A sterilization control system based on the combination of plasma and ozone

Abstract

The present invention discloses a sterilization control system based on the combination of plasma and ozone, which includes a main control module connected to an ozone generation module for controlling the ozone generation amount of the ozone generation module to reach a first preset threshold according to the basic information of the cleaning object; a diffusion device connected to the main control module for uniformly mixing the ozone generated by the ozone generation module with water; the main control module is connected to a non-equilibrium plasma module for controlling the amount of low-temperature plasma generated by the non-equilibrium plasma module to reach a second preset threshold according to the basic information of the cleaning object to clean the cleaning object; the main control module is connected to an ozone concentration detection module for starting the non-equilibrium plasma module and adjusting the output voltage and output current according to the real-time ozone concentration when the detected real-time ozone concentration reaches the standard consumption threshold, so that the power density of the non-equilibrium plasma module is 0.5 W / cm<supgt;3< / supgt> - 2 W / cm<supgt;3< / supgt>. The present invention can achieve a sterilization and purification effect and extend the food preservation period.

Description

Technical Field

[0001] The present invention relates to the technical field of sterilization and purification equipment, and particularly to a sterilization control system based on the combination of plasma and ozone. Background Art

[0002] With the improvement of people's living standards and quality, more and more people choose to buy a cleaning machine for fruits, vegetables, etc. to perform sterilization cleaning. On the one hand, it degrades toxic substances such as residual pesticides in vegetables and fruits, and on the other hand, foods such as cleaned items and meats after cleaning can extend the shelf life. Existing cleaning machines for cleaning items solely adopt technologies such as ultraviolet sterilization, ozone sterilization, or plasma sterilization, or also add ultrasonic technology to remove surface impurities.

[0003] Ozone is a strong oxidant and is mainly used for disinfection when dissolved in water. However, too high a concentration makes the water have a strong disinfection smell, which has a certain impact on the user's sensory experience. Plasma, compared with ozone, also has the function of extending the preservation time. And as the temperature rises, it is beneficial to the decomposition of ozone. Ozone can be inhibited by coordinating with the working temperature of plasma. For this reason, the present invention proposes a sterilization control method with both ozone and plasma. Summary of the Invention

[0004] In order to overcome the above-mentioned drawbacks of the prior art, the purpose of the present invention is to provide a sterilization control system based on the combination of plasma and ozone.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a sterilization control system based on the combination of plasma and ozone, including an ozone generation module, a non-equilibrium plasma module, a diffusion device, an ozone concentration detection module, and a main control module;

[0006] The main control module is connected to the ozone generation module and is used to control the ozone generation amount of the ozone generation module to reach a first preset threshold according to the basic information of the cleaning item;

[0007] The diffusion device is connected to the main control module and is used to mix the ozone generated by the ozone generation module with water evenly to clean the cleaning item;

[0008] The main control module is connected to the non-equilibrium plasma module and is used to control the amount of low-temperature plasma generated by the non-equilibrium plasma module to reach a second preset threshold according to the basic information of the cleaning item to clean the cleaning item;

[0009] The main control module is connected to the ozone concentration detection module and is used to start the non-equilibrium plasma module and adjust the output voltage and output current according to the real-time ozone concentration when the detected real-time ozone concentration reaches the standard consumption threshold, so that the power density of the non-equilibrium plasma module is 0.5W / cm 3 -2 W / cm 3 .

[0010] As a further improvement of the present invention: The ozone generation module includes an air pump, an ozone generator, a fan and an exhaust pipe. The air outlet of the air pump is connected to the ozone generator for sucking in outside air and pressing it into the ozone generator; the air outlet of the ozone generator is connected to the exhaust pipe, and the fan is used to release the generated ozone to the position of the diffusion device through the exhaust pipe.

[0011] As a further improvement of the present invention: The diffusion device includes a rotating motor and a turntable. A plurality of nozzles are provided on the turntable, and the exhaust pipe is connected to the turntable.

[0012] As a further improvement of the present invention: The main control module is respectively connected to the air pump and the fan. The main control module respectively adjusts the air intake of the air pump and the rotation speed of the fan according to the ozone generation amount. Among them, the air intake of the air pump or the rotation speed of the fan has a positive correlation with the ozone generation amount.

[0013] As a further improvement of the present invention: The main control module is also used to adjust the rotation speed and running time of the rotating motor according to the ozone generation amount and the cleaning time.

[0014] As a further improvement of the present invention: It further includes: The main control module also adjusts the working voltage of the ozone generator in real time according to the real-time ozone concentration sent by the ozone concentration detection module.

[0015] As a further improvement of the present invention: The non-equilibrium plasma module includes a ground electrode and a drive power supply. The main control module calculates the required output power of the non-equilibrium plasma module according to the exposed area of the ground electrode, and then adjusts the output voltage and input current of the non-equilibrium plasma module. Among them, the output voltage of the non-equilibrium plasma module has a positive correlation with the real-time ozone concentration.

[0016] As a further improvement of the present invention: The basic information of the cleaning object includes the type and quantity of the cleaning object. The main control module determines the first preset threshold corresponding to the ozone generation amount of the ozone generator according to the type and quantity of the cleaning object, and confirms the second preset threshold and the discharge time corresponding to the amount of low-temperature plasma required to be generated by the non-equilibrium plasma module.

[0017] As a further improvement of the present invention: It further includes a heating module. The ozone concentration detection module is provided with an ozone concentration sampling circuit. The main control module is also used to when the ozone concentration detection module detects that the real-time ozone concentration exceeds the standard concentration preset threshold, not start the non-equilibrium plasma module. The main control module controls the heating module to work to increase the water temperature and increase the rotation speed of the rotating motor until the real-time ozone concentration is lower than the standard concentration preset threshold.

[0018] As a further improvement of the present invention, it further includes a smoke alarm module, and the smoke alarm module is connected to the main control module.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The present invention generates ozone through an ozone generation module, uses a diffusion device to fully disperse and mix ozone evenly with water, and makes full contact with the cleaning object to achieve a sterilization effect. At the same time, the non-equilibrium plasma module generates low-temperature plasma diffusion to make full contact with water and the surrounding air, achieving a sterilization and purification effect.

[0021] The present invention controls the ozone generation amount within the first preset threshold, just achieving the sterilization effect, avoiding a strong disinfectant smell after the concentration is too high and dissolves in water, which affects the user's sensory experience. In addition, the freshness preservation time of the cleaning object is extended by using low-temperature plasma, and the output voltage of the non-equilibrium plasma module is adjusted according to the real-time ozone concentration to increase the working temperature to quickly decompose the remaining ozone, and at the same time, the generated low-temperature plasma further sterilizes and disinfects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a logic schematic diagram of a sterilization control system based on the combination of plasma and ozone of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the main control module of the present invention.

[0024] Figure 3 It is a control electrical connection schematic diagram of the fan, ozone generator, rotary motor and air pump of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the specific embodiments and corresponding drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] To solve the technical problems in the prior art, the present invention will be further described below in conjunction with the drawings and embodiments:

[0027] As Figures 1 - 3 shown, the present invention discloses a sterilization control system based on the combination of plasma and ozone, including an ozone generation module, a non-equilibrium plasma module, a diffusion device, an ozone concentration detection module and a main control module;

[0028] The main control module is connected to the ozone generation module and is used to control the ozone generation amount of the ozone generation module to reach a first preset threshold according to the basic information of the object to be cleaned;

[0029] The diffusion device is connected to the main control module and is used to mix the ozone generated by the ozone generation module with water evenly to clean the object to be cleaned;

[0030] The main control module is connected to the non-equilibrium plasma module and is used to control the amount of low-temperature plasma generated by the non-equilibrium plasma module to reach a second preset threshold according to the basic information of the object to be cleaned, so as to clean the object to be cleaned;

[0031] The main control module is connected to the ozone concentration detection module. When the detected real-time ozone concentration reaches the standard consumption threshold, the non-equilibrium plasma module is started and the output voltage and output current are adjusted according to the real-time ozone concentration, so that the power density of the non-equilibrium plasma module is 0.5W / cm 3 -2 W / cm 3 .

[0032] In the present invention, the ozone generation amount is controlled within the first preset threshold, just reaching the sterilization effect, avoiding the generation of a strong disinfected water smell after the concentration is too high and dissolved in water, which affects the user's sensory experience. In addition, when the real-time ozone concentration reaches the standard consumption threshold, that is, when the real-time ozone concentration is consumed and does not have the best sterilization effect, the non-equilibrium plasma module is started to generate low-temperature plasma to further sterilize and disinfect. At the same time, the low-temperature plasma is used to extend the preservation time of the object to be cleaned. The output voltage of the non-equilibrium plasma module is also adjusted according to the real-time ozone concentration, so that the working temperature is increased to quickly decompose the remaining ozone.

[0033] As is well known, the higher the temperature, the more conducive to the decomposition of ozone. The working temperature of the discharge process of the non-equilibrium plasma module increases, and the output voltage is positively correlated with the electron temperature of the plasma. By adjusting the output voltage, the working temperature of the non-equilibrium plasma module is increased to decompose the remaining ozone, and at the same time, the re-generation of ozone is inhibited, avoiding the combination of ozone and water to produce a strong disinfected smell.

[0034] The low-temperature plasma forms plasma-activated water after mixing with water and is used for sterilizing and disinfecting the object to be cleaned. The low-temperature plasma contains active substances such as hydrogen peroxide, nitrate ions and hydroxyl radicals. The low-temperature plasma is used for cleaning fruits and vegetables, meats, etc., and can achieve good sterilization and disinfection effects, and has the effect of extending the preservation period of fruits and vegetables, meats, etc., and also has the function of air sterilization.

[0035] Preferably, the ozone generation module includes an air pump 3, an ozone generator 1, a fan 2 and an exhaust pipe. The air outlet of the air pump 3 is connected to the ozone generator 1 for sucking in outside air and pressing it into the ozone generator 1. The air outlet of the ozone generator 1 is connected to the exhaust pipe, and the fan 2 is used to release the generated ozone to the position of the diffusion device through the exhaust pipe.

[0036] The ozone generated by the ozone generation module can oxidize and decompose the enzymes required for the internal glucose of bacteria, inactivating and killing the bacteria; directly act on bacteria and viruses, destroying their cell organelles, DNA, and RNA, disrupting the metabolism of bacteria, and causing the death of bacteria; penetrate the cell membrane tissue, invade the cell, act on the lipoprotein of the outer membrane and the lipopolysaccharide inside, causing the bacteria to undergo permeability distortion and dissolve and die.

[0037] More preferably, the main control module is respectively connected to the air pump 3 and the fan 2. The main control module adjusts the air intake of the air pump 3 and the rotation speed of the fan 2 according to the ozone generation amount. Among them, the air intake of the air pump 3 or the rotation speed of the fan 2 has a positive correlation with the ozone generation amount.

[0038] Preferably, the diffusion device includes a rotary motor 4 and a turntable. A plurality of spray nozzles are provided on the turntable, and the exhaust pipe is connected to the turntable.

[0039] The present invention generates ozone through the ozone generation module, uses the rotary motor 4 and the turntable to fully disperse the ozone and mix it evenly with water, and fully contacts the cleaning object to achieve a sterilization effect. At the same time, the non-equilibrium plasma module generates low-temperature plasma diffusion and fully contacts the water and the surrounding air to achieve a sterilization and purification effect.

[0040] As Figure 2 and Figure 3 shown, Figure 2 provides a schematic diagram of the control electrical connection of the fan 2, the ozone generator 1, the rotary motor 4 and the air pump 3 and Figure 3 provides a schematic diagram of the structure of the main control module.

[0041] More preferably, the main control module is further used to adjust the rotation speed and running time of the rotary motor 4 according to the ozone generation amount and the cleaning time.

[0042] The present invention adjusts the rotation speed of the rotary motor according to the ozone generation amount to ensure that the ozone overflowing from the spray holes of the turntable is fully diffused, mixed evenly with water, and then fully contacts the cleaning object to achieve a better sterilization effect. The running time of the rotary motor is determined according to the cleaning time of the cleaning object. The main control module prestores the rotation speed and running time of the rotary motor that need to be matched for different ozone generation amounts. There is a certain ratio relationship between the running time and the cleaning time.

[0043] More preferably, it further includes: the main control module also adjusts the working voltage of the ozone generator 1 in real time according to the real-time ozone concentration sent by the ozone concentration detection module.

[0044] The present invention also determines whether the preset sterilization standard is reached through the real-time ozone concentration. When the real-time ozone concentration does not reach the standard concentration threshold within the set time, it is necessary to adjust the working voltage of the ozone generator to increase the rate of ozone generation.

[0045] More preferably, the non-equilibrium plasma module includes a ground electrode and a drive power supply. The main control module calculates the required output power of the non-equilibrium plasma module according to the exposed area of the ground electrode, and then adjusts the output voltage and input current of the non-equilibrium plasma module. Among them, the output voltage of the non-equilibrium plasma module has a positive correlation with the real-time ozone concentration.

[0046] More preferably, the basic information of the cleaning object includes the type and quantity of the cleaning object. The main control module determines the first preset threshold corresponding to the ozone generation amount of the ozone generator, and confirms the second preset threshold and the discharge time corresponding to the amount of low-temperature plasma required to be generated by the non-equilibrium plasma module according to the type and quantity of the cleaning object.

[0047] It should be noted that the main control module is pre-set with the weight and quantity of different cleaning objects, the corresponding ozone generation amount and low-temperature plasma amount required, so as to determine the working parameters of the ozone generator and the discharge time of the non-equilibrium plasma module.

[0048] As another preferred embodiment of the present invention, it further includes a heating module. The ozone concentration detection module is provided with an ozone concentration sampling circuit. The main control module is also used to not start the non-equilibrium plasma module when the ozone concentration detection module detects that the real-time ozone concentration exceeds the preset standard concentration threshold. The main control module controls the heating module to work to increase the water temperature and increase the rotation speed of the rotary motor until the real-time ozone concentration is lower than the preset standard concentration threshold.

[0049] Preferably, it further includes a smoke alarm module, and the smoke alarm module is connected to the main control module. When the ozone generation module, the non-equilibrium plasma module, the diffusion device, etc. fail, an alarm signal is sent to the user.

[0050] It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0051] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A sterilization control system based on the combination of plasma and ozone, characterized in that, It includes an ozone generation module, a non-equilibrium plasma module, a diffusion device, an ozone concentration detection module, and a main control module; The main control module is connected to the ozone generation module and is used to control the ozone generation amount of the ozone generation module to reach a first preset threshold according to the basic information of the object to be cleaned; The diffusion device is connected to the main control module and is used to mix the ozone generated by the ozone generation module with water evenly to clean the object to be cleaned; The main control module is connected to the non-equilibrium plasma module and is used to control the amount of low-temperature plasma generated by the non-equilibrium plasma module to reach a second preset threshold according to the basic information of the object to be cleaned, so as to clean the object to be cleaned; The main control module is connected to the ozone concentration detection module, and is used to start the non-equilibrium plasma module and adjust the output voltage and output current according to the real-time ozone concentration when the detected real-time ozone concentration reaches the standard consumption threshold, so that the power density of the non-equilibrium plasma module is 0.5 W / cm 3 -2 W / cm 3 ; The ozone generation module includes an air pump, an ozone generator, a fan and an exhaust pipe. The air outlet of the air pump is connected to the ozone generator for sucking in external air and pressing it into the ozone generator; the air outlet of the ozone generator is connected to the exhaust pipe, and the fan is used to release the generated ozone to the position of the diffusion device through the exhaust pipe. The main control module also adjusts the working voltage of the ozone generator in real time according to the real-time ozone concentration sent by the ozone concentration detection module. The non-equilibrium plasma module includes a ground electrode and a drive power supply. The main control module calculates the output power required by the non-equilibrium plasma module according to the exposed area of the ground electrode, and then adjusts the output voltage and input current of the non-equilibrium plasma module. Among them, the output voltage of the non-equilibrium plasma module has a positive correlation with the real-time ozone concentration.

2. The sterilization control system based on the combination of plasma and ozone according to claim 1, characterized in that, The diffusion device includes a rotating motor and a turntable. A plurality of nozzles are provided on the turntable, and the exhaust pipe is connected to the turntable.

3. A sterilization control system based on the combination of plasma and ozone according to claim 1, characterized in that, The main control module is respectively connected to the air pump and the fan. The main control module adjusts the intake air volume of the air pump and the rotation speed of the fan according to the ozone generation amount. Among them, the intake air volume of the air pump or the rotation speed of the fan has a positive correlation with the ozone generation amount.

4. A sterilization control system based on the combination of plasma and ozone according to claim 2, characterized in that, The main control module is also used to adjust the rotation speed and operation time of the rotating motor according to the ozone generation amount and the cleaning time.

5. A sterilization control system based on the combination of plasma and ozone according to claim 1, wherein, The basic information of the object to be cleaned includes the type and quantity of the object to be cleaned. The main control module determines the first preset threshold corresponding to the ozone generation amount of the ozone generator, and confirms the second preset threshold and the discharge time corresponding to the amount of low-temperature plasma required to be generated by the non-equilibrium plasma module according to the type and quantity of the object to be cleaned.

6. The sterilization control system based on the combination of plasma and ozone according to claim 2, wherein It further includes a heating module. The ozone concentration detection module is provided with an ozone concentration sampling circuit. The main control module is also used to not start the non-equilibrium plasma module when the ozone concentration detection module detects that the real-time ozone concentration exceeds the preset standard concentration threshold. The main control module controls the heating module to work to increase the water temperature and increase the rotation speed of the rotating motor until the real-time ozone concentration is lower than the preset standard concentration threshold.

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