Filter, gas generator and vehicle

Abstract

The invention discloses a filter, a gas generator and a vehicle, the filter comprises a filter body, the filter body comprises a plurality of filter layers arranged along the inside and outside direction, a plurality of flow guide holes are formed in the filter layers, and at least two flow guide holes have different flow guide directions for fluid. Therefore, the flowing direction of fluid is changed when the fluid flows through the filter body, the flowing path of the fluid in the filter is lengthened, the contact time of the fluid and the filter body is prolonged, the flowing speed of the fluid in the filter is slowed down, and the heat exchange efficiency between the fluid and the filter is improved; the change of the flowing direction is also beneficial to improving the filtering effect of the filter body on impurities in the fluid, and the safety and reliability of the filter are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a filter, a gas generator and a vehicle. Background Art

[0002] The filter is one of the core components of the gas generator, and plays important roles such as cooling and residue filtering. It is particularly important in pyrotechnic gas generators. In related technologies, the filters used in pyrotechnic gas generators have poor cooling effects and poor residue filtering effects. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a filter that can improve the heat exchange efficiency between the fluid and the filter and improve the filtering effect of the filter.

[0004] A second object of the present invention is to provide a gas generator comprising the filter described in the above embodiment.

[0005] A third object of the present invention is to provide a vehicle comprising the filter or the gas generator described in the above embodiments.

[0006] The filter according to the first aspect of the present invention comprises: a filter body, wherein the filter body comprises a plurality of filter layers arranged in an inner and outer direction, wherein a plurality of guide holes are formed on the filter layers, and at least two of the guide holes have different guide directions for the fluid.

[0007] According to the filter of the embodiment of the present invention, by providing multiple filter layers, the provision of multiple guide holes on the filter layers causes the flow direction of the fluid to change when flowing through the filter body, thereby lengthening the flow path of the fluid in the filter, increasing the contact time between the fluid and the filter body, and slowing down the circulation speed of the fluid in the filter, thereby effectively reducing the fluid temperature. The change in flow direction is also beneficial to improving the filtering effect of the filter body on impurities in the fluid.

[0008] In some embodiments, a flow direction of at least one of the plurality of flow guide holes in one of the filter layers to the fluid is different from a flow direction of at least one of the plurality of flow guide holes in another of the filter layers to the fluid.

[0009] In some embodiments, the two adjacent filter layers include a first filter layer and a second filter layer, the guide holes on the first filter layer are first guide holes, the guide holes on the second filter layer are second guide holes, and the guide direction of the fluid by the first guide holes is different from that by the second guide holes.

[0010] In some embodiments, the first guide holes are configured to allow the fluid to flow counterclockwise along the tangent direction of the first filter layer after being guided through the first guide holes, and the second guide holes are configured to allow the fluid to flow clockwise along the tangent direction of the second filter layer after being guided through the second guide holes.

[0011] In some embodiments, at least two of the plurality of flow guide holes in the same filter layer have different flow guide directions for the fluid.

[0012] In some embodiments, one of the multiple guide holes of the same filter layer is configured to guide the fluid so that the fluid flows counterclockwise along the tangent direction of the filter layer, and another of the multiple guide holes of the same filter layer is configured to guide the fluid so that the fluid flows clockwise along the tangent direction of the filter layer.

[0013] In some embodiments, the flow guide hole includes: a flow hole and a flow guide member, the flow guide member is arranged around the flow hole, and the flow guide member can guide the fluid after flowing through the flow hole.

[0014] In some embodiments, one end of at least one of the guide members is connected to the counterclockwise upstream side wall of the corresponding flow hole along the filter layer, and the other end extends in a direction away from the radial center of the corresponding filter layer and toward the side where the counterclockwise downstream side wall of the corresponding filter layer is located.

[0015] In some embodiments, the width and / or height of the flow guide gradually increases along a counterclockwise direction from the upstream side wall of the filter layer toward the downstream side wall.

[0016] In some embodiments, one end of at least one of the guide members is connected to the clockwise upstream side wall of the corresponding flow hole along the filter layer, and the other end of the at least one guide member extends in a direction away from the radial center of the corresponding filter layer and toward the side where the counterclockwise downstream side wall of the corresponding filter layer is located.

[0017] In some embodiments, the width and / or height of the flow guide gradually increases along a clockwise direction from the upstream sidewall of the filter layer toward the downstream sidewall.

[0018] In some embodiments, one end of the guide member is connected to the corresponding filter layer, and the other end of the guide member abuts against the adjacent filter layer.

[0019] In some embodiments, the plurality of guide holes in the same filter layer have the same shape and / or size.

[0020] In some embodiments, at least one through hole is formed on the filter layer, and the through hole penetrates the filter layer in a radial direction of the filter layer, and the through hole is spaced apart from the guide hole.

[0021] In some embodiments, there are a plurality of the through holes and a plurality of the guide holes, and the plurality of the through holes and the plurality of the guide holes are arranged in an array.

[0022] In some embodiments, the plurality of guide holes are divided into a first guide hole group and a second guide hole group, and the first guide hole group and the second guide hole group are alternately arranged along the circumference of the filter layer.

[0023] In some embodiments, the plurality of guide holes in the first guide hole group are arranged at intervals along the axial direction of the filter layer, and the plurality of guide holes in the second guide hole group are arranged at intervals along the axial direction of the filter layer.

[0024] In some embodiments, the through holes and the guide holes of the first guide hole group are arranged alternately along the axial direction of the filter layer, and the through holes and the guide holes of the second guide hole group are arranged alternately along the axial direction of the filter layer.

[0025] In some embodiments, the through hole is a circular hole, an elliptical hole, an oblong hole or a polygonal hole.

[0026] In some embodiments, the multiple filter layers are formed by winding a sheet material.

[0027] In some embodiments, the axial length of the outermost filter layer is greater than the axial lengths of the remaining filter layers.

[0028] In some embodiments, one axial end of the outermost filter layer is flush with one axial end of the remaining filter layers, and the other axial end of the outermost filter layer extends beyond the other axial ends of the remaining filter layers.

[0029] In some embodiments, the circumferential lengths of the multiple filter layers increase sequentially from the inside to the outside.

[0030] In some embodiments, the guide holes are formed by punching the plate.

[0031] In some embodiments, the filter body is a stainless steel filter body.

[0032] The gas generator according to the second embodiment of the present invention comprises: a housing and a filter, wherein a discharge hole is formed on the housing; the filter is arranged in the housing, and the filter is the filter according to the first embodiment of the present invention.

[0033] In some embodiments, the filter further comprises a screen, wherein the screen is disposed at one end of the filter in the axial direction.

[0034] The vehicle according to the second embodiment of the present invention comprises the filter according to the first embodiment of the present invention or the gas generator according to the second embodiment of the present invention.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic diagram of a filter according to an embodiment of the present invention; Figure 2 is a schematic side view of a filter according to an embodiment of the present invention; Figure 3 is a schematic cross-sectional view of a filter according to an embodiment of the present invention; Figure 4 is a schematic diagram of the flow direction of the fluid in the filter according to an embodiment of the present invention; Figure 5 is a schematic diagram of a filter body according to an embodiment of the present invention; Figure 6 is a schematic side view of a filter body according to an embodiment of the present invention; Figure 7 yes Figure 6 Enlarged schematic diagram of the middle P region; Figure 8 yes Figure 6 Enlarged schematic diagram of the middle Q region; Fig. 9 is a schematic diagram of a gas generator according to an embodiment of the present invention.

[0037] Reference numerals: 100. Filter; 10. filter body; 11. filter layer; 12. first filter layer; 121. first flow guide hole; 122. first flow guide member; 123. first flow guide hole group; 13. second filter layer; 131. second flow guide hole; 132. second flow guide member; 133. second flow guide hole group; 14. third filter layer; 141. third flow guide hole; 142. third flow guide member; 15. through hole; 200. Gas generator; 20. Casing; 21. Screen. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 9 The filter 100 according to the embodiment of the present invention includes: a filter body 10 .

[0039] Specifically, if Figure 1-Figure 9 As shown, the filter body 10 includes a plurality of filter layers 11 arranged in an inner-outer direction, and a plurality of guide holes are formed on the filter layer 11, and at least two guide holes have different guide directions for the fluid.

[0040] Combination Figure 1-Figure 8 , the filter body 10 is formed with guide holes, which allow fluid to pass through while blocking foreign particles in the fluid. At least two guide holes are configured so that the flow directions of the fluid behind the two guide holes are different, and the flow direction of the fluid will change when passing through the guide holes. The multiple filter layers 11 are formed by winding the filter body 10, and the multiple filter layers 11 formed by the filter body 10 are arranged at intervals on one side along the radial direction of the filter body 10 toward a direction away from the center of the filter body 10. Each filter layer 11 is formed with guide holes, which allow fluid to pass through while blocking foreign particles in the fluid.

[0041] According to the filter 100 of the embodiment of the present invention, a plurality of filter layers 11 are provided. The plurality of guide holes on the filter layer 11 change the flow direction of the fluid when it flows through the filter body 10, thereby lengthening the flow path of the fluid in the filter 100, increasing the contact time between the fluid and the filter body 10, slowing down the circulation speed of the fluid in the filter 100, and improving the heat exchange efficiency between the fluid and the filter 100. The change in flow direction is also beneficial to improving the filtering effect of the filter body 10 on impurities in the fluid, avoiding the phenomenon that the fluid cannot be smoothly discharged due to blockage of the guide holes, and improving the safety and reliability of the filter 100.

[0042] According to some embodiments of the present invention, Figure 1-Figure 5 As shown, the flow direction of at least one of the multiple flow guide holes in one filter layer 11 to the fluid is different from the flow direction of at least one of the multiple flow guide holes in another filter layer 11 to the fluid.

[0043] The guide holes are configured so that the flow direction of the fluid after passing through the guide holes of the two filter layers 11 is different. The flow direction of the fluid will change when passing through the two filter layers 11, thereby lengthening the flow path of the fluid in the filter 100. The change in flow direction is beneficial to improving the filtering effect of the filter layer 11 on impurities in the fluid, avoiding the phenomenon that the fluid cannot be smoothly discharged due to blockage of the guide holes, and improving the safety and reliability of the filter 100.

[0044] According to some embodiments of the present invention, Figure 1-Figure 5As shown, two adjacent filter layers 11 include a first filter layer 12 and a second filter layer 13, the guide holes on the first filter layer 12 are first guide holes 121, and the guide holes on the second filter layer 13 are second guide holes 131. The guide direction of the fluid by the first guide holes 121 is different from that by the second guide holes 131.

[0045] Taking the two filter layers 11 adjacent to the center of the filter body 10 as an example, the filter layer 11 located at the innermost layer of the filter layer 11 body is the first filter layer 12, and the second filter layer 13 is adjacent to the first filter layer 12 along the radial direction of the filter layer 11 body. The first filter layer 12 is formed with a first guide hole 121, and the second filter layer 13 is formed with a second guide hole 131.

[0046] Therefore, the fluid guiding direction of the first guide hole 121 is different from that of the second guide hole 131. The fluid continuously changes its flow direction between two adjacent filter layers 11, and its actual path becomes longer, which increases the contact area and time between the fluid and the filter layer 11, thereby improving the filtration efficiency and helping to improve the heat exchange efficiency.

[0047] According to some embodiments of the present invention, Figure 1-Figure 5 As shown, the first flow guide holes 121 are configured to allow the fluid flowing through the first flow guide holes 121 to flow counterclockwise along the tangent direction of the first filter layer 12 , and the second flow guide holes 131 are configured to allow the fluid flowing through the second flow guide holes 131 to flow clockwise along the tangent direction of the second filter layer 13 .

[0048] The fluid flows through the first guide hole 121 and enters between the first filter layer 12 and the second filter layer 13. The fluid flows counterclockwise between the first filter layer 12 and the second filter layer 13 along the tangential direction of the first filter layer 12. The fluid flows through the second filter hole to the side of the second filter layer 13 radially away from the first filter layer 12. The flow direction of the fluid changes after passing through the second guide hole 131. The fluid flows clockwise along the tangential direction of the second filter layer 13 on the side of the second filter layer 13 away from the first filter layer 12.

[0049] Therefore, since the fluid continuously changes its flow direction between two adjacent filter layers 11, the change in flow direction forces the fluid to slow down, which helps impurities in the fluid to be filtered more easily and reduces the impact force of the fluid on the filter layer 11. The alternating flow pattern helps the fluid to be more evenly distributed on the entire filter layer 11, avoiding local overload and improving the utilization rate of the filter layer 11.

[0050] According to some embodiments of the present invention, Figure 1-Figure 5 As shown, at least two of the multiple flow guide holes of the same filter layer 11 have different flow guide directions for the fluid.

[0051] Taking the two filter layers 11 adjacent to the center of the filter body 10 as an example, the filter layer 11 located at the innermost layer of the filter layer 11 body is the first filter layer 12, and the second filter layer 13 is adjacent to the first filter layer 12 along the radial direction of the filter layer 11 body. A plurality of first guide holes 121 are formed on the first filter layer 12, and the fluid flows through the first guide holes 121 into between the first filter layer 12 and the second filter layer 13, and the fluid flows through the first guide holes 121 into between the first filter layer 12 and the second filter layer 13, wherein part of the fluid flows counterclockwise along the tangent direction of the first filter layer 12 between the first filter layer 12 and the second filter layer 13, and part of the fluid flows clockwise along the tangent direction of the first filter layer 12 between the first filter layer 12 and the second filter layer 13.

[0052] Therefore, different guide holes on the same filter layer 11 guide the fluid in different directions, and the path of the fluid becomes longer when passing through the filter layers 11, which can increase the contact time between the fluid and the filter layer 11, thereby improving the filtration efficiency.

[0053] According to some embodiments of the present invention, Figure 1-Figure 5 As shown, one of the multiple guide holes of the same filter layer 11 is configured to guide the fluid so that the fluid flows counterclockwise along the tangent direction of the filter layer 11, and another of the multiple guide holes of the same filter layer 11 is configured to guide the fluid so that the fluid flows clockwise along the tangent direction of the filter layer 11.

[0054] Taking the two filter layers 11 adjacent to the center of the filter body 10 as an example, the filter layer 11 located at the innermost layer of the filter layer 11 body is the first filter layer 12, and the second filter layer 13 is adjacent to the first filter layer 12 along the radial direction of the filter layer 11 body. The first filter layer 12 is formed with a first guide hole 121, and the second filter layer 13 is formed with a second guide hole 131. The first guide hole 121 includes a first sub-guide hole and a second sub-guide hole, and the first sub-guide hole and the second sub-guide hole are configured to make the flow direction of the fluid after flowing through the first sub-guide hole and the second sub-guide hole different, and the second guide hole 131 includes a third sub-guide hole and a fourth sub-guide hole, and the third sub-guide hole and the fourth sub-guide hole are configured to make the flow direction of the fluid after flowing through the third sub-guide hole and the fourth sub-guide hole different.

[0055] Specifically, the fluid flows through the first guide hole 121 and enters between the first filter layer 12 and the second filter layer 13. When the fluid passes through the first filter layer 12, part of the fluid flows through the first sub-guide hole, and part of the fluid flows through the second sub-guide hole, that is, part of the fluid flows counterclockwise along the tangent direction of the first filter layer 12 between the first filter layer 12 and the second filter layer 13, and part of the fluid flows clockwise along the tangent direction of the first filter layer 12 between the first filter layer 12 and the second filter layer 13. The fluid flows through the second guide hole to the side of the second filter layer 13 radially away from the first filter layer 12. After the fluid passes through the second guide hole 131, the flow direction is changed, part of the fluid flows through the third sub-guide hole, and part of the fluid flows through the fourth sub-guide hole. Part of the fluid flows clockwise along the tangent direction of the second filter layer 13 on the side of the second filter layer 13 away from the first filter layer 12, and part of the fluid flows counterclockwise along the tangent direction of the second filter layer 13 on the side of the second filter layer 13 away from the first filter layer 12.

[0056] Therefore, since the fluid changes its flow direction when flowing through the guide hole, its actual path becomes longer, which increases the contact area and time between the fluid and the filter layer 11, thereby improving the filtration efficiency and helping to improve the heat exchange efficiency. The change in flow direction forces the fluid to slow down, which helps impurities in the fluid to be filtered more easily and reduces the impact force of the fluid on the filter layer 11. The alternating flow pattern helps the fluid to be more evenly distributed on the entire filter layer 11, avoiding local overload and improving the utilization rate of the filter layer 11.

[0057] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the flow guide hole includes: a flow hole and a flow guide member, the flow guide member is arranged around the flow hole, and the flow guide member can guide the fluid after flowing through the flow hole.

[0058] The flow guide includes a first flow guide 122 and a second flow guide 132. The first flow guide hole 121 includes the first flow guide 122. In some embodiments, the first flow guide 122 is disposed on a side of the first filter layer 12 adjacent to the second filter layer 13. The second flow guide hole 131 includes the second flow guide 132. The second flow guide 132 is disposed on a side of the second filter layer 13 away from the first filter layer 12. In some embodiments, among the multiple flow guide holes of the same filter layer 11, at least some of the flow guide holes are provided with the first flow guide, and at least some of the flow guide holes are provided with the second flow guide. The flow direction of part of the fluid passing through the flow guide hole provided with the first flow guide is opposite to the flow direction of part of the fluid passing through the flow guide hole provided with the second flow guide.

[0059] Therefore, the flow hole is suitable for fluid to flow through, and the setting of the guide member is suitable for guiding the fluid to flow more smoothly in a predetermined direction when passing through the flow hole. By guiding the flow direction of the fluid by the guide member, the vortex generated when the fluid turns can be reduced, thereby reducing energy loss and helping to improve the flow efficiency of the fluid.

[0060] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, one end of at least one flow guide is connected to the counterclockwise upstream side wall of the corresponding flow hole along the filter layer 11, and the other end extends in a direction away from the radial center of the corresponding filter layer 11 and toward the side where the counterclockwise downstream side wall of the corresponding filter layer 11 is located.

[0061] Along the flow direction of the fluid, the side wall that first contacts the fluid when the fluid passes through the flow hole is the upstream side wall of the flow hole, and the side wall that contacts the fluid later is the downstream side wall of the flow hole. For example, one end of the first flow guide 122 is connected to the upstream side wall of the flow hole of the first flow guide hole 121 along the counterclockwise direction of the first filter layer 12, and the other end of the first flow guide 122 extends along the direction away from the radial center of the first filter layer 12 and toward the side where the counterclockwise downstream side wall of the first filter layer 12 is located. The flow hole penetrates the first filter layer 12 along the thickness direction of the first filter layer 12, and one end of the first flow guide 122 is suitable for connecting with the side wall that first contacts the fluid with the flow hole of the first flow guide hole 121 along the flow direction of the fluid, and the other end of the first flow guide 122 extends obliquely toward the side where the second filter layer 13 is located. The first flow guide 122 is arranged on the side of the first filter layer 12 adjacent to the second filter layer 13 along the thickness direction, and the first flow guide 122 is suitable for guiding the fluid to flow counterclockwise.

[0062] Therefore, the setting of the first guide member 122 is suitable for guiding the fluid to flow more smoothly in a predetermined direction when passing through the flow hole. By guiding the flow direction of the fluid by the guide member, the vortex generated when the fluid turns can be reduced, thereby reducing energy loss, helping to improve the flow efficiency of the fluid, and further improving the filtration efficiency and reliability of the filter 100.

[0063] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the width and / or height of the flow guide gradually increases in the counterclockwise direction from the upstream side wall toward the downstream side wall of the filter layer 11 .

[0064] As the fluid moves from the upstream sidewall to the downstream sidewall, the width and / or height of the guide member gradually increases, that is, the flow rate gradually increases when the fluid flows through the guide hole. This progressive expansion helps the fluid pass through the guide hole more smoothly and reduces turbulence and eddy currents.

[0065] Thus, the gradually enlarged design of the flow guide helps to evenly distribute the fluid, reduce the formation of local high-pressure areas, and thus reduce the pressure drop of the entire filter 100. The progressive expansion design helps to more evenly distribute the fluid on the filter layer 11, reduces the risk of local overload, reduces the possibility of clogging of the flow guide holes, and the structural setting of the flow guide helps to improve the long-term stability and reliability of the filter 100.

[0066] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, one end of at least one flow guide is connected to the clockwise upstream side wall of the corresponding flow hole along the filter layer 11, and the other end of at least one flow guide extends in a direction away from the radial center of the corresponding filter layer 11 and toward the side where the counterclockwise downstream side wall of the corresponding filter layer 11 is located.

[0067] For example, one end of the second flow guide 132 is connected to the flow hole of the second flow guide hole 131 along the clockwise upstream side wall of the second filter layer 13, and the other end of the second flow guide 132 extends in a direction away from the radial center of the second filter layer 13 and toward the side where the clockwise downstream side wall of the second filter layer 13 is located. The flow hole of the second flow guide hole 131 penetrates the second filter hole along the thickness direction of the second filter layer 13, and one end of the second flow guide 132 is connected to the side wall of the side that first contacts the fluid with the flow hole of the second flow guide hole 131 along the flow direction of the fluid, and the other end of the first flow guide 122 extends obliquely toward the side of the second filter layer 13 away from the first filter layer 12, and the second flow guide 132 is arranged on the side of the second filter layer 13 away from the first filter layer 12 along the thickness direction, and the second flow guide 132 is suitable for guiding the fluid to flow clockwise. The extension direction of the other end of the first flow guide 122 on the first filter layer 12 is opposite to the extension direction of the other end of the second flow guide 132 of the second filter layer 13.

[0068] Therefore, the setting of the second guide member 132 is suitable for guiding the fluid to flow more smoothly in a predetermined direction when passing through the flow hole. By guiding the flow direction of the fluid by the guide member, the vortex generated when the fluid turns can be reduced, thereby reducing energy loss, helping to improve the flow efficiency of the fluid, and further improving the filtration efficiency and reliability of the filter 100.

[0069] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the width and / or height of the flow guide gradually increases along the clockwise direction from the upstream side wall toward the downstream side wall of the filter layer 11 .

[0070] As the fluid moves from the upstream side wall to the downstream side wall, the width and / or height of the guide gradually increases, that is, the flow rate gradually increases when the fluid flows through the flow hole. This progressive expansion helps the fluid pass through the flow hole more smoothly and reduces turbulence and eddy currents.

[0071] Thus, the gradually enlarged design of the flow guide helps to evenly distribute the fluid, reduce the formation of local high-pressure areas, and thus reduce the pressure drop of the entire filter 100. The progressive expansion design helps to more evenly distribute the fluid on the filter layer 11, reduces the risk of local overload, and reduces the possibility of blockage of the flow holes. The structural setting of the flow guide helps to improve the long-term stability and reliability of the filter 100.

[0072] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, one end of the flow guide is connected to the corresponding filter layer 11, and the other end of the flow guide is abutted against the adjacent filter layer 11. The flow guide can ensure that the spacing between adjacent filter layers 11 is uniform in the thickness direction of the filter layer 11, so that the space between adjacent filter layers 11 is evenly distributed, thereby making the flow rate of the fluid uniform, which helps to improve the flow efficiency of the fluid, thereby improving the filtering efficiency and reliability of the filter 100.

[0073] According to some embodiments of the present invention, Figure 2-Figure 8 As shown, along the direction from the counterclockwise upstream side wall of the first filter layer 12 toward the downstream side wall, that is, along the direction from one end of the first guide member 122 connected to the side wall of the first guide hole 121 to the other end, the width and / or height of the first guide member 122 gradually increases; along the direction from the clockwise upstream side wall of the second filter layer 13 toward the downstream side wall, that is, along the direction from one end of the second guide member 132 connected to the side wall of the second guide hole 131 to the other end, the width and / or height of the second guide member 132 gradually increases.

[0074] As the fluid moves from the upstream sidewall to the downstream sidewall, the width and / or height of the guide member gradually increases, that is, the flow rate gradually increases when the fluid flows through the guide hole. This progressive expansion helps the fluid pass through the guide hole more smoothly and reduces turbulence and eddy currents.

[0075] Thus, the gradually enlarged design of the flow guide helps to evenly distribute the fluid, reduce the formation of local high-pressure areas, and thus reduce the pressure drop of the entire filter 100. The progressive expansion design helps to more evenly distribute the fluid on the filter layer 11, reduces the risk of local overload, reduces the possibility of clogging of the flow guide holes, and the structural setting of the flow guide helps to improve the long-term stability and reliability of the filter 100.

[0076] According to some embodiments of the present invention, Figure 3 As shown, the guide holes of the same filter layer 11 have the same shape, or the guide holes of the same filter layer 11 have the same size, or the guide holes of the same filter layer 11 have the same shape and size.

[0077] The flow guide holes of the same shape and size can ensure that the fluid has similar flow characteristics when passing through the same filter layer 11, so that the fluid is more evenly distributed between the filter layers 11. Since the shape and size of the flow guide holes are the same, the resistance and contact time encountered by the fluid when passing through the filter layer 11 are relatively consistent, which helps to improve the filtration efficiency. The consistency of the fluid path also helps to better filter impurities, thereby improving the overall performance of the filter 100. The flow guide holes of the same shape and size simplify the manufacturing process, reduce production costs, and improve manufacturing efficiency.

[0078] According to some embodiments of the present invention, Figure 3 As shown, at least one through hole 15 is formed on the filter layer 11 , and the through hole 15 penetrates the filter layer 11 in the radial direction of the filter layer 11 , and the through hole 15 is spaced apart from the guide hole.

[0079] The setting of the guide hole and the guide member is used to guide the fluid to flow in a specific direction, and the setting of the through hole 15 is used to assist the fluid flow and improve the filtering efficiency. The existence of the through hole 15 can assist the fluid flow, ensure that the fluid has more path options when passing through the filter layer 11, help reduce local pressure accumulation, and make the fluid distribution more uniform. The through hole 15 is set through the filter layer 11 along the thickness of the filter layer 11, and the fluid can directly penetrate from one side of the filter layer 11 to the other side, which helps the fluid to be more evenly distributed between the filter layers 11 and reduces local pressure accumulation.

[0080] Thus, the combined design of the guide holes and the through holes 15 increases the number of paths for the fluid between the filter layers 11, thereby increasing the area of ​​contact between the fluid and the filter layer 11. The presence of the through holes 15 can disperse the fluid and reduce the risk of blockage of the guide holes. Even if some of the guide holes are partially blocked, the fluid can still continue to flow through the through holes 15 to keep the filter 100 unobstructed. As an auxiliary flow path, the through holes 15 can provide redundancy. Even in the case of failure of some guide holes, the filter 100 can still maintain a high filtration efficiency and reliability. The interval setting of the guide holes and the through holes 15 helps to distribute the fluid more evenly throughout the filter layer 11, reduces the risk of local overload, and improves the utilization efficiency of the filter layer 11. The presence of the through holes 15 can assist the flow of the fluid, ensure that the fluid has more path options when passing through the filter layer 11, reduce fluid retention and local accumulation, optimize the flow path of the fluid, and improve the filtration efficiency of the filter 100.

[0081] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, there are multiple through holes 15 and multiple guide holes, and the multiple through holes 15 and the multiple guide holes are arranged in an array.

[0082] A plurality of through holes 15 and filter holes are formed on the filter body 10, and the plurality of through holes 15 and the plurality of guide holes are arranged in an array on the filter layer 11. The filter body 10 has a length direction and a width direction, and the plurality of through holes 15 and the plurality of guide holes are evenly distributed along the length direction and the width direction of the filter body 10, and the plurality of through holes 15 and the plurality of guide holes are alternately arranged along the length direction and the width direction.

[0083] Therefore, multiple through holes 15 and multiple guide holes are arranged in an array to ensure that the fluid can be distributed more evenly, reduce local pressure accumulation, ensure that the fluid flows more evenly between the filter layers 11, reduce the risk of local overload, and improve the utilization efficiency of the filter layer 11.

[0084] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, the multiple guide holes are divided into a first guide hole group 123 and a second guide hole group 133. The first guide hole group 123 and the second guide hole group 133 are arranged alternately along the circumference of the filter layer 11. The multiple guide holes of the first guide hole group 123 and the second guide hole group 133 are arranged alternately along the circumference. The fluid will experience multiple direction changes when passing through the filter layer 11, which increases the complexity of the fluid path.

[0085] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, the multiple guide holes of the first guide hole group 123 are arranged at intervals along the axial direction of the filter layer 11, and the multiple guide holes of the second guide hole group 133 are arranged at intervals along the axial direction of the filter layer 11, ensuring that the fluid has more path options when passing through the filter layer 11, reducing local fluid retention and local accumulation.

[0086] In some embodiments, the multiple guide holes of the first guide hole group 123 and the multiple guide holes of the second guide hole group 133 are staggered along the circumference of the filter layer 11; the first guide hole group 123 is composed of a plurality of first guide holes 121 arranged at intervals along the axial direction of the filter layer 11, and the second guide hole group 133 is composed of a plurality of second guide holes 131 arranged at intervals along the axial direction of the filter layer 11. The first guide hole group 123 and the second guide hole group 133 are arranged at intervals along the circumferential direction, ensuring that the fluid has more path options when passing through the filter layer 11, reducing local fluid retention and local accumulation.

[0087] According to some embodiments of the present invention, Figure 3 and Figure 5As shown, the through holes 15 and the guide holes of the first guide hole group 123 are arranged in an interlaced manner along the axial direction of the filter layer 11, and the through holes 15 and the guide holes of the second guide hole group 133 are arranged in an interlaced manner along the axial direction of the filter layer 11. The through holes 15 and the guide hole group are arranged in an interlaced manner along the axial direction, which further increases the flow path of the fluid and improves the filtration efficiency. Therefore, by providing a plurality of through holes 15 penetrating in the radial direction on the filter layer 11, and dividing the guide holes into the first guide hole group 123 and the second guide hole group 133, which are arranged in an interlaced manner along the circumferential direction, and the through holes 15 and the guide hole group are arranged in an interlaced manner along the axial direction, not only the fluid flow path is optimized and the risk of blockage is reduced, but also the interlaced arrangement design provides a redundant path, and even in the case of failure of some guide holes, the filter 100 can still maintain a high filtration efficiency and reliability.

[0088] According to some embodiments of the present invention, Figure 5 As shown, the through hole 15 is a circular hole, an elliptical hole, an oblong hole or a polygonal hole.

[0089] Through holes 15 of different shapes can be selected according to specific application requirements to achieve optimal fluid distribution and filtering effects.

[0090] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, the multi-layer filter layer 11 is formed by winding a sheet material.

[0091] That is, the multi-layer filter layer 11 is a whole, and the plate is wound to form the multi-layer filter layer 11. The plate is wound into the filter layer 11 to provide better structural strength, making the filter 100 stronger when subjected to fluid pressure. The plate winding method makes the manufacturing process of the filter 100 more flexible, and the number of layers and thickness of the plate, as well as the size and shape of the holes, can be adjusted as needed. The plate is easy to process and standardized, and the use of the plate can reduce manufacturing costs.

[0092] In some embodiments, the multiple filter layers 11 are independent of each other, each filter layer 11 forms a separate structure, and the outer filter layer 11 is sleeved on the outer peripheral side of the inner filter layer 11 .

[0093] According to some embodiments of the present invention, Figure 1 and Figure 5 As shown, the axial length of the outermost filter layer 11 is greater than the axial lengths of the remaining filter layers 11 .

[0094] The fluid flows from the inner filter layer 11 to the outer filter layer 11 along the radial direction of the filter 100 , that is, the fluid flows in a radial direction from the inside to the outside. The fluid first contacts the inner filter layer 11 in turn, and then flows out of the filter 100 after passing through the outermost filter layer 11 .

[0095] Thus, the axial length of the filter layer 11 located at the outermost layer is greater than the axial length of the filter layer 11 located at the inner layer, and the outermost filter layer 11 can provide a larger filtering area, which helps to increase the contact area between the fluid and the filter layer 11, thereby improving the filtering efficiency. The outermost filter layer 11 is used to ensure that the filter 100 has a certain flow-guiding effect in the axial direction when the fluid enters the filter 100, so as to collect the fluid in the innermost layer, so that the fluid flows through the filter layer 11 in the radial direction from the inner layer to the outer layer in sequence, and prevent the fluid from escaping directly from the outermost layer.

[0096] According to some embodiments of the present invention, Figure 1 and Figure 5 As shown, one axial end of the outermost filter layer 11 is flush with one axial end of the remaining filter layers 11 , and the other axial end of the outermost filter layer 11 extends beyond the other axial ends of the remaining filter layers 11 .

[0097] The fluid flows from inside to outside in the radial direction, and the extension of the outermost filter layer 11 can further optimize the fluid distribution and ensure that the fluid is evenly distributed on the surface of the filter layer 11. The other end of the outermost filter layer 11 in the axial direction extends to the other end of the axial direction beyond the other ends of the remaining filter layers 11 to ensure that the filter 100 has a certain flow-guiding effect in the axial direction when the fluid enters the filter 100, so as to collect the fluid in the innermost layer, so that the fluid flows through the filter layer 11 in sequence from the inner layer to the outer layer in the radial direction, and prevent the fluid from escaping directly from the outermost layer.

[0098] According to some embodiments of the present invention, Figure 3 As shown, the circumferential lengths of the multi-layer filter layers 11 increase successively from the inside to the outside.

[0099] The outermost filter layer 11 has the largest circumferential length, and the innermost filter layer 11 has the smallest circumferential length. From the inside to the outside, the circumferential length of each filter layer 11 increases successively, and the filtration area provided by each filter layer 11 also gradually increases, which helps to increase the contact area between the fluid and the filter layer 11, thereby improving the filtration efficiency.

[0100] Thus, the fluid flows radially from the inner filter layer 11 to the outer filter layer 11 , and the filter layers 11 with successively increasing circumferential lengths can further disperse the fluid, ensuring that the fluid covers the filter layers 11 more evenly during the filtration process, thereby improving the filtration efficiency of the filter 100 .

[0101] According to some embodiments of the present invention, Figure 5 As shown, the guide holes are formed by stamping a plate.

[0102] Forming the guide holes by stamping the plate can simplify the manufacturing process and improve manufacturing efficiency. The stamping process can form in one go, reducing the subsequent processing steps and reducing manufacturing costs. Thus, the guide holes are formed by stamping the plate, and the stamping process can ensure that the size and shape of each guide hole are consistent, improving the consistency of manufacturing, which helps to ensure the overall performance and reliability of the filter 100.

[0103] According to some embodiments of the present invention, the filter body 10 is a stainless steel filter body 10 .

[0104] Stainless steel has good corrosion resistance and is suitable for a variety of chemical environments, so that the filter 100 can operate stably for a long time in corrosive fluids, extending the service life of the filter 100. Stainless steel has the characteristics of high strength and can withstand high fluid pressure and mechanical stress, ensuring that the filter 100 remains structurally stable under high pressure environments. Stainless steel has good high temperature resistance and is suitable for filtering high temperature fluids, such as high temperature gases or liquids.

[0105] Therefore, the filter body 10 is a stainless steel filter body 10 and is wound to form a filter layer 11, which is beneficial to improving the overall structural strength and structural reliability of the filter 100, improving the corrosion resistance and high temperature and high pressure resistance of the filter 100, and extending the service life of the filter 100.

[0106] The gas generator 200 according to the second aspect of the present invention is as follows: Fig. 9 As shown, the gas generator 200 includes: a housing 20 and a filter 100, and a discharge hole is formed on the housing 20; the filter 100 is arranged in the housing 20, and the filter 100 is the filter 100 according to the above-mentioned first aspect embodiment of the present invention.

[0107] The housing 20 is formed with a discharge hole for discharging the filtered fluid. The housing 20 is used to accommodate the filter 100 and provide a closed working space to ensure that the fluid is discharged after being filtered inside. The filter 100 is arranged inside the housing 20. The fluid flows from the inside of the filter 100 through the multiple filter layers 11 in sequence and then flows out from the outermost filter layer 11 and is discharged from the gas generator 200 through the discharge hole of the housing 20.

[0108] According to the gas generator 200 of the embodiment of the present invention, by applying the filter 100 in the above embodiment, the gas generator 200 not only optimizes the gas flow path, reduces the risk of blockage, but also improves the overall performance and reliability of the gas generator 200.

[0109] Combination Figure 3 , Figure 4 and Fig. 9 As shown, the flow process of the fluid in the filter 100 is as follows: Taking the filter 100 including three filter layers 11 as an example, the three filter layers 11 are sequentially the first filter layer 12, the second filter layer 13 and the third filter layer 14 along the radial direction of the filter 100, the first filter layer 12 is provided with a first flow guide hole 121 and a first flow guide member 122, the second filter layer 13 is provided with a second flow guide hole 131 and a second flow guide member 132, and the third filter layer 14 is provided with a third flow guide hole 141 and a third flow guide member 142. The fluid first enters the interior of the first filter layer 12, and flows through the first filter layer 12, the second filter layer 13 and the third filter layer 14 in sequence.

[0110] Specifically, the initial position of the fluid is located on the inner side of the first filter layer 12. When the fluid starts to flow, the fluid enters between the first filter layer 12 and the second filter layer 13 through the first guide hole 121 and the through hole 15 on the first filter layer 12, and the fluid is split for the first time. Among them, part of the fluid enters between the first filter layer 12 and the second filter layer 13 through the through hole 15. Since the through hole 15 does not have a guiding function, the flow direction of this part of the fluid between the first filter layer 12 and the second filter layer 13 is uncertain. Part of the fluid flows counterclockwise, and part of the fluid flows clockwise. Part of the fluid that enters between the first filter layer 12 and the second filter layer 13 through the first guide hole 121 flows counterclockwise under the guidance of the first guide member 122. This part of the fluid merges with the counterclockwise flowing part of the fluid that enters through the through hole 15, and diffuses and merges with the clockwise flowing part of the fluid, generating several small vortices locally. The fluid as a whole completes the first confluence, and the overall flow direction of the fluid after the confluence is counterclockwise.

[0111] A small part of the fluid in the first filter layer 12 and the second filter layer 13 continues to flow counterclockwise, and a large amount of fluid begins to enter between the second filter layer 13 and the third filter layer 14 through the second guide hole 131 and the through hole 15 on the second filter layer 13, and the fluid is split for the second time, wherein the fluid passing through the through hole 15 still flows into between the second filter layer 13 and the third filter layer 14 perpendicularly to the second filter layer 13, and after flowing into between the second filter layer 13 and the third filter layer 14, clockwise and counterclockwise split occurs again, and the direction of the fluid passing through the second guide hole 131 is parallel to the tangential direction of the second filter layer 13, but because the extension direction of the second guide member 132 is opposite to the extension direction of the first guide member 122, a sudden change in the direction of the fluid occurs at the second guide member 132, generating an airflow completely opposite to that of the first guide hole, that is, clockwise flow, which greatly improves the convective heat exchange efficiency between the fluid and the filter 100, and also retains solid particles here. The fluid passing through the second flow guide hole 131 reaches between the second filter layer 13 and the third filter layer 14, and merges with the fluid flowing clockwise through the through hole 15, and diffuses and merges with the fluid flowing counterclockwise, generating small vortices locally again. The fluid as a whole completes the second confluence, and the flow direction of the fluid after the confluence rotates clockwise as a whole.

[0112] Finally, a small portion of the fluid between the second filter layer 13 and the third filter layer 14 continues to flow clockwise, and a large amount of fluid begins to enter the gap between the third filter layer 14 and the generator housing 20 through the third guide hole 141 and the through hole 15, and the flow is divided for the third time. Among them, the fluid passing through the through hole 15 still flows perpendicularly to the third filter layer 14 and flows between the third filter layer 14 and the generator housing 20. After flowing into the gap between the third filter layer 14 and the generator housing 20, the fluid is divided clockwise and counterclockwise again. The direction of the fluid passing through the third guide hole 141 is parallel to the tangential direction of the outer layer, but because the extension direction of the third guide member 142 is opposite to the extension direction of the second guide member 132, a sudden change in the direction of the fluid occurs at the third guide member 142, generating a fluid completely opposite to the second guide hole 131, that is, counterclockwise flow, which once again improves the convective heat exchange efficiency between the fluid and the filter 100, and further retains the impurity particles here. After the fluid passing through the third flow guide hole 141 reaches between the third filter layer 14 and the generator housing 20, it merges with the counterclockwise flow of the fluid passing through the through hole 15, and diffuses and merges with the clockwise flow of the fluid, and once again locally generates a small vortex, and finally merges with the fluid escaping from between the second filter layer 13 and the third filter layer 14. Since there are a large number of vortices between the second filter layer 13 and the third filter layer 14, the extended resistance is increased, so that the airflow that originally rotates counterclockwise along the filter 100 between the first filter layer 12 and the second filter layer 13 is consumed and assimilated, resulting in only a small part of the fluid from the second filter layer 13 and the third filter layer 14 to the third filter layer 14 and the generator housing 20, and the fluid completes the third confluence as a whole, and the flow direction of the fluid after the confluence is counterclockwise. After all the fluids merge, they are finally discharged radially from the exhaust hole of the housing 20 of the gas generator 200 to complete the output of the gas.

[0113] During this process, the gas completes three diversions, three confluences and two sudden changes in gas flow direction in completely opposite directions. The passing airflow has a strong disturbing effect, which causes the flow state of the gas to change from laminar flow to turbulent (or turbulent) state. The characteristics of turbulent gas such as disorder, energy consumption and diffusivity are utilized to increase the heat exchange efficiency between the high-temperature gas and the filter 100, further promoting the cooling effect of the filter 100. During the gas flow process, larger solid particles are retained in the filter 100 by the vortex, thereby achieving an excellent filtering effect of the filter 100.

[0114] According to some embodiments of the present invention, Fig. 9 As shown, the filter 100 further includes a screen plate 21 , which is arranged at one end of the filter 100 in the axial direction.

[0115] The sieve 21 usually has a smaller aperture and is used to intercept larger particles and prevent them from entering the filter 100. The sieve 21 is disposed at one end of the filter 100 and can intercept larger particles in advance and prevent them from entering the filter 100, thereby reducing the burden on the internal filter layer 11 and improving the filtering efficiency.

[0116] Therefore, the setting of the screen plate 21 can prevent large particles from directly impacting the filter layer 11, protect the internal filter layer 11 from being damaged, and extend the service life of the gas generator 200.

[0117] The vehicle according to the second embodiment of the present invention comprises the filter 100 according to the first embodiment of the present invention or the gas generator 200 according to the second embodiment of the present invention.

[0118] According to the vehicle of the embodiment of the present invention, by applying the filter 100 and the gas generator 200 in the above embodiment, the performance and reliability of the vehicle can be effectively improved, the stable operation of the vehicle can be ensured, and the service life of the vehicle can be extended.

[0119] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "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.

[0120] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present invention, a first feature "above", "above" and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature.

[0121] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0122] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filter (100), characterized in that: include: A filter body (10), the filter body (10) comprising a plurality of filter layers (11) arranged in an inner and outer direction, a plurality of flow guide holes being formed on the filter layer (11), and at least two of the flow guide holes have different flow guide directions for the fluid.

2. The filter (100) according to claim 1, characterized in that The flow direction of at least one of the plurality of flow guide holes in one of the filter layers (11) to the fluid is different from the flow direction of at least one of the plurality of flow guide holes in another of the filter layers (11) to the fluid.

3. The filter (100) according to claim 2, characterized in that: The two adjacent filter layers (11) comprise a first filter layer (12) and a second filter layer (13), the guide holes on the first filter layer (12) are first guide holes (121), and the guide holes on the second filter layer (13) are second guide holes (131). The direction in which the first flow guide hole (121) guides the fluid is different from the direction in which the second flow guide hole (131) guides the fluid.

4. The filter (100) according to claim 3, characterized in that The first flow guide holes (121) are configured so that the fluid flows counterclockwise along the tangent direction of the first filter layer (12) after being guided through the first flow guide holes (121), and the second flow guide holes (131) are configured so that the fluid flows clockwise along the tangent direction of the second filter layer (13) after being guided through the second flow guide holes (131).

5. The filter (100) according to claim 1, characterized in that At least two of the plurality of flow guide holes of the same filter layer (11) have different flow guide directions for the fluid.

6. The filter (100) according to claim 5, characterized in that One of the plurality of flow guide holes of the same filter layer (11) is configured to guide the fluid so that the fluid flows counterclockwise along the tangent direction of the filter layer (11), and another of the plurality of flow guide holes of the same filter layer (11) is configured to guide the fluid so that the fluid flows clockwise along the tangent direction of the filter layer (11).

7. The filter (100) according to any one of claims 2 to 6, characterized in that: The flow guide hole comprises: a flow hole and a flow guide member, wherein the flow guide member is arranged around the flow hole, and the flow guide member can guide the fluid flowing through the flow hole.

8. The filter (100) according to claim 7, characterized in that One end of at least one of the flow guides is connected to the counterclockwise upstream side wall of the corresponding flow hole along the filter layer (11), and the other end extends in a direction away from the radial center of the corresponding filter layer (11) and toward the side where the counterclockwise downstream side wall of the corresponding filter layer (11) is located.

9. The filter (100) according to claim 8, characterized in that Along the counterclockwise direction from the upstream side wall of the filter layer (11) toward the downstream side wall, the width and / or height of the flow guide gradually increases.

10. The filter (100) according to claim 7, characterized in that One end of at least one of the flow guides is connected to the clockwise upstream side wall of the corresponding flow hole along the filter layer (11), and the other end extends in a direction away from the radial center of the corresponding filter layer (11) and toward the side where the counterclockwise downstream side wall of the corresponding filter layer (11) is located.

11. The filter (100) according to claim 10, characterized in that Along the direction from the clockwise upstream side wall of the filter layer (11) toward the downstream side wall, the width and / or height of the flow guide gradually increases.

12. The filter (100) according to claim 7, characterized in that One end of the flow guide is connected to the corresponding filter layer (11), and the other end of the flow guide abuts against the adjacent filter layer (11).

13. The filter (100) according to claim 7, characterized in that The plurality of flow guide holes of the same filter layer (11) have the same shape and / or size.

14. The filter (100) according to claim 7, characterized in that At least one through hole (15) is formed on the filter layer (11), the through hole (15) penetrates the filter layer (11) in a radial direction of the filter layer (11), and the through hole (15) is arranged at an interval from the guide hole.

15. The filter (100) according to claim 14, characterized in that There are a plurality of through holes (15) and a plurality of flow guide holes, respectively, and the plurality of through holes (15) and the plurality of flow guide holes are arranged in an array.

16. The filter (100) according to claim 15, characterized in that The plurality of flow guide holes are divided into a first flow guide hole group (123) and a second flow guide hole group (133); the first flow guide hole group (123) and the second flow guide hole group (133) are arranged alternately along the circumference of the filter layer (11).

17. The filter (100) according to claim 16, characterized in that The plurality of guide holes of the first guide hole group (123) are arranged at intervals along the axial direction of the filter layer (11), and the plurality of guide holes of the second guide hole group (133) are arranged at intervals along the axial direction of the filter layer (11).

18. The filter (100) according to claim 17, characterized in that The through holes (15) and the guide holes of the first guide hole group (123) are arranged alternately along the axial direction of the filter layer (11), and the through holes (15) and the guide holes of the second guide hole group (133) are arranged alternately along the axial direction of the filter layer (11).

19. The filter (100) according to claim 14, characterized in that The through hole (15) is a circular hole, an elliptical hole, an oblong hole or a polygonal hole.

20. The filter (100) according to claim 1, characterized in that The multi-layer filter layer (11) is formed by winding a plate.

21. The filter (100) according to claim 20, characterized in that The axial length of the outermost filter layer (11) is greater than the axial lengths of the remaining filter layers (11).

22. The filter (100) according to claim 21, characterized in that One axial end of the outermost filter layer (11) is flush with one axial end of the remaining filter layers (11), and the other axial end of the outermost filter layer (11) extends beyond the other axial ends of the remaining filter layers (11).

23. The filter (100) according to claim 20, characterized in that From the inside to the outside, the circumferential lengths of the multiple filter layers (11) increase successively.

24. The filter (100) according to claim 20, characterized in that The guide holes are formed by punching the plate.

25. The filter (100) according to claim 1, characterized in that The filter body (10) is a stainless steel filter body (10).

26. A gas generator (200), characterized in that: include: a housing (20), wherein a discharge hole is formed on the housing (20); A filter (100), wherein the filter (100) is arranged in the housing (20), and the filter (100) is the filter (100) according to any one of claims 1 to 25.

27. The gas generator (200) according to claim 26, characterized in that Further including: A sieve plate (21), wherein the sieve plate (21) is arranged at one end of the filter (100) in the axial direction.

28. A vehicle, characterized in that: The invention comprises a filter (100) according to any one of claims 1 to 25, or a gas generator (200) according to any one of claims 26 to 27.

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