Disinfection device, disinfection structure and use method

Abstract

The invention discloses a disinfection device, and relates to a material or a general disinfection method or device. The invention relates to the field of disinfection of bandages, dressings, absorbent pads or surgical supplies, and discloses a disinfection box which comprises a box body, the supporting frame is fixedly mounted in the box body; the placing frame is mounted on the supporting frame and can slide from the supporting frame to the outside of the box body, and the upper part of the placing frame is used for placing equipment needing to be disinfected; and the disinfection part is arranged in the inner cavity of the box body, through holes which are uniformly distributed are formed in the upper part of the disinfection part, and the equipment can be disinfected in the radial direction of the placement rack. According to the device, the placement frame and the disinfection part are arranged, and the through holes which are uniformly distributed are formed in the disinfection part, so that when high-temperature airflow is jetted into the box body, the high-temperature airflow heats and disinfects equipment needing to be disinfected in the radial direction of the placement frame, and the jetting distance of hot airflow is obviously reduced. And the high-temperature loss of hot air flow can be reduced due to the small spraying distance, and the heating effect on equipment at the far end is better.

Description

Technical Field

[0001] The present invention relates to a general method or device for material or disinfection; the field of disinfection of bandages, dressings, absorbent pads or surgical supplies, and in particular to a disinfection device, a disinfection structure and a method of use. Background Art

[0002] Disinfection devices are widely used in the medical field, primarily for sterilizing medical devices. For example, high-temperature steam sterilizers utilize high-temperature, high-pressure saturated steam to kill microorganisms. They are suitable for heat- and moisture-resistant devices, offering excellent sterilization effectiveness and low cost, making them the most commonly used devices. Dry heat sterilizers, on the other hand, utilize high-temperature hot air (160-190°C) for extended periods of time to sterilize devices that are sensitive to moisture and heat or susceptible to steam corrosion. Both high-temperature steam and dry heat sterilizers utilize high temperatures to sterilize equipment. Both methods utilize high-pressure nozzles mounted on the side, bottom, or top of the sterilizer to spray high-temperature gas into the cabinet. However, this configuration creates a relatively long flow path for the high-temperature gas. The longer the spray distance, the lower the airflow temperature farther from the nozzle, resulting in less effective heating of equipment placed farther away from the nozzle, and less uniform disinfection of equipment within the cabinet. Summary of the Invention

[0003] The purpose of the present invention is to provide a disinfection device, a disinfection structure and a method of use to solve the technical problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a disinfection device comprising: The box body has a door body that is rotatably mounted on one side; The support frame is fixedly installed inside the box; The placement rack is installed on the support frame and can slide from the support frame to the outside of the box, and its upper part is used to place equipment that needs to be sterilized; The disinfection part is arranged in the inner cavity of the box body, and the upper part thereof is provided with evenly distributed through holes, which can disinfect the equipment in the radial direction of the placement rack.

[0005] Preferably, the support frame is fixedly mounted on a side of the box body where the door body is arranged.

[0006] Preferably, a camera is fixedly mounted on the inner wall of the box, with the camera's shooting portion facing the placement rack to take pictures of the equipment on the placement rack, identify the type of equipment, and select the disinfection time according to the type of equipment.

[0007] Preferably, a plurality of partition plates are fixedly mounted on the inner side of the placement rack to divide the placement rack into a plurality of areas.

[0008] A disinfection structure, applied to the above-mentioned disinfection device, comprising: A support plate is installed inside the box; The disinfection pipe is installed on the support plate. A through hole is opened on the disinfection pipe, and the through hole faces the equipment that needs to be disinfected.

[0009] Preferably, the support plate is rotatably mounted on the inner side wall of the box body, a connecting pipe is fixedly mounted at the rotation axis of the support plate, a disinfection pipe is fixedly mounted on the connecting pipe, the disinfection pipe is located at the circumference of the support plate, and wraps the support frame and the placement frame inside it; The driving device is used to rotate the support plate and the disinfection pipe, and the air flow is radially sprayed from the through hole to the inside of the placement rack to achieve disinfection of the equipment; The air inlet pipe is fixedly mounted on the inner wall of the box body and is rotatably plugged into the connecting pipe.

[0010] Preferably, the support plate is mounted on the inner side wall of the box body, and an air injection pipe is fixedly mounted at the axis of the support plate; A connecting pipe is fixedly installed at the axis of the placement rack. The connecting pipe is located at the intersection of multiple partition plates and is fixedly connected to the partition plates. When the placement rack is located inside the support rack, the connecting pipe and the jet pipe are plugged together to spray in the radial direction of the placement rack to achieve disinfection of the equipment.

[0011] Preferably, it also includes The volute is fixedly mounted in the inner cavity of the box, and the support plate is located in the volute; The centrifugal blade is coaxially arranged with the air injection pipe and is rotatably mounted inside the volute; The support frame is fixedly installed on the side where the door of the box is set; A driving device, mounted on the volute, for driving the centrifugal blades to rotate in the volute; The placement rack is located inside the centrifugal blade. When the centrifugal blade rotates, the air flow flows along the volute and is discharged. The air flow at the center flows outward, forming a pressure gradient to accelerate the air flow and achieve efficient disinfection of the equipment.

[0012] Preferably, the driving device includes Motor; A driving gear is fixedly connected to the output end of the motor; The driven gear ring meshes with the driving gear and is fixedly installed on one side of the centrifugal blade.

[0013] A method for using a disinfection device, using the above-mentioned disinfection structure, comprises the following steps: Pull out the placement rack, place the equipment to be sterilized neatly on the partition board, and push the placement rack into the interior of the box; The camera takes pictures of the equipment on the partition board, identifies the equipment, and automatically selects the disinfection time after determining the type of equipment; When disinfection begins, hot steam or hot air is introduced into the air inlet pipe inside the box. Then the centrifugal blades rotate and generate centrifugal force, creating negative pressure in the center of the volute, making it easier for hot steam or hot air to penetrate the equipment and flow outward.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes a storage rack and a disinfection unit with evenly distributed through-holes. When high-temperature airflow is injected into the cabinet, it heats and disinfects the equipment to be sterilized along the radial direction of the storage rack, significantly reducing the distance the hot airflow travels. For equipment placed far from the nozzle holes (i.e., through-holes), the shorter injection distance reduces heat loss from the hot airflow, resulting in a higher temperature at the distal equipment. This improves the heating effect, allowing the equipment to reach the desired temperature or the desired sterilization temperature more quickly, resulting in more uniform and consistent disinfection of the equipment within the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall structural diagram of Example 1 of the present invention; Figure 2 This is an overall structural diagram of Example 2 of the present invention; Figure 3 This is a schematic diagram of high-temperature airflow movement in Example 1 of the present invention; Figure 4 This is a schematic diagram of high-temperature airflow movement in Example 2 of the present invention; Figure 5 This is an overall structural diagram of Example 3 of the present invention; Figure 6 This is a structural diagram of the centrifugal blades, support frame and placement frame of the present invention; Figure 7 This is a schematic diagram of high-temperature airflow movement in Example 3 of the present invention.

[0016] In the figure: 1. Box body; 2. Volute; 3. Jet pipe; 4. Centrifugal blade; 5. Support frame; 6. Placement frame; 7. Connecting pipe; 8. Partition plate; 9. Slip ring; 10. Motor; 11. Driven gear ring; 12. Driving gear; 13. Inlet pipe; 14. Bearing; 15. Support plate; 16. Disinfection pipeline. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1 、 Figure 2 and Figure 5 As shown, this embodiment provides a disinfection device, including a housing 1. The housing 1 is designed as a rectangular parallelepiped structure. A circular placement opening is provided on one side of the housing 1, and a door is rotatably mounted on the side. The door can seal the placement opening. The interior of the housing 1 is a disinfection chamber, and medical devices that need to be disinfected are disinfected by passing through the placement opening into the interior of the housing 1.

[0019] One end of the support frame 5 is fixedly mounted on the inner wall of the box body 1 on one side of the opening. Figure 1 As shown, the support frame 5 is a cylindrical frame structure, and the other end of the support frame 5 is suspended, and a space is left between the side wall of the box body 1. The two ends of the support frame 5 are rings, and four sliding columns are fixedly installed between the two rings.

[0020] The placement frame 6 is installed in the inner cavity of the support frame 5 and is coaxially arranged with the support frame 5, such as Figure 1 and Figure 2 As shown, the placement rack 6 can slide from the placement opening of the support frame 5 to the outside of the box body 1. A slip ring 9 is fixedly mounted on the outer edge of one end of the placement rack 6 located deep inside the box body 1. The slip ring 9 is slidably mounted on the outer side of the slide column. When the placement rack 6 slides to the outside, the slip ring 9 is located at the edge of the slide column.

[0021] like Figure 1 As shown, the placement rack 6 is a cylindrical structure with evenly distributed ventilation holes (the placement rack 6 can also be configured as a grid structure). Four partitions 8 are fixedly mounted on its inner sidewall. The four partitions 8 are arranged vertically and divide the inner cavity of the placement rack 6 into four placement areas. The partitions 8 are also provided with evenly distributed air holes. The partitions 8 are used to place medical equipment that requires sterilization, such as scalpels, surgical scissors, hemostats, tweezers, orthopedic instruments, stainless steel trays, gauze, bandages, cotton balls, surgical gowns, surgical towels, rigid endoscopes, glassware (such as medicine cups, test tubes, culture dishes, glass bottles, Erlenmeyer flasks), and high-temperature resistant rubber products.

[0022] The disinfection part is provided with evenly distributed through holes, which serve as spray holes, and hot air can be sprayed out from the through holes of the disinfection part; the disinfection part is located inside the box body 1 and can sterilize medical equipment radially with the placement rack 6 as the center.

[0023] An air inlet pipe 13 is also installed in the inner cavity of the box body 1 for introducing air or steam into the interior of the box body 1 .

[0024] In this embodiment, the configuration of the air inlet pipe 13 varies depending on the type of high-temperature disinfection. When high-pressure steam sterilization is employed, the air inlet pipe 13 is connected to an external high-pressure steam boiler, which filters and supplies saturated steam. Alternatively, an electric heating device is fixedly installed within the inner cavity of the housing 1 to heat water and generate saturated steam. This is conventional technology and will not be described in detail here. This is similar to common high-pressure steam disinfection (moist heat disinfection) equipment on the market.

[0025] When dry heat disinfection and sterilization is adopted, a heating wire can be provided inside the box 1 to heat the gas inside the box 1, and the air heated by the air inlet pipe 13 is connected. The heating part and the part driving the air flow can be the same as the common dry heat sterilization boxes on the market, and will not be elaborated here.

[0026] A CCD industrial camera is fixedly installed on the inner wall of the box body 1, and the camera head is facing the placement rack 6, and can take pictures of the equipment on the placement rack 6. For example: the CCD camera is fixedly installed on the door body, and its shooting part is tilted downward to correspond to the inner cavity of the placement rack 6. The downward tilt angle can be adjusted according to the installation angle of the CCD camera, preferably 45 degrees. It should be noted that the inclination angle of the CCD camera cannot be too small (not less than 30 degrees). If the inclination angle is too small, the shooting angle is relatively small, and the equipment on the placement rack 6 is not fully photographed, which will cause inaccurate recognition problems.

[0027] Before the equipment is used, or during manufacturing, the relevant disinfection equipment is classified and the disinfection time is set. In this embodiment, the following exhaust-type high-temperature steam disinfection method is used as an example, as follows: Ordinary metal instruments, such as surgical scissors, scalpels, tweezers, hemostatic forceps, surgical trays, etc., have a shorter sterilization time and can be disinfected for 10 minutes at 121-126℃.

[0028] The sterilization time for endoscopic instruments, such as laparoscopic cannulas and ventilator tubing, is relatively long, requiring 20 minutes at 121-126°C. Glassware, such as medicine cups, test tubes, culture dishes, glass bottles, conical flasks, etc., should be sterilized at 121-126℃ for 15 minutes.

[0029] Dressings, such as gauze, bandages, cotton balls, etc., should be sterilized at 121-126℃ for 45 minutes.

[0030] Rubber products, such as rubber gloves, should be sterilized at 121°C for 15 minutes.

[0031] Based on the aforementioned classification, the various types of equipment are placed on rack 6 in sequence. A CCD industrial camera is used to capture at least two photos of the equipment, which are saved in the system for comparison. The corresponding disinfection times are then set accordingly. For example, common metal instruments such as surgical scissors, scalpels, tweezers, hemostats, and surgical trays are placed on rack 6, two photos are taken for comparison, and the corresponding disinfection temperature and time are set to 126°C and 10 minutes. Oral instruments such as laparoscopic cannulas and ventilator tubing are placed on rack 6, two photos are taken for comparison, and the corresponding disinfection temperature and time are set to 126°C and 20 minutes. Similarly, disinfection temperatures and times are set for glassware, dressings, rubber products, and other products. The system utilizes a convolutional neural network (CNN) for learning and configuration.

[0032] When sterilizing medical devices, the devices that need to be sterilized are classified, for example: the placement rack 6 is pulled out from the interior of the box 1, the medical metal devices that need to be sterilized are placed on the placement rack 6, and then the placement rack 6 is pushed into the interior of the box 1, and the door is closed; the CCD camera takes pictures of the equipment on the placement rack 6, takes at least two pictures, and identifies the objects in the pictures, compares the comparison pictures stored in the system one by one, thereby identifying the types of items in the pictures, and then determines the temperature and time for disinfection, and then automatic disinfection can be performed.

[0033] The specific process of the equipment is as follows: first, uniformly adjust the size of the image and annotate the pixel values to a fixed range (such as 0-1), enhance the image quality through filtering and denoising, and convert the color mode to grayscale. Use the Sobel operator to extract the outline of the object in the photo, and use the local binary pattern to identify the texture of the object in the photo. Use the SIFT algorithm to extract local features to obtain and identify the objects that need to be disinfected, and determine the temperature and time required for disinfection from the system.

[0034] This embodiment also discloses a disinfection structure for use in the aforementioned disinfection device to sterilize medical devices. Because both high-pressure steam disinfection and dry heat sterilization utilize the principle of high-temperature sterilization to destroy microbial proteins, nucleic acids, and cellular structures (such as bacterial cell walls), thereby killing the microorganisms and achieving a sterilization effect, they can effectively inactivate all microorganisms, including bacterial propagules, spores, fungal spores, and viruses. Furthermore, because both high-temperature, high-pressure steam and hot air are fluid and highly interchangeable, this disinfection structure can be used in both types of disinfection equipment.

[0035] like Figure 1 As shown, the disinfection structure includes: The support plate 15 is rotatably mounted on the inner wall of the box body 1 and is located in the space 1. The support plate 15 is a circular structure, and the support frame 5 is coaxially arranged.

[0036] The disinfection part is a disinfection pipe 16, which is provided with four disinfection pipes 16 and fixedly mounted on the support plate 15. The disinfection pipes 16 are located at the circumference of the support plate 15, such as Figure 1 As shown, a connecting pipe is fixedly installed at the rotating axis of the support plate 15, and the connecting pipe is plugged into the air intake pipe 13 to provide hot air flow to the connecting pipe, and a bearing 14 is installed between the two to enable the connecting pipe to rotate on the air intake pipe 13, and a sealing ring is provided at the bearing 14 to avoid or reduce leakage of air flow in the pipeline.

[0037] One end of the disinfection pipe 16 is attached to the support plate 15 and extends along the radial direction of the support plate 15 to communicate with the connecting pipe. The length of the disinfection pipe 16 along the axial direction of the support plate 15 is at least the same as the length of the placement rack 6. The four disinfection pipes 16 form a cylindrical wrapping portion, and the disinfection pipes 16 wrap the support rack 5 and the placement rack 6 inside. The disinfection pipes 16 are provided with a through hole facing the axis of the placement rack 6. When high-pressure steam or hot air is passed through the disinfection pipes 16, the hot air flow is radially sprayed from the through hole toward the interior of the placement rack 6 (i.e., toward the equipment on the placement rack 6), thereby disinfecting the medical equipment placed on the placement rack 6. Figure 3 shown.

[0038] The housing 1 is also provided with a driving device for rotating the support plate 15 and the sterilization pipe 16. The driving device includes a motor 10, which is preferably a servo motor. The housing of the motor 10 is fixedly mounted on the inner side wall of the side wall of the housing 1. The output end of the motor 10 is fixedly mounted with a driving gear 12, which is engaged with a driven gear ring 11. Figure 1 As shown, the driven gear ring 11 is fixedly mounted on the support plate 15 and is coaxially arranged with the support plate 15 and the air inlet pipe 13. The motor 10 rotates the support plate 15 through the meshing gear structure, and the support plate 15 rotates the disinfection pipe 16 synchronously.

[0039] like Figure 3 As shown, when the medical equipment on the rack 6 is sterilized, the hot air flow is sprayed from the edge of the circle to the center of the circle. Figure 3 As shown by the middle arrow B, the hot air flow is sprayed and disinfected in the radial direction, and the path through which the hot air flow passes is the radius of the placement rack 6, which reduces the flow path of the hot air flow, and the hot air flow finally converges at the center of the circle.

[0040] In current dry heat sterilization devices or high-pressure steam sterilization devices, when hot air flows in one direction or in opposite directions to sterilize equipment, it does not wrap the equipment. It takes a long time to reach the same temperature. The farther the distance, the greater the heat dissipation, the lower the temperature, and the lower the heating efficiency of the sterilized equipment. However, the hot air flow of the present application converges in a circular shape at the farthest end of the disinfection pipe 16. The hot air flow converges at the farthest end of the disinfection pipe 16, and multiple relatively low temperatures converge together to form a 360-degree wrap around the farthest equipment, heating the equipment to be sterilized in all directions, ensuring the heating effect at the farthest end, and forming a circular insulation layer to help heat the farthest equipment to the required temperature.

[0041] At the same time, the sterilization pipe 16 rotates along the circumferential direction following the support plate 15. Figure 3 As shown by the middle arrow A, dynamic heating of the items on the placement rack 6 can be achieved. At the same time, when the disinfection pipe rotates, it will also drive the flow of gas inside the box 1, increase the uniformity and uniformity of the temperature, and be more conducive to the heating treatment of the equipment that needs to be disinfected.

[0042] When the structure of this embodiment is installed in a high-pressure steam sterilization device, the air inlet pipe 13 is connected to the steam of an external high-pressure boiler. The saturated hot steam will enter the air inlet pipe 13 under the action of the internal pressure of the high-pressure filter. When used in a dry heat sterilization device, a fan is installed at the end of the air inlet pipe 13 to carry hot air into the air inlet pipe 13 and exhaust it from the air inlet pipe 13, so that the hot air inside the box 1 can enter the disinfection pipe 16 and be discharged, thereby achieving the disinfection of medical devices.

[0043] In a further embodiment, the difference from the above embodiment 1 is that: The center of the support plate 15 is fixedly mounted with an air jet pipe 3, which is provided with a plurality of evenly distributed exhaust holes. The air jet pipe 3 serves as a disinfection part, and the air jet pipe 3 is rotatably connected to the air inlet pipe 13. In this embodiment, a connecting pipe 7 is fixedly mounted at the center of the placement rack 6. The connecting pipe 7 is located at the intersection of a plurality of partition plates 8, and the connecting pipe 7 is also provided with evenly distributed air holes. The connecting pipe 7 can be connected to the outside of the air jet pipe 3, and the air jet pipe 3 can rotate inside the connecting pipe 7. The air jet pipe 3 ejects hot air radially outward, as shown in FIG. Figure 4 The path that the hot air flows through is the radius of the placement rack 6, and the path it passes through is relatively short. The hot air flow disinfects the equipment that needs to be disinfected in an outward divergent manner. When the air jet 3 rotates, it also drives the gas flow inside the box 1 to increase the temperature uniformity.

[0044] In a further embodiment, the air injection pipe 3 can also be configured as a stationary structure, such as Figure 2As shown, the support plate 15 is fixed to the inner wall of the box body 1, the jet pipe 3 is fixedly installed at the axis of the support plate 15, the support frame 5 is fixedly installed on the support plate 15, and the placement rack 6 is slidably installed on the support frame 5. In this embodiment, the hot air discharged from the jet pipe 3 is sprayed outward in a radial direction to the equipment to be sterilized, and can also be realized by flowing in the radial direction along the placement rack 6.

[0045] In this embodiment, if Figure 5 As shown, a volute 2 is fixedly installed inside the box body 1, and the exhaust port of the volute 2 is toward the bottom of the box body 1, and exhaust is toward the bottom. Moreover, since the density of cold air is relatively large, it will be located at the bottom. The bottom exhaust method can better carry the cold air flow.

[0046] The support plate 15 is located on the inner wall of the volute 2 and does not contact the inner wall of the volute 2. A space is left between the support plate 15 and the inner wall of the volute 2. A support frame 5 is fixedly installed on the support plate 15. The support frame 5 is fixedly connected to the support plate 15. The support frame 5 is fixedly installed on the inner wall of the placement port of the box body 1. The support frame 5 and the support plate 15 are in a suspended state inside the volute 2.

[0047] like Figure 5 and Figure 6 As shown, an air jet 3 is fixedly mounted at the axis of the support plate 15. The air jet 3 extends from the inner cavity of the volute 2 to the outside. When connected to an external high-pressure steam boiler, the air jet 3 extends directly to the outside of the housing 1 and connects to the high-pressure steam boiler. When using a heating wire, the air jet 3 only needs to extend from the volute 2 to the interior of the housing 1.

[0048] The placement rack 6 is located inside the centrifugal blade 4 and is coaxially arranged with the centrifugal blade 4 . A connecting pipe 7 is fixedly installed at the center of the placement rack 6 , and the connecting pipe 7 can be plugged into the air injection pipe 3 .

[0049] The centrifugal blade 4 is rotatably mounted inside the volute 2. One end of the centrifugal blade 4 is located in space 2 and is coaxially arranged with the air jet tube 3. An opening matching the air jet tube 3 is provided at one end of the centrifugal blade 4. The centrifugal blade 4 wraps the support frame 5 and the support plate 15 inside. A driving device is also fixedly mounted on the side wall of the volute 2, and the driving device is used to rotate the centrifugal blade 4 in the volute 2. Specifically, the driving device includes a motor 10, which is fixedly mounted on the side wall of the volute 2. The output end of the motor 10 passes through the side wall of the volute 2 and extends into the interior of the volute 2. A driving gear 12 is fixedly mounted on the output end of the motor 10. A driven gear ring 11 is fixedly mounted on one end of the centrifugal blade 4. The driven gear ring 11 is meshed with the driving gear 12. When the motor 10 rotates, it can rotate with the centrifugal blade 4. When the centrifugal blade 4 rotates, an outward centrifugal force is generated.

[0050] like Figure 7As shown, when the centrifugal blades 4 rotate, they will generate outward centrifugal force, as shown in FIG. Figure 7 As shown by the arrow C in the middle, the gas inside the placement rack 6 is sucked in and discharged through the volute 2, thereby forming a negative pressure inside the placement rack 6, which can discharge the air inside the equipment that needs to be sterilized placed on the placement rack 6. For example, when sterilizing medical dressings such as gauze, cotton balls and bandages, under the negative pressure of the centrifugal blades 4, the cold air inside the gauze, cotton balls and bandages will move into the volute 2 under the action of centrifugal force and be discharged from the volute 2. Figure 7 As shown by arrow D in the middle, the hot air flow enters the interior of the air jet pipe 3 through the air inlet pipe 13 and is discharged from the air jet pipe 3 onto the equipment to be sterilized. Due to the negative pressure at the equipment, the hot air flow can penetrate the equipment more effectively, improving the heating and disinfection effect on the equipment. In addition, the hot air flow entering the volute 2 flows along the edge of the inner cavity of the volute 2, forming a wrap around the volute 2, and providing a better insulation effect on the storage rack 6 inside the volute 2. Moreover, when the centrifugal blades 4 rotate, they carry the air on the placement rack 6 to the periphery, which is an active movement. Compared with the existing method of using exhaust holes to discharge the hot air flow into the interior of the box (i.e., strong blowing), when the hot air flow blows onto the equipment, it is generally difficult to squeeze the cold air in the equipment to the outside. The air can only be gradually heated, and a small amount of air will be blown away by the hot air flow, and the heating efficiency is low. The active suction movement extracts the cold air inside or between the equipment, and at the same time, the hot air flows to the surface or inside of the equipment. While extracting the gas between or inside the equipment, the hot air flow will enter between or into the equipment under the action of negative pressure. The two are carried out at the same time, and there is no need to discharge the cold air inside the equipment separately to allow the hot air flow to enter. The heating efficiency of the equipment is higher, the time for the equipment to be heated to the specified temperature can be shortened, and the disinfection efficiency is improved.

[0051] When the centrifugal blades 4 are working, they will carry the hot air flow to rotate inside the volute 2, such as Figure 7 As shown in E, when the hot air flow rotates inside the volute 2, it will penetrate the equipment inside the placement rack 6, thereby improving the penetration of the high-temperature air flow into the equipment. In addition, the rotating air makes the temperature inside the volute 2 more uniform, avoiding dead corners.

[0052] In addition, since the disinfection portion, i.e., the air jet 3, is located at the center of the rack 6 and also at the center of the centrifugal blade 4, when the centrifugal blade 4 rotates, the negative pressure generated acts on the air jet 3, making it easier for the air jet 3 to discharge the hot air into the interior of the rack 6, and can serve as a power source for the air flow of the air jet 3. Under the premise that a fan is installed inside the air inlet pipe 13 to help the air jet discharge the hot air, the negative pressure of the centrifugal blade 4 can assist the air flow and reduce the working intensity of the fan. Moreover, the high-temperature gas enters the interior of the centrifugal blade 4 through the air jet 3. The temperature is higher at the center of the centrifugal blade 4, close to the air source (i.e., the equipment on the rack 6 close to the center of the centrifugal blade 4). At the same time, the hot air flow near the center of the centrifugal blade 4 is relatively far from the inner wall of the volute 2 relative to the volute 2, and the speed along the circumference of the volute 2 is relatively slow, mainly under the centrifugal force. The closer the equipment on the rack 6 that needs to be disinfected is to the edge of the centrifugal blade 4, the farther it is from the air jet 3, and the lower the temperature of the hot air flow. However, the edge of the centrifugal blade 4 is also relatively close to the inner wall of the volute 2, as shown in FIG. Figure 7 As shown, under the rotation of the centrifugal blades 4 and the action of the volute 2, the hot air flow at the edge of the centrifugal blades 4 is accelerated, and the speed of the hot air flow along the circumferential direction of the volute 2 is greater than that at the center of the centrifugal blades 4. The greater the flow speed of the air flow, the more high-temperature gas will flow through the equipment quickly, and the better the heating effect of the equipment.

[0053] According to Fourier's law:

[0054] Where: is the amount of heat conducted per unit time; is the thermal conductivity of the material; is the heat transfer area; is the temperature gradient ( is the temperature difference, is the heat transfer distance).

[0055] Since the air flow moves in the volute 2, its heat transfer distance It is fixed. When the airflow speed is faster, the temperature loss of the high-temperature airflow in the volute 2 is smaller. That is, when the airflow passes through the equipment to be sterilized, the temperature of the airflow is relatively high. When the high-temperature airflow speed is slow, the temperature loss is large. It can be seen that the airflow flows quickly and its temperature is relatively high. The temperature difference between heating the equipment to be sterilized to the required temperature is The larger the diameter, the higher the heat transfer efficiency. The equipment at the edge of the centrifugal blade 4 can be heated to the desired temperature in a shorter time. When the hot air flow is ejected from the air nozzle 3 at the center of the centrifugal blade 4, it first flows in the radial direction of the centrifugal blade, heating and disinfecting the equipment near the center of the centrifugal blade 4. As the air flow moves outward, the air flow near the outside flows faster in the circumferential direction under the acceleration of the volute 2 and the centrifugal blade 4, heating the equipment at the edge to the desired disinfection temperature in a relatively short time.

[0056] In this embodiment, for the high-pressure steam sterilization device, a safety valve and an exhaust valve are set at the bottom of the inner cavity of the box body 1. When the volute 2 starts working, the cold air is extracted by the centrifugal blades 4 and discharged from the bottom outlet of the volute 2 to the interior of the box body 1. The exhaust valve can be opened to discharge the cold air, and the cold air inside the placement rack 6 can be collected and discharged in a unified manner.

[0057] For dry heat sterilization and disinfection equipment, electric heating wires are fixedly mounted on the housing 1 at the exhaust port of the volute 2 and at the bottom of the housing 1 to heat the internal gas. An air intake pipe 13 extends from the volute 2 into the inner cavity of the housing 1. When the centrifugal blades 4 operate, they generate negative pressure. Cold air discharged from the exhaust port of the volute 2 is heated by the electric heating wires before entering the air intake pipe 13, forming a circuit.

[0058] A solenoid valve is fixedly installed at one end of the air inlet pipe 13 outside the volute 2 to control the opening of the air inlet pipe 13. When first used, the solenoid valve can be closed to put the air inlet pipe 13 in a closed state. The centrifugal blades 4 are turned on to generate an outward centrifugal force, and the center of the volute 2 is in a negative pressure state (that is, the equipment on the placement rack 6 is in a negative pressure environment, and the equipment and the air inside the equipment are sucked in). At the same time, the volute 2 discharges cold air outward to the box 1. The discharged hot air flows through the electric heating wire and is heated, which can achieve preheating of the cold air. When the air is discharged into the box 1, high pressure is formed, while the inside of the volute 2 is low pressure, which increases the pressure gradient inside and outside the volute 2. When the solenoid valve is opened, under a larger pressure gradient, the hot air can enter the air inlet pipe 13 more quickly and be discharged from the air jet pipe 3 to heat and disinfect the equipment.

[0059] During operation, the solenoid valve can be closed and opened multiple times, so that the air between the equipment on the rack 6 inside the volute 2 or the air inside the equipment is frequently extracted and is in a negative pressure state. When the solenoid valve is opened, under the action of a larger pressure difference, the hot air flow can flow to the surface of the equipment faster, increasing the penetration of the hot air.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A disinfection device, characterized in that: include: The box body has a door body that is rotatably mounted on one side; A support frame, fixedly installed inside the box; A placement rack, mounted on the support frame and capable of sliding from the support frame to the outside of the box, with an upper portion thereof being used to place equipment that needs to be sterilized; The disinfection part is arranged in the inner cavity of the box body, and has evenly distributed through holes on its upper part, so that the equipment can be disinfected in the radial direction of the placement rack.

2. A disinfection device according to claim 1, characterized in that: The support frame is fixedly mounted on a side of the box body where the door body is arranged.

3. A disinfection device according to claim 2, characterized in that: A camera is fixedly mounted on the inner side wall of the box, with the shooting part of the camera facing the placement rack to take pictures of the equipment on the placement rack, identify the type of the equipment, and select the disinfection time according to the type of the equipment.

4. A disinfection device according to claim 1, characterized in that: A plurality of partition plates are fixedly installed on the inner side of the placement rack to divide the placement rack into a plurality of areas.

5. A disinfection structure, applied to the disinfection device according to claim 4, characterized in that: include: A support plate is installed inside the box; The disinfection pipe is installed on the support plate. A through hole is opened on the disinfection pipe, and the through hole faces the equipment that needs to be disinfected.

6. A disinfection structure according to claim 5, characterized in that: The support plate is rotatably mounted on the inner side wall of the box body, a connecting pipe is fixedly mounted on the rotation axis of the support plate, a disinfection pipe is fixedly mounted on the connecting pipe, the disinfection pipe is located at the circumference of the support plate, and wraps the support frame and the placement frame inside it; The driving device is used to rotate the support plate and the disinfection pipe, and the air flow is radially sprayed from the through hole to the inside of the placement rack to achieve disinfection of the equipment; The air inlet pipe is fixedly mounted on the inner wall of the box body and is rotatably plugged into the connecting pipe.

7. A disinfection structure according to claim 5, characterized in that: The support plate is mounted on the inner side wall of the box body, and an air injection pipe is fixedly mounted at the axis of the support plate; A connecting pipe is fixedly installed at the axis of the placement rack. The connecting pipe is located at the intersection of multiple partition plates and is fixedly connected to the partition plates. When the placement rack is located inside the support rack, the connecting pipe and the air jet pipe are plugged together to spray air in the radial direction of the placement rack to achieve disinfection of the equipment.

8. A disinfection structure according to claim 7, characterized in that: Also includes A volute is fixedly mounted in the inner cavity of the housing, and the support plate is located in the volute; The centrifugal blade is coaxially arranged with the air injection pipe and is rotatably mounted inside the volute; The support frame is fixedly mounted on the side of the box where the door is arranged; A driving device, mounted on the volute, for driving the centrifugal blades to rotate in the volute; The placement rack is located inside the centrifugal blade. When the centrifugal blade rotates, the air flow flows along the volute and is discharged. The air flow at the center flows outward, forming a pressure gradient to accelerate the air flow and achieve efficient disinfection of the equipment.

9. A disinfection structure according to claim 8, characterized in that: The driving device includes Motor; A driving gear is fixedly connected to the output end of the motor; The driven gear ring meshes with the driving gear and is fixedly installed on one side of the centrifugal blade.

10. A method for using a disinfection device, using the disinfection structure according to claim 9, characterized in that: The steps include: Pull out the placement rack, place the equipment to be sterilized neatly on the partition board, and push the placement rack into the interior of the box; The camera takes pictures of the equipment on the partition board, identifies the equipment, and automatically selects the disinfection time after determining the type of equipment; When disinfection begins, hot steam or hot air is introduced into the air inlet pipe inside the box. Then the centrifugal blades rotate and generate centrifugal force, creating negative pressure in the center of the volute, making it easier for hot steam or hot air to penetrate the equipment and flow outward.

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