CN114146998A - Positive pressure airflow window cleaning device and method - Google Patents
Positive pressure airflow window cleaning device and method Download PDFInfo
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- CN114146998A CN114146998A CN202111256946.0A CN202111256946A CN114146998A CN 114146998 A CN114146998 A CN 114146998A CN 202111256946 A CN202111256946 A CN 202111256946A CN 114146998 A CN114146998 A CN 114146998A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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Abstract
The invention relates to a positive pressure airflow window cleaning device and a method, wherein the device comprises a positive pressure airflow protective device arranged on the periphery of a window of a screen device; the positive pressure airflow protection device comprises at least one air inlet channel, at least one air distribution cavity, a window surface airflow filling cavity and a window channel, wherein the air distribution cavities are uniformly distributed in the positive pressure airflow protection device, the at least one air inlet channel is communicated with the at least one air distribution cavity, fine through holes are distributed on the wall surfaces of different areas of the air distribution cavities, the window surface airflow filling cavity is formed between the air distribution cavity wall and a perspective window surface, the window channel is arranged in the middle of the positive pressure airflow protection device and is communicated with the window surface airflow filling cavity, airflow enters the window surface airflow filling cavity through the fine through holes and passes through the periphery of the perspective window surface, gathers to the middle and flows out through the window channel. The invention can effectively solve the problem of ensuring that the detection window is pollution-free for a long time in severe environments such as high dust or water mist and the like, and the size of the protection device can be controlled to be smaller.
Description
Technical Field
The invention belongs to the field of visual detection, and particularly relates to a positive pressure airflow window cleaning device and method.
Background
Whether a high-quality detection image can be obtained in various visual detection applications is one of the key conditions for determining the detection effect of a visual detection product, and the problem of pollution protection of a detection window must be solved firstly to obtain the high-quality detection image.
At present, a plurality of window protection cleaning methods exist in the field of visual inspection, but most of the methods are to wash, scrape and clean the window, replace a window film, continuously blow the window surface by using an air curtain or blow a window channel to keep the window surface clean.
The methods mainly solve the problem that the window is cleaned after being polluted, and meanwhile, the methods have the following defects and cannot solve the problem that the detection window is ensured to be free of pollution for a long time under severe environments such as high dust or water mist and the like:
1. the window film can be washed, scraped and replaced to affect the detection, and the cleaning frequency cannot be high.
2. The use of direct blowing across the window surface to clean the window presents problems of uneven window surface blowing and the sticking of sticky contaminants to the window with the airflow.
3. The method for protecting the window by adopting the blowing window channel has the problems that the air pressure full coverage of the window channel cannot be ensured to completely prevent pollutants from entering the window channel to pollute the window surface, or a large-caliber air inlet mode meeting the caliber air flow of the window channel is required to be adopted, so that the structural size of the whole device is large, and the air flow loss is large.
Disclosure of Invention
The invention provides a positive pressure airflow window cleaning device and a positive pressure airflow window cleaning method, which aim to prevent pollutants from entering a window protection channel and keep the window clean by utilizing compressed air to enter to generate a full positive pressure airflow area in the window protection channel. By the method, the problem that the detection window is guaranteed to be free of pollution for a long time in severe environments such as high dust or water mist can be effectively solved, and the size of the protection device can be controlled to be small.
The technical scheme of the invention is as follows:
a positive pressure airflow window cleaning device comprises a positive pressure airflow protective device arranged on the periphery of a window of a screen device;
the positive pressure airflow protection device comprises at least one air inlet channel, at least one air distribution cavity, a window surface airflow filling cavity and a window channel, wherein the air distribution cavities are uniformly distributed in the positive pressure airflow protection device, the at least one air inlet channel is communicated with the at least one air distribution cavity, fine through holes are distributed on the wall surfaces of different areas of the air distribution cavities, the window surface airflow filling cavity is formed between the air distribution cavity wall and a perspective window surface, the window channel is arranged in the middle of the positive pressure airflow protection device and is communicated with the window surface airflow filling cavity, airflow enters the window surface airflow filling cavity through the fine through holes and passes through the periphery of the perspective window surface, gathers to the middle and flows out through the window channel.
Furthermore, the positive pressure airflow protection device is annular, at least one air distribution cavity is annularly arranged in the positive pressure airflow protection device, and at least one air inlet channel is distributed on the periphery of the positive pressure airflow protection device.
Furthermore, two layers of staggered and inclined fine through holes are formed in the side wall of the gas distribution cavity, so that airflow is sprayed to the side wall of the airflow filling cavity on the window surface and forms an acute angle with the window surface; the tiny through holes on the bottom wall of the gas distribution cavity comprise at least one ring of central airflow strengthening air hole and at least one ring of cyclone airflow hole which are arranged from inside to outside, the central axis of the central airflow strengthening air hole and the central axis of the window channel form a certain included angle, and the central axis of the cyclone airflow hole and the tangential direction of the ring surface of the window channel form a certain included angle.
Furthermore, the airflow flows out from at least one layer of inclined fine through hole, at least one ring of central airflow reinforcing air hole and at least one ring of cyclone airflow hole, the airflow flowing into the window channel through the window surface airflow filling cavity is converged with the airflow entering through the central airflow reinforcing air hole in the window channel, and forms cyclone airflow under the action of disturbed airflow flowing in through the cyclone airflow hole, and under the combined action of the mixing action of the cyclone airflow and the central area compensating airflow, the outlet of the window channel forms a whole-area positive pressure airflow distribution area, and an air pressure blocking area is formed on the outlet section of the window channel.
Further, at least two air inlets are distributed along the tangential direction of the cross section of the air distribution cavity, so that air flow can be swirled and fed along the tangential direction of the cross section of the air distribution cavity.
Furthermore, at least four inlet channels are communicated with the air distribution cavity, and the at least four inlet channels are uniformly distributed around the air distribution cavity.
Further, divide the air cavity to include first branch air cavity and second branch air cavity, the second branch air cavity sets up along first branch air cavity inner wall, at least one intake duct and first branch air cavity intercommunication, first branch air cavity is through a plurality of gas pockets and second branch air cavity intercommunication, second branch air cavity and window face air current fill chamber and window passageway intercommunication.
The invention also relates to a positive pressure airflow window cleaning method, which is carried out as follows:
the air flow enters at least one air distribution cavity through at least one air inlet channel, and fine through holes are distributed on the wall surfaces of different areas of the air distribution cavity, so that the air flow flows into a window channel through a window surface air flow filling cavity and enters the window channel to form central reinforced air flow;
a window surface airflow filling cavity is formed between the air dividing cavity wall and the perspective window surface, a window channel is arranged in the middle of the positive pressure airflow protection device and is communicated with the window surface airflow filling cavity, airflow enters the window surface airflow filling cavity through the fine through holes, passes through the periphery of the perspective window surface, gathers towards the middle and flows out through the window channel;
the airflow flowing into the window channel through the window surface airflow filling cavity is converged with the airflow entering through the central airflow reinforcing air hole in the window channel, and forms cyclone airflow under the action of disturbed airflow flowing in through the cyclone airflow hole, and under the combined action of the mixing action of the cyclone airflow and the central area supplement airflow, the outlet of the window channel forms a whole-area positive pressure airflow distribution area, at the moment, positive pressure difference exists between the airflow inside and outside the window channel, and an air pressure blocking area is formed on the outlet section of the window channel to block external pollutants.
Further, the air current enters the air distribution cavity along at least two tangential directions of the cross section of the air distribution cavity in a rotational flow mode, or enters the air distribution cavity through at least four air inlet channels, or enters the first air distribution cavity firstly, then enters the second air distribution cavity, and finally enters the window surface air current filling cavity and the window channel.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an effective solution for preventing the problem that the visual detection is influenced by the pollution of the detection window in severe environments such as high dust or water mist, and the like, the method realizes the miniaturization of the protective device while keeping the cleanness and no pollution of the detection window surface for a long time, and the application of the method has great significance for expanding the application environment of the visual detection technology, promoting the improvement of the visual detection quality in the severe environments, ensuring the reliability of the visual detection and the like.
The invention has a plurality of outstanding substantive characteristics in structure, particularly:
1. the window surface blowing holes are uniformly arranged along the circumferential direction of the window surface, the number of the air holes is determined according to the size of the through flow area of the window channel, and the air holes are distributed in a mode of multi-ring air hole position staggered distribution, so that the more dense air holes can be distributed under the condition of ensuring the size of the air hole space, and the purpose of meeting the requirement of the total through flow area of the air holes and uniformly distributing the air flow entering the window surface air flow filling cavity is achieved. The air holes entering the window surface air flow filling cavity from the air distribution cavity are inclined towards the side wall of the cavity rather than towards the glass surface of the window at a certain angle, so that the purpose of cleaning the window surface air flow filling cavity can be achieved, and the compressed air flow is reduced in pressure again, mixed and expanded and fills the cavity in the process of turning back and flowing.
2. The central air flow reinforcing air holes adopt a multi-ring air hole uniform distribution mode, and the blowing angles of the ring air holes are different. The arrangement is to meet the requirement that the central area of the window channel can be supplemented by uniform airflow and the requirement of uniform positive pressure kinetic energy of the central area of the window channel. The number of the air holes is determined according to the size of the flow area of the window channel.
3. The angle and the number of the cyclone airflow holes are determined according to the diameter of the window channel, and the cyclone airflow holes are used for generating rotating airflow in the window channel and achieving the purpose of uniform airflow velocity and pressure distribution at the outlet of the window channel.
4. As for the mode that the air current gets into the branch air cavity, the air current flows into in the branch air cavity with the tangential, and the air current can produce the effect of rotatory mixed packing, does benefit to and divides the even distribution of air current in the air cavity. The air current gets into in dividing the air cavity simultaneously from a plurality of positions of circumference evenly distributed, makes the high velocity of flow air region in dividing the air cavity more even and the gas flow that gets into the cavity in the moment of circumference distribution bigger like this to reach the purpose that the air current evenly distributed in dividing the air cavity. The air distribution cavity is divided into multiple stages of cavities, small holes specially arranged among the cavities are communicated, compressed air flows are distributed and decompressed through the multiple stages of cavities, and air flows which are uniformly distributed are formed in the air cavity at the bottommost layer.
5. The window channel adopts a cone structure with a small taper closing-in from inside to outside, and the structure is used for ensuring that the circumferential edge of the outlet of the window channel is free from reverse air flow.
Drawings
FIG. 1 is a schematic view of a window protection device according to the present invention;
FIG. 2 is a schematic view of the swirl flow admission mode of the present invention;
FIG. 3 is a schematic view of the parallel air intake mode of the present invention;
FIG. 4 is a schematic diagram of the distribution of air intake of the multi-stage air cavity of the present invention;
FIG. 5 is a graph showing a simulation of the velocity distribution of the gas flow in the outlet region of the present invention;
FIG. 6 is a simulation of the total pressure distribution in the outlet zone of the present invention;
FIG. 7 is a block diagram of an embodiment of the present invention;
FIG. 8 is a partial cross-sectional view of an inlet duct and a cyclone airflow aperture in accordance with an embodiment of the present invention;
FIG. 9 is a partial cross-sectional view of a central airflow enhancing vent in accordance with an embodiment of the present invention;
FIG. 10 is a diagram (first view) showing the effect of a protection test performed by installing the protection device of the present invention on a visual inspection device in the working environment of a flavoring machine in a tobacco production line;
and FIG. 11 is a diagram of the effect of the protection test (second view) performed by installing the protection device of the present invention on a visual inspection device in the working environment of a tobacco production line flavoring machine;
wherein: 1-a video device; 2-window glass; 3-window positive pressure air flow protection device; 4, an air inlet channel; 5-air separation cavity; 6-blowing holes on the surface of the window; 7-window surface airflow filling cavity; 8-cyclone airflow holes; 9-central air flow reinforcement air holes; 10-view channel.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples without making any creative effort, shall fall within the protection scope of the present application.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar terms in the present embodiments does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
Example 1
As shown in fig. 1, the positive pressure airflow window cleaning device of the present embodiment includes a positive pressure airflow protection device 3 disposed at the periphery of the window of the video apparatus 1.
As shown in fig. 1 and 2, the positive pressure gas flow protection device 3 includes two inlet channels 4, a gas distribution chamber 5, a window surface gas flow filling chamber 7 and a window channel 10. Wherein, divide 5 evenly distributed in positive pressure air current protector 3 in the air cavity, two intake ducts 4 and divide 5 intercommunications in the air cavity, it has tiny through-hole to distribute on the wall of the different region of air cavity 5, divide and form window face air current between air cavity wall and the perspective window face 2 and fill chamber 7, window passageway 10 is located 3 middle parts of positive pressure air current protector, fill chamber 7 intercommunication with window face air current, the air current gets into window face air current through tiny through-hole and fills chamber 7 and passes through around the perspective window face 2, gather together to the centre, flow out through window passageway 10.
The positive pressure airflow protection device 3 is annular, the air distribution cavity 5 is annularly arranged in the positive pressure airflow protection device 3, and the two air inlet channels 4 are distributed on the periphery of the positive pressure airflow protection device. As shown in fig. 2, in this embodiment, two air inlets 4 are distributed along the tangential direction of the cross section of the air distribution chamber, so that the air flow swirls along the tangential direction of the cross section of the air distribution chamber to enter the air.
As shown in fig. 7, 8 and 9, two layers of staggered and inclined fine through holes 6 are arranged on the side wall of the air distribution cavity 5, so that the airflow is sprayed to the side wall of the airflow filling cavity 7 on the window surface and forms an acute angle with the window surface; the tiny through holes on the bottom wall of the gas distribution cavity comprise at least one ring of central airflow strengthening air holes 9 and at least one ring of cyclone airflow holes 8 which are arranged from inside to outside, the central axis of the central airflow strengthening air holes 9 and the central axis of the window channel 10 form a certain included angle, and the central axis of the cyclone airflow holes 8 and the tangential direction of the ring surface of the window channel 10 form a certain included angle.
The airflow flows out from two layers of inclined fine through holes 6, at least one circular central airflow reinforcing air hole 9 and at least one circular cyclone airflow hole 8 simultaneously, the airflow flowing into the window channel through the window surface airflow filling cavity 7 is converged with the airflow entering through the central airflow reinforcing air hole 9 in the window channel 10, and forms cyclone airflow under the action of disturbed airflow flowing in through the cyclone airflow hole, under the combined action of the cyclone airflow and the compensation airflow in the central area, the outlet of the window channel 10 forms a whole-area positive pressure airflow distribution area, and an air pressure blocking area is formed on the outlet section of the window channel 10.
The positive pressure airflow window cleaning method of the present embodiment.
Firstly, as shown in fig. 1, a window positive pressure airflow protector 3 is installed at the periphery of a window of a video device 1 to be protected, and the window positive pressure airflow protector is closely attached to the surface of a perspective window, so that airflow entering the protector can only flow out from a window channel outlet of the protector.
Secondly, an air inlet channel 4, an air distribution cavity 5, a window surface air flow filling cavity 7 and a window channel 10 are arranged in the window positive pressure air flow protection device 3. On the wall surface of different areas of the air-distributing cavity 5 are distributed fine through holes designed for realizing different functions, such as a window surface blowing hole 6, a cyclone airflow hole 8 and a central airflow strengthening air hole 9 in the figure. In order to ensure that the airflow is distributed in the air distribution chamber 5 as uniformly as possible, the air intake mode can adopt a rotational flow air intake mode along the tangential direction of the section of the air distribution chamber 5 as shown in fig. 2.
When external compressed air flow enters the air distribution cavity 5 through the air passage, the compressed air is decompressed and expanded in the air distribution cavity 5, and then most of the air flow enters the window surface air flow filling cavity 7 through the window surface blowing holes 6; a part of gas enters the window channel 10 through the central gas flow strengthening air hole 9; a further portion of the gas enters the viewing window channel 10 through the cyclonic airflow aperture 8.
The gas entering the window surface gas flow filling chamber 7 will here again undergo decompression expansion and then flow into the window channel 10, while a part of the gas flow will flow along the window surface in accordance with the coanda effect, so that the window surface is cleaned by the flowing gas. The airflow flowing into the window channel 10 through the window surface airflow filling cavity 7 is merged with the airflow entering through the central airflow enhancing air hole 9 in the window channel 10 and forms cyclone airflow under the action of the disturbed airflow flowing in through the cyclone airflow hole 8. Under the combined action of the mixing action of the cyclone airflow and the complementary airflow in the central area, the outlet of the window channel 10 forms a full-area positive pressure airflow distribution area, the wind speed distribution is as shown in fig. 5, the airflow speed direction at the outlet of the window channel is spirally outward, the maximum flow speed reaches 3.264m/s in the area close to the edge of the outlet, the flow speed reaches 1m/s in the central area of the outlet, and no inward backflow airflow occurs in the outlet. The total pressure distribution is shown in fig. 6, and it can be seen that the total pressure value of the whole area of the outlet section of the window channel is positive and straight relative to the external air pressure, the maximum pressure is 7.55Pa, the pressure of the central area of the outlet is 0.157 Pa, and no negative pressure area appears. At this time, because of the positive pressure difference between the air flow inside and outside the window channel, an air pressure blocking area is formed on the outlet section of the window channel 10, and external pollutants such as dust or water mist and the like are difficult to enter the window channel, thereby achieving the purpose of protecting the window surface.
In this embodiment, the window positive pressure air flow protection device 3 is designed into a cone shape, the window glass 2 is installed on the window positive pressure air flow protection device 3, and the window positive pressure air flow protection device 3 is integrally installed at the detection end of the video device 1. The external air flow enters the air inlet channel 4 through the quick-insertion interface, the air inlet channel 4 is designed into a tangential symmetrical air inlet mode as shown in fig. 8, the air flow can form rotary mixed flow in the air distribution cavity 5 through the design, then most of the air flow enters the window surface air flow filling cavity 7 through the window surface blowing holes 6 as shown in fig. 7, and then the air flow can flow along the window glass surface and the cavity wall surface and enter the window channel 10.
The airflow entering from the window surface airflow filling cavity 7 and the airflow entering through the central airflow enhancing air hole 9 are combined in the window channel 10 and form cyclone airflow under the action of the airflow entering through the cyclone airflow holes 8 shown in fig. 8, and finally form a full-area positive pressure airflow distribution area at the outlet area of the window channel 10.
The central airflow enhancing air holes 9 in this embodiment are designed as two inclined holes arranged in a ring and forming a certain angle with the central axis of the window channel 10 as shown in fig. 9, so as to ensure that both the airflow and the kinetic energy in the central area of the window channel 10 can be enhanced. The number of the cyclone air flow holes 8 and the central air flow reinforcement holes 9 arranged on the wall surface of the window channel 10 is matched with the size of the window channel 10.
In this embodiment, as shown in fig. 1, the blowing holes 6 on the window surface are uniformly arranged along the circumferential direction of the window surface, the number of the air holes needs to be determined according to the size of the flow area of the window channel 10, and the air holes are distributed in a multi-ring air hole position staggered manner, so that the air holes can be distributed more densely under the condition of ensuring the size of the air hole space, so as to achieve the purpose of uniformly distributing the total flow area of the air holes and the air flow entering the airflow filling cavity 7 on the window surface. The air holes entering the window surface air flow filling cavity 7 from the air distribution cavity 5 are inclined towards the side wall of the cavity rather than towards the glass surface of the window at a certain angle, so that the purpose of cleaning the window surface air flow filling cavity 7 can be achieved, and the compressed air flow is reduced in pressure again, mixed and expanded and fills the cavity in the process of turning back and flowing.
As shown in FIG. 1, the window channel 10 is formed as a cone with a small taper from the inside to the outside, which is used to ensure that the peripheral edge of the window channel outlet is free from reverse flow.
By adopting the air inlet mode shown in fig. 2, the air flow flows into the air distribution chamber 5 in a tangential direction, and the air flow can generate the effect of rotating, mixing and filling, thereby being beneficial to the uniform distribution of the air flow in the air distribution chamber 5.
As shown in fig. 8, the angle and number of the cyclone flow holes 8 are determined according to the diameter of the window channel 10, and the function is to generate a rotating airflow in the window channel 10 and achieve the purpose of uniform airflow velocity and pressure distribution at the outlet of the window channel 10.
As shown in fig. 9, the central air flow enhancing holes 9 are distributed uniformly in multiple ring holes, and the blowing angles of the ring holes are different. This arrangement is to achieve uniform airflow replenishment in the central region of the viewing window channel 10, and to achieve uniform positive pressure kinetic energy in the central region of the viewing window channel 10. The number of the air holes 9 is determined according to the size of the flow area of the window channel 10.
The size aspect is the size and the number of the air inlets, the size and the number of the small air holes distributed in each area in the cavity, the size of the air distribution cavity, the size of the airflow filling cavity of the window surface are matched with the size of the window channel, otherwise, the air flow is insufficient, and the full positive pressure protection cannot be formed.
Example 2
As shown in fig. 3, the positive pressure airflow window cleaning device of the embodiment has four air inlet channels 4 communicated with the air distribution chamber 5, wherein the four air inlet channels 4 are uniformly distributed around the air distribution chamber, and a multi-air inlet channel parallel air inlet mode is adopted. The rest is the same as in example 1.
By adopting the air inlet mode shown in fig. 3, the air flow enters the air distribution chamber 5 from a plurality of positions which are uniformly distributed in the circumferential direction, so that the high-flow-speed air flow area in the air distribution chamber 5 is more uniform in circumferential distribution and has larger instantaneous air flow entering the chamber, and the purpose of uniformly distributing the air flow in the air distribution chamber 5 is achieved.
Example 3
As shown in fig. 4, the positive pressure airflow window cleaning device of this embodiment, this embodiment adopts the multistage air cavity distribution air inlet mode (the air current gets into next level air cavity layer by layer through the intercommunicating pore of each level air cavity), specifically, the branch air cavity includes first branch air cavity 5.1 and second branch air cavity 5.2, second branch air cavity 5.2 sets up along first branch air cavity 5.1 inner wall, two intake ducts 4 and first branch air cavity 5.1 intercommunication, first branch air cavity 5.1 communicates with second branch air cavity 5.2 through a plurality of gas pockets, second branch air cavity 5.2 and window face air current fill cavity 7 and window passageway 10 intercommunication.
By adopting the air inlet mode shown in fig. 4, the air distribution cavity 5 is divided into multiple stages of cavities, the cavities at all stages are communicated by specially arranged small holes, compressed air flows through the distribution and decompression of the multiple stages of cavities, and uniformly distributed air flows are formed in the air cavity at the bottommost layer.
Examples of the applications
Fig. 10 and 11 are graphs showing the effect of the protection test performed by installing the protection device of the present invention on a visual inspection device in the working environment of a flavoring machine in a tobacco production line, wherein the production equipment has the function of adding liquid spices into tobacco shreds, and the working principle of the equipment is that the tobacco shreds are driven to roll by the rotation of a roller and then are uniformly mixed with the spices sprayed in an atomized manner. Fog is diffused in the roller during work, cigarette ash and tobacco shreds float around, and the working environment of the visual detection device is very severe. The picture is the protection condition of the visual inspection device taken after 6 hours of continuous production, and the outside of the protection device can be seen to be completely covered by cigarette ash and cut tobacco, while the inside of the window channel and the surface of the window glass are hardly polluted, and the protection effect is good.
The present invention is not limited to the above embodiments, and the arrangement of the air passages and the air holes and the shape, position and number of the air cavities in the embodiments are not limited to the illustrated spatial structural form, and may be changed according to the specific design requirements. The air inlet mode in the invention is not limited to high-pressure air, but low-pressure air can be adopted according to specific conditions, and the air supply mode can adopt an air station, an air pump or a fan and the like to provide filtered clean air. Any structural changes or improvements made by anyone in light of the above teachings are within the scope of the present invention, and any technical solutions similar or equivalent to the present invention are within the scope of the present invention.
Claims (9)
1. The utility model provides a positive pressure airflow window cleaning device which characterized in that: the device comprises a positive pressure airflow protection device arranged on the periphery of a window of a view screen device;
the positive pressure airflow protection device comprises at least one air inlet channel, at least one air distribution cavity, a window surface airflow filling cavity and a window channel, wherein the air distribution cavities are uniformly distributed in the positive pressure airflow protection device, the at least one air inlet channel is communicated with the at least one air distribution cavity, fine through holes are distributed on the wall surfaces of different areas of the air distribution cavities, the window surface airflow filling cavity is formed between the air distribution cavity wall and a perspective window surface, the window channel is arranged in the middle of the positive pressure airflow protection device and is communicated with the window surface airflow filling cavity, airflow enters the window surface airflow filling cavity through the fine through holes and passes through the periphery of the perspective window surface, gathers to the middle and flows out through the window channel.
2. The positive pressure gas flow window cleaning apparatus of claim 1, wherein: the positive pressure airflow protection device is annular, the at least one air distribution cavity is annularly arranged in the positive pressure airflow protection device, and the at least one air inlet channel is distributed on the periphery of the positive pressure airflow protection device.
3. The positive pressure gas flow window cleaning apparatus of claim 1, wherein: the side wall of the gas distribution cavity is provided with two layers of staggered and inclined fine through holes, so that airflow is sprayed to the side wall of the airflow filling cavity of the window surface and forms an acute angle with the window surface; the tiny through holes on the bottom wall of the gas distribution cavity comprise at least one ring of central airflow strengthening air hole and at least one ring of cyclone airflow hole which are arranged from inside to outside, the central axis of the central airflow strengthening air hole and the central axis of the window channel form a certain included angle, and the central axis of the cyclone airflow hole and the tangential direction of the ring surface of the window channel form a certain included angle.
4. The positive pressure gas flow window cleaning apparatus of claim 3, wherein: the airflow flows out from at least one layer of inclined fine through hole, at least one ring of central airflow reinforcing air hole and at least one ring of cyclone airflow hole, the airflow flowing into the window channel through the window surface airflow filling cavity is converged with the airflow entering through the central airflow reinforcing air hole in the window channel, and forms cyclone airflow under the action of disturbed airflow flowing in through the cyclone airflow hole, and under the combined action of the mixing action of the cyclone airflow and the supplement airflow in the central area, the outlet of the window channel forms a whole-area positive pressure airflow distribution area, and an air pressure blocking area is formed on the outlet section of the window channel.
5. The positive pressure gas flow window cleaning apparatus of claim 1, wherein: at least two inlet channels are distributed along the tangential direction of the cross section of the air distribution cavity, so that air flow can swirl along the tangential direction of the cross section of the air distribution cavity to enter air.
6. The positive pressure gas flow window cleaning apparatus of claim 1, wherein: at least four inlet ducts and divide the gas chamber intercommunication, at least four inlet ducts evenly distributed divide the gas chamber around.
7. The positive pressure gas flow window cleaning apparatus of claim 1, wherein: the branch air cavity includes first branch air cavity and second branch air cavity, and the second branch air cavity sets up along first branch air cavity inner wall, at least one intake duct and first branch air cavity intercommunication, and first branch air cavity passes through a plurality of gas pockets and second branch air cavity intercommunication, and cavity and window passageway intercommunication are filled to second branch air cavity and window face air current.
8. A positive pressure airflow window cleaning method is characterized by comprising the following steps: the method comprises the following steps:
the air flow enters at least one air distribution cavity through at least one air inlet channel, and fine through holes are distributed on the wall surfaces of different areas of the air distribution cavity, so that the air flow flows into a window channel through a window surface air flow filling cavity and enters the window channel to form central reinforced air flow;
a window surface airflow filling cavity is formed between the air dividing cavity wall and the perspective window surface, a window channel is arranged in the middle of the positive pressure airflow protection device and is communicated with the window surface airflow filling cavity, airflow enters the window surface airflow filling cavity through the fine through holes, passes through the periphery of the perspective window surface, gathers towards the middle and flows out through the window channel;
the airflow flowing into the window channel through the window surface airflow filling cavity is converged with the airflow entering through the central airflow reinforcing air hole in the window channel, and forms cyclone airflow under the action of disturbed airflow flowing in through the cyclone airflow hole, and under the combined action of the mixing action of the cyclone airflow and the central area supplement airflow, the outlet of the window channel forms a whole-area positive pressure airflow distribution area, at the moment, positive pressure difference exists between the airflow inside and outside the window channel, and an air pressure blocking area is formed on the outlet section of the window channel to block external pollutants.
9. The method of claim 8, wherein: the air current enters the gas distribution cavity along at least two tangential directions of the cross section of the gas distribution cavity in a rotational flow mode, or enters the gas distribution cavity through at least four air inlet channels, or enters the first gas distribution cavity, then enters the second gas distribution cavity, and finally enters the window surface air current filling cavity and the window channel.
Priority Applications (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100313655A1 (en) * | 2009-06-12 | 2010-12-16 | Welker, Inc. | Sight glass with a flow directing assembly |
| CN202166816U (en) * | 2011-07-27 | 2012-03-14 | 山西科达自控工程技术有限公司 | Device for cleaning lens of camera |
| JP2019174645A (en) * | 2018-03-28 | 2019-10-10 | 日本電産株式会社 | Camera protection device and casting device with the same |
| CN110369397A (en) * | 2019-07-02 | 2019-10-25 | 高新兴科技集团股份有限公司 | A kind of cleaning equipment of camera |
| CN210038413U (en) * | 2019-06-06 | 2020-02-07 | 深圳超维智造科技有限公司 | Lens protection device |
-
2021
- 2021-10-27 CN CN202111256946.0A patent/CN114146998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100313655A1 (en) * | 2009-06-12 | 2010-12-16 | Welker, Inc. | Sight glass with a flow directing assembly |
| CN202166816U (en) * | 2011-07-27 | 2012-03-14 | 山西科达自控工程技术有限公司 | Device for cleaning lens of camera |
| JP2019174645A (en) * | 2018-03-28 | 2019-10-10 | 日本電産株式会社 | Camera protection device and casting device with the same |
| CN210038413U (en) * | 2019-06-06 | 2020-02-07 | 深圳超维智造科技有限公司 | Lens protection device |
| CN110369397A (en) * | 2019-07-02 | 2019-10-25 | 高新兴科技集团股份有限公司 | A kind of cleaning equipment of camera |
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