A small low temperature hydrogen peroxide vaporization sterilizer

Abstract

This utility model discloses a small low-temperature hydrogen peroxide vaporization sterilizer, including a shell. The shell includes an upper shell, a liquid storage box connected to the bottom of the upper shell, and a lower shell connected to the bottom of the liquid storage box. An air outlet is provided at the center of the top of the upper shell, and a micro impeller is installed at the center of the top of the air outlet. A Venturi jet is fixed at the center of the interior of the upper shell. The mixing outlet and the air outlet of the Venturi jet are connected. Feeding ports are connected to both sides of the negative pressure zone of the Venturi jet and are located inside the upper shell. Ultrasonic atomizers are installed on both sides of the bottom of the liquid storage box. Compared with traditional fixed or trolley-type equipment, this device eliminates the need for a large-capacity liquid storage tank and a high-power fan, significantly reducing its size and weight. It is easy to deploy in narrow spaces such as small laboratory workbenches and equipment cavities, and is also suitable for multi-point sterilization scenarios.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydrogen peroxide vaporization sterilizers, specifically relating to a small low-temperature hydrogen peroxide vaporization sterilizer. Background Technology

[0002] Low-temperature hydrogen peroxide (VHP) vaporization sterilization technology has become an important sterilization method in fields such as medical devices, biosafety laboratories, and pharmaceutical clean areas due to its advantages such as high efficiency, broad spectrum, low-temperature drying, low residue, and good material compatibility. Its core lies in converting liquid hydrogen peroxide into a vaporized state, allowing it to diffuse evenly and act on microorganisms to achieve sterilization.

[0003] Currently, most low-temperature hydrogen peroxide vaporization sterilization equipment on the market is either stationary or trolley-type. While it possesses a certain sterilization efficiency, existing equipment typically integrates large-capacity storage tanks, vaporization units, high-power fans, etc., resulting in a bulky and cumbersome overall structure. This not only increases the difficulty of deploying the equipment in confined spaces (such as small laboratory workbenches, inside specific equipment chambers, or temporary isolation areas) but also limits its application flexibility in scenarios requiring mobile use (such as multi-point rapid processing and on-site emergency response). Furthermore, the vaporized hydrogen peroxide output ports (nozzles or spray nozzles) of most equipment are designed with a fixed orientation or only have limited angle adjustment capabilities. This design causes the released hydrogen peroxide gas to diffuse mainly along a preset direction, resulting in limited sterilization effectiveness. Especially in cases where the internal structure of the processing chamber is complex or where multiple surfaces need to be sterilized simultaneously, its spatial adaptability and sterilization uniformity are severely constrained.

[0004] Therefore, this utility model proposes a small low-temperature hydrogen peroxide vaporization sterilizer, which can significantly improve the portability of the equipment while maintaining the high-efficiency sterilization characteristics of low-temperature hydrogen peroxide, and endow it with the ability to dynamically adjust the sterilization direction, especially to achieve 360-degree all-round rotation spray, ensuring a more thorough and reliable sterilization effect. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a small low-temperature hydrogen peroxide vaporization sterilizer, comprising a shell, the shell including an upper shell, a liquid storage box connected to the bottom of the upper shell, a lower shell connected to the bottom of the liquid storage box, an air outlet at the center of the top of the upper shell, a micro impeller installed at the center of the top of the air outlet, a Venturi jet fixed at the center inside the upper shell, the mixing outlet and the air outlet of the Venturi jet being connected, feeding ports connected to both sides of the negative pressure zone of the Venturi jet, the feeding ports being located inside the upper shell, ultrasonic atomizers installed on both sides of the bottom of the liquid storage box, an air pump installed inside the lower shell, an air outlet pipe connected to the air outlet end of the air pump, and the air inlet of the Venturi jet being connected to the end of the air outlet pipe.

[0006] As a preferred embodiment of this utility model, the air outlet, the micro impeller, and the Venturi jet are arranged in a collinear manner.

[0007] As a preferred embodiment of this utility model, the diameter of the air outlet gradually increases from the inner side to the outer side of the upper shell.

[0008] As a preferred embodiment of this utility model, the top of the micro impeller is rotatably connected to a bracket, and the two ends of the bracket are fixed to the upper housing.

[0009] As a preferred embodiment of this utility model, the mixing outlet of the Venturi jet is fixed with a confluence nozzle, and the Venturi jet is connected to the air outlet through the confluence nozzle.

[0010] In a preferred embodiment of this invention, the upper housing and the liquid storage box are connected by threads, and the liquid storage box and the lower housing are fastened together by screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The equipment adopts a modular and compact design with an upper shell, a liquid storage box, and a lower shell. Compared with traditional fixed or trolley-type equipment, it eliminates the need for a large-capacity liquid storage tank and a high-power fan, resulting in a significant reduction in size and weight. This makes it easy to deploy in narrow spaces such as small laboratory workbenches and inside equipment chambers, and it is also suitable for multi-point sterilization scenarios. The micro impeller is driven to rotate by airflow, which causes hydrogen peroxide gas to diffuse in all directions as the impeller rotates, breaking through the limitations of the fixed spray direction of traditional equipment. Especially when sterilizing complex chamber structures or multi-directional surfaces, it can achieve coverage without dead angles, significantly improving the uniformity and thoroughness of sterilization.

[0013] (2) The combination of an ultrasonic atomizer and a Venturi jet injector achieves efficient atomization and gas-liquid mixing of hydrogen peroxide solution. The negative pressure suction mechanism of the Venturi jet injector ensures that the atomized gas fully participates in the mixing, and the secondary acceleration design of the manifold nozzle further refines the droplet size and enhances gas penetration, achieving efficient sterilization at low temperatures and avoiding damage to sensitive items from high temperatures. The upper shell and the liquid storage box are connected by threads, and the liquid storage box and the lower shell are fastened by screws, making disassembly and assembly convenient for solution addition and equipment maintenance. At the same time, the gradually expanding diameter design of the gas outlet reduces gas jet resistance, and the support and fixing structure of the micro impeller ensures rotational stability. The overall equipment operates reliably and is applicable to a wide range of scenarios. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an overall cross-sectional view of the present invention;

[0017] In the diagram: 1. Upper shell; 2. Liquid storage box; 3. Lower shell; 4. Air outlet; 5. Miniature impeller; 6. Venturi jet injector; 7. Feed port; 8. Ultrasonic atomizer; 9. Air pump; 10. Air outlet pipe; 11. Manifold nozzle; 12. Support. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example

[0020] Please see Figure 1-2 The present invention provides the following technical solution: a small low-temperature hydrogen peroxide vaporization sterilizer, comprising an outer shell, the outer shell comprising an upper shell 1, a liquid storage box 2 connected to the bottom of the upper shell 1, a lower shell 3 connected to the bottom of the liquid storage box 2, an air outlet 4 opened at the center of the top of the upper shell 1, a micro impeller 5 installed at the center of the top of the air outlet 4, a Venturi jet 6 fixed at the center inside the upper shell 1, the mixing outlet of the Venturi jet 6 being connected to the air outlet 4, feeding ports 7 being connected to both sides of the negative pressure zone of the Venturi jet 6, the feeding ports 7 being placed inside the upper shell 1, ultrasonic atomizers 8 being installed on both sides of the bottom of the liquid storage box 2, an air pump 9 being installed inside the lower shell 3, an air outlet pipe 10 being connected to the air outlet end of the air pump 9, and the air inlet of the Venturi jet 6 being connected to the end of the air outlet pipe 10.

[0021] In order to ensure that the high-speed airflow can directly impact the central area of ​​the micro impeller 5 along a straight path and avoid energy loss caused by airflow deflection, in this embodiment, as a preferred technical solution of the present invention, the air outlet 4, the micro impeller 5 and the Venturi jet 6 are arranged in a collinear manner.

[0022] In order to utilize the gradually expanding flow channel effect in fluid dynamics to guide the sterilizing gas to diffuse evenly during the spraying process, expand the spray angle and reduce the outlet resistance, so that the hydrogen peroxide gas can be dispersed to the surroundings with a larger coverage area, in this embodiment, as a preferred technical solution of the present invention, the diameter of the gas outlet 4 gradually increases from the inside to the outside of the upper shell 1.

[0023] In order to provide a stable pivot point for the micro impeller 5 and prevent it from shaking or deviating when rotating at high speed, in this embodiment, as a preferred technical solution of the present invention, the top of the micro impeller 5 is rotatably connected to a bracket 12, and the two ends of the bracket 12 are fixed to the upper housing 1.

[0024] In order to further accelerate the mixed gas output from the Venturi jet 6 through the constriction structure of the manifold nozzle 11, refine the hydrogen peroxide droplet size and improve the gas kinetic energy, thereby enhancing the gas penetration and driving effect on the micro impeller 5, in this embodiment, as a preferred technical solution of the present invention, the mixing outlet of the Venturi jet 6 is fixed with the manifold nozzle 11, and the Venturi jet 6 is connected to the gas outlet 4 through the manifold nozzle 11.

[0025] In order to enable quick disassembly and assembly of the various components of the outer shell, facilitate the replenishment of hydrogen peroxide solution in the liquid storage box 2 and the cleaning and maintenance of internal components such as the ultrasonic atomizer 8, and improve the convenience and reliability of the equipment, in this embodiment, as a preferred technical solution of the present invention, the upper shell 1 and the liquid storage box 2 are connected by threads, and the liquid storage box 2 and the lower shell 3 are fastened together by screws.

[0026] In this embodiment, the Venturi jet 6 is a known technology that has been widely used in daily life. It is a pneumatic device that generates suction by positive pressure airflow to mix materials with air and then push them to be conveyed.

[0027] In summary, based on the above-described technical solution of this utility model, the working principle of the sterilizer is as follows:

[0028] Adding and storing hydrogen peroxide solution: Before using the equipment, the user can connect the upper housing 1 to the storage box 2 via the threaded connection, unscrew the upper housing 1 from the storage box 2, and inject hydrogen peroxide solution into the storage box 2. The capacity design of the storage box 2 balances miniaturization and single-use sterilization requirements, avoiding the large-capacity redundancy of traditional equipment while ensuring continuous solution supply. After injecting the solution, tighten the upper housing 1 to prevent solution leakage.

[0029] The atomization principle and solution vaporization process of the ultrasonic atomizer 8: The ultrasonic atomizer 8, installed on both sides of the bottom of the liquid storage box 2, is one of the core components for achieving low-temperature vaporization. The ultrasonic atomizer 8 generates high-frequency mechanical vibration, causing tiny droplets with a particle size much smaller than those produced by traditional heating vaporization to form on the surface of the hydrogen peroxide solution in the liquid storage box 2. These droplets form a high-concentration hydrogen peroxide gas layer above the solution surface. Since the atomization process does not require heating and is achieved solely through mechanical energy, it avoids the decomposition of hydrogen peroxide at high temperatures, thus preventing the production of oxygen and water and maximizing the preservation of the sterilization active ingredients.

[0030] The mixing principle of the air pump 9 and the Venturi jet 6: After the air pump 9 in the lower housing 3 is started, it outputs a high-speed compressed airflow, which is delivered to the air inlet of the Venturi jet 6 through the air outlet pipe 10. The flow channel of the Venturi jet 6 is designed as a three-section structure of "contraction-throat-diffusion". After the high-speed airflow enters, the cross-sectional area of ​​the flow channel gradually decreases, the airflow velocity further increases, and the static pressure drops sharply, forming a negative pressure zone at the throat. The feed ports 7 on both sides of the negative pressure zone are connected to the hydrogen peroxide gas layer in the liquid storage box 2. The negative pressure zone draws the gas into the throat of the Venturi jet 6 through the feed ports 7 and mixes it fully with the high-speed airflow. The mixed airflow enters the diffusion section, where the cross-sectional area of ​​the flow channel gradually increases, the velocity decreases, and the static pressure rises, forming a stable mixed airflow containing tiny hydrogen peroxide droplets and high-speed air. Finally, it is output through the mixing outlet of the Venturi jet 6.

[0031] Secondary acceleration and atomization optimization of the manifold nozzle 11: The mixing outlet of the Venturi jet 6 is fixed with a manifold nozzle 11. This nozzle adopts a narrowing design with an outlet cross-sectional area smaller than that of the mixing outlet. When the mixed airflow passes through, the flow velocity increases again, achieving "secondary acceleration". This process enhances the kinetic energy of the airflow, providing sufficient driving force for the subsequent impact on the micro impeller 5.

[0032] The dynamic diffusion principle and 360-degree injection of the micro impeller 5 are achieved as follows: the mixed airflow accelerated by the confluence nozzle 11 directly impacts the blade surface of the micro impeller 5 along the collinear direction of the outlet 4, the micro impeller 5, and the Venturi jet 6. The micro impeller 5 is rotatably connected to the upper shell 1 via the top support 12. Its blades are designed with inclined curved surfaces similar to fan blades. When the high-speed airflow impacts the blades, the kinetic energy of the airflow is converted into the rotational torque of the impeller, driving the impeller to rotate at high speed. During the rotation of the impeller, its centrifugal force generates a radial ejection effect on the hydrogen peroxide gas: the airflow that originally flowed axially is "captured" by the impeller blades and forms a spiral motion with the rotation of the impeller, eventually diffusing from the outer edge of the outlet 4 to all directions. At the same time, the gradually expanding design of the outlet 4, with its diameter gradually increasing from the inside to the outside, further expands the diffusion angle of the airflow under the guidance of the expanding wall surface, ultimately achieving 360-degree all-round injection.

[0033] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small low-temperature hydrogen peroxide vaporization sterilizer, comprising a shell, characterized in that: The outer shell includes an upper shell (1), a liquid storage box (2) is connected to the bottom of the upper shell (1), a lower shell (3) is connected to the bottom of the liquid storage box (2), an air outlet (4) is opened at the center of the top of the upper shell (1), a micro impeller (5) is installed at the center of the top of the air outlet (4), a Venturi jet (6) is fixed at the center inside the upper shell (1), the mixing outlet and the air outlet (4) of the Venturi jet (6) are connected, a feeding port (7) is connected to both sides of the negative pressure zone of the Venturi jet (6), the feeding port (7) is placed inside the upper shell (1), an ultrasonic atomizer (8) is installed on both sides of the bottom of the liquid storage box (2), an air pump (9) is installed inside the lower shell (3), an air outlet pipe (10) is connected to the air outlet end of the air pump (9), and the end of the air outlet pipe (10) is connected to the air inlet of the Venturi jet (6).

2. The small low-temperature hydrogen peroxide vaporization sterilizer according to claim 1, characterized in that: The air outlet (4), the micro impeller (5), and the Venturi jet (6) are arranged in a collinear manner.

3. A small low temperature hydrogen peroxide vaporization sterilizer according to claim 1, characterized in that: The diameter of the air outlet (4) gradually increases from the inside to the outside of the upper shell (1).

4. A small low temperature hydrogen peroxide vaporization sterilizer according to claim 1, characterized in that: The top of the micro impeller (5) is rotatably connected to a bracket (12), and the two ends of the bracket (12) are fixed to the upper shell (1).

5. A small low temperature hydrogen peroxide vaporization sterilizer according to claim 1, characterized in that: The Venturi jet (6) has a mixing nozzle (11) fixed at the mixing outlet, and the Venturi jet (6) is connected to the air outlet (4) through the mixing nozzle (11).

6. A small low temperature hydrogen peroxide vaporization sterilizer according to claim 1, characterized in that: The upper housing (1) and the liquid storage box (2) are connected by threads, and the liquid storage box (2) and the lower housing (3) are fastened together by screws.

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