CN1893983A - Air processing method and device therefor - Google Patents
Air processing method and device therefor Download PDFInfo
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- CN1893983A CN1893983A CNA2004800330256A CN200480033025A CN1893983A CN 1893983 A CN1893983 A CN 1893983A CN A2004800330256 A CNA2004800330256 A CN A2004800330256A CN 200480033025 A CN200480033025 A CN 200480033025A CN 1893983 A CN1893983 A CN 1893983A
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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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
In order to improve the air quality in bounded spaces such as a room, an air treatment device and an air treatment method are disclosed. The air treatment device comprises a fan (16) for stimulating airflow through the air treatment device and an UV treatment chamber (20). An UV radiation source (11) radiates UV radiation in the UV treatment chamber to kill microorganisms in said airflow. The air treatment device is designed such that a high airflow may be generated, while all microorganisms present in the air flowing through the air treatment device are killed. With the high airflow and air cleaning capacity, the air treatment device may clean a bounded space in a short period of time.
Description
Technical field
The invention relates to a kind of air-treatment method and the air processor that are used for killing the microorganism that exists at air.
Background technology
In the restricted quarter such as room, house, building or other mankind or animal living environment, exist such as dust and resemble the countless pollutant of the microorganism virus, antibacterial and the fungus.These pollutant threaten the mankind that live in these restricted quarters or the health of animal.
The air processor that is used for improving in the air quality of the restricted quarter is known (for example being derived from the air processor of US 5185015).Known air processor comprises three filters.First filter is the big microgranule of specific filtration resistance preliminary dimension from air, and second filter filters microgranule and the 3rd filter with selected chemical substance and eliminates the fertility that relies on airborne antibacterial by the emission ultraviolet light.
Yet known air processor has a limited air cleaner ability and has a limited airflow capacity.Use in a cubicle that keeps closing in long-time section if having the air processor of little airflow capacity, it is only effectively.The air (for example when open door or during window) that is exposed to normal pollution in the room afterwards, the room is contaminated once more and in order to purify, the room is had to close once more and spend distance and is come air in the clean rooms.
In addition, known air processor is only applicable to eliminate airborne huge relatively microorganism.Known air processor is used to eliminate the conventional filtration device of the microgranule with diameter bigger than predetermined filtration diameter.Thereby the microorganism that has than minor diameter may and remain in the air by filter.
Only under the situation of eliminating all antibacterials and other microorganism such as virus fully, the airflow capacity that increases air processor is only possible.If the dosage of the ultraviolet light that uses can not kill microorganisms, microorganism is morphed so, and this is because microorganism only just can be killed after the ultraviolet light that receives given dose.Because the variation microorganism is compared possibility even the human and animal is formed bigger threat with unmanifest microorganism, so the ultraviolet light that microorganism needs to receive minimum given dose at least is killed to guarantee microorganism.Therefore, need design and configuration high power capacity air processor to guarantee all microorganisms and be killed and not have the variation microorganism and leave air processor.
Summary of the invention
Target of the present invention provides a kind of air processor that kills small microorganism that is applicable to.
Above-mentioned target realizes that in air processor it comprises:
-shell, it comprises air intake and air outlet slit;
-fan, it is used to promote from the air intake to the air outlet slit and air flow by shell; With
-at the UV process chamber with respect to the air intake downstream, described UV processing filters comprises that at least one is used for described air flow is exposed to the radiating UV radiation source of UV that is used to kill the microorganism that exists at described air flow.
In order to kill described microorganism rather than to use one or more conventional filtration devices to remove microorganism, the microbial exposure that air processor according to the present invention is configured to exist in air flow is in the UV radiation.Thereby air processor is applicable to the microorganism of killing virtually any size rather than only removes to have the microorganism of filtering the big size of diameter than predetermined.
Description of drawings
Illustrate in greater detail by reference explanation one exemplary embodiment accompanying drawing according to the situation of device of the present invention, favourable part and characteristics, wherein:
Fig. 1 schematically shows the structure according to air processor of the present invention;
Fig. 2 A shows the perspective view of air processor according to an embodiment of the invention;
Fig. 2 B is illustrated in the cutaway view of the embodiment that illustrates among Fig. 2 A;
Fig. 2 C is to the part of 2E with the cutaway view of enlarged drawing exploded view 2B;
Fig. 3 is shown as the function relation figure that pollutant are eliminated coefficient and pollutant size; With
Fig. 4 is shown as the function relation figure of UV radiation source efficient cooling air velocity.
In different figure, similar reference number is indicated like or is had the parts of identical function.
The specific embodiment
Big microorganism needs heavy dose of UV radiation so that it is killed, yet little microorganism only needs less relatively dosage.Therefore, air processor can be included at least one filter with respect to UV process chamber upstream, it was used for before described air flow is exposed to described UV radiation, removed the microgranule and the microorganism of filtering the big size of diameter than predetermined that have in described air flow.Thereby only little microorganism arrives the UV process chamber.Described little microorganism can be by the UV radiation destroys of low dose, thereby needs less UV radiation to kill all microorganisms.
In the UV process chamber, the air in the air flow and especially airborne each microorganism are by the UV radiation irradiation.Each microorganism receives the UV radiation of above-mentioned minimum dose and is killed.This means that each microorganism receives the UV radiation of certain power in the specific period.In addition, configuration UV process chamber is so that air remains in the UV process chamber and the predetermined UV power of at least one UV radiation source emission in the predetermined minimum period.
Suitable UV radiation source emission has the UV radiation that is about 253 to 257nm wavelength (wavelength that especially has 253.7nm).
In order to purify a large amount of air in the unit interval, all elements in air processor (especially filter) may complementaryly be selected and the location each other.In one embodiment, can comprise a dust filter and a HEPA filter according to air processor of the present invention.Dust filter removes all the big microgranules such as dust particle from the air flow by shell.Preferred dust filter for movably and/or filter capable of washing with cleaning and filtering easily with make dust filter have long service life.
Can not can remove by HEPA (high efficiency particle is caught) filter by the less microgranule that dust filter removes.The HEPA filter is for known in order to remove the filter of small particle in this technology.A series of HEPA filters are known, the filter in described series remove by described filter greater than difference aspect the percent of 0.3 micron microgranule.
In an embodiment according to the present invention, preferred use build by glass fibre and remove about 99.97% HEPA filter greater than 0.3 microparticles.This class HEPA filter is known as the H13HEPA filter and approximately removes all dust particles and also remove airborne big antibacterial from air.
Replace dust filter and/or HEPA filter, other any filter is applicable to removing the pollutant with size bigger than preliminary dimension.For example, can use active carbon filter.
As mentioned above, the removable airborne big antibacterial of filter (for example HEPA filter).Thereby these big antibacterials rest in the filter.Because filter plays the function in greenhouse, can cause making a variation the growth of big antibacterial of antibacterial so can expect in filter, to exist.In addition, because air and microgranule flow through filter, As time goes on filter is worn.Therefore, As time goes on, big microgranule and especially bigger antibacterial (or even the person that is not hunted down in early days in filter) may flow through the HEPA filter.For fear of these influences, filter UV radiation source emission UV radiation on the filter to kill the antibacterial that rests on the filter.Suitable filter UV radiation source emission has the UV radiation that is about 253 to 257nm wavelength (wavelength that especially has 253.7nm).
Thereby, by killing the antibacterial that catches by filter, As time goes on may not have antibacterial (in the retention period of antibacterial on filter, it may be bred in a large number and/or may make a variation) and flow through filter.In addition, filter can not have the rough sledding that taking-up has the old filter of the antibacterial that may make a variation in a large number in the above by new filter replacement safely once wearing and tearing.
For killing bacteria, antibacterial need receive the UV radiation of specific minimum dose.The radiating dosage of UV that receives equals UV power and multiply by the time of bacterial exposure in described UV power.Thereby, use high power UV radiation source, antibacterial only need expose in short time interval and be killed.Yet the antibacterial that catches on filter can not be moved.Therefore, the UV radiation source of filter may be low-power UV radiation source, and this is because antibacterial may expose in long duration, and finally causes receiving the minimum dose of requirement and be killed.
Receive UV radiation and do not have microorganism and can under the concealment of other microorganism, pass through at least one UV radiation source in order to ensure all microorganisms in the UV process chamber, fan can be positioned in the air processor so that the air flow in the UV process chamber is turbulent.Because the air flow that is promoted by fan is turbulent in pressurization one side of fan always, this means that fan may be positioned the upstream with respect to the UV process chamber.In the side that air is drawn, air flow may be lamellated with respect to low air flow speed.Yet, should note for upper air current speed, draw a side flow be turbulent and thereby in device according to the present invention, when only using upper air current speed, fan also may be positioned the downstream of UV process chamber.
The inwall of UV process chamber may have UV radiation reflecting layer.UV radiation by the emission of UV radiation source can thereby more effectively be used to shine microorganism.For the first time do not disturb the UV radiation of microorganism after it is by the reflective layer reflects on the UV radiation chamber inwall, may disturb other microorganism by the UV process chamber.
Have been found that the aluminum metal lattice is particularly suitable for building described reflecting layer.The radiating wavelength of UV that uses is by aluminum partial reflection at least.
For use from might direction the UV radiation fill the UV process chamber and thereby increase the chance of disturbing the microorganism of passing through, when the UV radiation is reflected, be favourable with its scattering.Therefore, it is favourable that the reflecting layer has rough surface, so that the UV radiation of reflection is scattered.In a particular embodiment, the reflecting layer forms by sputtering aluminum, and this is because reflection of the sputtered layer of this eka-aluminum and the incident UV radiation of scattering.
In an advantageous embodiment, air processor further is included in the cooling unit that is used to cool off and/or make the air flow dehydration with respect to the upstream of UV process chamber.
The cooling unit that may receive the air that only comprises the small particle that is mainly antibacterial, virus, fungus and other microorganism has two functions.Cooling unit cooling air also makes air dehydration.Air is through cooling off to provide the air with optimum temperature to the UV processing filters.Best temperature will be described below.
Air dehydration is become attached in the microorganism in order to prevent hydrone, and this is because the hydrone that adheres to forms the radiating protection of anti-UV around microorganism.Have been found that in order to have the microorganism of hydrone protection around killing, may need to use the UV radiation of height to four times higher dosage.Make air dehydration cause less protection and thereby in the UV processing filters, cause the less UV radiation of needs with killing bacteria.
Dehydration forms by making air cooling.Compare with hot-air, cold air can contain less hydrone.The cooling air causes the airborne water of appearing at of certain percentage to condense.Agglomerative water can be stored in the water tank, and when water tank is full of, it will be turned by the people.Equally, agglomerative water can directly be discharged from.In a particular embodiment, agglomerative water is vaporized in air flow after microorganism is killed once more to prevent exporting non-natural dry air by air processor.
In an advantageous embodiments, air processor be included in respect to described at least one filter (if exist) the upstream and with respect to the ion generator in the downstream of described cooling unit (if existence), it is used to provide the electron stream that is substantially perpendicular to airflow direction.
Ion generator produces electric field.A function of ion generator is by the electron stream generation that runs to another electrode inevitably from an electrode of ion generator.Microorganism can and be killed or weaken by one or more electron collisions.If ion generator is positioned at the downstream with respect to the UV process chamber, any microorganism of in the UV processing filters, surviving so unintentionally, may make a variation being subjected to electron bombardment and being killed in described electric current.For big electron stream is provided, the electrode of ion generator can be designed to have the electrode on big surface.For example, the electrode metal plug that may be built as conducting electricity.
Ion generator can further have makes the air that the passes through function of hydration again.Owing to produce electric field between two electrodes of ion generator, hydrone is polarized, and promptly all hydrones self are oriented to identical direction.This is a well-known influence for one of ordinary skill in the art.Owing to polarize, becoming at hydrone is attached to airborne molecule easily, thereby air water is combined into the nature hydration level.
In an embodiment according to device of the present invention, air processor further is included in second active carbon filter with respect to the filter downstream.Known active carbon filter is used for catching gas and thereby reduces the abnormal smells from the patient that exists at air flow in affiliated technical field.
In another embodiment, cooling unit and active carbon filter can be combined in the filter.Described combined filtering device can be caught liquid (particularly water) and gas by polarization and cooling air.Be contained in the electromotive force of the electrode in the combining unit by controlling packet, may command is by the humidity and the temperature of the air of combined filtering device.
Thereby also control the water yield that adheres in the microorganism for controlled humidity, air processor can be included in the humidity sensor with respect to the cooling unit downstream, and it is determined the humidity of air and exports corresponding humidity data.Humidity data is received from humidity sensor by a blood processor, and described blood processor control cooling unit is to provide predetermined humidity in the UV process chamber.Thereby, do not consider to enter the humidity of the air of air processor from air intake, the humidity of the air in the UV process chamber can remain on the level of predetermined moisture.Preferred humidity sensor is set in the UV process chamber directly to obtain the humidity level in the UV process chamber.
Similarly, in order to control temperature, air processor can be included in the temperature sensor with respect to the cooling unit downstream, and it is measured the temperature of air and exports corresponding temperature data.Temperature data is received from temperature sensor by blood processor, and described blood processor control cooling unit is to provide predetermined temperature in the UV of UV processing filters process chamber.Thereby as long as the temperature that enters the air of air processor from air intake is higher than predetermined temperature, the temperature of the air in the UV process chamber can remain on the level of predetermined temperature.
In an embodiment of air processor, first temperature sensor is set directly at the downstream of UV process chamber.The temperature of leaving the air of UV process chamber is used for weighing the UV amount of radiation of radiation in microorganism.Thereby, by measuring and the temperature of control delivery air, can guarantee that microorganism has received enough UV radiation and is killed.
In one embodiment, at least one UV radiation source can have second temperature sensor and a blood processor and receives temperature data from described second temperature sensor.Blood processor serves as that the output of basic control UV radiation source can be not supercool or overheated with protection UV radiation source with the temperature data that receives.The temperature of the air of UV process chamber may change and owing to the air flow speed that enters the UV radiation chamber may change, so the 2nd UV radiation source takes place in the problem that run duration has generation or heat-shift, this problem can cause supercool or overheated owing to flow to.Supercool or overheated by measuring the UV radiation source temperature and serve as that the output that the UV radiation source is regulated on the basis prevents with described definite temperature.
Advantageously, the first and/or the 2nd UV radiation source be set at for the emission the UV radiation be in the cover of transmissive.If the UV radiation source breaks, cover protection people is not subjected to the injury of harmful chemical compound of existing in the UV radiation source so.In addition, but this class cover special protection UV radiation source is not subjected to rapid refrigerative influence that caused by the cold air that enters air processor.This is particularly advantageous, because enter the air-treatment ability that the cold air of UV process chamber influences the UV process chamber nocuously.Suitable cover is made by politef, this be because politef for the UV radiation of using be transmissive and As time goes on, politef can not degraded because of light.
Should note for light being that the cover of transmissive also can be advantageously be used in combination with other any light source (for example Down lamp (TL) and gas-discharge lamp) that comprises harmful chemical compound so that just in case break under the situation of light source and hold described chemical compound by light emitted.Equally, with during the lamp of being built by glass is used in combination, the cover that can use transmissive with at lamp just in case hold damaged glass fragment under the situation about breaking.
Because the UV radiation of using is pernicious to people, the air intake of the shell of air processor and air outlet slit can be through building so that the UV radiation can not be escaped from shell.One of ordinary skill in the art understand this class formation easily and can how to design.For example, can use the structure in similar labyrinth.In addition, can provide the UV radiation absorption layer at the inwall of shell or the part of inwall.
According to air processor of the present invention can be in medical treatment, dwelling house, commercialization, industry and army and animal feeding be used as standalone unit or further the part of air conditioning system use.
On the other hand, the invention provides a kind of air-treatment method, it comprises that generation air flow and emission UV radiation are to be exposed to described air flow described UV radiation to kill the microorganism that exists in described air flow.
The specific embodiment
Fig. 1 schematically illustrates the distribution of various parts in being often referred to the air processor that is shown reference number 1.
Air processor 1 comprises elongated tube-like envelope 2, and it has the cross section of circle of being generally or elliptical shape, or has any other suitable cross-sectional shape such as rectangle or polygon shape.The shape of cross section of shell 2 or area can vary along its length.In a preferred embodiment, cross section is for along constant circular of shell 2 length directions and have and be about 0.2 to 0.3 meter diameter.
Shell has an air intake 4 and at its second end an air outlet slit 6 is arranged on its first end.Usually wish that air 6 flows through shell 2 from air intake 4 to air outlet slit.In one embodiment, the longitudinal axis of shell 2 can vertical or common vertical orientation with air intake 4 with the lower end that is positioned at shell 2 and the air outlet slit 6 that is positioned at the upper end of shell 2.Yet, can select any direction of air processor in principle.
In order to ensure in air processor, catching microgranule and/or stopping all viruses, antibacterial and other harmful microorganism in fact, from air intake 4 to air outlet slit 6 by the air flow of shell 2 following by or along such as dust filter 10, HEPA filter 12, active carbon filter 14, fan 16, ion generator 18 with comprise the path of various parts of the UV process chamber 20 of at least one UV radiation source 22.Though being shown as, dust filter 10, HEPA filter 12 and active carbon filter 14 be independent of shell 2 in Fig. 1, but in the embodiment of a reality, its inwall (being represented by dotted lines) that extends to shell 2 is with each by these filters of all air flows of guaranteeing to flow through shell 2.
Make dust filter 10 be positioned at downstream with respect to air intake 4 to be captured in airborne dust particle with relatively large size.Dust filter 10 as first filter of air processor 1 is also referred to as prefilter.Be preferably dust filter interchangeable and/or capable of washing 10.
The downstream that preferred HEPA (efficiency particulate air) filter of being made by little glass fibre 12 is positioned at respect to dust filter 10 has about 0.1 to 0.3 micron and larger sized small particle to catch.HEPA filter 12 removable similar 99.97% airborne pollutants and will further catch the part of the total amount of the virus, antibacterial and the fungus that in air, exist at least.Be arranged near HEPA filter 12 relatively little UVC (ultraviolet rays Type C) radiation sources 11 and As time goes on will kill virus, antibacterial and the fungus that catches at HEPA filter 12.Be preferably interchangeable HEPA filter 12.Same preferred UVC radiation source 11 is in about 253 nanometers or any other suitable wavelength place, and emitted radiation under 40 ℃ running temperature or any other suitable running temperature.UVC radiation source 11 is preferably to be placed on the side towards the air intake 4 of shell 2 of HEPA filter 12.
Make active carbon filter 14 be positioned at downstream, and comprise that the electrode (not shown) with an adjustable electromotive force is to catch liquid (especially water) and gas by polarization with respect to HEPA filter 12.Thereby the electromotive force of the electrode that the humidity of the air by active carbon filter 14 can be by control active carbon filter 14 is controlled.With the efficient that is controlled at the air-treatment in the UV process chamber 20 is purpose, and by the humidity of control air, may command is attached to the water yield of virus and antibacterial.The humidity sensor 13 that is arranged in the downstream (being preferably placed at UV process chamber 20) with respect to active carbon filter is provided at the humidity data of blood processor 15 processing that are couple to humidity sensor 13.Blood processor 15 is couple to the electrode of active carbon filter 14, and no matter enter air processor 1 air intake 4 air humidity and so that in UV process chamber 20, realize the electromotive force of predetermined way control electrode of the predetermined moisture of about 40-50%.Thereby in active carbon filter 14, also catch gas and reduce any abnormal smells from the patient that in air flow, exists by air processor 1.
Make fan 16 be arranged in downstream with respect to active carbon filter 14 to produce high-speed air flow at air processor 1.Temperature sensor 17 is arranged in UV process chamber 20 and is couple to a blood processor (it is identical with above-mentioned blood processor 15 possibilities, also may be different).Blood processor is couple to the motor of fan 16, and control motor speed (thereby and be controlled at the flow velocity of the air in the air processor 1) is in order to reach predetermined temperature in UV process chamber 20.This temperature depends on that the air of at least one the UVC radiation source 22 that flows through in the UV process chamber 20 carries out refrigerative amount at least one UVC radiation source 22.
In a practical embodiments, air should flow to reach about 40 ℃ of steady state temperature in UV process chamber 20 along at least one UVC radiation source 22 with the speed of about 1.5 meter per seconds usually.Such temperature will be implemented in the best sterilization of the air in the UV process chamber, not consider to enter from air intake 4 temperature of the air of air processor, and the speed of the motor that it can be by control fan 16 reaches.Configuration on air processor 1 is decided, from the air flow delivery speed of 76 cubic metres/hour high to 380 cubic metres/hour (high dynamic flow) is possible, and its general room that will cause having 4 * 8 meters floor space is per hour handled the air of its whole volume several times in air processor 1.Needing should note the minimum air flow speed of about 1.5 meter per seconds to guarantee in whole room, producing air flow in the room so that all air that exist basically can be processed.
By fan 16 is placed on respect to dust filter 10, HEPA filter 12, and the downstream of active carbon filter 14, fan 16 can keep clean.Yet if fan 16 will be positioned at the upstream of one or more described filters and its with contaminated, any filter in fan 16 downstreams will remove from the fan 16 of described pollution and rely on airborne any microgranule so.
Ion generator 18 is positioned at the downstream with respect to fan 16, and with ionized air be reduced to nature, to the air of human friendly value.
Air outlet slit 6 is constructed to no any UVC radiation and can escapes from air processor 1.On the wall of air outlet slit 6, use a kind of special radiation-absorbing paint, and the structure in the similar labyrinth of air intake 6 prevents that any radiation from leaving from device.
By temperature sensor 17 and 24 and the signal that produces of humidity sensor 13 in the blood processor that is couple to respectively on it, estimated, and blood processor is suitable for cutting out air processor 1 when detecting potential improper situation or the situation of the component condition of changing air processor 1 occurs satisfying.The example of this class situation is: overheated or supercool (particularly at least one UVC radiation source 22) of the stopping of fan 16, parts, reach the exchange cycle of filter etc.
Fig. 2 A shows the shell 2 with circular cross section.The front side of described shell 2 is contained in parts in the shell 2 along hinge through with exposure.Described front side comprises air intake 4 and air outlet slit 6.Provide dust filter 10 in the inside of air intake 4.
Air processor 1 further comprises a filter shell 8, and it comprises a HEPA filter, a UV radiation source and a possible cooling unit and/or active carbon filter.In Fig. 2 A illustrated embodiment, the UV process chamber has four UV radiation sources 22 to provide enough UV radiation in order to kill in the time per unit all microorganisms by the UV process chamber at time per unit.Fan 16 is set directly at the upstream of air outlet slit 6.
Fig. 2 B is illustrated in the profile of the element that presents in the air processor 1 of Fig. 2 A.Arrow indication in Fig. 2 B is by the direction of the air flow of air processor 1.
In Fig. 2 C as the amplifier section of Fig. 2 B (in Fig. 2 B with the IIC indication), the structure of UV protective cover 30 illustrates with larger proportion.Use the preferred also localized as shown in the figure V-type dish of one deck UV radiation absorption layer that covers to stop the UV radiation to be passed through, but air flow can freely pass through.
Referring again to Fig. 2 B, HEPA filter 12 is for cylindrical and be set at coaxially in the shell 2 with shell 2, thereby the big filter surface is provided.The big filter surface provides the low air flow dynamic resistance and such as the long service life and the good filtering feature of high filter capacity.The one UV radiation source 11 is arranged in the center (also can as Fig. 2 C seen in) of HEPA filter, and its emission UV is radiated to the surface of the HEPA filter around it.This configuration has further favourable part, and promptly the radiating direction of UV is substantially perpendicular to the surface of HEPA filter.Thereby, can be owing on the HEPA filter, do not exist by the stain or the fiber of other fiber protection, the UV radiation of use is more effective.
In illustrated embodiment (also can in Fig. 2 D (IID among Fig. 2 B) as seen), in filter housing 8, provide cooling unit 14A and active carbon filter 14B.In addition, four UV radiation sources 22 that are configured in the UV process chamber 20 are located each other so that in operation, the UV radiation density in UV process chamber 20 is uniform basically.
Shown in Fig. 2 B and 2E (as being shown as IIE among Fig. 2 B), the 2nd UV protective cover 32 is set in the downstream of UV process chamber 20, and the ion generator that fan 16 is provided and comprises an anode 18A and a negative electrode 18B in downstream more.
Should note to comprise several pick offs such as one or more temperature sensors, one or more humidity sensors and/or microbiological sensor to the embodiment of the illustrated air processor 1 of 2E, though it is not showed in 2E at Fig. 2 A at Fig. 2 A.In addition, be substantially similar to the embodiment of Fig. 1 to the function of 2E illustrated embodiment at Fig. 2 A.
Described microbiological sensor can be determined at the number of the microorganism that exists in the air.This pick off can be set directly at the downstream of air intake 4 and be set directly at the upstream of air outlet slit 6.Described microbiological sensor is couple to the blood processor of can determine to sterilize coefficient or coefficient resemblance.Can show this sterilization coefficient.At one more in the complex embodiments, the number of the microorganism that exists in air also can be used for controlling air processor 1.
Owing to use the UV radiation of the deleterious wavelength of possibility according to air processor of the present invention, so an embodiment can have several safety measures, for example survey the aperture of shell and can close any UV radiation source and be transmitted into your jaw opening sensor to prevent the UV radiation.
In addition, the UV radiation source can be a kind of not ozoniferous radiation source and air processor can have the display that is used for to the state of user notification air processor and/or any filter as mentioned above.Display can be connected to the blood processor of also controlling air processor.
As mentioned above, the method according to this invention and device are suitable for killing basically all microorganisms that exist in the air flow with upper air current speed, but the air processor of prior art only filters big relatively microorganism and dust particle from air flow.Fig. 3 shows that the microorganism of the function of the size that is illustrated as microorganism removes the chart of rate.Depend on the size of microorganism, it is divided into several cohorts: dust, pollen, Nicotiana tabacum L. (flue dust), mycete, antibacterial and virus.Solid line is represented the performance of air processor of prior art and the dotted line representative performance according to air processor of the present invention.
Prior-art devices removes all contaminants with the size up to 1 micron up to 100%.Some less pollutant are removed, but remain in the air less than about 1 micron pollutant.Thereby reaching 99.97% pollutant approximately can remove from air.Because sterilization is defined as and removes 99.9999% of pollutant at least, is air purifier so show the air processor of prior art.
Also from air, remove less air pollutants according to air processor of the present invention.Shown in dotted line, reach 100% all contaminants and be removed.The test of independent trials chamber (Microsearch Laboratories Ltd. (Britain) and Biotec (Germany)) has showed that the pollutant greater than 99.9999% are removed by air processor according to the present invention.Thereby, according to above-mentioned sterilization definition, can show that according to air processor of the present invention be the air sterilization device.
For the organism that prevents to make a variation may leave air processor, need kill all microorganisms.Therefore, be exposed to the UV radiation that the radiating microorganism of UV receives the minimum dose that kills described microorganism.Can take several measures with efficient that increases the UV radiation source and the UV radiation of exporting by described UV radiation source.For example, the UV process chamber can have the reflecting layer, but the pre-filtering air, can make air dehydration and may command air themperature and air flow speed.
Fig. 4 is illustrated as the delivery efficiency of UV radiation source and the functional relationship of the air flow speed of the air flow that passes through the UV radiation source, and air has about 20 ℃ temperature.Running temperature is depended in the UV radiation output of UV radiation source.As mentioned above, the optimum operation temperature of UV radiation source is 40 ℃.The UV radiation source is cooled because of the air that passes through.If air flow cooling UV radiation source, power consumption may increase to the above generation with the increase heat of rated power rank so.Thereby radiation source can remain on its best running temperature.
As shown in Figure 4, by high efficiency drive, the minimum that this speed is higher than 1.5 meter per seconds of discussing above requires air flow speed to the UV radiation source in the air flow of the air flow speed with about 1.52 meter per seconds (about 300 feet per minute clocks).Simultaneously, therefore the UV radiation source produces heat to compensate the cooling influence by air basically with the power drive bigger than rated power.Should notice that the above-mentioned suitable cover on the UV radiation source can prevent that the UV radiation source from cooling off suddenly.
That in fact embodies in air processor according to the present invention also can be used in other blood processor according to air-treatment method of the present invention.For example UV-C handles and may be suitable for very much sterilizing to object.In hospital (for example), many objects need sterilization.In addition, except air, can give other fluid disinfection such as gas (oxygen that for example in hospital, uses) and water.Decide on using, can use pre-filtering.
Have according to air processor of the present invention and method, can purify the restricted quarter safely, particularly by killing all viruses, antibacterial, fungus and other potential harmful microorganism and removing dust and other microgranule purifies.The design of air processor is to kill the UV dosage that any microorganism needs.Select many parameters (for example speed of the air flow at the size of UV process chamber, the air velocity in the UV process chamber and air outlet slit place) of above-detailed so that kill all microorganisms in dynamic air stream basically, guarantee that simultaneously air that cleans and the air that exists mix in the room.This means the inlet that forces at the air admission air processor of room opposite side.Thereby, prevent that a large amount of microorganisms from may make a variation and be detrimental microorganisms.
Claims (38)
1. air processor, it comprises:
Shell, it comprises air intake and air outlet slit;
Fan, it is used to promote to pass through from described air intake to described air outlet slit the air flow of described shell;
At the UV process chamber with respect to described air intake downstream, described UV process chamber comprises that at least one is used for described air flow is exposed to the radiating UV radiation source of UV that is used to kill the microorganism that exists at described air flow.
2. air processor according to claim 1, it further is included at least one filter with respect to described UV process chamber upstream, it was used for before described air flow is exposed to described UV radiation, removed to have the microgranule and the microorganism of filtering the big size of diameter than predetermined from described air flow.
3. air processor according to claim 2, described air processor comprises:
At the dust filter with respect to the downstream of described air intake, it is used for removing big dust particle from described air flow; With
At the HEPA filter with respect to the downstream of described dust filter, it is used for removing little dust particle and big microorganism from described air flow.
4. air processor according to claim 2, described air processor is included in the active carbon filter with respect to the downstream of described air intake, and it is used for removing dust particle and microorganism from described air flow.
5. air processor according to claim 2 wherein provides filter UV radiation source, and it is used to shine the UV radiation at least one of described at least one filter.
6. air processor according to claim 1, wherein said fan is positioned at the upstream with respect to described UV process chamber, so that the described air flow in described UV process chamber is essentially turbulent.
7. air processor according to claim 2, it further is included in the cooling unit with respect to the downstream of described at least one filter, and it is used for cooling and makes described air flow dehydration by cooling.
8. air processor according to claim 7, wherein humidity sensor is set in downstream with respect to described cooling unit, and a blood processor receives humidity data from described humidity sensor, and described blood processor is controlled described cooling unit to provide predetermined moisture in described UV process chamber.
9. air processor according to claim 8, wherein said humidity sensor are set in the described UV process chamber.
10. according to the described air processor of arbitrary claim among the claim 7-9, wherein first temperature sensor is set in downstream with respect to described cooling unit, and a blood processor receives first temperature data from described first temperature sensor, and described blood processor is controlled described air flow speed to provide predetermined temperature to the described air that leaves described UV process chamber by the control fan speed.
11. air processor according to claim 10, wherein said temperature sensor is set directly at the downstream of described UV process chamber.
12. according to the described air processor of arbitrary claim in the aforementioned claim, it further is included in the ion generator with respect to the downstream of described at least one filter, it is used to provide the electron stream of the direction that is substantially perpendicular to air flow.
13. according to the described air processor of arbitrary claim among the claim 7-11, it further is included in the ion generator with respect to the downstream of described cooling unit, it is used to provide the electron stream of the direction that is substantially perpendicular to described air flow.
14. according to the described air processor of arbitrary claim in the aforementioned claim, it further is included in second active carbon filter with respect to the downstream of described at least one filter.
15. according to the described air processor of arbitrary claim among the claim 7-11, it further is included in second active carbon filter with respect to the downstream of described at least one filter, and described active carbon filter and described cooling unit are combined in the unit.
16. according to the described air processor of arbitrary claim in the aforementioned claim, the inwall of wherein said UV process chamber has UV radiation reflecting layer.
17. air processor according to claim 16, wherein said reflecting layer is made up of aluminum.
18. according to claim 16 or 17 described air processors, wherein said reflecting layer has rough surface so that the UV radiation of reflection is scattered.
19. according to the described air processor of arbitrary claim among the claim 16-18, wherein said reflecting layer is formed by the aluminum of sputter.
20. according to the described air processor of arbitrary claim in the aforementioned claim; wherein said the 2nd UV radiation source has second temperature sensor and receives the blood processor of second temperature data from described second temperature sensor; the power output of described at least one the UV radiation source of described blood processor control can be not supercool or overheated to protect described at least one UV radiation source.
21. according to the described air processor of arbitrary claim in the aforementioned claim, it further comprises at least one microbiological sensor, it is used for being determined at the number of the microorganism that the described air by described microbiological sensor exists.
22. air processor according to claim 21, wherein said microbiological sensor is connected to a blood processor, and described blood processor responds the microbe number of described mensuration and controls described air processor.
23. according to claim 21 or 22 described air processors, first microbiological sensor directly is provided in the downstream of described air intake and directly provides second microbiological sensor in the upstream of described air outlet slit, described first and described second microbiological sensor be connected to a blood processor, described blood processor is determined the coefficient of sterilizing according to the number of the number of the microorganism of being measured that exists and the microorganism that exists measured in the described air that flows out described air processor in flowing into the described air of described air processor.
24. according to the described air processor of arbitrary claim in the aforementioned claim, wherein said at least one UV radiation source is set in the cover, described cover is a transmissive for the UV radiation of emission.
25. air processor according to claim 24, wherein said cover is made by politef.
26. according to the described air processor of arbitrary claim in the aforementioned claim, wherein described air intake in described shell and described air outlet slit can not escaped from described shell so that there is the UV radiation through structure.
27., wherein on the wall of described shell, provide UV radiation absorption layer according to the described air processor of arbitrary claim in the aforementioned claim.
28. according to the described air processor of arbitrary claim in the aforementioned claim, the UV radiation of wherein said at least one UV radiation source emission has the wavelength of wavelength, particularly 253.7nm between 253nm and 257nm.
29. air processor according to claim 5, the UV radiation of wherein said filter UV radiation source emission has the wavelength of wavelength, particularly 253.7nm between 253nm and 257nm.
30. an air conditioning system that comprises air processor, described air processor comprises:
Shell, it comprises air intake and air outlet slit;
Fan, it is used to promote to pass through from described air intake to described air outlet slit the air flow of described shell;
At the dust filter with respect to the downstream of described air intake, it is used for removing big dust particle from described air flow;
At the HEPA filter with respect to described dust filter downstream, it is used for removing little dust particle and big microorganism from described air flow;
The one UV radiation source, it is used to shine the UV radiation in described HEPA filter; With
At the UV process chamber with respect to described HEPA filter downstream, described UV process chamber comprises and is used for shining the two UV radiation source of UV radiation in described UV process chamber.
31. an air-treatment method, it comprises:
Produce air flow; With
Emission UV radiation, it is used for described air flow is exposed to the described UV radiation that is used to kill the microorganism that exists at described air flow.
32. air-treatment method according to claim 31, described method further are included in described air flow is exposed to before the described UV radiation, from described air flow, filters and have the microgranule and the microorganism of filtering the big size of diameter than predetermined.
33. according to claim 31 or 32 described air-treatment methods, described method further is included in described air flow is exposed to before the described UV radiation, makes described air flow dehydration.
34. according to the described air-treatment method of arbitrary claim among the claim 31-33, described method further comprises:
Determine the air themperature of described air flow; With
Respond described air themperature and control air flow speed.
35. according to the described air-treatment method of arbitrary claim among the claim 31-34, described method further is included in the described air flow and produces electron stream, described electron stream is substantially perpendicular to the direction of described air flow.
36. according to the described air-treatment method of arbitrary claim among the claim 31-35, described method further comprises:
Determine the temperature of UV radiation source;
The power consumption of controlling described UV radiation source is to protect the described UV radiation source can be not overheated or supercool.
37. according to the described air-treatment method of arbitrary claim among the claim 31-36, described method further comprises:
Determine the number of the microorganism that in described air flow, exists; With
Respond the number of described definite microorganism and control in consuming at least one of air flow speed, hydration level and power of radiation source.
38. according to the described air-treatment method of claim 37, described method comprises:
Before described air flow is exposed to described UV radiation, determine the input number of the microorganism that in described air flow, exists;
After described air flow is exposed to described UV radiation, determine the output number of the microorganism that in described air flow, exists; With
According to described microorganism input number and described microorganism output number, determine the sterilization coefficient;
Wherein respond described sterilization coefficient and control in consuming at least one of air flow speed, hydration level and power of radiation source.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL0300730 | 2003-10-27 | ||
| NLPCT/NL03/00730 | 2003-10-27 | ||
| NLPCT/NL04/000209 | 2004-03-26 |
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| CN1893983A true CN1893983A (en) | 2007-01-10 |
| CN100479865C CN100479865C (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004800330256A Expired - Fee Related CN100479865C (en) | 2003-10-27 | 2004-10-26 | Air processing method and device |
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| CN (1) | CN100479865C (en) |
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| CN102389156A (en) * | 2010-07-15 | 2012-03-28 | 艾伯特.汉德特曼机器制造有限责任两合公司 | Method and device for cooling food machines |
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