CN111486519A - Sealed air filtering type efficient ultraviolet disinfection and sterilization device and method - Google Patents

Abstract

The invention discloses a closed air filtering type high-efficiency ultraviolet disinfection and sterilization device and a method, comprising a shell, an ultraviolet germicidal lamp, a wind barrier turbulence component and a coanda effect diversion generation component, wherein the shell comprises a cavity forming a closed space, an air supply outlet and an air outlet communicated with the cavity; kangda effect flow guideThe generating assembly is fixed at one end close to the air outlet; the dominant wavelengths of the ultraviolet germicidal lamp are 253.7nm for destroying microorganism DNA structures and 184.9nm for generating ozone; the air generates cyclone in the cavity through the wind barrier turbulence component and the coanda effect flow guide generation component and passes through UVC/O₃And outputting from the air outlet after sterilization. The invention has the characteristics of high efficiency, time delay, silence, safety and the like, and ultraviolet rays and O₃No leakage, and no harm to human health.

Description

Closed air filter type high-efficiency ultraviolet disinfection and sterilization device and method

technical field

The invention relates to the technical field of sterilization and sterilization, in particular to a closed air filtration type high-efficiency ultraviolet sterilization and sterilization device and method.

Background technique

The existing ultraviolet disinfection device belongs to the static disinfection mode, and has the following shortcomings:

1) When the device is working, personnel cannot move in the same space, otherwise it will have an adverse impact on human health and affect the normal life and work of indoor personnel;

2) The λ=200nm~280nm radiation emitted by the UVC ultraviolet germicidal lamp, while disinfecting and sterilizing, the lethal chemical rays will accelerate the aging of indoor plastics, rubber, nylon and polyester and other chemical materials, and have odor volatilization.

SUMMARY OF THE INVENTION

The present invention proposes a closed air filter type high-efficiency ultraviolet disinfection and sterilization device and method. All ultraviolet rays and their generated ozone ions are confined in the closed device cavity and do not affect the normal life and work of indoor personnel.

The technical scheme of the present invention is realized as follows:

A closed air filter type high-efficiency ultraviolet disinfection and sterilization device, comprising a casing, an ultraviolet germicidal lamp, a wind barrier turbulence component, and a Coanda effect diversion generating component, the casing includes a cavity forming a closed space, and the The air supply port and the air outlet that are connected to the cavity, the ultraviolet germicidal lamp is fixed on the bottom of the cavity, and the wind barrier spoiler assembly includes a plurality of T-shaped wind baffles, the height of the T-shaped wind baffles is along the The air inlet-air outlet direction increases in steps; the Coanda effect diversion generating component is fixed at one end close to the air outlet; the main line wavelength of the ultraviolet germicidal lamp is 253.7 nm for destroying the DNA structure of microorganisms and for generating ozone 184.9nm; the air passes through the wind barrier turbulence component and the Coanda effect diversion generating component to generate a cyclone in the cavity, and is output from the air outlet after being sterilized by UVC/O ₃ .

As a preferred embodiment of the present invention, the air supply port includes a plurality of parallel inclined air inlet holes, and the air enters the end away from the air outlet through the air inlet hole, and the air outlet includes a plurality of parallel inclined air outlet holes. down from the air outlet to the outside.

As a preferred embodiment of the present invention, the height of the T-shaped wind baffle is calculated according to the formula x ² =2py, p<0.

As a preferred embodiment of the present invention, it further includes a quartz water tube permeable to ultraviolet rays, the quartz water tube is fixed in the cavity, and both the water inlet and the water outlet pass through the casing.

As a preferred embodiment of the present invention, the device is a wall-mounted/ceiling-mounted or mobile structure.

As a preferred embodiment of the present invention, the ultraviolet germicidal lamp includes a ballast and a lamp holder of a discrete structure, the ballast supplies power to the lamp holder, and the ballast and the lamp holder are detachable fixed inside the housing.

A closed air filtration type high-efficiency ultraviolet disinfection and sterilization method, comprising the following steps:

Step 1, processing the casing, the two adjacent sides of the casing are provided with air supply ports and air outlets, and the sealing components are fixed on the sides of the air supply ports and the air outlet;

Step 2, the main line wavelength is 253.7nm for destroying the DNA structure of microorganisms and 184.9nm for generating ozone. The ultraviolet germicidal lamp is fixedly installed in the inside of the side face opposite to the air supply port of the casing;

Step 3, install the wind barrier spoiler component and the Coanda effect diversion generating component on the same side of the ultraviolet germicidal lamp, and the Coanda effect diversion generating component is close to the air outlet;

Step 4, the ultraviolet germicidal lamp starts to work after preheating for 3-5 minutes.

As a preferred embodiment of the present invention, the heights of the wind barrier spoiler component and the Coanda effect diversion generating component are calculated according to the formula x ² =2py, p<0.

The beneficial effects of the present invention are:

1) Novelty: It has the effect of killing viruses and sterilization, and the ozone (O ₃ ) generated by ultraviolet UVC radiation and the multiplicative effect of UVC/O ₃ are used together.

2) Efficiency: In a closed small volume space, the ultra-high radiation dose of ultraviolet rays in the antivirus and sterilization band and the ozone concentration generated can kill most of the known pathogenic microorganisms.

3) Delay: The principle of Coanda effect (Coanda effect) is used to force the airflow to leave the original flow direction for many times, and the cyclone (or turbulence) is generated with the progressive convex surface of the wind barrier device, which prolongs the air residence time. , to achieve sufficient disinfection and sterilization time.

4) Quietness: At the same time of realizing the delay, the stepped-progressive convex surface is used to generate a local small cyclone (or turbulent flow) effect to achieve maximum silence.

5) Safety: All ultraviolet rays and their generated ozone ions are confined to the airtight device cavity, which does not affect the normal life and work of indoor personnel.

6) Directionality: Due to the existence of the Coanda effect of the device, the airflow at the outlet of the device belongs to the directional airflow, so the distance can be transmitted very far, and the purified airflow floats in the upper space and gradually moves down. The Coanda effect causes the air flow at the outlet of the device to generate a cyclone above the room, and the air below the room is discharged from the return air outlet of the air conditioner under the pressure of the cyclone.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the principle block diagram of one embodiment of a closed air filter type high-efficiency ultraviolet disinfection and sterilization device of the present invention

Fig. 2 is a side structure schematic diagram of an embodiment of a closed air filter type high-efficiency ultraviolet disinfection and sterilization device of the present invention;

FIG. 3 is a schematic top-view structure diagram of an embodiment of a closed air filter type high-efficiency ultraviolet disinfection and sterilization device according to the present invention.

In the figure, 1-shell, 2-ultraviolet germicidal lamp, 201-ballast, 202-lamp holder, 3-wind barrier spoiler assembly, 4-conda effect diversion generating assembly, 5-air outlet, 6- Air outlet, 7-hinge, 8-sealing rubber.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms vertical, up, down, horizontal, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms setting, installation, connection and connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be connected in one piece; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figures 1-3, the present invention proposes a closed air filter type high-efficiency ultraviolet disinfection and sterilization device, comprising a casing 1, an ultraviolet germicidal lamp 2, a wind barrier turbulence component 3, and a Coanda effect diversion generating component 4. The housing 1 includes a cavity that forms a closed space, an air supply port 5 and an air outlet 6 that communicate with the cavity, the ultraviolet germicidal lamp 2 is fixed at the bottom of the cavity, and the wind barrier spoiler assembly 3 includes several T-shaped wind barriers. The height of the T-shaped wind baffle increases stepwise along the air inlet-air outlet direction; the height of the T-shaped wind baffle is calculated according to the formula x ² =2py, p<0. The Coanda effect diversion generating component 4 is fixed at one end close to the air outlet 6; the main line wavelengths of the ultraviolet germicidal lamp 2 are 253.7 nm for destroying the DNA structure of microorganisms and 184.9 nm for generating ozone; the air passes through the wind barrier spoiler component 3 and the Coanda effect diversion generating component 4 generate cyclone in the cavity, which is output from the air outlet 6 after being sterilized by UVC/O ₃ .

The invention relates to an ultraviolet sterilization and sterilization device, which can efficiently kill or reduce various microorganisms in indoor air, including various bacteria and their spores, viruses, fungi and their spores, rickettsia and mycoplasma. After the preheating process of the lamp tube for 3 to 5 minutes, when the device is working, the UVC ultraviolet germicidal lamp 2 will emit an ultra-high dose of anti-virus and sterilization band (UVC, λ = 200nm ~ 280nm) lethal chemical radiation (λ=253.7 nm), while ozone O ₃ (λ=184.9 nm) is produced.

The stepped progressive wind barrier of the T structure and the Coanda effect (Coanda effect) make the air flow at the air outlet of the air conditioning equipment produce primary cyclone (turbulent flow) → secondary cyclone (turbulent flow), resulting in sufficient buffer time for the air flow of the air conditioning equipment. Microorganisms and bacteria are made to accept lethal radiation of ultraviolet (UVC) at t=4.63s and biochemical oxidation reaction of ozone (O ₃ ) in a closed small volume space.

The flow velocity is the flow velocity of the fluid. When the flow velocity is very small, the fluid flows in layers and does not mix with each other, which is called laminar flow (sheet flow). When the flow velocity is gradually increased or the airflow is affected by the vertical wind barrier, the streamline of the fluid is no longer clear. It can be discerned that there are many small eddies in the flow field, which are called turbulence (turbulent flow, turbulent flow or turbulent flow). This change is quantified by Reynolds number: Re=ρvd/μ, where v, ρ, μ are the flow velocity, density and viscosity coefficient of the fluid, respectively, d: characteristic length. For example, the fluid flows through a circular pipe, then d is the equivalent diameter of the pipe. The Reynolds number can be used to distinguish whether the flow of a fluid is laminar or turbulent, and it can also be used to determine the resistance of an object to flow in a fluid. The main principle of the wind barrier spoiler component 3: After setting the wind barrier perpendicular to the incoming wind direction, it forms an obstacle to the wind, reduces the air flow speed, and the small changes in the flow speed are easy to develop and strengthen, forming turbulent and irregular turbulent flow. field.

The air conditioner sends out a substantially directional airflow with a certain pressure P ₀ and a propagation velocity υ ₀ , and the direction is perpendicular to the wind barrier. If there is no wind barrier, the air flow will directly reach the ground, and after reflection, a cyclone will be formed at the air return port to achieve the purpose of cold/hot and heat/cold exchange with the indoor air; after the wind barrier is installed, the edge of the wind barrier will cause the spread of the air flow The path is deformed and twisted, reducing the pressure of the air flow, P ₁ <P ₀ , thereby reducing the propagation speed of the air flow, υ ₁ <υ ₀ . Moreover, due to the reflection effect of the wind barrier support, a plurality of cyclones are formed on the ground between the wind barrier and the ground, causing the airflow to be turbulent.

At the end of the installed wind barrier, the Coanda effect (Coanda effect) is used to force the airflow to leave the original flow direction again, and change to the tendency to flow with the surface of the protruding object at the end of the wind barrier; When there is surface friction between the end surfaces of the windshield of the device flowing through, as long as the curvature is not large, the air flow of the air outlet of the air conditioner will flow along the end surface of the windshield; according to Newton's third law, the object exerts a deflection on the fluid force, the fluid must also exert an opposite deflection force on the object. Due to the existence of the Coanda effect of the device, the airflow at the outlet of the device belongs to the directional airflow, so the distance can be transmitted very far, and the purified airflow floats in the upper space and gradually moves down. The airflow reaches the ground directly and forms a cyclone at the return air after reflection. Therefore, it is possible to avoid repeated labor disinfection of indoor air by the device.

The air supply port 5 includes several parallel inclined air inlet holes, and the air enters the end away from the air outlet 6 from the air inlet hole. Specifically, the air supply port 5 is connected to the air outlet of the air conditioner shutter, and the air outlet 6 is the air outlet of the sterilizer shutter.

The present invention also includes a quartz water pipe permeable to ultraviolet rays, the quartz water pipe is fixed in the cavity, and both the water inlet and the water outlet pass through the casing 1 . As long as an ultraviolet light-transmitting quartz water pipe is attached inside the device, the sterilization and disinfection of the circulating water can be completed while purifying and sterilizing the air.

Units are wall/ceiling or mobile structures. Compared with the air source, the wall-mounted and ceiling-mounted types use the air fed from the air-conditioning air outlet, and the object performs closed air filter-type instant purification and sterilization for the air-conditioned air; Purification and disinfection. In the wall-mounted type/ceiling type, the housing 1 is fixed on the ceiling or wall through hinges 7, and a sealing rubber 8 is provided at the connection between the housing 1 and the ceiling or wall. The mobile device needs a 12-24VDC 20-30W electric power DC eddy-current fan, and the change of the direction of the air outlet changes the installation direction of the structure. The principle structure is the same as that of the wall-mounted and ceiling-mounted types.

The ultraviolet germicidal lamp 2 includes a ballast 201 and a lamp holder 202 in a discrete structure. The ballast 201 supplies power to the lamp holder 202. The ballast 201 and the lamp holder 202 are detachably fixed inside the housing 1, which is convenient for lamp replacement. , and wipe regularly.

A closed air filtration type high-efficiency ultraviolet disinfection and sterilization method, comprising the following steps:

)边缘加厚至

→加工密封胶条嵌入槽，嵌入槽以真空密封技术设计，密封胶条(聚四氟乙烯，可以是O形密封圈)。Step 1, process the casing, the two adjacent sides of the casing are provided with an air supply port and an air outlet, and the sealing components are fixed on the sides of the air supply port and the air outlet; the casing (light aluminum alloy,

) edges are thickened to

→ Process the sealant strip into the groove, the embedded groove is designed with vacuum sealing technology, and the sealant strip (polytetrafluoroethylene, can be an O-ring seal).

Step 2: Fix the ultraviolet germicidal lamp with the main line wavelength of 253.7 nm for destroying the DNA structure of microorganisms and 184.9 nm for generating ozone inside the side of the casing opposite to the air outlet; the ultraviolet germicidal lamp includes a discrete structure The ballast and lamp holder are provided, the ballast supplies power to the lamp holder, and the ballast and the lamp holder are detachably fixed inside the housing, which is convenient for lamp replacement and regular cleaning.

材质构成，其安装方向与紫外灯灯管垂直，预留安装紫外灯灯管的豁口，风障扰流组件壳用螺钉固定；风障扰流组件和康达效应导流发生组件的高度根据公式x²＝2py，p<0计算。Step 3, install the wind barrier spoiler component and the Coanda effect diversion generating component on the same side of the ultraviolet germicidal lamp, and the Coanda effect diversion generating component is close to the air outlet; the wind barrier spoiler component is made of light aluminum alloy,

Material composition, the installation direction is perpendicular to the UV lamp tube, the gap for installing the UV lamp tube is reserved, and the wind barrier spoiler component shell is fixed with screws; the height of the wind barrier spoiler component and the Coanda effect diversion component is based on the formula x ² =2py, p<0 is calculated.

Step 4, the ultraviolet germicidal lamp starts to work after preheating for 3-5 minutes.

The beneficial effects of the present invention are:

1) Novelty: It has the effect of killing viruses and sterilization, and the ozone (O ₃ ) generated by ultraviolet UVC radiation and the multiplicative effect of UVC/O ₃ are used together.

2) Efficiency: In a closed small volume space, the ultra-high radiation dose of ultraviolet rays in the antivirus and sterilization band and the ozone concentration generated can kill most of the known pathogenic microorganisms.

3) Delay: The principle of Coanda effect (Coanda effect) is used to force the airflow to leave the original flow direction for many times, and the cyclone (or turbulence) is generated with the progressive convex surface of the wind barrier device, which prolongs the air residence time. , to achieve sufficient disinfection and sterilization time.

4) Quietness: At the same time of realizing the delay, the stepped-progressive convex surface is used to generate a local small cyclone (or turbulent flow) effect to achieve maximum silence.

5) Safety: All ultraviolet rays and their generated ozone ions are confined to the airtight device cavity, which does not affect the normal life and work of indoor personnel.

6) Directionality: Due to the existence of the Coanda effect of the device, the airflow at the outlet of the device belongs to the directional airflow, so the distance can be transmitted very far, and the purified airflow floats in the upper space and gradually moves down. The Coanda effect causes the air flow at the outlet of the device to generate a cyclone above the room, and the air below the room is discharged from the return air outlet of the air conditioner under the pressure of the cyclone.

7) Expansion: As long as a quartz water pipe that can transmit ultraviolet light is attached inside the device, the sterilization and disinfection of circulating water can be completed while purifying and disinfecting the air.

8) Equipped with high-pressure electrostatic sterilization and/or electrostatic dust collection mechanism, the high-voltage electrostatic field can instantly and completely kill the bacteria and viruses attached to the dust. Its sterilization mechanism is to destroy the four polypeptide chains of the bacterial capsid protein and damage the RNA. Electric dust collection is a method that can not only ensure the air volume but also absorb fine particles for sterilization and disinfection. The electric dust collection part originally applied a high voltage to the two electrodes, and when the two electrodes were discharged, the passing dust was charged. If the distance between the two electrodes of the air purifier is too close, electric sparks will be triggered, and the dust cannot be charged. Therefore, an appropriate distance is required between the two electrodes, so that even if the two electrodes are close to each other, no spark will be generated.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. within.

Claims (8)

1. a closed air filter type high-efficiency ultraviolet disinfection and sterilization device, it is characterized in that: comprise shell, ultraviolet sterilization lamp, wind barrier disturbing flow assembly, Coanda effect diversion generating assembly, and described shell includes forming a closed space. A cavity, an air supply port and an air outlet that communicate with the cavity, the ultraviolet germicidal lamp is fixed on the bottom of the cavity, and the wind barrier spoiler assembly includes several T-shaped wind baffles, the T-shaped The height of the wind baffle increases stepwise along the air intake-air outlet direction; the Coanda effect diversion generating component is fixed at one end close to the air outlet; the main line wavelength of the ultraviolet germicidal lamp is 253.7 for destroying the DNA structure of microorganisms nm and 184.9 nm for ozone generation; the air passes through the wind barrier spoiler component and the Coanda effect diversion generating component to generate a cyclone in the cavity, and is sterilized by UVC/O ₃ and then output from the air outlet. 2. The airtight air filter type high-efficiency ultraviolet sterilizing and sterilizing device according to claim 1, is characterized in that: the air supply port comprises several parallel inclined air inlet holes, and the air enters one end away from the air outlet by the air inlet hole, so The air outlet includes several parallel inclined air outlet holes, and air flows from the air outlet holes to the outside from top to bottom. 3. The airtight air filter type high-efficiency ultraviolet disinfection and sterilization device according to claim 1 or 2, wherein the height of the T-shaped wind baffle is calculated according to the formula x ² =2py, p<0. 4. The airtight air filter type high-efficiency ultraviolet disinfection and sterilization device according to claim 1, characterized in that: also comprising a quartz water pipe permeable to ultraviolet rays, the quartz water pipe is fixed in the cavity, and the water inlet and the water outlet are both through the housing. 5. The airtight air filtration type high-efficiency ultraviolet disinfection and sterilization device according to claim 1, wherein the device is a wall-mounted/ceiling type or a mobile structure. 6. The airtight air filter type high-efficiency ultraviolet disinfection and sterilization device according to claim 1, characterized in that: the ultraviolet germicidal lamp comprises a ballast and a lamp holder of a discrete structure, and the ballast is the The lamp holder is powered, and the ballast and the lamp holder are detachably fixed inside the housing. 7. A sealed air filter type high-efficiency ultraviolet sterilization method, characterized in that, comprising the following steps: Step 1, processing the casing, the two adjacent sides of the casing are provided with air supply ports and air outlets, and the sealing components are fixed on the sides of the air supply ports and the air outlet; Step 2, the main line wavelength is 253.7nm for destroying the DNA structure of microorganisms and 184.9nm for generating ozone. The ultraviolet germicidal lamp is fixedly installed in the inside of the side face opposite to the air supply port of the casing; Step 3, install the wind barrier spoiler component and the Coanda effect diversion generating component on the same side of the ultraviolet germicidal lamp, and the Coanda effect diversion generating component is close to the air outlet; Step 4, the ultraviolet germicidal lamp starts to work after preheating for 3-5 minutes. 8. airtight air filtration type high-efficiency ultraviolet sterilization method according to claim 7 is characterized in that: the height of wind barrier spoiler assembly and Coanda effect diversion generating assembly is calculated according to formula x ² =2py, p<0 .

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