Air purification device and laser processing system

Abstract

The utility model discloses an air purification device and a laser processing system, and relates to the technical field of air purification. The air purification device comprises a machine shell, a purification assembly, a draught fan and an air guide pipe. The machine shell is provided with a first air guide channel, and the first air guide channel is provided with a first air inlet and a first air outlet. The purification assembly is arranged on the first air guide channel; the fan is arranged in the machine shell and located at the first air outlet, the fan is provided with an air suction opening and an air blowing opening, and the air suction opening communicates with the first air guide channel; the air guide pipe is provided with a second air guide channel which is provided with an air channel inlet and an air channel outlet, the air blowing opening is opposite to the air channel inlet, and the inner diameter of the area, close to the air channel outlet, of the second air guide channel is larger than the opening size of the air blowing opening. According to the technical scheme provided by the utility model, the noise of the air purification device can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, and particularly relates to an air purification device and a laser processing system. Background Art

[0002] At present, the air purification devices on the market usually include a casing and a fan arranged in the casing for air circulation. The air is directly led out through the air outlet of the fan, or the air outlet of the fan directly guides the air to the inside of the whole machine and then overflows outward. However, the fan has a large noise during operation. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide an air purification device and a laser processing system, aiming to reduce the noise of the air purification device.

[0004] To achieve the above purpose, the air purification device proposed by the utility model includes a casing, a purification component, a fan and a duct; the casing has a first air guiding channel, and the first air guiding channel has a first air inlet and a first air outlet; the purification component is arranged in the first air guiding channel; the fan is arranged in the casing and located at the first air outlet, the fan has a suction port and a blowing port, and the suction port is communicated with the first air guiding channel; the duct has a second air guiding channel, the second air guiding channel has a duct inlet and a duct outlet, the blowing port is opposite to the duct inlet, and the inner diameter of the area of the second air guiding channel close to the duct outlet is larger than the opening size of the blowing port.

[0005] In an embodiment, the opening size of the duct inlet is smaller than the opening size of the duct outlet of the duct.

[0006] In an embodiment, along the direction from the duct inlet to the duct outlet, the inner diameter of at least part of the second air guiding channel gradually increases.

[0007] In an embodiment, at least part of the inner wall of the second air guiding channel is streamlined.

[0008] In an embodiment, an air outlet duct is arranged on the casing, the air purification device further includes an outlet pipe, one end of the duct is sleeved on one end of the air outlet duct, and the outlet pipe is sleeved on the other end of the air outlet duct and extends out of the casing.

[0009] In an embodiment, the duct includes:

[0010] A main body section, the main body section is provided with the second sub-air duct, and the second sub-air duct is provided with the duct outlet; and

[0011] An adapter section, which is connected to one end of the main section close to the blower, and has a second sub-air duct that communicates with the second one-air duct, and one end of the blower provided with the air outlet is inserted into the second sub-air duct.

[0012] In one embodiment, a buffer member is provided between the inner wall of the second sub-air duct and the outer wall of the end of the blower provided with the air outlet.

[0013] In one embodiment, the buffer member is clamped between the inner wall of the second sub-air duct and the outer wall of the end of the blower provided with the air outlet.

[0014] In one embodiment, an air overflow gap is provided between the inner wall of the second sub-air duct and the outer wall of the end of the blower provided with the air outlet, and the air overflow gap communicates with the inner cavity of the housing.

[0015] The present utility model also provides a laser processing system, which includes a laser processing device and the above-mentioned air purification device. The laser processing device has an air outlet, and the first air inlet of the air purification device is connected to the air outlet of the laser processing device through a connecting pipe; alternatively, the air purification device is arranged inside the laser processing device.

[0016] The technical solution of the present utility model is to arrange the purification component in the first air guiding channel of the housing, arrange the blower inside the housing and at the first air outlet of the first air guiding channel of the housing. The blower has a suction port and a blowing port. The suction port communicates with the first air guiding channel of the housing, and the blowing port faces the air duct inlet of the air guiding pipe. Then, the air flowing in from the first air inlet of the housing is purified by the purification component and then blown out of the housing through the blower to the guiding pipe. Finally, the air blown out of the housing is relatively clean air. By extending the distance from the blowing port of the blower to the outside of the housing through the air guiding pipe, the path of the air flow is extended, so that a certain noise reduction effect can be achieved. And by making the opening size of the blowing port of the blower smaller than the inner diameter of the area of the air guiding pipe close to the air duct outlet, the speed of the air flow is reduced when the air blown out from the blower is blown out of the housing through the air duct outlet of the air guiding pipe, thus achieving the effect of reducing noise. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0018] Figure 1Schematic diagram of the internal structure of an embodiment of the air purifier provided by the present utility model;

[0019] Figure 2 For Figure 1 The cross-sectional view at A-A in;

[0020] Figure 3 For Figure 2 The partial enlarged view at B in;

[0021] Figure 4 Top view of an embodiment of the air purifier provided by the present utility model;

[0022] Figure 5 For Figure 4 The cross-sectional view at C-C in;

[0023] Figure 6 For Figure 5 The partial enlarged view at D in;

[0024] Figure 7 Schematic diagram of the structure of an embodiment of the laser processing system provided by the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 10. Air purification device;

[0027] 100. Housing; 101. First air inlet; 102. First air outlet; 120. First installation cavity; 130. Second installation cavity; 140. Air outlet duct; 100a. First air guiding channel;

[0028] 200. Purification component;

[0029] 300. Fan; 310. Motor; 320. Impeller cover; 321. Air suction port; 322. Air blowing port;

[0030] 400. Air duct; 410. Main body section; 401. Air duct inlet; 402. Air duct outlet; 420. Connection section; 411. Second sub-air duct; 422. Second second sub-air duct; 400a. Second air guiding channel;

[0031] 500. Buffer member;

[0032] 600. Overflow air gap;

[0033] 700. Outlet pipe;

[0034] 20. Laser processing equipment; 21. Machine body; 21A. Processing cavity; 21a. Air inlet; 21b. Air outlet; 22. Laser head;

[0035] 30. Connecting pipe.

[0036] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0037] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0040] Currently, the air purification devices on the market usually include a housing and a fan for air circulation provided in the housing. The fan has a relatively large noise during operation, and the air outlet of the fan is usually provided at the air outlet of the housing. Therefore, while exhausting air from the air outlet, the noise is also discharged outside the housing.

[0041] In order to reduce the noise of the air purification device, the present utility model proposes an air purification device.

[0042] Please refer to Figure 1 and Figure 2, in an embodiment of the present utility model, the air purification device 10 includes a housing 100, a purification component 200, a fan 300, and a duct 400; the housing 100 has a first air guiding channel 100a, and the first air guiding channel 100a has a first air inlet 101 and a first air outlet 102; the purification component 200 is disposed in the first air guiding channel 100a; the fan 300 is disposed in the housing 100 and located at the first air outlet 102, the fan 300 has a suction port 321 and a blowing port 322, and the suction port 321 communicates with the first air guiding channel 100a; the duct 400 has a second air guiding channel 400a, and the second air guiding channel 400a has an air duct inlet 401 and an air duct outlet 402, the air duct inlet 401 faces the blowing port 322, and the inner diameter of the area of the second air guiding channel 400a near the air duct outlet 402 is greater than the opening size of the blowing port 322.

[0043] The housing 100 is used to protect the main components of the air purification device 10, for example, it can protect components such as the purification component 200, the fan 300, and the circuit board of the air purification device 10. The housing 100 has a first air guiding channel 100a, the first air guiding channel 100a has a first air inlet 101 and a first air outlet 102, the purification component 200 is disposed in the first air guiding channel 100a, the fan 300 is disposed in the housing 100 and located at the first air outlet 102, the suction port 321 of the fan 300 communicates with the first air guiding channel 100a, and the blowing port 322 of the fan 300 communicates with the air duct inlet 401 of the second air guiding channel 400a in the duct 400. Then, external air can enter the housing 100 from the first air inlet 101 of the housing 100, and then after being purified by the purification component 200, it can enter the fan 300 through the suction port 321 of the fan 300 and be blown into the duct 400 from the blowing port 322 of the fan 300, and then be blown out from the air duct outlet 402 of the duct 400.

[0044] Specifically, the shape of the air inlet 101 can be circular, rectangular, or other shapes, and the shape of the air outlet can be circular, rectangular, or other shapes. The fan 300 generally includes a motor 310 and an impeller. The impeller is drivingly connected to the motor 310. The motor 310 drives the impeller to rotate in the working state. Noise will be generated during the rotation of the impeller and when the motor 310 is working. By providing the duct 400 between the blowing port 322 of the fan 300 and the air outlet, on the one hand, it can guide the air flow to be blown out from the air outlet, and on the other hand, it also extends the distance from the fan 300 to the air outlet, thereby reducing the noise of the air purification device 10. The purification component 200 is disposed in the first air guiding channel 100a, which can ensure that the air flow entering from the first air inlet 101 can be purified by the purification component 200 and then blown out from the first air outlet 102, thus effectively achieving the air purification effect.

[0045] The housing 100 may also have an air outlet duct 140, and the air guide duct 400 is arranged at the air outlet duct 140. Specifically, the air duct outlet 402 of the air guide duct 400 can be communicated with the air outlet duct 140, or the air guide duct 400 is inserted into the air outlet duct 140. The air blown out from the air blowing port 322 of the fan 300 can be directly led out of the housing 100 through the air guide duct 400, or can be led out of the housing 100 through the air outlet duct 140 of the housing 100 after passing through the air duct outlet 402 of the air guide duct 400. The air guide duct 400 can be an integrally formed structure or a split-connected structure. When the air guide duct 400 is an integrally formed structure, the sealing performance of the air guide duct 400 can be enhanced, thereby reducing the risk of air leakage from the air guide duct 400.

[0046] When the air guide duct 400 is a split-connected structure, the air guide duct 400 may include a first half pipe body and a second half pipe body that are snap-connected to each other in the radial direction. Connecting ears are provided on the outer walls of the first half pipe body and the second half pipe body, and the connecting member passes through the connecting ears to achieve the connection effect between the first half pipe body and the second half pipe body. The first half pipe body and the second half pipe body are snap-connected to each other to form a second air guide channel 400a; or the air guide duct 400 may include at least two cylindrical body structures connected to each other in the air flow direction, and at least two cylindrical body structures are sleeved or flange-connected, etc. At this time, the second air guide channel 400a includes a plurality of sub-channels that are sequentially connected end to end.

[0047] The fan 300 may have a cover body 320 covering the impeller. The cover body 320 may only cover the impeller, or the cover body 320 may also cover the motor 310 of the fan 300. An air suction port 321 and an air blowing port 322 are formed on the cover body 320. On the one hand, the cover body 320 can have a certain isolation effect on the noise generated by the operation of the impeller, and on the other hand, it is also convenient to have a good guiding effect on the air flow, so as to be able to introduce the air flow into the air guide duct 400 through the air blowing port 322. Specifically, the fan 300 can be a centrifugal fan 300 or an axial flow fan 300, etc.

[0048] The shape of the air suction port 321 of the fan 300 can be circular, rectangular or other shapes, and the shape of the air blowing port 322 of the fan 300 can be circular, rectangular or other shapes. The shape of the air blowing port 322 of the fan 300 can be the same as the shape of the air duct inlet 401 of the air guide duct 400 or can be different from the shape of the air duct inlet 401 of the air guide duct 400.

[0049] The shape of the air duct inlet 401 of the air duct 400 can be circular, rectangular or other shapes. The air duct outlet 402 of the air duct 400 can be the same as or different from the shape of the air duct inlet 401 of the air duct 400. The shape of the air duct outlet 402 of the air duct 400 can be circular, rectangular or other shapes. By making the inner diameter of the area of the second air duct 400a of the air duct 400 close to the air duct outlet 402 larger than the opening size of the air outlet 322, the air flow speed when the air flow blown out from the fan 300 blows out from the air duct outlet 402 of the air duct 400 after passing through the air duct 400 is reduced, thereby reducing the noise. It should be noted that the inner diameter of the area of the second air duct 400a close to the air duct outlet 402 refers to the diameter of the area of the second air duct 400a close to the air duct outlet 402, and the opening size of the air outlet 322 refers to the diameter of the air outlet 322. When the sizes of the second air duct 400a and the air outlet 322 are not circular, the inner diameter and the opening size can be the sizes in the width or height direction.

[0050] The technical solution of the present utility model is to arrange the purification component 200 in the first air duct 100a of the housing 100, arrange the fan 300 in the housing 100 and at the first air outlet 102 of the first air duct 100a of the housing 100. The fan 300 has a suction port 321 and a blowing port 322. The suction port 321 is communicated with the first air duct 100a of the housing 100, and the blowing port 322 is opposite to the air duct inlet 401 of the air duct 400. Then the air flow entering from the first air inlet 101 of the housing 100 passes through the purification of the purification component 200 and is then blown to the air duct 400 by the fan 300, and finally blows out of the housing 100, so that the air blown out of the housing 100 is relatively clean air. By means of the air duct, the distance from the blowing port 322 of the fan 300 to the outside of the housing 100 is extended, and thus the path of the air flow is extended, so that a certain noise reduction effect can be achieved. By making the opening size of the blowing port 322 of the fan 300 smaller than the inner diameter of the area of the air duct 400 close to the air duct outlet 402, when the air blown out from the fan 300 blows out of the housing 100 through the air duct outlet 402 of the air duct 400, the air flow speed is reduced, and thus the effect of reducing noise is achieved.

[0051] In some embodiments of the present utility model, the opening size of the air duct inlet 401 is smaller than the opening size of the air duct outlet 402 of the air duct 400.

[0052] By making the opening size of the air duct inlet 401 of the air duct 400 smaller than the opening size of the air duct outlet 402 of the air duct 400, the gas flow rate in the second air guiding channel 400a entering the air duct 400 is reduced during the flow process, thereby achieving the effect of reducing noise. Specifically, the change between the opening size of the air duct inlet 401 and the opening size of the air duct outlet 402 of the air duct 400 can show a gradually increasing trend or a stepped increasing trend. Correspondingly, when the change between the opening size of the air duct inlet 401 and the opening size of the air duct outlet 402 of the air duct 400 shows a gradually increasing trend, the air duct 400 can be in a horn shape; or when the change between the opening size of the air duct inlet 401 and the opening size of the air duct outlet 402 of the air duct 400 shows a stepped increasing trend, the air duct 400 can be in a stepped structure in the direction from its air duct inlet 401 to the air duct outlet 402.

[0053] As Figure 2 shown, in some embodiments of the present invention, along the direction from the air duct inlet 401 to the air duct outlet 402, the inner diameter of at least part of the second air guiding channel 400a gradually increases. For example, from the air duct inlet 401 to the air duct outlet 402, the inner diameter of the entire second air guiding channel 400a gradually increases; for another example, from the air duct inlet 401 to the air duct outlet 402, the inner diameter of the middle part area of the second air guiding channel 400a gradually increases, and the inner diameter of the part close to the air duct outlet 402 remains unchanged; for another example, the inner diameter of the part of the second air guiding channel 400a close to the air duct inlet 401 gradually increases, and the inner diameter of the remaining part remains unchanged or slightly decreases.

[0054] With such a setting, when the gas flows in the second air guiding channel 400a of the air duct 400, its flow rate gradually decreases, so that the noise can also gradually decrease, thereby ensuring that the air purification device 10 has a good noise reduction effect.

[0055] As Figure 2 shown, in some embodiments of the present invention, at least part of the inner wall of the second air guiding channel 400a is streamlined.

[0056] Specifically, at least part of the inner wall of the second air guiding channel 400a can be L-shaped, S-shaped or arc-shaped, etc. Among them, the entire inner wall of the second air guiding channel 400a can be streamlined, or part of the inner wall (such as the middle part, the front part, the rear part, etc.) can be streamlined.

[0057] By setting at least part of the inner wall of the second air guiding channel 400a as a curved shape, the path of the air flow can be extended, thereby further improving the noise reduction effect.

[0058] Please refer to Figure 1 and Figure 2, in some embodiments of the present utility model, an air outlet duct 140 is provided on the casing 100. The air purification device 10 further includes an outlet pipe 700. One end of the air guide pipe 400 is sleeved on one end of the air outlet duct 140, and the outlet pipe 700 is sleeved on the other end of the air outlet duct 140 and extends outside the casing 100.

[0059] By sleeving one end of the air guide pipe 400 on one end of the air outlet duct 140 and sleeving the outlet pipe 700 on the other end of the air outlet duct 140 and extending it outside the casing 100, the air flow will continue to flow through the air outlet duct 140 into the outlet pipe 700 after passing through the second air guide duct of the air guide pipe 400 after being blown out from the air outlet 322 of the fan 300, thereby further extending the flow path of the air flow and improving the noise reduction effect. By extending the outlet pipe 700 outside the casing, the flow path of the air flow is further lengthened, improving the noise reduction effect.

[0060] Please refer to Figures 1 to 3 , or refer to Figures 4 to 6 , in some embodiments of the present utility model, the air guide pipe 400 is detachably connected to the fan 300.

[0061] By detachably connecting the air guide pipe 400 to the fan 300, on the one hand, the air guide pipe 400 has good stability inside the casing 100 and can have a good guiding effect on the air blown out by the fan 300, so that more air can be guided outside the casing 100 through the air guide pipe 400; on the other hand, it is also convenient to replace the air guide pipe 400 or the fan 300 separately, and it is also convenient to install the fan 300 and the air guide pipe 400 inside the casing 100.

[0062] Specifically, when the air guide pipe 400 is detachably connected to the end of the fan 300 where the air outlet 322 is provided, it can be connected by a flange and bolt assembly, or the detachable connection effect can be achieved by plugging or clamping.

[0063] Please refer to Figures 1 to 3 , or refer to Figures 4 to 6 , in some embodiments of the present utility model, the air guide pipe 400 includes a main body section 410 and a connecting section 420. The main body section 410 is provided with a second sub-air duct 411, and the second sub-air duct 411 is provided with an air duct outlet 402; the connecting section 420 is connected to one end of the main body section 410 close to the fan 300 and has a second sub-air duct 422. The second sub-air duct 422 is communicated with the second sub-air duct 411, and the end of the fan 300 where the air outlet 322 is provided is inserted into the second sub-air duct 422.

[0064] By connecting the connecting section 420 to one end of the main body section 410 close to the fan 300, the second sub-air duct 411 of the main body section 410 communicates with the second sub-air duct 422 of the connecting section 420. When one end of the fan 300 with the air outlet 322 is inserted into the second sub-air duct 422, on the basis of making the air duct 400 communicate with the air outlet 322 of the fan 300, the fan 300 also has a good supporting effect on the air duct 400, so as to ensure that the air duct 400 has a stable state. In addition, by inserting one end of the fan 300 with the air outlet 322 into the second sub-air duct 422 of the connecting section 420 of the air duct 400, the connection between the air duct 400 and the fan 300 can be made more convenient and rapid.

[0065] Specifically, the main body section 410 and the connecting section 420 can be integrally formed, or can be connected by welding or other detachable connection methods. In addition, the main body section 410 itself can be of an integrally formed structure or a split connection structure. One end of the first air duct close to the connecting section 42 has an air duct inlet 401. The shape of the opening of the second sub-air duct 422 for the fan 300 to insert can be the same as or different from that of the air duct inlet 401. The opening size of the opening of the second sub-air duct 422 for the fan 300 to insert can be the same as or different from the opening size of the air duct inlet 401. Further, in one example, the opening size of the opening of the second sub-air duct 422 for the fan 300 to insert is larger than the opening size of the air duct inlet 401, that is, a limiting step can be provided at one end of the second sub-air duct 422 communicating with the air duct inlet 401, and the limiting step can limit the fan 300 inserted into the second sub-air duct 422, so as to prevent the length of the fan 300 inserted into the air duct 400 from being too long.

[0066] As Figure 3 shown, based on the solution that one end of the fan 300 with the air outlet 322 is inserted into one end of the second sub-air duct 422 of the air duct 400, further, in some embodiments of the present invention, a buffer member 500 is provided between the inner wall of the second sub-air duct 422 and the outer wall of one end of the fan 300 with the air outlet 322.

[0067] By providing a buffer member 500 between the inner wall of the second sub-air duct 422 and the outer wall of one end of the fan 300 with the air outlet 322, a buffering effect can be achieved on the impact between the inner wall of the second sub-air duct 422 and the outer wall of one end of the fan 300 with the air outlet 322, and further, the noise of the air purification device 10 can be further reduced. Specifically, the buffer member 500 can be a rubber sleeve, a silica gel sleeve or a foam, etc.

[0068] As Figure 3As shown in the figure, based on the solution that one end of the blower 300 provided with the air outlet 322 is inserted into one end of the second sub-air duct 422 of the air guide pipe 400, in some embodiments of the present invention, the buffer member 500 is clamped between the inner wall of the second sub-air duct 422 and the outer wall of one end of the blower 300 provided with the air outlet 322.

[0069] By clamping the buffer member 500 between the inner wall of the second sub-air duct 422 and the outer wall of one end of the blower 300 provided with the air outlet 322, the buffer member 500 can form a sealing effect between the blower 300 and the air guide pipe 400, thereby reducing the risk that the noise generated inside the blower 300 leaks into the casing 100 and then is transmitted to the outside of the air purification device 10 through the outer wall of the casing 100 or the air outlet duct 140 of the casing 100.

[0070] Please refer to Figures 4 to 6 , based on the solution that one end of the blower 300 provided with the air outlet 322 is inserted into one end of the second sub-air duct 422 of the air guide pipe 400, in some other embodiments of the present invention, an air overflow gap 600 is provided between the inner wall of the second sub-air duct 422 and the outer wall of one end of the blower 300 provided with the air outlet 322, and the air overflow gap 600 communicates with the inner cavity of the casing 100.

[0071] By providing an air overflow gap 600 between the inner wall of the second sub-air duct 422 and the outer wall of one end of the blower 300 provided with the air outlet 322, and the air overflow gap 600 communicates with the air outlet 322 and the inner cavity of the casing 100, the air blown out from the air outlet 322 of the blower 300 can be blown into the inner cavity of the casing 100 through the air overflow gap 600, so that a part of the air can be distributed to the inner cavity of the casing 100, which is convenient for dissipating heat from the heat generating components provided in the inner cavity of the casing 100. For example, it can dissipate heat from the circuit board provided in the inner cavity of the casing 100 or the motor 310 of the blower 300, etc.

[0072] Furthermore, the size of the air overflow gap 600 is W, and 0.5 mm ≤ W ≤ 1.2 mm.

[0073] Specifically, the air overflow gap 600 can be 0.5 mm, or 0.6 mm, or 0.7 mm, or 0.8 mm, or 0.9 mm, or 1.0 mm, or 1.1 mm, or 1.2 mm.

[0074] By setting the overflow air gap 600 to be not less than 0.5 mm, at least part of the air blown out from the air outlet 322 of the fan 300 can enter the inner cavity of the housing 100, so that some heat-generating components in the inner cavity of the housing 100 can be effectively cooled. In addition, by setting the overflow air gap 600 to be not greater than 1.2 mm, the risk of excessive air entering the housing 100 and causing turbulent flow can be avoided, so as to ensure that more air can still be discharged from the housing 100 through the air duct 400.

[0075] When a buffer member 500 is provided between the inner wall of the second sub-air duct 422 and the outer wall of the end of the fan 300 where the air outlet 322 is provided. Further, as Figure 6 shown, an overflow air gap 600 can be provided between the buffer member 500 and the inner wall of the second sub-air duct 422, and the overflow air gap 600 communicates with the air outlet 322 and the inner cavity of the housing 100. With such a setting, the air blown out from the air outlet 322 of the fan 300 can still be blown into the inner cavity of the housing 100 through the overflow air gap 600, so that part of the air can be distributed to the inner cavity of the housing 100, which is convenient for cooling the heat-generating components provided in the inner cavity of the housing 100. For example, it can cool the circuit board provided in the inner cavity of the housing 100 or the motor 310 of the fan 300, etc. In addition, the setting of the buffer 500 also has a buffering effect between the outer wall of the fan 300 and the inner wall of the second sub-air duct 422, thereby reducing the risk of collision noise generated by the collision of the two.

[0076] In an embodiment of the present invention, please refer to Figure 5 and Figure 6 . A first installation cavity 120 and a second installation cavity 130 which are communicated are provided in the housing 100. The purification component 200 is installed in the first installation cavity 120, the fan 300 is arranged in the second installation cavity 130, and the overflow gap communicates with the second installation cavity 130.

[0077] The housing 100 has a first installation cavity 120 and a second installation cavity 130. The purification component 200 is installed in the first installation cavity 120, the fan 300 is arranged in the second installation cavity 130, and the communication hole on the partition plate communicates the first installation cavity 120 and the second installation cavity 130. Then, the air inlet 321 of the fan 300 can communicate with the communication hole, and at least part of the air blown out from the air outlet 322 of the fan 300 is blown into the second installation cavity 130 through the overflow gap and enters the components arranged in the second installation cavity 130 for cooling. In addition, with such a setting, the air passing through the first air inlet 101 can be purified by the purification component 200 as soon as possible, and the risk that the air entering from the first air inlet 101 flows in a direction deviating from the purification component 200 can be reduced.

[0078] The present invention also proposes a laser processing system. Please refer to Figure 7, the laser processing system includes a laser processing device 20 and an air purification device 10. The specific structure of the air purification device 10 refers to the above-mentioned embodiments. Since this laser processing system adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one. Among them, the laser processing device 20 has an air outlet 21b, and the first air inlet of the air purification device 10 is connected to the air outlet 21b of the laser processing device 20 through a connecting pipe 30; alternatively, the air purification device 10 is arranged inside the laser processing device 20. With such a setting, the air purification device 10 can purify the particulate matter and harmful gases generated during the processing of the laser processing device 20.

[0079] This application proposes a laser processing device 20, which can specifically be a laser engraving machine, and of course can also be a laser cutting machine, etc. This application does not limit the type of the laser processing device 20, as long as it is a device that uses laser as a medium to process the workpiece to be processed.

[0080] Further, the laser processing device 20 may include a machine body 21, a laser head 22, and an air purification device 10. Among them, the machine body 21 may be provided with a processing chamber 21A, an air inlet 21a, and an air outlet 21b communicating with the processing chamber 21A. The laser head 22 may be arranged in the processing chamber 21A to emit laser to realize laser processing of the workpiece to be processed placed in the processing chamber 21A. The air purification device 10 may be communicated with the air outlet 21b, and of course, the air purification device 10 may also be directly arranged in the air outlet 21b to ensure that the processing exhaust gas in the processing chamber 21A can enter the air purification device 10 to be purified and then discharged from the air purification device 10. Among them, when the air purification device 10 is arranged outside the machine body 21 in order to reduce the overall volume of the machine body 21, the laser processing device 20 may further include a connecting pipe 30. One end of the connecting pipe 30 may be communicated with the air outlet 21b, and the other end may be communicated with the air purification device 10. Further, in order to facilitate the separate transportation and storage of the air purification device 10 and the machine body 21, in one embodiment, the connecting pipe 30 and the machine body 21 and the air purification device 10 may be detachably connected. Further, in order to simplify the disassembly and assembly process, the detachable connection method of the connecting pipe 30 with the machine body 21 and the air purification device 10 may be snap connection or magnetic connection, etc. In addition, in order to facilitate the adaptation of the connecting pipe 30 to the layout in various places, in one embodiment, the connecting pipe 30 may be a flexible pipe. In addition, the laser processing device 20 may further include a fan arranged on the machine body 21 to drive the external air flow to enter from the air inlet 21a and then discharge from the air outlet 21b. Among them, the fan may be arranged in the processing chamber 21A, and of course, it may also be arranged in the air inlet 21a or the air outlet 21b.

[0081] The above are only exemplary embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included within the patent protection scope of the present utility model.

Claims

1. An air purification device, characterized in that, Comprising: A casing having a first air guiding channel with a first air inlet and a first air outlet; A purification component disposed in the first air guiding channel; A fan disposed in the casing and located at the first air outlet, having an air suction port and an air blowing port, the air suction port communicating with the first air guiding channel; And A duct having a second air guiding channel with an air duct inlet and an air duct outlet, the air duct inlet being opposite to the air blowing port, and the inner diameter of the region of the second air guiding channel near the air duct outlet being greater than the opening size of the air blowing port.

2. The air purification device according to claim 1, wherein The opening size of the air duct inlet is smaller than the opening size of the air duct outlet.

3. The air purification device according to claim 2, characterized in that, Along the direction from the air duct inlet to the air duct outlet, the inner diameter of at least part of the second air guiding channel gradually increases.

4. The air purification device according to claim 1, characterized in that, At least part of the inner wall of the second air guiding channel is streamlined.

5. The air purification device according to claim 1, characterized in that, An air outlet duct is provided on the casing, and the air purification device further includes an outlet pipe. One end of the duct is sleeved on one end of the air outlet duct, and the outlet pipe is sleeved on the other end of the air outlet duct and extends outside the casing.

6. The air purification device according to any one of claims 1-5, characterized in that, The duct includes: A main body section provided with a first sub-air duct of the second air guiding channel, and the first sub-air duct of the second air guiding channel is provided with the air duct outlet; and An adapter section connected to one end of the main body section close to the fan and having a second sub-air duct of the second air guiding channel, the second sub-air duct of the second air guiding channel communicating with the first sub-air duct of the second air guiding channel, and one end of the fan provided with the air blowing port being inserted into the second sub-air duct of the second air guiding channel.

7. The air purification device according to claim 6, characterized in that, A buffer member is provided between the inner wall of the second sub-air duct of the second air guiding channel and the outer wall of the end of the fan provided with the air blowing port.

8. The air purification device according to claim 7, characterized in that, The buffer member is clamped between the inner wall of the second sub-air duct of the second air guiding channel and the outer wall of the end of the fan provided with the air blowing port.

9. The air purification device according to claim 6, characterized in that, An air overflow gap is provided between the inner wall of the second sub-air duct of the second air guiding channel and the outer wall of the end of the fan provided with the air blowing port, and the air overflow gap communicates with the inner cavity of the casing.

10. A laser processing system, characterized in that, Including a laser processing device and the air purification device according to any one of claims 1 to 9, the laser processing device having an air exhaust port, the first air inlet of the air purification device being connected to the air exhaust port of the laser processing device through a connecting pipe; or, the air purification device is disposed inside the laser processing device.

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