External sterilization system for isolator

Abstract

The invention relates to an external sterilization system for an isolator. The external sterilization system comprises an air inlet assembly, a first air pipe assembly and two groups of second air pipe assemblies, one end of the first air pipe assembly is connected with the air inlet assembly, and the other end of the first air pipe assembly is connected with an isolator; one ends of the two second air pipe assemblies are connected with the air inlet assembly, and the other ends of the two second air pipe assemblies are connected to the first air pipe assembly. The second air pipe assembly comprises a fan assembly, an air heating assembly and an evaporation assembly; one end of the fan assembly is connected with the air inlet assembly, the other end of the fan assembly is connected with the air heating assembly, the other end of the air heating assembly is connected with the evaporation assembly, and the other end of the evaporation assembly is connected to the first air pipe assembly. According to the external sterilization system for the isolator, the existing defects are overcome, the internal space of the isolator is saved, installation and maintenance are carried out externally, and the internal environment of the isolator is not affected.

Description

Technical Field

[0001] The invention relates to an external sterilization system for an isolator. Background Art

[0002] Most of the existing isolator hydrogen peroxide sterilization systems are integrated inside the isolator. However, due to the space limitation of the isolator static pressure box, the volume and evaporation capacity of a single evaporation structure are limited. A complete filling line isolation system needs to be equipped with a large number of evaporation units. Moreover, the evaporation unit is installed in the isolator static pressure box, which has a complex structure and is difficult to install and maintain. Some existing external hydrogen peroxide devices have a small evaporation capacity and are only suitable for single-chamber isolators.

[0003] Therefore, in view of the above problems, an external sterilization system for an isolator is proposed. Summary of the invention

[0004] The purpose of the present invention is to overcome the existing defects and provide an external sterilization system for an isolator, which saves the internal space of the isolator, and the installation and maintenance are carried out externally without affecting the internal environment of the isolator.

[0005] The technical solution to achieve the above object is: an external sterilization system for an isolator, comprising an air inlet assembly, a first air duct assembly and two sets of second air duct assemblies;

[0006] One end of the first air duct assembly is connected to the air inlet assembly, and the other end is connected to the isolator; one end of two groups of the second air duct assemblies are connected to the air inlet assembly, and the other ends of the two groups of the second air duct assemblies are connected to the first air duct assembly;

[0007] The second air duct assembly includes a fan assembly, an air heating assembly and an evaporation assembly; one end of the fan assembly is connected to the air inlet assembly, and the other end is connected to the air heating assembly, the other end of the air heating assembly is connected to the evaporation assembly, and the other end of the evaporation assembly is connected to the first air duct assembly.

[0008] Preferably, the air inlet assembly includes an air intake duct and an air intake chamber; the upper end of the air intake chamber is connected to the air intake duct, and the lower end is respectively connected to the first air duct assembly and two groups of the second air duct assemblies.

[0009] Preferably, the first air duct assembly includes a pressurized fan and a first pipe; the upper end of the pressurized fan is connected to the air intake chamber, and the other end is connected to the first pipe, and the other end of the first pipe is connected to an isolator.

[0010] Preferably, the fan assembly includes an air supply fan and a high temperature resistant silicone tube; the upper end of the air supply fan is connected to the air intake chamber, and the other end is connected to the high temperature resistant silicone tube, and the other end of the high temperature resistant silicone tube is connected to the air heating assembly.

[0011] Preferably, the air heating component comprises an air heating pipe, a heating core and a heating core insulation sleeve; one end of the air heating pipe is connected to the high temperature resistant silicone tube, and the other end is connected to the evaporation component; the heating core is arranged in the air heating pipe, and the heating core insulation sleeve is arranged between the heating core and the inner wall of the air heating pipe;

[0012] The air heating pipeline is also connected with an air heating temperature sensor.

[0013] Preferably, the evaporation component comprises an evaporation shell, one end of the evaporation shell is connected to the air heating pipe, and the other end is connected to the first pipe through a second pipe; the lower end of the inner wall of the evaporation shell is connected to the evaporation disk, the lower end of the inner wall of the evaporation shell is plugged with a rod-type air heater, the rod-type air heater is located below the evaporation disk, and the outer end of the rod-type air heater is connected to a second temperature sensor;

[0014] The top surface of the evaporation shell is connected with an evaporation chamber baffle, and the lower end of the evaporation chamber baffle contacts the evaporation plate;

[0015] A through atomizing nozzle is inserted on the top surface of the evaporation shell, and a peristaltic pump is connected to the upper end of the atomizing nozzle, and the peristaltic pump is connected to a hydrogen peroxide solution source.

[0016] Preferably, the first pipeline is also connected to a vortex flowmeter and a normally closed electric regulating ball valve.

[0017] Preferably, the heating core insulation sleeve is made of mica sheet.

[0018] Preferably, the surface of the evaporation plate is serrated, and the evaporation plate is made of aluminum.

[0019] Preferably, the number of the rod-type air heaters is four, and they are evenly connected to the lower end of the inner wall of the evaporation shell.

[0020] Preferably, a terminal temperature sensor is connected to the second pipeline.

[0021] The beneficial effects of the present invention are as follows: the external sterilization system for the isolator has a simple overall structure, and the main components are connected by clamps, which is convenient for installation and maintenance and can be quickly assembled when in use; compared with the existing integrated hydrogen peroxide sterilization system, it saves the internal space of the isolator, and the installation and maintenance are carried out externally, which has no effect on the internal environment of the isolator. The large evaporation volume can reduce the use of the original small evaporation plate, saving installation and material costs. The hydrogen peroxide vapor is distributed through pipelines, which effectively improves the stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1is a detailed view of the external sterilization system for an isolator of the present invention;

[0023] Figure 2 It is a top view of the interior of the external sterilization system for an isolator of the present invention;

[0024] Figure 3 is a detailed view of the evaporation shell of the present invention;

[0025] Figure 4 It is a schematic diagram of the principle of the present invention.

[0026] In the figure: 1. air intake duct; 2. pressurized fan; 3. air supply fan; 4. high temperature resistant silicone tube; 5. heating core; 6. heating core insulation sleeve; 7. air heating temperature sensor; 8. atomizing nozzle; 9. evaporation plate; 10. evaporation chamber baffle; 11. rod-type air heater; 12. second temperature sensor; 13. terminal temperature sensor; 14. vortex flowmeter; 15. normally closed electric regulating ball valve; 16. air intake chamber; 17. first pipeline; 18. air heating pipeline; 19. evaporation shell; 20. second pipeline. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figure 1-4 As shown, an external sterilization system for an isolator includes an air inlet assembly, a first air duct assembly and two groups of second air duct assemblies; one end of the first air duct assembly is connected to the air inlet assembly, and the other end is connected to the isolator; one end of the two groups of second air duct assemblies are connected to the air inlet assembly, and the other ends of the two groups of second air duct assemblies are connected to the first air duct assembly; the air inlet assembly includes an air intake duct 1 and an air intake chamber 16; the upper end of the air intake chamber 16 is connected to the air intake duct 1, and the lower end is respectively connected to the first air duct assembly and the two groups of second air duct assemblies.

[0030] Specifically, the first air duct assembly includes a pressurized fan 2 and a first pipe 17; the upper end of the pressurized fan 2 is connected to the air intake chamber 16, and the other end is connected to the first pipe 17, and the other end of the first pipe 17 is connected to the isolator. The first pipe 17 is also connected to a vortex flowmeter 14 and a normally closed electric regulating ball valve 15.

[0031] Specifically, the vortex flowmeter 14 monitors the output air flow of the entire system and is fixed to the output pipeline by a clamp.

[0032] Specifically, the normally closed electric regulating ball valve 15 is fixed at the end of the entire system by a clamp, which can achieve the shutoff and regulation effects. The ball valve is opened only when the sterilization process starts.

[0033] Specifically, the air intake duct 1 is connected with a quick-release interface, which is simple and convenient to install and disassemble, and the air intake position of this system can be selected according to actual needs by changing the air intake structure and pipeline guide at the interface.

[0034] Specifically, the pressurized fan 2 is mainly used to supply air to the sterilization system. An axial flow fan with large air volume and large pressure head is selected to effectively overcome the pipeline resistance and transport the hydrogen peroxide vapor to the isolation system.

[0035] like Figure 1 , 2 As shown, the second air duct assembly includes a fan assembly, an air heating assembly and an evaporation assembly; one end of the fan assembly is connected to the air inlet assembly, and the other end is connected to the air heating assembly, the other end of the air heating assembly is connected to the evaporation assembly, and the other end of the evaporation assembly is connected to the first air duct assembly.

[0036] Specifically, the fan assembly includes an air supply fan 3 and a high temperature resistant silicone tube 4; the upper end of the air supply fan 3 is connected to the air intake chamber 16, and the other end is connected to the high temperature resistant silicone tube 4, and the other end of the high temperature resistant silicone tube 4 is connected to the air heating assembly.

[0037] Specifically, the air supply fan 3 is an axial flow fan with a large pressure head, which delivers clean air to the air heating component and the evaporation component, and delivers the evaporated hydrogen peroxide vapor to the total output end of the sterilization system.

[0038] Specifically, the high temperature resistant silicone tube 4 connects the air supply fan 3 and the air heating component and is fixed by a stainless steel clamp. The flexible connection can reduce the impact of the fan vibration on the system sealing, and can also reduce the impact of the high temperature air of the air heating unit on the fan.

[0039] Specifically, the air heating component includes an air heating pipe 18, a heating core 5 and a heating core insulation sleeve 6; one end of the air heating pipe 18 is connected to the high-temperature resistant silicone tube 4, and the other end is connected to the evaporation component; a heating core 5 is arranged in the air heating pipe 18, and a heating core insulation sleeve 6 is arranged between the heating core 5 and the inner wall of the air heating pipe 18; the heating core insulation sleeve 6 is made of mica sheet.

[0040] Specifically, the air heating pipe 18 is also connected to an air heating temperature sensor 7. The air heating temperature sensor 7 monitors the air flow temperature after air heating, and sets a temperature upper limit of 160 degrees Celsius as a high temperature protection for the air preheating section. When the temperature exceeds the limit value, the heating core stops heating.

[0041] Specifically, the heating core 5 preheats the system air intake so that the air reaching the evaporation component always maintains a high temperature, which can increase the evaporation efficiency of the evaporation component and the stability of the evaporation temperature, and the constant output temperature can be achieved by adjusting the heating temperature here.

[0042] Specifically, the heating core insulation sleeve 6 is made of mica sheets, which can isolate the heat transfer between the heating core and the stainless steel pipe to prevent the pipe from overheating.

[0043] like Figure 3 As shown, the evaporation assembly includes an evaporation shell 19 , one end of the evaporation shell 19 is connected to the air heating pipe 18 , and the other end is connected to the first pipe 17 through the second pipe 20 ; the second pipe 20 is connected to the terminal temperature sensor 13 .

[0044] Specifically, the lower end of the inner wall of the evaporation shell 19 is connected to the evaporation disk 9, the surface of the evaporation disk 9 is serrated, and the evaporation disk 9 is made of aluminum. The lower end of the inner wall of the evaporation shell 19 is plugged with a rod-type air heater 11, which is located below the evaporation disk 9, and the outer end of the rod-type air heater 11 is connected to a second temperature sensor 12; there are four rod-type air heaters 11; they are evenly connected to the lower end of the inner wall of the evaporation shell 19.

[0045] Specifically, the top surface of the evaporation shell 19 is connected to the evaporation chamber baffle 10, and the lower end of the evaporation chamber baffle 10 contacts the evaporation plate 9;

[0046] Specifically, a penetrating atomizing nozzle 8 is inserted into the top surface of the evaporation shell 19 , and a peristaltic pump is connected to the upper end of the atomizing nozzle 8 , and the peristaltic pump is connected to a hydrogen peroxide solution source.

[0047] Specifically, the atomizing nozzle 8 mixes the hydrogen peroxide solution delivered by the peristaltic pump with compressed air and then sprays it out to achieve an atomization effect. The spraying effect of the nozzle is conical, which can effectively increase the heating efficiency and evaporation amount of the evaporation disk.

[0048] Specifically, the serrated surface of the evaporation plate 9 can increase the contact surface of hydrogen peroxide, and the aluminum evaporation plate has excellent thermal conductivity, which can increase the instantaneous evaporation amount of hydrogen peroxide, reduce the influence of the hydrogen peroxide solution temperature on the evaporation plate temperature, and reduce the temperature fluctuation range.

[0049] Specifically, the rod-type air heater 11 is installed on the aluminum evaporation shell 19 and is in direct contact with the evaporation plate. Four high-power heating rods can increase the evaporation amount of hydrogen peroxide, so that a single evaporation plate 9 can meet the maximum evaporation amount of 40g / min.

[0050] Specifically, the second temperature sensor 12 is inserted into the bottom of the evaporation tray 9 to monitor the surface temperature of the evaporation tray in real time, and adjusts the heating temperature of the evaporation tray through PID to keep the temperature of the evaporation tray constant at 150 degrees Celsius.

[0051] Specifically, the terminal temperature sensor 13 monitors the temperature of the hydrogen peroxide gas at the terminal outlet of the evaporation disk in real time, and controls the working temperature of the front heating core through this temperature to ensure the consistency of the output temperature of a single loop.

[0052] This external sterilization system for isolators has a simple overall structure. The main components are connected by clamps, which is convenient for installation and maintenance and can be quickly assembled when in use. Compared with the existing integrated hydrogen peroxide sterilization system, it saves the internal space of the isolator, and the installation and maintenance are carried out externally, which has no effect on the internal environment of the isolator. The large evaporation capacity can reduce the use of the original small evaporation plate, saving installation and material costs. The hydrogen peroxide vapor is distributed through pipelines, which effectively improves the stability of the system.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An external sterilization system for an isolator, characterized in that: It includes an air inlet assembly, a first air duct assembly and two sets of second air duct assemblies; One end of the first air duct assembly is connected to the air inlet assembly, and the other end is connected to the isolator; one end of two groups of the second air duct assemblies are connected to the air inlet assembly, and the other ends of the two groups of the second air duct assemblies are connected to the first air duct assembly; The second air duct assembly includes a fan assembly, an air heating assembly and an evaporation assembly; one end of the fan assembly is connected to the air inlet assembly, and the other end is connected to the air heating assembly, the other end of the air heating assembly is connected to the evaporation assembly, and the other end of the evaporation assembly is connected to the first air duct assembly.

2. The external sterilization system for an isolator according to claim 1, characterized in that: The air intake assembly comprises an air intake pipe (1) and an air intake chamber (16); the upper end of the air intake chamber (16) is connected to the air intake pipe (1), and the lower end is respectively connected to the first air duct assembly and two groups of the second air duct assemblies.

3. The external sterilization system for an isolator according to claim 2, characterized in that: The first air duct assembly comprises a pressurized fan (2) and a first pipe (17); the upper end of the pressurized fan (2) is connected to the air intake chamber (16), and the other end is connected to the first pipe (17); the other end of the first pipe (17) is connected to an isolator.

4. The external sterilization system for an isolator according to claim 3, characterized in that: The fan assembly comprises an air supply fan (3) and a high temperature resistant silicone tube (4); the upper end of the air supply fan (3) is connected to the air intake chamber (16), and the other end is connected to the high temperature resistant silicone tube (4); the other end of the high temperature resistant silicone tube (4) is connected to the air heating assembly.

5. The external sterilization system for an isolator according to claim 4, characterized in that: The air heating component comprises an air heating pipe (18), a heating core (5) and a heating core insulation sleeve (6); one end of the air heating pipe (18) is connected to the high temperature resistant silicone tube (4), and the other end is connected to the evaporation component; the heating core (5) is arranged in the air heating pipe (18), and the heating core insulation sleeve (6) is arranged between the heating core (5) and the inner wall of the air heating pipe (18); The air heating pipe (18) is also connected to an air heating temperature sensor (7).

6. The external sterilization system for an isolator according to claim 5, characterized in that: The evaporation assembly comprises an evaporation shell (19), one end of the evaporation shell (19) is connected to the air heating pipe (18), and the other end is connected to the first pipe (17) through a second pipe (20); the lower end of the inner wall of the evaporation shell (19) is connected to the evaporation disk (9), the lower end of the inner wall of the evaporation shell (19) is plugged with a rod-type air heater (11), the rod-type air heater (11) is located below the evaporation disk (9), and the outer end of the rod-type air heater (11) is connected to a second temperature sensor (12); The top surface of the evaporation shell (19) is connected to an evaporation chamber baffle (10), and the lower end of the evaporation chamber baffle (10) contacts the evaporation plate (9); A through-type atomizing nozzle (8) is inserted on the top surface of the evaporation shell (19), and a peristaltic pump is connected to the upper end of the atomizing nozzle (8), and the peristaltic pump is connected to a source of hydrogen peroxide solution.

7. The external sterilization system for an isolator according to claim 3, characterized in that: The first pipeline (17) is also connected to a vortex flowmeter (14) and a normally closed electric regulating ball valve (15).

8. The external sterilization system for an isolator according to claim 5, characterized in that: The heating core insulation sleeve (6) is made of mica sheets.

9. The external sterilization system for an isolator according to claim 6, characterized in that: The surface of the evaporation plate (9) is serrated, and the evaporation plate (9) is made of aluminum.

10. The external sterilization system for an isolator according to claim 6, characterized in that: The number of the rod-type air heaters (11) is four, and they are evenly connected to the lower end of the inner wall of the evaporation shell (19).

11. The external sterilization system for an isolator according to claim 6, characterized in that: The second pipe (20) is connected to a terminal temperature sensor (13).

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