A monitoring device for the hot air circulation duct of a disinfection cabinet

Abstract

This utility model relates to the field of disinfection equipment technology, and in particular to a monitoring device for a hot air circulation duct of a disinfection cabinet. The device includes a docking ring with threads, a mounting ring threadedly connected to the docking ring, several monitors mounted around the mounting ring, and several plates rotatably connected around the mounting ring. A windward plate is connected to the end of a telescopic plate away from the mounting ring. A compression rod is slidably connected inside each monitor, with the end of the compression rod away from the monitor rotatably connected to the windward plate. A first spring is installed inside the monitor, with one end connected to the compression rod. The monitor is wired to a disinfection cabinet controller. Through the cooperation of the monitor, compression rod, first spring, and pressure sensor, when the hot airflow pushes the windward plate, the windward plate causes the compression rod to slide within the monitor and compress the first spring, converting the air pressure signal into an electrical signal that is fed back to the controller. This achieves accurate monitoring of airflow and velocity, enabling dynamic calibration and adjustment of the duct flow rate.

Description

Technical Field

[0001] This utility model relates to the field of disinfection equipment technology, and in particular to a monitoring device for the hot air circulation duct of a disinfection cabinet. Background Technology

[0002] As an important hygiene guarantee device in modern catering, medical and public health fields, the core function of a disinfection cabinet is to inactivate pathogenic microorganisms on utensils, tableware and other items through high-temperature sterilization. High-temperature disinfection technology has become the mainstream technology solution for commercial and household disinfection equipment due to its advantages such as broad-spectrum bactericidal properties, no chemical residues, and ease of operation. According to standards, such equipment typically needs to maintain the internal temperature above 120℃ for 15-30 minutes to ensure effective killing of stubborn microorganisms such as spores and viruses.

[0003] Existing large-scale disinfection cabinets generally employ hot air circulation systems to improve disinfection efficiency and uniformity. This system uses a fan to drive heated air through a sealed duct, ensuring that the high-temperature airflow evenly penetrates all areas of the cabinet. To adapt to different load requirements, some high-end models have implemented zone control functionality. When items are concentrated in a specific area, the system can adjust the airflow path by regulating the duct's airflow guide structure, concentrating the hot air on the target area, thereby shortening local heating time and reducing overall energy consumption. This design has significant economic value in scenarios such as hotels and hospitals that require frequent handling of small batches of items.

[0004] However, existing zoning control technologies have key flaws. The initial settings of the duct adjustment mechanism rely on theoretical models and fixed parameters. In actual operation, manufacturing errors, assembly deviations, or structural deformation caused by long-term use often result in significant deviations between the set ventilation path and the actual airflow distribution. Moreover, factors such as fouling on the inner wall of the duct and the deterioration of fan performance can change the flow resistance characteristics. The existing system lacks a dynamic calibration mechanism, which causes the flow control accuracy to continuously decrease with the increase of usage time. This can easily cause the actual temperature curve of the target area to deviate from the preset program. It may result in some areas not reaching the sterilization temperature after the disinfection cycle ends, or excessively extended working time to compensate for the deviation, resulting in energy waste and increased equipment wear. Utility Model Content

[0005] To overcome the shortcomings of inaccurate settings and dynamic adjustments, this utility model provides a monitoring device for the hot air circulation duct of a disinfection cabinet, aiming to solve the above-mentioned shortcomings.

[0006] A monitoring device for a hot air circulation duct of a disinfection cabinet includes a docking ring connected to the air outlet port of the disinfection cabinet. The docking ring is threaded, and a mounting ring is threadedly connected to the docking ring. A plurality of monitors are mounted around the mounting ring. A plurality of telescopic plates are rotatably connected around the mounting ring. An air-facing plate is connected to the end of each telescopic plate away from the mounting ring. A pressure rod is slidably connected inside each monitor, and the end of the pressure rod away from the monitor is rotatably connected to the air-facing plate. A first spring is installed inside each monitor, with one end connected to the monitor and the other end connected to the pressure rod. A pressure sensor is installed in contact with the first spring. The monitor is wiredly connected to a disinfection cabinet controller.

[0007] In one embodiment, a telescopic rod is further included, with both ends of the telescopic rod slidably connected to the mounting ring. The telescopic rod consists of two mutually sliding round rods and a round tube. A second spring is provided inside the round tube, with one end of the second spring connected to the round rod.

[0008] In one embodiment, the outer ring of the mounting ring is surrounded by a plurality of locking rods, and a rubber rod is connected to one end of the locking rods facing the center point of the mounting ring. A compression ring is connected to one end of the mating ring facing the mounting ring. The compression ring and the rubber rods are compression-fitted together, and the contact surfaces of the compression ring and the rubber rods are both set as bevels.

[0009] In one embodiment, a flow guide surface is provided on the side of the docking ring that connects to the disinfection cabinet pipe.

[0010] In one embodiment, the docking ring and the outer ring of the mounting ring are engaged with a retaining strip, and the mounting ring has a plurality of grooves corresponding to the retaining strip.

[0011] In one embodiment, a temperature sensor is mounted on the side of the windward plate facing the docking ring, and the temperature sensor is wired to the monitor.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Through the cooperation of the monitor, the extrusion rod, the first spring and the pressure sensor, when the hot airflow pushes the windward plate, the windward plate drives the extrusion rod to slide in the monitor and compress the first spring. The pressure sensor detects the spring compression in real time and converts the wind pressure signal into an electrical signal to feed back to the controller, thereby realizing the accurate monitoring of wind force and flow rate, and achieving the purpose of dynamic calibration and dynamic adjustment of the air duct flow.

[0014] 2. Through the threaded connection structure of the mounting ring and the mating ring, combined with the synergistic effect of the extrusion ring, rubber rod, locking rod and clamping strip, the axial force is converted into the lateral preload by the inclined extrusion during installation, so that the threaded mating surfaces fit tightly. The clamping strip is used to rigidly constrain and strengthen the fixation, thereby eliminating the initial setting deviation and ensuring that the air duct adjustment mechanism is consistent with the actual airflow distribution. Attached Figure Description

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

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram showing the connection relationship between the first spring, the compression rod, and the telescopic plate of this utility model.

[0018] The markings in the diagram are as follows: 1-Matching ring, 101-Thread, 2-Mounting ring, 3-Crushing ring, 4-Rubber rod, 5-Locking rod, 6-Monitor, 7-First spring, 8-Crushing rod, 9-Telescopic plate, 10-Windproof plate, 11-Telescopic rod, 12-Second spring, 13-Guide surface, 14-Clamping strip, 15-Temperature sensor. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] Example: A monitoring device for the hot air circulation duct of a disinfection cabinet, such as... Figures 1-3 As shown, the device includes a docking ring 1, a thread 101, a mounting ring 2, a monitor 6, a first spring 7, a compression rod 8, a telescopic plate 9, and a wind-facing plate 10. The docking ring 1 is connected to the air outlet duct port of the disinfection cabinet. The docking ring 1 is provided with a thread 101. The mounting ring 2 is connected to the docking ring 1 with the thread 101. Several monitors 6 are mounted around the mounting ring 2. Several telescopic plates 9 are rotatably connected around the mounting ring 2. The end of the telescopic plate 9 away from the mounting ring 2 is connected to the wind-facing plate 10. The compression rod 8 is slidably connected inside the monitor 6. The sliding channel inside the monitor 6 is smoothed to reduce the friction of the compression rod 8. The end of the compression rod 8 away from the monitor 6 is rotatably connected to the wind-facing plate 10. The first spring 7 is provided inside the monitor 6. One end of the first spring 7 is connected inside the monitor 6, and the other end is connected to the compression rod 8. The monitor 6 is provided with a pressure sensor that contacts the first spring 7. The monitor 6 is wiredly connected to the disinfection cabinet controller.

[0021] like Figure 1 and Figure 2As shown, it also includes a telescopic rod 11 and a second spring 12. The two ends of the telescopic rod 11 are slidably connected to the mounting ring 2. The telescopic rod 11 is composed of two mutually sliding round rods and a round tube. The surface of the telescopic rod 11 is provided with anti-slip texture for easy gripping during operation. The second spring 12 is installed inside the round tube, and one end of the second spring 12 is connected to the round rod.

[0022] like Figures 1-3 As shown, it also includes a compression ring 3, a rubber rod 4, and a locking rod 5. Several locking rods 5 are connected around the outer ring of the mounting ring 2. The end of the locking rod 5 facing the center point of the mounting ring 2 is connected to the rubber rod 4. The end of the mating ring 1 facing the mounting ring 2 is connected to the compression ring 3. The compression ring 3 and the rubber rod 4 are compression-fitted, and the contact surfaces of both are set as inclined surfaces. The axial force is converted into the transverse preload through the inclined surface compression structure, eliminating the gap of the thread 101.

[0023] like Figure 2 As shown, it also includes a flow guide surface 13. The flow guide surface 13 is provided on the side of the docking ring 1 that is connected to the disinfection cabinet pipe. The flow guide surface 13 is a streamlined curved surface that smoothly transitions with the inner wall of the pipe.

[0024] like Figure 1 and Figure 2 As shown, it also includes a retaining strip 14. The outer rings of the mating ring 1 and the mounting ring 2 are jointly engaged with the retaining strip 14 through grooves. The mounting ring 2 has several grooves corresponding to the retaining strip 14.

[0025] like Figure 2 and Figure 3 As shown, it also includes a temperature sensor 15. The temperature sensor 15 is installed on the side of the windward plate 10 facing the docking ring 1. The temperature sensor 15 is wired to the monitor 6. The surface of the temperature sensor 15 is covered with a high-temperature resistant coating to extend its service life.

[0026] When installing the monitoring device, the operator first aligns the docking ring 1 with the air outlet of the disinfection cabinet and completes the initial positioning. Then, holding the telescopic rod 11, the operator inserts both ends of it into the preset sliding connection position of the mounting ring 2. By holding the middle of the telescopic rod 11 and slowly rotating the mounting ring 2, the mounting ring 2 is gradually screwed in along the thread 101 on the inner wall of the docking ring 1. During this process, the bottom surface of the rubber rod 4 at the end of the locking rod 5 gradually contacts the inclined surface of the contact surface of the compression ring 3. Under continuous rotation, the rubber rod 4 is elastically compressed by the inclined surface, and at the same time, the axial force is decomposed into a lateral thrust through the inclined surface conversion, so that the thread 101 mating surfaces of the docking ring 1 and the mounting ring 2 are tightly fitted, eliminating the risk of loosening caused by processing errors or assembly gaps. After the mounting ring 2 is tightened to the predetermined position, the operator inserts the retaining strip 14 into the common retaining groove of the outer ring of the docking ring 1 and the mounting ring 2. The rigid constraint of the retaining strip 14 further strengthens the axial fixation of the two. At this time, the telescopic rod 11 can be pulled out from the sliding connection position after compressing the second spring 12, avoiding interference with the airflow in the duct.

[0027] After the disinfection cabinet is started, the operator sets the target airflow distribution parameters through the control panel. When high-temperature hot air is ejected from the air duct, the guide surface 13 structure on the end face of the docking ring 1 rectifies the airflow, avoiding eddies or flow deviation caused by the pipe interface steps. After the hot airflow contacts the air intake plate 10, it pushes the plate to rotate outward, causing the connected telescopic plate 9 to compress synchronously. At the same time, the air intake plate 10 drives the compression rod 8 to slide into the monitor 6 through the rotating connection structure. The compression rod 8 compresses the first spring 7 and keeps its end in continuous contact with the pressure sensor. The eight monitors 6 synchronously collect wind pressure data at different locations based on the difference in the compression of the first spring 7. After being converted into wind speed and flow information by the controller, the opening and closing angles of the electric dampers in each air duct are dynamically adjusted to optimize the hot air circulation efficiency. During this process, the temperature sensor 15 on the side wall of the air intake plate 10 monitors the airflow temperature in real time and feeds the data back to the controller to assist in adjusting the power of the heating module, ensuring coordinated control of disinfection temperature and time.

[0028] When the monitoring device needs to be disassembled, the operator first removes the retaining strip 14 to release the axial constraint between the docking ring 1 and the mounting ring 2. Then, using a tool, slightly loosens the locking rod 5, gradually releasing the contact force between the rubber rod 4 and the inclined surface of the compression ring 3. Finally, the telescopic rod 11 is reinserted into the sliding connection position of the mounting ring 2 and the second spring 12 is compressed. The rigid support of the telescopic rod 11 causes the threaded 101 mating surface between the mounting ring 2 and the docking ring 1 to slightly separate. At this point, the mounting ring 2 can be smoothly rotated to complete the disassembly. The entire process requires no additional tools and will not damage the duct structure.

[0029] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A monitoring device for the hot air circulation duct of a disinfection cabinet, characterized in that, The system includes a docking ring (1) connected to the air outlet duct port of the disinfection cabinet. The docking ring (1) is provided with a thread (101). An installation ring (2) is threaded (101) connected to the docking ring (1). Several monitors (6) are mounted around the installation ring (2). Several telescopic plates (9) are rotatably connected around the installation ring (2). A wind-facing plate (10) is connected to the end of the telescopic plate (9) away from the installation ring (2). A squeezing rod (8) is slidably connected inside the monitor (6). The end of the squeezing rod (8) away from the monitor (6) is rotatably connected to the wind-facing plate (10). A first spring (7) is provided inside the monitor (6). One end of the first spring (7) is connected inside the monitor (6), and the other end is connected to the squeezing rod (8). A pressure sensor that contacts the first spring (7) is provided in the monitor (6). The monitor (6) is wired to the disinfection cabinet controller.

2. The monitoring device for the hot air circulation duct of a disinfection cabinet as described in claim 1, characterized in that, It also includes a telescopic rod (11), the two ends of which are slidably connected to the mounting ring (2). The telescopic rod (11) is composed of two mutually sliding round rods and a round tube. A second spring (12) is provided inside the round tube, and one end of the second spring (12) is connected to the round rod.

3. The monitoring device for the hot air circulation duct of a disinfection cabinet as described in claim 2, characterized in that, The mounting ring (2) is surrounded by several locking rods (5). One end of each locking rod (5) facing the center point of the mounting ring (2) is connected to a rubber rod (4). The end of the mating ring (1) facing the mounting ring (2) is connected to a compression ring (3). The compression ring (3) and the rubber rod (4) are pressed together, and the contact surfaces of the compression ring (3) and the rubber rod (4) are both set as inclined surfaces.

4. The monitoring device for the hot air circulation duct of a disinfection cabinet as described in claim 3, characterized in that, The docking ring (1) is provided with a flow guide surface (13) on the side connected to the disinfection cabinet pipe.

5. The monitoring device for the hot air circulation duct of a disinfection cabinet as described in claim 4, characterized in that, The docking ring (1) and the outer ring of the mounting ring (2) are engaged with a retaining strip (14), and the mounting ring (2) has several grooves corresponding to the retaining strip (14).

6. The monitoring device for the hot air circulation duct of a disinfection cabinet as described in claim 5, characterized in that, A temperature sensor (15) is installed on the side of the windward plate (10) facing the docking ring (1), and the temperature sensor (15) is wired to the monitor (6).

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