Air-operated switch sterilization device with S-shaped air duct

Abstract

This utility model discloses a pneumatically operated disinfection and sterilization device with an S-shaped air duct, comprising a housing divided into an independent airflow treatment chamber, an electrical isolation chamber, and an electrical control equipment chamber to achieve gas-electric separation. Inlet and outlet air pipes are connected to the housing and pass through the airflow treatment chamber. The airflow treatment chamber has an extended air duct structure composed of two sets of baffles, forcing the gas to flow along an S-shaped tortuous path, extending the gas residence time. An airflow sensing module detects the airflow through a sensor probe and transmits a signal to the control module, thereby independently controlling the gas disinfection module to achieve automatic start and stop. The purpose of this utility model is to provide a device that achieves gas-electric separation by dividing the housing into three chambers, integrates multiple disinfection elements along the S-shaped airflow path to disinfect the air, and uses a pneumatically operated switch sensor to control the start and stop of the disinfection process. This solves problems such as control dependence, poor disinfection effect, and inconvenient maintenance, improving reliability and efficiency while also facilitating maintenance.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a wind-driven switch for disinfection and sterilization of an S-shaped air duct. Background Technology

[0002] In the fields of medical, laboratory, and industrial waste gas treatment, the automation control and gas treatment efficiency of disinfection and sterilization devices are directly related to the level of biosafety protection and compliance with environmental standards. Common disinfection and sterilization devices on the market mainly rely on two linkage methods for on / off control. The first method uses a wired linkage with a negative pressure unit for control: the negative pressure unit sends start or stop signals according to its preset program, and transmits the signals to the disinfection and sterilization device through physical wiring, thereby triggering its start and stop actions. However, this hard-wired method has exposed a series of problems in practical applications. The core flaw is that the preset program of the negative pressure unit is fixed, while the types and concentrations of pollutants in the actual gas to be treated (especially the composition of impurities and bacteria) and the specific sterilization environment requirements are highly dynamic. This results in the preset gas treatment time often failing to meet actual disinfection needs; that is, the device strictly follows the set on / off of the negative pressure unit, cannot flexibly adapt to different operating conditions, and cannot ensure effective disinfection of all flowing gases. Furthermore, this solution relies on complex physical wiring connections, which not only increases installation complexity but also requires regular monitoring and maintenance by dedicated personnel, increasing the maintenance burden and potential points of failure.

[0003] The second approach uses a wireless gateway to link with the negative pressure unit: the start / stop signals of the negative pressure unit are transmitted to the sterilization device via the wireless gateway. While this avoids wiring issues, its core control logic remains the same as the wiring method—it still relies entirely on the fixed program settings of the negative pressure unit to control the operation of the sterilization device. Therefore, it also cannot resolve the fundamental contradiction caused by the dynamic changes in gas composition and sterilization requirements; that is, a rigid programmed switch cannot guarantee the actual treatment effect. Furthermore, the wireless solution introduces new challenges: to achieve wireless communication, the communication protocol of the programmable logic controller (PLC) needs to be manually edited, which directly increases the product development threshold and cost. At the same time, the wireless gateway itself becomes a new link requiring dedicated personnel for maintenance and upkeep. Crucially, both control solutions share a common, deeper safety hazard—the operation of the sterilization device is entirely dependent on the operating status and signal output of the negative pressure unit. This means that whether the sterilization device itself malfunctions or any problem occurs in the negative pressure unit system (including signal transmission errors or interruptions), it will directly lead to the failure or malfunction of the sterilization function, posing a high risk to the overall reliability and safety of the system.

[0004] Meanwhile, existing disinfection and sterilization devices also have significant shortcomings in their core processing structure design. The gas handling chambers commonly used in the market are mostly simple, straight-through structures. The drawback of this design is that the gas flow path is short and lacks necessary retention or turbulence mechanisms, resulting in excessively high gas velocity and significantly compressed effective residence time (i.e., disinfection time) within the device. This excessively short treatment time severely limits the sufficient contact and interaction between disinfection agents (such as ultraviolet light, ozone, or other disinfection media) and microorganisms in the gas, inevitably leading to unsatisfactory disinfection results and making it difficult to achieve the expected sterilization standards.

[0005] Therefore, both in terms of control methods and gas handling structures, existing technologies have problems that urgently need improvement, such as being unable to effectively adapt to actual use environments, being cumbersome to maintain, and having low sterilization efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a wind-driven disinfection and sterilization device with an S-shaped air duct. By placing a sensor probe at the air inlet to detect gas flow in real time, and cooperating with a wind-driven switch sensor placed in the electrical control equipment cavity, the disinfection and sterilization device can automatically start and stop with the airflow. At the same time, the S-shaped air duct structure reduces the gas flow rate and extends its residence time in the processing cavity within a limited space, thereby significantly improving the disinfection and sterilization effect, avoiding gas processing environment risks and external interference, and facilitating after-sales maintenance.

[0007] To achieve the above objectives, this utility model adopts the following solution: a pneumatically operated disinfection and sterilization device for an S-shaped air duct, comprising:

[0008] The enclosure consists of mutually isolated airflow handling chambers, electrical isolation chambers, and electrical control equipment chambers;

[0009] The air inlet pipe and the air outlet pipe are respectively connected to the top and bottom of the housing and communicate with the airflow treatment chamber;

[0010] An extended air duct structure is provided inside the airflow treatment chamber and consists of at least two sets of baffles. The two sets of baffles extend outward from the opposite inner walls of the airflow treatment chamber in a staggered and parallel manner, forcing the gas entering from the inlet pipe to flow through the airflow treatment chamber in a significantly extended and tortuous path before being discharged from the outlet pipe.

[0011] A gas disinfection module is installed in the extended and tortuous gas path formed by the extended air duct structure, and is used to disinfect and sterilize the gas flowing through the path.

[0012] The airflow sensor module includes:

[0013] The sensor probe is installed inside the airflow processing chamber, near the air outlet of the air inlet pipe, to detect the gas inflow status.

[0014] The wind-driven switch sensor body is disposed inside the cavity of the electrical control equipment;

[0015] A sealed wire assembly passes through the wall panel between the airflow treatment chamber and the electrical isolation chamber, and between the electrical isolation chamber and the electrical control equipment chamber, with its two ends connected to the sensor probe and the wind-driven switch sensor body, respectively.

[0016] The control module is located inside the cavity of the electrical control equipment. Its signal input terminal is connected to the output terminal of the wind-driven switch sensor body, and the signal output terminal of the control module is connected to the gas disinfection module.

[0017] The airflow sensing module is configured to generate a start signal when the sensor probe detects gas flowing into the air inlet pipe and transmit it to the wind-driven switch sensor body through the sealed wire assembly.

[0018] The wind-driven switch sensor body transmits the start signal to the control module located inside the electrical control equipment cavity;

[0019] The control module activates the gas sterilization module based on the start signal.

[0020] When the sensor probe detects that the gas inflow has stopped, it generates a stop signal and transmits it to the wind-driven switch sensor body through the sealed wire assembly;

[0021] The wind-driven switch sensor body transmits the stop signal to the control module inside the electrical control equipment cavity;

[0022] The control module shuts down the gas sterilization module based on a stop signal.

[0023] This solution completely solves the corrosion and maintenance problems caused by gas-electric mixing by dividing the internal enclosure into airflow treatment chamber, electrical isolation chamber, and electrical control equipment chamber. It achieves gas-electric separation, effectively preventing humid gases from corroding electrical control components and significantly improving maintenance convenience. To address the issue of excessively high gas velocity, a multi-layered baffle structure is used in the airflow treatment chamber to extend the airflow along a long and tortuous S-shaped path, significantly reducing velocity and extending residence time, thereby greatly improving disinfection and sterilization effects within a limited space. The gas disinfection module is placed within this extended path to ensure sufficient contact between disinfectant agents and microorganisms, achieving highly efficient disinfection and sterilization of the flowing gas. For system start-up and shutdown control, an airflow sensor module is used to directly detect the airflow status and automatically trigger signals, solving the problems of relying on external negative pressure unit programs and signal transmission risks. This enables automatic start-up and shutdown with airflow, avoiding interference and environmental risks. Furthermore, the control module is connected only to the wind-driven switch body and eliminates the need for external communication interfaces, completely freeing it from dependence on the negative pressure system and achieving independent and automatic start-stop control, ultimately significantly improving the reliability, safety, and autonomy of the entire system.

[0024] As a further embodiment of this utility model, wire through holes are respectively provided on the wall panels located between the airflow processing chamber and the electrical isolation chamber, and between the electrical isolation chamber and the electrical control equipment chamber, for providing a through channel for the sealed wire assembly;

[0025] The sealed wire assembly includes:

[0026] A wire seal is installed in the wire perforation on the wall panel between the airflow treatment chamber and the electrical isolation chamber to ensure the airtightness of the airflow treatment chamber and prevent gas leakage.

[0027] One end of the wire is connected to the tail end of the wire seal, and the other end of the wire passes through the wire hole in the wall panel between the electrical isolation cavity and the electrical control equipment cavity and is connected to the signal input terminal of the wind-driven switch sensor body.

[0028] One end of the wire is connected to the tail end of the sensor probe, and the other end of the wire passes through the wire seal and is electrically connected to the wire, so that the airflow signal collected by the sensor probe is conducted through the wire to the wire and then further transmitted to the wind-driven switch sensor body.

[0029] The above solution solves the airtightness problem when wires are laid by opening wire through holes in the wall panels between the airflow treatment chamber and the electrical isolation chamber, and between the electrical isolation chamber and the electrical control equipment chamber, and by configuring sealed wire assemblies. This achieves the effect of ensuring the airtightness of the airflow treatment chamber and preventing gas leakage.

[0030] As a further embodiment of this utility model, the gas disinfection module includes an ozone nozzle, an electric heater, and a photo-ionizer, which are respectively arranged from top to bottom within the airflow processing chamber; the baffles are respectively located between the ozone nozzle and the electric heater, and between the electric heater and the photo-ionizer, so that the gas passes through the airflow processing chamber along an S-shaped path, which solves the problem of limited effectiveness of a single disinfection method and achieves the purpose of further improving the disinfection and sterilization effect through the synergistic effect of multiple disinfection methods.

[0031] As a preferred embodiment of this utility model, the gas disinfection module includes at least one of an ozone nozzle, an electric heater, and a photohydrogen ion purifier, which solves the problem of inflexible disinfection configuration and achieves the effect of providing flexible disinfection configuration options to adapt to different disinfection needs.

[0032] As a further embodiment of this utility model, an ozone generator is provided on the inner wall of the electrical isolation chamber, and the outlet of the ozone generator is connected to the ozone nozzle through a pipeline; the heating tube of the electric heater is placed in the airflow treatment chamber, and the terminal block passes through the wall panel of the airflow treatment chamber and extends into the electrical isolation chamber; the disinfection unit of the photo-hydrogen ion purifier is housed in the airflow treatment chamber, and the electrical control box is set in the electrical isolation chamber to achieve gas-electric separation; the terminal blocks of the ozone generator, the electric heater, and the electrical control box of the photo-hydrogen ion purifier are all connected to the signal output terminal of the control module in the electrical control equipment chamber by wires passing through the wire holes in the wall panel between the electrical isolation chamber and the electrical control equipment chamber, which solves the problem of insufficient gas-electric separation, and achieves the effect of further realizing gas-electric separation, ensuring the safety of electrical components, and facilitating wiring connection.

[0033] As a further embodiment of this utility model, the total path length of the extended air duct structure is ≥ twice the straight length of the airflow treatment cavity, so as to reduce the gas flow rate and extend the gas residence time; the baffle is integrally formed with the inner wall of the airflow treatment cavity, which solves the problems of insufficient gas residence and insufficient structural stability, and achieves the effect of ensuring sufficient gas residence, simplifying the structure and improving stability.

[0034] As a further embodiment of this utility model, the control module includes a control circuit board disposed within the cavity of the electrical control equipment. The signal input terminal of the control circuit board is directly connected to the output terminal of the wind-driven switch sensor body, and the signal input terminal is not provided with any communication interface or electrical connection structure for external signal cables. It only receives start / stop signals from the wind-driven switch sensor body, thereby eliminating dependence on the negative pressure system and realizing independent automatic start / stop control. The terminals of the ozone generator, the electric heater, and the electrical control box of the photohydrogen ion purifier are connected to the signal output terminal of the control circuit board, solving the problem that the control module is easily interfered with by the external negative pressure system, and achieving the effect of strengthening independent control capability and avoiding dependence on the negative pressure system.

[0035] As a further embodiment of this utility model, the outer wall of the housing is provided with control buttons that are connected to the control circuit board for easy manual control by the user.

[0036] As a further embodiment of this utility model, an openable door is provided on one side of the outer wall of the electrical control equipment cavity, and the control buttons are installed on the door, which solves the problems of inconvenient operation and difficult maintenance, and achieves the effect of facilitating manual control by users and maintenance of the components inside the electrical control equipment cavity.

[0037] As a further embodiment of this utility model, the wire through-hole extends coaxially towards the side of the electrical isolation cavity to form a fixed tube, and the inner wall of the fixed tube is provided with an internal thread; the wire seal includes a sealing nut, the outer wall of the sealing nut is provided with an external thread adapted to the internal thread of the fixed tube, and the sealing nut is detachably connected to the fixed tube through threaded engagement; one end of the wire passes through the sealing nut and is electrically connected to the wire, which solves the problem of inconvenient installation and maintenance of the wire seal, and achieves the effect of facilitating the installation, disassembly and maintenance of the sealed wire assembly while ensuring the airtightness of the airflow treatment cavity.

[0038] In summary, the advantages of this utility model compared to the prior art are as follows: This utility model addresses the core problems of existing disinfection and sterilization devices, such as reliance on fixed programs in negative pressure units for control, insufficient disinfection due to excessively high gas flow rates, corrosion risks caused by gas-electric mixing, and inconvenient maintenance. By introducing an airflow sensing module, it can perceive the gas flow status in real time and directly utilize the control module, achieving automatic start and stop of the entire device with the airflow. This completely eliminates the dependence on the program control of the negative pressure system, significantly improving the autonomy of control, response speed, and overall system reliability. Simultaneously, the airflow processing chamber is composed of multiple layers of baffles... The S-shaped extended air duct structure forces gas to flow along a longer, more tortuous path, effectively reducing flow velocity and extending its residence time within the processing chamber. A gas disinfection module is then positioned within this optimized path to ensure sufficient contact between disinfectant agents and microorganisms, thereby significantly improving disinfection and sterilization efficiency. Furthermore, the partitioned isolation chamber design strictly separates the airflow processing chamber, electrical isolation chamber, and electrical control equipment chamber, achieving complete gas-electric separation. This effectively prevents corrosive gases within the airflow processing chamber from damaging the electrical control components. Combined with a convenient, openable door design, this greatly simplifies the inspection, maintenance, and component replacement processes. Through the above technical solutions, this invention effectively solves the pain points of existing technologies, such as inability to adapt to complex operating environments, difficult maintenance, and low sterilization efficiency, ultimately achieving a comprehensive improvement in practicality, reliability, and safety. Attached Figure Description

[0039] Figure 1 This is a perspective view of the present invention.

[0040] Figure 2 This is a cross-sectional view of the airflow treatment cavity in this utility model.

[0041] Figure 3 for Figure 2 Enlarged cross-sectional view at point A in the middle.

[0042] Figure 4 This is a top-down cross-sectional view of the housing in this utility model.

[0043] Figure 5 This is one of the exploded views of the outer wall of the electrical isolation cavity and a schematic diagram of opening the cabinet door in this utility model.

[0044] Figure 6 This is the second schematic diagram of opening the box door of this utility model.

[0045] Explanation of reference numerals in the attached drawings: 1. Airflow processing chamber; 2. Electrical isolation chamber; 3. Electrical control equipment chamber; 4. Inlet pipe; 5. Outlet pipe; 6. Air duct extension structure; 6a. Baffle; 7. Gas disinfection module; 8. Airflow sensing module; 8a. Sensor probe; 8b. Wind-driven switch sensor body; 8c. Bracket; 9. Sealed wire assembly; 9a. Wire through hole; 9b. Wire A; 9c. Wire B; 10. Housing; 11. Control button; 12. Wire seal; 13. Fixing tube; 14. Sealing nut; 31. Control circuit board; 32. Door; 71. Ozone nozzle; 72. Electric heater; 72a. Heating tube; 72b. Terminal; 73. Photo-ion purifier; 73a. Electrical control box; 73b. Disinfection unit; 74. Ozone generator. Detailed Implementation

[0046] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0047] Furthermore, spatial terms may be used, such as "below," "lower," "from the inside out," "above," "upper," and similar terms. These relational terms are used to facilitate the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be rotated 90 degrees or otherwise to different orientations, and the spatially related adjectives used therein can be interpreted in the same way. Therefore, they should not be construed as limiting the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 6 The S-shaped air duct pneumatic switch sterilization device shown includes a rectangular box 10, the interior of which is divided into an independent airflow processing chamber 1, an electrical isolation chamber 2, and an electrical control equipment chamber 3 by vertical wall panels. An air inlet pipe 4 is vertically installed at the bottom center of the box 10, with its outlet end extending into the airflow processing chamber 1. An air outlet pipe 5 is vertically installed at the top center of the box 10, with its inlet end extending into the airflow processing chamber 1, forming an upward gas flow path.

[0049] Among them, such as Figure 2 As shown, an air duct extension structure 6 is provided inside the airflow treatment chamber 1. This air duct extension structure 6 consists of at least two baffles 6a. In this embodiment, one baffle 6a extends horizontally to the right from the left inner wall of the airflow treatment chamber 1, and another baffle 6a extends horizontally to the left from the right inner wall. The two sets of baffles 6a are arranged alternately, and there is a certain distance between the extension ends of each baffle 6a and the opposite inner wall of the airflow treatment chamber 1. This allows the air duct extension structure 6 inside the airflow treatment chamber 1 to form an S-shaped tortuous path, forcing the gas to enter from the inlet pipe 4 and flow sequentially along the wavy path of the S-shaped tortuous path. The total flow path length is twice the vertical length of the airflow treatment chamber. A gas disinfection module 7 is provided inside the airflow treatment chamber 1 to disinfect and sterilize the gas flowing through the air duct extension structure 6.

[0050] In this embodiment, the gas disinfection module 7 adopts a multi-level configuration, specifically including an ozone nozzle 71 located between the inlet end of the gas outlet pipe 5 and the adjacent lower baffle 6a, an electric heater 72 located between the two baffles 6a, and a photo-ion purifier 73 located between the outlet end of the gas inlet pipe 4 and the adjacent upper baffle 6a. In this embodiment, the ozone nozzle 71, the electric heater 72, and the photo-ion purifier 73 are all installed and fixed on the inner wall of one side of the airflow treatment chamber 1. An ozone generator 74 is installed in the electrical isolation chamber 2. The ozone generator 74 sprays the generated ozone gas from the ozone nozzle 71 into the airflow treatment chamber 1 through the pipeline. The heating tube 72a of the electric heater 72 is installed horizontally in the airflow treatment chamber 1, and its terminal 72b extends into the electrical isolation chamber 2 through the wall plate between the airflow treatment chamber 1 and the electrical isolation chamber 2. The disinfection unit 73b of the photo-ion purifier 73 is exposed in the airflow path in the airflow treatment chamber 1, and its electrical control box 73a is fixedly installed in the electrical isolation chamber 2. It should be noted that the gas disinfection module 7 can also be implemented by using one or a combination of two of the following: an ozone generator, an electric heater, and a photo-hydrogen ion purifier, depending on actual needs.

[0051] In addition, such as Figure 2 , Figure 3 and Figure 6As shown, an airflow sensing module 8 for detecting the inflow of gas is provided in the airflow processing chamber 1 near the air outlet of the air inlet pipe 4. The airflow sensing module 8 consists of a wind-driven switch sensor body 8b and a sensor probe 8a. The wind-driven switch sensor body 8b and the sensor probe 8a are interconnected by a sealed wire assembly 9. As can be clearly seen from the figure, in this embodiment, the sensor probe 8a of the airflow sensing module 8 is fixed to the bottom of the inner wall of the airflow processing chamber 1 on the side of the air outlet at the top of the air inlet pipe 4 by an inverted U-shaped bracket 8c, facing the direction of airflow inflow. The wind-driven switch sensor body 8b is fixedly installed on the bottom of the inner wall of the electrical isolation chamber 2. On the wall panel between the airflow processing chamber 1 and the electrical isolation chamber 2, and on the electrical isolation chamber 2, the sensor probe 8a is fixed to the bottom of the inner wall of the airflow processing chamber 1 near the air outlet of the air inlet pipe 4. The wall panel between the isolation chamber 2 and the electrical control equipment chamber 3 is provided with wire through holes 9a. The sealed wire assembly 9 passes through the wire through holes 9a at two locations and is connected at both ends to the sensor probe 8a and the wind-driven switch sensor body 8b, respectively. Specifically, the sealed wire assembly 9 includes a wire seal 12 disposed in the wire through hole 9a on the wall panel between the airflow treatment chamber 1 and the electrical isolation chamber 2, and a wire A9b with one end connected to the tail end of the wire seal 12 and the other end passing through the wire through hole 9a on the wall panel between the electrical isolation chamber 2 and the electrical control equipment chamber 3 and connecting to the signal input terminal of the wind-driven switch sensor body 8b. A wire B9c is connected to the tail end of the sensor probe 8a. The other end of wire B9c passes through the wire seal 12 and is electrically connected to wire A9b, so that the airflow signal collected by sensor probe 8a is transmitted through wire B9c to wire A9b, and then further transmitted through wire A9b to the wind-driven switch sensor body 8b. The signal output terminal of the wind-driven switch sensor body 8b is connected to the signal input terminal of the control module in the electrical control equipment cavity 3 via a cable. In this embodiment, the control module is a control circuit board 31 installed in the electrical control equipment cavity 3. Its signal input terminal is directly connected to the wind-driven switch sensor body 8b, and its output terminal is connected via a cable to the terminal 72b of the ozone generator 74, the electric heater 72, and the electrical control box 73a of the photo-hydrogen ion purifier 73. It should be noted that the signal input terminal of the control circuit board 31 does not have a communication interface or electrical connection structure for linkage with the negative pressure unit, thus eliminating dependence on the negative pressure system and realizing independent automatic start-stop control.

[0052] In addition, such as Figure 1 , Figure 5 and Figure 6 As shown, an openable door 32 is provided on one side of the outer wall of the electrical control equipment cavity 3. The door 32 is provided with a control button 11 that is connected to the control circuit board 31 for manual start / stop or mode switching.

[0053] It should also be noted that the wire seal 12 is used to ensure the airtightness of the airflow treatment chamber 1 and prevent gas leakage. In this embodiment, a commercially available screw-type power cord is used as an example. Specifically, it includes a fixed tube 13 that extends coaxially to the side of the wire through hole 9a facing the electrical isolation chamber 2. The inner wall of the fixed tube 13 is provided with internal threads. A sealing nut 14 is detachably inserted into the fixed tube 13. The sealing nut 14 is inserted into the fixed tube 13 through its cylindrical part at its front end. The outer wall of the cylindrical part is provided with external threads that are threaded together with the internal threads inside the fixed tube 13. The rear side of the cylindrical part of the sealing nut 14 is connected with a hexagonal nut with a diameter larger than that of the cylindrical part. After the cylindrical part is completely inserted into the fixed tube 13, the side wall of the hexagonal nut fits against the opening of the fixed tube 13, thereby sealing the wire through hole 9a of the airflow treatment chamber 1.

[0054] The working principle of this utility model is as follows: When gas flows into the airflow treatment chamber 1 from the inlet pipe 4, the sensor probe 8a detects the airflow signal and transmits the signal to the wind-driven switch sensor body 8b through wires B9c and A9b. The switch sensor body 8b sends a signal to trigger the control circuit board 31 to start the gas disinfection module 7: the ozone generator 74 releases ozone into the airflow treatment chamber 1 through the nozzle 71, the electric heater 72 heats up to the set temperature, and the photohydrogen ion purifier 73 emits ultraviolet light. The gas flows along the baffle 6a in an S-shaped tortuous path, and the flow velocity is higher than that of the straight-through structure, with the residence time extended to more than 8 seconds. After undergoing photohydrogen ion decomposition, ozone oxidation, and high-temperature inactivation in sequence, the gas is discharged from the outlet pipe 5.

[0055] When the airflow stops, the sensor probe 8a signal is interrupted, and the control circuit board 31 simultaneously shuts down all gas sterilization modules 7 to avoid idling and energy consumption. The electrical isolation chamber 2 achieves gas-electric separation, preventing humid gases from corroding the electronic control components, while the openable door 32 significantly improves maintenance efficiency.

[0056] The above embodiments fully present the structural layout, component connection logic, and working mechanism of an S-shaped duct extension structure and a gas disinfection module controlled by a wind-driven switch. Through the collaborative design of the S-shaped duct extension structure and independent airflow sensing control, the core problems of low processing efficiency, control dependence, and complex maintenance in the prior art are effectively solved.

[0057] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pneumatically operated disinfection and sterilization device with an S-shaped air duct, characterized in that, include: The enclosure (10) consists of mutually isolated airflow processing chamber (1), electrical isolation chamber (2) and electrical control equipment chamber (3); The air inlet pipe (4) and the air outlet pipe (5) are respectively connected to the top and bottom of the housing (10) and communicate with the airflow treatment chamber (1); The air duct extension structure (6) is set inside the airflow treatment chamber (1) and consists of at least two sets of baffles (6a). The two sets of baffles (6a) extend out parallel to each other from the inner walls of opposite sides of the airflow treatment chamber (1), forcing the gas entering from the inlet pipe (4) to flow through the airflow treatment chamber (1) in a significantly extended and tortuous path and then be discharged from the outlet pipe (5). The gas disinfection module (7) is set in the extended and tortuous gas path formed by the air duct extension structure (6) and is used to disinfect and sterilize the gas flowing through the path. The airflow sensing module (8) includes: The sensor probe (8a) is installed in the airflow processing chamber (1) near the air outlet of the inlet pipe (4) to detect the gas inflow status; The wind-driven switch sensor body (8b) is disposed inside the cavity (3) of the electrical control equipment; The sealed wire assembly (9) passes through the wall panel between the airflow treatment chamber (1) and the electrical isolation chamber (2), and between the electrical isolation chamber (2) and the electrical control equipment chamber (3), and its two ends are respectively connected to the sensor probe (8a) and the wind-driven switch sensor body (8b). The control module is located inside the cavity (3) of the electrical control equipment. Its signal input terminal is connected to the output terminal of the wind-driven switch sensor body (8b), and the signal output terminal of the control module is connected to the gas disinfection module (7).

2. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 1, characterized in that, Wire through holes (9a) are respectively provided on the wall panels located between the airflow processing chamber (1) and the electrical isolation chamber (2), and between the electrical isolation chamber (2) and the electrical control equipment chamber (3) to provide a through passage for the sealed wire assembly (9); The sealed wire assembly (9) includes: The wire seal (12) is disposed in the wire through hole (9a) on the wall panel between the airflow treatment chamber (1) and the electrical isolation chamber (2) to ensure the airtightness of the airflow treatment chamber (1) and prevent gas leakage. One end of the wire A (9b) is connected to the tail end of the wire seal (12), and the other end of the wire A (9b) passes through the wire through hole (9a) in the wall panel between the electrical isolation cavity (2) and the electrical control equipment cavity (3) and is connected to the signal input end of the wind-driven switch sensor body (8b). One end of wire B (9c) is connected to the tail end of the sensor probe (8a), and the other end of wire B (9c) passes through the wire seal (12) and is electrically connected to wire A (9b) so that the airflow signal collected by the sensor probe (8a) is transmitted to wire A (9b) through wire B (9c) and then further transmitted to the wind-driven switch sensor body (8b) through wire A (9b).

3. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 2, characterized in that, The gas disinfection module (7) includes an ozone nozzle (71), an electric heater (72), and a photohydrogen ion purifier (73) respectively disposed in the airflow processing chamber (1); the baffle (6a) is located between the ozone nozzle (71) and the electric heater (72), and between the electric heater (72) and the photohydrogen ion purifier (73), so that the gas passes through the airflow processing chamber (1) along an S-shaped path.

4. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 2, characterized in that, The gas disinfection module (7) includes at least one of an ozone nozzle (71), an electric heater (72), and a photohydrogen ion purifier (73), used to efficiently disinfect and sterilize the gas in the duct extension structure (6).

5. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 3, characterized in that, An ozone generator (74) is provided on the inner wall of the electrical isolation chamber (2). The outlet of the ozone generator (74) is connected to the ozone nozzle (71) through a pipeline. The heating tube of the electric heater (72) is placed in the airflow treatment chamber (1). The terminal passes through the wall panel of the airflow treatment chamber (1) and extends into the electrical isolation chamber (2). The disinfection unit of the photohydrogen ion purifier (73) is housed in the airflow treatment chamber (1). The electrical control box is set in the electrical isolation chamber (2) to achieve gas-electric separation. The terminal of the ozone generator (74), the electric heater (72) and the electrical control box of the photohydrogen ion purifier (73) are all connected to the signal output terminal of the control module in the electrical control equipment chamber (3) by cable through the wire hole (9a) between the electrical isolation chamber (2) and the electrical control equipment chamber (3).

6. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 1, characterized in that, The total path length of the air duct extension structure (6) is greater than twice the straight length of the airflow treatment cavity (1); the baffle (6a) is integrally formed with the inner wall of the airflow treatment cavity (1).

7. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 5, characterized in that, The control module includes a control circuit board (31) disposed in the cavity (3) of the electrical control equipment. The signal input terminal of the control circuit board (31) is directly connected to the output terminal of the wind-driven switch sensor body (8b). The signal input terminal is not provided with any communication interface or electrical connection structure of external signal cable. The terminals of the ozone generator (74), the electric heater (72) and the electrical control box of the photohydrogen ion purifier (73) are connected to the signal output terminal of the control circuit board (31).

8. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 7, characterized in that, The outer wall of the housing (10) is provided with control buttons (11) that are connected to the control circuit board (31) via signals.

9. The air-operated switch disinfection and sterilization device for an S-shaped air duct according to claim 8, characterized in that, The outer wall of the electrical control equipment cavity (3) is provided with an openable door (32), and the control button (11) is installed on the door (32).

10. A pneumatic switch disinfection and sterilization device for an S-shaped air duct according to claim 2, characterized in that, The wire through hole (9a) extends coaxially toward the electrical isolation cavity (2) to form a fixed tube (13), and the inner wall of the fixed tube (13) is provided with an internal thread; the wire seal (12) includes a sealing nut (14), the outer wall of the sealing nut (14) is provided with an external thread that matches the internal thread of the fixed tube (13), and the sealing nut (14) is detachably connected to the fixed tube (13) through a threaded fit; one end of the wire A (9b) passes through the sealing nut (14) and is electrically connected to the wire B (9c).

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