WO2021253219A1

WO2021253219A1 - Air purification system for temporary emergency shelter hospital

Info

Publication number: WO2021253219A1
Application number: PCT/CN2020/096325
Authority: WO
Inventors: 曲祥雯; 曾庆田; 宋戈; 黄鹤松; 陈达
Original assignee: 山东科技大学
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-12-23

Abstract

An air purification system for a temporary emergency shelter hospital (2). The system is characterized in that an air exhaust opening (14) is provided in a back wall of a building where the emergency shelter hospital (2) is temporarily established; an exhaust fan (3) is mounted at the position, close to the air exhaust opening (14), outside the building; an air draft pipeline (13) is connected between an air inlet of the exhaust fan (3) and the air exhaust opening (14) of the building; an air exhaust pipeline (12) is connected to an air outlet of the exhaust fan (3); and an atomization disinfection device, an ultraviolet sterilization device (11) and a reflux condensation device (10) are mounted on the air exhaust pipeline (12). When the system is started, air inside the shelter hospital (2) forcibly flows and is exhausted from the exhaust fan (3), and the exhausted air is then mixed with medicine mist of the atomization disinfection device, and is disinfected and purified by the ultraviolet sterilization device (11), thus not causing secondary pollution to air surrounding the shelter hospital (2). The present application is low in construction cost, easy to assemble and high in speed, so as to adapt to emergency situations during pandemics of infectious diseases.

Description

Air purification system for temporary emergency shelter hospital

Technical field

The invention relates to medical and health facilities.

Background technique

At present, various infectious diseases in the world continue to appear, especially new viruses are often sudden and strong, and a large number of patients will be infected by the epidemic in a short period of time. Due to the limitation of existing infectious disease hospital beds, it is often difficult for a country, a province, a municipality or a region to cope. Only ordinary hospitals can be transformed into temporary infectious disease hospitals to accept infectious patients, or temporary emergency hospitals (such as Huoshenshan Hospital in Wuhan, Raytheon Mountain Hospital), or use emergency beds, medical studios and medical equipment (called Fangcai hospitals) in buildings that can shelter from wind and rain, such as stadiums, theaters and halls. However, in these emergency and temporary infectious disease hospitals, due to the concentration of patients, if the air that is excluded from the outside is not disinfected, it will pollute the surrounding environment. Some viruses and germs that use the air will continue to spread to the surrounding people, making it difficult to spread the epidemic. control.

Summary of the invention

In view of the above-mentioned air pollution problem of the temporary emergency shelter hospital, this application invents an air purification system that can be quickly installed and put into use as soon as possible.

An air purification system for temporary emergency shelter hospitals, which is characterized in:

The system includes a ventilation system, an atomization disinfection device, an ultraviolet disinfection device and a condensing reflux device.

The described ventilation system is to arrange an exhaust outlet on the back wall of the building where the shelter hospital is temporarily built, and an exhaust fan room is arranged outside the building near the exhaust outlet, and the exhaust fan room needs to be silenced. , Install the exhaust fan in the exhaust fan room, connect the exhaust duct between the air inlet of the exhaust fan and the exhaust port of the building, and connect the exhaust duct to the air outlet of the exhaust fan, thus forming the air intake from the building entrance and exit, and the exhaust duct Wind-forced air flow system.

The atomization disinfection device is a branch pipe connected in parallel with the exhaust pipe, a venturi tube is connected in series to the branch pipe, a suction pipe is connected to the negative pressure port of the throat of the venturi, and a suction pipe is inserted into the In the disinfection tank, the disinfection tank is equipped with disinfection liquid. When the bypass wind pressure passes through the venturi tube, the disinfection liquid is drawn. When these droplets enter the throat and encounter high-speed airflow, the spray is mixed in the exhaust duct. In the wind current, the polluted air is initially purified.

Further, in order to increase the atomization effect of the disinfectant liquid, the negative pressure port at the throat of the Venturi tube is composed of multiple small negative pressure ports, and the disinfectant liquid enters the venturi in a drop shape. The above-mentioned suction tube is divided into multiple branches. The fork tube is connected with the corresponding negative pressure port.

The described ultraviolet sterilization device is equipped with an ultraviolet sterilization lamp tube in the shell, and the shell should have enough space to reduce the wind speed to ensure sufficient light time. The shell is provided with air flow inlets and outlets, air flow inlets and exhaust ducts The outlet connection.

The condensing reflux device is provided with a fin-type condensing component in the shell; the shell is provided with an air flow inlet and an outlet, and the air flow inlet is connected with the air outlet of the ultraviolet sterilization device; the air outlet is connected with the chimney pipe to directly lead to the atmosphere; at the bottom of the shell Equipped with a condensate pipe, the condensate pipe is connected to the waste liquid irrigation.

The working procedure is: the system starts, the exhaust fan outputs wind pressure, and the air in the shelter is forced to flow out from the exhaust fan. At the same time, the atomization disinfection device sprays a few micrometers of pesticide mist into the exhaust pipe to mix with the polluted gas. Viruses and germs suspended in the gas are preliminarily eliminated, and they are eliminated again when they pass through the ultraviolet sterilization device. The disinfected mixed gas finally passes through the condensing reflux device to condense the moisture in the mixed gas, and the clean air flows from the chimney. The pipe is directly connected to the atmosphere, and the condensed waste water flows into the waste liquid irrigation through the condensate pipe.

Further, the exhaust fan is controlled by a frequency converter, and the ventilation volume is adjusted through the control speed of the exhaust fan.

The beneficial effect of the present invention is that the system utilizes the principle of the Venturi effect and installs a venturi tube instead of the atomization device. The structure is simple, no additional atomization equipment is required, and the investment is small and effective; the polluted air discharged from the infectious ward passes through the mist The mixed disinfection and ultraviolet disinfection are thoroughly purified and no longer cause secondary pollution to the air around the hospital. The invention has low construction cost, easy assembly and high speed, so as to adapt to emergencies of infectious diseases.

Description of the drawings

Fig. 1 is a schematic diagram of an embodiment, Fig. 2 is an enlarged view of a venturi, and Fig. 3 is a cross-sectional view of A-A in Fig. 2.

Legend: 1-square cabin entrance and exit, 2-square cabin hospital, 3-exhaust fan, 4-venturi tube, 5-sterilization tank, 6-suction pipe, 7-waste liquid irrigation, 8-condensate pipe, 9 -Chimney pipe, 10-condensation reflux device, 11-ultraviolet sterilization device, 12-exhaust duct, 13-exhaust duct, 14-exhaust outlet, 15-exhaust fan room.

detailed description

As shown in Fig. 1, an air purification system used in a temporary emergency shelter hospital includes a ventilation system, an atomization disinfection device, an ultraviolet disinfection device 11, and a condensing reflux device 10.

The described ventilation system is to arrange an exhaust outlet 14 on the back wall of the temporarily built shelter hospital 2, and arrange an exhaust fan room 15 and an exhaust fan room 15 outside the building 2 near the exhaust outlet 14 Muffler treatment is required. The exhaust fan 3 is installed in the exhaust fan room 15, and the exhaust duct 13 is connected between the air inlet of the exhaust fan 3 and the air outlet 14 of the shelter. A forced air flow system that enters the cabin through the door 1 and exits from the exhaust duct 12.

The atomization disinfection device is a branch pipe connected in parallel with the exhaust pipe 12, a venturi 4 is connected in series to the branch pipe, and the suction pipe 6 is connected to the negative pressure port of the throat of the venturi 4, and the suction The liquid tube 6 is inserted into a disinfection tank 5. The disinfection tank 5 is equipped with disinfection liquid. When the bypass wind pressure passes through the venturi 4, the disinfection liquid is drawn. When these droplets enter the throat and encounter high-speed airflow, The generated chemical mist is mixed in the wind flow of the exhaust duct 12 to preliminarily purify the polluted air.

As shown in Figures 2 and 3, in order to increase the atomization effect of the disinfectant liquid, the negative pressure port at the throat of the Venturi tube is composed of multiple small negative pressure ports, and the disinfectant liquid enters the Venturi tube 4 in the form of drops. The liquid suction pipe 6 is divided into a plurality of branch pipes and connected to the corresponding negative pressure ports.

The described ultraviolet sterilization device 11 is equipped with an ultraviolet sterilization lamp tube in the housing, and the housing should have enough space to reduce the wind speed and ensure sufficient light time. The housing is provided with air flow inlets and outlets, air flow inlets and exhaust The outlet connection of the pipeline.

The condensing reflux device 10 is provided with a fin-type condensing component in the shell; the shell is provided with an air flow inlet and an outlet, and the air flow inlet is connected with the air flow outlet of the ultraviolet sterilization device 10; the air flow outlet is connected with the chimney tube 9 and directly communicates with the atmosphere; A condensate pipe 8 is provided at the bottom of the casing, and the condensate pipe 8 is connected to the waste liquid tank 7.

The working procedure is: the system starts, the exhaust fan 3 outputs the wind pressure, and the air in the shelter hospital 2 is forced to flow out from the exhaust fan 3 at the same time. The contaminated gas is mixed to make the virus and germs suspended in the gas get preliminarily sterilized. After passing through the ultraviolet sterilization device 11, they are sterilized again. The sterilized mixed gas finally passes through the condensing reflux device 10 to condense the moisture in the mixed gas. Then, clean air flows directly from the chimney tube 9 to the atmosphere, and the condensed waste water flows into the waste liquid tank 7 through the condensate pipe 8.

Further, the exhaust fan 3 is controlled by a frequency converter, and the ventilation volume is adjusted by controlling the speed of the exhaust fan.

The above is an embodiment of the present invention, but the present invention is not limited to the above-mentioned embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

The air purification system used in temporary emergency shelter hospitals is characterized in that: the system includes a ventilation system, an atomization disinfection device, an ultraviolet sterilization device and a condensation reflux device;

The described ventilation system is to arrange an exhaust outlet on the back wall of the building where the shelter hospital is temporarily built, and an exhaust fan room is arranged outside the building near the exhaust outlet, and the exhaust fan room needs to be silenced. , Install the exhaust fan in the exhaust fan room, connect the exhaust duct between the air inlet of the exhaust fan and the exhaust port of the building, and connect the exhaust duct to the air outlet of the exhaust fan, thus forming the air intake from the building entrance and exit, and the exhaust duct Wind forced air flow system;

The atomization disinfection device is a branch pipe connected in parallel with the exhaust pipe, a venturi tube is connected in series to the branch pipe, a suction pipe is connected to the negative pressure port of the throat of the venturi, and a suction pipe is inserted into the In the disinfection tank, there is a disinfectant liquid in the disinfection tank. When the bypass wind pressure passes through the venturi tube, the disinfectant liquid is drawn into the throat and encounters high-speed airflow, and the spray is mixed in the air flow of the exhaust duct. Preliminary purification of polluted air;

The described ultraviolet sterilization device is equipped with an ultraviolet sterilization lamp tube in the shell. The shell should have enough space to reduce the wind speed to ensure that the polluted air has a certain light time. The shell is provided with an air flow inlet and an outlet, and the air flow inlet and The outlet connection of the exhaust duct;

The condensing reflux device is provided with a fin-type condensing component in the shell; the shell is provided with an air flow inlet and an outlet, and the air flow inlet is connected with the air outlet of the ultraviolet sterilization device; the air outlet is connected with the chimney pipe to directly lead to the atmosphere; at the bottom of the shell Equipped with a condensate pipe, the condensate pipe is connected to the waste liquid irrigation.
The air purification system of claim 1, wherein the negative pressure port of the venturi throat is a plurality of small negative pressure ports, and the suction pipe is divided into a plurality of branch pipes and corresponding The negative pressure port connection.
The air purification system according to claim 1 or 2, wherein the exhaust fan is controlled by a frequency converter.
A working method of the air purification system according to claim 1, characterized in that:

The system is activated, and the exhaust fan outputs air pressure to force the contaminated air in the shelter to flow out of the exhaust fan. At the same time, the atomization disinfection device sprays the mist and the contaminated gas into the exhaust duct to mix, so that the virus and germs suspended in the gas can be obtained Preliminary sterilization, it will be sterilized again after passing through the ultraviolet sterilization device. The sterilized mixed gas is condensed by the condensing reflux device, so that the moisture in the mixed gas is condensed, and the clean air passes through the chimney directly to the atmosphere, and the condensed waste water It flows into the waste liquid irrigation through the condensate pipe.