A low-temperature hydrogen peroxide vaporization generator and a sterilization system including the generator.

Abstract

This utility model relates to a low-temperature hydrogen peroxide vaporization generator, including a vacuum generator and a vaporization chamber. The vaporization chamber is connected to the vacuum generator via an adapter. The vacuum generator has an inlet and an outlet. The vaporization chamber is equipped with at least two nozzles, and a heating rod extends into the interior of the vaporization chamber. Within the vaporization chamber, spiral fins are fitted onto the outside of the heating rod, forming a spiral cavity inside the vaporization chamber. A heating coil is also provided on the outside of the vaporization chamber. This utility model combines a vacuum generator with a vaporization chamber. The non-high-temperature operation of the vaporization chamber reduces the decomposition rate of hydrogen peroxide, and the sterilization process does not involve temperature increases, allowing for better compatibility with heat-sensitive materials and avoiding damage. The gas particles generated by the three-stage vaporization have good uniformity, achieving nanoscale penetration, and have a large atomization volume, meeting the rapid sterilization needs of large spaces.

Description

Technical Field

[0001] This utility model relates to the field of vaporized hydrogen peroxide sterilization equipment, and in particular to a low-temperature hydrogen peroxide vaporization generator and a sterilization system including the generator. Background Technology

[0002] In vaporized hydrogen peroxide sterilization technology, the key to the success of the entire sterilization process is to effectively convert liquid hydrogen peroxide into a gaseous or submicron-sized aerosol state that can be uniformly diffused and has strong sterilization activity. It is commonly used for sterilization in enclosed spaces in industries such as pharmaceuticals, medical care, and food.

[0003] Currently, existing vaporized hydrogen peroxide sterilization systems generally have the following problems: Because liquid H2O2 needs to absorb a large amount of heat energy instantly to completely vaporize, and the high vaporization temperature intensifies the thermal decomposition of hydrogen peroxide, the sterilization environment will be heated, which will cause irreversible damage to heat-sensitive materials.

[0004] The atomized particles are relatively large, and due to gravity, they settle rapidly, making it difficult to uniformly cover high-altitude areas or complex structures, thus creating sterilization dead zones. In addition, the large particles have a small specific surface area, and they evaporate into a gaseous state slowly at room temperature. This results in the coexistence of "droplet state" and "gas state" in the space, reducing the effective gaseous concentration.

[0005] Because the vibration area of ​​the piezoelectric ceramic transducer is limited, the volume of H2O2 solution that can be atomized per unit time is relatively small, resulting in a small atomization amount, which is difficult to meet the needs of rapid sterilization in large spaces. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a low-temperature hydrogen peroxide vaporization generator and a sterilization system including the generator, so as to solve one or more problems in the prior art.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A low-temperature hydrogen peroxide vaporization generator includes a vacuum generator and a vaporization chamber. The vaporization chamber is connected to the vacuum generator via an adapter. The vacuum generator has an inlet and an outlet. The vaporization chamber is provided with at least two nozzles, and a heating rod extends into the interior of the vaporization chamber. Inside the vaporization chamber, spiral fins are sleeved on the outside of the heating rod, forming a spiral cavity inside the vaporization chamber. A heating coil is also provided on the outside of the vaporization chamber.

[0008] Furthermore, a temperature sensor and a humidity sensor are respectively installed on the outside of the vaporization chamber.

[0009] Furthermore, the heating coil is a circular structure arranged around the outside of the vaporization chamber along the circumferential direction.

[0010] Furthermore, the heating coil has an opening along the axial direction, and near the opening, a column is provided on the edge of the heating coil near the opening, and a mounting hole is provided on each column.

[0011] Furthermore, a vacuum sensor is also installed on the vacuum generator.

[0012] Accordingly, this utility model also provides a sterilization system, which includes the aforementioned low-temperature hydrogen peroxide vaporization generator. The sterilization system further includes a first solenoid valve and a second solenoid valve. The inlet end of the first solenoid valve is connected to a first pipeline, and the outlet end of the first solenoid valve is connected to an air inlet through a second pipeline. The first pipeline is also connected to a third pipeline, and the end of the third pipeline away from the first pipeline is connected to the inlet end of the second solenoid valve. The outlet end of the second solenoid valve is connected to a nozzle through a fourth pipeline.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This invention combines a vacuum generator with a vaporization chamber. The non-high-temperature vaporization of the vaporization chamber reduces the decomposition rate of hydrogen peroxide. Since the vaporization temperature of liquid hydrogen peroxide at normal pressure is above 108°C, the boiling point of the liquid will decrease under negative pressure or vacuum. Furthermore, since the temperature of the output sterilizing gas can be controlled by a temperature sensor, it can be ensured that the sterilization process does not heat up, which can better accommodate heat-sensitive materials and avoid damage to them. The gas particles generated by the three-stage vaporization have good uniformity and can achieve nanoscale penetration. Its atomization volume is large, which can meet the needs of rapid sterilization in large spaces. Attached Figure Description

[0014] Figure 1 A schematic diagram of a low-temperature hydrogen peroxide gasification generator according to an embodiment of the present invention is shown.

[0015] Figure 2 A top view of a low-temperature hydrogen peroxide vaporization generator and a sterilization system including the generator, according to an embodiment of the present invention, is shown.

[0016] Figure 3 The diagram shows a low-temperature hydrogen peroxide vaporization generator and a heating rod and heating coil in a sterilization system including the generator, according to an embodiment of the present invention.

[0017] Figure 4 The diagram shows a low-temperature hydrogen peroxide vaporization generator and a sterilization system including the generator, according to an embodiment of the present invention.

[0018] The following labels are used in the attached diagram: 1. Vacuum generator; 2. Outlet; 3. Vacuum sensor; 4. Inlet; 5. Adapter; 6. Humidity sensor; 7. Vaporization chamber; 8. Heating coil; 9. Fastener; 900. Opening; 901. Column; 902. Mounting hole; 10. Nozzle; 11. Heating rod; 12. Temperature sensor; 13. Spiral fin; 14. First solenoid valve; 15. Second solenoid valve; 17. First pipeline; 18. Second pipeline; 19. Third pipeline; 20. Fourth pipeline; 21. Liquid inlet solenoid valve; 22. Liquid inlet branch. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a low-temperature hydrogen peroxide vaporization generator and a sterilization system including the generator. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 The low-temperature hydrogen peroxide vaporization generator includes a vacuum generator 1 and a vaporization chamber 7. The vaporization chamber 7 is connected to the vacuum generator 1 via an adapter. The vacuum generator 1 has an inlet 4 and an outlet 2. The vaporization chamber 7 is equipped with at least two nozzles 10, and a heating rod 11 extends into the interior of the vaporization chamber 7. Inside the vaporization chamber 7, spiral fins 13 are also sleeved on the outside of the heating rod 11. The spiral fins 13 form a spiral chamber inside the vaporization chamber 7, which increases the effective evaporation area and thus improves the evaporation efficiency. Please continue to refer to... Figure 1 , Figure 2 and Figure 3 A heating coil 8 is also installed on the outside of the gasification chamber 7.

[0021] Please refer to Figure 1 and Figure 2The vacuum generator 1 is an aluminum alloy multi-stage vacuum generator with an intake flow rate of 940 L / min to 1000 L / min, an intake pressure of 5 bar to 10 bar, and a vacuum level of 95 kPa to 101 kPa. The intake pipe diameter of its intake port 4 is φ10 to φ16. A vacuum sensor 3 is also installed on the vacuum generator 1. This sensor monitors vacuum data in real time and can trigger an alarm when the vacuum level drops below -90 kPa.

[0022] For further information, please refer to the following: Figure 1 , Figure 2 and Figure 3 A temperature sensor 12 and a humidity sensor 6 are respectively installed on the outside of the vaporization chamber 7. The temperature sensor 12 is used to monitor the temperature inside the vaporization chamber 7, and the humidity sensor 6 is used to monitor the humidity inside the vaporization chamber 7.

[0023] For further details, please refer to... Figure 1 and Figure 2 The heating ring 8 is a circular structure arranged around the outer side of the vaporization chamber 7 along the circumferential direction. An opening 900 is formed along the axial direction of the heating ring 8. Near the opening 900, pillars 901 are respectively set on the edge of the heating ring 8 near the opening 900, and mounting holes 902 are formed on each pillar 901. Specifically, the vaporization chamber 7 is made of cast aluminum of A356.2 material. The vaporization chamber 7 can provide a negative pressure of 90kPa to 95kPa, its temperature can be controlled at 50±5℃, its humidity can be controlled to not exceed 25%, and its evaporation area is 0.04㎡. The heating ring 8 uses a mica heating element, which is attached to the outer side of the vaporization chamber 7. The temperature control signal collected by the temperature sensor 12 is transmitted to the heating control circuit of the heating ring 8 through an external PLC system, thereby achieving precise temperature control of the heating ring 8. Simultaneously, the aforementioned temperature sensor can accurately control the temperature when the sterilizing gas is input, ensuring that the sterilization temperature is consistent with the set temperature, thus achieving no temperature rise during the sterilization process. PLC systems are existing technology, and this utility model will not elaborate further.

[0024] Accordingly, this utility model also provides a sterilization system, which includes the aforementioned low-temperature hydrogen peroxide vaporization generator. The sterilization system also includes a first solenoid valve 14 and a second solenoid valve 15. The inlet end of the first solenoid valve 14 is connected to the first pipeline 17, and the outlet end of the first solenoid valve 14 is connected to the air inlet 4 through the second pipeline 18. The first pipeline 17 is also connected to the third pipeline 19. The end of the third pipeline 19 away from the first pipeline 17 is connected to the inlet end of the second solenoid valve 15, and the outlet end of the second solenoid valve 15 is connected to the nozzle 10 through the fourth pipeline 20.

[0025] For details, please refer to Figure 4The first pipeline 17 is used to supply stable clean compressed air at a pressure of 5 bar, a flow rate of 1000 L / min, and a temperature of 25°C. A liquid inlet branch 22 is also connected to the fourth pipeline 20, with its inlet end connected to a liquid inlet solenoid valve 21. The second pipeline 18 acts on the vacuum generator 1, providing an effective vacuum to the vaporization chamber 7. The third pipeline 19 delivers clean compressed air through the second solenoid valve 15, while the liquid medicine enters the fourth pipeline 20 through the liquid inlet solenoid valve 21 and the liquid inlet branch 22. The compressed air, through the air passage of the nozzle 20, breaks up the siphoned liquid medicine, forming a 5-10 μm atomized vapor that is then sent into the vaporization chamber 7. This atomized vapor is also referred to as primary vaporization. After vaporization, the disinfectant gas enters the vacuum generator 1 through the adapter 5 and is mixed with the gas inside the vacuum generator 1. The mixing process involves the gas source mixing with the atomized gas and vaporizing at low temperature inside the vacuum generator 1 to form secondary vaporization. The gas in the secondary vaporization undergoes Venturi accelerated mixing and vaporization in the vacuum generator 1 to form tertiary vaporization. Finally, it is delivered to the equipment or environment that needs to be sterilized through the outlet 2.

[0026] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A low temperature hydrogen peroxide gas generator characterized by: The device includes a vacuum generator and a vaporization chamber. The vaporization chamber is connected to the vacuum generator via an adapter. The vacuum generator has an air inlet and an air outlet. The vaporization chamber is provided with at least two nozzles, and a heating rod extends into the interior of the vaporization chamber. Inside the vaporization chamber, spiral fins are also sleeved on the outside of the heating rod, and the spiral fins form a spiral cavity inside the vaporization chamber. A heating coil is also provided on the outside of the vaporization chamber.

2. A cryogenic hydrogen peroxide gas generator as claimed in claim 1, characterized in that: Temperature and humidity sensors are installed on the outside of the vaporization chamber.

3. A cryogenic hydrogen peroxide gas generator as defined in claim 1, wherein: The heating coil is a circular structure arranged around the outside of the vaporization chamber along the circumferential direction.

4. A cryogenic hydrogen peroxide gas generator as claimed in claim 3, characterized in that: The heating coil has an opening along the axial direction. Near the opening, a column is provided on the edge of the heating coil near the opening, and a mounting hole is provided on each column.

5. A cryogenic hydrogen peroxide gas generator as defined in claim 1, wherein: A vacuum sensor is also installed on the vacuum generator.

6. A sterilization system characterized by: The sterilization system includes a low-temperature hydrogen peroxide vaporization generator as described in any one of claims 1 to 5. The sterilization system further includes a first solenoid valve and a second solenoid valve. The inlet end of the first solenoid valve is connected to a first pipeline, and the outlet end of the first solenoid valve is connected to an air inlet through a second pipeline. The first pipeline is also connected to a third pipeline. The end of the third pipeline away from the first pipeline is connected to the inlet end of the second solenoid valve, and the outlet end of the second solenoid valve is connected to a nozzle through a fourth pipeline.

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