A sterilization apparatus

Abstract

This utility model relates to a sterilization device, including a body, a plasma generator, a fan, a flash evaporation device, and an air pump. The fan is connected to one end of the surface plasma generator via an air supply duct. A quick-connect pneumatic butterfly valve is also installed on the air supply duct. The other end of the surface plasma generator, away from the air supply duct, is connected to the outlet chamber. The air pump is connected to the air injection port of the flash evaporation device via a second pipe. The air exhaust port of the flash evaporation device is connected to the VHP injection port of the outlet chamber via a third pipe. A hydrogen peroxide storage tank is installed on the inner rear end of the body. The hydrogen peroxide storage tank is connected to the solution injection port of the flash evaporation device via a first pipe. This utility model aims to solve the problem that many scenarios require both routine air disinfection that does not affect personnel activities and periodic, thorough terminal sterilization. Neither plasma sterilization nor VHP sterilization technology alone can meet both of these needs.

Description

Technical Field

[0001] This utility model relates to the field of sterilization equipment technology, and in particular to a sterilization device. Background Technology

[0002] As the industry continues to demand higher standards for sterilization efficiency, safety, and the diversity of applicable scenarios, traditional single sterilization technologies are gradually becoming insufficient to meet complex application needs, especially in terms of balancing "human-machine coexistence safety" and "thorough elimination of stubborn microorganisms."

[0003] (I) As an emerging low-temperature sterilization method, plasma sterilization technology has the core advantages of low temperature during sterilization, no chemical residue, and can be used for routine air disinfection in environments with normal personnel activity. However, plasma sterilization technology has significant shortcomings in its ability to kill microorganisms, especially highly resistant microorganisms such as spores. Its sterilization effect is difficult to achieve complete eradication, and it cannot meet the needs of scenarios with extremely high sterilization requirements (such as terminal sterilization in biosafety laboratories and sterile pharmaceutical production workshops).

[0004] (ii) Vaporized hydrogen peroxide (VHP) sterilization technology is currently recognized in the industry as one of the most efficient sterilization methods. However, VHP sterilization technology has significant limitations: high concentrations of hydrogen peroxide vapor are irritating and toxic to the human body, so it is necessary to ensure that personnel are completely evacuated from the sterilization area during the sterilization process, making it impossible to achieve "human-machine coexistence"; at the same time, it requires a long period of ventilation after sterilization to reduce the residual concentration, resulting in a long interval between equipment use and affecting continuous production or service efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a sterilization device to solve one or more problems in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A sterilization device includes a body, which comprises a plasma generator, a fan, a flash evaporation device, and an air pump. The fan is connected to one end of the plasma generator via an air supply duct. A quick-connect pneumatic butterfly valve is also installed on the air supply duct. The other end of the plasma generator, away from the air supply duct, is connected to an outlet chamber. The air pump is connected to the air injection port of the flash evaporation device via a second pipe. The air exhaust port of the flash evaporation device is connected to the VHP injection port of the outlet chamber via a third pipe. A hydrogen peroxide storage tank is installed at the inner rear end of the body. The hydrogen peroxide storage tank is connected to a peristaltic pump via a first pipe. The peristaltic pump is connected to the solution injection port of the flash evaporation device.

[0007] Preferably, the flash evaporation device further includes a vaporizer box, a top cover, and a sealing gasket.

[0008] Preferably, the sealing gasket is annular, and a local area of ​​the annulus has at least two sequentially connected planar segments. The planar segments form a straight profile segment, and the two ends of the straight profile segment are transitionally connected to the arc profile segment, together forming a closed annular sealing gasket structure.

[0009] Preferably, the vaporizer chamber is equipped with a heating rod and a temperature sensor.

[0010] Preferably, the heating rod and temperature sensor are disposed on the side surface of the flash evaporation device, and the heating rod and temperature sensor are arranged in sequence in the horizontal direction, wherein the temperature sensor is disposed at the center of the side surface, and the heating rod is evenly distributed on both sides of the temperature sensor and is located in the same plane.

[0011] Preferably, the top cover is detachably connected to the vaporizer housing by a number of fasteners, and the sealing gasket is disposed between the mating surfaces of the top cover and the vaporizer housing.

[0012] Preferably, the top of the unit is provided with an air outlet, and the bottom of the unit is provided with an air return outlet.

[0013] Preferably, the machine body is also equipped with a control panel, which integrates an HMI (Human Machine Interface). A controller is installed inside the machine body. The control panel, fan, air pump, hydrogen peroxide storage device, flash evaporation device, plasma generator, and quick-connect pneumatic butterfly valve are all connected to the controller.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows: (i) During the routine operation and maintenance phase, only the plasma sterilization system is used. Under the premise of ensuring that the normal operation of the clean area is not disturbed, the microorganisms in the area can be continuously and effectively inhibited, ensuring that the microbial indicators of the clean area meet the preset control standards for a long time and maintaining the stability of the clean status of the area.

[0015] (ii) When it is necessary to conduct a sterilization effect test or to perform deep sterilization of the clean area, the VHP sterilization system can be activated to perform all-round, no-dead-angle sterilization treatment on the clean area space and surface, so as to achieve the complete elimination of microorganisms and meet the high-level sterilization requirements.

[0016] The combined application of the two sterilization methods not only ensures the continuity and convenience of daily operation and maintenance, but also guarantees the thoroughness and reliability of sterilization in special scenarios, significantly improving the flexibility, targeting and overall effectiveness of sterilization control in clean areas. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a sterilization device according to an embodiment of the present invention is shown.

[0018] Figure 2 A schematic diagram of the structure of a flash evaporation device for a sterilization equipment according to an embodiment of the present invention is shown.

[0019] Figure 3 A top view of the sealing gasket of a flash evaporation device in a sterilization apparatus according to an embodiment of the present invention is shown.

[0020] Marked in the attached diagram: 1. Controller; 2. Fan; 3. Air duct; 4. Air pump; 5. Hydrogen peroxide storage tank; 6. Flash evaporation device; 601. Top cover; 602. Sealing gasket; 6021. Straight profile section; 6022. Circular profile section; 603. Vaporizer box; 604. Heating rod; 605. Temperature sensor; 606. Air inlet; 607. Air outlet; 608. Solution inlet; 7. Plasma generator; 8. VHP gas inlet; 9. Air outlet; 10. Control panel; 11. Quick-connect pneumatic butterfly valve; 12. Return air outlet; 13. Outlet chamber; 14. Body; 15. First pipe; 16. Second pipe; 17. Third pipe; 18. Peristaltic pump. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the sterilization device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only for the purpose of conveniently and clearly illustrating 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 the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, 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 the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] like Figures 1-2As shown, a sterilization device according to this embodiment includes a body 14, which includes a plasma generator 7, a fan 2, a flash evaporation device 6, and an air pump 4. The fan 2 is connected to one end of the plasma generator 7 through an air supply duct 3. A quick-connect pneumatic butterfly valve 11 is also provided on the air supply duct 3. The other end of the plasma generator 7 away from the air supply duct 3 is connected to the outlet chamber 13. The air pump 4 is connected to the air injection port 606 of the flash evaporation device 6 through a second pipe 16. The air exhaust port 607 of the flash evaporation device 6 is connected to the VHP injection port 8 of the outlet chamber 13 through a third pipe 17. A hydrogen peroxide storage tank 5 is provided at the inner rear end of the body 14. The hydrogen peroxide storage tank 5 is connected to a peristaltic pump 18 through a first pipe 15. The peristaltic pump 18 is connected to the solution injection port 608 of the flash evaporation device 6.

[0023] Furthermore, the flash evaporation device 6 also includes a vaporizer box 603, a top cover 601, and a sealing gasket 602.

[0024] Furthermore, the sealing gasket 602 is annular, and a local area of ​​the annulus has at least two sequentially connected planar segments. The planar segments form a straight profile segment 6021, and the two ends of the straight profile segment 6021 are transitionally connected to the arc profile segment 6022, together forming a closed annular sealing gasket structure.

[0025] Furthermore, the vaporizer housing 603 is equipped with a heating rod 604 and a temperature sensor 605.

[0026] Furthermore, heating rods 604 and temperature sensors 605 are disposed on the side surface of flash evaporation device 6. The heating rods 604 and temperature sensors 605 are arranged in sequence in the horizontal direction, with the temperature sensor 605 disposed at the center of the side surface and the heating rods 604 evenly distributed on both sides of the temperature sensor and located in the same plane.

[0027] Furthermore, the top cover 601 is detachably connected to the vaporizer box 603 by several fasteners, and the sealing gasket 602 is disposed between the mating surfaces of the top cover 601 and the vaporizer box 603.

[0028] Furthermore, the top of the unit 14 is provided with an air outlet 9, and the bottom of the unit 14 is provided with a return air outlet 12, adopting an upper air supply and lower air return layout to better circulate and diffuse the sterilization gas.

[0029] Furthermore, the machine body 14 is equipped with a control panel 10, which integrates an HMI (Human-Machine Interface). Inside the machine body 14 is a controller 1. The control panel 10, fan 2, air pump 4, hydrogen peroxide storage tank 5, flash evaporation device 6, plasma generator 7, and quick-connect pneumatic butterfly valve 11 are all connected to the controller 1. The control panel 10 is electrically connected to the controller 1 via a communication bus to receive user input commands and display operating status. The fan 2 is directly coupled to the output port of the controller 1 via a control signal line and is controlled to adjust the airflow rate. The air pump 4 is electrically connected to the controller 1 and responds to control signals to drive gas delivery. The hydrogen peroxide storage tank 5 is connected to the controller 1 via a sensor interface for liquid level monitoring and supply control. The flash evaporation device 6 is communicated to the controller 1 via a data line and is used to flash liquid into vapor under the command of the controller 1. The plasma generator 7 is electrically connected to the high-pressure output terminal of the controller 1 and is controlled to generate plasma for surface treatment. The quick-connect pneumatic butterfly valve 11 is connected to the controller 1 via a solenoid valve interface to regulate the opening and closing of the gas channel. The above connection method is existing technology, so it will not be described in detail.

[0030] Work Process 1: When VHP sterilization is not required, controller 1 controls the quick-connect pneumatic butterfly valve 11 to open and controls the fan 2 to start, delivering air to the plasma generator 7 through the air supply duct 3. At the same time, the plasma generator 7 is turned on, and the plasma generated by the plasma generator 7 is blown to the designated space through the air outlet 9 for sterilization.

[0031] Work Process Two: When VHP sterilization is required, controller 1 controls the plasma generator 7 to shut down and opens the quick-connect pneumatic butterfly valve 11 and fan 2 to form an overall air circulation. Then, controller 1 turns on air pump 4 to provide air source to air injection port 606 of flash evaporation device 6. Controller 1 turns on flash evaporation device 6, and the solution delivered from hydrogen peroxide storage tank 5 is vaporized by heating rod 604 of flash evaporation device 6. Then, the solution is injected into outlet chamber 13 through air outlet 607 of flash evaporation device 6 via VHP air injection port 8, and finally blown into the designated space from air outlet 9 for sterilization.

[0032] 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.

[0033] 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 sterilization device, comprising a body, characterized in that: The machine body includes a plasma generator, a fan, a flash evaporation device, and an air pump. The fan is connected to one end of the plasma generator through an air supply duct. A quick-connect pneumatic butterfly valve is also installed on the air supply duct. The other end of the plasma generator, away from the air supply duct, is connected to the outlet chamber. The air pump is connected to the air injection port of the flash evaporation device through a second pipe. The air outlet of the flash evaporation device is connected to the VHP injection port of the outlet chamber through a third pipe. A hydrogen peroxide storage tank is installed at the inner rear end of the machine body. The hydrogen peroxide storage tank is connected to a peristaltic pump through a first pipe. The peristaltic pump is connected to the solution injection port of the flash evaporation device.

2. The sterilization equipment as described in claim 1, characterized in that: The flash evaporation device also includes a vaporizer box, a top cover, and a sealing gasket.

3. The sterilization equipment as described in claim 2, characterized in that: The sealing gasket is annular, and a local area of ​​the annulus has at least two sequentially connected planar segments. The planar segments form a straight profile segment, and the two ends of the straight profile segment are connected to the arc profile segment to form a closed annular sealing gasket structure.

4. The sterilization equipment as described in claim 2, characterized in that: The vaporizer chamber is equipped with heating rods and temperature sensors.

5. The sterilization equipment as described in claim 4, characterized in that: The heating rods and temperature sensors are disposed on the side surface of the flash evaporation device. The heating rods and temperature sensors are arranged in sequence in the horizontal direction, with the temperature sensors disposed at the center of the side surface. The heating rods are evenly distributed on both sides of the temperature sensors and are located in the same plane.

6. The sterilization equipment as described in claim 2, characterized in that: The top cover is detachably connected to the vaporizer housing by several fasteners, and the sealing gasket is disposed between the mating surfaces of the top cover and the vaporizer housing.

7. The sterilization equipment as described in claim 1, characterized in that: An air outlet is provided at the top of the unit, and an air return outlet is provided at the bottom of the unit.

8. The sterilization equipment as described in claim 1, characterized in that: The machine body is also equipped with a control panel, which integrates an HMI (Human Machine Interface). The machine body is equipped with a controller. The control panel, fan, air pump, hydrogen peroxide storage device, flash evaporation device, plasma generator, and quick-connect pneumatic butterfly valve are all connected to the controller.

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