CN205980022U - Negative pressure air purification and disinfection machine - Google Patents

Abstract

Negative pressure air purification and disinfection machine, equipped with coarse and medium effect filter, activated carbon filter, formaldehyde removal decomposition filter, high efficiency filter for enzyme sterilization, ballast, ultraviolet lamp, circulation fan in the box; when it needs to be discharged to the outside When the exhaust gas is exhausted, open the exhaust gas pipe to discharge the exhaust gas through the air outlet assembly installed on the outdoor wall; through the air duct switch built in the T-shaped tee, fresh air is sucked in, and the fresh air is strongly compensated indoors through the fresh air pipe and the air outlet. Keep the indoor air pressure lower than the outdoor to prevent indoor viruses, bacteria and other pollutants from spreading out with the air circulation. It is suitable for use in infectious disease operating rooms, supply room decontamination areas and isolation wards where diseases are transmitted through air and breathing.

Description

Negative pressure air purification and disinfection machine

【Technical field】

The utility model relates to a negative pressure air purification and disinfection machine used in a negative pressure isolation ward for respiratory infectious diseases.

【Background technique】

Ordinary air sterilizers and air purifiers sterilize the air in the room and discharge it indoors. The disadvantage is that the indoor air pressure is equal to the outdoor air pressure. For the respiratory infectious disease ward, the air with infectious virus and bacteria is easy to spread outside the ward, forming the spread of germs.

【Content of invention】

The purpose of the utility model is to overcome the above disadvantages and provide a negative pressure air purification and disinfection machine.

The utility model is used in negative pressure isolation wards. Firstly, the utility model discharges the sterilized clean air to the outside to avoid the external transmission of viruses and bacteria. Secondly, it can make fresh air enter the room through the fresh air pipeline. Thirdly, the negative pressure isolation ward is an effective medical isolation facility for controlling respiratory infectious diseases and cutting off air and droplet transmission routes. The utility model can make the indoor air pressure of the negative pressure isolation ward It is lower than the outside and forms a negative pressure gradient in the ward to control the impact of indoor polluted air on the outside world.

The negative pressure air purification and disinfection machine has a structural part and a circuit control part. Sterilized high-efficiency filter, ballast, ultraviolet lamp, and circulating fan; a T-shaped tee is connected to the air outlet on the top of the box, and there is an air duct switch inside the T-shaped tee; one end of the exhaust gas pipe is installed on the T of the box. One side of the T-shaped tee, the other end of the exhaust pipe is connected to the outdoor air outlet assembly through the hole on the outer wall; one end of the fresh air pipe is installed on the other side of the T-shaped tee, and the other end of the fresh air pipe is connected to the air outlet;

The circuit control part is: there is a fresh air duct switch key on the power control board, the fresh air duct switch key is connected to the air duct switch built in the T-shaped tee, there is a waste gas pipeline switch key on the power control board, and the waste gas pipeline switch key is connected to the T-shaped three-way switch. Through the built-in air duct switch; the power supply is connected to the ballast, the ballast is connected to the ultraviolet lamp, and the power supply is connected to the circulation fan.

The negative pressure air purification and disinfection machine is characterized in that: the negative pressure air purification and disinfection machine is installed between the ceiling and the suspended ceiling in a ceiling-embedded manner, and is fixed on the ceiling with reinforcing ribs through the expansion tube. The screw rod determines the appropriate ceiling height, and the corresponding matching nuts and flat spring washers are assembled for fastening.

The negative pressure air purification and disinfection machine is characterized in that: the ultraviolet lamp adopts ultraviolet C-band 253.7nm D-type ultraviolet tube.

The principle of the negative pressure air purifying and disinfecting machine for disinfecting infectious disease operating rooms, supply room decontamination areas and isolation wards through air, breathing, etc.,

A. Steps for the first function:

A1. If exhaust gas needs to be exhausted indoors, use the power control panel to automatically open the exhaust gas switch key, and the sterilizer will automatically close the fresh air duct; at the same time, turn on the circulation fan;

A2. Indoor bacteria-carrying air, dust, peculiar smell and bacteria attached to the dust are drawn with negative pressure airflow, and pass through coarse and medium-efficiency filters, activated carbon filters, formaldehyde-removing decomposition filters, and high-efficiency filters for enzyme sterilization; The medium-efficiency filter filters out the dust particles above 0.5μm in the air; the activated carbon filter can effectively absorb the peculiar smell and exhaust gas in the air, remove the pollutants in the air, and create conditions for the subsequent purification; the formaldehyde removal filter decomposes formaldehyde The high-efficiency filter for gas and enzyme sterilization is a high-efficiency nano-photocatalyst filter, which can effectively produce photocatalytic effect for a long time, generate strong oxidizing hydrogen and oxygen free radicals, and can effectively decompose harmful gases in the air, kill bacteria, inhibit virus activity, and break it down into harmless substances;

A3. With the exhaust of the circulating fan, the exhaust gas enters the high-intensity ultraviolet lamp area in the machine; under the irradiation of the ultraviolet lamp in the machine, a strong photocatalytic reaction occurs, which can effectively kill bacteria and viruses passing through the machine and decompose them. Harmful gases in the air, such as formaldehyde, benzene, ammonia, etc., can release negative oxygen ions, which can greatly improve the efficiency of the air sterilizer; after the bacteria in the air are killed, they are discharged to the outside through the exhaust pipe at the top of the box ;

B. Steps of the second function: under the function of this sterilizer, the sterilized air is discharged outside, so that the indoor air will always maintain negative pressure, effectively preventing the spread of bacteria and viruses in the hospital ward;

C. Steps of the third function: if fresh air is needed indoors, use the power control board to automatically open the air duct switch, close the exhaust air duct, turn off the ultraviolet lamp and the circulation fan; forcefully compensate for fresh air, and the fresh air passes through the exhaust outlet assembly and the exhaust pipe , From the air duct switch built in through the T-shaped tee, fresh air is sucked in, and fresh air is strongly compensated indoors through the fresh air duct and the air outlet.

Product performance and main features:

1. Negative pressure air purification and disinfection machine is based on WS/T311-2009 "Hospital Isolation Technical Specification", WS/T367-2012 "Medical Institution Disinfection Technical Specification", WS/T368-2012 "Hospital Air Purification Management Specification", GB 9706.1-2007 "Medical Electrical Equipment Part 1: General Safety Requirements", GB 13554-2008 "High Efficiency Air Filter", GB19258-2012 "Ultraviolet Germicidal Lamp", relevant provisions of the Ministry of Health "Disinfection Technical Specifications" (2002 Edition) , and combined with the characteristics of the product to determine the indoor air disinfection product. This patent application is a new concept of negative pressure isolation ward air purification and disinfection exhaust device. Under the action of this sterilizer, the indoor air will always maintain negative pressure, and the sterilized air will be discharged outside, effectively preventing the hospital ward Bacteria and viruses spread out.

2. The coarse and medium effect filter, activated carbon filter, formaldehyde-removing decomposition filter, and enzyme-sterilizing high-efficiency filter installed in the air inlet of the casing adopt unique multi-stage filtration, and its structure is designed as a unit combination, which is clean and hygienic It is very convenient, it can effectively absorb the peculiar smell and exhaust gas in the air, remove the pollutants in the air, and create conditions for the subsequent stage purification; it applies the high-tech nano photocatalyst semiconductor technology, and sets a high-efficiency filter for enzyme sterilization inside the casing. The high-efficiency nano-photocatalyst filter can effectively produce photocatalysis for a long time, generate strong oxidizing hydroxyl radicals, can effectively decompose harmful gases in the air, kill bacteria, inhibit virus activity, and decompose them into harmless substances. Under the irradiation of the ultraviolet lamp in the machine, a strong photocatalytic reaction occurs, which can effectively kill bacteria and viruses passing through the machine, decompose harmful gases in the air, such as formaldehyde, benzene, ammonia, etc., and release negative oxygen ions, Can greatly improve the efficiency of the air disinfection machine. Sterilization by ultraviolet radiation. The ultraviolet C-band 253.7nm D-type ultraviolet tube is used to further kill the bacteria in the air; when the ballast is working, a high-frequency voltage is generated, and the high-strength ultraviolet tube produces ultraviolet light to sterilize.

【Description of drawings】

Figure 1: Structural diagram of the negative pressure air purification and disinfection machine of the present invention.

【detailed description】

Part numbers in Figure 1: box 1, coarse and medium-efficiency filter 2-1, activated carbon filter 2-2, formaldehyde-removing decomposition filter 2-3, high-efficiency filter for enzyme sterilization 2-4, power control board 3 , plastic gusset 4 ballast 5, ultraviolet lamp 6, circulation fan 7, nut, flat spring washer 8, screw rod 9, T-shaped tee 10, fresh air pipe 11, waste gas pipe 12, air outlet 13, plastic gusset 14 Air outlet assembly 15, outdoor wall 16, pull-explosion expansion pipe 17, ceiling 18.

The negative pressure air purification and disinfection machine has a structural part and a circuit control part. It is characterized in that the structural part is as follows: a coarse and medium-efficiency filter 2-1 and an activated carbon filter 2-2 are sequentially installed in the box body 1 from bottom to top. , formaldehyde-removing filter screen 2-3, high-efficiency filter 2-4 for enzyme sterilization, ballast 5, ultraviolet lamp 6, circulation fan 7; a T-shaped tee is connected to the air outlet on the top of the box, and the T-shaped three-way There is an air duct switch inside the channel; one end of the waste gas pipe 12 is installed on one side of the T-shaped tee 10 on the box body 1, and the other end of the waste gas pipe 12 passes through the hole on the outer wall 16 and is connected to the outdoor air outlet assembly 15 ; One end of the fresh air duct 11 is installed on the other side of the T-shaped tee 10, and the other end of the fresh air duct 11 is connected to the air outlet 13;

The circuit control part is: there is a fresh air duct opening key on the power supply control board 3, and the fresh air duct opening key is connected to the air duct switch built in the T-shaped tee 10; The air channel switch of T-type tee 10 built-in.

The negative pressure air purification and disinfection machine is characterized in that: the negative pressure air purification and disinfection machine is installed between the ceiling and the suspended ceiling in a ceiling-embedded manner, and is fixed on the ceiling 18 with reinforcing ribs through the expansion tube 17 , determine the appropriate ceiling height through the screw mandrel 9, and assemble the corresponding matching nuts and flat spring washers 8 for fastening.

The negative pressure air purifying and disinfecting machine is characterized in that: the ultraviolet lamp (6) adopts an ultraviolet C-band 253.7nm D-type ultraviolet tube.

The principle of the negative pressure air purifying and disinfecting machine for disinfecting infectious disease operating rooms, supply room decontamination areas and isolation wards through air, breathing, etc., is characterized in that:

It is suitable for use in infectious disease operating rooms, decontamination areas of supply rooms and isolation wards where diseases are transmitted through air and breathing. It discharges high-quality air after purification and disinfection to the outside, keeps the indoor air pressure lower than the outdoors, and prevents indoor viruses, bacteria, etc. Pollutants are carried out with the air circulation. At the same time, fresh air introduces filtered clean air to supplement the room to control the infection caused by the spread of infectious germs.

Although the utility model has been disclosed through the above embodiments, the scope of protection of the utility model is not limited thereto. Under the condition of not departing from the concept of the utility model, the deformation and replacement of the above components will fall into place. Into the scope of claims of the present utility model.

Claims (3)

1. The negative pressure air purification and disinfection machine has a structural part and a circuit control part. It is characterized in that the structural part is as follows: a coarse and medium effect filter (2-1), Activated carbon filter (2-2), formaldehyde removal filter (2-3), high efficiency filter for enzyme sterilization (2-4), ballast (5), ultraviolet lamp (6), circulation fan (7) ; The top air outlet of the casing is connected with a T-shaped tee, and an air duct switch is arranged in the T-shaped tee; one end of the waste gas pipeline (12) is installed on one side of the T-shaped tee (10) on the casing (1) , the other end of the exhaust pipe (12) passes through the hole on the outer wall (16) and is connected to the outdoor air outlet assembly (15); one end of the fresh air pipe (11) is installed on the other side of the T-shaped tee (10) , the other end of the fresh air duct (11) is connected to the air outlet (13); The circuit control part is: there is a fresh air duct opening key on the power control board (3), the fresh air duct opening key is connected to the air duct switch built in the T-shaped tee (10), and the waste gas duct opening key is arranged on the power control board (3) , the waste gas pipe switch key connects the air duct switch built in the T-shaped tee (10). 2. The negative pressure air purification and disinfection machine according to claim 1, characterized in that: the negative pressure air purification and disinfection machine is installed between the ceiling and the suspended ceiling in a ceiling-embedded manner, and is fixed by pulling the expansion tube (17) On the ceiling (18) with reinforcing ribs, determine the appropriate ceiling height by the screw mandrel (9), and assemble the corresponding matching nuts and flat elastic washers (8) for fastening. 3. The negative pressure air purifying and disinfecting machine according to claim 1 or 2, characterized in that: the ultraviolet lamp (6) adopts an ultraviolet C-band 253.7nm D-type ultraviolet tube.