Example 1:
the novel photocatalytic air sterilizer shown in fig. 1 to 4 comprises a main machine 1 and a main machine control box 2 for controlling the whole air sterilizer; the host 1 is internally provided with an air supply fan 3, a filter component, a photocatalyst device 4 and a negative ion generator 5, wherein the negative ion generator is a negative ion generator which generates pure real negative ions in an < int-fion > mode in the prior art, generates more than 120 ten thousand per cubic centimeter of negative ions (air outlet measurement), generates or does not generate trace electromagnetic waves, ozone or positive ions; the air supply fan 3, the photocatalyst device 4 and the negative ion generator 5 are respectively in electric control connection with the host control box 2; the main engine 1 comprises a shell 11, and an air inlet grille 12, a front cover plate 13 and an exhaust grille 14 which are sequentially arranged on the front side of the shell 11 from top to bottom; the air inlet grille 12 and the air outlet grille 14 are respectively arranged at an air inlet and an air outlet of the main machine 1;
the air supply fan 3 is arranged on the inner side of the air inlet grid 12, and an air inlet of the air supply fan 3 faces the air inlet grid 12; the air outlet of the air supply fan 3 is communicated with the input end of the photocatalyst device 4; an odor sensor 6 is also arranged on the inner side of the air inlet grille 12 and positioned on the side surface of the air supply fan 3; the peculiar smell sensor 6 is in communication connection with the air supply fan 3 through the host machine control box 2, wherein the peculiar smell sensor is a low-concentration gas sensor and is used for sensing the smell of sucked polluted air and transmitting a gas concentration signal to a microprocessor of the host machine control box for analysis and processing, so that the air quantity of the air supply fan is automatically adjusted, and the filtering effectiveness is improved;
the negative ion generator 5 is arranged on the inner side of the exhaust grille 14, and the output end of the negative ion generator 5 faces the exhaust grille 14;
the filter assembly consists of a filter 7 and a multifunctional filter 8; the filter 7 is arranged between the air inlet grille 12 and the air supply fan 3; the multifunctional filter 8 is installed below the photocatalyst device 4 and is disposed between the photocatalyst device 4 and the anion generator 5.
The intake grill 12 and the exhaust grill 14 are provided obliquely to the upper and lower sides of the front cover 13, respectively.
The photocatalyst device 4 comprises a peripheral plate 41, a photocatalyst filter plate 42 and four ultraviolet lamp tubes 43 which are arranged inside the peripheral plate 41; the photocatalyst filter plate 42 is arranged opposite to the ultraviolet lamp tube 43, and the titanium dioxide photocatalyst generates a powerful decomposition function after being irradiated by ultraviolet rays, thereby achieving excellent antibacterial performance.
The photocatalyst filter plate 42 is a photocatalyst panel loaded with a high-activity corner-column-shaped titanium oxide photocatalyst 421, and compared with the traditional flat plate photocatalyst, the corner-column-shaped photocatalyst has larger adsorption area and stronger degerming and deodorizing capacity; the photocatalyst is an aggregation of angle columnar crystals, and compared with the traditional adhesive mode, the photocatalyst has larger contact area and stronger oxidation activity; no adhesive is adopted, and no secondary pollution is caused; the corner column shaped photocatalyst has obvious effect on removing bacteria and viruses floating in the air, and can remove organic matters and stink such as formaldehyde, benzene, Volatile Organic Compounds (VOC) and the like which cause building syndromes in a short time; in addition, after the germs such as colibacillus, influenza virus, MRSA, tuberculosis germs, bacterial spores and the like are purified by the air sterilizer of the utility model for one time, the sterilization rate is as high as more than 99 percent.
The air supply fan 3 is a cross flow fan which can powerfully suck polluted air, intelligently filter, convert into four gears, save energy and is safe and automatically shift to operate according to the pollution degree of the air.
The filter 7 is a primary filter screen for filtering the sucked air, removing the garbage and dust and removing the particles with the maximum diameter of 50 microns, wherein the primary filter screen can be an existing deodorizing filter screen or a dust collecting filter screen.
The multifunctional filter 8 is respectively communicated with the output end of the photocatalyst device 4 and the input end of the negative ion generator 5; the multifunctional filter 8 is a dust collecting filter capable of removing pollen and dust particles with a diameter of 5 microns, wherein the dust collecting filter can be an existing HEPA filter or a PM2.5 filter.
The host control box 2 comprises a box body 21, a display screen 22 and an operation panel 23 with operation buttons, wherein the display screen 22 and the operation panel 23 are arranged on the front side of the box body 21, and a control circuit board (not shown) is arranged inside the box body 21; the display screen 22 and the operation panel 23 are respectively electrically connected with the control circuit board; the control circuit board consists of a microprocessor and peripheral circuits thereof.
The front cover plate 13 covers the photocatalyst device 4 and the front side of the host control box 2, and a square hole 15 for installing a display screen and an operation panel is formed in the side surface of the lower part of the front cover plate 13.
A remote control signal receiver 9 for communicating with a remote controller is also arranged below the host control box 2; the remote control signal receiver 9 is electrically connected with the microprocessor of the host control box 2.
The novel photocatalysis air disinfection machine of the utility model has the advantages that under the conditions of the temperature of 22-25 ℃ and the relative humidity of 57-61% RH, the sterilization rate of white staphylococcus in the air of the aerosol chamber reaches more than 99% within 150 min; and under the conditions that the temperature is 21-22 ℃ and the relative humidity is 32-38% RH, the natural bacterium killing rate in the air in an indoor space for carrying out 20-24 m high-speed thin film cultivation within 150min is over 90%.
The utility model discloses a using method of a novel photocatalysis air sterilizer,
1. the confirmation and preparation before the operation are carried out,
1) inserting a power plug into a 220V socket;
2) the batteries (2 No. 7 dry batteries) are arranged in the remote controller;
the method comprises the following specific steps:
a. pressing the protecting cover and pulling along the arrow direction to take down the protecting cover;
b. 2 dry batteries are placed according to the + -indication;
c. covering the protecting cover;
2. an operation method of an automatic operation is provided,
1) when the power switch is started to be on, the display lamp of the 'running/stopping' is green;
2) after 2 minutes of warm-up operation, the display lamp of 'operation/stop' is changed from a flashing state to a long-bright state, and at the moment, the equipment starts to operate automatically;
3. the method of operation of the manual operation is,
when the automatic operation is performed, if an 'automatic/manual' switch is pressed, the display lamp is turned off, and the manual operation is started; but if the switch is pressed once again, the automatic operation is recovered;
4. a method for regulating the air quantity, which comprises the steps of,
1) when the equipment runs, the air volume switch is pressed, so that the air volume can be manually adjusted;
2) the air volume is 4 grades, and the air volume can be switched in sequence when the button of the air volume is pressed once;
5. the use method of the timer is that the timer is used,
1) the timer has 4 options, and when the timer switch is pressed, the display of the timer can be switched in sequence;
2) after the set time, the display lamp is turned off, and the operation can be automatically stopped;
method of operation "run/stop",
1) when the 'running/stopping' switch is pressed, the 'running' and the 'stopping' are switched;
2) in operation, the display lamp is green;
3) when the lamp stops, the display lamp is red, and at the moment, other display lamps are completely turned off;
4) when the operation is switched from 'stop' to 'operation', the operation is restarted from the operation state before the stop;
5) when the automatic operation is switched to the stop operation, the automatic operation is started again;
6) the same applies to "manual";
7) in the time operation, if the operation is stopped, the time setting is released; when the timing operation is required, please press a 'timer' switch to reset;
7. a method for using a remote control device,
1) the signal receiving part of the remote controller is arranged at the inner side of the exhaust grille, the white sticker of the exhaust grille can be used as the mark of the signal receiving part, and the front end pen of the remote controller is required to be directed towards the mark for operation; when a switch of the remote controller is pressed towards a host machine signal receiving part (remote control signal receiver), a Pi sound is emitted after the host machine senses the Pi sound;
2) if the 'running' switch is pressed, the running is started, and the 'stopping' switch is pressed to stop running;
3) the other switches such as "automatic/manual", "timer", and "air volume" have the same function as the switch of the main unit operation section (operation panel of the main unit console box).
The disinfection effect identification test of the novel photocatalysis air disinfection machine of the utility model,
firstly, testing strains: white staphylococcus 8032, the generation number of strains is 3-5, and bacterial suspension is prepared by PBS containing 0.03 mol/L;
one) of the methods comprises the steps of,
1) the preparation method of the suspension (tablet) comprises the following steps: reference is made to disinfection Specification (2002 edition) 2.1.1.2.3;
2) starting a high-efficiency filter for purification, and simultaneously adjusting the temperature of two aerosol chambers to be (20-25) DEG C and the humidity to be (50-70)% RH;
3) starting a microbial aerosol generator to carry out spray contamination, continuously stirring for 5min by a fan after the microbial aerosol generator is finished, and then standing for 5 min;
4) simultaneously, sampling a test group and a control group by using a six-level sieve mesh impact type microorganism sampler respectively, wherein the sampler is arranged at the height of 1.0m in the middle of the test chamber, and the sampling flow is 28.3L/min;
5) the test group runs the air sterilizer of the utility model, samples after acting for 120min, and the control group does not run the air sterilizer and samples in corresponding time period;
6) 2 parts of unused culture medium in the same batch are taken and cultured with a sample sampled in the test at the same time, the culture is used as a negative control, and the test is repeated for 3 times;
7) starting a highest wind speed gear in the test process;
8) calculating the formula:
natural mortality rate:
,V
0air bacteria content, V, before test for control group
1The air bacterial content after the test is the control group;
killing rate:
,V
1air bacteria content, V, for test group before test
2The air bacteria content after the test is the test group.
Two) the results of the test are shown in FIG. 5, in which the negative control group was aseptically grown.
Three) the conclusion is drawn,
through inspection, the sterilization effect of the sample in a 10m test cabin is started for 120min, the sterilization rate of the white staphylococcus is more than or equal to 99.90% in 3 times of test results, the test requirement of a simulation field test in sterilization technical specification (2002 edition) 2.1.3 is met, and the sterilization is qualified.
II, testing strains: natural bacteria in the air;
one) of the methods comprises the steps of,
1) respectively placing experimental devices into the test space at one time, closing doors and windows, and sampling with a six-level sieve mesh air impact type microorganism sampler for 0min to obtain a sample before test (positive control);
2) the air sterilizer of the utility model is opened, the air sterilizer is closed after 120min operation, and a six-level sieve mesh air impact type microorganism sampler is used for sampling to be used as a test sample after the test;
3) during sampling, the sampler is arranged at the height of 1.0m in the center of the room, and the sampling flow is 28.3L/min;
4) timely putting the collected test sample into a biochemical incubator at 37 ℃ for culturing for 24-48 h, and then counting bacterial colonies;
5) taking 2 parts of unused culture medium in the same batch, and culturing the culture medium and the sample sampled in the test at the same time to be used as negative control;
6) in the test period, the environmental temperature is between 24 and 26 ℃, the environmental humidity is between 58 and 63 percent RH, the test is repeated for 3 times, and the death rate of each time is calculated;
7) starting a highest wind speed gear in the test process;
8) calculating the formula:
the death rate is as follows:
,V
0for air bacteria content before the test, V
1Air bacteria content after the test.
Second, the test results are shown in fig. 6, in which the negative control group all grew aseptically.
Three) the conclusion is drawn,
through inspection, the machine opening sterilization effect of the sample in the 30m sealed space is 120min, the 3-time test results of the sterilization rate of the natural bacteria in the air are all more than or equal to 90%, the field test requirement in sterilization technical specification (2002 edition) 2.1.3 is met, and the sterilization is qualified.
The utility model relates to a harmful substance release amount (ozone) measuring test of the novel photocatalysis air sterilizer,
the method comprises the following steps:
1) the detection basis is as follows: GB21551.3-2010 special requirements for air purifiers with antibacterial, degerming, purifying functions for domestic and similar appliances;
2) ambient temperature: 23-27 ℃, and the ambient humidity: 40% RH-60% RH;
3) the air sterilizer to be tested is put into a clean space, and the background concentration value of the environment is tested;
4) after the machine is started to act, a T400 type ozone analyzer is adopted to test the ozone concentration at the 5cm position of the air outlet according to the standard requirement.
Second, the measurement results are shown in fig. 7.
Thirdly, the conclusion is drawn,
through the detection, the utility model discloses an air sterilizing machine harmful substance release amount (ozone) is <0.003mg/m thin, accords with the requirement in GB21551.3-2010 family expenses and the air purifier's of similar usage electrical apparatus special requirement 4.1 health safety nature of antibiotic, degerming, purification performance.
The ultraviolet ray leakage measuring test of the novel photocatalysis air sterilizer of the utility model,
the method comprises the following steps:
1) the detection basis is as follows: GB21551.3-2010 special requirements for air purifiers with antibacterial, degerming, purifying functions for domestic and similar appliances;
2) the air sterilizer to be tested is put into a clean space, and the background concentration value of the environment is tested;
3) after the machine is started to act and is stabilized for 5min, the irradiation intensity of the air disinfector is measured by an ultraviolet illuminometer at a position which is 30cm away from the outer surface of the air disinfector;
4) ambient temperature: 23-27 ℃, and the ambient humidity: 40% RH-60% RH.
Second, the measurement results are shown in fig. 8.
Thirdly, the conclusion is drawn,
through detection, the ultraviolet radiation intensity value of the outer surface of the air sterilizer vertical to 30cm is<1μW/cm2The leakage quantity of ultraviolet rays in the special requirement of an air purifier with the functions of antibiosis, degerming and purification of GB21551.3-2010 household and similar appliances of 4.1 hygienic safety is less than or equal to 5 mu W/cm2The requirements of (1).
Maintenance:
1) maintenance of the main machine (every 1-2 months): wiping with soft cloth dipped with soap water or common water;
2) and (3) maintenance of the air inlet grille (every 1-2 months): the dust is completely sucked by an air suction port of a dust collector and the like;
3) maintenance (every 3-6 months) of the filter assembly, the photocatalyst device, the ion generator and the like: it must be done under the direction of a professional.
And (3) fault checking and repairing:
as shown in FIG. 9, if a failure occurs during use, the inspection and repair can be performed as follows.
The application range is as follows:
1) the method is applicable to the following places: common operating rooms, intensive care units, burn wards, infection wards, sterile wards, common isolation rooms, emergency rooms, hemodialysis rooms, medicament rooms, obstetrics and gynecology department, infectious department, radiology department and scientific research laboratories of hospitals;
2) can also be widely applied to sterilization, disinfection and air purification (dynamic) in various rooms (new decoration environment, school, office, meeting room, hotel, family, convention and the like);
3) quickly remove (decompose) various toxic and harmful substances (formaldehyde, acetaldehyde, benzene, acetic acid, methyl mercaptan, ammonia, sulfur oxide, peculiar smell, musty smell, smoke smell, etc.) in indoor air.
Performance indexes are as follows:
1) power supply: AC-220V;
2) power: 93W, standby 4W;
3) the external dimension is as follows: width 617mm, height 510mm, longitudinal width 152 mm;
4) the installation mode is as follows: wall-mounted, mobile cabinet type and cabinet type;
5) the weight of the host machine is as follows: about 12 kg;
6) optimal area of use (about): 16.5m2~33m2(general life deodorization) (human);
7) control/operation: full-automatic, microprocessor control, remote controller operation;
8) timing function: 1. the timing function is turned off after 2, 4 and 8 hours;
9) maximum air volume of the exhaust fan: cross flow fan/3.3 m3Per minute;
10) air volume switching: automatic/manual (4 th gear);
11) the peculiar smell inductor: a low concentration gas sensor;
12) the purification mode is as follows: photocatalyst, a UV-A light source and a multifunctional filter;
13) number of ultraviolet lamps: 4 UV-A ultraviolet lamp tubes of 10W;
14) a negative ion generator: the inti-fion mode anion generating device can generate pure anion with high efficiency by using the < inti-fion > mode, and the generation of positive ion, ozone, NOx and electromagnetic wave is only trace;
15) amount of negative ions generated: more than 10000 per ml (measured at a distance of 1 meter from the exhaust port).
Equipment installation:
1. installation of the wall-mounted unit:
1) pulling the plastic buckle at the bottom of the machine slightly upwards, and taking down the installation bottom;
2) 2 phi 8 multiplied by 35mm holes are drilled in a wall surface with the lower end of the machine 1.8 to 2.0 meters away from the ground according to the positions of the mounting holes on the mounting plate, and randomly prepared phi 8 plastic expansion screws are screwed into the holes;
3) fixing the mounting bottom plate on the wall by using randomly-equipped M4 multiplied by 30mm self-changing screws;
4) the machine is hung and can be used after being plugged with a power supply;
2. the movable cabinet type and the cabinet type do not need to be installed, the machine is taken out, placed on the bracket and plugged with a power supply for use.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.