Clean room sterilization system and sterilization method

文档序号：1886577 发布日期：2021-11-26 浏览：4次中文

阅读说明：本技术 一种洁净室灭菌系统及灭菌方法 (Clean room sterilization system and sterilization method ) 是由陈玲周楽叶伟强于 2021-09-01 设计创作，主要内容包括：本发明提出一种洁净室灭菌系统及灭菌方法,包括洁净室、送风系统、输风管路,送风系统将外界的新风通过输风管路输入洁净室,还包括灭菌设备、循环管路,能在洁净室不停产停工的情况下,单独对洁净室、送风系统、输风管路单独进行消毒灭菌操作,从而延长了洁净室的消毒周期。还包括除湿装置和触媒装置,通过先单独对送风系统及管路单独进行消毒灭菌操作,再对洁净室进行消毒灭绝,能够缩短洁净室系统消毒停工的时间,还能控制送风系统及输风管路的湿度和浓度,通过除湿和提升消毒灭菌气体浓度的操作,可以将过氧化氢浓度保持在一定范围内,使得灭菌效果更佳。(The invention provides a clean room sterilization system and a sterilization method, which comprise a clean room, an air supply system and an air transmission pipeline, wherein the air supply system inputs outside fresh air into the clean room through the air transmission pipeline, and also comprise sterilization equipment and a circulation pipeline, so that the clean room, the air supply system and the air transmission pipeline can be independently sterilized and disinfected under the condition of no production stop and no shutdown of the clean room, and the sterilization period of the clean room is prolonged. Still include dehydrating unit and catalyst device, through carrying out the disinfection operation alone earlier to air supply system and pipeline alone, disinfect to the toilet and extinguish again, can shorten the time that the toilet system disinfection shut down, can also control air supply system and defeated air pipeline's humidity and concentration, through the operation of dehumidification and promotion disinfection gas concentration, can keep hydrogen peroxide concentration in certain extent for the sterilization effect is better.)

1. The utility model provides a sterilization system in toilet, includes toilet, air supply system, defeated tuber pipe way, and air supply system passes through defeated tuber pipe way with external new trend and inputs toilet, its characterized in that: the device also comprises a sterilizing device and a circulating pipeline;

the air supply system comprises an air inlet, a shell, a filtering system, a fan, a cold and hot device, an output end and a circulating end, wherein the air inlet is provided with a valve, a valve is arranged between the circulating end and the filtering system, the fan and the cold and hot device are arranged in the shell, and the output end and the circulating end are arranged at two ends of the shell;

when air supply is needed, a valve of the air inlet is opened, a valve between the circulating end and the filtering system is closed, outside air enters the air conveying pipeline after sequentially passing through the air inlet, the filtering system, the fan, the cold and hot device and the output end under the action of the fan, and fresh air is conveyed into the clean room through the air conveying pipeline;

when circulation is needed, a valve of the air inlet is closed, a valve between the circulation end and the filtering system is opened, air in the clean room enters the circulation end through the circulation pipeline under the action of the fan, then enters the air conveying pipeline after sequentially passing through the filtering system, the fan, the cold and hot device and the output end, and circulating fresh air is conveyed into the clean room through the air conveying pipeline;

one end of the air conveying pipeline is connected with the output end of the air supply system, the other end of the air conveying pipeline is connected with the clean room, one end of the circulating pipeline is connected with the clean room, and the other end of the circulating pipeline is connected with the circulating end of the air supply system;

the sterilizing equipment comprises an output end and a circulating input end;

the air supply system is also provided with a first connecting port and a second connecting port; the first connecting port is communicated with the output end, and the second connecting port is communicated with the circulating end;

the output end is connected with the first connecting port through a pipeline, and the circulating input end is connected with the second connecting port through a pipeline;

a valve is arranged between the air conveying pipeline and the air supply system, and a valve is arranged between the air conveying pipeline and the clean room; a valve is arranged between the circulating pipeline and the clean room, and a valve is arranged between the circulating pipeline and the air supply system.

2. The clean room sterilization system of claim 1, wherein: a forward fan and a reverse fan are arranged in the sterilization equipment;

when the fan rotates forwards, the sterilizing gas generated by the sterilizing equipment is input to the output end of the air supply system through the output end and the first connecting port; when the fan rotates reversely, the sterilizing gas generated by the sterilizing equipment is input into the circulating end of the air supply system through the circulating input end and the second connecting port.

3. The clean room sterilization system of claim 1, wherein: the number of the clean rooms is at least 1, the air conveying pipeline is connected into each clean room, and a valve is arranged between the air conveying pipeline and the joint of each clean room; the circulation pipeline is communicated with each clean room, and a valve is arranged at the joint of the circulation pipeline and each clean room.

4. The clean room sterilization system of claim 1, wherein: the tail end of the air conveying pipeline is also connected into the circulating pipeline through a valve.

5. The clean room sterilization system of claim 1, wherein: the dehumidification system is characterized by further comprising a dehumidification device, a dehumidification input pipeline and a dehumidification output pipeline, wherein the dehumidification input pipeline and the dehumidification output pipeline are respectively connected into the circulation pipeline through valves.

6. The clean room sterilization system of claim 1, wherein: the device also comprises a catalyst decomposition device, a catalyst decomposition device input pipeline and a catalyst decomposition device output pipeline, wherein the catalyst decomposition device input pipeline and the catalyst decomposition device output pipeline are respectively connected into the circulating pipeline through valves.

7. A method of sterilizing a clean room, comprising the steps of:

s1, reversely rotating the fan of the sterilization equipment, circulating the air supply system, and increasing the concentration of the sterilization gas for sterilization; closing valves of an air inlet, an output end and a circulating end of the air supply system, starting the sterilization equipment, and putting a fan of the sterilization equipment in a reverse rotation state;

therefore, on one hand, the air supply system is sterilized, and on the other hand, the concentration of the sterilizing gas is continuously improved, so that a better sterilizing effect is achieved for the air supply system;

s2, circulating the air delivery pipeline and the circulating pipeline to increase the concentration of the sterilizing gas for sterilization; closing a valve at an air inlet of the air supply system, closing a valve between the air delivery pipeline and the clean room, closing a valve between the circulating pipeline and the clean room, and opening a valve at an output end and a valve at a circulating end;

starting fans of the sterilization equipment and the air supply system, placing the fans of the sterilization equipment in forward rotation, outputting sterilization gas by the sterilization equipment, inputting the sterilization gas into an output end of the air supply system through a circulation input end and a first connecting port under the action of the forward rotation of the fans of the sterilization equipment, and enabling the sterilization gas to sequentially pass through the tail ends of an air supply pipeline and an air supply pipeline, enter the circulation pipeline, finally enter a circulation end of the air supply system, and then sequentially pass through a filter system, the fans, a cold and hot device and the output end to be circulated again under the action of the fans of the air supply system;

therefore, on one hand, the air supply system, the air delivery pipeline and the circulating pipeline are disinfected and sterilized, and on the other hand, the concentration of the disinfecting and sterilizing gas is continuously improved, so that the air supply system, the air delivery pipeline and the circulating pipeline can be better disinfected and sterilized;

s3, circularly disinfecting and sterilizing the clean room; closing a valve at an air inlet of the air supply system, closing a valve between the tail end of the air conveying pipeline and the circulating pipeline, opening a valve between the air conveying pipeline and the clean room, opening a valve between the circulating pipeline and the clean room, and opening a valve at an output end and a valve at a circulating end;

the method comprises the following steps that fans of a sterilization device and an air supply system are started, the fan of the sterilization device is arranged to rotate in a forward direction, the sterilization device outputs sterilization gas, the sterilization gas is input into an output end of the air supply system through an output end and a first connecting port under the action of the forward rotation of the fan of the sterilization device, the sterilization gas enters a clean room through an air conveying pipeline under the action of the fan of the air supply system, so that the clean room is sterilized, under the action of the fan of the air supply system, air in the clean room enters a circulation pipeline, one part of the air enters the sterilization device through a pipeline and a circulation input end, the other part of the air enters a circulation end of the air supply system, then sequentially passes through a filter system, the fan, a cold and hot device and the output end, enters the air conveying pipeline and the clean room for sterilization, and the air is circulated again;

on the one hand, carry out circulation disinfection and isolation to the toilet, disinfection and isolation is gaseous can disperse to each corner of toilet, and disinfection and isolation is more thorough, and on the other hand constantly improves disinfection and isolation gas concentration to reach better disinfection and isolation effect to air supply system and air delivery pipeline, circulation pipeline, toilet.

8. The method of sterilization of clean rooms according to claim 7, characterized in that: step S3 further includes the following sub-steps:

s31, dehumidifying the air supply system, the air delivery pipeline, the clean room and the circulating pipeline;

closing the sterilizing equipment and closing the valve of the air inlet; opening a valve between the air delivery pipeline and the clean room, opening a valve between the circulating pipeline and the clean room, opening a valve at the output end and a valve at the circulating end, closing a valve of the catalyst device, and closing a valve at the parallel section of the dehumidifying device on the circulating pipeline, so that the circulating pipeline is blocked, and air in the circulating pipeline enters the circulating pipeline after passing through the dehumidifying device;

the fan of the air supply system is opened, under the action of the fan, air in the clean room enters the air supply system through the circulating pipeline and the dehumidifying device and then enters the clean room through the air conveying pipeline, and therefore circulating dehumidification is achieved;

s32, when the humidity in the clean room is reduced to a set value, the sterilization equipment and the air supply system are started, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased;

keeping the valve of the air inlet closed, opening the sterilization equipment and the air supply system, keeping the valve between the air conveying pipeline and the clean room open, keeping the valve between the circulating pipeline and the clean room open, keeping the valve at the output end and the valve at the circulating end open, closing the valve of the catalyst device, closing the valve of the dehumidifying device, and increasing the concentration of hydrogen peroxide in the air conveying pipeline, the clean room and the circulating pipeline;

s33, when the humidity in the clean room is higher than the set value, the air supply system, the air delivery pipeline, the clean room and the circulating pipeline are dehumidified again; closing the sterilization equipment, keeping a valve of the air inlet closed, and keeping an air supply system open; keeping a valve between the air delivery pipeline and the clean room open, keeping a valve between the circulating pipeline and the clean room open, keeping a valve at the output end and a valve at the circulating end open, keeping a valve of the catalyst device closed, and closing a valve at the parallel section of the dehumidifying device on the circulating pipeline, so that the circulating pipeline is blocked, and air in the circulating pipeline enters the circulating pipeline after passing through the dehumidifying device; the fan of the air supply system is opened, under the action of the fan, air in the clean room enters the air supply system through the circulating pipeline and the dehumidifying device and then enters the clean room through the air conveying pipeline, and therefore re-circulating dehumidification is achieved;

s34, when the humidity in the clean room is reduced to a set value, the sterilization equipment is started again, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased; keeping the air inlet valve closed, starting the sterilization equipment and the air supply system, keeping the valve between the air conveying pipeline and the clean room open, keeping the valve between the circulating pipeline and the clean room open, keeping the valve at the output end and the valve at the circulating end open, keeping the valve of the catalyst device closed, keeping the valve of the dehumidifying device closed, and increasing the concentration of the sterilizing gas in the air conveying pipeline, the clean room and the circulating pipeline again;

s35, operating according to the steps S33 and S34 in a circulating mode until the concentration of the disinfection and sterilization gas reaches the designated concentration, closing the sterilization equipment, keeping the air inlet valve closed, starting the air supply system, keeping the valve between the air conveying pipeline and the clean room open, keeping the valve between the circulating pipeline and the clean room open, keeping the valve at the output end and the valve at the circulating end open, keeping the valve of the catalyst device closed, keeping the valve of the dehumidifying device closed, and disinfecting and sterilizing the air conveying pipeline, the clean room and the circulating pipeline.

9. A method of sterilization of a clean room according to claim 8, characterized in that: further comprises a step S6 of degrading the sterilizing gas; and S35, after a period of time, opening a valve of the catalyst device, closing a valve of the parallel section of the dehumidifying device on the circulating pipeline, closing the valve of the dehumidifying device, and degrading the residual sterilizing gas in the air conveying pipeline, the clean room and the circulating pipeline under the action of the air supply system until the sterilizing gas is completely degraded.

10. A method of sterilization of a clean room according to claim 8, characterized in that:

step S32 further includes the step of humidifying: when the humidity in the clean room is reduced to a set value, the sterilization equipment is started again, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased; meanwhile, the humidifying equipment is started to improve the humidity of the clean room;

step S34 further includes the step of humidifying: when the humidity in the clean room is reduced to a set value, the sterilization equipment is started again, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased; meanwhile, the humidifying equipment is started to improve the humidity of the clean room.

Technical Field

The invention relates to the field of air purification, in particular to a sterilization system and a sterilization method for a clean room.

Background

The clean room is a space with better tightness, which can control the parameters of air cleanliness, temperature, humidity, pressure, noise and the like according to the requirements. The development of clean rooms is closely linked with modern industrial, sophisticated technologies. The development of clean room technology has been promoted by the environmental requirements of precision machinery industries, such as gyroscope, micro-bearing, etc., and semiconductor industries, such as large-scale integrated circuit production, etc. Clean rooms are classified into industrial clean rooms and biological clean rooms according to the nature of the controlled particles. The industrial clean room refers to a clean room in which the controlled particles are non-biological particles such as dust. A biological clean room refers to a clean room in which the controlled particles are biological particles. The clean room is communicated with the outside through an air supply system (or an air conditioning system), the air supply system conveys air with high cleanliness to the clean room through an air conveying pipeline, and a high-efficiency or sub-high-efficiency filter is selected as a terminal filter to ensure the cleanliness of the clean room, so that the air entering the clean room is subjected to final-stage filtration.

Both industrial and biological cleanrooms require periodic sterilization of the cleanrooms to achieve cleanliness levels. At present, ultraviolet sterilization, chemical agent fumigation and disinfectant spraying are mainly adopted for sterilizing the clean room. Ultraviolet rays can kill a variety of microorganisms including bacterial propagules, spores, viruses, fungi, mycoplasma, etc., but have the following drawbacks: the intensity of ultraviolet rays emitted by the ultraviolet lamp is weakened along with the increase of time, and the disinfection capability is weakened continuously; the ultraviolet penetration is weak, and the ultraviolet penetration is easily blocked by production equipment, so that dead corners appear and the sterilization effect is influenced; the ultraviolet sterilization is greatly influenced by relative humidity, when the relative humidity of a clean room is more than or equal to 60 percent, the sterilization effect is obviously weakened, and when the relative humidity is more than or equal to 80 percent, the ultraviolet sterilization cannot be used; the ultraviolet radiation energy is low, only microorganisms directly irradiated can be sterilized, and the sterilization part must be exposed to ultraviolet rays; the distance of the ultraviolet irradiation object surface can not exceed 1.50 m. The chemical agent fumigation method and the disinfectant spraying method can kill various microorganisms including bacterial propagules, spores, viruses, fungi, mycoplasma and the like, and have reliable sterilization effect. The common disinfectants used in the chemical reagent fumigation method at present are as follows: formaldehyde, ethylene oxide, peracetic acid, etc., and commonly used disinfectants for disinfectant spraying methods include: formalin, 75% ethanol, potassium permanganate and the like. However, the chemical fumigation method and the disinfectant spraying method have the following defects: the disinfection and sterilization effect is long, the production is influenced, for example, the formaldehyde is fumigated, the disinfection time is 12 hours, the standing is 4 hours, the air exhaust is 8 hours, the minimum time of 24 hours is needed for one disinfection, and the production is stopped for 2 to 5 days for one disinfection. The formaldehyde fumigation agent is easy to generate secondary pollution, such as paraformaldehyde polymer generated by formaldehyde fumigation and attached to the surfaces of maintenance structures and equipment pipelines of a clean room, the number of suspended particles can be increased within a few days after disinfection, and the formaldehyde polymer is gradually depolymerized into formaldehyde, so that the formaldehyde fumigation agent has great harm to production operators.

In addition, no matter the chemical reagent fumigation method and the disinfectant spraying method, the clean room is sterilized, and the sterilization of an air supply system (or an air conditioning system) and an air conveying pipeline of the clean room is omitted, so that the clean room is not sterilized completely, and bacteria in the air supply system (or the air conditioning system) can quickly pollute the clean room when the clean room is put into use again.

Disclosure of Invention

In order to solve the technical problems, the sterilization system is suitable for VHP sterilization, ozone sterilization, chlorine dioxide gas sterilization and other gas sterilization. Furthermore, the sterilization equipment is a VHP generator, an ozone generator or a chlorine dioxide generator.

VHP is Vaporized Hydrogen Peroxide, and the characteristic that Hydrogen Peroxide has better capability of killing bacterial spores at normal temperature in a gas state than in a liquid state is utilized to achieve a technology of complete sterilization.

Ozone is an allotrope of oxygen, and has the chemical formula O₃47.998, has fishy smell, light blue gas, and strong oxidizing and sterilizing properties.

The chlorine dioxide has the characteristics of strong sterilization capability, no harm to human bodies and animals, no secondary pollution to the environment and the like. Chlorine dioxide is not only a broad-spectrum environment-friendly type sterilization disinfectant which does not generate carcinogens, but also has obvious effects on sterilization, food preservation, deodorization and the like.

A sterilization system for a clean room comprises the clean room, an air supply system and an air transmission pipeline, wherein the air supply system inputs an external fresh air copper drum air transmission pipeline into the clean room, and the sterilization system also comprises sterilization equipment and a circulating pipeline;

the air supply system comprises an air inlet, a shell, a filtering system, a fan, a cooling and heating device, an output end and a circulating end, wherein the air inlet is provided with a valve, a valve is arranged between the circulating end and the filtering system, the fan, the cooling and heating device, the output end and the circulating end are arranged in the shell;

the sterilization equipment comprises an output end, a circulating input end, a first connecting port and a second connecting port, wherein the output end is connected to the first connecting port through a pipeline, and the circulating input end is connected to the second connecting port through a pipeline; the first connecting port is communicated with the output end, and the second connecting port is communicated with the circulating end;

Furthermore, the number of the clean rooms is at least 1, the air conveying pipeline is connected into each clean room, and a valve is arranged between the air conveying pipeline and the joint of each clean room; the circulation pipeline is communicated with each clean room, and a valve is arranged at the joint of the circulation pipeline and each clean room.

Furthermore, the tail end of the air conveying pipeline is connected into the circulating pipeline through a valve.

Furthermore, the sterilization system for the clean room further comprises a dehumidifying device, a dehumidifying input pipeline and a dehumidifying output pipeline, wherein the dehumidifying input pipeline and the dehumidifying output pipeline are respectively connected into the circulating pipeline through valves;

furthermore, the sterilization system for the clean room further comprises a decomposition catalyst device, an input pipeline of the decomposition catalyst device and an output pipeline of the decomposition catalyst device, wherein the input pipeline of the decomposition catalyst device and the output pipeline of the decomposition catalyst device are respectively connected into the circulating pipeline through valves.

Furthermore, the invention also provides a method for sterilizing the clean room, which comprises the following steps:

the fan of the air supply system is started, the sterilizing equipment outputs sterilizing gas, under the action of the reverse rotation of the fan of the air supply system and the fan of the sterilizing equipment, the sterilizing gas enters the circulating end of the air supply system through the circulating input end and the second connecting port, then returns to the sterilizing equipment through the filtering system, the fan, the cold and hot device and the output end in sequence, and then circulates again; therefore, on one hand, the air supply system is sterilized, on the other hand, the concentration of the sterilizing gas is continuously improved, and therefore a better sterilizing effect is achieved on the air supply system.

The sterilizing gas is VHP, ozone sterilization, chlorine dioxide, etc.

S2, circulating the air delivery pipeline and the circulating pipeline to increase the concentration of the sterilizing gas for sterilization; closing a valve at an air inlet of the air supply system, closing a valve between the air delivery pipeline and the clean room, closing a valve between the circulating pipeline and the clean room, and opening a valve at an output end and a valve at a circulating end;

S3, circularly disinfecting and sterilizing the clean room; closing a valve at an air inlet of the air supply system, closing a valve between the tail end of the air conveying pipeline and the circulating pipeline, opening a valve between the air conveying pipeline and the clean room, opening a valve between the circulating pipeline and the clean room, and opening a valve at an output end and a valve at a circulating end;

the fan of the sterilization equipment and the air supply system is started, the fan of the sterilization equipment is arranged in the forward direction to rotate, the sterilization equipment outputs sterilization gas, under the action of the forward direction rotation of the fan of the sterilization equipment, the sterilization gas is input into the output end of the air supply system through the output end and the first connecting port, under the action of the fan of the air supply system, the sterilization gas enters the clean room through the air transmission pipeline, so that the clean room is sterilized, under the action of the fan of the air supply system, after the air in the clean room enters the circulating pipeline, one part of the air enters the sterilization equipment through the pipeline and the circulating input end, the other part of the air enters the circulating end of the air supply system, then the air sequentially passes through the filtering system, the fan, the cold and hot device and the output end, enters the air transmission pipeline, the clean room is sterilized, and the air is circulated again. On the one hand, carry out circulation disinfection and isolation to the toilet, disinfection and isolation is gaseous can disperse to each corner of toilet, and disinfection and isolation is more thorough, and on the other hand constantly improves disinfection and isolation gas concentration to reach better disinfection and isolation effect to air supply system and air delivery pipeline, circulation pipeline, toilet.

Further, step S3 further includes the following sub-steps:

s31, dehumidifying the air supply system, the air delivery pipeline, the clean room and the circulating pipeline;

keeping the valve of the air inlet closed, opening the sterilization equipment and the air supply system, keeping the valve between the air conveying pipeline and the clean room open, keeping the valve between the circulating pipeline and the clean room open, keeping the valve at the output end and the valve at the circulating end open, closing the valve of the catalyst device, closing the valve of the dehumidifying device, and increasing the concentration of the sterilizing gas in the air conveying pipeline, the clean room and the circulating pipeline;

further, step S32 includes the step of humidifying: when the humidity in the clean room is reduced to a set value, the sterilization equipment is started again, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased; meanwhile, the humidifying equipment is started to improve the humidity of the clean room.

S33, when the humidity in the clean room is higher than the set value, the air supply system, the air delivery pipeline, the clean room and the circulating pipeline are dehumidified again; closing the sterilization equipment, keeping a valve of the air inlet closed, and keeping an air supply system open; keeping a valve between the air delivery pipeline and the clean room open, keeping a valve between the circulating pipeline and the clean room open, keeping a valve at the output end and a valve at the circulating end open, keeping a valve of the catalyst device closed, and closing a valve at the parallel section of the dehumidifying device on the circulating pipeline, so that the circulating pipeline is blocked, and air in the circulating pipeline enters the circulating pipeline after passing through the dehumidifying device; the fan of the air supply system is opened, under the action of the fan, air in the clean room enters the air supply system through the circulating pipeline and the dehumidifying device and then enters the clean room through the air conveying pipeline, and therefore re-circulating dehumidification is achieved;

further, step S34 includes the step of humidifying: when the humidity in the clean room is reduced to a set value, the sterilization equipment is started again, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased; meanwhile, the humidifying equipment is started to improve the humidity of the clean room.

S35, operating according to the steps S33 and S34 in a circulating mode until the concentration of the disinfection and sterilization gas reaches the designated concentration, closing the sterilization equipment, keeping the air inlet valve closed, starting the air supply system, keeping the valve between the air conveying pipeline and the clean room open, keeping the valve between the circulating pipeline and the clean room open, keeping the valve at the output end and the valve at the circulating end open, keeping the valve of the catalyst device closed, keeping the valve of the dehumidifying device closed, and disinfecting and sterilizing the air conveying pipeline, the clean room and the circulating pipeline.

Further, the method also comprises a step S6 of degrading the sterilizing gas; and S35, after a period of time, opening a valve of the catalyst device, closing a valve of the parallel section of the dehumidifying device on the circulating pipeline, closing the valve of the dehumidifying device, and degrading the residual sterilizing gas in the air conveying pipeline, the clean room and the circulating pipeline under the action of the air supply system until the sterilizing gas is completely degraded.

Has the advantages that:

the invention has the following beneficial effects:

firstly, the air supply system (or the air conditioning system), the pipeline and the clean room are comprehensively sterilized, the clean room is sterilized more thoroughly, and when the clean room is put into use again after sterilization, the air supply system (or the air conditioning system) and bacteria in the pipeline thereof can be prevented from polluting the clean room;

secondly, under the condition that the clean room does not stop production and stops work, the air supply system (or the air conditioning system) of the clean room or the air supply system and the air conveying pipeline can be independently sterilized, so that the sterilization period of the clean room is prolonged.

Thirdly, when carrying out system disinfection and sterilization to the toilet, can independently carry out the disinfection and sterilization operation to air supply system and defeated tuber pipe way alone through preceding alone, after air supply system and defeated tuber pipe way disinfection and sterilization, disinfect and extinguish to the toilet again, can shorten the time of toilet system disinfection shut-down on the one hand, on the other hand, can control the humidity and the concentration of air supply system and defeated tuber pipe way for air supply system and defeated tuber pipe way disinfection and sterilization effect are better more thorough.

Fourthly, through the operation of dehumidification and promotion disinfection and sterilization gas concentration, can keep disinfection and sterilization gas concentration in certain extent for the sterilization effect is better.

Drawings

FIG. 1 is a schematic view of a sterilization system for a clean room according to embodiment 1;

FIG. 2 is a schematic view of an air supply system;

FIG. 3 is a schematic view of the sterilization system for clean room according to example 2;

fig. 4 is a schematic diagram of a clean room sterilization system with humidification apparatus.

Detailed Description

Example 1: as shown in fig. 1 and 2, a sterilization system for a clean room comprises a clean room 100, an air supply system 200, an air transmission pipeline 300, a sterilization device 400 and a circulation pipeline 500, wherein the air supply system 200 transmits outside fresh air into the clean room through the air transmission pipeline 300;

the air supply system comprises an air inlet 201, a shell 202, a filtering system 203, a fan 204, a cold and hot device 205, an output end 206 and a circulating end 207, the air inlet 201 is provided with a valve F2011, a valve F2071 is arranged between the circulating end 207 and the filtering system 203, the fan 204 and the cold and hot device 205 are arranged in the shell 202, and the output end 206 and the circulating end 207 are arranged at two ends of the shell 202;

one end of the air delivery pipeline 300 is connected with the air supply system through the output end 206, and the other end is connected into the clean room 100; one end of the circulation pipeline 500 is connected with the clean room 100, and the other end is connected to the air supply system through the circulation end 207;

when air supply is needed, a valve F2011 of the air inlet 201 is opened, a valve F2071 between the circulating end 207 and the filtering system 203 is closed, outside air sequentially passes through the air inlet 201, the filtering system 203, the fan 204, the cold and hot device 205 and the output end 206 under the action of the fan 204 and then enters the air conveying pipeline 300, and fresh air is conveyed into the clean room 100 through the air conveying pipeline 300;

when circulation is needed, the valve F2011 of the air inlet 201 is closed, the valve F2071 between the circulation end 207 and the filtering system 203 is opened, air in the clean room 100 enters the circulation end 207 through the circulation pipeline 500 under the action of the fan 204, then enters the air conveying pipeline 300 after sequentially passing through the filtering system 203, the fan 204, the cold and hot device 205 and the output end 206, and circulating fresh air is conveyed into the clean room 100 through the air conveying pipeline 300.

Sterilization apparatus 400 includes an output 401, a cycle input 402;

the air supply system 200 is also provided with a first connecting port 208 and a second connecting port 209; the first connection port 208 is communicated with the output end 206, and the second connection port 209 is communicated with the circulation end 207;

the output end 401 is connected to the first connecting port 208 through a pipeline, and the circulating input end 402 is connected to the second connecting port 209 through a pipeline;

a valve F301 is arranged between the air conveying pipeline 300 and the air supply system 200, and a valve F302 is arranged between the air conveying pipeline 300 and the clean room 100; a valve F501 is provided between the circulation pipeline 500 and the clean room, and a valve F502 is provided between the circulation pipeline 500 and the air supply system 200.

The sterilizing equipment 400 circularly enhances the concentration of the concentration sterilizing gas through the air conveying pipeline 300 and the circulating pipeline 500, so that the sterilizing gas can reach enough concentration, and further the sterilizing effect of the clean room 100 is improved.

Further, a forward and reverse fan is arranged in the sterilization equipment 400; the fan can realize positive and negative rotation.

When the fan rotates forward, the sterilizing gas generated by the sterilizing equipment 400 is input into the output end 200 of the air supply system through the output end 401 and the first connecting port 208; when the fan rotates in the reverse direction, the sterilizing gas generated by the sterilizing equipment 400 is input into the air supply system circulation end 209 through the circulation input end 402 and the second connection port 209.

On the one hand, the air supply system 200 is practical for a long time and is responsible for air purification, so that bacteria and viruses are easily bred, and become a source of infection, thereby increasing pollution to the clean room. On the other hand, the disinfection and sterilization of the clean room 100 requires 24 hours or more, even more than 48 hours of shutdown, which seriously affects the production of enterprises.

The sterilizing equipment 400 of the invention is internally provided with a forward and reverse fan which can realize forward and reverse rotation, and when the fan rotates in the forward direction, the sterilizing gas generated by the sterilizing equipment 400 is input into the output end 200 of the air supply system through the output end 401 and the first connecting port 208.

When the fan of the sterilization equipment rotates reversely, the air supply system 200 is opened, the valve F301 and the valve F501 are closed, and the valve F2011 forms an independent circulating sterilization system by the sterilization equipment and the air supply system, the sterilization gas generated by the sterilization equipment 400 is input into the circulating end 209 of the air supply system through the circulating input end 402 and the second connecting port 209, the sterilization gas generated by the sterilization equipment passes through the pipeline, passes through the filtering system 203, the fan 204 and the cold-hot device 205, and then is input into the sterilization equipment through the output end 200 of the air supply system, the first connecting port 208, the pipeline and the output end 401, and the concentration is circularly increased to sterilize the air supply system 200. Therefore, on one hand, the air supply system 200 is sterilized independently. On the other hand, the period of the sterilization of the clean room is extended by individually sterilizing the air supply system 200.

Further, the number of the clean rooms 100 is at least 1, the air conveying pipeline 300 is connected into each clean room, and a valve is arranged between the air conveying pipeline 300 and the connection position of each clean room; the circulation pipeline 500 is communicated with each clean room, and a valve is arranged at the joint of the circulation pipeline 500 and each clean room.

Further, the end of the air delivery pipeline 300 is connected to the circulation pipeline 500 through a valve F303.

The air conveying pipeline 300 and the circulating pipeline 500 are also easy to breed viruses and bacteria, the valve F302 is closed, the valve F2011 is closed, the sterilizing equipment 200 and the air supply system 400 are started, and the valves F301, F303 and F501 are opened, so that the air supply system 200, the air conveying pipeline 300 and the circulating pipeline 500 can be sterilized in a circulating mode. The period of the sterilization of the clean room is prolonged by performing the circulating sterilization of the air supply system 200, the air delivery pipeline 300 and the circulating pipeline 500.

Further, the device comprises a humidifying device 800 and a pipeline communicated with the air delivery pipeline 300, wherein the humidifying device 800 is communicated with the air delivery pipeline 300 through the pipeline, and the pipeline is provided with a valve F801 and a valve F802.

The sterilization methods of ozone, chlorine dioxide and the like are different from the VHP sterilization method, the VHP can carry water vapor in the vaporization process, humidification is not considered, and dehumidification is only considered. The sterilization method of ozone and chlorine dioxide is not true, and ozone and chlorine dioxide need to keep certain humidity, so that the best sterilization effect can be achieved. The invention can humidify the clean room by opening and closing the humidifying equipment 800 and opening and closing the valve F801 and the valve F802, and when the clean room is sterilized by adopting an ozone and chlorine dioxide sterilization method, the humidity of the clean room reaches a certain value, and the sterilization effect can be improved.

Example 2: as shown in fig. 1, 2 and 3, in this embodiment, in addition to embodiment 1, the present embodiment further includes a dehumidifying apparatus 600, a dehumidifying input pipeline 601 and a dehumidifying output pipeline 602, where the dehumidifying input pipeline 601 and the dehumidifying output pipeline 602 are respectively connected to the circulation pipeline 500 through valves F6011 and F6021.

Further, the system comprises a decomposition catalyst device 700, a decomposition catalyst device input pipeline 701 and a decomposition catalyst device output pipeline 702, wherein the decomposition catalyst device input pipeline 701 and the decomposition catalyst device output pipeline 702 are respectively connected to the circulation pipeline 500 through valves F7011 and F7021.

Example 3: the invention also provides a method for sterilizing the clean room, which comprises the following steps:

s1, rotating the fan of the sterilizing device 400 in the reverse direction, circularly increasing the concentration of the sterilizing gas for sterilizing and disinfecting the air supply system 200; specifically, an air inlet valve F2011 of the air supply system, a valve F301 of the output end and a valve F501 of the circulating end are closed, the sterilization equipment 400 is started, and a fan of the sterilization equipment 400 is placed in a reverse rotation state;

the fan 204 of the air supply system 200 is started, the sterilizing equipment 400 outputs sterilizing gas, under the action of the reverse rotation of the fan 204 of the air supply system and the fan of the sterilizing equipment 400, the sterilizing gas enters the circulating end 207 of the air supply system through the circulating input end 402 and the second connecting port 209, then returns to the sterilizing equipment 400 through the filtering system 203, the fan 204, the cold and hot device 205 and the output end 206 in sequence, and then circulates again; therefore, on one hand, the air supply system 200 is sterilized, on the other hand, the concentration of the sterilizing gas is continuously improved, and therefore a better sterilizing effect is achieved on the air supply system 200.

S2, circularly increasing the concentration of the disinfection and sterilization gas for disinfection and sterilization on the air transmission pipeline 300 and the circulating pipeline 500; specifically, a valve F2011 of an air inlet of the air supply system is closed, a valve F302 between the air conveying pipeline 300 and the clean room 100 is closed, a valve F502 between the circulating pipeline 500 and the clean room 100 is closed, and a valve F301 of an output end and a valve F501 of a circulating end are opened;

starting the fan 204 of the sterilization equipment 400 and the air supply system, placing the fan of the sterilization equipment 400 in forward rotation, outputting sterilization gas by the sterilization equipment 400, inputting the sterilization gas into the output end 206 of the air supply system through the circulation input end 401 and the first connecting port 208 under the action of the forward rotation of the fan of the sterilization equipment 400, and inputting the sterilization gas into the circulation pipeline 500 through the tail ends of the air supply pipeline 300, the valve 303 and the air supply pipeline 300 in sequence under the action of the fan 204 of the air supply system, and finally, entering the circulation end 207 of the air supply system, and then entering the circulation input end 402 for circulation again after sequentially passing through the filter system 203, the fan 204, the cold-hot device 205 and the output end 206; therefore, on one hand, the air supply system 200, the air conveying pipeline 300 and the circulating pipeline 500 are disinfected and sterilized, on the other hand, the concentration of the disinfection and sterilization gas is continuously improved, and therefore a better disinfection and sterilization effect is achieved on the air supply system 200, the air conveying pipeline 300 and the circulating pipeline 500.

S3, circularly sterilizing the clean room 100; closing a valve F2011 of an air inlet of the air supply system, closing a valve F303 between the tail end of the air conveying pipeline 300 and the circulating pipeline 500, opening a valve F302 between the air conveying pipeline 300 and the clean room 100, opening a valve F502 between the circulating pipeline 500 and the clean room 100, opening a valve F301 of the output end 206, and opening a valve F2071 of the circulating end 207;

the fan 204 of the sterilizing equipment 400 and the air supply system is started, the fan of the sterilizing equipment is arranged to rotate in the positive direction, the sterilizing equipment 400 outputs sterilizing gas, under the action of the positive rotation of the fan of the sterilizing equipment 400, the sterilizing gas is input into the output end 206 of the air supply system through the output end 401 and the first connecting port 208, under the action of the fan 204 of the air supply system, the sterilizing gas enters the clean room 100 through the air supply pipeline 300, so that the clean room 100 is sterilized, under the action of the fan 204 of the air supply system, after the air in the clean room 100 enters the circulating pipeline 500, one part of the air enters the sterilizing equipment 400 through the pipeline and the circulating input end 402, the other part of the air enters the circulating end 207 of the air supply system, and then the air enters the air supply pipeline 300 and the clean room 100 through the filtering system 203, the fan 204, the cold and hot device 205 and the output end 206 in sequence for circulating sterilization, the cycle is again performed.

On the one hand, carry out circulation disinfection and isolation to toilet 100, disinfection and isolation is gaseous can disperse to each corner of toilet 100, and disinfection and isolation is more thorough, and on the other hand constantly improves disinfection and isolation gaseous concentration to reach better disinfection and isolation effect to air supply system 200 and defeated air pipeline 300, circulation pipeline 500, clean room 100.

Further, step S3 further includes the following sub-steps:

s31, dehumidifying the air supply system 200, the air delivery pipeline 300, the clean room 100 and the circulation pipeline 500; closing the sterilizing equipment 400 and closing a valve F2011 of an air inlet; opening a valve F301 between the air conveying pipeline 300 and the clean room 100, opening a valve F502 between the circulating pipeline 500 and the clean room 100, opening a valve F301 at the output end, a valve F501 at the circulating end, closing valves F701 and F702 of the catalyst device, and closing a valve F503 at the parallel section of the dehumidifying device 600 on the circulating pipeline 500, so as to block the circulating pipeline 500, so that the air in the circulating pipeline 500 enters the circulating pipeline 500 after passing through the dehumidifying device 600, and then enters the air supply system 200;

the fan 204 of the air supply system is opened, under the action of the fan 204, the air in the clean room 100 enters the air supply system 200 through the circulating pipeline 500 and the dehumidifying device 600, and then enters the clean room 100 through the air conveying pipeline 300, so that the circulating dehumidification is realized;

s32, when the humidity in the clean room 100 is reduced to a set value, the sterilizing equipment 400 and the air supply system 200 are started, and the concentration of the sterilizing gas in the clean room 100 and the circulating pipeline 500 is increased;

further, keeping the air inlet valve F2011 closed, opening the sterilization equipment 400 and the air supply system 200, keeping the valve F302 between the air delivery pipeline 300 and the clean room 100 open, keeping the valve F502 between the circulation pipeline 500 and the clean room 100 open, keeping the valve F301 at the output end and the valve F502 at the circulation end open, closing the valves F701 and F702 of the catalyst device 700, closing the valves F6011 and F6021 of the dehumidification device 600, and increasing the concentration of the sterilization gas in the air delivery pipeline 300, the clean room 100 and the circulation pipeline 500;

further, step S32 includes the step of humidifying:

when the humidity in the clean room is reduced to a set value, the sterilization equipment is started again, and the concentration of the sterilization gas in the clean room and the circulation pipeline is increased; meanwhile, the humidifying equipment is started to improve the humidity of the clean room.

S33, when the humidity in the clean room 100 is higher than the set value, the air supply system 200, the air transmission pipeline 300, the clean room 100 and the circulation pipeline 500 are dehumidified again;

further, the sterilization equipment 400 is closed, the valve F2011 of the air inlet is kept closed, and the air supply system 200 is kept opened; keeping a valve F302 between the air conveying pipeline 300 and the clean room 100 open, keeping a valve F502 between the circulating pipeline 500 and the clean room 100 open, keeping a valve F301 at the output end and a valve F501 at the circulating end open, keeping valves F701 and F702 of the catalyst device 700 closed, and closing a valve F503 at the parallel section of the dehumidifying device 600 on the circulating pipeline, so that the circulating pipeline 500 is blocked, and air in the circulating pipeline 500 enters the circulating pipeline 500 after passing through the dehumidifying device 600 and then enters the air supply system 200; the fan 204 of the air supply system is opened, under the action of the fan 204, the air in the clean room 100 enters the air supply system 200 through the circulating pipeline 500 and the dehumidifying device 600, and then enters the clean room 100 through the air conveying pipeline 300, so that the re-circulating dehumidification is realized;

s34, when the humidity in the clean room 100 is reduced to a set value, the sterilizing equipment 400 is started again, and the concentration of the sterilizing gas in the clean room 100, the air supply pipeline 300 and the circulating pipeline 500 is increased;

further, keeping an air inlet valve F2011 closed, starting the sterilization equipment 400 and the air supply system 200, keeping a valve F302 between the air conveying pipeline 300 and the clean room 100 open, keeping a valve F502 between the circulating pipeline 500 and the clean room 100 open, keeping a valve F301 at an output end and a valve F501 at a circulating end open, keeping valves F701 and F702 of the catalyst device 700 closed, keeping valves F6011 and F6021 of the dehumidification device 600 closed, and raising the concentration of the sterilization gas in the air conveying pipeline 300, the clean room 100 and the circulating pipeline 500 again;

S35, when the concentration of the sterilizing gas reaches a certain value (saturation value), a good sterilizing effect can be realized, and the sterilizing effect can be influenced no matter the concentration is too high or too low. And (4) according to the steps of S33 and S34, the operation is circulated until the concentration of the disinfection and sterilization gas reaches the designated concentration (saturation value), the sterilization equipment 400 is closed, the air inlet valve F2011 is kept closed, the air supply system 200 is started, the valve F302 between the air conveying pipeline 300 and the clean room 100 is kept open, the valve F502 between the circulation pipeline 500 and the clean room 100 is kept open, the valve F301 at the output end and the valve F501 at the circulation end are kept open, the valves F701 and F702 of the catalyst device 700 are kept closed, the valves F6011 and F6021 of the dehumidification device 600 are kept closed, and the high-concentration saturation value disinfection and sterilization gas is performed on the air conveying pipeline 300, the clean room 100 and the circulation pipeline 500.

Through controlling the opening and closing of the valves F6011, F6021 of the dehumidifying device 600, in the stage of raising the concentration of the sterilizing gas, the valves F6011, F6021 of the dehumidifying device 600 are kept closed, the gas in the clean room 100 directly enters the air supply system 200 through the circulating pipeline 500, the adsorption of the dehumidifying agent to the sterilizing gas can be reduced, the concentration of the sterilizing gas can be improved, and the concentration of the sterilizing gas can be kept in a certain range, so that the sterilizing effect is better.

Further, the method also comprises a step S6 of degrading the sterilizing gas;

and S35, after a period of time, opening valves F701 and F702 of the catalytic device 700, closing a valve F503 of the parallel section of the dehumidifying device on the circulating pipeline 500, and closing valves F6011 and F6021 of the dehumidifying device 600, and degrading the sterilizing gas remained in the air conveying pipeline 300, the clean room 100 and the circulating pipeline 500 under the action of the air supply system 200 until the sterilizing gas is completely degraded.

Example 4: in this embodiment, the actual usage scenario of the clean room is taken as an example to describe the whole process in detail.

A sterilization system for a clean room comprises the clean room 100, an air supply system 200, an air transmission pipeline 300, a sterilization device 400 and a circulation pipeline 500, wherein the air supply system 200 inputs outside fresh air into the clean room through the air transmission pipeline 300;

sterilization apparatus 400 includes an output 401, a cycle input 402;

the output end 401 is connected to the first connecting port 208 through a pipeline, and the circulating input end 402 is connected to the second connecting port 209 through a pipeline;

A forward fan and a reverse fan are arranged in the sterilizing equipment 400; the fan can realize positive and negative rotation.

The number of the clean rooms 100 is at least 1, for example, 2, 3, 4 or more than 5, the air conveying pipeline 300 is connected into each clean room, and a valve is arranged between the air conveying pipeline 300 and the connection part of each clean room; the circulation pipeline 500 is communicated with each clean room, and a valve is arranged at the joint of the circulation pipeline 500 and each clean room.

The end of the air supply line 300 is also connected to the circulation line 500 via a valve F303.

When the workshop normally works, the fan 200 is started, the valve F2011 of the air inlet 201 is started, external air enters the air supply system 200 through the air inlet 201, sequentially passes through the filtering system 203, the fan 204, the cold and hot device 205 and the output end 206, enters the air conveying pipeline 300 and then enters the clean room.

Further, the air supply system 200 is further provided with a bacteria detection device or a timing device, when the bacteria detection device detects that the bacteria content reaches a set value or the timing device detects that the preset time is reached, the air supply system 200 starts a sterilization program, step S1 is executed, the fan of the sterilization equipment 400 is rotated reversely, and the air supply system 200 is sterilized by circularly increasing the concentration of the sterilization gas; specifically, an air inlet valve F2011 of the air supply system, a valve F301 of the output end and a valve F501 of the circulating end are closed, the sterilization equipment 400 is started, and a fan of the sterilization equipment 400 is placed in a reverse rotation state;

Further, the air delivery pipeline 300 is further provided with a bacteria detection device or a timing device, when the bacteria detection device detects that the bacteria content reaches a set value or the timing device detects that the preset time is reached, the air supply system 200, the air delivery pipeline 300 and the circulating pipeline 500 are started to perform a sterilization program, and the step S2 is executed to circularly increase the concentration of the sterilization gas for sterilization and disinfection on the air delivery pipeline 300 and the circulating pipeline 500; specifically, a valve F2011 of an air inlet of the air supply system is closed, a valve F302 between the air conveying pipeline 300 and the clean room 100 is closed, a valve F502 between the circulating pipeline 500 and the clean room 100 is closed, and a valve F301 of an output end and a valve F501 of a circulating end are opened;

Further, the method also comprises the step of dehumidifying the air supply system 200, the air delivery pipeline 300 and the circulation pipeline 500.

Dehumidifying the air supply system 200, the air delivery pipeline 300 and the circulation pipeline 500; closing the sterilizing equipment 400 and closing a valve F2011 of an air inlet; closing a valve F301 between the air conveying pipeline 300 and the clean room 100, closing a valve F502 between the circulating pipeline 500 and the clean room 100, opening a valve F301 at the output end, a valve F303 at the tail end of the air conveying pipeline 300 and a valve F501 at the circulating end, closing valves F701 and F702 of catalyst devices, and closing a valve F503 at the parallel section of the dehumidifying device 600 on the circulating pipeline 500, so that the circulating pipeline 500 is blocked, and air in the circulating pipeline 500 passes through the dehumidifying device 600, then enters the circulating pipeline 500 and then enters the air supply system 200;

the fan 204 of the air supply system is opened, under the action of the fan 204, the air in the air transmission pipeline 300 enters the air supply system 200 after passing through the circulating pipeline 500 and the dehumidifying device 600, and then enters the clean room 100 through the air transmission pipeline 300, so that the circulating dehumidification is realized;

when the humidity in the air delivery pipeline 300 and the circulating pipeline 500 is reduced to a set value, the sterilizing equipment 400 and the air supply system 200 are started, and the concentration of the sterilizing gas in the air delivery pipeline 300 and the circulating pipeline 500 is increased, so that sterilization under the saturated concentration of the sterilizing gas is realized.

Further, a bacteria detection device or a timing device is arranged in the clean room, and when the bacteria detection device detects that the bacteria content reaches a set value or the timing device detects that the preset time is reached, the following procedures are started: a method of sterilization of a clean room comprising the steps of:

And S3, starting a clean room disinfection and sterilization program. The clean room is manually closed, so that the clean room is in a state of stopping production and stopping operation to be disinfected and sterilized, and the safety is ensured. Performing cyclic disinfection and sterilization on the clean room 100; closing a valve F2011 of an air inlet of the air supply system, closing a valve F303 between the tail end of the air conveying pipeline 300 and the circulating pipeline 500, opening a valve F302 between the air conveying pipeline 300 and the clean room 100, opening a valve F502 between the circulating pipeline 500 and the clean room 100, opening a valve F301 of the output end 206, and opening a valve F2071 of the circulating end 207;

Further, step S3 further includes the following sub-steps:

s33, when the humidity in the clean room 100 is higher than the set value, the air supply system 200, the air transmission pipeline 300, the clean room 100 and the circulation pipeline 500 are dehumidified again;

s35, when the concentration of the sterilizing gas reaches a certain value (saturation value), a good sterilizing effect can be realized, and the sterilizing effect can be influenced no matter the concentration is too high or too low. And (4) according to the steps of S33 and S34, the operation is circulated until the concentration of the disinfection and sterilization gas reaches the designated concentration (saturation value), the sterilization equipment 400 is closed, the air inlet valve F2011 is kept closed, the air supply system 200 is started, the valve F302 between the air conveying pipeline 300 and the clean room 100 is kept open, the valve F502 between the circulation pipeline 500 and the clean room 100 is kept open, the valve F301 at the output end and the valve F501 at the circulation end are kept open, the valves F701 and F702 of the catalyst device 700 are kept closed, the valves F6011 and F6021 of the dehumidification device 600 are kept closed, and the high-concentration saturation value disinfection and sterilization gas is performed on the air conveying pipeline 300, the clean room 100 and the circulation pipeline 500.

Further, the method also comprises a step S6 of degrading the sterilizing gas;

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