CN111701067A

CN111701067A - Air sterilizer

Info

Publication number: CN111701067A
Application number: CN202010485110.7A
Authority: CN
Inventors: 郑亚雄; 肖慎翀; 郭健; 梁双令; 齐江辉; 章红雨
Original assignee: Wuhan No 2 Ship Design Institute No 719 Research Institute of China Shipbuilding Industry Corp
Current assignee: Wuhan No 2 Ship Design Institute No 719 Research Institute of China Shipbuilding Industry Corp
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-09-25
Anticipated expiration: 2040-06-01
Also published as: CN111701067B

Abstract

The present invention relates to an air sterilizer comprising: the fan is used for connecting a ventilation system of a hospital; the sterilizing tank is used for sterilizing air entering the fan, and an ultraviolet sterilizing lamp, a plasma sterilizer and a smoke spraying sterilizer are arranged in the sterilizing tank and are used for sterilizing the air; one end of the connecting air pipe is connected with the fan, the other end of the connecting air pipe is connected with the sterilizing tank, and the connecting air pipe is used for conveying the air entering the fan to the sterilizing tank; the pressure relief air bag is arranged between the fan and the disinfection tank, communicated with the connecting air pipe and used for temporarily storing air entering the fan when the disinfection tank is used for disinfecting the air. The air sterilizer can thoroughly sterilize the air in the hospital in real time and improve the sterilization efficiency.

Description

Air sterilizer

Technical Field

The invention relates to the field of air disinfection in hospitals, in particular to an air disinfector.

Background

Along with the continuous improvement of the medical health level, hospitals pay more and more attention to the problem of air disinfection and purification to prevent airborne virus, and because disease people are gathered in the hospitals, are full of various pathogenic bacteria and other bacteria, and a plurality of susceptible people exist in the hospitals, the hospitals must take sterilization and disinfection measures. Especially, the ventilation requirement of a shelter hospital is large, and the requirements on air sterilization efficiency and quality are high, so that the air flow is ensured and the sterilization is thorough when the air sterilizer is designed.

In the related art, the current common air sterilization method for hospitals comprises the following steps: a plasma purification device is arranged in an air outlet pipeline of a central air conditioner in a ward, and the air blowing and supplying of the central air conditioner is disinfected by a plasma technology, so that the purposes of disinfection, sterilization and organic pollutant removal are achieved, and cross infection is avoided; and when the ward is emptied, the ward is thoroughly killed by means of manual spraying and the like periodically.

However, when a patient exists in a ward, the disinfection method can only be used for disinfecting through the plasma purification device in the central air conditioner, when the number of the patients is large, indoor viruses are more miscellaneous, the disinfection is not thorough easily, the patients can only be disinfected thoroughly when the patients are emptied, the air in the ward cannot be thoroughly disinfected in real time, the quality of the air in the hospital is influenced, and the later-stage efficiency is low through a manual spraying mode.

Therefore, there is a need for a new air sterilizer to ensure the quality of air in hospitals.

Disclosure of Invention

The embodiment of the invention aims to provide an air sterilizer, which aims to solve the problems that the air in a ward cannot be thoroughly sterilized in real time and the efficiency is low by a manual spraying mode in the related technology.

To achieve the above object, an embodiment of the present invention provides an air sterilizer, including: the fan is used for connecting a ventilation system of a hospital; the sterilizing tank is used for sterilizing air entering the fan, and an ultraviolet sterilizing lamp, a plasma sterilizer and a smoke spraying sterilizer are arranged in the sterilizing tank and are used for sterilizing the air; one end of the connecting air pipe is connected with the fan, the other end of the connecting air pipe is connected with the sterilizing tank, and the connecting air pipe is used for conveying the air entering the fan to the sterilizing tank; the pressure relief air bag is arranged between the fan and the disinfection tank, communicated with the connecting air pipe and used for temporarily storing air entering the fan when the disinfection tank is used for disinfecting the air.

In some embodiments, the sterilization tank comprises a tank body, the ultraviolet sterilization lamps are arranged at the bottom of the tank body and distributed in an annular shape, and the plasma sterilizer is arranged in the annular shape formed by the ultraviolet sterilization lamps.

In some embodiments, the sterilization tank comprises a tank body, and the aerosol spray sterilizer comprises a smoke inlet arranged at the outer top of the tank body and a spray pipe connected with the smoke inlet, and the spray pipe is arranged at the inner top of the tank body.

In some embodiments, the connecting air pipe is provided with a first electromagnetic valve located between the sterilization tank and the pressure relief air bag, a second electromagnetic valve is arranged at a joint of the pressure relief air bag and the connecting air pipe, when the pressure in the sterilization tank reaches a set value, the first electromagnetic valve is controlled to be closed, the second electromagnetic valve is controlled to be opened, and the air enters the pressure relief air bag.

In some embodiments, the air sterilizer further comprises an air outlet pipe connected to the sterilizing tank, the air outlet pipe comprising: the pipe wall is communicated with the disinfection tank; the air outlet is communicated with the pipe wall, is positioned on one side of the pipe wall and is used for discharging the sterilized air in the sterilizing tank; and the piston is positioned in the pipe wall, is tightly attached to the pipe wall, can move up and down in the pipe wall and is used for controlling the air in the sterilizing tank to be discharged from the air outlet.

In some embodiments, a displacement sensor is arranged on the top of the pipe wall, and when the piston moves to contact with the displacement sensor, the piston is controlled to move reversely to block the air outlet.

In some embodiments, the connecting air pipe is provided with a first electromagnetic valve located between the sterilization tank and the pressure relief air bag, the top of the pipe wall is provided with a displacement sensor, when the piston moves to contact the displacement sensor, the first electromagnetic valve is controlled to be opened, and the air in the pressure relief air bag and the fan enters the sterilization tank.

In some embodiments, a pressure relief port is formed in the top of the tube wall for venting gas pressure generated by the movement of the piston.

In some embodiments, the pressure relief balloon comprises an impermeable cloth and a stay bar for supporting the impermeable cloth, and the stay bar can slide on the impermeable cloth when the pressure relief balloon is inflated and deflated.

In some embodiments, the impermeable cloth is fixedly provided with a guide rail, the stay bar moves on the guide rail through a sliding block, and the tail end of the guide rail is provided with a scratch-proof hook.

The technical scheme provided by the invention has the beneficial effects that:

the embodiment of the invention provides an air sterilizer, wherein the ultraviolet sterilizing lamp, the plasma sterilizer and the smoke spraying sterilizer are arranged in the sterilizing tank, three sterilizing methods are integrated into a whole to sterilize the air in the sterilizing tank, so that the sterilizing range is wider, the sterilizing efficiency is improved, and the air can be sterilized at one time, and the pressure relief airbag is arranged between the fan and the sterilizing tank and can temporarily store the air entering the connecting air pipe from the fan, and in the process of continuously storing the air by the pressure relief airbag, the air which is being sterilized in the sterilizing tank can temporarily stay in the sterilizing tank for a period of time so that the air in the sterilizing tank can be sufficiently sterilized, so that the air in a hospital can continuously enter the fan, the air in the hospital is thoroughly disinfected in real time, manual spraying is not needed, and the disinfection efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of an air sterilizer according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a pressure relief bladder of an air sterilizer according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a stay bar of an air sterilizer according to an embodiment of the present invention.

In the figure: 1. a sterilizing tank; 11. an ultraviolet disinfection lamp; 12. a plasma sterilizer; 13. a smoke spray sterilizer; 131. a smoke inlet; 132. a shower pipe; 14. a power supply box; 15. a tank body; 2. an air outlet pipe; 21. a piston; 22. a displacement sensor; 23. a pressure relief port; 24. an air outlet; 25. a tube wall; 3. connecting an air pipe; 31. sealing sleeves; 32. a first solenoid valve; 33. the wall of the duct; 4. a pressure relief air bag; 41. a stay bar; 411. a slider; 412. a limiting crosspiece; 413. a guide rail; 42. anti-seepage cloth; 43. a column; 431. an air outlet; 44. a second solenoid valve; 45. a scratch-resistant hook; 5. a fan; 51. an air inlet pipe; 52. and an air supply pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The embodiment of the invention provides an air sterilizer, which can solve the problems that the air in a ward cannot be thoroughly sterilized in real time and the efficiency is low through a manual spraying mode in the related art.

Referring to fig. 1, an air sterilizer provided for an embodiment of the present invention includes: the fan 5 is used for connecting a ventilation system of a hospital; a sterilizing tank 1 for sterilizing air introduced into the blower 5; the connecting air pipe 3 is connected with the fan 5 and the sterilizing tank 1; and the pressure relief air bag 4 is communicated with the connecting air pipe 3 and is used for temporarily storing air entering the fan 5.

Referring to fig. 1, in some embodiments, the blower 5 may include an air inlet duct 51 at one end thereof, the air inlet duct 51 being connected to a ventilation system of the hospital which discharges contaminated air containing viruses in a hospital room to the blower 5 outdoors, and the blower 5 may further include a blower duct 52 at the other end thereof, the air being introduced from the air inlet duct 51 to the blower duct 52.

Referring to fig. 1, in some alternative embodiments, the sterilization tank 1 may include a tank body 15, the tank body 15 may have a hollow inner cavity, the sterilization tank 1 may further include a plurality of ultraviolet sterilization lamps 11 disposed in the tank body 15, the ultraviolet sterilization lamps 11 may be disposed at the bottom of the tank body 15 and distributed in a ring shape, the sterilization tank 1 may include a plasma sterilizer 12 disposed at the center of the bottom of the tank body 15, and the plasma sterilizer 12 may be located in the ring shape formed by the ultraviolet sterilization lamps 11; the sterilizing tank 1 may further include a smoke spray sterilizer 13, the smoke spray sterilizer 13 may include a smoke inlet 131 installed outside the tank body 15, and the smoke inlet 131 may be provided at the top of the tank body 15, and a spray pipe 132 communicated with the smoke inlet 131, wherein the spray pipe 132 can be installed inside the tank body 15, and is preferably arranged at the top of the tank body 15 and distributed annularly, so that the air in the tank body 15 can be fully sprayed to the smoke disinfectant, the ultraviolet disinfection lamp 11, the plasma sterilizer 12 and the smoke spray sterilizer 13 are all used for fully sterilizing the air in the tank body 15, the disinfection tank 1 may further comprise a power box 14, and the power box 14 may be installed at the center of the outer bottom of the tank body 15 and used for supplying power to the disinfection tank 1.

Referring to fig. 1, in some embodiments, the connecting duct 3 is used for conveying air entering the blower 5 into the tank 15 for sterilization, and may include a duct wall 33, the duct wall 33 may be a hollow tube, one end of the duct wall 33 is connected to the blast pipe 52, the other end is connected to the air inlet of the tank 15, the duct wall 33 may be connected to the blast pipe 52 through a sealing sleeve 31, the sealing sleeve 31 is sleeved outside the duct wall 33 and the blast pipe 52, and the sealing sleeve 31 may be in threaded connection with an end of the duct wall 33 and an end of the blast pipe 52, so as to connect the duct wall 33 and the blast pipe 52 together and seal a joint of the duct wall 33 and the blast pipe 52 tightly, and a sealing sleeve 31 having the same structure as that of the end of the blast pipe 52 may be sleeved at a joint of the duct wall 33 and the tank 15, thereby sealingly connecting the duct wall 33 to the tank 15; the middle part of the air duct wall 33 can be further provided with a first electromagnetic valve 32, and the air quantity entering the tank body 15 can be controlled by controlling the opening and closing of the first electromagnetic valve.

Referring to fig. 1, in some alternative embodiments, the top of the tank 15 may be communicated with an air outlet pipe 2, the air outlet pipe 2 may include a pipe wall 25, the pipe wall 25 may also be a hollow pipe body, the pipe wall 25 is communicated with the tank 15, the air outlet pipe 2 may further include an air outlet 24 communicated with the pipe wall 25, the air outlet 24 may be located on one side of the pipe wall 25 and may not extend to the top of the pipe wall 25, a piston 21 may be disposed in the pipe wall 25, the piston 21 may be closely attached to the pipe wall 25, so that air at one end of the pipe wall 25 cannot cross over the piston 21 to enter the opposite end of the pipe wall 25, the piston 21 may be driven by air pressure in the pipe wall 25 to move up and down, when the lower end of the piston 21 moves up to the air outlet 24, the air outlet 24 is communicated with the tank 15, the sterilized air in the tank 15 can reach the air outlet 24 through the pipe wall 25 to be discharged, a displacement sensor 22 can be arranged on the top of the pipe wall 25, the displacement sensor 22 is used for receiving the displacement of the piston 21 moving upwards, when the piston 21 moves upwards to contact the displacement sensor 22 and the displacement sensor 22 retracts upwards to a certain extent, the lower end of the piston 21 is located above the lower end of the air outlet 24, the sterilized air in the tank 15 can be completely discharged from the air outlet 24, at this time, the piston 21 moves downwards under the action of gravity, and the displacement sensor 22 can trigger a control logic to control the first electromagnetic valve 32 to be opened, so that the air enters the tank 15 again; the top of the pipe wall 25 may further be provided with a pressure relief port 23 located at one side of the displacement sensor 22, and the pressure relief port 23 is used for exhausting gas pressure generated in the upward movement of the piston 21.

Referring to fig. 1, in some alternative embodiments, the piston 21 may be driven to move upward by air pressure, wherein the piston 21 may be driven to move upward by air pressure while the tank 15 is being charged with air, or the piston 21 may be fixed to the pipe wall 25 during the charging of the tank 15, when the air pressure in the tank 15 reaches a certain value, the first electromagnetic valve 32 is closed, the air in the tank 15 is sterilized for a certain period of time, and the piston 21 is released several seconds before the sterilization is completed, so that the piston 21 is driven to move upward by air pressure.

Referring to fig. 1 and 2, in some embodiments, the pressure relief airbag 4 may be located between the blower 5 and the sterilization can 1, and the pressure relief airbag 4 may include a pillar 43 communicating with the duct wall 33, the pillar 43 may also be a hollow tube body, so that air in the duct wall 33 may enter the pillar 43, the pressure relief airbag 4 may further include a barrier cloth 42, the barrier cloth 42 may be a sealed soft bag body, and a top of the barrier cloth 42 may be fixed to a top end of the pillar 43, a bottom of the barrier cloth 42 may be fixed to a lower portion of the pillar 43, so that an upper portion of the pillar 43 is located inside the barrier cloth 42, and a portion of the pillar 43 located between the top and the bottom of the barrier cloth 42 may be provided with an air outlet 431, so that air in the pillar 43 may enter the barrier cloth 42 through the air outlet 431, the impermeable sheet 42 can expand under the action of air pressure to accommodate more air.

Referring to fig. 2 and 3, in some alternative embodiments, the pressure relief airbag 4 may further include a stay 41, the stay 41 may be disposed in the impermeable cloth 42 in an umbrella shape to support the impermeable cloth 42, a lower end of the stay 41 may be fixed to the pillar 43 together with a bottom of the impermeable cloth 42, a guide 413 may be fixedly disposed on the impermeable cloth 42, a slider 411 may be disposed on the guide 413, the stay 41 is connected to the slider 411 to slide up and down on the guide 413, a limiting ledge 412 is disposed on an upper portion and a lower portion of the guide 413, the slider 411 is disposed between the upper and lower limiting ledges 412, the limiting ledge 412 is used to limit excessive displacement of the slider 411, an arc-shaped scratch preventing hook 45 may be further disposed at a terminal end of the guide 413, the scratch preventing hook 45 is not fixedly connected to the impermeable cloth 42, the scratch-proof hook 45 is used for preventing the guide rail 413 from tearing the impermeable cloth 42 to leak non-sterile air during the movement of the stay 41.

Referring to fig. 1 and 2, in some embodiments, the pressure relief air bag 4 may further include a second solenoid valve 44 located at a lower portion of the pillar 43, and the second solenoid valve 44 may be located outside the impermeable cloth 42, and the air from the air supply pipe 52 may be controlled to flow into and out of the pressure relief air bag 4 by controlling the opening and closing of the second solenoid valve 44, when the second solenoid valve 44 is opened and the air flows into the pillar 43, the air fills the impermeable cloth 42 to inflate the impermeable cloth 42, the stay 41 moves downward to play a role of guiding and fixing the shape of the impermeable cloth 42, when the second solenoid valve 44 is opened and the air is discharged from the impermeable cloth 42, the impermeable cloth 42 naturally hangs down to be in a relaxed state, the stay 41 moves upward, and when the second solenoid valve 44 is closed, the air can not enter the pressure relief air bag 4, the impermeable cloth 42 is also in a loose state, and the stay bar 41 is positioned at the uppermost end; through one side of connecting tuber pipe 3 sets up pressure release gasbag 4 is as gas storage device, can improve the ability that air disinfector bore more air alleviates the burden that fan 5 was adjusted, just vaulting pole 41 can improve the tolerance ability of prevention of seepage cloth 42 plays the stable effect of stereotyping.

Referring to fig. 1, the air sterilizer provided by the embodiment of the present invention may be disposed outside a hospital, the air inlet pipe 51 is directly connected to a ventilation system of the hospital, space inside the hospital is not occupied, and a plurality of air sterilizers may be disposed outside each room to ensure large air flow in the room, and the whole operation process of the air sterilizer is as follows: firstly, the first electromagnetic valve 32 is opened, the second electromagnetic valve 44 is closed, so that the air in the air supply pipe 52 enters the tank body 15, at this time, the lower end of the piston 21 is positioned below the air outlet 24, so that the air entering the tank body 15 cannot be discharged from the air outlet 24, when the air pressure in the tank body 15 reaches a set value, the first electromagnetic valve 32 is controlled to be closed, the second electromagnetic valve 44 is opened, so that the air in the air supply pipe 52 continues to enter the pressure relief air bag 4 for temporary storage, during the process of filling air into the pressure relief air bag 4, the air in the tank body 15 can stay for a period of time to be sufficiently sterilized, and during the process of sterilizing the air in the tank body 15, the piston 21 is driven by the air pressure to move upwards, and when the piston 21 moves to the upper end of the piston 21 to contact the displacement sensor 22 and the displacement sensor 22 retracts upwards to a certain degree, the sterilized air in the tank 15 is completely discharged from the air outlet 24, and the displacement sensor 22 controls to open the first electromagnetic valve 32 and the second electromagnetic valve 44, so that the air stored in the pressure relief air bag 4 and the air in the air supply pipe 52 both enter the tank 15, and the air in the hospital room can continuously enter the air inlet pipe 51.

The air sterilizer provided by the embodiment of the invention has the following principle:

because the ultraviolet disinfection lamp 11, the plasma sterilizer 12 and the smoke spraying sterilizer 13 are arranged in the disinfection tank 1, three disinfection methods are integrated, the air in the disinfection tank 1 is disinfected, the disinfection range is wider, the disinfection efficiency is improved, the air can be disinfected at one time, and because the pressure relief airbag 4 is arranged between the fan 5 and the disinfection tank 1, the pressure relief airbag 4 can temporarily store the air entering the connecting air pipe 3 from the fan 5, in the process of continuously storing the air by the pressure relief airbag 4, the air which is disinfected in the disinfection tank 1 can temporarily stay in the disinfection tank 1 for a period of time, so that the air in the disinfection tank 1 can be ensured to have good disinfection effect after being disinfected for a period of time, and after the air in the disinfection tank 1 is disinfected, air of storage in the pressure release gasbag 4 and air in the fan 5 is carried once more to in the disinfection jar 1, because pressure release gasbag 4 can temporary storage partial air, consequently, air in the hospital can constantly get into in the fan 5, it is right air in the hospital carries out real-time thorough disinfection, and need not carry out the manual work and spray, has improved disinfection efficiency.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air sterilizer, characterized in that it comprises:

the fan (5) is used for connecting a ventilation system of a hospital;

the sterilizing tank (1) is used for sterilizing air entering the fan (5), and an ultraviolet sterilizing lamp (11), a plasma sterilizer (12) and a smoke spraying sterilizer (13) are arranged in the sterilizing tank (1) and are used for sterilizing the air;

the connecting air pipe (3) is connected with the fan (5) at one end and connected with the sterilizing tank (1) at the other end, and is used for conveying the air entering the fan (5) to the sterilizing tank (1);

and the pressure relief air bag (4) is arranged between the fan (5) and the disinfection tank (1), and the pressure relief air bag (4) is communicated with the connecting air pipe (3) and used for temporarily storing the air entering the fan (5) when the disinfection tank (1) sterilizes the air.

2. An air sterilizer as claimed in claim 1 wherein:

the sterilizing tank (1) comprises a tank body (15), the ultraviolet sterilizing lamps (11) are arranged at the bottom of the tank body (15) and distributed in an annular shape, and the plasma sterilizer (12) is arranged in the annular shape formed by the ultraviolet sterilizing lamps (11).

3. An air sterilizer as claimed in claim 1 wherein:

the sterilizing tank (1) comprises a tank body (15), the smoke spraying sterilizer (13) comprises a smoke inlet (131) and a spray pipe (132), the smoke inlet (131) is arranged at the outer top of the tank body (15), the spray pipe (132) is connected with the smoke inlet (131), and the spray pipe (132) is arranged at the inner top of the tank body (15).

4. An air sterilizer as claimed in claim 1 wherein:

connecting tuber pipe (3) are equipped with and are located disinfection jar (1) with first solenoid valve (32) between pressure release gasbag (4), pressure release gasbag (4) with the junction of connecting tuber pipe (3) is equipped with second solenoid valve (44), works as when pressure in disinfection jar (1) reaches the setting value, control first solenoid valve (32) are closed, second solenoid valve (44) are opened, the air admission pressure release gasbag (4).

5. An air sterilizer as claimed in claim 1, further comprising an air outlet duct (2) connected to the sterilizing tank (1), the air outlet duct (2) comprising:

a tube wall (25) communicating with the sterilization tank (1);

the air outlet (24) is communicated with the pipe wall (25), is positioned on one side of the pipe wall (25) and is used for discharging the sterilized air in the sterilizing tank (1);

and the piston (21) is positioned in the pipe wall (25), the piston (21) is tightly attached to the pipe wall (25) and can move up and down in the pipe wall (25) to control the air in the disinfection tank (1) to be discharged from the air outlet (24).

6. An air sterilizer as claimed in claim 5 wherein:

and a displacement sensor (22) is arranged at the top of the pipe wall (25), and when the piston (21) moves to contact with the displacement sensor (22), the piston (21) is controlled to move reversely to block the air outlet (24).

7. An air sterilizer as claimed in claim 5 wherein:

connecting tuber pipe (3) are equipped with and are located disinfection jar (1) with first solenoid valve (32) between pressure release gasbag (4), the top of pipe wall (25) is equipped with displacement sensor (22), works as piston (21) remove to the contact during displacement sensor (22), control first solenoid valve (32) are opened, pressure release gasbag (4) with air admission in fan (5) disinfection jar (1).

8. An air sterilizer as claimed in claim 5 wherein:

the top of the pipe wall (25) is provided with a pressure relief opening (23) for exhausting gas pressure generated in the movement of the piston (21).

9. An air sterilizer as claimed in claim 1 wherein:

the pressure relief air bag (4) comprises anti-seepage cloth (42) and a stay bar (41) used for supporting the anti-seepage cloth (42), and when the pressure relief air bag (4) is inflated and deflated, the stay bar (41) can slide on the anti-seepage cloth (42).

10. An air sterilizer of claim 9 wherein:

the anti-seepage cloth (42) is fixedly provided with a guide rail (413), the support rod (41) moves on the guide rail (413) through a sliding block (411), and the tail end of the guide rail (413) is provided with a scratch-proof hook (45).