TW202108061A - Exhaust filter device including a filter chamber and an air-permeable filter body - Google Patents

Abstract

An exhaust filter device includes a filter chamber and an air-permeable filter body. The filter chamber includes an inlet port and an exhaust port. The inlet port is connected with a dust filter device and receives a to-be-filtered air flow from the dust filter device. The air-permeable filter body is arranged in the filter chamber and is provided with a plurality of mountain parts arranged at intervals on the side facing the inlet port and a plurality of valley parts respectively arranged between any two adjacent mountain parts. The air-permeable filter body divides the to-be-filtered air flow into a first air flow that directly passes through the air-permeable filter body and flows to the exhaust port, and a second air flow that flows along at least one surface of the mountain parts and valley parts and then passes through the air-permeable filter body and flows to the exhaust port.

Description

Exhaust filter device

The invention relates to an exhaust filter device, in particular to an exhaust filter device implemented with a dust filter device.

As disclosed in the patent cases of TW I409047, TW I637717, TW I637718, and CN102475523, the existing dust collection device still uses a filter 50 to filter the exhausted gas when the dust is filtered. However, it can be clearly understood from the drawings in the aforementioned patents that the filter 50 used in the prior embodiment is in the shape of a flat plate, and the filter 50 is directly disposed in an exhaust chamber 51, as shown in FIG. 9. It can be clearly understood from FIG. 9 that a side surface of the filter 50 directly faces an air inlet 511 of the exhaust chamber 51. Although a gas 60 is about to be discharged through the exhaust chamber 51, the gas 60 is still With a certain air pressure, the gas will only pass through the part of the filter 50 directly facing the air inlet 511 without being guided by external force, and the part referred to is the range 52 indicated in FIG. 9. As a result, when the gas 60 contains unfiltered fine dust, the portion of the filter 50 facing the air inlet 511 will quickly accumulate fine dust and become invalid. However, it can be seen from the foregoing that the gas 60 only passes through the part of the filter 50, resulting in that the part of the filter 50 where the gas 60 does not pass is not effectively used, which results in waste. Furthermore, if the aforementioned structure is used for industrial dust collection, the large amount of fine dust will greatly accelerate the failure time of the filter 50.

In conclusion, although there are two solutions that can solve the above-mentioned problems, the two solutions referred to still have defects that need to be improved. Furthermore, one of the two solutions is to increase the distance between the air inlet 511 and the filter 50 so that the distance between the air inlet 511 and the filter 50 is greater than the length of the long side of the filter 50 However, this solution will cause the exhaust chamber 51 to be too large, which does not meet the needs of many owners. In addition, the other of the two solutions is to provide a guide 70 between the air inlet 511 and the filter 50. As shown in FIG. 10, the guide 70 generally does not have the characteristic of allowing gas to penetrate. Although the guide member 70 can guide the gas 60, it actually only changes the position where the gas 60 passes through the filter 50. The guided gas 60 still only passes through a part of the filter 50. As shown in the ranges 53 and 54 in FIG. 10, the problem that the filter 50 is easy to be locally densely accumulated has not yet been solved. In addition, the arrangement of the guide member 70 will further cause the structure of the exhaust chamber 51 to become more complicated, and a part of the filter 50 will be blocked by the guide member 70 and not used for dust filtering.

Furthermore, although the aforementioned CN102475523A discloses a dust collection device with a self-cleaning filter, the patent actually shakes off the dust on the filter 50 by adding a vibration cleaning structure. This method can only be used when the filter 50 is a material that can generate vibrations, and cannot solve the problem that dust is easy to accumulate locally.

The main purpose of the present invention is to solve the problem that the filter equipment is prone to local dense accumulation of dust because the conventional structure does not have a wind guide design.

To achieve the above objective, the present invention provides an exhaust filter device comprising a filter chamber and a breathable filter body. The filter chamber includes an air inlet and an exhaust port. The air inlet is connected to a dust filter and receives a filter. The airflow to be filtered into the dust filter device. The air-permeable filter body is arranged in the filter chamber and has a plurality of mountain parts arranged at intervals on the side facing the air inlet, and a plurality of mountain parts are respectively arranged in the valley parts between any two adjacent ones of the mountain parts, the air-permeable filter The body causes the airflow to be filtered to be divided into a first airflow that directly penetrates the air-permeable filter body and flows toward the exhaust port, and a first airflow that flows along at least one of the mountains and valleys before penetrating the airflow. The filter body flows to the second air flow of the exhaust port.

In one embodiment, the air inlet faces the air-permeable filter body to define a projection range, and the height of one of the mountain parts located in the projection range is higher than that of the mountain parts not located in the projection range .

In one embodiment, the heights of the mountains are the same.

In one embodiment, the exhaust filter device includes a filter disposed on the side of the air-permeable filter body facing the exhaust port. Further, the filtration efficiency of the filter is above 90%.

In one embodiment, the air-permeable filter body is formed with a plurality of irregularly arranged holes.

In one embodiment, the mountains and the mountains are arranged in an MxN matrix, M is the sum of the mountains and the valleys in the same column, and N is the mountains and the valleys in the same row. To sum up, the mountains of any two adjacent rows are arranged in a staggered manner, and the mountains of any two adjacent rows are arranged in a staggered manner.

In one embodiment, each mountain portion and one of the valley portions adjacent to the mountain portion form a continuous curved surface, and the continuous curved surface is based on a sinusoidal configuration.

In an embodiment, the mountain portions are respectively a curved surface structure, and the valley portions are respectively formed by a flat surface of the air-permeable filter body.

In an embodiment, each of the mountain portions has a pyramid structure, and the valley portions have a curved surface structure.

In one embodiment, the mountain parts are each a pyramid structure, the valley parts are respectively formed by a surface of the air-permeable filter, and each mountain part and one of the valley parts adjacent to the mountain part The junction of is an arc.

According to the foregoing disclosure, compared with the conventional technology, the present invention has the following characteristics: the air-permeable filter of the present invention is provided with the mountains and the valleys on the side facing the air inlet, so that the airflow to be filtered When flowing to the air-permeable filter body, in addition to part of the direct penetration, the rest is guided by at least one of the mountains and valleys, so that when the airflow to be filtered penetrates the air-permeable filter body, the The flow range of the airflow to be filtered is no longer limited to a local area, but flows in a wider range, thereby avoiding the problem of local dense accumulation of dust. In addition, when the air-permeable filter of the present invention is used with a filter, when the airflow to be filtered penetrates the air-permeable filter, it will flow to the filter in a larger flow range, so that each of the filter The air-permeable filter can be used everywhere for filtering.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings:

Please refer to FIGS. 1 and 2, the present invention provides an exhaust filter device 10. The exhaust filter device 10 is implemented in conjunction with a dust filter device 20, and the dust filter device 20 may be a cyclonic dust filter device. In addition, the exhaust filter device 10 includes a filter chamber 11 and a gas-permeable filter body 14 provided in the filter chamber 11. The filter chamber 11 includes an air inlet 12 and an exhaust port 13. Wherein, the exhaust port 13 can be directly connected to the external space or connected to an exhaust device 30 according to the implementation. In addition, the air-permeable filter body 14 is formed with a plurality of irregularly arranged holes. For example, the air-permeable filter body 14 may be a sponge. There is a first distance 151 and a second distance 152 between the air-permeable filter body 14 and the air inlet 12 and the air outlet 13 respectively. In one embodiment, the length of the first gap 151 is shorter than the length of the long side of the air-permeable filter body 14.

Please refer to FIG. 1 again, the air-permeable filter body 14 is set as the windward side on the side facing the air inlet 12, and has a plurality of mountain parts 141, 142 arranged at intervals and plural mountain parts 141, 142 respectively. The valleys 143 and 144 between any two adjacent ones. The mountain portions 141, 142 and the valley portions 143, 144 referred to herein are defined based on the surface of the air-permeable filter body 14 facing the air inlet 12, and those with relatively high points on the aforementioned surface may be It is defined as one of the hills 141 (142), and the relatively low point in the aforementioned surface can be defined as one of the valleys 143 (144). The aforementioned relative high point does not only refer to the highest point of the aforementioned surface. In the same way, the aforementioned relative low point does not only refer to the lowest point of the aforementioned surface. Furthermore, for example, the state of the mountain parts 141 and 142 and the valley part 143 is illustrated. Please refer to FIG. 1 again. In one embodiment, the mountain portions 141 and 142 are respectively a curved surface structure, and the valley portions 143 and 144 are respectively formed on the side of the air-permeable filter body 14 facing the air inlet 12 A plane is formed. For further explanation, it can be clearly understood from the drawing in FIG. 2 that the planes forming the valleys 143 and 144 in this embodiment are the relatively low points on the side of the air-permeable filter body 14 facing the air inlet 12, and are formed The curved structures of the valleys 143 and 144 respectively form relatively high points on the side of the air-permeable filter body 14 facing the air inlet 12. Please refer to FIG. 2 again. In one embodiment, each mountain portion 141 (142) and one of the valley portions 143 (144) adjacent to the mountain portion 141 (142) form a continuous curved surface, and the continuous curved surface is based on A sinusoidal configuration, that is, the mountain portions 141 and 142 and the valley portions 143 and 144 form a wave-like structure on the side of the air-permeable filter body 14 facing the air inlet 12. Furthermore, please also refer to FIG. 3. In one embodiment, the mountain portions 141 and 142 are respectively a pyramid structure, and the valley portions 143 and 144 are respectively a curved surface structure. Please refer to FIG. 4, in an embodiment, the mountain portions 141 and 142 are respectively a pyramid structure, and the valley portions 143 and 144 are respectively formed by a plane of the air-permeable filter body 14, and each mountain portion A junction 149 between the 141 and one of the valleys 143 adjacent to the mountain 141 is an arc.

Please refer to Figures 1 and 5, in order to specifically depict the configuration of the mountains 141, 142 and the valleys 143, 144 of this embodiment, the mountains 141 are represented by color in Figure 5 or not. , 142 and the valleys 143, 144, among which, in Figure 5 herein, the uncolored ones are used as the mountains 141, 142, and the colored ones are used as the valleys 143, 144. Accordingly, it can be seen from the embodiment shown in FIG. 5 that the mountains 141, 142 and the valleys 143, 144 are arranged in an M×N matrix, and M is the mountains 141, 142 and the valleys 143 in the same column. The sum of, 144, N is the sum of the mountains 141, 142 and the valleys 143, 144 in the same line, and the mountains of any two adjacent rows (marked 145, 146 in Figure 5) 141 and 142 are arranged in a staggered manner, and the mountains 141 and 142 of any two adjacent rows (marked 147 and 148 in FIG. 5) are arranged in a staggered manner.

Please refer to FIG. 5 again. The air inlet 12 faces the air-permeable filter body 14 to define a projection range 121. The size of the projection range 121 depends on the diameter of the air inlet 12, and the projection range 121 may include multiple mountains. Section 141 and a plurality of the valley sections 143. Please refer to FIG. 6 again. In one embodiment, the height of one of the mountain parts 141 and 142 located in the projection range 121 is higher than that of the mountain parts 141 and 142 not located in the projection range 121. In addition to the foregoing, the heights of the mountains 141 and 142 of the present invention can also be the same, as shown in FIGS. 1 to 4. In addition, in one embodiment, the area of one of the mountain portions 141 and 142 located on the air-permeable filter 14 in the projection range 121 is larger than the area of the projection range 121.

Continuing, and referring to FIG. 8, when the present invention is implemented, the air inlet 12 receives an airflow to be filtered 21 flowing in from the dust filter device 20, the airflow to be filtered 21 is a high-pressure airflow, and the airflow to be filtered 21 may be the The dust filter device 20 receives a high-pressure gas and discharges it after filtering the dust. Alternatively, the air exhaust device 30 extracts the gas in the filter chamber 11 to cause the filter chamber 11 to form a negative pressure. Furthermore, although the airflow 21 to be filtered as referred to herein has been filtered by the dust filter device 20, it may still entrain tiny dust that cannot be processed by the dust filter device 20. In addition, after the airflow 21 to be filtered enters through the air inlet 12, it will flow directly to the side of the air-permeable filter body 14 where the mountains 141, 142 and the mountains 143, 144 are provided. The airflow to be filtered 21 contacts the air-permeable filter body 14 and is divided into a first airflow 211 and a second airflow 212. Specifically, the first airflow 211 directly penetrates the air-permeable filter body 14 and flows toward the exhaust port 13, and the second airflow 212 is along at least the mountain portions 141, 142 and the valley portions 143, 144. The surface of one of them flows through the air-permeable filter body 14 and flows to the exhaust port 13. Wherein, the second airflow 212 can be referred to as a diffuse airflow. The high-pressure airflow 21 to be filtered contacts one of the mountains 141, 142. Except for the part forming the first airflow 211, the rest will be The surface of the air-permeable filter body 14 diverges to the surroundings. In addition, a flow range of the second airflow 212 on the air-permeable filter body 14 is larger than the projection range 121 of the air inlet 12 facing the air-permeable filter body 14. In this way, the airflow 21 to be filtered passing through the air-permeable filter body 14 will flow in a wider range. In other words, the airflow 21 to be filtered no longer only penetrates the part of the air-permeable filter body 14, but penetrates from all parts of the air-permeable filter body 14 more evenly, so that the tiny dust entrained by the airflow 21 to be filtered is not Then, only the part of the air-permeable filter body 14 corresponding to the projection range 121 is filtered. In addition, the flow range of the second air flow 212 of the present invention is determined by the air pressure intensity of the air flow 21 to be filtered, or the length of the first gap 151 between the air-permeable filter body 14 and the air inlet 12.

Please refer to FIG. 8. In one embodiment, the exhaust filter device 10 includes a filter 16 disposed on the side of the air-permeable filter body 14 facing the exhaust port 13. The filter 16, the filter 16 is a high-efficiency particulate air filter (High-Efficiency Particulate Air, HEPA for short), the filter 16 has a filtration efficiency of more than 90%, for example, the filter 16 can be graded Implementation of E11, E12, H13, H14, U15, U16 or U17. In conclusion, during the implementation of this embodiment, the side surface of the filter 16 facing the air-permeable filter body 14 does not receive the first airflow 211 and the second airflow 212 at a single point, but is slightly equal to the first airflow. The area of the flow range of the second airflow 212 on the air-permeable filter body 14 receives the first airflow 211 and the second airflow 212. In this way, it is possible to reduce the problem that the filter 16 is too concentrated due to the airflow passing through, which causes dust to be concentrated in a certain place of the filter 16, and the problem of rapid failure of the filter 16 can be reduced.

In summary, it is only a preferred embodiment of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, all equal changes and modifications made in accordance with the scope of the patent application of the present invention should still belong to the present invention. The scope of patent coverage.

10: Exhaust filter device 11: filter chamber 12: Air inlet 121: projection range 13: Exhaust port 14: Breathable filter 141, 142: Mountain 143, 144: Tanibe 145, 146: OK 147, 148: column 149: Connection 151: first pitch 152: second pitch 16: filter 20: Dust filter 21: Airflow to be filtered 211: First Airflow 212: Second Air 30: Exhaust device 50: filter 51: exhaust chamber 511: air inlet 52, 53, 54: range 60: Gas 70: deflector

Figure 1 is a schematic diagram of the structure of the first embodiment of the exhaust filter device of the present invention. Fig. 2 is a schematic structural diagram of a second embodiment of the exhaust filter device of the present invention. Fig. 3 is a schematic structural diagram of a third embodiment of the exhaust filter device of the present invention. Fig. 4 is a schematic structural diagram of a fourth embodiment of the exhaust filter device of the present invention. Fig. 5 is a schematic top view of the structure of the fifth embodiment of the breathable filter body of the present invention. Fig. 6 is a schematic structural diagram of a sixth embodiment of an exhaust filter device of the present invention. Fig. 7 is a schematic diagram of the implementation of the first embodiment of the exhaust filter device of the present invention. Fig. 8 is a schematic diagram of the implementation of the seventh embodiment of the exhaust filter device of the present invention. Figure 9 is a schematic diagram of the implementation of the conventional structure (1). Figure 10 is a schematic diagram of the implementation of the conventional structure (2).

10: Exhaust filter device

11: filter chamber

12: Air inlet

121: projection range

13: Exhaust port

14: Breathable filter

141, 142: Mountain

143, 144: Tanibe

151: first pitch

152: second pitch

20: Dust filter

21: Airflow to be filtered

211: First Airflow

212: Second Air

30: Exhaust device

Claims (17)

An exhaust filter device, including: A filter chamber comprising an air inlet and an air outlet, the air inlet is connected to a dust filter device and receives an air flow to be filtered from the dust filter device; and A breathable filter is arranged in the filter chamber and has a plurality of mountain parts arranged at intervals on the side facing the air inlet and a plurality of valley parts respectively arranged between any two adjacent ones of the mountain parts, the breathable The filter body allows the airflow to be filtered to be divided into a first airflow that directly penetrates the air-permeable filter body and flows toward the exhaust port, and a first airflow that flows along at least one of the mountains and valleys before passing through the airflow. The second wind flow from the air-permeable filter body to the exhaust port. The exhaust filter device according to claim 1, wherein the air inlet faces the air-permeable filter body to define a projection range, and the height of one of the mountain parts within the projection range is higher than the height of the mountain parts Those who are not within the projection range. The exhaust filter device according to claim 1, wherein the heights of the mountains are the same. According to claim 1, 2 or 3, the exhaust filter device includes a filter provided on the side of the air-permeable filter body facing the exhaust port. The exhaust filter device according to claim 4, wherein the filter efficiency of the filter is 90% or more. The exhaust filter device according to claim 4, wherein the air-permeable filter body is formed with a plurality of irregularly arranged holes. The exhaust filter device according to claim 4, wherein the mountains and the valleys are arranged in an MxN matrix, M is the sum of the mountains and the valleys in the same column, and N is the The sum of the mountains and the valleys, the mountains in any two adjacent rows are staggered, and the mountains in any two adjacent rows are staggered. The exhaust filter device according to claim 7, wherein each of the mountain portions and one of the valley portions of the adjacent mountain portions constitute a continuous curved surface, and the continuous curved surface is based on a sinusoidal configuration. According to the exhaust filter device of claim 7, wherein the mountain portions are respectively a curved structure, and the valley portions are respectively formed by a flat surface of the air-permeable filter body. The exhaust filter device according to claim 4, wherein each of the mountain portions and one of the valley portions of the adjacent mountain portions constitute a continuous curved surface, and the continuous curved surface is based on a sinusoidal configuration. According to claim 4, the exhaust filter device, wherein the mountain portions are respectively a curved structure, and the valley portions are respectively formed by a flat surface of the air-permeable filter body. The exhaust filter device of claim 1 or 2 or 3, wherein the mountains and the valleys are arranged in an MxN matrix, M is the sum of the mountains and the valleys in the same column, and N To sum up the mountains and valleys in the same line, the mountains in any two adjacent rows are arranged in a staggered manner, and the mountains in any two adjacent rows are arranged in a staggered manner. According to claim 1, 2 or 3, the exhaust filter device, wherein each of the mountain portions and one of the valleys of the adjacent mountain portions constitute a continuous curved surface, and the continuous curved surface is based on a sinusoidal configuration. According to claim 1, 2 or 3, the exhaust filter device, wherein the mountain portions are respectively a curved structure, and the valley portions are respectively formed by a flat surface of the air-permeable filter body. According to claim 1, 2 or 3, the exhaust filter device, wherein each of the mountains has a pyramid structure, and the valleys have a curved structure. According to claim 1 or 2 or 3, the exhaust filter device, wherein the mountain parts are each a pyramid structure, the valley parts are respectively formed by a surface of the air-permeable filter, and each mountain part The joint with one of the valleys adjacent to the mountain is an arc. The exhaust filter device according to claim 1 or 2 or 3, wherein the air-permeable filter body is formed with a plurality of irregularly arranged holes.

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