CN111336614A - Indoor air purification and disinfection system and purification and disinfection method thereof - Google Patents
Indoor air purification and disinfection system and purification and disinfection method thereof Download PDFInfo
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- CN111336614A CN111336614A CN202010242547.8A CN202010242547A CN111336614A CN 111336614 A CN111336614 A CN 111336614A CN 202010242547 A CN202010242547 A CN 202010242547A CN 111336614 A CN111336614 A CN 111336614A
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
The invention discloses an indoor air purification and disinfection system and a purification and disinfection method thereof, wherein the indoor air purification and disinfection system comprises an air outlet end and an air inlet end, wherein a negative ion generator is arranged in the air outlet end, and the air outlet end blows negative ions generated by the negative ion generator into a room through air outlet; be equipped with degassing unit in the air inlet end, degassing unit includes filter screen and disinfection subassembly, the filter screen is used for filtering the air in the air inlet end, the disinfection subassembly is used for right the filter screen carries out disinfection. The invention realizes sterilization and disinfection of the filter screen by optimizing the design and utilizing the characteristic of anion accumulation and combining ultraviolet rays, and realizes the characteristics of large ultraviolet dose, small light power, high efficiency and low cost.
Description
Technical Field
The invention relates to the technical field of air purification and disinfection equipment, in particular to an indoor air purification and disinfection system and a purification and disinfection method thereof.
Background
An air conditioner generally includes one or more cold and heat source systems for performing cooling or heating and one or more air conditioning systems for performing cold air exchange or hot air exchange. Air conditioners have become popular in today's society. The central air conditioning system is particularly suitable for various hospitals, markets, enterprises, office buildings or suites, the air conditioning system in the central air conditioning system recycles indoor air, but the central air conditioning system is provided with a ventilation port, but the ventilation volume is usually limited to about 30%, and 70% of indoor air is still recycled. Therefore, the pollution degree of indoor air is 2-5 times more serious than that of outdoor air, more than 80% of people spend indoors on average, and the quality of the indoor air is the key of the health of people.
How to eliminate germs and infectious viruses in indoor air and purify the indoor air; particularly, in the operating room, ward and other areas of the hospital, the operating room needs to continuously maintain a sterile environment because of more patients and relatively dense personnel, thereby being convenient for operation and treatment. In the space, germs are easy to grow, and the indoor air is not easy to purify. In order to realize the disinfection of air droplet bacteria, viruses and the like in operating rooms and sickrooms of hospitals, the air droplet bacteria and viruses meet the general sanitation requirement of WS/T648-2019 air disinfectors. The existing disinfection modes comprise medicine fumigation, steaming, liquid medicine spraying, ultraviolet lamp irradiation, anion purification and the like, but all have certain limitations. The medicine fumigation, steaming and liquid medicine spraying are all operated manually and repeatedly, the operation is complicated, the medicine usage amount is large, the use cost is high, and dead corners exist easily; the ultraviolet lamp irradiation and the negative ion purification have wide application in the field of disinfection and purification. However, the existing anion purification equipment or ultraviolet disinfection equipment usually adopts independent equipment to realize disinfection or purification. The existing independent disinfection and purification equipment also partially integrates an ultraviolet light disinfection function and an anion purification function, but the disinfection effect is realized by adopting ultraviolet light disinfection, the ultraviolet light disinfection function is usually only used for disinfection of circulating air, air circulation leads to short residence time of air in a disinfection cavity, so that the disinfection effect of the circulating air by the ultraviolet light is poor, certain high-standard requirements cannot be met, the power of the ultraviolet light is adjusted to be extremely high in time, the good disinfection and purification effect cannot be achieved, and the relevant requirements of disinfection technical specification (2002 edition) cannot be met.
Plasma purification and disinfection are commonly used in operating rooms or wards of hospitals, because the plasma purification and disinfection are combined into ozone by chemical reaction of O monatomic oxygen and O2 oxygen, which are separated from oxygen molecules in air by adopting electrons generated by high-voltage corona discharge, particularly doors and windows in areas such as wards and operating rooms are usually closed, plasma bodies are continuously operated and disinfected, and the ozone is difficult to decompose at normal temperature, so that the concentration of the indoor ozone is easy to exceed the standard; particularly, in an operating room, the plasma body disinfection technology is easy to cause the problem that particles flow to the abdominal cavity of a patient in operation, and large particle foreign matters or plasma body reactor electrode oxides are easy to fall into the abdominal cavity of the patient in operation along with airflow; due to foreign matters or poor contact of a high-voltage electrode, a large amount of high-amplitude sharp pulse waves are emitted by the plasma reactor to pollute the national power grid and operating room equipment, so that the electromagnetic compatibility (EMC) exceeds the standard; the plasma reactor is easy to detonate in flammable environments such as alcohol, gasoline and the like due to high-pressure ignition caused by foreign matters or poor contact of high-voltage electrodes, and has potential safety hazards.
Therefore, CN1310316A proposes a composite high-efficiency air purifier for central air conditioner, which uses a filter screen to filter for many times, and uses a negative ion generator to purify air, eliminate odor, and avoid air conditioning diseases. Although the air quality can be improved, the problems of poor air quality, multiplication of harmful bacteria and infectious viruses caused by a central air conditioner cannot be solved, negative ions can only reach aggregation and sedimentation generally, an effective sterilization effect cannot be realized, and the negative ion purification device is not suitable for the existing negative ion purification equipment in occasions such as hospitals and the like.
Disclosure of Invention
The invention aims to provide an indoor air purification and disinfection system and a purification and disinfection method thereof, which are used for solving the technical problems, and realize sterilization and disinfection by combining ultraviolet rays with microorganisms intercepted by a filter screen by utilizing the characteristic of negative ion aggregation, thereby realizing the disinfection characteristics of large ultraviolet dose, small light power, high efficiency and low cost.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
an indoor air purification and disinfection system comprises an air outlet end and an air inlet end, wherein a negative ion generator is arranged in the air outlet end, and negative ions generated by the negative ion generator are blown into a room through air outlet by the air outlet end; be equipped with degassing unit in the air inlet end, degassing unit includes filter screen and disinfection subassembly, the filter screen is used for filtering the air in the air inlet end, the disinfection subassembly is used for right the filter screen carries out disinfection.
Still include the casing, the casing is used for installing filter screen and disinfection subassembly are equipped with the ventilation cavity in the casing, casing one side be equipped with for with the filter screen mounting groove of filter screen cooperation installation, be equipped with a plurality of lamp plate installation cavity in the casing.
The disinfection subassembly includes at least one ultraviolet lamp plate, the ultraviolet lamp plate towards the filter screen shines.
The ultraviolet lamp plate includes aluminium base board, sets up power module and a plurality of LED ultraviolet lamp pearl of installing on aluminium base board.
The interval between the disinfection component and the filter screen is 5 mm-200 mm.
The irradiation angle of the LED ultraviolet lamp bead is 5-180 degrees.
The thickness of the filter screen is 5 mm-60 mm.
A purification and disinfection method of an indoor air purification and disinfection system comprises the following specific steps:
s1, starting the equipment, wherein the anion generator generates anions, the air outlet end finishes air outlet, and the air outlet end blows the anions generated by the anion generator into a room through the air outlet;
s2, mixing the air containing the negative ions with the indoor air to enable impurities in the indoor air to be gathered to form large-particle impurities;
s3, the air inlet end extracts indoor air with impurity aggregation, and large particle impurities are filtered through the filter screen;
s4, irradiating the filter screen by an ultraviolet lamp panel to finish ultraviolet disinfection treatment on large particle impurities blocked in the filter screen;
and S5, the filtered air flows to the air outlet to form circulation.
The circulating air quantity formed by the air inlet end and the air outlet end is 8 times or more of the indoor air volume.
The ultraviolet lamp panel irradiates the filter screen discontinuously or continuously.
Compared with the prior art, the invention has the following outstanding advantages and effects: the invention realizes sterilization and disinfection by optimizing design, utilizing the characteristic of anion accumulation and combining ultraviolet rays to microorganisms intercepted by the filter screen, and realizes the characteristics of large ultraviolet dose, small light power, high efficiency and low cost.
The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.
Drawings
FIG. 1 is a first schematic view of the disinfection apparatus of the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the disinfection apparatus of the present invention;
FIG. 3 is a schematic diagram of the structure of the ultraviolet lamp of the present invention;
FIG. 4 is a first schematic view of the disinfection apparatus and the air intake grille panel of the present invention;
FIG. 5 is a schematic view of a second embodiment of the disinfecting device and an air inlet grille of the present invention;
FIG. 6 is a third schematic view of the disinfection apparatus and the air intake grille panel of the present invention;
FIG. 7 is a third schematic view of the sterilization device of the present invention;
FIG. 8 is a fourth schematic view of the sterilization device of the present invention;
FIG. 9 is a fifth schematic view of the sterilization device of the present invention;
FIG. 10 is a first view of the overall mounting structure of the present invention;
FIG. 11 is a second schematic view of the overall mounting structure of the present invention;
FIG. 12 is a third schematic view of the overall mounting structure of the present invention;
FIG. 13 is a fourth schematic view of the overall mounting structure of the present invention;
FIG. 14 is a fifth schematic view of the overall mounting structure of the present invention;
wherein, 1, an air outlet end; 2. an air inlet end; 3. a negative ion generator; 4. a sterilizing device; 41. filtering with a screen; 42. a sterilizing assembly; 421. an ultraviolet lamp panel; 422. an aluminum substrate; 423. LED ultraviolet lamp beads; 424. a power supply module; 43. a housing; 431. a filter screen mounting groove; 432. a lamp panel mounting cavity; 433. a ventilation cavity; 5. an air conditioning system; 51. an air inlet grille plate; 6. a body; 61. a fan; 62. an air inlet grille.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Example 1
With reference to the attached drawings, the indoor air purification and disinfection system provided by the embodiment comprises an air outlet end 1 and an air inlet end 2, wherein a negative ion generator 3 is arranged in the air outlet end 1, and the air outlet end 1 blows negative ions generated by the negative ion generator 3 into the room through air outlet; be equipped with degassing unit 4 in the air inlet end 2, degassing unit 4 includes filter screen 41 and disinfection subassembly 42, and filter screen 41 is used for filtering the air in the air inlet end 2, and disinfection subassembly 42 is used for carrying out disinfection treatment to filter screen 41.
Wherein, air-out end 1 is used for blowing in the air to indoor, and air inlet end 2 is used for taking out the room air and forms the circulation in purifying and disinfecting system.
The sterilizing and disinfecting device comprises a shell 43, wherein the shell 43 is used for mounting a filter screen 41 and a sterilizing component 42, a ventilation cavity 433 is arranged in the shell 43, a filter screen mounting groove 431 used for being matched with the filter screen 41 is formed in one side of the shell 43, and a plurality of lamp panel mounting cavities 432 are formed in the shell 43; preferably, the filter screen 41 is an electrostatic electret filter screen.
Wherein, disinfection subassembly 42 includes at least one ultraviolet lamp plate 421, and ultraviolet lamp plate 421 faces filter screen 41 and shines.
Wherein, ultraviolet lamp plate 421 includes aluminium base board 422, sets up power module 424 and a plurality of LED ultraviolet lamp pearl 423 of installing on aluminium base board 422.
Wherein, the interval between the disinfection component 42 and the filter screen 41 is 5 mm-200 mm, and the preferred interval between the disinfection component 42 and the filter screen 41 is 10 mm-100 mm.
The irradiation angle of the LED ultraviolet lamp bead 423 is 5-180 degrees.
Wherein, the thickness of the filter screen 41 is preferably 5 mm-60 mm.
The embodiment realizes sterilization and disinfection by combining the ultraviolet rays to the filter screen through the optimized design and by utilizing the characteristic of anion aggregation, and realizes the disinfection characteristics of large ultraviolet dose, small luminous power, high efficiency and low cost.
Example 2
Based on embodiment 1, the embodiment discloses a purification and disinfection method of an indoor air purification and disinfection system with reference to the accompanying drawings, and the specific purification and disinfection method comprises the following steps:
s1, starting the equipment, wherein the anion generator 3 generates anions, the air outlet end 1 finishes air outlet, and the air outlet end 1 blows the anions generated by the anion generator 3 into a room through the air outlet;
s2, mixing the air containing the negative ions with the indoor air to enable impurities in the indoor air to be gathered to form large-particle impurities;
s3, the air inlet end 2 extracts indoor air with impurity gathering, and filtering of large-particle impurities is completed through the filter screen 41;
s4, irradiating the filter screen by the ultraviolet lamp panel 421 to finish ultraviolet disinfection treatment on large particle impurities blocked in the filter screen 41;
and S5, the filtered air flows to the air outlet end 1 to form circulation.
Wherein, the circulating air volume formed by the air inlet end 2 and the air outlet end 1 is 8 times or more of the indoor air volume.
Wherein, the ultraviolet lamp board 421 irradiates the filter screen intermittently or continuously.
Example 3
Based on embodiment 1 or embodiment 2, combine the figure, this embodiment provides a degassing unit who forms a complete set with air conditioner is integrated, including air conditioning system 5, air-out end 1 and air inlet end 2 install respectively in air conditioning system 5, and air-out end 1 cooperation is equipped with anion generator 3, and air inlet end 2 cooperation is equipped with degassing unit 4.
In this embodiment, the preferable air conditioning system 5 is an indoor air conditioning system in a central air conditioner in the prior art, and the negative ion generator 3 and the sterilizing device 4 are paired in the same group and are respectively used for being arranged in the air outlet end 1 and the air inlet end 2 in the same indoor space. Therefore, a plurality of sterilizing devices 4 and a plurality of anion generators 3 can be provided according to the customer's needs through the central air conditioning system.
The design characteristics of this embodiment can realize installing additional with current air conditioning equipment and integratedly supporting the use, utilize the circulated air system realization of air conditioner to the disinfection of indoor air, and anion generator and degassing unit make things convenient for quick assembly disassembly in air conditioner internal unit.
Preferably, in the present embodiment, the air outlet end 1 blows negative ions generated by the negative ion generator 3 into the room through air outlet, and the number of the negative ion generators 3 is at least one; the quantity of the negative ion generators 3 is matched and selected according to the size of the air outlet end or the size of the indoor space, the negative ion generators 3 are preferably miniature negative ion generators commonly used in the prior art, the negative ion generators 3 are preferably installed on the inner side of an air outlet grid in the air outlet end 1, the air outlet end in the existing air conditioning system 5 is usually provided with an interval between the air outlet grid and a machine opening, the negative ion generators 3 are preferably placed in the space, and the electrified connection setting is realized through wires.
Preferably, anion generator 3 is one in this embodiment, and anion generator 3 preferably is located air-out end middle part, adopts the structure that sets up between two parties, makes things convenient for 1 air-out realization of air-out end to the biggest diffusion of anion, is applicable to the less room of area generally and uses.
Preferably, anion generator 3 is two or more in this embodiment, and the interval is 1/10~1/2 of air-out end total length between two adjacent anion generator 3, according to the indoor space demand, can set up a plurality of anion generator 3, improves the anion total amount, is favorable to the air purification in big space and the gathering of material such as microparticle.
Preferably, the sterilization device 4 in this embodiment comprises a housing 43, a filter screen 41 and a sterilization assembly 42, wherein the sterilization assembly 42 is used for sterilizing the filter screen 41, and the filter screen 41 is used for filtering the air at the air inlet end 2; preferably, the filter screen 41 adopts an electrostatic electret filter screen, negative ions generated by the negative ion generator 3 are blown into the room through the air outlet end 1, so that substances such as bacteria, viruses and particles carried in indoor air are gathered and enlarged, the air inlet end 2 realizes circulating air inlet, particles gathered and enlarged in the air enter the air inlet end 2, and filtering is realized through the filter screen 41.
Preferably, the disinfecting assembly 42 in this embodiment includes at least one ultraviolet lamp panel 421, the disinfecting assembly 42 is configured to be installed in cooperation with the housing 43, and the ultraviolet lamp panel 421 faces the filter screen 41 for irradiation; the filter screen 41 preferably adopts an electrostatic electret filter screen, and the filter screen 41 adsorbs and intercepts negatively charged aggregate particles, so that bacteria, viruses, particles and the like in the air stay on the filter screen and irradiate towards the filter screen 41 through the ultraviolet lamp panel 421, thereby improving the ultraviolet disinfection dose, reducing the optical power energy consumption and reducing the cost.
Preferably, ultraviolet lamp plate 421 includes aluminium base board 422 in this embodiment, set up power module 424 and a plurality of reflow soldering LED ultraviolet lamp pearl 423 on aluminium base board 422, can dispose usually on aluminium base board 422 and be equipped with and be used for realizing radiating radiator, ultraviolet lamp plate 423 fixed mounting is in casing 43, be equipped with in the casing 43 and be used for the lamp plate installation cavity 432 with ultraviolet lamp plate 421 fixed mounting, LED ultraviolet lamp pearl 423 realizes ultraviolet lamp light irradiation towards filter screen 41, LED ultraviolet lamp pearl 423 has small, long service life, the energy consumption is low, light wave purity is high, emission distance is short, the characteristics of no leakage.
Preferably, in this embodiment, the filter screen 41 is installed on one side surface of the casing 43, a filter screen installation groove 431 for being installed in cooperation with the filter screen 41 is formed in the casing 43, and the other side surface of the casing 43 is used for being installed in cooperation with the style grid plate 51; the shell 43 is preferably provided with a fastening part or a clamping groove part for fixedly mounting the air inlet grating plate 41, so that the combination and fixation can be conveniently completed.
Preferably, in this embodiment, a ventilation cavity 433 is provided in the housing 43 to facilitate air intake.
Preferably, in the embodiment, the thickness of the filter screen 41 is preferably 5mm to 200mm, and the thickness is preferably 5mm to 60 mm.
Preferably, in the embodiment, the interval between the disinfection component 42 and the filter screen 41 is 5mm to 200mm, and the preferred setting interval is 10mm to 100mm, so that the maximum ultraviolet light irradiation disinfection of the ultraviolet light in the disinfection component 42 on the filter screen 41 is conveniently realized; the optimal illumination angle of the single LED ultraviolet lamp bead 423 is 5-150 degrees, the distance between the LED ultraviolet lamp beads 423 and the filter screen 41 are preferably arranged, and illumination disinfection of the largest area is achieved.
The working principle in this embodiment is as follows: the circulation of indoor air is realized by utilizing an air conditioning system in the existing air conditioner, and the negative ions are generated by utilizing the negative ion generator arranged at the air outlet end, so that the negative ions are brought into the indoor air along with the air outlet of the air outlet end, and the particles, germs and the like in the indoor air can be gathered; because different indoor bacteria, viruses and the like need a certain time for participating in ultraviolet disinfection reaction, namely, the dose = intensity μ w/cm x s time, because the air circulation fluid has high speed (> 1 m/s), even if a high-intensity ultraviolet lamp tube is adopted, instant disinfection and killing cannot be met, bacteria, viruses and the like can be intercepted and stopped, and only the bacteria, the viruses and the like can be efficiently killed, the air is sucked into the room for circulation by combining an air inlet end, the gathered and enlarged particles and pathogen aggregates are adsorbed by the filter screen, so that the isolated air enters the circulation, the ultraviolet lamp panel in the disinfection component is combined to realize ultraviolet lamp light irradiation disinfection on the filter screen, and the ultraviolet lamp panel performs long-time ultraviolet lamp light irradiation disinfection on the filter screen, so that a good disinfection effect can be realized; moreover, the components are convenient to disassemble and assemble, the later maintenance, the replacement and the maintenance are convenient, and the cost is relatively low.
The air conditioner is convenient to be matched with the existing air conditioner for use through the optimized design, is particularly suitable for a central air conditioner, is convenient for fast assembly and fast disassembly of each part, and is beneficial to later maintenance, replacement and repair; the air purification and disinfection mode of the circulating air is optimized, negative ions are utilized to realize aggregation of particles, germs and the like to form particles, the particles circularly enter the disinfection device along with airflow to realize interception, sterilization and disinfection, and the double disinfection characteristics of large ultraviolet dose, small light power, high efficiency and low cost of air and a filter screen are realized.
In the technical scheme disclosed in the embodiment, the following contents are obtained by one party through detection:
the detection basis is as follows: 2.1.3 air disinfection effect identification test of the department of health, disinfection technical Specification (2002 edition).
Detecting items: and (4) performing an air sterilization field test on a sterilization instrument.
The detection method comprises the following steps: 1. installing the equipment to be detected into a test space, closing a door and a window, and sampling by using a six-level sieve mesh air impact type microorganism sampler for 0min to obtain a sample before test (the number of control bacteria before disinfection); 2. starting the device, closing the device after running for 120min, sampling by using a six-level sieve pore air impact type microorganism sampler, and obtaining a sample after the test (the number of bacteria remained after disinfection); 3. during sampling, the six-level sieve pore air impact type microorganism sampler is arranged at the height of 1m 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 culture (24-48) h, and counting the number of bacteria; 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 a negative control group; 6. during the test, the environmental temperature is 25-30 ℃ and the environmental humidity is 50-60% RH, the test is repeated for 3 times, and the death rate of each time is calculated.
The detection embodiment comprises the following steps: the method comprises three groups of tests, wherein each group of tests collects test results for 3 times, and the three groups of tests comprise a group with the lowest ultraviolet lamp panel power, a group with the standard ultraviolet lamp panel power and a group with the highest ultraviolet lamp panel power.
And (3) detection results: EXAMPLES A sample was tested at 100m3The machine is started up and disinfected in the closed space for 120min, the test results of the machine on the natural bacteria in the air are all more than or equal to 90 percent, the test requirements of the field test in the disinfection technical Specification (2002 edition) 2.1.3 are met, and the machine is qualified for disinfection.
TABLE 1 test data for the lowest UV power group
| Test number | Time of action | Number of control bacteria (cfu/m) before Disinfection3） | Number of bacteria remaining after Disinfection (cfu/m)3） | Mortality rate Kt (%) |
| 1 | 120min | 1.45*104 | 1.41*103 | 90.28 |
| 2 | 120min | 2.08*104 | 1.87*103 | 91.01 |
| 3 | 120min | 1.21*104 | 1.19*103 | 90.17 |
Table 2 uv power standard set of test data
| Test number | Time of action | Number of control bacteria (cfu/m) before Disinfection3） | Number of bacteria remaining after Disinfection (cfu/m)3） | Mortality rate Kt (%) |
| 1 | 120min | 1.48*104 | 0.95*103 | 93.58 |
| 2 | 120min | 1.97*104 | 1.25*103 | 93.65 |
| 3 | 120min | 1.58*104 | 1.00*103 | 93.67 |
TABLE 3 highest UV power set of test data
| Test number | Time of action | Number of control bacteria (cfu/m) before Disinfection3） | Number of bacteria remaining after Disinfection (cfu/m)3） | Mortality rate Kt (%) |
| 1 | 120min | 2.05*104 | 0.98*103 | 95.22 |
| 2 | 120min | 1.77*104 | 0.87*103 | 95.08 |
| 3 | 120min | 1.36*104 | 0.66*103 | 95.15 |
Among them, the negative control group was aseptically grown.
Wherein, the extinction rate Kt (%) = (V0-Vt) × 100/V0, V0 is the number of control bacteria before disinfection, and Vt is the number of residual bacteria after disinfection.
Example 4
Based on embodiment 1 or embodiment 2, with reference to the accompanying drawings, this embodiment also discloses an indoor air purification and disinfection machine, which includes a machine body 6, the machine body 6 is provided with an air outlet end 1 and an air inlet end 2, air circulation is realized by using a built-in fan 61, an anion generator 3 is arranged in the air outlet end 6, and the air outlet end 1 is used for blowing anions generated by the anion generator 3 into a room; the air inlet end 2 is internally provided with a filter screen 41 and a disinfection component 42, the air inlet end 2 is generally provided with an air inlet grille 62, the air inlet end 2 is used for sucking indoor air and completing filtration through the filter screen 41, and the disinfection component 42 is used for disinfecting the filter screen 41.
Preferably, in the present embodiment, the air outlet end 1 blows negative ions generated by the negative ion generator 3 into the room through air outlet, and the number of the negative ion generators 3 is at least one; the quantity of the negative ion generators 3 is matched and selected according to the size of an indoor space or the specification and the size of a product, the negative ion generators 3 are preferably miniature negative ion generators commonly used in the prior art, and the installation positions of the negative ion generators 3 at the air outlet end 1 are arranged and adjusted at intervals according to the specification and the size of an air outlet grille and an air outlet; according to the indoor space requirement, a plurality of negative ion generators 3 can be arranged, the total quantity of negative ions is improved, and the air purification and the aggregation of substances such as micro particles in a large space are facilitated.
The present embodiment preferably further comprises a sterilizing assembly 42, a filter screen 41 and a housing 43 for mounting the sterilizing assembly 42 and the filter screen 41; the disinfection component 42 comprises at least one ultraviolet lamp panel 421, the ultraviolet lamp panel 421 irradiates towards the filter screen 41, the filter screen 41 is preferably an electrostatic electret filter screen, the filter screen 41 is used for filtering air at the air inlet end 2, negative ions generated by the negative ion generator 3 are blown into the room through the air outlet end 1, so that substances such as bacteria, viruses and particles carried in the indoor air are gathered and enlarged, the air inlet end realizes circulating air inlet, the gathered and enlarged particles in the air enter the air inlet end, and the filter screen 41 is used for filtering, so that the requirements of the grade of the filter screen and the specification of the fan can be reduced, and the characteristics of lower filter screen resistance, lower motor electric power, lower operation cost and lower noise are realized; in addition, the ultraviolet lamp panel 421 irradiates towards the filter screen 41 to realize sterilization and disinfection treatment of the filter screen 41, the filter screen 41 adsorbs and intercepts negatively charged aggregate particles, so that bacteria, viruses, particles and the like in the air stay on the filter screen, and the ultraviolet lamp panel 421 irradiates towards the filter screen 41, thereby improving the ultraviolet disinfection dose, reducing the light power energy consumption and reducing the cost.
Preferably, ultraviolet lamp plate 421 includes aluminium base board 422 in this embodiment, set up power module 424 and a plurality of on aluminium base board 422 and install LED ultraviolet lamp pearl 423 on aluminium base board 422, LED ultraviolet lamp pearl 423 passes through reflow soldering on aluminium base board 422, can dispose on aluminium base board 422 in addition and be equipped with usually and be used for realizing radiating radiator, ultraviolet lamp plate 421 fixed mounting is in casing 43, LED ultraviolet lamp pearl 423 realizes ultraviolet lamp light irradiation towards the filter screen, LED ultraviolet lamp pearl 423 has small, long service life, the energy consumption is low, the light wave purity is high, the transmission distance is short, the characteristics of no leakage.
Preferably, be equipped with a plurality of lamp plate installation cavity 432 in the casing 43 in this embodiment, lamp plate installation cavity 432 is used for the cooperation installation in ultraviolet lamp plate 421, and wherein filter screen 41 is located casing 43 inside part usually, and is the both sides distribution with the air inlet grid 62 of air inlet end 2 usually.
Preferably, a plurality of lamp plate installation cavity 432 are arranged at interval array in this embodiment, increase ultraviolet lamp plate 421 and shine the area, improve disinfection effect.
Preferably, in this embodiment, a ventilation cavity 433 is provided in the housing 43 to facilitate air intake.
Preferably, the thickness of the filter screen 41 in this embodiment is 5mm to 200mm, and preferably 5mm to 60 mm.
Preferably, in the embodiment, the distance between the disinfection component 42 and the filter screen 41 is 5 mm-200 mm, and preferably 10 mm-100 mm, so that the maximum ultraviolet light irradiation disinfection of the ultraviolet light in the disinfection component on the filter screen is conveniently realized; the optimal illumination angle of the single LED ultraviolet lamp bead is 5-180 degrees, the interval between the LED ultraviolet lamp beads and the filter screen are preferably arranged, and illumination disinfection of the largest area is achieved.
The working principle in this embodiment is as follows: the air outlet end and the air inlet end are utilized to realize indoor air circulation, and the negative ion generator arranged at the air outlet end is utilized to generate negative ions, so that the negative ions are brought into the indoor air along with the air outlet of the air outlet end, and particles, germs and the like in the indoor air can be gathered; because indoor different bacteria, viruses and the like need a certain time for participating in ultraviolet disinfection reaction, namely dose = intensity μ w/cm s time, because the air circulation fluid speed is high (> 1 m/s), even if a high-intensity ultraviolet lamp tube is adopted, instant disinfection and killing cannot be met, bacteria, viruses and the like can be intercepted and stopped, and only the bacteria, the viruses and the like can be efficiently killed, the indoor air is sucked into an air inlet end for circulation, the gathered and enlarged particles and pathogen aggregates are adsorbed through the filter screen, so that the isolated air enters into circulation, the ultraviolet lamp panel in the disinfection component is combined to realize ultraviolet lamp light irradiation disinfection on the filter screen, and the ultraviolet lamp panel performs long-time ultraviolet lamp light irradiation disinfection on the filter screen, so that a good disinfection effect can be realized.
In the technical scheme disclosed in the embodiment, the following contents are obtained by one party through detection:
the detection basis is as follows: 2.1.3 air disinfection effect identification test of the department of health, disinfection technical Specification (2002 edition).
Detecting items: and (4) performing an air sterilization field test on a sterilization instrument.
The detection method comprises the following steps: 1. installing the equipment to be detected into a test space, closing a door and a window, and sampling by using a six-level sieve mesh air impact type microorganism sampler for 0min to obtain a sample before test (the number of control bacteria before disinfection); 2. starting the device, closing the device after running for 120min, sampling by using a six-level sieve pore air impact type microorganism sampler, and obtaining a sample after the test (the number of bacteria remained after disinfection); 3. during sampling, the six-level sieve pore air impact type microorganism sampler is arranged at the height of 1m 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 culture (24-48) h, and counting the number of bacteria; 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 a negative control group; 6. during the test, the environmental temperature is 25-30 ℃ and the environmental humidity is 50-60% RH, the test is repeated for 3 times, and the death rate of each time is calculated.
The detection embodiment comprises the following steps: the method comprises three groups of tests, wherein each group of tests collects test results for 3 times, and the three groups of tests comprise a group with the lowest ultraviolet lamp panel power, a group with the standard ultraviolet lamp panel power and a group with the highest ultraviolet lamp panel power.
And (3) detection results: EXAMPLES A sample was tested at 100m3The machine is started up and disinfected in the closed space for 120min, the test results of the machine on the natural bacteria in the air are all more than or equal to 90 percent, the test requirements of the field test in the disinfection technical Specification (2002 edition) 2.1.3 are met, and the machine is qualified for disinfection.
TABLE 4 experimental data for the lowest UV power group
| Test number | Time of action | Number of control bacteria (cfu/m) before Disinfection3） | Number of bacteria remaining after Disinfection (cfu/m)3） | Mortality rate Kt (%) |
| 1 | 120min | 1.56*104 | 1.41*103 | 90.96 |
| 2 | 120min | 2.01*104 | 1.82*103 | 90.94 |
| 3 | 120min | 1.33*104 | 1.15*103 | 91.35 |
TABLE 5 UV Power Standard group test data
| Test number | Time of action | Number of control bacteria (cfu/m) before Disinfection3） | Number of bacteria remaining after Disinfection (cfu/m)3） | Mortality rate Kt (%) |
| 1 | 120min | 1.64*104 | 1.18*103 | 92.80 |
| 2 | 120min | 1.88*104 | 1.28*103 | 93.19 |
| 3 | 120min | 1.56*104 | 1.05*103 | 93.27 |
TABLE 6 highest set of UV power test data
| Test number | Time of action | Number of control bacteria (cfu/m) before Disinfection3） | Number of bacteria remaining after Disinfection (cfu/m)3） | Mortality rate Kt (%) |
| 1 | 120min | 1.96*104 | 1.02*103 | 94.80 |
| 2 | 120min | 1.89*104 | 0.95*103 | 94.97 |
| 3 | 120min | 1.53*104 | 0.78*103 | 94.90 |
Among them, the negative control group was aseptically grown.
Wherein, the extinction rate Kt (%) = (V0-Vt) × 100/V0, V0 is the number of control bacteria before disinfection, and Vt is the number of residual bacteria after disinfection.
According to the embodiment, a circulating air purification and disinfection mode is optimized, particles, germs and the like are gathered to form particles by utilizing negative ions, the particles enter the disinfection device along with air flow circulation to achieve interception, sterilization and disinfection, and double disinfection of air and a filter screen with large ultraviolet dose, small light power, high efficiency and low cost is achieved.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. The utility model provides an indoor air purification disinfection system, includes air-out end (1) and air inlet end (2), its characterized in that: the air outlet end (1) is internally provided with a negative ion generator (3), and the air outlet end (1) blows negative ions generated by the negative ion generator (3) into a room through air outlet; be equipped with degassing unit (4) in air inlet end (2), degassing unit (4) include filter screen (41) and disinfection subassembly (42), filter screen (41) are used for filtering the air in air inlet end (2), disinfection subassembly (42) are used for right filter screen (41) carry out disinfection treatment.
2. An indoor air purification and disinfection system as claimed in claim 1, wherein: still include casing (43), casing (43) are used for the installation filter screen (41) and disinfection subassembly (42) are equipped with ventilation cavity (433) in casing (43), casing (43) one side be equipped with be used for with filter screen mounting groove (431) of filter screen (41) cooperation installation, be equipped with a plurality of lamp plate installation cavity (432) in casing (43).
3. An indoor air purification and disinfection system as claimed in claim 1, wherein: the disinfection subassembly (42) include at least one ultraviolet lamp plate (421), ultraviolet lamp plate (421) towards filter screen (41) shine.
4. An indoor air purification and disinfection system as claimed in claim 1, wherein: ultraviolet lamp plate (421) include aluminium base board (422), set up power module (424) and a plurality of on aluminium base board (422) and install LED ultraviolet lamp pearl (423) on aluminium base board (422).
5. An indoor air purification and disinfection system as claimed in claim 1, wherein: the interval between the disinfection component (42) and the filter screen (41) is 5 mm-200 mm.
6. An indoor air purification and disinfection system as claimed in claim 4, wherein: the irradiation angle of the LED ultraviolet lamp bead (423) is 5-180 degrees.
7. An indoor air purification and disinfection system as claimed in claim 1, wherein: the thickness of the filter screen (41) is 5 mm-60 mm.
8. A purification and disinfection method of an indoor air purification and disinfection system is characterized in that: the specific purification and disinfection method comprises the following steps:
s1, starting equipment, enabling the anion generator (3) to generate anions, enabling the air outlet end (1) to finish air outlet, and enabling the air outlet end (1) to blow the anions generated by the anion generator (3) into a room through air outlet;
s2, mixing the air containing the negative ions with the indoor air to enable impurities in the indoor air to be gathered to form large-particle impurities;
s3, the air inlet end (2) extracts indoor air with impurity aggregation, and large particle impurities are filtered through the filter screen (41);
s4, irradiating the filter screen (41) by an ultraviolet lamp panel (421) to finish ultraviolet disinfection treatment on large particle impurities blocked in the filter screen (41);
and S5, the filtered air flows to the air outlet end (1) to form circulation.
9. The purifying and sterilizing method of indoor air purifying and sterilizing system as claimed in claim 8, wherein: the circulating air quantity formed by the air inlet end (2) and the air outlet end (1) is 8 times or more of the indoor air volume.
10. A method for purifying and disinfecting an indoor air purifying and disinfecting system as claimed in claim 8 or 9, wherein: the ultraviolet lamp panel (421) irradiates the filter screen discontinuously or continuously.
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