, and the synchronously rotating transmission shaft 2031 drives the transmission plate 2032 to rotate. The movable rod 2033 on the surface of the transmission plate 2032 is pulled by the first elastic element 2034, and the end of the movable rod 2033 moves towards the transmission shaft 2031.

[0035] When the fan 201 rotates at a high speed, the rotation speed of the drive shaft 2031 increases synchronously. As the drive plate 2032 rotates, the movable rod 2033 is affected by centrifugal force, and the end of the movable rod 2033 moves outward.

[0036] Preferred, refer to Figure 5 The outer wall of the transmission plate 2032 is provided with a transmission ring 204 and the inner wall of the transmission ring 204 is provided with slots 2041. The transmission plate 2032 rotates inside the transmission ring 204 and the end of the movable rod 2033 engages in the slot 2041 and drives the transmission ring 204 to rotate.

[0037] The transmission plate 2032 is located inside the transmission ring 204 but is not connected to the transmission ring 204. The transmission plate 2032 moves outward through the movable rod 2033 on its surface and engages with the slot 2041 on the surface of the transmission ring 204. The transmission ring 204 then rotates together with the transmission plate 2032.

[0038] The mounting housing 202 has a fixed housing 205 inside. The fixed housing 205 has an output gear 206 at its end, and the output gear 206 meshes with the transmission gear 2042 on the outer wall of the transmission ring 204. The output gear 206 rotates synchronously with the transmission ring 204.

[0039] The transmission gear 2042 is fixed on the lower surface of the transmission ring 204 and rotates together with the transmission ring 204. The transmission gear 2042 meshes with the output gear 206. The output gear 206 is relatively large, and its rotational speed is much slower than that of the transmission gear 2042.

[0040] Reference Figure 3 , Figure 4 The output gear 206 has an output shaft 2061 at its end, and the end of the output shaft 2061 extends into the interior of the fixed housing 205 and is connected to a movable column 2062. The fixed housing 205 also has a cylinder 2064 inside, and a straight rod 2065 at its end. The straight rod 2065 has a sliding column 2066 at its end. The end of the sliding column 2066 extends into the inner wall of the curved groove 2063 opened on the outer wall of the movable column 2062 and slides with it. The cylinder 2064 moves back and forth inside the fixed housing 205 when it rotates on the surface of the movable column 2062 via the sliding column 2066.

[0041] The fixed housing 205 is fixed inside the mounting housing 202. The output gear 206 is connected to the internal movable column 2062 via the output shaft 2061. When the output gear 206 rotates, the movable column 2062 inside the fixed housing 205 rotates together. At the same time, the cylinder 2064 is restricted by the limiting groove on the surface of the cylinder 2064, so that the cylinder 2064 cannot rotate. The sliding column 2066 slides in the curved groove 2063 on the surface of the movable column 2062, so that the cylinder 2064 moves up and down reciprocally inside the fixed housing 205.

[0042] Furthermore, the surface of the cylinder 2064 is provided with a second elastic element 2067. When the movable rod 2033 is not engaged with the slot 2041, the cylinder 2064 is pushed downwards towards the fixed shell 205 by the second elastic element 2067.

[0043] Preferably, a hinge plate 2068 is connected to the end of the cylinder 2064. The outer wall of the hinge plate 2068 is hinged to the guide plates 1041 arrayed on the inner wall of the wind frame 104. The guide plates 1041 are reciprocated inside the wind frame 104 by the hinge plate 2068 and change the direction of the wind blown by the fan 201 towards the wind frame 104.

[0044] The hinge plate 2068 is connected to the bottom of the cylinder 2064. As the cylinder 2064 moves up and down inside the fixed shell 205, the hinge plate 2068 moves up and down synchronously outside the fixed shell 205 and drives the hinged guide plate 1041 to rotate back and forth inside the wind frame 104, thereby changing the wind direction of the fan 201 blowing inward, so that the wind enters the interior of the purification device evenly and comes into uniform contact with the photocatalyst inside the purification device, avoiding the problem of low photocatalyst utilization efficiency caused by a single wind direction.

[0045] In summary, during use, the laser dust sensor detects the dust level in the space. When the dust level is low, the fan 201 operates at a normal speed, blowing air into the purification device through the air inlet 102, which then passes through the photocatalyst. At this time, the air can pass through the device quickly, and the fan 201 and other equipment do not need to operate at high load for a long time. When the dust level is high, the fan 201 speed increases, and the worm gear 2011 drives the worm wheel 203 to rotate rapidly. When the worm wheel 203 rotates at high speed, the transmission shaft 2031 drives the transmission plate 2032 to rotate rapidly inside the transmission ring 204. The movable rod 2033 on the surface of the transmission plate 2032 moves outward due to the centrifugal force when the transmission plate 2032 rotates. The end of the movable rod 2033 engages in the groove 2041 on the surface of the transmission ring 204 and drives the transmission ring 204 to rotate.

[0046] The rotation of the transmission ring 204 drives the output gear 206 to rotate. The movable column 2062 inside the fixed shell 205 rotates with the output gear 206. The sliding column 2066 on the surface of the straight rod 2065 slides inside the curved groove 2063. When the movable column 2062 rotates, the straight rod 2065 drives the cylinder 2064 to move up and down inside the fixed shell 205, thereby causing the hinge plate 2068 to move up and down outside the fixed shell 205. The guide plate 1041 hinged to the surface of the hinge plate 2068 is driven by the hinge plate 2068 to move the air frame 104 inside, changing the airflow direction. The guide plate 1041 deflects the air and directs it to the originally underutilized photocatalytic area, increasing the contact area between the air and the photocatalyst and improving the utilization rate of the photocatalyst.

[0047] Example 3

[0048] This is the third embodiment of the present invention, which is implemented based on the previous embodiment.

[0049] Specifically, refer to Figure 3 , Figure 5 The adjusting component includes a rack 207 that meshes with an output gear 206. A connecting post 2071 is provided on the outer wall of the rack 207, and a third elastic element 2072 is sleeved on the outer wall of the connecting post 2071. A movable tooth 2073 is movably provided at the other end of the connecting post 2071.

[0050] Among them, reference Figure 5 The movable tooth 2073 is sleeved on the outside of the connecting post 2071 and is pushed by the third elastic element 2072, so that the movable tooth 2073 moves away from the rack 207 when the output gear 206 is not rotating. When the output gear 206 rotates, the rack 207 moves and moves outward. At the same time, the state of the rack 207 is maintained by the meshing of the movable tooth 2073 with the output gear 206.

[0051] Preferably, the other end of the rack 207 is connected to a first connecting rod 2074 and the other end of the first connecting rod 2074 is connected to a second connecting rod 208. The end of the second connecting rod 208 is connected to the first connecting plate 2075 at the end of the first connecting rod 2074 and moves along the arc-shaped groove 2076 opened on the end face of the first connecting plate 2075.

[0052] Among them, reference Figure 7 The first connecting rod 2074 extends outside the fixed housing 205. The first connecting plate 2075 is installed at the tail end of the first connecting rod 2074. The arc groove 2076 on the surface is a parallel groove that is connected. The end of the second connecting rod 208 is initially engaged in the bottom part of the arc groove 2076. When the first connecting rod 2074 is pushed by the rack 207 and moves, the end of the second connecting rod 208 slides from the bottom part of the arc groove 2076 to the top part, and the second connecting rod 208 moves upward.

[0053] Preferably, the other end of the second connecting rod 208 is connected to the second connecting plate 209 and the end face of the second connecting plate 209 is provided with a groove 2091. The movement of the second connecting rod 208 on the surface of the first connecting plate 2075 drives the second connecting plate 209 to move. The end of the second connecting plate 209 is also provided with a third connecting rod 2092.

[0054] The other end of the second connecting rod 208 is engaged in the inclined groove 2091 on the surface of the second connecting plate 209. When the end of the second connecting rod 208 slides from the bottom to the top in the arc groove 2076 on the surface of the first connecting plate 2075, the other end of the second connecting rod 208 slides from low to high in the inclined groove 2091 and drives the third connecting rod 2092 to move. By moving the third connecting rod 2092, the position of the photocatalyst inside the purification device is changed, thereby changing the shape of the air flow channel formed by the photocatalyst layer inside the purification device, changing the time that the air flows inside the flow channel, thereby increasing the contact time between the air and the photocatalyst, and improving the efficiency of dust adsorption and decomposition of other pollutants.

[0055] Example 4

[0056] Reference Figures 6-8 This is the fourth embodiment of the present invention, which provides a catalytic module.

[0057] Specifically, the purification component 400 includes a catalytic module 401, with a retaining plate 402 snapped onto the end of the catalytic module 401 and an adjusting gear 403 provided at the end of the retaining plate 402; The catalyst module 401 has an elliptical plate 301 at its end, and the inner wall of the elliptical plate 301 has moving teeth 302, while the outer wall of the elliptical plate 301 has a push rod 303.

[0058] The catalytic module 401 is connected to the adjusting gear 403 via the clamping plate 402. The adjusting gear 403 meshes with the moving teeth 302 inside the elliptical plate 301. The moving teeth 302 are fixed inside the elliptical plate 301. The push rod 303 on the surface of the elliptical plate 301 is located in the ramp 2093 on the surface of the third connecting rod 2092. When the third connecting rod 2092 moves, the elliptical plate 301 moves laterally through the ramp 2093. When the insert rod 304 at the other end of the elliptical plate 301 moves, it presses the fourth elastic element 305.

[0059] The lateral movement of the elliptical plate 301 causes the adjusting gear 403 to rotate. The separated moving teeth 302 cause the adjusting gear 403 to rotate in opposite directions. The catalytic module 401 changes its posture along with the rotation of the adjusting gear 403. Figure 9 As shown, the catalytic modules 401 change their original parallel arrangement to a different arrangement. At this time, the air blown by the fan 201 changes the residence time of the air in the catalyst area when it passes through the catalytic modules 401, thereby improving the efficiency of dust adsorption and decomposition of other pollutants.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A photocatalytic air purification device based on airflow field, characterized in that, include: The main body component (100) includes a housing (101), an air inlet (102) and an air outlet (103) disposed on the outer wall of the housing (101), and a wind frame (104) disposed on the inner wall of the housing (101). The adjustment component (200) includes a fan (201) and a mounting shell (202) installed inside the housing (101). The mounting shell (202) has a moving part inside, which is connected to and driven by the fan (201). The fan (201) is affected by the monitoring data of the laser dust sensor inside the housing (101) and performs gear adjustment. And purification components (400), including a catalytic module (401); When the monitoring data is normal, the fan (201) rotates normally and the moving parts do not move. When the monitoring data is abnormal, the fan (201) speed is increased. At this time, the moving parts are driven by the fan (201) to move inside the mounting shell (202). When the moving parts move, they drive the guide plate (1041) inside the wind frame (104) to move, changing the direction of the wind force generated by the fan (201). At the same time, the adjustment parts located inside the shell (101) are driven by the moving parts to change the position of the catalytic module (401) inside the purification device, thereby changing the time that air passes through the catalytic module (401). The moving component includes a worm gear (203), which meshes with a worm (2011) at the shaft of the fan (201) and rotates synchronously with the fan (201). A transmission shaft (2031) is provided at the shaft of the worm gear (203), and a transmission plate (2032) is provided at the end of the transmission shaft (2031). Movable rods (2033) are arranged in an array on the end face of the transmission plate (2032). A first elastic element (2034) is connected to the end of the movable rod (2033), and the other end of the first elastic element (2034) is fixed to the end face of the transmission plate (2032) and pulls the movable rod (2033) inward. The outer wall of the transmission plate (2032) is provided with a transmission ring (204) and the inner wall of the transmission ring (204) is provided with slots (2041). The transmission plate (2032) rotates inside the transmission ring (204) and the end of the movable rod (2033) engages in the slot (2041) and drives the transmission ring (204) to rotate.

2. The photocatalytic air purification device based on airflow field as described in claim 1, characterized in that: The mounting housing (202) has a fixed housing (205) inside. The fixed housing (205) has an output gear (206) at its end. The output gear (206) meshes with the transmission gear (2042) on the outer wall of the transmission ring (204). The output gear (206) rotates synchronously with the transmission ring (204).

3. The photocatalytic air purification device based on airflow field as described in claim 2, characterized in that: The output gear (206) is provided with an output shaft (2061) at its end, and the end of the output shaft (2061) extends into the interior of the fixed housing (205) and is connected to a movable column (2062). The fixed housing (205) is also provided with a cylinder (2064) and a straight rod (2065) at its end. The straight rod (2065) is provided with a sliding column (2066) at its end. The end of the sliding column (2066) extends into the inner wall of the curved groove (2063) opened on the outer wall of the movable column (2062) and slides with it. The cylinder (2064) reciprocates inside the fixed housing (205) when it rotates on the surface of the movable column (2062) via the sliding column (2066).

4. The photocatalytic air purification device based on airflow field as described in claim 3, characterized in that: The cylinder (2064) is connected to a hinge plate (2068) at its end. The outer wall of the hinge plate (2068) is hinged to the guide plates (1041) arrayed on the inner wall of the wind frame (104). The guide plates (1041) are reciprocated inside the wind frame (104) by the hinge plate (2068) and change the direction of the wind blown by the fan (201) towards the wind frame (104).

5. The photocatalytic air purification device based on airflow field as described in claim 4, characterized in that: The adjusting component includes a rack (207) that meshes with an output gear (206). A connecting post (2071) is provided on the outer wall of the rack (207), and a third elastic element (2072) is sleeved on the outer wall of the connecting post (2071). A movable tooth (2073) is movably provided at the other end of the connecting post (2071).

6. The photocatalytic air purification device based on airflow field as described in claim 5, characterized in that: The rack (207) is connected to a first connecting rod (2074) at one end and to a second connecting rod (208) at the other end. The end of the second connecting rod (208) is connected to a first connecting plate (2075) at the end of the first connecting rod (2074) and moves along the arc groove (2076) opened on the end face of the first connecting plate (2075).

7. The photocatalytic air purification device based on airflow field as described in claim 6, characterized in that: The other end of the second connecting rod (208) is connected to the second connecting plate (209), and the end face of the second connecting plate (209) is provided with a groove (2091). The movement of the second connecting rod (208) on the surface of the first connecting plate (2075) drives the second connecting plate (209) to move. The end of the second connecting plate (209) is also provided with a third connecting rod (2092).

8. The photocatalytic air purification device based on airflow field as described in claim 1, characterized in that: The catalyst module (401) is fitted with a clamping plate (402) at one end, and the clamping plate (402) is provided with an adjusting gear (403) at one end. The catalyst module (401) is provided with an elliptical plate (301) at its end, and the inner wall of the elliptical plate (301) is provided with moving teeth (302), and the outer wall of the elliptical plate (301) is provided with a push rod (303).

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