Constant-temperature incubator based on dynamic ultraviolet and ozone synergistic sterilization

Abstract

The utility model discloses a constant-temperature incubator based on dynamic ultraviolet and ozone synergistic sterilization, and belongs to the technical field of strain culture. The incubator comprises an incubator body, an annular sliding rail is arranged at the top of the incubator body, 6-8 short-wave ultraviolet lamp tubes inclined by 45 degrees are driven by a motor to move along the sliding rail, and multi-directional dynamic irradiation of ultraviolet rays is realized and a sterilization blind area is eliminated by combining a rotating platform driven by a stepping motor at the bottom and a prism texture reflecting plate. An ozone generator is arranged in the box and cooperates with ultraviolet rays to permeate the complex structure area for sterilization. The honeycomb net-shaped culture dish plate is movably mounted on the raised lines in the box, so that the layout is convenient to adjust; the sealing glass door reduces environmental interference, and the cooling fan and the air channel maintain temperature and humidity balance. The device solves the problems of incomplete traditional sterilization, chemical residues and the like, and is suitable for efficient anti-pollution scenes of microbial culture.

Description

Technical Field

[0001] This utility model belongs to the field of microbial culture technology, specifically relating to a constant temperature incubator based on dynamic ultraviolet and ozone synergistic sterilization. Background Technology

[0002] Microbial incubators are core equipment in microbial research, medical testing, and industrial fermentation. They provide stable growth conditions for bacteria, fungi, and other microorganisms by precisely controlling temperature, humidity, and gaseous environments such as CO2 and O2. This equipment is widely used in laboratory microbial culture, clinical pathogen culture, drug quality testing, and agricultural probiotic preparation. Its core functions rely on high-precision sensors (such as PT100 platinum resistance thermometers), PID temperature control algorithms, and forced convection systems to achieve a stable environment with temperature fluctuations ≤ ±0.2℃ and humidity deviations ±3%RH. However, despite its mature technology, disinfection and contamination control remain major technical shortcomings of current microbial incubators, directly affecting the reliability and biosafety of experimental results. Existing incubators mostly use fixed ultraviolet lamps or chemical fumigation with oxyacetic acid for disinfection. However, due to the linear propagation characteristics of ultraviolet light, it is difficult to cover the corners and edges of the chamber, gaps in the partition supports, and recessed areas of the door seals, resulting in disinfection blind spots. While chemical fumigation can penetrate complex structures, residual disinfectant may corrode stainless steel liner or contaminate culture samples, especially in scenarios with frequent disinfection, accelerating equipment aging and interfering with experimental results. Utility Model Content

[0003] This invention proposes a pollution-proof constant temperature incubator based on dynamic ultraviolet light and ozone synergistic sterilization, aiming to achieve full-coverage sterilization of the inner cavity through a multi-directional dynamic ultraviolet light and ozone synergistic system.

[0004] A pollution-resistant constant temperature incubator based on dynamic ultraviolet and ozone synergistic sterilization is characterized by: a chamber body; an aluminum alloy annular slide rail installed at the top of the chamber's inner cavity; conductive contacts on the surface of the annular slide rail; 6-8 short-wave ultraviolet lamps installed at equal intervals on the annular slide rail via sliders; the lamps are installed at a 45° angle and covered with quartz glass protective tubes, with both ends fixed by silicone sealing rings; conductive contacts on the sliders; all sliders connected to the output shaft of a motor via connecting rods; the motor drives the sliders to move uniformly along the annular slide rail and supplies power through the conductive contacts; an ozone generator and a catalytic decomposition module are installed next to the annular slide rail; the catalytic decomposition module contains a composite filter element of MnO2 and activated carbon; a stepper motor is installed at the center of the bottom of the chamber's inner cavity; the output shaft of the stepper motor is connected to the center of a rotating platform via a rotating shaft; the stepper motor drives the rotating platform to rotate; an arc-shaped stainless steel reflector is fixed to the edge of the rotating platform, and the surface of the reflector is designed with a prism texture.

[0005] Furthermore, an electric heating box can be installed on either the left or right side of the enclosure.

[0006] Furthermore, the ultraviolet wavelength of the short-wave ultraviolet lamp is 254nm.

[0007] Furthermore, several pairs of parallel convex strips are provided on both sides of the inner cavity of the box, and the culture dish plate is movably installed in the box through the convex strips. The culture dish plate has a honeycomb mesh structure.

[0008] Furthermore, the front of the enclosure is provided with a door, and a sealed glass door is provided in the middle of the door.

[0009] The beneficial effects of this invention are as follows: By using a dynamically moving short-wave ultraviolet lamp on a ring-shaped slide rail, combined with a 45° tilt installation and multi-directional movement design, disinfection blind spots such as corners and gaps within the chamber are effectively eliminated. The ultraviolet light is used in conjunction with an ozone generator, allowing ozone molecules to penetrate complex structural areas, compensating for the shortcomings of ultraviolet light's linear propagation, achieving synergistic physical and chemical sterilization, and significantly improving sterilization efficiency. The catalytic decomposition module incorporates a composite filter of MnO2 and activated carbon, rapidly decomposing residual ozone, preventing corrosion of the stainless steel inner liner or contamination of culture samples, ensuring equipment lifespan and experimental safety. The bottom rotating platform is equipped with a prism-textured reflector, driven by a stepper motor to rotate synchronously with the ultraviolet lamp, reflecting and evenly dispersing ultraviolet light, enhancing light energy utilization. The sealed glass door design supports non-contact observation, reducing temperature fluctuations and external microbial contamination caused by frequent door openings, ensuring a stable culture environment. The honeycomb mesh culture dish plate is movable via raised strips, facilitating flexible spatial layout adjustments. Attached Figure Description

[0010] Figure 1 This is a front view of the external structure of a constant temperature incubator based on dynamic ultraviolet light and ozone synergistic sterilization.

[0011] Figure 2 This is a schematic diagram of the top surface structure of the inner cavity of the box in Example 1.

[0012] Figure 3 This is a schematic diagram of the bottom surface structure of the inner cavity of the box in Example 1.

[0013] Figure 4 This is a schematic diagram of the installation of the lamp tube and the slider.

[0014] The components are: 1-box body, 11-protruding strip, 12-culture dish plate, 13-box door, 14-sealed glass, 2-ring slide rail, 21-ring conductive contact, 22-slider, 23-connecting rod, 3-lamp tube, 31-protective tube, 32-motor, 33-sealing ring, 4-ozone generator, 5-catalytic decomposition module, 6-rotating platform, 61-stepper motor, 62-reflector. Detailed Implementation

[0015] Example 1: A pollution-proof constant temperature incubator based on dynamic ultraviolet and ozone synergistic sterilization includes a chamber body 1. An aluminum alloy annular slide rail 2 is installed on the top of the chamber's inner cavity. Annular conductive contacts 21 are provided on the surface of the annular slide rail 2. Eight short-wave ultraviolet lamps 3 with a wavelength of 254nm are installed at equal intervals on the annular slide rail via sliders 22. The lamps 3 are installed at a 45° angle and are covered by quartz glass protective tubes 31. Both ends are fixed by silicone sealing rings 33. Conductive contacts are provided on the sliders 22. All sliders 22 are connected to the output shaft of a motor 32 via connecting rods 23. The motor 32 drives the sliders 22 to move uniformly along the annular slide rail 2 and is powered through the conductive contacts. An ozone generator 4 and a catalytic decomposition module 5 are installed beside the annular slide rail 2. The catalytic decomposition module 5 contains a composite filter element of MnO2 and activated carbon. A stepper motor 61 is installed in the center of the bottom of the inner cavity of the box. The output shaft of the stepper motor 61 is connected to the center of the rotating platform 6 through a rotating shaft. The stepper motor 61 drives the rotating platform 6 to rotate. An arc-shaped stainless steel reflector 62 is fixed to the edge of the rotating platform 6. The surface of the reflector 62 is designed with a prism texture. The stepper motor 61 rotates synchronously with the motor.

[0016] An electric heating box is installed on the left side of box 1.

[0017] Several pairs of parallel convex strips 11 are provided on both sides of the inner cavity of the box body 1. The culture dish plate 12 is movably installed in the box body 1 through the convex strips 11. The culture dish plate 12 has a honeycomb mesh structure.

[0018] The front of the chamber has a door 13, and a sealed glass 14 is installed in the middle of the door 13. When observing the bacterial strains, observation can be done directly through the sealed glass 14 without opening the door 13 for observation and recording. Frequent opening of the door 13 will also cause heat loss inside the chamber 1, allowing bacteria in the air to enter the chamber 1, which will also affect the temperature and make the culture results inaccurate. Therefore, observation through the sealed glass 14 prevents the microorganisms from being contaminated by the outside.

[0019] In use, the petri dish plate 12 is installed on the protrusions 11 on both sides of the inner cavity of the chamber 1, and the position is adjusted to meet the experimental requirements. The speed of the motor 32 and the stepper motor 61 is set so that the lamp tube 3 and the rotating platform 6 run at the same speed. The dynamic lamp tube 3 and the ozone generator 4 are started. The lamp tube 3 moves at a constant speed along the annular slide rail 2, and the ozone is evenly diffused into the inner cavity. The rotating platform 6 drives the reflector 62 to rotate, reflecting ultraviolet rays to the dead corner area, thus synergistically enhancing the sterilization effect. After sterilization is completed, the lamp tube 3 is turned off, and the catalytic decomposition module 5 reduces the ozone concentration to below the safe threshold.

Claims

1. A constant temperature incubator based on dynamic ultraviolet light and ozone synergistic sterilization, characterized in that: The system includes a housing with an aluminum alloy annular slide rail mounted on the top of the inner cavity. Conductive contacts are provided on the surface of the slide rail. Six to eight short-wave ultraviolet lamps are installed at equal intervals on the slide rail via sliders, with the lamps installed at a 45° angle. Each lamp is covered by a quartz glass protective tube, and both ends are secured with silicone sealing rings. Conductive contacts are also provided on the sliders. All sliders are connected to the output shaft of a motor via connecting rods. The motor drives the sliders to move uniformly along the annular slide rail and supplies power through the conductive contacts. An ozone generator and a catalytic decomposition module are installed next to the annular slide rail. The catalytic decomposition module contains a composite filter element of MnO2 and activated carbon. A stepper motor is installed at the center of the bottom of the inner cavity. The output shaft of the stepper motor is connected to the center of a rotating platform via a shaft. The stepper motor drives the rotating platform to rotate. An arc-shaped stainless steel reflector with a prismatic texture is fixed to the edge of the rotating platform.

2. The constant temperature incubator based on dynamic ultraviolet light and ozone synergistic sterilization as described in claim 1, characterized in that... The ultraviolet wavelength of the short-wave ultraviolet lamp is 254nm.

3. The constant temperature incubator based on dynamic ultraviolet light and ozone synergistic sterilization as described in claim 1, characterized in that... Several pairs of parallel convex strips are provided on both sides of the inner cavity of the box. The culture dish plate is movably installed in the box through the convex strips. The culture dish plate has a honeycomb mesh structure.

4. A constant temperature incubator based on dynamic ultraviolet light and ozone synergistic sterilization as described in claim 1, characterized in that... The box body is equipped with a door on the front side, and a sealed glass door is provided in the middle of the door.

Images