TWI645142B - Suspended particle capture device - Google Patents

Abstract

A suspended particle capturing device includes a connecting tube and a catching mechanism. The communication tube defines a space inside the tube for allowing air to enter and exit, and includes a horizontally extending central tube portion, and a first tube portion and a second tube portion respectively extending upward from opposite ends of the central tube portion. The first pipe portion has an air inlet, and the second pipe portion has an air outlet, and the air inlet has a height lower than the air outlet. The capturing mechanism includes a catching grid disposed in the inner space of the tube, and an adsorbing liquid attached to an outer surface of the trapping grid for adsorbing the suspended particles in the air. The pressure difference generated by the difference between the air inlet and the air outlet is driven to enter the communication tube to capture the suspended particles in the air, thereby improving the cleanliness of the air.

Description

Suspended particle capture device

The present invention relates to a capture device, and more particularly to a suspension particle capture device for capturing suspended particles in the air.

There are many floating particles floating in the air. The sources of these suspended particles may be dust, second-hand smoke, exhaust gas from automobile locomotives, or pollutants produced after the chemical industry produces. With the development of the industry, the content of suspended particulates in the atmosphere is increasing, and the gauge diameter is getting smaller and smaller. When the size of the suspended particles is as small as 10 μm or less, even as small as 2.5 μm or less, these fine suspended particles are of quality. Very light, easy to float in the air and not easy to settle, causing long-term harm. In addition, tiny suspended particles are easily infiltrated into the blood vessels of the human body by breathing, and have a serious impact on health as the blood circulates throughout the body.

There are many air filtration devices on the market that can be used to capture and filter aerosols in the air, but these devices have the disadvantages of high cost and limited use. Most of the filtering methods used in existing air filter equipment use electrostatic filters to capture suspended particles. However, the life of the electrostatic filter is limited. When too many particles are accumulated on the surface, it must be replaced, resulting in an increase in maintenance costs. If it is used outdoors, the frequency of replacement of the electrostatic filter is higher because the air quality is far worse than that in the room. In addition, in the air filter device, a micro fan or a draft motor is usually used to perform the pumping operation, and in addition to the operation, it is required to consume electric power, and the use of an open space such as an outdoor is also inefficient. Therefore, today's air filter equipment is designed to be used only in enclosed spaces such as rooms and companies. It is not suitable for capturing suspended particles in outdoor air and cannot improve the air quality of the environment. Therefore, how to improve the structural design of the air filter device so that it can be used to capture suspended particles in the atmosphere is an urgent problem to be solved.

Accordingly, it is an object of the present invention to provide an aerosol capture device that overcomes at least one of the disadvantages of the prior art.

Thus, the aerosol trapping device of the present invention is suitable for being disposed outside a building and includes a communication tube and a catching mechanism. The communication tube defines an inner space for the air to enter and exit in a flow direction, and includes a laterally extending central tube portion, and a first tube portion and an upper portion respectively extending upward from both ends of the central tube portion a second pipe portion having a surrounding pipe wall surrounding the inner space of the pipe, the inner wall surface surrounding the pipe wall recessed with a liquid collecting groove, the first pipe portion having a space for air to enter the pipe The air inlet, the second pipe portion has an air outlet for air to flow out of the inner space of the pipe, and the air inlet has a height lower than the air outlet. The capturing mechanism includes a trapping grid disposed in the tube inner space of the communicating tube and transverse to the flow direction, and an adsorbing liquid attached to an outer surface of the trapping grid for adsorbing the suspended particles in the air. The trapping grid is above the sump, and the sorbent liquid can be dripped from the trapping grid into the sump.

The utility model has the advantages that: by using the pressure difference generated by the difference between the air inlet and the air outlet due to different wind speeds, natural convection is used to drive air from the air inlet into the communication tube, and through the trapping grid and the adsorption Liquid to capture suspended particles in the air to enhance the cleanliness of the air.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2 and 3, a first embodiment of the aerosol capture device 1 of the present invention is adapted to be disposed on an outer surface of a building 5 which may be a tall building in an urban area. Or a single-family building in the suburbs. The aerosol capture device 1 comprises a communication tube 2 and a capture mechanism 3.

The communicating pipe 2 is a pipe body which is connected at both ends and defines an inner pipe space 20 located inside. The communication tube 2 includes a central tube portion 21 extending laterally and attached to the outer surface of the building 5, and a first tube portion 22 and an upper portion respectively connected to the two ends of the central tube portion 21 and extending upward. The second tube portion 23. The first tube portion 22 has an air inlet 221 with an opening facing upward and communicating with the inner space 20 of the tube. The second tube portion 23 has an air outlet 231 with an opening facing upward and communicating with the inner space 20 of the tube. The air inlet 221 The height is lower than the air outlet 231. In other variations of the first embodiment, the central tube portion 21 can be attached only to one side of the building 5 without being bent to extend to the other side. In addition, the air inlet is provided. 221 and the air outlet 231 are not necessarily disposed at the tail ends of the first pipe portion 22 and the second pipe portion 23, respectively, and may be disposed in the tubes of the first pipe portion 22 and the second pipe portion 23, respectively. On the wall, only the height relationship between the air inlet 221 and the air outlet 231 must be noted.

The central tube portion 21 includes a surrounding wall 211 surrounding the inner space 20 of the tube, and a surrounding sump 212 is recessed toward the inner wall of the inner space 20 of the tube.

It is added that the air flow in the bottom layer of the atmosphere and within one kilometer from the ground is often affected by the friction of the ground or the viscosity of the atmosphere and the wind speed changes. This distance is called the boundary layer. When the set height of the connecting pipe 2 is located in the boundary layer of the wind, the wind speed at a lower portion near the earth surface is slower than the wind speed at a height farther from the earth surface due to the frictional relationship between the wind and the ground surface. The height of the building 5 today is located in the boundary layer, and the wind speed of the building 5 is increased as the height increases, so the wind speed at the air outlet 231 is greater than the wind speed of the air inlet 221 . According to the law of Bernoulli, the pressure of the air inlet 221 is greater than the air outlet 231, and the pressure difference can allow air to enter the inner space 20 of the tube, and follow a flow direction A to advance, and finally from the out The tuyere 231 is discharged.

The capturing mechanism 3 includes a catching grid 31, an adsorbing liquid 32, a liquid supply unit 33, and a first power supply unit 34.

The trap grid 31 is disposed in the tube inner space 20 and above the liquid collection tank 212. The trap grid 31 is a mesh body perpendicular to the flow direction A, and has a plurality of staggered net rods 311 defining a plurality of grids through which air can pass in the flow direction A. 312. In other variations of the first embodiment, the catching grid 31 may also be in the shape of a comb. The net rods 311 are vertically extending and spaced apart from each other, and the gap between the nets 311 can supply air. by. In addition, the angle between the trap grid 31 and the flow direction A may also be changed. For example, the bottom edge of the trap grid 31 is swung along the flow direction A, so that the trap grid 31 is tilted to slow down. The trapping grid 31 is subjected to an impact force upon strong wind impact, so the shape of the trap grid 31 is not limited to the illustration of the first embodiment.

The sorbent liquid 32 is attached to the mesh rods 311 of the capture grid 31, and the sorbent liquid 32 can be used to capture the aerosols in the air as it passes through the grids 312 of the capture grid 31. In the first embodiment, the adsorbed liquid 32 is water.

The liquid supply unit 33 is connected to the trap grid 31 and is used to supply the adsorption liquid 32. The liquid supply unit 33 has a liquid supply member 331, a liquid storage member 332, a liquid guiding tube 333, a circulation pump 334, and a recovery tube 335.

The liquid supply member 331 is disposed in the central tube portion 21 and is connected to the trap grid 31. The liquid supply member 331 is a hollow body and can fill the tubular body of the adsorption liquid 32, and has a plurality of liquid outlet holes 336 through which the adsorption liquid 32 flows downward to the capture grid 31.

The liquid storage member 332 is a box-shaped body disposed below the central tube portion 21, and the adsorbed liquid 32 is stored therein. In the first embodiment, the liquid storage member 332 is disposed on the outer surface of the building 5, and in other variations of the first embodiment, the liquid storage member 332 can also be suspended. It is suspended below the central pipe portion 21.

The liquid guiding tube 333 is connected to the liquid storage member 332 and the liquid supply member 331. The circulation pump 334 is disposed on the liquid guiding tube 333 and is configured to extract and transport the adsorption liquid 32 in the liquid storage member 332 into the liquid supply member 331.

The recovery pipe 335 is connected between the liquid collection tank 212 and the liquid storage member 332, and is used for returning the adsorption liquid 32 collected from the trapping grid 31 in the liquid collection tank 212 to the liquid storage tank. In piece 332.

The first power supply unit 34 is a solar cell disposed on an outer surface of the building 5 and can supply electric power to the circulation pump 334. In other variations of the first embodiment, the first power supply unit 34 may also be disposed on the top floor of the building 5 or other side having a longer sunlight exposure time, and is not required to be disposed in the The vicinity of the circulation pump 334.

In the use of the aerosol trapping device 1 of the present invention, the pressure difference between the air inlet 221 and the air outlet 231 is used to allow air to enter the duct space 20 from the air inlet 221 in a natural convection manner. When the air enters the central tube portion 21 along the flow direction A and passes through the trap grid 31, the adsorbed liquid 32 attached to the surface of the net rod 311 of the trap grid 31 can absorb the suspended particles in the air. Capture and achieve the effect of filtering the air.

As the liquid supply member 331 continuously supplies the adsorption liquid 32, the adsorption liquid 32 located on the mesh rods 311 is dropped downward into the liquid collection tank 212. Since the amount of the suspended particles that can be adsorbed by each of the adsorbed liquids 32 is relatively large, the adsorbed liquid 32 collected in the collecting tank 212 can still be returned to the liquid storing member 332 through the recovery pipe 335, and The circulation pump 334 is again drawn to the liquid supply member 331, and flows through the liquid discharge holes 336 to the trap grid 31 again, and the operation of capturing the suspended particles is repeated. When the adsorbed liquid 32 is gradually soiled for long-term recycling, the user can directly remove the adsorbed liquid 32 in the liquid storage member 332, and re-inject the new adsorbed liquid 32, and the adsorption is dirty. The liquid 32 can be used for irrigating the flower buds, cleaning the road surface, and the like.

The present suspension particle capturing device 1 uses natural convection to guide air into the communication pipe 2 for filtration, and does not need to use an additional mechanical device to drive the air flow, so that the installation cost of the aerosol capture device 1 is lowered and used. It is more energy efficient and environmentally friendly. In addition, the use of water as a medium for capturing the suspended particles does not cause problems such as frequent replacement of the filter material in the conventional air filter equipment, and in addition to low maintenance costs, it can also reduce waste materials such as filters. The production. By the circulation design of the liquid supply unit 33, the adsorption liquid 32 can be repeatedly recycled, and the adsorption efficiency can be maximized.

Of course, in other variations of the first embodiment, the liquid guiding tube 333 of the liquid supply unit 33 can also directly communicate with the liquid collecting tank 212, and the adsorbing liquid in the liquid collecting tank 212. 32 is re-extracted into the liquid supply member 331. This design is not necessary to provide the liquid storage member 332 and the recovery tube 335, and the number of components required for the operation of the aerosol trapping device 1 can be reduced, and the cost of installation can be reduced.

Referring to Fig. 4, a second embodiment of the aerosol-capturing device 1 of the present invention has a configuration substantially the same as that of the first embodiment, except that the supply of the adsorbed liquid 32 is different. The capture mechanism 3 further includes a condensing unit 35 coupled to the capture grid 31, the condensing unit 35 being a thermoelectrically cooled wafer capable of reducing temperature after receiving electrical energy. The mesh rods 311 of the trapping grid 31 are made of a material having good thermal conductivity. After receiving the electric energy, the condensing unit 35 can lower the temperature of the net rods 311, and then pass through the air in the trapping grid 31. Water vapor will condense on the mesh rods 311 to form an adsorption liquid 32 (i.e., water droplets).

The second embodiment has the advantages that, in addition to capturing the suspended particles during the condensation of moisture, the water droplets formed after the condensation can continue to capture the suspended particles in the subsequently passed air, and the user does not need to The additional supply unit is simpler to assemble. In a specific implementation, the power required for the operation of the condensing unit 35 can be provided by the first power supply unit (not shown), and the absorbing liquid 32 dripping in the sump 212 due to long-term condensation. It is also possible to install an additional duct (not shown) to guide it to the outside and remove it.

Referring to FIG. 5, a third embodiment of the aerosol capture device 1 of the present invention is substantially identical in construction to the first embodiment, except that the aerosol capture device 1 further includes a first portion disposed in the communication tube 2. The air blowing mechanism 4 in the second pipe portion 23. The air extracting mechanism 4 includes a fan 41 for moving the air in the tube space 20 in the flow direction A, and a fan 41 for discharging from the air outlet port 231, and a second power supply unit 42 for supplying power to the fan 41. The second power supply unit 42 is a solar battery.

The third embodiment has the advantages that the pressure difference between the air inlet 221 and the air outlet 231 is reduced when the wind speed difference is not large or the wind is low, resulting in poor air convection. At this time, the air extracting mechanism 4 can help extract air into the communicating pipe 2, thereby improving the efficiency of air filtering.

In summary, the aerosol trapping device 1 of the present invention mainly utilizes the pressure difference generated by the difference in wind speed at the height of the natural environment to drive the air into the connecting pipe 2 for filtering. In principle, it is energy-saving and environmentally friendly, and can be applied. Open space such as outdoor. The adsorbent liquid 32 for capturing the suspended particles in the air is selected from the common water in the life and is clean and harmless in application. Further, by the water circulation design of the liquid supply unit 33, the adsorbed liquid 32 can be reused, and in addition to reducing the maintenance cost, waste can be avoided by using the consumables, and the object of the present invention can be achieved. Furthermore, the design of condensing the moisture in the air by the condensing unit 35 can further reduce the number of components required for the installation of the aerosol trapping device 1, which is more convenient and simple to use.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧ aerosol capture device

2‧‧‧Connected pipe

21‧‧‧Central Management Department

211‧‧‧ around the wall

212‧‧ ‧ sump

22‧‧‧ First Tube Department

221‧‧‧ air inlet

23‧‧‧Second Department

231‧‧‧air outlet

3‧‧‧ Capture agency

31‧‧‧Capture grid

311‧‧‧ nets

312‧‧ Grid

33‧‧‧liquid supply unit

331‧‧‧liquid supply

332‧‧‧ liquid storage parts

333‧‧‧ catheter

334‧‧‧Circular pump

335‧‧‧Recycling tube

336‧‧‧ liquid outlet

34‧‧‧First power supply unit

35‧‧‧Condensation unit

4‧‧‧Exhaust mechanism

41‧‧‧fan

42‧‧‧second power supply unit

5‧‧‧Buildings

32‧‧‧Adsorption liquid

A‧‧‧Circulation direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is an incomplete perspective view illustrating a first embodiment of the aerosol capture device of the present invention disposed in a building 2 is an incomplete front cross-sectional view illustrating a state in which a central tube portion of a communication tube of the first embodiment is mounted with a catching mechanism; FIG. 3 is a line III- along the line in FIG. An incomplete cross-sectional view of the third embodiment illustrates the state of the central tube portion of the first embodiment and a capture grid of the capture mechanism, an adsorbent liquid, and a liquid supply unit, and the first embodiment is disposed on the Figure 4 is a view similar to Figure 3 illustrating the state of the central tube portion, the capture grid and a condensing unit of a second embodiment of the aerosol trapping device of the present invention; and Figure 5 is a Referring to the view of Fig. 1, a state in which the connecting pipe and a drafting mechanism of a third embodiment of the aerosol trapping device of the present invention are installed is explained, and the third embodiment is disposed outside the building.

Claims (7)

A suspended particle trapping device suitable for being disposed outside a building and comprising: a connecting pipe defining a space inside the pipe for air to enter and exit in a flow direction, and including a laterally extending central pipe portion, and respectively a first pipe portion and a second pipe portion extending upward from both ends of the central pipe portion, the central pipe portion having a surrounding pipe wall surrounding the inner space of the pipe, the inner wall surface surrounding the pipe wall being concavely disposed a liquid collecting tank, the first pipe portion has an air inlet for allowing air to enter the inner space of the pipe, and the second pipe portion has an air outlet for allowing air to flow out of the inner space of the pipe, the air inlet having a height lower than the air outlet And a capturing mechanism comprising a trapping grid disposed in the tube inner space of the communicating tube and transverse to the flow direction, and an outer surface attached to the trapping grid for adsorbing the suspended particles in the air Adsorbing a liquid, the trapping grid is above the sump, and the absorbing liquid can be dripped from the trapping grid into the sump; wherein the capturing mechanism further comprises a connection for the capturing And a liquid supply unit for supplying the adsorption liquid, the liquid supply unit having a liquid supply member connected to the capture grid and having a plurality of liquid outlet holes for the adsorption liquid to flow out, and a storage for storing the adsorption liquid a liquid member, a liquid guiding tube connecting the liquid supply member and the liquid storage member, and a circulation pump for extracting the adsorbed liquid in the liquid storage member and flowing through the liquid guiding tube to the liquid supply member . The aerosol trapping device of claim 1, wherein the liquid supply unit further has a liquid collecting tank connected to the liquid collecting tank, and the adsorbed liquid in the liquid collecting tank flows back to the liquid storage tank. The recovery tube inside the piece. The aerosol trapping device of claim 1, wherein the capturing mechanism further comprises a first power supply unit for supplying power to the circulating pump, the first power supply unit being a solar battery. The aerosol trapping device of claim 1, wherein the capturing mechanism further comprises a condensing unit connected to the trapping grid, the condensing unit is configured to lower the temperature of the trapping grid and condense moisture in the air to form the Adsorb liquid. The aerosol trapping device of claim 4, wherein the condensing unit has a thermoelectrically cooled wafer capable of receiving electrical energy and reducing the temperature. The aerosol trapping device of claim 1, further comprising a draft mechanism disposed in the second tube portion of the communication tube, the air extracting mechanism including an air for driving the inner space of the tube to move in the flow direction, And the fan discharged from the air outlet. The aerosol trapping device of claim 6, wherein the air extracting mechanism further comprises a second power supply unit for supplying power to the fan, the second power supply unit being a solar battery.