A parallel gap type air curtain isolation system

Abstract

The present invention discloses a parallel slit air curtain isolation system, comprising an air supply device, an air curtain device and an air collecting device, wherein the air supply device supplies air into the air curtain device, and the air discharged by the air curtain device is blown toward the air collecting device, wherein the air curtain device comprises an outer groove, a longitudinal guide plate A, a U-shaped guide plate and a longitudinal guide plate B, wherein an air inlet is provided at the bottom of the outer groove; the longitudinal guide plate A, the U-shaped guide plate and the longitudinal guide plate B are installed in the outer groove, and the gap between the U-shaped guide plate and the longitudinal guide plate A is the air outlet A, and the gap between the U-shaped guide plate and the longitudinal guide plate B is the air outlet B. Since the air curtain device adopts a structure of two adjacent parallel slit air outlets, the formed air curtain is thicker than a single slit, and the two air curtains will be squeezed by the air outside and gradually close together and narrow, which is beneficial to the filtering process of the air collector, and the airflow inside the two air curtains will disturb and accelerate each other, and a complete air curtain formed by the air curtain device has a good air blocking effect.

Description

Technical Field

[0001] The invention relates to the technical field of wind curtains, and in particular to a wind curtain isolation system. Background Art

[0002] The existing air curtain isolation systems on the market are not equipped with filter cloth for filtering air, so they only have the effect of air curtain isolation, but not the complete air filtration and disinfection effect. Some air curtain isolation systems are equipped with filters, but the filters can only be replaced with new ones when they are broken and repaired, and the filters can only filter large particles of dust and do not have the function of filtering viruses.

[0003] In addition, most of the existing wind curtain devices have an exhaust air hole arranged on the shell, and air is blown outward through the exhaust air hole to form a wind curtain. The wind curtain or wind curtain formed by the above structure provides incomplete kinetic energy, which has no problem with heat insulation, but has poor effect in isolating air and droplets.

[0004] For example, the State Intellectual Property Office published a patent document with a publication number of CN207674680U on July 31, 2018. The utility model provides a jet air curtain machine, including a shell, a fan, a shroud, a nozzle and a surface cooler. An air inlet and an air outlet are arranged on the shell. The fan is arranged in the shell and located between the air inlet and the air outlet. The nozzle is connected to the air outlet position on the shell. The shroud is connected between the air outlet and the air outlet duct of the fan. The airflow generated by the fan passes through the shroud and the nozzle in sequence. The surface cooler is arranged between the fan and the air inlet. The jet air curtain machine is installed above the doorway in the room. The airflow blows down from just above the doorway in the room to form an invisible wind curtain, which separates the air inside and outside the room, prevents the loss of cooling or heat in the room, and also prevents outdoor air and dust from entering the room. The nozzle adopts an inner and outer spherical design, which can be universally adjusted and the jet direction can be adjusted at will. It is simple, convenient, flexible and maneuverable, and can achieve large-angle spraying.

[0005] For another example, the State Intellectual Property Office published a patent document with publication number CN109631224A on April 16, 2019, an isolation diagnostic table based on wind curtain isolation, characterized in that it includes: a control main board, a top cover, two fan boxes, a work surface and a support frame; wherein the two ends of the top cover are respectively connected to the tops of the two fan boxes, and the bottoms of the two fan boxes are respectively connected to the left and right top surfaces of the support frame, so that a circulating air duct is formed between the top cover, the two fan boxes and the support frame; the work surface is arranged between the two fan boxes and the support frame, and there is an Strip air outlet, so that the wind in the circulating air duct forms an air curtain after passing through the strip air outlet; the fan box includes a sensor, a fan control box, a fan and a disinfection module; the sensor is electrically connected to the control mainboard; the fan control box is electrically connected to the control mainboard and the fan respectively; the sensor is used to collect PM2.5 concentration information in the air, and send the collected PM2.5 concentration information to the control mainboard; the control mainboard is used to send a control instruction to the fan control box according to the collected PM2.5 concentration information, so that the fan control box controls the rotation speed of the fan to adjust the air outlet speed of the air curtain. A circulating air duct is formed between the top cover, the two fan boxes and the support frame, specifically: the bottoms of the two fan boxes are respectively connected to the left and right top surfaces of the support frame, the top cover is mounted on the top of the two fan boxes and connects the two fan boxes, the top cover is provided with a top chamber, the fan box is provided with a middle chamber, the support frame is provided with a bottom chamber, the top chamber, the middle chamber and the bottom chamber are connected in sequence to form the circulating air duct; the top chamber is provided with an exhaust port, and the fan and the disinfection module are arranged in the middle chamber. The support frame is provided with an air duct groove connected to the bottom chamber; the strip air outlet is directly opposite to the notch of the air duct groove, so that the wind of the circulating air duct forms an air curtain after passing through the strip air outlet. In actual application, the above patented technology has the problem of uneven air flow at the air outlet, and a complete wind curtain cannot be formed, resulting in poor air barrier effect. Summary of the invention

[0006] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide a parallel gap air curtain isolation system with good air barrier effect.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A parallel gap wind curtain isolation system comprises an air supply device, an air curtain device and an air collecting device, wherein the air supply device sends air into the air curtain device, and the air discharged by the air curtain device is blown toward the air collecting device, and the air curtain device comprises an outer groove, a longitudinal guide plate A, a U-shaped guide plate and a longitudinal guide plate B, and an air inlet is provided at the bottom of the outer groove; the longitudinal guide plate A, the U-shaped guide plate and the longitudinal guide plate B are installed in the outer groove, the gap between the U-shaped guide plate and the longitudinal guide plate A is the air outlet A, the gap between the U-shaped guide plate and the longitudinal guide plate B is the air outlet B, and the air outlet A and the air outlet B are two parallel gaps; there is more than one U-shaped guide plate, and when there are more than two U-shaped guide plates, the gaps between adjacent U-shaped guide plates also constitute air outlets. For example, when there is one U-shaped guide plate, there are only two parallel slit-type air outlets; when there are two U-shaped guide plates, the gap between the two U-shaped guide plates is also an air outlet, forming a total of three air outlets. Similarly, when there are three U-shaped guide plates, four slit-type air outlets will be formed.

[0009] Furthermore, a transverse connecting plate A is provided on the top of the longitudinal guide plate A, and a transverse connecting plate B is provided on the top of the longitudinal guide plate B; the outer trough is a rectangular structure with an open top, the transverse connecting plate A is fixedly connected to the top of one side of the outer trough by screws, and the transverse connecting plate B is fixedly connected to the top of the other side of the outer trough by screws; the longitudinal guide plate A is fixedly connected to the side wall A of the U-shaped guide plate by screws, and the side wall B of the U-shaped guide plate is fixedly connected to the longitudinal guide plate B by screws.

[0010] Furthermore, the upper part of the plate surface of the longitudinal guide plate A is provided with sound-absorbing cotton, and the lower part of the plate surface of the longitudinal guide plate A is distributed with multiple air guide holes; the upper part of the plate surface of the longitudinal guide plate B is provided with sound-absorbing cotton, and the lower part of the plate surface of the longitudinal guide plate B is distributed with multiple air guide holes, the upper part of the side wall A and the upper part of the side wall B in the U-shaped guide plate and the inner surface of the top of the U-shaped guide plate are provided with sound-absorbing cotton, the lower part of the side wall A in the U-shaped guide plate is distributed with air guide holes A and the air guide holes A and the air guide holes on the guide plate A are staggered with each other, the lower part of the side wall B in the U-shaped guide plate is distributed with air guide holes B and the air guide holes B and the air guide holes on the longitudinal guide plate B are staggered with each other.

[0011] Furthermore, the tops of the two side walls of the outer groove are provided with fixing ears distributed at intervals, and the fixing ears are used to be fixedly connected to the decorative plate by screws.

[0012] Furthermore, an air filter device is provided in the air supply device or the air collection device.

[0013] Furthermore, the air collecting device includes a chassis, an air collecting hood and an exhaust fan. The lower port of the chassis is provided with an air inlet, the upper port is provided with an air outlet, and the upper port of the chassis is provided with a HEPA sub-high efficiency filter. The air filtering device includes a guide roller group, a filter cloth roll, an unwinding shaft and a cloth winding shaft. The exhaust fan is located in the air collecting hood, and the air collecting hood is installed in the chassis. The guide roller group is arranged in the chassis and on both sides outside the air collecting hood. The unwinding shaft and the cloth winding shaft are arranged in the chassis and on both sides outside the air collecting hood. The center hole of the filter cloth roll is inserted on the unwinding shaft. When one end of the filter cloth on the filter cloth roll passes around the guide roller group, the filter cloth covers the air inlet port of the air collecting hood, and one end of the filter cloth after passing around the guide roller group is fixed on the cloth winding shaft.

[0014] Furthermore, the cloth winding shaft adopts a manual mode or an electric mode; in the electric mode, it includes a stepper motor and a controller, the stepper motor is connected to the cloth winding shaft, and the controller is used to control the number of rotations of the stepper motor to control the winding amount of the filter cloth.

[0015] Furthermore, an air flow equalizing plate is provided at the air inlet port of the air collecting hood, and a plurality of long slit-type ventilation holes are distributed on the plate surface of the air flow equalizing plate.

[0016] Furthermore, the air supply device is connected to the air inlet of the air curtain device through a bell-mouth type connector. In the bell-mouth type connector, more than two left transverse guide plates are distributed on the left inner wall surface from bottom to top, and more than two right transverse guide plates are distributed on the right inner wall surface from bottom to top. The left transverse guide plates and the right transverse guide plates are staggered, and the width of the left transverse guide plates and the right transverse guide plates are both smaller than the distance between the left inner wall surface and the right inner wall surface, and larger than half of the distance between the left inner wall surface and the right inner wall surface.

[0017] Furthermore, an air pressure sensor A and an air pressure sensor B are installed in the air collecting device and the air curtain device, respectively. The air pressure sensor A and the air pressure sensor B transmit the air pressure of the air collecting device and the air curtain device to the controller, respectively. The controller performs speed control on the fan in the air supply device and the exhaust fan in the air collecting device according to the air pressure value, so as to adjust the air pressure value in the air curtain device and the air collecting device to be constant; an ultraviolet sterilization lamp is installed in the chassis.

[0018] The beneficial effects of the present invention are:

[0019] Since the wind curtain device adopts the structure of two adjacent parallel slit air outlets, the wind curtain formed is thicker than a single slit and provides greater wind energy. At the same time, according to the Bernoulli equation, the two wind curtains blown out of the adjacent parallel slit air outlet structure will be squeezed by the air on the outside and gradually close together and narrow, which is conducive to the efficient recovery and filtration of the wind collector. The airflow inside the two wind curtains will disturb and accelerate each other. The complete wind curtain formed by the wind curtain device has a good air barrier effect and is more effective in virus isolation. It can be installed on desks, office windows or epidemic prevention detection points and other places;

[0020] Since a filter assembly is added to the wind collecting device, when the filter cloth needs to be replaced, the cloth winding shaft is rotated to rotate the filter cloth roll on the unwinding shaft, and the new filter cloth unwound on the filter cloth roll covers the air inlet, and the dirty filter cloth is wound on the cloth winding shaft. The filter cloth is very convenient to replace and has the function of filtering viruses;

[0021] Since an air flow equalizing plate is provided at the air inlet port of the air collecting hood, the wind entering the air collecting hood can enter from multiple ventilation holes on the air flow equalizing plate, so as to make the wind flow through the entire filter cloth at the air inlet port of the air collecting hood as much as possible, so as to improve the filtering effect;

[0022] Since air pressure sensor A and air pressure sensor B are installed in the wind collecting device and the wind curtain device respectively, the controller performs variable speed control on the fan in the air supply device and the exhaust fan in the wind collecting device according to the air pressure values ​​transmitted by air pressure sensor A and air pressure sensor B. When the wind pressure in the wind curtain device does not reach the set value, the controller will increase the speed of the fan. Similarly, when working, the wind pressure in the wind collecting hood should be negative pressure. Only with negative pressure can it be ensured that all the wind blown out of the wind curtain device is exhausted. When the wind pressure in the wind collecting device does not meet the set value, the controller will increase the speed of the exhaust fan. When the negative pressure is too large, the speed of the exhaust fan will be reduced.

[0023] During installation, firstly fix the longitudinal guide plate A, the U-shaped guide plate, and the longitudinal guide plate B into a whole by screws and screws respectively, so that the whole can be conveniently installed into the outer tank;

[0024] Since an ultraviolet sterilization lamp is added in the air collecting hood, the flowing air can be sterilized and disinfected.

[0025] Since the left and right transverse guide plates are additionally arranged in a staggered manner in the bell-mouth type connector, airflow is blocked, so that the airflow flows in a circuitous manner, which has a certain noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described with the aid of the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other accompanying drawings according to the following drawings without creative work:

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 for Figure 1 A top view of the air curtain device shown;

[0029] Figure 3 for Figure 2 The cross-sectional view along line AA is shown;

[0030] Figure 4 for Figure 1 The structural schematic diagram of the wind collecting device shown;

[0031] Figure 5 for Figure 4 A top view of the air flow equalizing plate shown;

[0032] Figure 6 for Figure 1 The structural schematic diagram of the bell-mouth type connector shown;

[0033] Figure 7 for Figure 6 The stereogram shown.

[0034] In the figure: 1. air supply device; 2. wind curtain device; 3. air collecting device; 4. trumpet-shaped connector; 5. outer groove; 6. longitudinal guide plate A; 7. U-shaped guide plate; 8. longitudinal guide plate B; 9. air outlet A; 10. air outlet B; 11. transverse connecting plate A; 12. transverse connecting plate B; 13. screw; 14. screw; 15. side wall A; 16. screw; 17. side wall B; 18. screw; 19. sound-absorbing cotton; 20. air guide hole; 21. sound-absorbing cotton; 22. air guide hole; 23. sound-absorbing cotton; 24. air guide hole A; 25. air guide hole B; 26. fixing ear; 27. air collecting cover ; 28. Exhaust fan; 29. ​​Guide roller group; 30. Filter cloth roll; 31. Unwinding shaft; 32. Cloth winding shaft; 33. Filter cloth; 34. Stepper motor; 35. Controller; 36. Air pressure sensor A; 37. Air pressure sensor B; 38. Ultraviolet germicidal lamp; 39. HEPA sub-high efficiency filter; 40. Air flow equalizing plate; 41. Long slit ventilation holes; 42. Left inner wall; 43. Left horizontal guide plate; 44. Right inner wall; 45. Right horizontal guide plate; 46. Air inlet. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "forward", "reverse", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] like Figure 1 , 2 3, in this embodiment, a U-shaped guide plate 7 is used as an example to describe a parallel gap type wind curtain isolation system, including an air supply device 1, a wind curtain device 2 and a wind collecting device 3, the air supply device 1 is connected to the wind curtain device through a bell-shaped connector 4 2 The wind discharged from the wind curtain device 2 is blown toward the wind collecting device. The wind curtain device 2 includes an outer groove 5, a longitudinal guide plate A6, a U-shaped guide plate 7 and a longitudinal guide plate B8. The bottom of the outer groove 5 is provided with an air inlet 46. The longitudinal guide plate A6, the U-shaped guide plate 7 and the longitudinal guide plate B8 are installed in the outer groove 5. The gap between the U-shaped guide plate 7 and the longitudinal guide plate A6 is the air outlet A9, and the gap between the U-shaped guide plate 7 and the longitudinal guide plate B8 is the air outlet B10. The air outlet A9 and the air outlet B10 are two parallel gaps. The structure of two adjacent parallel slit-type air outlets of the wind curtain device forms a wind curtain that is thicker than a single slit and provides greater wind energy. At the same time, according to the Bernoulli equation, the two wind curtains blown out by the adjacent parallel slit-type air outlet structures will be squeezed by the air on the outside and gradually move closer and narrower, which is beneficial to the efficient recovery and filtration processing of the wind collecting device. The airflow inside the two wind curtains will disturb and accelerate each other to form a better isolation effect.

[0038] A transverse connecting plate A11 is provided on the top of the longitudinal guide plate A6, and the longitudinal guide plate A6 and the transverse connecting plate A11 are integrally formed. A transverse connecting plate B12 is provided on the top of the longitudinal guide plate B8, and the longitudinal guide plate B8 and the transverse connecting plate B12 are integrally formed. The outer groove 5 is a rectangular structure with an open top surface. The transverse connecting plate A11 is fixedly connected to the top of one side of the outer groove 5 by screws 13, and the transverse connecting plate B12 is fixedly connected to the top of the other side of the outer groove 5 by screws 14. The longitudinal guide plate A6 is fixedly connected to the side wall A15 of the U-shaped guide plate 7 by screws 16, and the side wall B17 of the U-shaped guide plate 7 is fixedly connected to the longitudinal guide plate B8 by screws 18. It can be seen that the longitudinal guide plate A and the transverse connecting plate A form an inverted L-shaped structure or a "7"-shaped structure. Similarly, the longitudinal guide plate B8 and the transverse connecting plate B12 also form an inverted L-shaped structure or a "7"-shaped structure, which facilitates the installation and fixation with the outer groove 5. During installation, the longitudinal guide plate A6, the U-shaped guide plate 7, and the longitudinal guide plate B8 are first fixed into a whole by screws 16 and screws 18 respectively, so that the whole can be easily installed in the outer groove 5. In addition, spacers are provided on the screws 16 and screws 18 and located in and in the air outlet A9 and the air outlet B10, so that the width of the air outlet A9 and the air outlet B10 can be ensured to be constant.

[0039] The upper part of the plate surface of the longitudinal guide plate A6 is provided with sound-absorbing cotton 19, and the lower part of the plate surface of the longitudinal guide plate A6 is provided with a plurality of air guide holes 20; the upper part of the plate surface of the longitudinal guide plate B8 is provided with sound-absorbing cotton 21, and the lower part of the plate surface of the longitudinal guide plate B8 is provided with a plurality of air guide holes 22; the upper part of the side wall A15 and the upper part of the side wall B17 of the U-shaped guide plate 7 and the inner surface of the top of the U-shaped guide plate 7 are provided with sound-absorbing cotton 23; the lower part of the side wall A15 of the U-shaped guide plate 7 is provided with air guide holes A24, and the air guide holes A24 and the air guide holes 20 on the longitudinal guide plate A6 are staggered; the lower part of the side wall B17 of the U-shaped guide plate 7 is provided with air guide holes B25, and the air guide holes B25 and the air guide holes 22 on the longitudinal guide plate B8 are staggered. This design can avoid the airflow of the corresponding air guide holes, so that the airflow flows upward along the air outlet A9 and the air outlet B10 and is discharged.

[0040] The tops of the two side walls of the outer groove 5 are provided with spaced apart fixing ears 26, which are used to be fixedly connected to the decorative plate by screws. The fixing ears 26 are added to facilitate the installation and fixation of the patent on a desk, an office window, or an epidemic prevention detection point.

[0041] like Figure 4 , 5As shown, an air filter device is provided in the air supply device or the air collection device. In this embodiment, the air filter device is installed in the wind collecting device, and the wind collecting device 3 includes a chassis 47, an air collecting hood 27 and an exhaust fan 28. The lower port of the chassis 47 is provided with an air inlet, and the upper port is provided with an air outlet. The air filter device includes a guide roller group 29, a filter cloth roll 30, an unwinding shaft 31 and a cloth winding shaft 32. The exhaust fan 28 is located in the wind collecting hood 27, and the wind collecting hood 27 is installed in the chassis 47. The guide roller group 29 is arranged in the chassis 47 and located on both sides outside the wind collecting hood 27. The unwinding shaft 31 and the cloth winding shaft 32 are arranged in the chassis 47 and located on both sides outside the wind collecting hood 27. The center hole of the filter cloth roll 30 is inserted on the unwinding shaft 31. When one end of the filter cloth 33 on the filter cloth roll 30 passes by the guide roller group 29, the filter cloth 33 covers the air inlet port of the wind collecting hood 27, and one end of the filter cloth after passing by the guide roller group 29 is fixed on the cloth winding shaft 32. The cloth winding shaft 32 adopts a manual mode or an electric mode; the present embodiment adopts the electric mode, which includes a stepper motor 34 and a controller 35. The stepper motor 34 is connected to the cloth winding shaft 32, and the controller 35 is used to control the number of rotations of the stepper motor to control the amount of filter cloth winding. When the filter cloth is dirty, the controller 35 starts the stepper motor 34 to drive the cloth winding shaft 32 to rotate a set number of times, so that the purpose of replacing the filter cloth can be achieved very conveniently.

[0042] In addition, the air pressure sensor A36 and the air pressure sensor B37 are respectively installed in the air collecting device 3 and the air curtain device 2. The air pressure sensor A36 and the air pressure sensor B37 respectively transmit the air pressure values ​​of the air collecting device 3 and the air curtain device 2 to the controller 35. The controller 35 performs speed control on the fan in the air supply device and the exhaust fan in the air collecting device according to the air pressure to adjust the air pressure value in the wind curtain device and the air collecting device to be constant. Specifically, since air pressure sensor A and air pressure sensor B are respectively installed in the wind collecting device and the wind curtain device, the controller performs speed control on the fan in the air supply device and the exhaust fan in the wind collecting device according to the air pressure transmitted by air pressure sensor A and air pressure sensor B. When the wind pressure in the wind curtain device does not reach the set value, the controller will increase the speed of the fan. Similarly, during operation, the wind pressure in the wind collecting hood should be negative pressure. Only with negative pressure can it be ensured that all the wind blown out of the wind curtain device is exhausted. When the wind pressure in the wind collecting device does not meet the set value, the controller will increase the speed of the exhaust fan. When the negative pressure is too large, the speed of the exhaust fan will be reduced.

[0043] An ultraviolet sterilizing lamp 38 is installed in the chassis 47 of the air collecting device 3, which has the function of killing germs in the airflow.

[0044] In this patent, the filter cloth 33 is melt-blown cloth, which has the function of blocking and filtering viruses. A HEPA sub-high efficiency filter 39 is provided at the upper port of the chassis 47 to perform secondary filtration on the air.

[0045] An air flow equalizing plate 40 is provided at the air inlet port of the air collecting cover 27, and a plurality of long slit-type ventilation holes 41 are distributed on the plate surface of the air flow equalizing plate 40. The wind entering the air collecting cover 27 can enter from the plurality of long slit-type ventilation holes 41 on the air flow equalizing plate 40, so as to make the wind flow through the entire filter cloth 33 area at the air inlet port of the air collecting cover 27 as much as possible, so as to improve the filtering effect.

[0046] like Figure 6 , 7 As shown, in the bell-mouth connector 4, there are more than two left transverse guide plates 43 distributed from bottom to top on the left inner wall 42, and more than two right transverse guide plates 45 distributed from bottom to top on the right inner wall 44. The left transverse guide plates 43 and the right transverse guide plates 45 are staggered, and the widths of the left transverse guide plates 43 and the right transverse guide plates 45 are both smaller than the spacing between the left inner wall 42 and the right inner wall 44, and larger than half of the spacing between the left inner wall 42 and the right inner wall 44. By using the staggered guide plates to block the airflow, the airflow is made to flow in a circuitous manner, which has a certain silencing effect.

[0047] In addition, when there are more than one U-shaped guide plate, when there are more than two U-shaped guide plates, the gaps between adjacent U-shaped guide plates also constitute air outlets. For example, when there is one U-shaped guide plate, there are only two parallel slit-type air outlets; when there are two U-shaped guide plates, the gap between the two U-shaped guide plates is also an air outlet, forming a total of three air outlets; similarly, when there are three U-shaped guide plates, four slit-type air outlets will be formed. The number of U-shaped guide plates generally does not exceed five, so the number of parallel slit-type air outlets generally does not exceed six.

[0048] In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction. Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A parallel gap wind curtain isolation system, comprising an air supply device, a wind curtain device and a wind collecting device, wherein the air supply device sends wind into the wind curtain device, and the wind discharged by the wind curtain device blows toward the wind collecting device, characterized in that: The wind curtain device comprises an outer groove, a longitudinal guide plate A, a U-shaped guide plate and a longitudinal guide plate B, wherein an air inlet is provided at the bottom of the outer groove; the longitudinal guide plate A, the U-shaped guide plate and the longitudinal guide plate B are installed in the outer groove, the gap between the U-shaped guide plate and the longitudinal guide plate A is the air outlet A, the gap between the U-shaped guide plate and the longitudinal guide plate B is the air outlet B, and the air outlet A and the air outlet B are two parallel gaps; there are more than two U-shaped guide plates, and the gaps between adjacent U-shaped guide plates also constitute air outlets; A transverse connecting plate A is provided on the top of the longitudinal guide plate A, and a transverse connecting plate B is provided on the top of the longitudinal guide plate B; the outer trough is a rectangular parallelepiped structure with an open top surface, the transverse connecting plate A is fixedly connected to the top of one side of the outer trough by screws, and the transverse connecting plate B is fixedly connected to the top of the other side of the outer trough by screws; the longitudinal guide plate A is fixedly connected to the side wall A of the U-shaped guide plate by screws, and the side wall B of the U-shaped guide plate is fixedly connected to the longitudinal guide plate B by screws; An air filter is provided in the air supply device or the air collection device.

2. The parallel gap air curtain isolation system according to claim 1 is characterized in that: The upper part of the plate surface of the longitudinal guide plate A is provided with sound-absorbing cotton, and the lower part of the plate surface of the longitudinal guide plate A is distributed with multiple air guide holes; the upper part of the plate surface of the longitudinal guide plate B is provided with sound-absorbing cotton, and the lower part of the plate surface of the longitudinal guide plate B is distributed with multiple air guide holes, the upper part of the side wall A and the upper part of the side wall B in the U-shaped guide plate and the inner surface of the top of the U-shaped guide plate are provided with sound-absorbing cotton, the lower part of the side wall A in the U-shaped guide plate is distributed with air guide holes A, and the air guide holes A and the air guide holes on the guide plate A are staggered with each other, and the lower part of the side wall B in the U-shaped guide plate is distributed with air guide holes B, and the air guide holes B and the air guide holes on the longitudinal guide plate B are staggered with each other.

3. The parallel gap air curtain isolation system according to claim 2 is characterized in that: The tops of the two side walls of the outer groove are provided with fixing ears which are distributed at intervals, and the fixing ears are used for fixing and connecting with the decorative plate by screws.

4. The parallel gap air curtain isolation system according to claim 3 is characterized in that: The air collecting device includes a chassis, an air collecting hood and an exhaust fan. The lower port of the chassis is provided with an air inlet, the upper port is provided with an air outlet, and the upper port of the chassis is provided with a HEPA sub-high efficiency filter. The air filtering device includes a guide roller group, a filter cloth roll, an unwinding shaft and a cloth winding shaft. The exhaust fan is located in the air collecting hood, and the air collecting hood is installed in the chassis. The guide roller group is arranged in the chassis and on both sides outside the air collecting hood. The unwinding shaft and the cloth winding shaft are arranged in the chassis and on both sides outside the air collecting hood. The center hole of the filter cloth roll is inserted on the unwinding shaft. When one end of the filter cloth on the filter cloth roll passes around the guide roller group, the filter cloth covers the air inlet port of the air collecting hood, and one end of the filter cloth after passing around the guide roller group is fixed on the cloth winding shaft.

5. The parallel gap air curtain isolation system according to claim 4 is characterized in that: The cloth winding shaft adopts a manual mode or an electric mode; in the electric mode, it includes a stepper motor and a controller, the stepper motor is connected to the cloth winding shaft, and the controller is used to control the number of rotations of the stepper motor to control the winding amount of the filter cloth.

6. The parallel gap air curtain isolation system according to claim 5, characterized in that: An air flow equalizing plate is arranged at the air inlet port of the air collecting cover, and a plurality of long slit-type ventilation holes are distributed on the plate surface of the air flow equalizing plate.

7. The parallel gap air curtain isolation system according to claim 6, characterized in that: The air supply device is connected to the air inlet of the air curtain device through a bell-mouth type connector. In the bell-mouth type connector, more than two left transverse guide plates are distributed on the left inner wall surface from bottom to top, and more than two right transverse guide plates are distributed on the right inner wall surface from bottom to top. The left transverse guide plates and the right transverse guide plates are staggered, and the widths of the left transverse guide plates and the right transverse guide plates are both smaller than the distance between the left inner wall surface and the right inner wall surface, and larger than half of the distance between the left inner wall surface and the right inner wall surface.

8. The parallel gap air curtain isolation system according to claim 7, characterized in that: The air collecting device and the air curtain device are respectively installed with an air pressure sensor A and an air pressure sensor B. The air pressure sensor A and the air pressure sensor B transmit the air pressure of the air collecting device and the air curtain device to the controller respectively. The controller performs speed control on the fan in the air supply device and the exhaust fan in the air collecting device according to the air pressure value to adjust the air pressure value in the air curtain device and the air collecting device to be constant. An ultraviolet sterilization lamp is installed in the chassis.

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