Ultraviolet air treatment device and shading guide plate thereof

Abstract

The utility model relates to the technical field of air purification, in particular to an ultraviolet air treatment device and a shading flow guide plate thereof, the ultraviolet air treatment device is provided with an air inlet, the shading flow guide plate is used for being installed on the front face or the back face of an ultraviolet light device, and a plurality of flow guide channels arranged in sequence are arranged on the shading flow guide plate. A preset included angle is formed between the axial direction of the flow guide channel and the direction perpendicular to the shading flow guide plate, so that airflow of the ultraviolet air treatment device passes through the flow guide channel at the preset included angle. The shading guide plate disclosed by the utility model is good in shading effect and small in wind resistance, and the ultraviolet air treatment device is low in noise in the operation process.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to an ultraviolet air treatment device and its light-shielding guide plate. Background Technology

[0002] Ultraviolet (UV) air preparation units disinfect incoming air with ultraviolet light before releasing it, achieving the effect of air disinfection. UV air preparation units are commonly used in places such as hospitals or farms where frequent air disinfection is required.

[0003] Ultraviolet (UV) air handling units are equipped with baffles to guide the airflow within the unit and provide some shielding against UV light. Existing baffles in this technology are mostly multi-layered physical structures and are installed in separate units. While the multi-layered structure is intended to block UV rays, it creates significant air resistance during operation, resulting in high noise levels. Furthermore, the separate installation method increases the difficulty of assembly and disassembly and makes it easier for dust and other debris to accumulate on the baffles, which greatly reduces the unit's disinfection effectiveness. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an ultraviolet air treatment device and its light-shielding guide plate, which has good light-shielding effect, low wind resistance, and low noise during operation.

[0005] To address the aforementioned problems, this utility model proposes a light-shielding guide plate for an ultraviolet air treatment device. The ultraviolet air treatment device has an air inlet, and the light-shielding guide plate is used to install on the front or back of the ultraviolet light device. The light-shielding guide plate is characterized by having multiple sequentially arranged guide channels. The axial direction of the guide channels has a predetermined angle with the direction perpendicular to the light-shielding guide plate, so that the airflow of the ultraviolet air treatment device passes through the guide channels at a predetermined angle.

[0006] As an improvement to the above technical solution, the angle between the axial direction of the flow channel and the direction perpendicular to the light-shielding flow guide plate is α, where α is 10-45°.

[0007] As an improvement to the above technical solution, the thickness of the light-shielding guide plate is D, where D is 10-30mm.

[0008] As an improvement to the above technical solution, the cross-section of the flow guide channel perpendicular to its axial direction is a polygonal structure. The polygonal structure includes at least two parallel planes that are parallel to each other. The parallel planes are parallel to the axial direction of the flow guide channel and have a predetermined angle with the direction perpendicular to the light-shielding flow guide plate.

[0009] As an improvement to the above technical solution, the wall thickness of the flow channel is L, which is 0.04-0.2mm; the distance between two parallel planes in the polygonal structure is d, and the ratio of L to d is 1:40-1:125.

[0010] As an improvement to the above technical solution, the cross-section of the flow guiding channel along the direction perpendicular to the light-shielding guide plate is a regular hexagon or a regular quadrilateral.

[0011] As an improvement to the above technical solution, when the cross-section of the flow guiding channel along the direction perpendicular to the light-shielding guide plate is a regular hexagon, the wall thickness of the flow guiding channel is L, the side length of the regular hexagon is a, and the ratio of L to a is 1:5-1:75.

[0012] As an improvement to the above technical solution, the inner wall of the flow channel is provided with a light-absorbing coating; the light-absorbing coating is a titanium dioxide coating, a zinc oxide coating, an acrylic coating, an activated carbon coating, or a modified activated carbon coating.

[0013] As an improvement to the above technical solution, the light-shielding guide plate is an integrally formed structure.

[0014] Accordingly, this utility model also provides an ultraviolet air treatment device, including a device housing, a filter, an ionization device, an adsorption device, an ultraviolet light device, a photocatalyst mesh, and a light-shielding guide plate as described above.

[0015] The following are the beneficial effects of implementing this utility model:

[0016] The light-shielding guide plate of this invention has multiple sequentially arranged airflow channels. These multiple channels increase the porosity of the light-shielding guide plate; higher porosity results in less wind resistance when air blows onto the light-shielding guide plate, thus effectively reducing noise. Secondly, the axial direction of the airflow channels forms a predetermined angle with the direction perpendicular to the light-shielding guide plate, allowing the airflow of the ultraviolet air handling device to pass through the airflow channels at a preset angle. Due to this angle, ultraviolet light cannot directly pass through the airflow channels, which effectively block ultraviolet light.

[0017] Furthermore, the inner wall of the flow channel is provided with a light-absorbing coating, which may be a titanium dioxide coating, zinc oxide coating, acrylic coating, activated carbon coating, or modified activated carbon coating. This allows ultraviolet light to be repeatedly reflected on the inner wall surface, achieving both light absorption and shading. Simultaneously, the property of nano-titanium dioxide to generate active oxygen and free radicals under ultraviolet light irradiation can be utilized to oxidize organic pollutants in the air, thereby achieving air purification.

[0018] Finally, the light-shielding deflector is a one-piece molded structure, which reduces the difficulty of disassembly and assembly and makes it easier to clean. Attached Figure Description

[0019] Figure 1 This is a perspective view of a light-shielding guide plate according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of a light-shielding guide plate according to an embodiment of the present invention;

[0021] Figure 3 This is an enlarged cross-sectional view of the light-shielding guide plate of Embodiment 1 of this utility model;

[0022] Figure 4 This is an enlarged cross-sectional view of the light-shielding guide plate of Embodiment 3 of this utility model;

[0023] Figure 5 This is an enlarged cross-sectional view of the light-shielding guide plate of Embodiment 4 of this utility model.

[0024] Figure 6 This is an enlarged cross-sectional view of the light-shielding guide plate of Embodiment 5 of this utility model;

[0025] Figure 7 This is an enlarged cross-sectional view of the light-shielding guide plate of Embodiment 8 of this utility model;

[0026] Figure 8 This is an anatomical view of an ultraviolet light device according to an embodiment of this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0028] See Figure 1 and Figure 2 As shown, this utility model embodiment provides a light-shielding guide plate for an ultraviolet air treatment device. The main improvement is to the guide channel 11 of the light-shielding guide plate 1, so as to reduce wind resistance and reduce the difficulty of disassembly and assembly.

[0029] Specifically, the ultraviolet air treatment device has an air inlet, and the light-shielding guide plate 1 is used to be installed on the front or back of the ultraviolet light device. The light-shielding guide plate 1 is provided with a plurality of sequentially arranged guide channels 11. The axial direction of the guide channel 11 has a predetermined angle with the direction perpendicular to the light-shielding guide plate 1, so that the airflow of the ultraviolet air treatment device passes through the guide channel 11 at a preset angle.

[0030] The light-shielding guide plate 1 of this utility model is provided with a plurality of sequentially arranged guide channels 11. This can improve the porosity of the light-shielding guide plate 1. The higher the porosity, the less wind resistance is generated when the airflow passes through the guide plate body 1, thereby effectively reducing noise. Secondly, the axial direction of the guide channel 11 has a predetermined angle with the direction perpendicular to the light-shielding guide plate 1. When ultraviolet light shines on the light-shielding guide plate 1, most of the light will shine on the inner wall of the guide channel 11 and be reflected inside, effectively blocking the ultraviolet light.

[0031] The wind resistance of the light-shielding guide plate 1 varies with the angle between the airflow entering the guide channel 11 and the airflow itself, increasing with the angle and reaching its maximum value during vertical impact. Preferably, the angle between the axial direction of the guide channel 11 and the direction perpendicular to the light-shielding guide plate is α, where α is 10-45°. When α > 45°, the angle change when the airflow enters the guide channel 11 is too large, increasing the wind resistance experienced by the light-shielding guide plate 1 and thus increasing the noise during device operation. When α < 10°, the angle is too small, allowing ultraviolet light to pass directly through the guide channel 11 without providing an effective shielding effect. The angle between the axial direction of the guide channel 11 and the axial direction of the guide plate body 1 is α, exemplarily 10°, 15°, 20°, 27°, and 45°, but not limited to these.

[0032] The thickness of the light-shielding guide plate 1 affects its wind resistance and light-shielding effect during operation. Preferably, the thickness of the light-shielding guide plate 1 is D, where D is 10-30mm. When the thickness of the light-shielding guide plate 1 is less than 10mm, the length of the guide channel 11 through which the airflow of the ultraviolet air handling device passes is too short, which increases the probability of ultraviolet light passing through the guide channel 11 and fails to achieve an effective light-shielding effect. When the thickness of the light-shielding guide plate 1 is greater than 30mm, the length of the guide channel 11 is too long, increasing wind resistance and failing to achieve the noise reduction effect. The thickness D of the light-shielding guide plate 1 is exemplarily 10mm, 15mm, 20mm, or 30mm, but is not limited to these.

[0033] The airflow channels 11 are preferably densely arranged on the light-shielding guide plate 1. It should be noted that, as long as the effect of densely arranging the airflow channels 11 on the light-shielding guide plate 1 can be achieved, the cross-section of the airflow channels 11 perpendicular to its axial direction can be a polygonal structure or a structure with an arc segment. Preferably, the cross-section of the airflow channels 11 perpendicular to its axial direction is a polygonal structure, which includes at least two parallel planes. These parallel planes are parallel to the axial direction of the airflow channels 11, and the parallel planes form a predetermined angle with the direction perpendicular to the light-shielding guide plate 1. This polygonal structure, combined with the change in the airflow angle caused by the airflow channels, can suppress airflow separation, reduce the low-pressure vortex region, and thus further reduce wind resistance.

[0034] Specifically, the wall thickness of the flow channel 11 and the distance between two parallel planes in the polygonal structure will affect the porosity and flow guiding effect of the flow channel on the light-shielding flow guide plate.

[0035] Preferred, see Figure 6 As shown, the wall thickness of the flow guiding channel is L, which is 0.04-0.2 mm; the distance between two parallel planes in the polygonal structure is d, and the ratio of L to d is 1:40-1:125. When the ratio of L to d is 1:40-1:125, both flow guiding efficiency and structural stability can be balanced, achieving not only good light-blocking effect but also reducing wind resistance and noise during operation.

[0036] The wall thickness of the flow channel is L, which is preferably 0.04-0.2 mm. Examples of L include 0.2 mm, 0.15 mm, 0.1 mm, and 0.04 mm, but it is not limited to these.

[0037] When the wall thickness of the flow channel is greater than 0.2 mm, its porosity is reduced, thus reducing the flow efficiency; when the wall thickness of the flow channel is less than 0.04 mm, the structural strength is insufficient, and it is easily damaged during use.

[0038] The distance between two parallel planes in the polygonal structure is d, which is preferably 1.6-25mm. Examples of d include 2.0mm, 10mm, 15mm, and 25mm, but it is not limited to these.

[0039] When d is less than 1.6 mm, the resistance of the airflow through the guide channel increases, thereby increasing the noise when the device is working; when d is greater than 25 mm, the pores of the light-shielding guide plate are too large, reducing its blocking effect on ultraviolet light and reducing its structural strength.

[0040] Preferred, see Figure 6 As shown, the cross-section of the flow guide channel 11 perpendicular to its axial direction is a regular hexagon or a regular square. Regular hexagons and squares facilitate processing and splicing, reducing processing costs. Ideally, the cross-section of the flow guide channel 11 perpendicular to its axial direction is a regular hexagon. The six-axis symmetry of the regular hexagon makes the lateral pressure gradient experienced by the airflow more balanced, avoiding unilateral separation and further reducing the wind resistance generated when the airflow flows through the flow guide channel. Specifically, the ratio of the side length of the regular hexagon to the wall thickness of the flow guide channel affects the flow guiding efficiency of the light-shielding guide plate. The wall thickness of the flow guide channel is L, and the side length of the regular hexagon is a. When the ratio of L to a is 1:5-1:75, both flow guiding efficiency and structural stability can be balanced.

[0041] To further enhance the light-shielding effect of the flow channel 11, the inner wall of the flow channel is coated with a titanium dioxide coating, a zinc oxide coating, an acrylic coating, an activated carbon coating, or a modified activated carbon coating, but is not limited to these. Light-absorbing coatings such as activated carbon cause ultraviolet light to be repeatedly reflected on the inner wall surface, achieving the purpose of light absorption and shading. Preferably, the coating is nano-titanium dioxide, which, under ultraviolet light irradiation, generates active oxygen and free radicals, oxidizing airborne organic pollutants and achieving air purification.

[0042] See Figure 8 As shown, this utility model embodiment also provides an ultraviolet air treatment device, including a device housing 2, a filter 3, an ionization device 4, an adsorption device 5, an ultraviolet light device 6, a photocatalyst mesh 7, and the aforementioned light-shielding guide plate 1.

[0043] Example 1

[0044] See Figure 3 As shown, the thickness of the light-shielding guide plate is 10mm. The light-shielding guide plate 1 has multiple closely spaced guide channels 11. The cross-section of each guide channel 11 perpendicular to its axial direction is an equilateral triangle with a side length of 2mm. The angle between the axial direction of the guide channel 1 and the direction perpendicular to the main body of the guide plate is 10°, and the wall thickness of the guide channel 11 is 0.04mm.

[0045] Example 2

[0046] The thickness of the light-shielding guide plate is 20mm. The light-shielding guide plate 1 has multiple closely spaced guide channels 11. The cross-section of the guide channel 11 perpendicular to its axial direction is trapezoidal, and the distance from the top edge to the bottom edge of the trapezoid is 3mm. The angle between the axial direction of the guide channel 11 and the direction perpendicular to the main body of the guide plate is 20°, and the wall thickness of the guide channel 11 is 0.1mm.

[0047] Example 3

[0048] See Figure 4 As shown, the thickness of the light-shielding guide plate is 30mm. The light-shielding guide plate 1 has multiple closely spaced guide channels 11. The cross-section of each guide channel 11 perpendicular to its axial direction is rhomboid, with a vertices of 60° and a distance of 10mm between two opposite parallel sides. The angle between the axial direction of the guide channel 11 and the direction perpendicular to the main body of the guide plate is 30°, and the wall thickness of the guide channel 11 is 0.15mm.

[0049] Example 4

[0050] See Figure 5As shown, the thickness of the light-shielding guide plate is 30mm. The light-shielding guide plate 1 has multiple closely spaced guide channels 11. The cross-section of each guide channel 11 perpendicular to its axial direction is a regular quadrilateral with a side length of 15mm. The angle between the axial direction of the guide channel 11 and the direction perpendicular to the main body of the guide plate is 45°, and the wall thickness of the guide channel 11 is 0.2mm.

[0051] Example 5

[0052] See Figure 6 As shown, the thickness of the light-shielding guide plate is 20mm. The light-shielding guide plate 1 has multiple closely spaced guide channels 11. The cross-section of each guide channel 11 perpendicular to its axial direction is a regular hexagon with a side length of 10mm. The angle between the axial direction of the guide channel 11 and the direction perpendicular to the main body of the guide plate is 20°, and the wall thickness of the guide channel 11 is 0.2mm.

[0053] Example 6

[0054] The thickness of the light-shielding guide plate is 20mm. Multiple closely spaced flow channels 11 are provided on the light-shielding guide plate 1. The cross-section of each flow channel 11 perpendicular to its axial direction is a regular hexagon with a side length of 3mm. The angle between the axial direction of the flow channel 11 and the direction perpendicular to the main body of the guide plate is 30°, and the wall thickness of the flow channel 11 is 0.1mm. The inner wall of the flow channel is coated with a coating.

[0055] Example 7

[0056] The light-shielding guide plate is 20mm thick and has multiple sequentially arranged guide channels. The cross-section of each guide channel perpendicular to its axial direction is circular, with a diameter of 3mm. The angle between the axial direction of the guide channel and the air supply direction of the ultraviolet air handling unit is 10°.

[0057] Example 8

[0058] See Figure 7 As shown, the thickness of the light-shielding guide plate is 20mm. The guide plate has multiple sequentially arranged flow channels. Each flow channel has a V-shaped cross-section perpendicular to its axial direction. The distance between the top and bottom surfaces of the V-shape is 1.8mm, and the width at both ends is 8mm. The angle between the axial direction of the flow channel 11 and the direction perpendicular to the main body of the guide plate is 45°.

[0059] The light-shielding guide plates of Examples 1-8 were placed under a wind speed of 1.8 m / s to test the wind resistance experienced by the light-shielding guide plates.

[0060] The test results are as follows:

[0061] Test wind speed (m / s) Resistance (Pa) Example 1 1.8 14 Example 2 1.8 13 Example 3 1.8 11 Example 4 1.8 12 Example 5 1.8 7 Example 6 1.8 9 Example 7 1.8 22 Example 8 1.8 18

[0062] As can be seen from the above embodiments, the light-shielding guide plate provided by this utility model can effectively reduce the wind resistance when the airflow of the ultraviolet air handling device passes through, thereby reducing the noise when the device is working.

[0063] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A light-shielding baffle for an ultraviolet air treatment device having an air inlet, the light-shielding baffle being used for installation in the front or back of an ultraviolet light device, characterized by, The light-shielding guide plate is provided with a plurality of sequentially arranged guide channels. The axial direction of the guide channels has a predetermined angle with the direction perpendicular to the light-shielding guide plate, so that the airflow of the ultraviolet air treatment device passes through the guide channels at a preset angle.

2. The light-shield deflector according to claim 1, wherein The angle between the axial direction of the flow channel and the direction perpendicular to the light-shielding flow guide plate is α, where α is 10-45°.

3. The light-shield deflector according to claim 1, wherein The thickness of the light-shielding guide plate is D, where D is 10-30mm.

4. The light-shield deflector according to claim 1, wherein The wall thickness of the flow channel is L, which is 0.04-0.2 mm.

5. The light-shield deflector of claim 1, wherein The cross-section of the flow channel perpendicular to its axial direction is a polygonal structure. The polygonal structure includes at least two parallel planes that are parallel to each other. The parallel planes are parallel to the axial direction of the flow channel and have a predetermined angle with the direction perpendicular to the light-shielding flow guide plate.

6. The light-shield deflector according to claim 5, wherein The wall thickness of the flow channel is L, and the distance between two parallel planes in the polygonal structure is d. The ratio of L to d is 1:40-1:

125.

7. The light-shield deflector according to claim 5, wherein The cross-section of the flow channel along the direction perpendicular to the light-shielding guide plate is a regular hexagon or a regular quadrilateral.

8. The light-shield deflector according to claim 7, wherein When the cross-section of the flow channel along the direction perpendicular to the light-shielding flow guide plate is a regular hexagon, the wall thickness of the flow channel is L, the side length of the regular hexagon is a, and the ratio of L to a is 1:5-1:

75.

9. The shade and fairing panel of claim 1, wherein, The inner wall of the flow channel is provided with a light-absorbing coating; the light-absorbing coating is a titanium dioxide coating, a zinc oxide coating, an acrylic coating, an activated carbon coating, or a modified activated carbon coating.

10. The light-shielding guide plate as described in claim 1, characterized in that, The light-shielding guide plate is a one-piece molded structure.

11. An ultraviolet air treatment device, characterized by, It includes a housing, a filter, an ionization device, an adsorption device, an ultraviolet light device, a photocatalyst mesh, and a light-shielding guide plate as described in any one of claims 1-10.

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