CN87214026U - Automatic controller for oxirane sterilizer - Google Patents

Abstract

The utility model discloses an automatic controller for oxirane sterilizer which is a medical electronic instrument, comprising an automatic controller, a manual controller, an actuating mechanism, a carburetor, a sterilizing pan, etc. The full automation of the oxirane gasification, the vacuum prepumping, the oxirane adding, the humidification, the temperature control, the pressure control, the time control, the inflation, the air exchange, the waste gas treatment, etc. is realized, by using the electronic program control. All the working parameters can freely be selected, and are displayed and indicated by the meter; different forms sound alarms and light alarms are provided for the overpressure, the over temperature, the preparation finishing, the automatic stop, etc., and the measures preventing artificial malfunction are provided. The utility model has the advantages of complete function, simple operation, and good sterilization effect.

Description

Automatic Controller for oxirane sterilizer

This utility model belongs to a kind of medical electronic apparatus.

Utilize that ethylene oxide sterilizing has that temperature is low, humidity is low, penetration power is strong, the sterilization spectrum is wide, to advantages such as article not damageds.It can be widely used in one must guard against heat, avoiding disinfecting of wet article.But utilize the general time of ethylene oxide sterilizing longer, formality is complicated, and the factor that influences sterilization effect is many, and oxirane is poisonous in addition, and is inflammable.Thereby want to obtain good sterilization effect and guarantee safety, then well behaved bactericidal unit must be arranged.Before this utility model is made, existing ethylene oxide sterilizing device comprises that manual, semi-automatic, automaton is relay control both at home and abroad, control mode falls behind, the relay electric contact is contaminated, carbon distribution, burn etc., all can cause control malfunctioning, reliability is relatively poor, and control accuracy is low, optimization of working parameters inconvenience.

In view of the deficiency of above-mentioned prior art, the purpose of this utility model is a kind of employing electronic program control device of design, mainly is to be made of digital integrated electronic circuit and Analogous Integrated Electronic Circuits, makes complicated sterilization process realize full automation.A kind of control accuracy height, stable performance, function is complete, easy to use, cost is low " ethylene oxide sterilizer automaton " are provided.

Fig. 1 is " ethylene oxide sterilizer automaton " circuit block diagram.

Fig. 2 is " ethylene oxide sterilizer automaton " operation principle block diagram.

The utility model " automatic Controller for oxirane sterilizer " is made up of automatic controller 20, personal control 22, executing agency 23, gasifier 29, sterilizing pan 35,36, its operation principle is seen Fig. 1: " automatic controller 20 " is the core of this device, and it can guarantee that equipment moves automatically according to preset program.---sterilization---cleaning---automatic stop that its working procedure is: vacuum. In service can be automatically to vacuum, Pressure, temperature, humidity, time, wash number etc. detect, measure and show, and control. Can freely select whole running parameters, and instrument indication be arranged or show that various duties have the indicator lamp indication, the special states such as, autostop complete to superpressure, overtemperature, work have multi-form sound, light to report to the police. Personal control 22 is auxiliary control device, and it has the functions such as vacuum, sterilization, humidification, intensification, cooling, cleaning. In case of necessity, press corresponding button and just can finish required control action, and the indicator lamp indication is arranged. The utility model can adopt automatically, also can adopt manually, also can be manually, automatic cross-reference, and manual, automatic function can be switched by switching button 23.

In order to increase work efficiency, press the preparation button before the sterilization, gasifier 29, just preheating automatically of sterilizing pan 35,36, preheating finishes has sound and optic signal to inform.

In order to guarantee safety, also be provided with pass 37 monitoring arrangements and an emergent stop botton.

The automatic controller 20 of this utility model " ethylene oxide sterilizer automaton " adopts the electronic program control mode, makes complicated sterilization process realize automatization.It is made up of sterilizing program control circuit, sterilising temp control circuit, gasifier temperature-control circuit, warning circuit and actuator five parts, sees Fig. 2.

The sterilizing program circuit is formed by 1～9, realizes the detection to vacuum, pressure, sterilization time, wash number, and send vacuum, add control instructions such as ring ethoxy alkane, humidification, inflation, vacuum maintenance, zero-pressure maintenance, autostop, and the conversion of carrying out program.

The sterilising temp control circuit is formed by 13～16, realizes the detection to sterilising temp, and sends the control instruction of intensification, cooling.

The gasifier temperature-control circuit is formed by 17～19, sends the control instruction of heating or stopping according to the height of temperature in the gasifier.

Actuator 10 is used for implementing each instruction.

Warning circuit is formed by 11,12, can distinguish among differing cases and send multi-form sound, visual alarm.

Pressure transducer 1: change the pressure signal in the sterilizing pan into the signal of telecommunication.

Amplify 2: the output signal of pick off 1 is amplified to required value, so that tolerance and discriminating.

Differentiate 3: the analogue signal to pressure is differentiated, forms predetermined pressure, and signals such as predetermined vacuum, zero-pressure, superpressure are exported to control logic 6.

Timing 4:, sterilization time is carried out timing or stops according to the command signal of control logic 6.

Counting 5: according to the command signal of logic 6 to the wash number counting or stop.

Control logic 6: to differentiating 3 pressure distinguishing signals, send evacuation after treatment, add control instructions such as ring ethoxy alkane, humidification, timing, counting, inflation, vacuum maintenance, autostop.According to differentiate 3, the signal of timing 4, timing 5 forms the working procedure of " vacuum---sterilization---cleaning---automatic stop ".

Time-delay 7: the humidification command pulse that sends when control logic 6 arrives, and state turnover prolongs and returns automatically after holding a period of time.The length of its time delay is determining to add the length of steam time in sterilizing pan, also just determined the height of humidity.Utilize humidity to select knob to change its time delay, can reach under any temperature, freely select the purpose of humidity.Few with element, effective.

Alarming logic 11: the signal that needs are reported to the police carries out logical judgment, and according to different situations, multi-form alarm signal is sent in instruction warning 12.

Report to the police 12: can send multiple multi-form sound, visual alarm.

Temperature sensor 13: change the temperature signal in the sterilizing pan into the signal of telecommunication.

Amplify 14: the signal of temperature sensor 13 outputs is amplified to required value, so that tolerance and discriminating.

Differentiate 15: the analogue signal to temperature is differentiated, follows the tracks of selective value, and the upper and lower limit (± 10%) of selecting temperature is formed cooling, intensification control signal.

Temperature switch 17: by the height of the temperature in the gasifier, determining closing, opening of it, providing signal for triggering 18.

Trigger 18: by the closing, open of temperature 17, determine its output state, form the command signal that instrument is heated or stopped.

Promote 8,9,16,19: realize the control of light current to forceful electric power.

Actuator 10: be used for implementing evacuation, add control instructions such as ring ethoxy alkane, humidification, sterilizing pan intensification, cooling, gasifier intensification, cooling, inflation, exhaust-gas treatment, autostop.

This utility model main feature:

Adopt the electronic program control system, it mainly is made of digital integrated electronic circuit and Analogous Integrated Electronic Circuits, thereby has dependable performance, and capacity of resisting disturbance is strong, the control accuracy advantages of higher.

This utility model makes sterilization process realize full automation, only need click start button, just can finish whole job contents of sterilization process automatically.When the operation of whole programs finishes, when recovering zero-pressure in the sterilizing pan, can autostop, concurrent sound and optic signal is informed.

This utility model function is complete, has the oxirane gasification, and basic functions such as temperature control, voltage-controlled, wet control, time control, cleaning can satisfy whole specification requirements of ethylene oxide sterilizing.It also has multinomial unique function simultaneously, and Men Wei shuts as sterilizing pan, just equipment can not start; Volitional check is restarted behind the autostop; At any time the shutdown of can meeting an urgent need, the backhaul preface can keep also and can eliminate; Can process oxirane waste gas.

The practicable remote control of this utility model, control station can break away from the sterile chamber and be provided with, and carry out remote control by cable, and in service, operator need not to enter the sterile chamber, just can understand whole running statuses by instrument on the controller panel and indicating device.Press functional keys, just can implement operations necessary, thereby can guarantee operator's health and safety effectively.

Be suitable for through clinical, confirmed the utlity model has the automaticity height, function is complete, use flexibly, adaptability is strong, the metering accurate timing, and control is sensitive, pollute few, easy and simple to handle, safe and reliable sterilization effect is good, and all running parameter can freely select whole duties that advantages such as demonstration or indication are all arranged.

Claims (1)

1, a kind of medical electronic apparatus, automaton especially for ethylene oxide sterilizing, it is made up of automatic controller 20, manual controller 22, actuator 23, gasifier 29,35,36 of sterilizing pans, it is characterized in that automatic controller 20 adopts the electronic program control mode, the full-automation of realization sterilization process, it is made of sterilizing program circuit 1～9, sterilising temp control circuit 13～16, gasifier temperature-control circuit 17～19, warning circuit 11,12.

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