CN207562133U - A kind of Gas sterilizing device - Google Patents

Abstract

The utility model is related to a kind of Gas sterilizing devices, the Gas sterilizing device of the utility model includes gas generator, humidification module, pressure control module, sensor and PLC control modules, the outlet side of the gas generator is connect with the inlet end in airtight sterilizing cabin, the outlet side in airtight sterilizing cabin is connect with the sensor, and the gas generator, airtight sterilizing cabin and sensor form the first circuit；The PLC control modules control the gas generator, humidification module and pressure control module respectively.The Gas sterilizing device of the utility model, available for the sterilizing of airtight sterilizing cabin, disinfection.

Description

A kind of Gas sterilizing device

Technical field

The utility model is related to a kind of Gas sterilizing device more particularly to a kind of nitrogen dioxide gas bactericidal units.

Background technology

The gas that we are commonly used to disinfectant at present mainly has ozone, formaldehyde, hydrogen peroxide steam, ethylene oxide etc..It is smelly Oxygen disinfection is to generate ozone using ozone generator, by pipeline or is directly placed in room, ozone is diffused in entirely In region, the killing to bacterium is reached by the oxidisability of ozone.After disinfection, we are discharged to gas extraction by pipeline It is outdoor.

Formaldehyde disinfection mainly generates formaldehyde gas by heating formalin or paraformaldehyde solution, is drawn by pipeline Enter in room, formaldehyde molecule is extremely easily spread, and with very strong oxidisability, bacterium and gemma can be very good to kill It goes out.After disinfection, gas extraction is discharged to outdoor by we by pipeline.

Hydrogen peroxide steam disinfection method be：We are sucked out excessive concentrations hydrogenperoxide steam generator by peristaltic pump, drop It is added in above a heating dish for having been heated to 140 degree, instant vaporization generates hydrogen peroxide steam, passes through a big work(later The wind turbine of rate blows out hydrogen peroxide steam, spreads out the concentration that is maintained at agreement and after a period of time, hydrogen peroxide Strong oxidizing property can kill bacterium and gemma quickly, kill after completing, a wind turbine is room or confined air built in machine Interior gas is drawn back by a catalyst, and catalyst can be reached by the cycle of several hours in this way with peroxynitrite decomposition hydrogen To removing residual peroxide.

Oxirane disinfection need to reach predetermined concentration including preheating, prewetting, vacuumizing, being passed through gasification ethylene oxide, maintain Sterilization time removes ethylene oxide gas in sterilizing cabinet, parsing to remove the residual of ethylene oxide in sterilizing article.Ethylene oxide As disinfectant, advantage is：L can kill all microorganisms, including bacterial spore.2 sterilizing articles can be wrapped, whole envelope Dress can be kept using preceding in germ-free condition.3 in contrast, and EO does not corrode plastics, metal and rubber, will not become article Xanthochromia is crisp.4 can penetrate form irregular items and sterilize.5 can be used for those that cannot be impregnated with disinfectant, xeothermic, pressure, steam And the sterilizing of the article of other chemical gas sterilizings.The packaging sterilizing of medical instrument is mainly sterilized at present using ethylene oxide.

However, it is also had the following disadvantages using above-mentioned gas disinfection：Ozone is as sterilizing gas, and at low cost and diffusivity is very It is good, but its killing effect is limited, it is impossible to kill gemma.Formaldehyde can kill bacterium and gemma as disinfectant, but formaldehyde The problem of maximum is carcinogenic, thereby increases and it is possible to form paraformaldehyde powder, lead to the residual of paraformaldehyde in the space of sterilizing.Peroxidating Hydrogen steam is an extraordinary sterilizing reagent, can kill bacterium and gemma, and residue is water and oxygen, meets pharmacy rank Requirement, there is problems in that its gas is evaporated at a temperature of 140 DEG C by hydrogenperoxide steam generator and generated, temperature, which declines, to be held It easily causes hydrogen peroxide gas condensation and becomes liquid, therefore the problems such as corrosion to article and big residual.Meanwhile peroxidating hydrogen There are many body intermolecular hydrogen bonding, cause its diffusivity also poor, and the article to bottle or pipeline complexity is difficult to reach killing effect. Ethylene oxide (EO) disinfection maximum the problem of be：The entire sterilization cycle time is longer, the reason is that need long period ventilation with Remove EO residuals；EO gases are toxic, it is necessary to the concentration of EO in room air be controlled to be less than state specified standards；EO gases are inflammable It is explosive, it stores and cannot absolutely be revealed when sterilizing, it is necessary to select safe sterilizer, carry out safety operation and storage.

Utility model content

The purpose of the utility model is to overcome provide a kind of new gaseous sterilization in place of above-mentioned the deficiencies in the prior art Device.

To achieve the above object, the technical solution that the utility model is taken is：A kind of Gas sterilizing device, including gas Generator, humidification module, pressure control module, sensor and PLC control modules, the outlet side of the gas generator with it is airtight The inlet end connection in sterilizing cabin, the outlet side in airtight sterilizing cabin are connect with the sensor, the gas generator, airtight sterilizing Cabin and sensor form the first circuit；The PLC control modules control the gas generator, humidification module and pressure control respectively Molding block.

In the Gas sterilizing device of the utility model, PLC control modules can control gas generator, humidification module, pressure The valvular opening and closing of institute in control module and the device, and can show the detection data of sensor.By being controlled to PLC The man-machine interface input disinfectant solution evaporation rate of module, time, temperature, humidity or pressure can control corresponding module to work. In addition, the sensor of the utility model can detect sterilant gas concentration, also detectable temperature, humidity and pressure；Also, due to There is provided pressure control module, the sterilizing for certain articles, we can be by taking out pulsed vacuum come assist gas molecule Diffusion, for example be tiny long pipeline, the medical product sterilizing of paper or respiratory membrane packaging is breathed, we add again by vacuumizing Enter gas, gas molecule easily enters to sterilize in these pipelines or medical package.We are true by the pumping of pulsed Sky may further ensure that sterilization effect.

The Gas sterilizing device of the utility model, available for the sterilizing of airtight sterilizing cabin, disinfection.

Further, the gas generator is nitrogen dioxide gas generator.It in this way can be molten by evaporating nitrogen dioxide Liquid generates nitrogen dioxide gas, and bacterium is killed using the strong oxidizing property of nitrogen dioxide gas.Nitrogen dioxide property is relatively stablized, and Its evaporating temperature is very low, is pungent gas for rufous at 21.1 DEG C, using nitrogen dioxide gas generator, can utilize dioxy The special properties for changing nitrogen sterilize for the article of temperature sensitivity.

Further, the gas generator includes gasifying disk, the peristaltic pump for disinfectant liquid to be added dropwise to gasifying disk With for heating the heating unit of gasifying disk, the heating unit and the gasifying disk are set on first circuit, described The outlet side of gasifying disk is connect with the inlet end in airtight sterilizing cabin, and the heating unit is set on the sensor and the gasifying disk Between.

Further, it is additionally provided with the first valve, the second valve, third valve and wind turbine on first circuit, described Three valves be set on the gasifying disk and it is airtight sterilizing cabin between, it is described it is airtight sterilizing cabin outlet side successively with first valve Door, wind turbine connection, second valve are set between the heating unit and the sensor.

Further, the humidification module is set between the sensor and the third valve, and the humidification module It is in parallel with the gasifying disk；The 4th valve, the humidification module, third are additionally provided between the humidification module and the sensor Valve, airtight sterilizing cabin, the first valve, wind turbine, sensor, the 4th valve form second servo loop.

Further, the humidification module includes solution bottle, and further include makes it generate vapor for heated solution bottle Heating unit makes it generate the ultrasound unit of vapor for ultrasonic solution bottle.

Further, the Gas sterilizing device further includes sequentially connected 5th valve, condenser and gas clean-up list Member, the other end of the 5th valve are connect with the outlet side of the sensor, the other end of the gas cleanup unit and institute State the outlet side connection of third valve, the condenser, gas cleanup unit, airtight sterilizing cabin, the first valve, wind turbine, sensing Device and the 5th valve form tertiary circuit.

Due to being provided with condenser and gas cleanup unit, after the completion of subject to sterilization, condenser is started to work, at this time whole gas Stream can pass through condenser and gas cleanup unit, and residual gas is condensed first becomes liquid, and liquid flows into gas clean-up list Member, while the gas in pipeline will also pass through gas cleanup unit, carry out dual removing gas.It can be placed in gas cleanup unit Catalyst-sorbent removes gas by the way of catalytic adsorption.Setting gas cleanup unit can more rapidly remove residual gas, Shorten run time.In addition, by setting three circuits, gas is generated, three humid control, gas clean-up main functions Three circuits are separated into, can control and operate respectively.

Further, the Gas sterilizing device further includes waste collection bottle, and the waste collection bottle and the gas are clear Except unit connects.Equipped with waste collection bottle, the liquid of gas recovery condensation gained can be facilitated.

Further, the 6th valve is additionally provided between the sensor and the third valve, the 6th valve is with dividing Not described gasifying disk and the humidification module are in parallel.By third valve and the 6th valve, we are provided with a double branch system System, in the stage before gas is removed, we open third valve, close the 6th valve, gas can be allowed to be directly entered in this way Airtight sterilizing cabin, quickly carry out disinfection sterilizing, while gas is avoided to enter gas cleanup unit, and gas is prevented to be eliminated；Into During row gas clean-up, third valve is closed, opens the 6th valve, all gas passes through condenser and gas clean-up list at this time Member, realization can quickly remove gas, while possible remaining gas can be also disposed of in the first circuit and second servo loop, into One step ensures safety.

Further, the Gas sterilizing device further includes leak detection unit, and the leak detection unit is set on described Between the outlet side of first valve and the pressure control module.The utility model gas can be detected by leak detection unit The decline of pressure situation of pipe-line system in bactericidal unit, to judge the sealing situation of whole system, detects the presence of leakage.

In addition, the utility model additionally provides a kind of gaseous sterilization process, in order to achieve this, what the utility model was taken Technical solution is：A kind of gaseous sterilization process, includes the following steps：

(1) air-tightness of whole link circuits in Gas sterilizing device and the device is checked；

(2) to the parameter needed for the input of the man-machine interface of PLC control modules：Disinfectant liquid evaporation rate (i.e. peristaltic pump Rotating speed) and evaporation time, sterilizing retention time, continue in the sterilizing retention time to evaporate the amount of disinfectant liquid, temperature, humidity and Pressure, under the control of PLC control modules, the heating unit of humidification module, pressure control module and gas generator starts work Make；

(3) after (gasifying disk) temperature, (airtight sterilizing cabin) humidity, pressure reach setting value, by peristaltic pump to vapour Change disk and disinfectant liquid is added dropwise, the disinfectant liquid of dropwise addition is vaporizated into gas, after gas reaches the usage amount of setting, goes out Bacterium；

(4) after sterilizing, stopping peristaltic pump, gas cleanup unit is started to work, and the gas of sterilizing is passed sequentially through condenser, Again by gas absorption clearing cell, it is purged residual.

Above-mentioned steps (2) are the preparation stage to sterilize；(gasifying disk) temperature, (airtight sterilizing cabin) humidity, pressure After reaching setting value, into evaporation stage；Gas enters the holding stage after reaching the usage amount of setting；Step (4) is to remove Stage.In the preparation stage, adjustment space humidity, heating dish preheating, space pressure adjustment (pressurize or vacuumize), these can To control and set by PLC；Evaporation stage, disinfectant rapid evaporation are added in cabin, at this time disinfectant usage amount=disappear Toxic agent evaporation rate (i.e. the speed of peristaltic pump) * evaporation times, sometimes can carry out pulsed by pressure control unit It vacuumizes that sterilant gas is assisted to spread and permeate, these can be controlled and be set by PLC；In the holding stage, disappear at this time Toxic agent concentration reaches required working concentration, and sterilizing speed improves, and needs that a period of time is maintained to reach whole sterilization effect, Holding stage peristaltic pump continues that disinfectant liquid is added dropwise to gasifying disk, to supplement in sterilant gas to airtight sterilizing cabin, maintains The concentration of disinfectant allows sterilant gas to maintain under the required concentration of sterilizing, and quick sterilization ensures whole simultaneously Sterilization effect is consistent.At this time to supplement some disinfectants, evaporation element can continue work, can set different disinfections Agent evaporation rate and evaporation time, these can be controlled and be set by PLC；Removing stage is to maintain after stage completion； Into sterilant gas removing stage, until sterilant gas residual is scavenged into the safe concentration of requirement, i.e. sterilizing is completed.

As the preferred embodiment of gaseous sterilization process described in the utility model, the gas that the method uses is dioxy Change nitrogen.Nitrogen dioxide gas has strong oxidizing property, can kill bacterium and gemma, we can use nitrogen dioxide as sterilizing Gas sterilizes to small-sized enclosure space.It can not only reach same bacterium and the gemma killed using nitrogen dioxide sterilizing Effect, leading to the problem of when can also evade formaldehyde, ethylene oxide, hydrogen peroxide vapor sterilization.Also, NO₂At 21.2 DEG C just It can vaporize, gas temperature is not high, is very suitable for the article of temperature sensitivity, the reagent of the drug equipped with temperature sensitivity Bottle, syringe etc. sterilize.NO₂Gas can also pass in and out air-permeable paper, spy defend it is strong wait medical packaging materials, concentration is low during sterilizing And woth no need to high pressure-temperature etc., future can replace ethylene oxide sterilizing.

Compared with prior art, the beneficial effects of the utility model are：

(1) Gas sterilizing device of the utility model includes gas generator, humidification module, pressure control module, sensing Device and PLC control modules control the gas generator, humidification module and pressure control module respectively by PLC control modules, It realizes and is sterilized, sterilized using gas；

(2) using nitrogen dioxide gas generator, (generator passes through heating two to the Gas sterilizing device of the utility model Aoxidize nitrogen solution and generate nitrogen dioxide gas), it can be carried out using the special properties of nitrogen dioxide to the article of temperature sensitivity Sterilizing；

(3) residual gas condensation is become liquid by the utility model first by setting condenser and gas cleanup unit, Current-carrying enters gas cleanup unit, while the gas in pipeline will also pass through gas cleanup unit, carries out dual removing gas, in this way NO2 can be more rapidly removed, shortens run time；

(4) Gas sterilizing device of the utility model generates gas, humid control, gas by setting three circuits It removes three main functions and is separated into three circuits, can control and operate respectively；

(5) Gas sterilizing device of the utility model is provided with a double branch system by third valve and the 6th valve System, the in this way stage before gas is removed can avoid gas from entering gas cleanup unit, gas prevented to be decomposed；Into promoting the circulation of qi Body can quickly remove gas when removing；

(6) it using the Gas sterilizing device of the utility model, can not only sterilize, it can also part removing heat source；Also, Sterilization time is short, and checkout time is fast, can meet the demands such as fast pipeline；The residual of sterilizing is nitrate ion, and residual is dense It spends extremely low and can be monitored.

Description of the drawings

Fig. 1 is the structure diagram of the utility model Gas sterilizing device.

Wherein, 1 is heating unit, and 2 be peristaltic pump, and 3 be gasifying disk, and 4 be third valve, and 5 be the first valve, and 6 be pressure Control module, 7 be leak detection unit, and 8 be wind turbine, and 9 be sensor, and 10 be the second valve, and 11 be the 4th valve, and 12 be humidification Module, 13 be the 5th valve, and 14 be condenser, and 15 be waste collection bottle, and 16 be gas cleanup unit, and 17 be the 6th valve.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is better described, below in conjunction with attached drawing and specific implementation The utility model is described in further detail for example.

Embodiment 1

As shown in Figure 1, a kind of Gas sterilizing device of the utility model embodiment, including gas generator, humidification mould Block 12, pressure control module 6, sensor 9 and PLC control modules, the air inlet of the outlet side of gas generator and airtight sterilizing cabin End connection, the outlet side in airtight sterilizing cabin are connect with sensor 9, and the gas generator, airtight sterilizing cabin and sensor 9 are formed First circuit；The PLC control modules control the gas generator, humidification module 12 and pressure control module 6 respectively.

In above-mentioned gas bactericidal unit, gas generator generate gas through pipeline to it is airtight sterilizing cabin in, to gas Close sterilizing cabin is sterilized, is sterilized.Wherein, PLC control modules can control gas generator, humidification module 12 and pressure control mould Block 6, and can show the detection data of sensor 9.By inputting disinfectant solution evaporation speed to the man-machine interface of PLC control modules Degree, time, temperature, humidity or pressure can control corresponding module to work.

Preferably, the gas generator is nitrogen dioxide gas generator.It in this way can be by evaporating nitrogen dioxide solution Nitrogen dioxide gas is generated, bacterium is killed using the strong oxidizing property of nitrogen dioxide gas.Using gas carry out disinfection sterilizing when, There are many alternative gases, such as formaldehyde, ethylene oxide, hydrogen peroxide steam etc., and nitrogen dioxide gas has strong oxygen The property changed can not only achieve the effect that the same killing bacterium and gemma, due also to its evaporating temperature is very low, can evade Leading to the problem of when formaldehyde, ethylene oxide, hydrogen peroxide vapor sterilization is that the article of temperature sensitivity sterilizes.

Preferably, the gas generator includes gasifying disk 3, the peristaltic pump 2 for disinfectant liquid to be added dropwise to gasifying disk 3 With for heating the heating unit 1 of gasifying disk, heating unit 1 and gasifying disk 3 are set on first circuit, gasifying disk 3 Outlet side is connect with the inlet end in airtight sterilizing cabin, and heating unit 1 is set between sensor 9 and gasifying disk 3.

Preferably, the first valve 5, the second valve 10, third valve 4 and wind turbine, third are additionally provided on first circuit Valve 4 be set on gasifying disk 3 and it is airtight sterilizing cabin between, it is described it is airtight sterilizing cabin outlet side successively with the first valve 5, wind turbine 8 Connection, the second valve 10 are set between heating unit 1 and sensor 9.

Preferably, humidification module 12 is set between sensor 9 and third valve 4, and humidification module 12 and gasifying disk 3 are simultaneously Connection；It is additionally provided with the 4th valve 11 between humidification module 12 and sensor 9, humidification module 12, third valve 4, airtight sterilizing cabin, the One valve 5, wind turbine 8, sensor 9, the 4th valve 11 form second servo loop.

In order to more rapidly remove residual gas, shorten run time, the Gas sterilizing device of the utility model further include according to The 5th valve 13, condenser 14 and the gas cleanup unit 16 of secondary connection, the other end of the 5th valve 13 and the outlet of sensor 9 End connection, the other end of gas cleanup unit 16 are connect with the outlet side of third valve 4, condenser 14 and gas cleanup unit 16th, airtight sterilizing cabin, the first valve 5, wind turbine 8,9 and the 5th valve 13 of sensor form tertiary circuit.

After the completion of subject to sterilization, condenser 14 is started to work, and whole air-flows can pass through condenser 14 and gas clean-up at this time Unit 16, residual gas is condensed first becomes liquid, and current-carrying enters gas cleanup unit, while the gas in pipeline will also pass through Gas cleanup unit 16 carries out dual removing gas, more rapidly to remove residual gas, shortens run time.In addition, by setting Three circuits are put, gas are generated, three humid control, gas clean-up main functions are separated into three circuits, can be distinguished Control and operation.

For convenience of the liquid of gas recovery condensation gained, the Gas sterilizing device of the utility model further includes waste collection bottle 15, waste collection bottle 15 is connect with gas cleanup unit 16.

Preferably, be additionally provided with the 6th valve 17 between sensor 9 and third valve 4, the 6th valve 17 respectively with gasifying disk 3 It is in parallel with humidification module 12.By 4 and the 6th valve 17 of third valve, we are provided with a double branch roads system, are removing gas In stage before body, we open third valve 4, close the 6th valve 17, gas can be allowed to be directly entered airtight sterilizing in this way Cabin, quickly carry out disinfection sterilizing, while gas is avoided to enter gas cleanup unit, and gas is prevented to be eliminated；Carrying out, gas is clear Except when, close third valve 4, open the 6th valve 17, all gas is realized by condenser and gas cleanup unit at this time Gas can be quickly removed, while possible remaining gas can be also disposed of in the first circuit and second servo loop, further really It ensures safety.

For ease of judging the sealing situation of whole system, leakage is detected the presence of, the Gas sterilizing device of the utility model is also Including leak detection unit 7, leak detection unit 7 is set between the outlet side of the first valve 5 and pressure control module 6.

Use the method that the Gas sterilizing device of the utility model sterilizes for：

(1) air-tightness of whole link circuits in Gas sterilizing device and the device is checked；

(2) to the parameter needed for the input of the man-machine interface of PLC control modules：When disinfectant liquid evaporation rate and evaporation Between, sterilizing the retention time, sterilizing the retention time in continue evaporate disinfectant liquid amount, temperature, humidity and pressure, PLC control Under the control of molding block, the heating unit of humidification module, pressure control module and gas generator is started to work；

(3) after temperature, humidity, pressure reach setting value, disinfectant liquid is added dropwise to gasifying disk by peristaltic pump, dropwise addition Disinfectant liquid is vaporizated into gas, after gas reaches the usage amount of setting, sterilizes；

(4) after sterilizing, stopping peristaltic pump, gas cleanup unit is started to work, and the gas of sterilizing is passed sequentially through condenser, Again by gas absorption clearing cell, it is purged residual；

Wherein, the gas used is sterilized as nitrogen dioxide.

The specifically used method of the utility model above-mentioned gas bactericidal unit is：

1st, the first valve 5,4 and the 4th valve 11 of third valve are opened in PLC control modules control first, at this time second servo loop It is unobstructed；Wind turbine 8 is opened, the space to sterilize and second servo loop is needed to form a unicom system；Starting pressure control mould It after block 6, pressurizes in this unicom system, leak detection unit 7 detects the decline of pressure situation of this pipe-line system, with judgement The sealing situation of whole system, detects the presence of leakage；

2nd, after pressure detecting is completed, pressure control module 6 adjusts pressure to normal-pressure situations.To PLC control modules The confined space that sterilizes of man-machine interface needs in the data such as temperature, humidity, gas concentration, pressure, if the data are in machine Within the value range that device is allowed, begin through PLC control modules setting operation program or transfer control module is stored Program；

3rd, humidification module 12 works first, and the humidity of this internal system is gradually added to more than 80% humidity； If humidity has met the requirements in space, it is directly entered the 5th step；

4th, the heating unit 1 in humidification in the first circuit starts to preheat, and reaches the temperature of setting；

5th, humidification is completed and then opens the second valve 10, and heating unit 1 has reached preset temperature, peristaltic pump 2 at this time Start to work, toward gasifying disk 3 on disinfectant liquid is added dropwise, since heating unit 1 has reached predetermined temperature, gasifying disk 3 will The solution boils of dropwise addition are become gas rapidly, the gas of generation is taken to rapidly by air-flow in airtight sterilizing cabin, therewith entire Circulation in pipeline；Meanwhile sensor 9 starts to detect the concentration of gas；

6th, with the operation of peristaltic pump 2, more gases are generated, progressively reach the gas concentration of scheduled needs, once it reaches To the gas concentration of needs, peristaltic pump 2 reduces speed now, slowly a small amount of to generate gas, to ensure gas concentration stabilization at one In concentration；Meanwhile according to the humidity data of sensor 9, humidifier can be with intermittent work, and humidity is maintained in guarantee system 65% or more stable value；

7th, the concentration of gas and moisture stable initially enter retention period more than scheduled value, this stage is the sterilizing phase, I Ensure to reach killing effect by being kept for the regular hour.

8th, after retention period terminates, stopping peristaltic pump 2, (peristaltic pump 2 sets the reversion of a short time before being stopped Operation, is all pumped back to the solution in the pipeline of peristaltic pump 2 in reagent bottle, to ensure safety), heating unit, humidifier stop It only works, closes third valve 4, open the 5th valve 13 and the 6th valve 17, condenser 14 are started to work, at this time whole air-flows Condenser 14 and gas cleanup unit 16 can be passed through, gas is condensed first becomes liquid, inflow gas clearing cell 16, together Gas in Shi Guandao will also pass through gas cleanup unit 16, carry out dual removing NO2 gases；

We obtain the online real-time concentration of gas, until NO2 reaches safe concentration, sterilizing by sensor Finish；

9th, the unit in operation such as wind turbine 8, condenser 14 is progressively closed off, the valve of all openings is closed, has finally shut down Into operation.

It is noted that for certain sterilizings, we can be vacuumized to assist gas by pressure pressure control module The diffusion of body molecule, can sterilize those pipelines or medical inner packing in this way.

Finally, it should be noted that above example is only to illustrate the technical solution of the utility model rather than to this reality With the limitation of novel protected range, although being explained in detail with reference to preferred embodiment to the utility model, this field it is common It will be appreciated by the skilled person that the technical solution of the utility model can be modified or replaced equivalently, without departing from this reality With the spirit and scope of new technique scheme.

Claims (9)

1. a kind of Gas sterilizing device, it is characterised in that：Including gas generator, humidification module, pressure control module, sensor With PLC control modules, the outlet side of the gas generator is connect with the inlet end in airtight sterilizing cabin, the outlet in airtight sterilizing cabin End is connect with the sensor, and the gas generator, airtight sterilizing cabin and sensor form the first circuit；The PLC controls Module controls the gas generator, humidification module and pressure control module respectively.

2. Gas sterilizing device as described in claim 1, it is characterised in that：The gas generator is sent out for nitrogen dioxide gas Raw device.

3. Gas sterilizing device as claimed in claim 1 or 2, it is characterised in that：The gas generator includes gasifying disk, uses In disinfectant liquid is added dropwise to gasifying disk peristaltic pump and heating unit for heating gasifying disk, the heating unit and described Gasifying disk is set on first circuit, and the outlet side of the gasifying disk is connect with the inlet end in airtight sterilizing cabin, described to add Hot cell is set between the sensor and the gasifying disk.

4. Gas sterilizing device as claimed in claim 3, it is characterised in that：Be additionally provided on first circuit the first valve, Second valve, third valve and wind turbine, the third valve is set between the gasifying disk and airtight sterilizing cabin, described airtight to go out The outlet side in bacterium cabin is connect successively with first valve, wind turbine, and second valve is set on the heating unit and the biography Between sensor.

5. Gas sterilizing device as claimed in claim 4, it is characterised in that：The humidification module is set on the sensor and institute Between stating third valve, and the humidification module is in parallel with the gasifying disk；Between the humidification module and the sensor also Equipped with the 4th valve, the humidification module, third valve, airtight sterilizing cabin, the first valve, wind turbine, sensor, the 4th valve shape Into second servo loop.

6. Gas sterilizing device as claimed in claim 4, it is characterised in that：The Gas sterilizing device, which further includes, to be sequentially connected The 5th valve, condenser and gas cleanup unit, the other end of the 5th valve connect with the outlet side of the sensor, The other end of the gas cleanup unit is connect with the outlet side of the third valve, the condenser, gas cleanup unit, gas Close sterilizing cabin, the first valve, wind turbine, sensor and the 5th valve form tertiary circuit.

7. Gas sterilizing device as claimed in claim 6, it is characterised in that：The Gas sterilizing device further includes waste collection Bottle, the waste collection bottle are connect with the gas cleanup unit.

8. Gas sterilizing device as claimed in claims 6 or 7, it is characterised in that：The sensor and the third valve it Between be additionally provided with the 6th valve, the 6th valve is in parallel with the gasifying disk and the humidification module respectively.

9. Gas sterilizing device as claimed in claim 4, it is characterised in that：The Gas sterilizing device further includes leak detection Unit, the leak detection unit are set between outlet side and the pressure control module of first valve.