Flow-through LED sterilizer

Abstract

This utility model relates to the field of sterilization and disinfection devices, specifically a flow-through LED sterilizer. By setting an inlet and a diversion hole in the central block, it ensures that the water flow can be evenly guided to the vicinity of the left and right UV-LED lamps, thereby increasing the contact time and area between the water flow and the ultraviolet light, and improving the sterilization efficiency. Furthermore, the placement of the left and right outlets ensures the symmetry of the water flow, avoiding the problem of poor sterilization effect caused by asymmetrical water flow. By setting a central block in the center of the cylinder, and setting a left and right arc-shaped reflective surface on both sides of the central block, and placing the left and right UV-LED lamps at the focal points of the left and right arc-shaped reflective surfaces respectively, the light emitted by the left and right UV-LED lamps is more evenly distributed in the water flow channel after reflection, solving the problem of the mismatch between the structure of traditional ultraviolet flow-through sterilizers and the characteristics of UV-LEDs.

Description

Technical Field

[0001] This utility model relates to the field of sterilization and disinfection devices, and in particular to a flow-through LED sterilizer. Background Technology

[0002] Traditional ultraviolet (UV) flow-through sterilizers typically employ a cylindrical cavity to accommodate the structure of tubular low-pressure UV lamps, placing the lamp on the central axis of the cavity to ensure uniform UV radiation distribution and good sterilization effect. With the development of UV-LED technology, it has also been applied to liquid disinfection. However, due to the small size and low radiation intensity of UV-LEDs (typically less than 100mW per LED, far lower than the 1000mW or more output of a 4W low-pressure UV lamp), the traditional cylindrical cavity structure is difficult to utilize. (Reference) Figure 2 This is a common design on the market, where the UV-LED is placed on one side of the sterilizer's outer casing. This results in uneven distribution of ultraviolet energy, with effective sterilization only within a 2-centimeter radius of the LED, while areas further away are almost unsterilized. Furthermore, the end-face mounting of the UV-LED forces the water outlet to be located on the side of the sterilizer, causing asymmetrical water flow and further affecting sterilization efficiency. Therefore, the structure of traditional ultraviolet flow-through sterilizers is poorly matched with the characteristics of UV-LEDs, limiting their sterilization effect.

[0003] Therefore, there is an urgent need for a flow-through LED sterilizer to improve the sterilization efficiency of UV-LED sterilizers. Utility Model Content

[0004] To address the mismatch between the structure of traditional ultraviolet flow sterilizers and the characteristics of UV-LEDs.

[0005] This utility model provides a flow-through LED sterilizer, including a cylindrical body with a left end cap and a right end cap at both ends. A central block is located in the center of the cylindrical body. The left end cap has a left UV-LED lamp and a left water outlet, and the right end cap has a right UV-LED lamp and a right water outlet. A water inlet connector is located on the outer wall of the cylindrical body. The central block has a water inlet hole and a diversion hole. The two ends of the water inlet hole are connected to the water inlet connector and the diversion hole, respectively. A left arc-shaped reflective surface and a right arc-shaped reflective surface are located on both sides of the central block. The left UV-LED lamp is located at the focal point of the left arc-shaped reflective surface, and the right UV-LED lamp is located at the focal point of the right arc-shaped reflective surface.

[0006] Preferably, the focal length of both the left and right arc-shaped reflective surfaces is no greater than 2 cm.

[0007] Preferably, both the left and right arc-shaped reflective surfaces are coated with reflective material.

[0008] Preferably, the inlet hole and the diversion hole are perpendicular to each other, and the diversion hole is located on the axis of the cylinder.

[0009] Preferably, the left end cap has an annular left water collection trough on the side near the center block, and the left water outlet is connected to the left water collection trough; the right end cap has an annular right water collection trough on the side near the center block, and the right water outlet is connected to the right water collection trough.

[0010] Preferably, a left water-blocking ring is provided on the side of the left end cap near the center block, and a right water-blocking ring is provided on the side of the right end cap near the center block. The diameters of both the left and right water-blocking rings are smaller than the inner diameter of the cylinder.

[0011] Preferably, the left UV-LED lamp is connected to the left power cord, and the right UV-LED lamp is connected to the right power cord. Both the left and right end caps are provided with through holes, which are used to conduct the left power cord and the right power cord, respectively.

[0012] Preferably, the water inlet connector is threaded to the cylinder body, the top and bottom of the center block are threaded to the cylinder body, and the left end cap and right end cap are threaded to both sides of the cylinder body respectively.

[0013] Preferably, the left outlet is threaded with a left outlet connector, and the right outlet is threaded with a right outlet connector.

[0014] Preferably, the center block is made of stainless steel.

[0015] The beneficial effects of this invention are reflected in the fact that by setting an inlet and a diversion hole in the central block, the water flow is ensured to be evenly guided to the vicinity of the left and right UV-LED lamps, thereby increasing the contact time and area between the water flow and the ultraviolet light, and improving the sterilization efficiency. Furthermore, the placement of the left and right outlets ensures the symmetry of the water flow, avoiding the problem of poor sterilization effect caused by asymmetrical water flow. Traditional cylindrical cavity designs are more suitable for long-tube low-pressure ultraviolet lamps, but the small size and low radiation intensity of UV-LEDs make this traditional design unsuitable. By setting a central block in the center of the cylinder, and setting a left and right arc-shaped reflective surface on both sides of the central block, and placing the left and right UV-LED lamps at the focal points of the left and right arc-shaped reflective surfaces respectively, the light emitted by the left and right UV-LED lamps is more evenly distributed in the water flow channel after reflection, solving the problem of the mismatch between the structure of traditional ultraviolet flow-through sterilizers and the characteristics of UV-LEDs. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a flow-through LED sterilizer provided by this utility model.

[0017] Figure 2 This utility model provides a commonly available UV-LED sterilizer design.

[0018] In the diagram: 1-Cylinder body; 11-Water inlet connector; 2-Left end cap; 21-Left UV-LED lamp; 22-Left outlet; 23-Left water collection tank; 24-Left water baffle ring; 25-Left power cord; 26-Left outlet connector; 3-Right end cap; 31-Right UV-LED lamp; 32-Right outlet; 33-Right water collection tank; 34-Right water baffle ring; 35-Right power cord; 36-Right outlet connector; 4-Center block; 41-Water inlet hole; 42-Diverter hole; 43-Left arc-shaped reflector surface; 44-Right arc-shaped reflector surface; 5-Sterilizer shell; 51-Water inlet; 52-Water outlet; 53-UV-LED. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Reference Figure 1 A flow-through LED sterilizer includes a cylindrical body 1. The cylindrical body 1 has a left end cap 2 and a right end cap 3 at its two ends. A central block 4 is provided in the center of the cylindrical body 1. The left end cap 2 is provided with a left UV-LED lamp 21 and a left water outlet 22. The right end cap 3 is provided with a right UV-LED lamp 31 and a right water outlet 32. A water inlet connector 11 is provided on the outer wall of the cylindrical body 1. The central block 4 is provided with a water inlet hole 41 and a diversion hole 42. The two ends of the water inlet hole 41 are connected to the water inlet connector 11 and the diversion hole 42, respectively. A left arc-shaped reflective surface 43 and a right arc-shaped reflective surface 44 are provided on both sides of the central block 4. The left UV-LED lamp 21 is located at the focal point of the left arc-shaped reflective surface 43, and the right UV-LED lamp 31 is located at the focal point of the right arc-shaped reflective surface 44.

[0021] By setting inlet hole 41 and diversion hole 42 in the central block 4, it is ensured that the water flow can be evenly guided around the left UV-LED lamp 21 and right UV-LED lamp 31, thereby increasing the contact time and area between the water flow and ultraviolet light and improving the sterilization efficiency. In addition, the setting of left outlet 22 and right outlet 32 ​​ensures the symmetry of the water flow and avoids the problem of poor sterilization effect caused by asymmetrical water flow. The traditional cylindrical cavity design is more suitable for long tube low-pressure ultraviolet lamps, but the small size and low radiation intensity of UV-LEDs make this traditional design no longer applicable. By setting a central block 4 at the center of the cylinder 1, and setting a left arc-shaped reflective surface 43 and a right arc-shaped reflective surface 44 on both sides of the central block 4, and placing the left UV-LED lamp 21 and the right UV-LED lamp 31 at the focal points of the left and right arc-shaped reflective surfaces 44 respectively, the light emitted by the left UV-LED lamp 21 and the right UV-LED lamp 31 is more evenly distributed in the water flow channel after reflection, thus solving the problem of mismatch between the structure of the traditional ultraviolet flow sterilizer and the characteristics of UV-LED.

[0022] In some embodiments, the focal length of the left arc-shaped reflective surface 43 and the focal length of the right arc-shaped reflective surface 44 are both no greater than 2 cm.

[0023] Since the ultraviolet radiation power of the left UV-LED lamp 21 and the right UV-LED lamp 31 is typically low, generally below 100mW, and water has a strong absorption effect on ultraviolet rays, especially beyond a distance of 2cm, where the intensity of ultraviolet rays will decrease significantly, by controlling the focal length to around 2cm, the ultraviolet light can be effectively reflected by the left curved reflective surface 43 and the right curved reflective surface 44, thereby making full use of the limited ultraviolet energy and avoiding energy waste during transmission.

[0024] Preferably, both the left arc-shaped reflective surface 43 and the right arc-shaped reflective surface 44 are coated with reflective material.

[0025] Because the left UV-LED lamp 21 and the right UV-LED lamp 31 are relatively small, directly mounting them on the left end cap 2 and the right end cap 3 would result in uneven distribution of ultraviolet light. By using a left arc-shaped reflective surface 43 and a right arc-shaped reflective surface 44 with reflective material, the light emitted by the left UV-LED lamp 21 and the right UV-LED lamp 31 is reflected to form parallel rays, further enhancing the energy utilization efficiency of the left UV-LED lamp 21 and the right UV-LED lamp 31.

[0026] In some embodiments, the inlet hole 41 and the diversion hole 42 are perpendicular to each other, and the diversion hole 42 is located on the axis of the cylinder 1.

[0027] By placing the diversion hole 42 on the axis of the cylinder 1, it is ensured that the water entering from the inlet hole 41 can be evenly distributed to the cavities on both sides of the central block 4. This guarantees a symmetrical and uniform distribution of water flow throughout the sterilizer, avoiding the problem of excessively fast or slow water flow in some areas due to uneven distribution. The uniform water flow distribution ensures that the amount and speed of water flowing around the left UV-LED lamp 21 and the right UV-LED lamp 31 remain consistent, increasing the opportunity for water to come into contact with ultraviolet light, thereby improving the overall sterilization efficiency.

[0028] In some embodiments, the left end cap 2 is provided with an annular left water collection trough 23 on the side near the center block 4, and the left water outlet 22 is connected to the left water collection trough 23. The right end cap 3 is provided with an annular right water collection trough 33 on the side near the center block 4, and the right water outlet 32 ​​is connected to the right water collection trough 33.

[0029] By setting up the annular left water collection trough 23 and right water collection trough 33, it can be ensured that the water flowing in from the diversion hole 42 can be evenly distributed to the cavities on both sides of the central block 4. When the water flows to the left end cover 2 or the right end cover 3, due to the obstruction of the left end cover 2 or the right end cover 3, the water will flow radially outward and flow into the left water collection trough 23 through the gap between the left water collection trough 23 and the inner wall of the cylinder 1. The water will flow into the right water collection trough 33 through the gap between the right water collection trough 33 and the inner wall of the cylinder 1. This allows the water that has been irradiated by ultraviolet light to be effectively collected and discharged from the sterilizer through the outlet, ensuring that the water can be fully irradiated by ultraviolet light in the working chamber.

[0030] Preferably, a left water-blocking ring 24 is provided on the side of the left end cap 2 near the center block 4, and a right water-blocking ring 34 is provided on the side of the right end cap 3 near the center block 4. The diameters of the left water-blocking ring 24 and the right water-blocking ring 34 are both smaller than the inner diameter of the cylinder 1.

[0031] The design of the left baffle ring 24 and the right baffle ring 34 helps to reduce turbulence during water flow and reduce the formation of dead zones in the water flow; it not only helps to maintain the stability of the water flow, but also ensures that the water quality of the entire sterilizer can be effectively disinfected.

[0032] In some embodiments, the left UV-LED lamp 21 is connected to the left power line 25, and the right UV-LED lamp 31 is connected to the right power line 35. Both the left end cover 2 and the right end cover 3 are provided with through holes, which are used to conduct the left power line 25 and the right power line 35, respectively.

[0033] By setting through holes to conduct the left power line 25 and the right power line 35 respectively, it is ensured that both the left UV-LED lamp 21 and the right UV-LED lamp 31 can receive power support, thereby stably emitting ultraviolet light for sterilization.

[0034] In some embodiments, the water inlet connector 11 is threadedly connected to the cylinder 1, the top and bottom of the center block 4 are threadedly connected to the cylinder 1, and the left end cap 2 and the right end cap 3 are threadedly connected to both sides of the cylinder 1, respectively.

[0035] When it is necessary to clean, maintain or replace parts inside the cylinder 1, the threaded connection allows for easy and quick assembly or disassembly of the cylinder 1, water inlet connector 11, center block 4, left end cover 2 and right end cover 3, improving maintenance efficiency.

[0036] In some embodiments, the left outlet 22 is threadedly connected to a left outlet connector 26, and the right outlet 32 ​​is threadedly connected to a right outlet connector 36.

[0037] The left and right water outlet connectors 26 and 36 allow water to be collected and directed to the water-using equipment via external piping. The threaded connection allows for quick and easy installation and removal of both connectors.

[0038] In some implementations, the center block 4 is made of stainless steel.

[0039] Stainless steel is characterized by its strong corrosion resistance, high mechanical strength, and ease of cleaning, which can improve the working efficiency of the sterilizer, extend its service life, and meet food safety and hygiene standards. Furthermore, the reflectivity of the left and right arc-shaped reflective surfaces 43 and 44 can be improved through polishing.

[0040] In the description of the embodiments of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "center," "top," "bottom," "top," "bottom," "inner," "outer," "inner side," and "outer side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. "Inner side" refers to the interior or enclosed area or space. "Outer perimeter" refers to the area surrounding a specific component or specific area.

[0041] In the description of the embodiments of this utility model, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow-through LED sterilizer, characterized in that: include: The cylinder has a left end cap and a right end cap at its two ends. A center block is located in the center of the cylinder. The left end cap has a left UV-LED lamp and a left water outlet, and the right end cap has a right UV-LED lamp and a right water outlet. The outer wall of the cylinder has a water inlet connector. The center block has a water inlet hole and a diversion hole. The two ends of the water inlet hole are connected to the water inlet connector and the diversion hole, respectively. The center block has a left arc-shaped reflective surface and a right arc-shaped reflective surface on its two sides. The left UV-LED lamp is located at the focal point of the left arc-shaped reflective surface, and the right UV-LED lamp is located at the focal point of the right arc-shaped reflective surface.

2. The flow-through LED sterilizer according to claim 1, characterized in that: The focal length of both the left and right arc-shaped reflective surfaces is no greater than 2 cm.

3. A flow-through LED sterilizer according to claim 1 or 2, characterized in that: Both the left and right arc-shaped reflective surfaces are coated with reflective material.

4. The flow-through LED sterilizer according to claim 1, characterized in that: The water inlet and the diversion hole are perpendicular to each other, and the diversion hole is located on the axis of the cylinder.

5. A flow-through LED sterilizer according to claim 1, characterized in that: The left end cap has an annular left water collection trough on the side near the center block, and the left water outlet is connected to the left water collection trough. The right end cap has an annular right water collection trough on the side near the center block, and the right water outlet is connected to the right water collection trough.

6. A flow-through LED sterilizer according to claim 1 or 5, characterized in that: The left end cap is provided with a left water-blocking ring on the side near the center block, and the right end cap is provided with a right water-blocking ring on the side near the center block. The diameters of both the left and right water-blocking rings are smaller than the inner diameter of the cylinder.

7. A flow-through LED sterilizer according to claim 1, characterized in that: The left UV-LED lamp is connected to the left power cord, and the right UV-LED lamp is connected to the right power cord. Both the left and right end caps have through holes, which are used to conduct the left and right power cords respectively.

8. A flow-through LED sterilizer according to claim 1, characterized in that: The water inlet connector is threaded to the cylinder body, the top and bottom of the center block are threaded to the cylinder body, and the left end cap and right end cap are threaded to both sides of the cylinder body respectively.

9. A flow-through LED sterilizer according to claim 1, characterized in that: The left outlet is threaded with a left outlet connector, and the right outlet is threaded with a right outlet connector.

10. A flow-through LED sterilizer according to claim 1, characterized in that: The central block is made of stainless steel.

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