Normal temperature plasma sterilization equipment suitable for heat-sensitive instruments

Abstract

The present application belongs to the technical field of plasma disinfection, and aims at the technical problems of uneven disinfection, poor heat dissipation and inability to adjust according to the size of the instrument of the existing plasma disinfection equipment, and the problem of heat damage to heat-intolerant instruments caused by the temperature overrun in the disinfection cabinet due to the insufficient passive heat dissipation efficiency in the heat dissipation performance, and provides a normal-temperature plasma disinfection equipment suitable for heat-intolerant instruments, which realizes the all-around uniform coverage of the low-temperature plasma on the heat-intolerant instruments by adjusting the rotation of the instrument storage box through the adjusting unit driver, adapts to instruments of different sizes through independent lifting, cooperates with the auxiliary unit to forcibly dissipate heat on the surface of the heat dissipation fins, and realizes temperature abnormality early warning through the temperature sensor and the audible and visual alarm, so that the disinfection process is in a normal-temperature safe state, and the present application has the advantages of good disinfection uniformity, high heat dissipation efficiency, compact structure, convenient operation, safety and reliability and the like.

Description

Technical Field

[0001] This invention relates to a disinfection device, specifically a room-temperature plasma disinfection device suitable for heat-sensitive instruments, belonging to the field of plasma disinfection technology. Background Technology

[0002] Plasma sterilization technology, as an emerging low-temperature sterilization method, has received widespread attention and application in the field of medical device sterilization in recent years. Compared with traditional sterilization methods such as pressure steam sterilization, ethylene oxide sterilization, and irradiation sterilization, plasma sterilization can achieve highly efficient sterilization of heat-sensitive instruments at room temperature. Moreover, the sterilization process is non-toxic, harmless, and leaves no residue, making it particularly suitable for the sterilization of temperature-sensitive optical instruments, electronic equipment, polymer material instruments, and precision surgical instruments.

[0003] Several room-temperature plasma sterilization devices suitable for heat-sensitive instruments have been disclosed in the prior art. For example, publication number CN222055981U discloses a medical plasma sterilization cabinet, including a cabinet body, a cabinet door, a sterilization chamber, and a mesh frame. The cabinet body has a hinged door, and the inner wall of the cabinet body is equipped with a sterilization chamber. The inner wall of the sterilization chamber is equipped with a mesh frame. This patent uses a water collection cavity and a collection groove on a water receiving tray between the bottom surface of the mesh frame and the bottom surface of the inner wall of the sterilization chamber to collect water from the surface of the instruments, thus avoiding water stains. However, the instrument mesh frame in this patent is a fixed structure, and the instruments remain stationary during the sterilization process. The plasma generator is usually located within the sterilization chamber. The fixed position of the inner wall of the disinfection cabinet naturally results in a certain degree of unevenness in the concentration distribution of plasma inside the cabinet. When instruments with complex shapes or deep-hole groove structures are placed in the fixed position for disinfection, the shielding effect of the instruments themselves makes it difficult for the surface of the instruments far from the plasma generator and the hidden parts of the instruments to obtain sufficient plasma exposure, thus forming disinfection dead corners. At the same time, this patent relies solely on the natural heat dissipation of the cabinet and does not have an effective forced heat dissipation structure. During long-term continuous disinfection, the internal heat accumulation is serious, posing a potential risk of thermal damage to heat-sensitive instruments. For example, CN212235374U discloses an endoscope plasma disinfection and storage cabinet, which includes a storage cabinet, a plasma disinfection device, and multiple hanging racks. The plasma disinfection device includes a shell, a filter assembly, a plasma generator, and a circulating fan. The shell is fixed to the top of the storage cabinet. By installing the plasma disinfection device on the top of the storage cabinet and configuring a circulating fan to achieve internal air circulation, the storage of endoscopes is safer and cleaner. However, the instrument storage position in this patent is fixed by the hanging racks, and the height position of the instruments cannot be adjusted according to the length and shape of different endoscopes. This results in shorter instruments being too far from the plasma generator and having insufficient disinfection effect, while longer instruments may not be able to be fully placed due to space limitations. In addition, although this patent sets up a circulating fan for air circulation, the circulating fan requires an independent drive motor, which not only increases the manufacturing cost and energy consumption of the equipment, but also makes the equipment structure more complex, increasing the probability of failure and the difficulty of maintenance.

[0004] A thorough analysis of the existing technologies reveals several technical shortcomings and deficiencies in practical applications of current plasma sterilization equipment: First, poor sterilization uniformity; the fixed instrument support structure prevents the instruments from moving, making it difficult for plasma to cover all surfaces and creating sterilization dead zones. Second, poor heat dissipation; the passive heat dissipation structure has limited heat exchange efficiency, failing to dissipate heat promptly, leading to increased internal temperature and posing a risk of thermal damage to heat-sensitive instruments. Third, inability to adjust for instrument size; the fixed height of the instrument tray cannot accommodate instruments of varying lengths and heights, affecting sterilization effectiveness and causing inconvenience for operators handling instruments. Therefore, providing a room-temperature plasma sterilization device with good sterilization uniformity, high heat dissipation efficiency, adjustable height based on instrument size, and a compact structure suitable for heat-sensitive instruments is a pressing technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a room-temperature plasma disinfection device suitable for heat-sensitive instruments, addressing the problems of uneven disinfection, poor heat dissipation, and inability to adjust according to instrument size in existing plasma disinfection equipment.

[0006] The present invention achieves the above objectives through the following technical solution: a room temperature plasma disinfection device suitable for heat-sensitive instruments, comprising a disinfection cabinet body, a sealed door rotatably connected to the surface of the disinfection cabinet body via a hinge, a control panel fixedly installed on the surface of the sealed door, plasma generators fixedly connected to the inner top wall and inner bottom wall of the disinfection cabinet body respectively, and a high voltage power supply fixedly installed on the upper surface of the disinfection cabinet body. The disinfection cabinet body has an instrument tray inside. An adjustment unit for driving the instrument tray to rotate and lift is set between the instrument tray and the inner wall of the disinfection cabinet body. Heat dissipation fins are symmetrically fixed to the side wall of the disinfection cabinet body. One side of the heat dissipation fins extends into the interior of the disinfection cabinet body, and the other side extends to the outside of the disinfection cabinet body. An auxiliary unit is set on the outside of the heat dissipation fins and installed on the outer wall of the disinfection cabinet body. The auxiliary unit is used to dissipate the high temperature on the surface of the heat dissipation fins.

[0007] As a further aspect of the present invention, a movable base is fixedly connected to the bottom surface of the disinfection cabinet body.

[0008] As a further embodiment of the present invention: the high-voltage power supply is electrically connected to an external power supply to provide high-frequency high-voltage electrical energy to the discharge unit; the plasma generator is arranged in an array on the inner side of the top wall and the inner side of the bottom wall of the disinfection cabinet body, and the plasma generator is electrically connected to the high-voltage power supply to generate low-temperature plasma under the excitation of high-voltage electrical energy.

[0009] As a further embodiment of the present invention: the adjustment unit includes a motor bracket, a drive motor, a drive rod, a hollow outer rod, an electric push rod, and a lifting rod. The motor bracket is fixedly connected to the bottom surface of the disinfection cabinet body. The drive motor is fixedly installed on the inner surface of the motor bracket. The output end of the drive motor is fixedly connected to the drive rod. The drive rod is rotatably connected to the lower surface of the disinfection cabinet body. The hollow outer rod is rotatably connected to the inner bottom surface of the disinfection cabinet body. One end of the drive rod extends into the interior of the disinfection cabinet body and is fixedly connected coaxially with the bottom end of the hollow outer rod. The lifting rod is slidably connected inside the hollow outer rod. An electric push rod is fixedly installed between the hollow outer rod and the lifting rod. The top end of the lifting rod is fixedly connected coaxially with the bottom surface of the instrument tray.

[0010] As a further embodiment of the present invention: the inner wall of the hollow outer rod is symmetrically provided with a limiting groove, the rod body of the lifting rod is symmetrically and fixedly connected with a limiting slider, the limiting slider is slidably disposed in the limiting groove, and the lifting rod is slidably connected to the hollow outer rod through the cooperation of the limiting slider and the limiting groove.

[0011] As a further embodiment of the present invention: an impeller is coaxially fixedly connected to the surface of the hollow outer rod, the impeller is located below the instrument tray, and a flow guide is fixedly connected to the inner wall of the disinfection cabinet body. The flow guide covers the outside of the impeller, and multiple air outlets are arrayed on the upper surface of the flow guide, with the air outlet direction of each air outlet facing the instrument tray.

[0012] As a further embodiment of the present invention: the auxiliary unit includes a main pulley, a secondary pulley, a belt, a rotating rod, a positioning plate, a first bevel gear, a second bevel gear, a rotating shaft, fan blades, and a protective cover. The rotating rod is rotatably connected to the surface of the movable base, and the bottom end of the rotating rod extends to the lower side of the movable base. The end of the rotating rod extending to the lower side of the movable base is fixedly connected to a secondary pulley. The surface of the driving rod is coaxially fixedly connected to a main pulley, and a belt is used for transmission between the main pulley and the secondary pulley. Multiple positioning plates are fixedly connected at equal intervals from top to bottom on the outer side wall of the disinfection cabinet body. Each positioning plate is rotatably sleeved on the surface of the rotating rod. A protective cover is fixedly connected to the side surface of the disinfection cabinet body on the outer side of each heat dissipation fin. A rotating shaft is rotatably connected to the surface of each protective cover. A fan blade is fixedly connected to one end of the rotating shaft, and the fan blade is disposed between the protective cover and the heat dissipation fin. A second bevel gear is fixedly connected to the other end of the rotating shaft. The surface of the second bevel gear is meshed with a first bevel gear, and the first bevel gear is coaxially fixed to the surface of the rotating rod.

[0013] As a further embodiment of the present invention: a temperature sensor is fixedly connected to the inner wall of the disinfection cabinet body, and an audible and visual alarm is fixedly connected to the surface of the sealed door, with the temperature sensor and the audible and visual alarm being electrically connected.

[0014] The beneficial effects of this invention are: 1) This invention, by setting a drive motor in the adjustment unit to drive the instrument tray to rotate continuously inside the disinfection cabinet, causes the heat-sensitive instruments to constantly change orientation during the disinfection process, completely solving the problem of uneven disinfection caused by the instruments being fixed in place in the prior art. It achieves all-round uniform coverage of heat-sensitive instruments by low-temperature plasma, significantly improving the disinfection effect and sterilization reliability. At the same time, the electric push rod in the adjustment unit independently controls the raising and lowering of the instrument tray, so that the instrument tray can be adjusted to the optimal disinfection height according to the size of the heat-sensitive instruments. This completely solves the problem that the prior art cannot be adjusted according to the size of the instruments, greatly facilitating the operator to easily pick up and put down the instruments and ensuring that instruments at different heights can obtain the best disinfection effect. 2) This invention uses an impeller coaxially fixed to the surface of a hollow outer rod and a guide shroud and air outlet to drive the impeller to rotate and generate a directional upward airflow by using the rotational driving force of the adjustment unit itself. This can achieve forced circulation of low-temperature plasma without the need for an additional power source, effectively solving the technical problem of uneven plasma distribution inside the disinfection cabinet. At the same time, it blows away the inactivated microbial residue from the surface of the instrument in a timely manner, achieving dynamic enhancement of the disinfection effect. 3) This invention solves the technical problem of poor heat dissipation in the prior art by symmetrically fixing heat dissipation fins to the side wall of the disinfection cabinet body and configuring an auxiliary unit with a drive motor as a common power source. The power transmission chain consisting of a main pulley, belt, auxiliary pulley, rotating rod, first bevel gear, second bevel gear and rotating shaft drives the fan blades to rotate at high speed to force air cooling on the surface of the heat dissipation fins. This achieves efficient heat dissipation from the inside of the disinfection cabinet body, ensuring that heat-sensitive instruments are always within a safe temperature range throughout the disinfection process and eliminating the risk of heat damage. The temperature sensor monitors the internal temperature of the disinfection cabinet body in real time and combines it with an audible and visual alarm to provide abnormal alarms. During use, when the auxiliary heat dissipation system cannot effectively control the temperature, it can promptly remind the operator to interrupt the disinfection program, further improving the safety and reliability of the equipment. 4) The movable base of the present invention enables the disinfection equipment to be flexibly transferred and quickly deployed between different departments, which significantly reduces the equipment procurement cost and space occupancy rate of medical institutions; 5) This invention has made significant technological progress in terms of disinfection uniformity, heat dissipation efficiency, structural integration, instrument adaptability, safety warning, and ease of operation, and has extremely high practical value and application prospects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the internal structure of the disinfection cabinet body in this invention; Figure 5 This is a schematic diagram of the connection structure of the impeller, the guide shroud, and the instrument tray in this invention; Figure 6 This is a schematic diagram of the cross-sectional structure connecting the hollow outer rod and the lifting rod in this invention; Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the connection structure of the auxiliary unit in this invention; Figure 9 This is a schematic diagram showing the connection position of the fan blades and heat dissipation fins in this invention.

[0016] In the diagram: 1. Disinfection cabinet body; 2. Sealed door; 3. Control panel; 4. Movable base; 5. High-voltage power supply; 6. Plasma generator; 7. Instrument tray; 71. Motor bracket; 72. Drive motor; 73. Drive rod; 74. Hollow outer rod; 741. Limiting slide; 75. Electric push rod; 76. Lifting rod; 761. Limiting slider; 77. Impeller; 78. Air guide; 781. Air outlet; 8. Heat dissipation fins; 81. Main pulley; 82. Auxiliary pulley; 83. Belt; 84. Rotating rod; 85. Positioning plate; 86. First bevel gear; 87. Second bevel gear; 88. Rotating shaft; 89. Fan blade; 810. Protective cover; 9. Temperature sensor; 10. Audible and visual alarm. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1, as Figures 1 to 9 As shown, a room temperature plasma disinfection device suitable for heat-sensitive instruments includes a disinfection cabinet body 1, a sealing door 2 that is rotatably connected to the surface of the disinfection cabinet body 1 via a hinge, a control panel 3 that is fixedly installed on the surface of the sealing door 2, a plasma generator 6 that is fixedly connected to the inner top wall and inner bottom wall of the disinfection cabinet body 1, and a high voltage power supply 5 that is fixedly installed on the upper surface of the disinfection cabinet body 1. This application achieves both convenient operation and airtight isolation of the disinfection equipment by connecting a sealed door 2 to the surface of the disinfection cabinet body 1 via a hinge, and fixing a control panel 3 on the surface of the sealed door 2. The hinged connection of the sealed door 2 ensures smooth opening and closing and long-term reliability. The control panel 3 installed on the surface of the sealed door 2 allows operators to set and monitor the equipment's operating parameters without opening the sealed door 2, thus avoiding the technical problem of contamination of the internal environment of the disinfection cabinet body 1 by external microorganisms due to frequent opening of the sealed door 2 during operation. At the same time, the user-friendly layout design of the control panel 3 significantly improves the efficiency of human-computer interaction and ease of use. In addition, the control panel 3 can also integrate centralized control and status display functions for the temperature sensor 9 and the audible and visual alarm 10 in the subsequent claims, enabling operators to monitor the internal working temperature and operating status of the disinfection cabinet body 1 in real time, further improving the intelligence level and safety of the equipment. This application achieves efficient disinfection and sterilization of heat-sensitive instruments at room temperature by fixing plasma generators 6 to the inner top and bottom walls of the disinfection cabinet body 1, and fixing a high-voltage power supply 5 to the upper surface of the disinfection cabinet body 1. The symmetrical distribution of plasma generators 6 on the inner top and bottom walls allows low-temperature plasma to act on the heat-sensitive instruments on the instrument tray 7 from both the top and bottom, thereby significantly improving the coverage and uniformity of plasma distribution inside the disinfection cabinet body 1 and effectively overcoming the technical defects of traditional single-sided plasma generator 6, which easily creates disinfection dead corners.

[0019] The disinfection cabinet body 1 has an instrument tray 7 inside. An adjustment unit for driving the instrument tray 7 to rotate and lift is provided between the instrument tray 7 and the inner wall of the disinfection cabinet body 1. Heat dissipation fins 8 are symmetrically fixedly connected to the side wall of the disinfection cabinet body 1. One side of the heat dissipation fins 8 extends into the interior of the disinfection cabinet body 1, and the other side extends to the outside of the disinfection cabinet body 1. An auxiliary unit is provided on the outside of the heat dissipation fins 8 and installed on the outer wall of the disinfection cabinet body 1. The auxiliary unit is used to dissipate the high temperature on the surface of the heat dissipation fins 8.

[0020] This application achieves the technical effect of independently controlling the rotation and lifting movements of the instrument tray 7 by incorporating an instrument tray 7 inside the disinfection cabinet body 1 and an adjustment unit between the instrument tray 7 and the inner wall of the disinfection cabinet body 1. The lifting movement is mainly for adjusting the instrument tray 7 to a suitable disinfection height according to the size of heat-sensitive instruments, thus completely solving the technical problem in the prior art that it is impossible to adjust according to the size of the instruments. This facilitates the handling of instruments by operators of different heights and ensures that instruments of different heights are within the optimal radiation range of the plasma generator 6. The rotation movement is used during the disinfection process. The instrument tray 7 rotates continuously at a constant speed, causing the heat-sensitive instruments placed on it to constantly change orientation. This allows the low-temperature plasma generated by the plasma generator 6 to fully contact and cover the heat-sensitive instruments from all angles, solving the technical problem of uneven disinfection caused by the instruments themselves blocking the traditional fixed instrument support structure. The dynamic disinfection mode brought about by the rotation also promotes the formation of a continuous airflow scouring effect on the instrument surface by the low-temperature plasma, further enhancing the synergistic effect of physical impact and chemical inactivation of microorganisms on the instrument surface by the low-temperature plasma. Thus, the disinfection effect and sterilization efficiency are greatly improved without raising the disinfection temperature. This application effectively solves the technical problem of poor heat dissipation in the prior art by symmetrically and fixedly connecting heat dissipation fins 8 to the side wall of the disinfection cabinet body 1. The heat dissipation fins 8, as a heat conduction medium, quickly conduct the heat accumulated inside the disinfection cabinet body 1 to the outside of the disinfection cabinet body 1. The symmetrical fixed connection arrangement ensures the uniform output and balanced distribution of heat, effectively avoiding the technical risk of uneven temperature distribution inside the disinfection cabinet body 1 due to local overheating, which affects the disinfection effect of heat-sensitive instruments. The introduction of auxiliary units further enhances the convective heat dissipation efficiency of the surface of the heat dissipation fins 8, so that the high temperature accumulated on the surface of the heat dissipation fins 8 can be quickly carried away and dissipated to the surrounding environment, thereby maintaining the constant temperature working state inside the disinfection cabinet body 1 and ensuring that heat-sensitive instruments are always within the safe temperature range throughout the disinfection process.

[0021] A movable base 4 is fixedly connected to the bottom surface of the disinfection cabinet body 1.

[0022] This application significantly improves the mobility and on-site adaptability of the disinfection equipment by fixing a movable base 4 to the bottom surface of the disinfection cabinet body 1. As the bottom support structure of the disinfection cabinet body 1, the movable base 4 not only bears the weight and provides stable support for the entire disinfection equipment, but also provides a basis for the flexible transfer and rapid deployment of the disinfection equipment between different medical departments, operating rooms, and laboratories. In actual use scenarios in medical institutions, the disinfection needs of heat-sensitive instruments in different departments often exhibit time-varying, concentrated, and sudden characteristics. The introduction of the movable base 4 allows one plasma disinfection device to serve multiple clinical departments as needed, thereby significantly reducing the equipment procurement cost and space occupancy rate of medical institutions. The movable base 4 can also adjust the placement and orientation of the disinfection cabinet body 1 at any time according to the on-site needs of the operators, so that the control panel 3 always faces the most convenient operating position for the operators, significantly improving the humanization and ease of operation of the equipment.

[0023] The high-voltage power supply 5 is electrically connected to an external power supply and is used to provide high-frequency high-voltage electrical energy to the discharge unit; the plasma generator 6 is arranged in an array on the inner side of the top wall and the inner side of the bottom wall of the disinfection cabinet body 1. The plasma generator 6 is electrically connected to the high-voltage power supply 5 and is used to generate low-temperature plasma under the excitation of high-voltage electrical energy.

[0024] This application achieves efficient, uniform, and thorough disinfection of heat-sensitive instruments at room temperature by electrically connecting a high-voltage power supply 5 to an external power source to provide high-frequency, high-voltage electrical energy to the discharge unit, and simultaneously arranging plasma generators 6 in an array on the inner sides of the top and bottom walls of the disinfection cabinet body 1. The plasma generators 6 are also electrically connected to the high-voltage power supply 5 to generate low-temperature plasma under high-voltage excitation. The array arrangement means that multiple plasma generators 6 form a regular discharge network on the inner sides of the top and bottom walls of the disinfection cabinet body 1 according to a preset geometric spacing. This overcomes the limitations of traditional single-point or single-row plasma generators 6, which suffer from uneven plasma concentration distribution and insufficient disinfection effect in edge areas. The low-temperature plasma radiating downwards from the inner side of the top wall of the disinfection cabinet body 1 and the low-temperature plasma radiating upwards from the inner side of the bottom wall of the disinfection cabinet body 1 converge and superimpose within the internal space of the disinfection cabinet body 1. This ensures that both complex heat-sensitive instruments and instruments with deep holes, grooves, or other hard-to-reach areas can receive adequate disinfection.

[0025] The adjustment unit includes a motor bracket 71, a drive motor 72, a drive rod 73, a hollow outer rod 74, an electric push rod 75, and a lifting rod 76. The motor bracket 71 is fixedly connected to the bottom surface of the disinfection cabinet body 1. The drive motor 72 is fixedly installed on the inner surface of the motor bracket 71. The output end of the drive motor 72 is fixedly connected to the drive rod 73. The drive rod 73 is rotatably connected to the lower surface of the disinfection cabinet body 1. The hollow outer rod 74 is rotatably connected to the inner bottom surface of the disinfection cabinet body 1. One end of the drive rod 73 extends into the interior of the disinfection cabinet body 1 and is fixedly connected to the bottom end of the hollow outer rod 74 coaxially. The lifting rod 76 is slidably connected inside the hollow outer rod 74. An electric push rod 75 is fixedly installed between the hollow outer rod 74 and the lifting rod 76. The top end of the lifting rod 76 is fixedly connected to the bottom surface of the instrument tray 7 coaxially.

[0026] This application provides a stable mounting support for the drive motor 72 through the motor bracket 71, ensuring that the drive motor 72 maintains precise positioning and stable output during long-term continuous operation. The rotational torque generated by the drive motor 72 is transmitted to the coaxially fixed hollow outer rod 74 via the drive rod 73, causing the hollow outer rod 74 and its internally slidably connected lifting rod 76 to rotate uniformly around their own axis. This drives the instrument tray 7 to rotate continuously in the horizontal plane, causing the heat-sensitive instruments carried by the instrument tray 7 to continuously change orientation during the sterilization process. This allows the low-temperature plasma to continuously flush and cover the heat-sensitive instruments from all sides and angles, effectively eliminating sterilization blind spots caused by the instrument's own structure. At the same time, the telescopic movement of the electric push rod 75 causes the lifting rod 76 to slide up and down along the axial direction inside the hollow outer rod 74, thereby driving the instrument tray 7 to move up and down in the vertical direction. This allows the instrument tray 7 to be adjusted to the most suitable sterilization height according to the size of the heat-sensitive instruments, thus completely solving the technical problem in the prior art that it is impossible to adjust according to the size of the instruments. It should be noted that the extension stroke of the electric push rod 75 and the speed of the drive motor 72 can be flexibly adjusted according to the size, shape and disinfection requirements of different heat-sensitive instruments, fully meeting diverse disinfection needs and demonstrating high adaptability and practicality.

[0027] Furthermore, the inner wall of the hollow outer rod 74 is symmetrically provided with a limiting groove 741, and the rod body of the lifting rod 76 is symmetrically and fixedly connected with a limiting slider 761. The limiting slider 761 is slidably disposed in the limiting groove 741, and the lifting rod 76 is slidably connected to the hollow outer rod 74 through the cooperation of the limiting slider 761 and the limiting groove 741.

[0028] This application achieves this by symmetrically opening limiting grooves 741 on the inner wall of the hollow outer rod 74, so that the sliding of the limiting slider 761 in the limiting groove 741 always follows a predetermined straight trajectory, avoiding the circumferential deflection and radial sway that the lifting rod 76 may produce during the sliding process. At the same time, when the hollow outer rod 74 rotates around its own axis under the drive of the drive motor 72, the inner wall of the limiting groove 741 applies a circumferential thrust to the limiting slider 761, driving the lifting rod 76 to rotate synchronously with the hollow outer rod 74.

[0029] Example 2 is an improvement on Example 1: An impeller 77 is coaxially fixedly connected to the surface of the hollow outer rod 74. The impeller 77 is located below the instrument tray 7. A guide hood 78 is fixedly connected to the inner wall of the disinfection cabinet body 1. The guide hood 78 covers the outside of the impeller 77. Multiple air outlets 781 are arranged in an array on the upper surface of the guide hood 78. The air outlet direction of each air outlet 781 is towards the instrument tray 7.

[0030] In this application, the impeller 77 directly obtains high-speed rotational kinetic energy through the rotational motion of the hollow outer rod 74 in the regulating unit. The impeller 77 is located below the instrument tray 7, allowing the airflow generated during its rotation to flow upwards towards the instrument tray 7. During the upward airflow, the low-temperature plasma is forcibly carried and transported to various parts of the heat-sensitive instruments on the instrument tray 7. The design of the flow guide 78, covering the outside of the impeller 77, confines the airflow generated by the impeller 77 within the internal channel of the flow guide 78, ensuring orderly flow and effectively preventing disordered diffusion and energy waste. Multiple air outlets 781 arranged in an array on the upper surface of the flow guide 78 perform secondary distribution and homogenization of the airflow, ensuring that the airflow from each outlet 781 maintains a high degree of consistency in flow rate and velocity, and that the airflow direction of each outlet 781 is precisely directed towards the instrument tray. The design of 7 ensures that the rising airflow can act on the heat-sensitive instruments on the instrument tray 7 to the maximum extent. The directional air curtain formed between the air outlet 781 and the instrument tray 7 continuously delivers the low-temperature plasma generated by the plasma generator 6 to the surface of the heat-sensitive instruments, while blowing away the inactivated microbial residues on the surface of the instruments, thus achieving dynamic enhancement of the disinfection effect. This airflow circulation system works in synergy with the adjustment unit described in claim 4. The continuous rotation of the instrument tray 7 in the adjustment unit causes the instruments to constantly change orientation, while the directional rising airflow generated by the impeller 77 forces the low-temperature plasma to be delivered to all surfaces of the instruments. The directional flow of the airflow and the rotation of the instruments work together to form a dynamic, circulating, and fully covered disinfection environment inside the cabinet, completely eliminating the objective existence of disinfection dead corners.

[0031] The auxiliary unit includes a main pulley 81, a secondary pulley 82, a belt 83, a rotating rod 84, a positioning plate 85, a first bevel gear 86, a second bevel gear 87, a rotating shaft 88, a fan blade 89, and a protective cover 810. The rotating rod 84 is rotatably connected to the surface of the movable base 4, and the bottom end of the rotating rod 84 extends to the lower side of the movable base 4. The secondary pulley 82 is fixedly connected to the end of the rotating rod 84 extending to the lower side of the movable base 4. The main pulley 81 is coaxially fixedly connected to the surface of the drive rod 73. A belt 83 is drivingly connected between the main pulley 81 and the secondary pulley 82. The outer side wall of the disinfection cabinet body 1 is formed by the upper... Multiple positioning plates 85 are fixedly connected at equal intervals from bottom to top. Each positioning plate 85 is rotatably sleeved on the surface of the rotating rod 84. A protective cover 810 is fixedly connected to the side surface of the disinfection cabinet body 1 on the outside of each heat dissipation fin 8. A rotating shaft 88 is rotatably connected to the surface of each protective cover 810. A fan blade 89 is fixedly connected to one end of the rotating shaft 88. The fan blade 89 is disposed between the protective cover 810 and the heat dissipation fin 8. A second bevel gear 87 is fixedly connected to the other end of the rotating shaft 88. A first bevel gear 86 is meshed with the surface of the second bevel gear 87. The first bevel gear 86 is coaxially fixed to the surface of the rotating rod 84.

[0032] In this application, the main pulley 81 is coaxially fixed to the surface of the drive rod 73, allowing the rotational power of the drive rod 73 to be transmitted outward through the main pulley 81. The belt 83 transmits the rotational power of the main pulley 81 to the auxiliary pulley 82, thereby driving the rotating rod 84 to rotate around its own axis. This eliminates the need for a separate power source for the cooling system, effectively reducing manufacturing costs, energy consumption, and the probability of failure. The arrangement of positioning plates 85, fixed at equal intervals from top to bottom on the outer wall of the disinfection cabinet body 1 and slidingly engaging the rotating rod 84, ensures precise positioning and stable rotation of the rotating rod 84 in the vertical direction. The equal-interval distribution of multiple positioning plates 85 effectively prevents bending deformation of the rotating rod 84 during high-speed rotation. The rotational motion of the rotating rod 84 is transmitted to the second bevel gear 87, which meshes with the first bevel gear 86, which is coaxially fixed. The meshing transmission between the first bevel gear 86 and the second bevel gear 87... The rotational motion of the rotating rod 84 around the vertical axis is converted into the rotational motion of the rotating shaft 88 around the horizontal axis. The fan blade 89, which is fixedly connected to one end of the rotating shaft 88, rotates at high speed under the drive of the rotating shaft 88, generating forced convection air that continuously blows on the surface of the heat dissipation fins 8. This significantly enhances the heat exchange efficiency between the heat dissipation fins 8 and the surrounding air, solving the technical problem of poor heat dissipation in the prior art. The protective cover 810 is set on the outside of the fan blade 89 and the heat dissipation fins 8, which not only provides safety protection for the fan blade 89, but also guides the airflow generated by the fan blade 89, making the airflow more concentrated and effective on the surface of the heat dissipation fins 8. The equal spacing of multiple heat dissipation fins 8 in the vertical direction and the one-to-one correspondence of multiple fan blades 89 realize uniform heat dissipation of the entire height of the side wall of the disinfection cabinet body 1, completely solving the technical problem that the disinfection equipment will experience a decrease in disinfection efficiency or even equipment failure due to local overheating after long-term continuous operation.

[0033] A temperature sensor 9 is fixedly connected to the inner wall of the disinfection cabinet body 1, and an audible and visual alarm 10 is fixedly connected to the surface of the sealed door 2. The temperature sensor 9 and the audible and visual alarm 10 are electrically connected.

[0034] In this application, the temperature sensor 9 is fixedly connected to the inner wall of the disinfection cabinet body 1. It can collect the internal temperature data of the disinfection cabinet body 1 in real time and accurately, and convert the temperature signal into an electrical signal and transmit it to the control panel 3. When the temperature sensor 9 detects that the internal temperature of the disinfection cabinet body 1 exceeds the preset safety threshold, the control panel 3 immediately triggers the audible and visual alarm 10. The audible and visual alarm 10 emits a high-decibel buzzer and flashes a warning light, promptly reminding the operator of the abnormal internal temperature of the disinfection cabinet body 1. This avoids thermal damage to heat-sensitive equipment caused by equipment failure or prolonged continuous operation due to excessive temperature. The introduction of the temperature sensor 9 also allows the operator to monitor the temperature in real time through the control panel 3. The system controls the internal working temperature of the disinfection cabinet body 1, and anticipates and takes corresponding measures based on temperature change trends during the disinfection process, further improving the safety and reliability of the equipment. The design of the audible and visual alarm 10 installed on the surface of the sealed door 2 ensures that the alarm signal can be clearly perceived by the operator from multiple angles, and will not be ignored even in a medical environment with high background noise. When the auxiliary heat dissipation system fails to effectively control the temperature within the safe range due to malfunction or overload, the temperature sensor 9 detects the abnormal temperature and issues an alarm through the audible and visual alarm 10. The operator can then promptly interrupt the disinfection program and check the equipment, effectively preventing damage to heat-sensitive instruments caused by heat dissipation system failure.

[0035] In operation, the present invention first moves the disinfection cabinet body 1 to the desired position and fixes it in place using the movable base 4. After the operator opens the sealed door 2, the heat-sensitive instruments to be disinfected are placed on the instrument tray 7 (initially, the instrument tray 7 is in the lowest position). The sealed door 2 is closed, and the disinfection parameters are input through the control panel 3 to start the equipment. After the high-voltage power supply 5 is connected to the external power supply, the power frequency AC power is converted into high-frequency high-voltage power and continuously supplies power to the plasma generator 6. Under the excitation of the high-voltage power, the plasma generator 6 generates low-temperature plasma and distributes it evenly in the internal space of the disinfection cabinet body 1. At the same time, the adjustment unit starts to work. First, according to the size of the heat-sensitive instruments to be disinfected, the extension stroke of the electric push rod 75 is set through the control panel 3. The electric push rod 75 drives the lifting rod 76 to slide up and down along the straight trajectory defined by the limiting slide groove 741 inside the hollow outer rod 74, adjusting the instrument tray 7 to the most suitable disinfection height, so that instruments of different heights can be within the optimal radiation range of the plasma generator 6, thereby solving the problem of not being able to adjust according to the size of the instruments. Then, the drive motor 72 is started, and the rotational torque is output through the stable support of the motor bracket 71. The drive rod 73 transmits the rotational torque to the hollow outer rod 74. The hollow outer rod 74 rotates around its own axis and transmits the rotational torque to the lifting rod 76 through the cooperation of the limiting slide groove 741 and the limiting slider 761. The lifting rod 76 drives the instrument tray 7 to rotate continuously and uniformly in the horizontal plane. The heat-sensitive instruments on the instrument tray 7 change their orientation continuously under the rotation, so that the low-temperature plasma generated by the plasma generator 6 can fully cover the heat-sensitive instruments from all angles, thereby solving the problem of uneven disinfection. As the hollow outer rod 74 rotates, the impeller 77, which is coaxially fixed, also rotates at high speed. The airflow generated by the impeller 77 flows in an orderly manner under the constraint of the guide shroud 78 and is blown upwards through the air outlet 781 towards the heat-sensitive instruments on the instrument tray 7, forcibly delivering the low-temperature plasma to the instrument surface and blowing away the inactivated microbial residue. As the drive rod 73 rotates, the main pulley 81, which is coaxially fixed, also rotates. The main pulley 81 transmits the rotational power to the auxiliary pulley 82 through the belt 83. The auxiliary pulley 82 drives the rotating rod 84 to rotate around its own axis. The positioning plate 85 lifts the rotating rod 84. The multi-point support ensures its smooth rotation. The first bevel gear 86 on the surface of the rotating rod 84 transmits the rotational motion to the meshing second bevel gear 87. The second bevel gear 87 drives the rotating shaft 88 to rotate, which in turn drives the fan blade 89 to rotate at high speed. The forced convection air generated by the fan blade 89 continuously blows the heat dissipation fins 8 that extend into the body of the disinfection cabinet 1. The heat dissipation fins 8 quickly conduct the heat accumulated inside the body of the disinfection cabinet 1 to the outside and is carried away by the airflow generated by the fan blade 89 and dissipated into the environment, thereby solving the problem of poor heat dissipation. The protective cover 810 plays a dual role of safety protection and airflow guidance for the fan blade 89. During this process, the temperature sensor 9 monitors the internal temperature of the disinfection cabinet body 1 in real time. When the temperature exceeds the preset safety threshold, the audible and visual alarm 10 sounds an alarm to remind the operator. Under the combined action of the airflow disturbance of the regulating unit and the forced heat dissipation of the auxiliary unit, the disinfection cabinet body 1 maintains a constant room temperature environment. The low-temperature plasma continuously generated by the plasma generator 6 performs comprehensive disinfection of heat-sensitive instruments until the preset program is completed. After disinfection, the drive motor 72 stops working, allowing the instrument tray 7 to return to its initial position. The operator opens the sealed door 2 to remove the heat-sensitive instruments that have been disinfected and turns off the power to the equipment. At this point, the entire disinfection process is over.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A room-temperature plasma disinfection device suitable for heat-sensitive instruments, comprising a disinfection cabinet body (1), characterized in that: The surface of the disinfection cabinet body (1) is connected to a sealed door (2) by a hinge. A control panel (3) is fixedly installed on the surface of the sealed door (2). A plasma generator (6) is fixedly connected to the inner top wall and inner bottom wall of the disinfection cabinet body (1). A high-voltage power supply (5) is fixedly installed on the upper surface of the disinfection cabinet body (1). The disinfection cabinet body (1) is provided with an instrument tray (7) inside. An adjustment unit for driving the instrument tray (7) to rotate and lift is provided between the instrument tray (7) and the inner wall of the disinfection cabinet body (1). Heat dissipation fins (8) are symmetrically fixedly connected to the side wall of the disinfection cabinet body (1). One side of the heat dissipation fins (8) extends into the interior of the disinfection cabinet body (1), and the other side extends to the outside of the disinfection cabinet body (1). An auxiliary unit is provided on the outside of the heat dissipation fins (8) and installed on the outer wall of the disinfection cabinet body (1). The auxiliary unit is used to dissipate the high temperature on the surface of the heat dissipation fins (8).

2. The room temperature plasma disinfection equipment according to claim 1, characterized in that: The bottom surface of the disinfection cabinet body (1) is fixedly connected to a movable base (4).

3. The room temperature plasma disinfection equipment according to claim 1, characterized in that: The high-voltage power supply (5) is electrically connected to an external power supply and is used to provide high-frequency high-voltage electrical energy to the discharge unit; the plasma generator (6) is arranged in an array on the inner side of the top wall and the inner side of the bottom wall of the disinfection cabinet body (1). The plasma generator (6) is electrically connected to the high-voltage power supply (5) and is used to generate low-temperature plasma under the excitation of high-voltage electrical energy.

4. The room temperature plasma disinfection equipment according to claim 1, characterized in that: The adjustment unit includes a motor bracket (71), a drive motor (72), a drive rod (73), a hollow outer rod (74), an electric push rod (75), and a lifting rod (76). The motor bracket (71) is fixedly connected to the bottom surface of the disinfection cabinet body (1). The drive motor (72) is fixedly installed on the inner surface of the motor bracket (71). The output end of the drive motor (72) is fixedly connected to the drive rod (73). The drive rod (73) is rotatably connected to the lower surface of the disinfection cabinet body (1). On the other hand, a hollow outer rod (74) is rotatably connected to the inner bottom surface of the disinfection cabinet body (1). One end of the drive rod (73) extends into the interior of the disinfection cabinet body (1) and is fixedly connected to the bottom of the hollow outer rod (74) coaxially. A lifting rod (76) is slidably connected inside the hollow outer rod (74). An electric push rod (75) is fixedly installed between the hollow outer rod (74) and the lifting rod (76). The top of the lifting rod (76) is fixedly connected to the bottom surface of the instrument tray (7) coaxially.

5. The room temperature plasma disinfection equipment according to claim 4, characterized in that: The inner wall of the hollow outer rod (74) is symmetrically provided with a limiting groove (741). The lifting rod (76) is symmetrically fixedly connected with a limiting slider (761). The limiting slider (761) is slidably disposed in the limiting groove (741). The lifting rod (76) is slidably connected to the hollow outer rod (74) through the cooperation of the limiting slider (761) and the limiting groove (741).

6. The room temperature plasma disinfection equipment according to claim 4, characterized in that: An impeller (77) is fixedly connected coaxially to the surface of the hollow outer rod (74). The impeller (77) is located below the instrument tray (7). A flow guide (78) is fixedly connected to the inner wall of the disinfection cabinet body (1). The flow guide (78) covers the outside of the impeller (77). Multiple air outlets (781) are arranged in an array on the upper surface of the flow guide (78). The air outlet (781) of each air outlet is directed towards the instrument tray (7).

7. The room temperature plasma disinfection equipment according to claim 4, characterized in that: The auxiliary unit includes a main pulley (81), a secondary pulley (82), a belt (83), a rotating rod (84), a positioning plate (85), a first bevel gear (86), a second bevel gear (87), a rotating shaft (88), a fan blade (89), and a protective cover (810). The rotating rod (84) is rotatably connected to the surface of the movable base (4). The bottom end of the rotating rod (84) extends to the lower side of the movable base (4). The lower end of the rotating rod (84) extending to the lower side of the movable base (4) is fixedly connected to the secondary pulley (82). The surface of the drive rod (73) is coaxially fixedly connected to the main pulley (81). A belt (83) is drivingly connected between the main pulley (81) and the secondary pulley (82). The outer side of the disinfection cabinet body (1) Multiple positioning plates (85) are fixedly connected at equal intervals from top to bottom on the wall. Each positioning plate (85) is rotatably sleeved on the surface of the rotating rod (84). A protective cover (810) is fixedly connected to the side surface of the disinfection cabinet body (1) on the outside of each heat dissipation fin (8). A rotating shaft (88) is rotatably connected to the surface of each protective cover (810). A fan blade (89) is fixedly connected to one end of the rotating shaft (88). The fan blade (89) is disposed between the protective cover (810) and the heat dissipation fin (8). A second bevel gear (87) is fixedly connected to the other end of the rotating shaft (88). A first bevel gear (86) is meshed with the surface of the second bevel gear (87). The first bevel gear (86) is coaxially fixed to the surface of the rotating rod (84).

8. The room temperature plasma disinfection equipment according to claim 1, characterized in that: A temperature sensor (9) is fixedly connected to the inner wall of the disinfection cabinet body (1), and an audible and visual alarm (10) is fixedly connected to the surface of the sealed door (2). The temperature sensor (9) and the audible and visual alarm (10) are electrically connected.

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