Medical vacuum drying cabinet

Abstract

The utility model relates to a medical vacuum drying cabinet belongs to vacuum drying cabinet technical field. Including main frame (8) and the cabin (6) of setting in main frame (8), be provided with vacuum pump (9) for carrying out the vacuumizing operation to cabin (6) in main frame (8), it is characterized by: setting in cabin (6) has the article placing subassembly (17), article placing subassembly (17) includes fixed plate (22) and the floating plate (18) for placing instrument, be provided with weighing sensor (24) in fixed plate (22), the floating plate (18) sets up at the surface of weighing end of weighing sensor (24), and the floating plate (18) floating cover sets up at the surface of fixed plate (22). In the medical vacuum drying cabinet of the application, by setting weighing sensor in the cabin, the drying end time of instrument is judged by the way of weighing, which helps to optimize the drying process and avoid the occurrence of insufficient drying or over-drying.

Description

Technical Field

[0001] A medical vacuum drying cabinet, belonging to the field of vacuum drying cabinet technology. Background Technology

[0002] Currently, medical vacuum drying cabinets are commonly used in the medical field for drying surgical instruments, glassware, and other items. Their purpose is to remove moisture from the surface and interior of the instruments, thereby improving sterilization efficiency. During operation, a vacuum process is performed within the chamber to create a negative pressure environment, which helps lower the boiling point of water stains on the instrument surface and accelerates drying. However, traditional medical vacuum drying cabinets generally suffer from the following problems: (1) Traditional medical vacuum drying cabinets have fixed drying times or different drying times for different types of instruments. However, after the instruments are cleaned and disinfected, the water stains remaining on their surfaces, especially the water stains remaining inside the lumen of tubular instruments, are different. Therefore, the traditional working mode is prone to insufficient or excessive drying.

[0003] (2) Traditional medical vacuum drying cabinets require heating. The mainstream heating methods are as follows: 1) Heating method using a heater, such as the technical solution recorded in the Chinese utility model patent with application number 201921175732.9, application date July 24, 2019, entitled "Constant Temperature Vacuum Drying Cabinet Side Wall Insulation Structure"; the technical solution recorded in the Chinese invention patent with application number 202110364211.3, application date April 4, 2021, entitled "Water-cooled Vacuum Dryer"; and the technical solution recorded in the Chinese utility model patent with application number 202223552220.4, application date December 30, 2022, entitled "New Vacuum Drying Box". 2) Heating method using a heater and a fan. For example, the technical solutions described in Chinese invention patent application number 201810868323.0, application date August 2, 2019, entitled "Double-compartment vacuum drying cabinet and method of drying therewith"; the technical solutions described in Chinese utility model patent application number 201922277074.0, application date December 17, 2019, entitled "An electric heating blower drying"; and the technical solutions described in Chinese utility model patent application number 202123121971.6, application date December 14, 2021, entitled "Multifunctional vacuum drying oven".

[0004] Since medical vacuum drying cabinets require vacuuming of the chamber during use, the heating methods mentioned above, whether heating the chamber walls or heating the chamber with hot air, are insufficient to achieve the desired heating effect. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a medical vacuum drying cabinet that uses a weighing sensor installed in the chamber to determine the drying end time of the instrument by weighing, which helps to optimize the drying process and avoid insufficient or excessive drying.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: the medical vacuum drying cabinet includes a main frame and a chamber set in the main frame. A vacuum pump for evacuating the chamber is set in the main frame. The feature is that a storage component is set in the chamber. The storage component includes a fixed plate and a floating plate for placing instruments. A weighing sensor is set in the fixed plate. The floating plate is set on the surface of the weighing end of the weighing sensor and floats on the surface of the fixed plate.

[0007] Preferably, a weighing through hole is provided in the middle of the fixed plate, and the weighing sensor is installed at the bottom of the fixed plate through a weighing bracket. The weighing end of the weighing sensor passes through the weighing through hole and protrudes from the surface of the fixed plate.

[0008] Preferably, the fixing plate is fixed to the inner wall of the cabin, and both sides of the fixing plate are spaced apart from the inner wall of the corresponding side of the cabin, and the side of the floating plate is located in the gap between the fixing plate and the cabin.

[0009] Preferably, the two sides of the fixing plate are bent vertically downward to form side plates, the distance between the two side plates is less than the width of the inner walls of the cabin on both sides, fixing holes are provided on the side plates on both sides, and fixing bolts fixed to the inner walls of the cabin are fixed through the fixing holes.

[0010] Preferably, the side of the floating plate is bent downward to form a surrounding plate, and a through groove is provided on the surrounding plate to correspond one-to-one with the fixing hole and to accommodate the fixing bolt.

[0011] Preferably, a heating film is provided at the bottom of the floating plate, and a temperature sensor is provided between the heating film and the floating plate.

[0012] Preferably, a return air mechanism is provided at the top of the compartment, and an exhaust mechanism is provided on one side of the bottom of the compartment. The exhaust mechanism is connected to the air inlet of the vacuum pump.

[0013] Preferably, the air return mechanism includes an air return pipe, one end of which is connected to the interior of the compartment, the other end of which is equipped with a filter, and an air return valve is installed in the middle of the air return pipe. The exhaust system includes an exhaust pipe, one end of which connects to the interior of the compartment, and the other end is connected to the air inlet of the vacuum pump via a pipeline. An exhaust valve is installed in the middle of the exhaust pipe.

[0014] Preferably, multiple compartments are arranged vertically side by side within the main frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are: In the medical vacuum drying cabinet of this application, by installing a weighing sensor in the chamber, the drying end time of the instrument is determined by weighing, which helps to optimize the drying process and avoid insufficient or excessive drying.

[0016] In the medical vacuum drying cabinet of this application, the heating film is attached to the bottom of the floating plate, while the instruments are placed on the surface of the floating plate, making the heating more direct. Attached Figure Description

[0017] Figure 1 This is an isometric drawing of a medical vacuum drying cabinet.

[0018] Figure 2 for Figure 1 The view after the side panel is omitted.

[0019] Figure 3 This is an isometric drawing of the chamber of a medical vacuum drying cabinet.

[0020] Figure 4 This is an exploded view of the storage components inside the compartment of a medical vacuum drying cabinet.

[0021] The components include: 1. Control system; 2. Cabinet door; 3. Side baffle; 4. Inspection door; 5. Bottom wheels; 6. Cabin; 7. Support frame; 8. Main frame; 9. Vacuum pump; 10. Filter; 11. Return air valve; 12. Humidity detector; 13. Exhaust valve; 14. Exhaust pipe; 15. Temperature switch; 16. Cabin body; 17. Storage assembly; 18. Floating plate; 19. Heating film; 20. Transparent slot; 21. Temperature sensor; 22. Fixing plate; 23. Weighing through hole; 24. Weighing sensor; 25. Weighing bracket; 26. Fixing hole. Detailed Implementation

[0022] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0023] like Figures 1-2 As shown, a medical vacuum drying cabinet includes a main frame 8, which is arranged vertically. Bottom wheels 5 are provided at the four corners of the bottom of the main frame 8 to facilitate the movement of the medical vacuum drying cabinet.

[0024] The interior of the main frame 8 is the working chamber of this medical vacuum drying cabinet. Side baffles 3 are provided on both sides of the main frame 8 to cover the working chamber. Inside the working chamber, a support frame 7 is fixedly installed on the main frame 8, and multiple compartments 6 are vertically fixed inside the support frame 7.

[0025] On the front and rear ends of the main frame 8, multiple cabinet doors 2 are vertically arranged, with the number of cabinet doors 2 on each end face corresponding to the number of compartments 6. On the front and rear ends of the main frame 8, two cabinet doors 2 at the same height form a group, with the two cabinet doors 2 in the same group facing the front and rear ports of the corresponding compartments 6 respectively. The opening and closing of each compartment 6 is achieved through the two cabinet doors 2 at the front and rear of each compartment 6.

[0026] Inspection doors 4 are provided on at least one end face at the front and rear of the main frame 8, located below the cabinet door 2. The inspection doors 4 correspond to the electrical cavity on the inner side of the main frame 8, which is located below the support frame 7. A vacuum pump 9 is installed inside the electrical cavity. The inlet of the vacuum pump 9 is connected to each of the upper chambers 6 via pipes, enabling vacuuming of each chamber 6. The outlet of the vacuum pump 9 is connected to the side baffle 3 or the bottom plate via pipes, and the gas output by the vacuum pump 9 is discharged through openings in the side baffle 3 or the bottom plate.

[0027] On the front surface of the main frame 8, a control system 1 is also provided. The control system 1 includes a touch screen and a main controller located on the upper part of the front surface. The main controller is connected to the touch screen. The main controller is also connected to the vacuum pump 9 and is used to control the operation of the vacuum pump 9.

[0028] like Figure 3 As shown, the compartment 6 includes a body 16 with openings at both ends, and the openings at both ends of the body 16 correspond to cabinet doors 2 on both sides. Similar to the prior art, the body 16 preferably adopts a double-layer structure with inner and outer shells fitted together, and thermal insulation material is provided between the inner and outer shells.

[0029] A return air mechanism is provided on one side of the top of the cabin 16. The return air mechanism includes a return air pipe, one end of which is connected to the interior of the cabin 16, and the other end is equipped with a filter 10. A return air valve 11 is installed in the middle of the return air pipe. The control terminal of the return air valve 11 is connected to the main controller, and is controlled by the on / off state of the main controller and the return air valve 11.

[0030] An exhaust mechanism is provided on one side of the bottom of the cabin 16. The exhaust mechanism includes an exhaust pipe 14, one end of which connects to the interior of the cabin 16, and the other end is connected to the air inlet of the vacuum pump 9 via a pipeline. An exhaust valve 13 is installed in the middle of the exhaust pipe 14. The control terminal of the exhaust valve 13 is connected to the main controller, and is controlled by the on / off state of the exhaust valve 13 through the main controller.

[0031] A humidity detector 12 is also installed on the top of the cabin 16. The signal output terminal of the humidity detector 12 is connected to the signal input terminal of the main controller. A temperature switch 15 is also installed on the outer wall of the cabin 16. The humidity detector 12 is a high-precision humidity detector, which has the advantages of higher detection accuracy and faster response compared with traditional humidity sensors. The return air valve 11 and the exhaust valve 13 are both solenoid valves commonly used in the art. The connection between the main controller and the solenoid valves, as well as the control of the corresponding solenoid valves, are common knowledge in the art and will not be described in detail here.

[0032] A storage assembly 17 is horizontally arranged in the middle of the inner cavity of the chamber 16. The storage assembly 17 is arranged along the length of the chamber 16. When this medical vacuum drying cabinet is working, the instruments to be dried are placed on the surface of the storage assembly 17. Figure 4 The storage assembly 17 includes a fixing plate 22. The two sides of the fixing plate 22 are bent downwards vertically to form side plates, and multiple fixing holes 26 are sequentially formed on the side plates. The fixing plate 22 is fixed to the compartment 16 using several fixing bolts (not shown in the figure) corresponding to the fixing holes 26. In the fixing plate 22, the distance between the two side plates is less than the distance between the inner walls of the two sides of the compartment 16. Therefore, after the fixing plate 22 is fixed, a gap still exists between the side plates on both sides of the fixing plate 22 and the corresponding sides of the compartment 16.

[0033] A weighing through hole 23 is provided in the middle of the fixed plate 22. A weighing bracket 25 is installed at the bottom of the fixed plate 22. A weighing sensor 24 is placed inside the weighing bracket 25. After the weighing bracket 25 is fixed to the bottom of the fixed plate 22, the weighing end of the top of the weighing sensor 24 passes upward through the weighing through hole 23 and protrudes from the upper surface of the fixed plate 22. At this time, the weighing sensor 24 is simultaneously clamped between the weighing bracket 25 and the fixed plate 22.

[0034] A heating film 19 is attached to the bottom surface of the floating plate 18 by means of adhesive, and a temperature sensor 21 is placed between the heating film 19 and the floating plate 18. The signal output terminal of the temperature sensor 21 is connected to the main controller through a wire. The heating film 19 is implemented using a PTC film known in the art.

[0035] A floating plate 18 is also provided on the upper part of the fixed plate 22. The four edges of the floating plate 18 are bent vertically downward to form a surrounding plate. At the edges of the surrounding plates on both sides in the length direction, there are through grooves 20 that correspond one-to-one with the fixing holes 26 of the side plate of the fixed plate 22.

[0036] The floating plate 18 is placed on top of the fixed plate 22. At this time, the side panels of the floating plate 18 along its length are respectively inserted into the gaps between the side panels of the fixed plate 22 and the inner wall of the chamber 16. Meanwhile, the through slot 20 is engaged with the outside of the fixing bolts used to fix the fixed plate 22. Before the fixing bolts reach the top of the through slot 20, the bottom of the floating plate 18 first contacts the weighing end of the load cell 24, so that the floating plate 18 is set on the upper part of the fixed plate 22 in a floating state. Furthermore, the floating plate 18, the heating film 19, and the temperature sensor 21 are placed on the surface of the weighing end of the load cell 24, so that after zeroing the weight, the instruments on the surface of the floating plate 18 can be weighed.

[0037] The specific working process and working principle are as follows: The operator opens cabinet door 2, places the instruments to be dried into chamber 16, and positions them on the surface of floating plate 18 before closing cabinet door 2. The operator then sets the instrument type via the touchscreen in control system 1. The main controller in control system 1 connects the power supply circuits to vacuum pump 9 and heating film 19, initiating their operation. Simultaneously, the main controller activates the exhaust valve 13 at the top of the corresponding chamber 16, initiating a vacuum pump operation. At the same time, the main controller reads the initial parameters (temperature, weight, and humidity) within chamber 6 after the instruments are placed in chamber 6 via humidity detector 12 and weighing sensor 24, and controls the operation of heating film 19 through a preset program to ensure heat output and maintain a stable temperature.

[0038] The main controller estimates the drying time based on data from humidity detector 12 and a preset model. The model takes into account the type of equipment, initial humidity, and temperature, and dynamically adjusts the time threshold. For example, if the initial humidity is high, the estimated time is extended.

[0039] During the drying process, the main controller monitors the relevant data in real time and adjusts the drying time according to changes in humidity data. It also determines the end of the drying process by monitoring changes in weight data from the 24-hour weighing sensor; for example, if the weight change rate is below a set threshold and remains below that threshold for a certain period, the drying process is considered complete.

[0040] A temperature switch 15 is also installed on the outer wall of the cabin 16. The contacts of the temperature switch 15 are connected to the power supply circuit of the heating film 19. When the operating temperature of the temperature switch 15 is reached, it indicates that the temperature of the cabin 16 has reached the preset upper limit. At this time, the power supply circuit of the heating film 19 is cut off to avoid temperature runaway caused by the failure of the temperature sensor 21. Once the drying process is completed based on the weight data from the weighing sensor 24, the main controller stops the vacuum pump 9 and the heating film 19 from operating.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A medical vacuum drying cabinet, comprising a main frame (8) and a chamber (6) disposed within the main frame (8), and equipped with a vacuum pump (9) for evacuating the chamber (6), characterized in that: A storage assembly (17) is provided in the compartment (6). The storage assembly (17) includes a fixed plate (22) and a floating plate (18) for placing instruments. A weighing sensor (24) is provided in the fixed plate (22). The floating plate (18) is provided on the surface of the weighing end of the weighing sensor (24), and the floating plate (18) floats on the surface of the fixed plate (22).

2. The medical vacuum drying cabinet according to claim 1, characterized in that: A weighing through hole (23) is provided in the middle of the fixed plate (22). The weighing sensor (24) is installed at the bottom of the fixed plate (22) through the weighing bracket (25). The weighing end of the weighing sensor (24) passes through the weighing through hole (23) and protrudes from the surface of the fixed plate (22).

3. The medical vacuum drying cabinet according to claim 1 or 2, characterized in that: The fixing plate (22) is fixed to the inner wall of the compartment (6), and both sides of the fixing plate (22) are spaced apart from the inner wall of the corresponding side of the compartment (6). The side of the floating plate (18) is located in the gap between the fixing plate (22) and the compartment (6).

4. The medical vacuum drying cabinet according to claim 1 or 2, characterized in that: The two sides of the fixing plate (22) are bent vertically downward to form side plates. The distance between the two side plates is less than the width of the inner walls of the two sides of the compartment (6). Fixing holes (26) are provided on the side plates on both sides. Fixing bolts fixed to the inner walls of the compartment (6) are fixed through the fixing holes (26).

5. The medical vacuum drying cabinet according to claim 4, characterized in that: The side of the floating plate (18) bends downward to form a surrounding plate, and a through groove (20) is provided on the surrounding plate to correspond one-to-one with the fixing hole (26) and to accommodate the fixing bolt.

6. The medical vacuum drying cabinet according to claim 1, characterized in that: A heating film (19) is provided at the bottom of the floating plate (18), and a temperature sensor (21) is provided between the heating film (19) and the floating plate (18).

7. The medical vacuum drying cabinet according to claim 1, characterized in that: A return air mechanism is provided at the top of the compartment (6), and an exhaust mechanism is provided on one side of the bottom of the compartment (6). The exhaust mechanism is connected to the air inlet of the vacuum pump (9).

8. The medical vacuum drying cabinet according to claim 7, characterized in that: The gas return mechanism includes a gas return pipe, one end of which is connected to the interior of the compartment (6), and the other end is equipped with a filter (10). A gas return valve (11) is installed in the middle of the gas return pipe. The exhaust mechanism includes an exhaust pipe (14), one end of which is connected to the interior of the compartment (6), and the other end is connected to the air inlet of the vacuum pump (9) through a pipeline. An exhaust valve (13) is installed in the middle of the exhaust pipe (14).

9. The medical vacuum drying cabinet according to claim 1, characterized in that: Multiple compartments (6) are arranged vertically side by side within the main frame (8).

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