CN101979099A

CN101979099A - Hydrogen peroxide low-temperature plasma sterilization machine

Info

Publication number: CN101979099A
Application number: CN2010105287993A
Authority: CN
Inventors: 李曙光; 邵汉良
Original assignee: Individual
Current assignee: Li Shuguang
Priority date: 2010-11-03
Filing date: 2010-11-03
Publication date: 2011-02-23
Anticipated expiration: 2030-11-03
Also published as: CN101979099B

Abstract

The invention relates to a hydrogen peroxide low-temperature plasma sterilization machine. The sterilization machine comprises a machine body, a cylinder body, an inner cylinder, a vacuuming port, a control system, a power supply, a hydrogen peroxide filling port, a programmable controller, an air inlet and an air outlet, wherein the cylinder body is arranged on the machine body; all the vacuuming port, the air inlet, the air outlet and the hydrogen peroxide filling port are communicated with an inner chamber of the cylinder body by pipelines which are provided with valves; the inner cylinder is arranged in the cylinder body by a support block; brackets are arranged in the inner cylinder; the inner cylinder consists of an inner cylinder wall and a wrapping ring of two ends of the inner cylinder wall; a groove is formed on the wrapping ring; an insulating ring is embedded in the groove; the two ends of the inner cylinder wall are inserted into the insulating ring; and through holes are uniformly distributed on the inner cylinder wall. The sterilization machine can prevent 'point discharge' to ensure that an electrode can stably generate an electric field of a displacement current.

Description

Hydrogen peroxide low temperature plasma sterilizer

Technical field

The present invention relates to a kind of bactericidal unit, specifically, relate to a kind of hydrogen peroxide plasma sterilizer.

Background technology

The domestic and international at present hydrogen peroxide sterilizer of producing, its discharge type adopts the discharge of target ground usually, and promptly cylindrical shell is held with being, and target is an inner tube wall.In inner tube wall, place operating equipment or other object that need sterilize that to sterilize.Inner tube wall is called " glow discharge zone " to the glow discharge of cylindrical shell discharge generation during work.But the two ends of interior electrode (inner tube wall) are easy to generate " point discharge " over the ground, can cause arc discharge when serious, and then influence the activity and the efficient of radio-frequency power supply.

Plasma is a conductor fluid, molecule, atom, free radical, X ray and the vacuum-ultraviolet light isoreactivity particle of the ion that produces at glow discharge zone, electronics, excited state will inevitably be to non-glow discharge zone diffusions, if the interior utmost point produces point discharge inhomogeneous with guiding discharge, with respect to the active particle of the various plasmas that produce at moment density unevenness and influence sterilization effect.

Summary of the invention

The purpose of this invention is to provide and a kind ofly can prevent " point discharge ", have and to make electrode stably produce the hydrogen peroxide plasma sterilizer of the electric field of displacement current.

The technical scheme that realizes above-mentioned purpose is: a kind of hydrogen peroxide low temperature plasma sterilizer, comprise body, cylindrical shell, inner core, vacuum orifice, control system, power supply, the hydrogen peroxide inlet, programmable controller, air inlet and air vent, cylindrical shell is installed on the body, vacuum orifice, air inlet, air vent and hydrogen peroxide inlet all communicate with cylinder lumen by the pipeline that is provided with valve, inner core is installed in the cylindrical shell by rest pad, carriage is installed in the inner core, inner core is made up of the bag circle at inner tube wall and inner tube wall two ends, the bag circle is provided with groove, be embedded with insulated ring in this groove, the two ends of inner tube wall are inserted in this insulated ring, are evenly distributed with through hole on the inner tube wall.

Further, a side of cylindrical shell is provided with cover, and cover and body are hinged, and the contact position of cover and cylindrical shell is provided with sealing ring, and cover is provided with form.

Be installed with the locking knob that can fasten cover on the body.

After adopting technique scheme, inner core is made up of the bag circle at inner tube wall and inner tube wall two ends, the bag circle is provided with groove, be embedded with insulated ring in this groove, the two ends of inner tube wall are inserted in this insulated ring, by insulated ring to inner tube wall promptly in the two ends of electrode shield isolation, the generation of blocking-up point discharge electric field, thereby the uniformity of the plasma active particle of the generation working properly that guaranteed to discharge.

Description of drawings

Fig. 1 is a main TV structure sketch map of the present invention;

Fig. 2 is A-A cross-sectional schematic of Fig. 1;

Fig. 3 is the B portion enlarged diagram of Fig. 2 for Fig. 3;

Fig. 4 is that the C of Fig. 3 is to view;

Fig. 5 is the D portion enlarged diagram of Fig. 3;

Fig. 6 is the perspective view of insulated ring of the present invention;

Fig. 7 is the perspective view of bag circle of the present invention;

Fig. 8 is the front view of carriage of the present invention;

Fig. 9 is the left view of Fig. 8;

Figure 10 is the vertical view of Fig. 8.

Numbering among the figure and name are called: 1, body 1-1, locking knob 2, cylindrical shell 2-1, rest pad 2-2, cover 2-2-1, form 3, inner core 3-1, inner tube wall 3-2, bag circle 3-3, carriage 3-4, insulated ring 3-5, through hole 3-6, tray rack 4, vacuum orifice 5, control system 6, power supply 7, on and off switch 8, variable program controller 9,10, printing outlet 10-1, liquid crystal window 11, air vent 12, sealing ring 13, valve 14, sterilization basket.

The specific embodiment

The present invention is further detailed explanation below in conjunction with drawings and Examples.

Shown in Fig. 1 ~ 10, a kind of hydrogen peroxide low temperature plasma sterilizer, comprise body 1, cylindrical shell 2, inner core 3, vacuum orifice 4, control system 5, power supply 6, hydrogen peroxide inlet 7, programmable controller 8, air inlet 9 and air vent 11, cylindrical shell 2 is installed on the body, vacuum orifice 4, air inlet 9, air vent 11 and hydrogen peroxide inlet 7 all communicate with cylindrical shell 2 inner chambers by the pipeline that is provided with valve 13, inner core 3 is installed in the cylindrical shell 2 by rest pad 2-1, carriage 3-3 is installed in the inner core 3, inner core 3 is made up of the bag circle 3-2 at inner tube wall 3-1 and inner tube wall two ends, bag circle 3-2 is provided with groove 3-2-1, be embedded with insulated ring 3-4 in this groove 3-2-1, the two ends of inner tube wall 3-1 are inserted in this insulated ring 3-4, are evenly distributed with through hole 3-5 on the inner tube wall 3-1.

As shown in Figure 4, be fixed with tray rack 3-6 on the inwall of inner tube wall 3-1, the carriage 3-3 in the inner core 3 is supported on this tray rack 3-6.Carriage 3-3 is used for placing sterilization basket 14.

As shown in Figure 1, the front of body also is provided with on and off switch 6-1, prints outlet 10 and liquid crystal window 10-1.Liquid crystal window 10-1 is display operation process and operation indicating in real time.

As shown in Figure 1, 2, a side of cylindrical shell 2 is provided with cover 2-2, and cover 2-2 and body 1 are hinged, and the contact position of cover 2-2 and cylindrical shell 2 is provided with sealing ring 12, and cover 2-2 is provided with form 2-2-1.Be installed with the locking knob 1-1 that can fasten cover 2-2 on the body 1.When making that by locking knob 1-1 and sealing ring 12 are set cover 2-2 shuts, guarantee the sealing between bung 2-2 and the cylindrical shell 2, prevent in the air admission cylindrical shell 2.

Work process of the present invention is as follows:

Sterilization process is two circulation sterilizations, divides four-stage: stage of preparation, and the first sterilization phase, the second sterilization phase, and ventilate the phase at last.

(1) the vacuum phase is that the sterilization process phase I, (1 holder was 1Torr (torr)=lmmHg=1.33322 * lO2Pa), cavity pressure drops to 700 millitorrs through evacuation, enter the plasma stage, at this moment cavity pressure is controlled in 500 millitorrs, short circulation 10 minutes, length circulation 15 minutes, water evaporates is also extracted out outside the chamber by vacuum pump, helps to drive away article surface or inner residue moisture clean.The rear venting valve was opened in 15 minutes, entered cavity through filtered air, and when pressure reached atmospheric pressure, vacuum pump is task again, and cavity pressure is reduced to 0.4 holder.Entering second stage then, also was the first sterilization phase.

(2) first sterilization phases were divided injection stage, diffusion phase, plasma stage.At first injection needle pierces through and contains the capsule that concentration is 59% hydrogen peroxide, because intracavity has been taken out and has been fine vacuum, hydrogen peroxide is vaporization and fully diffusion rapidly, the existing lethal effect to biological tissue of this process hydrogen peroxide.Capsule is arranged in cartridge, and every box contains ten capsules, can finish five sterilization cycles, and the position of cartridge and injection are by software control and monitoring, and injection process continues 6 minutes.Enter intracavity (short circulation 2 minutes, long circulation 10 minutes) through filtered air then, make hydrogen peroxide be diffused into each corner of intracavity and by the surface of sterilized instrument.Vacuum pump drops to 0.5 holder with cavity pressure by 760 holders once more, enter the plasma stage, intracavity is written into and continues two minutes radio frequency, glow discharge takes place, hydrogen peroxide derives plasma, it can intervene the generation with destroy microorganisms, in case radio frequency stops, plasma (orifice) gas just is converted to harmless steam and oxygen.Last vacuum pump is reduced to 0.4 holder with pressure from 0.5 holder once more, enters the phase III, also is second sterilising cycle.

(3) second sterilising cycles and first sterilising cycle are identical, and the plasma stage enters the quadravalence section, ventilating stage after finishing.

(4) at ventilating stage, INO enters intracavity through filtered air, and pressure is got back to atmospheric pressure, and sterilization process finishes.Whole sterilization process continues 55 minutes, long circulation 72 minutes.

Claims

1. hydrogen peroxide low temperature plasma sterilizer, comprise body (1), cylindrical shell (2), inner core (3), vacuum orifice (4), control system (5), power supply (6), hydrogen peroxide inlet (7), programmable controller (8), air inlet (9) and air vent (11), cylindrical shell (2) is installed on the body, vacuum orifice (4), air inlet (9), air vent (11) and hydrogen peroxide inlet (7) all communicate with cylindrical shell (2) inner chamber by the pipeline that is provided with valve (13), inner core (3) is installed in the cylindrical shell (2) by rest pad (2-1), carriage (3-3) is installed in the inner core (3), it is characterized in that: inner core (3) is made up of the bag circle (3-2) at inner tube wall (3-1) and inner tube wall two ends, bag circle (3-2) is provided with groove (3-2-1), be embedded with insulated ring (3-4) in this groove (3-2-1), the two ends of inner tube wall (3-1) are inserted in this insulated ring (3-4), are evenly distributed with through hole (3-5) on the inner tube wall (3-1).

2. hydrogen peroxide low temperature plasma sterilizer according to claim 1, it is characterized in that: a side of cylindrical shell (2) is provided with cover (2-2), cover (2-2) is hinged with body (1), cover (2-2) is provided with sealing ring (12) with the contact position of cylindrical shell (2), and cover (2-2) is provided with form (2-2-1).

3. hydrogen peroxide low temperature plasma sterilizer according to claim 2 is characterized in that: be installed with the locking knob (1-1) that can fasten cover (2-2) on the body (1).