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 casing, a purification assembly, a fan and a circuit board; the shell is provided with a first air inlet, a first air guide duct, a second air guide duct and an overflow air duct, the first air guide duct is communicated with the first air inlet, and the second air guide duct and the overflow air duct are communicated with the outside; the purification assembly is arranged in the first air guide duct; the fan is arranged at a first air outlet of the first air guide duct and provided with an air suction opening and an air blowing opening, the air suction opening communicates with the first air guide duct, the air blowing opening communicates with the second air guide duct, and the second air guide duct further communicates with the overflow air duct; and the circuit board is positioned outside the fan and in the overflow air duct. According to the technical scheme provided by the utility model, the arrangement cost of parts in 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 housing, a fan and a circuit board arranged in the housing. The circuit board generates a large amount of heat during operation. If the circuit board is not cooled, it is easy to cause damage to the circuit board and affect the service life of the air purification device.

[0003] In the related art, a separate fan is usually provided to cool the circuit board, resulting in an increase in the cost of the air purification device. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose an air purification device and a laser processing system, aiming to reduce the cost of the air purification device while being able to cool the circuit board.

[0005] To achieve the above object, the air purification device proposed by the utility model includes a housing, a purification component, a duct, a fan and a circuit board; the housing has a first air inlet, a first air guiding duct, a second air guiding duct and an overflow duct, the first air guiding duct communicates with the first air inlet, and both the second air guiding duct and the overflow duct communicate with the outside; the purification component is arranged in the first air guiding duct; the fan is arranged at the first air outlet of the first air guiding duct, the fan has a suction port and a blowing port, the suction port communicates with the first air guiding duct, the blowing port communicates with the second air guiding duct, and the second air guiding duct also communicates with the overflow duct; the circuit board is located outside the fan and in the overflow duct.

[0006] In an embodiment, the housing is provided with a duct, the duct forms the second air guiding duct, the duct has a second air inlet and a second air outlet, the second air inlet communicates with the blowing port, and the second air outlet communicates with the outside.

[0007] In an embodiment, a gap is formed between the second air inlet and the blowing port, and the gap communicates with the overflow duct.

[0008] In an embodiment, the gap between the duct and the side of the impeller cover where the blowing port is provided is W, and 0.5mm ≤ W ≤ 1.2mm;

[0009] And / or, the space shape formed by the gap is annular and surrounds the center line of the blowing port.

[0010] In one embodiment, the blower includes an impeller housing and an impeller. The impeller is disposed within the impeller housing. The impeller housing is provided with the air suction port and the air blowing port. One end of the air duct, where the second air inlet is provided, is provided with a collar portion. The collar portion is sleeved outside the end of the impeller housing where the air blowing port is provided. A first gap is provided between the inner wall of the collar portion and the outer wall of the air blowing port. The first gap communicates with the overflow air duct, and the first gap can also communicate with the air blowing port.

[0011] In one embodiment, the air duct includes a first end face opposite to the air blowing port. A second gap is provided between the second end face of the impeller housing where the air blowing port is provided and the first end face. The second gap communicates with the first gap.

[0012] In one embodiment, the housing further has heat dissipation holes. The heat dissipation holes communicate with the overflow air duct and the outside; and / or, the air duct wall of the second air guiding duct is provided with air overflow holes. The air overflow holes communicate with the second air guiding duct and the overflow air duct.

[0013] In one embodiment, the air purification device further includes a heat dissipation member. The heat dissipation member is disposed in the overflow air duct and is in contact with the circuit board.

[0014] In one embodiment, a first installation cavity and a second installation cavity are formed within the housing. The purification assembly is installed in the first installation cavity. The blower and the circuit board are both disposed in the second installation cavity. The second air guiding duct is located in the second installation cavity. An overflow air duct is formed between the cavity wall of the second installation cavity and the outer wall of the second air guiding duct.

[0015] The present utility model further provides a laser processing system, including a laser processing device and the above-mentioned air purification device. The laser processing device has an air exhaust port. The first air inlet of the air purification device is connected to the air exhaust port of the laser processing device through a pipeline; or, the air purification device is disposed within the laser processing device.

[0016] The technical solution of the present utility model is that by providing a first air inlet and a first air guiding duct on the casing, and the purification component is arranged in the first air guiding duct, the air entering from the first air inlet can be blown out from the first air outlet of the first air guiding duct after being purified by the purification component, so as to ensure that relatively clean gas is blown out from the first air outlet. By arranging the fan at the first air outlet of the first air guiding duct, the fan has a suction port and a blowing port, the suction port is communicated with the first air guiding duct, the blowing port is communicated with the second air guiding duct, and the second air guiding duct is also communicated with the overflow duct. On the one hand, it can accelerate the blowing out of clean air from the second air guiding duct through the fan, and on the other hand, part of the air blown out from the blowing port can enter the overflow duct. By arranging the circuit board outside the fan and in the overflow duct, the air blown from the blowing port into the overflow duct can dissipate heat from the circuit board, thereby prolonging the service life of the circuit board, and there is no need to separately set a fan for heat dissipation of the circuit board, saving the cost of the air purification device. Brief 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 use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

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

[0019] Figure 2 is Figure 1 Cross-sectional view taken along line A-A in

[0020] Figure 3 is Figure 2 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 is Figure 4 Cross-sectional view taken along line C-C in

[0023] Figure 6 is Figure 5 Partial enlarged view at D in

[0024] Figure 7 Structural schematic diagram 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; 104. Overflow air duct; 105. Gap; 1051. First gap; 1052. Second gap; 120. First installation cavity; 130. Second installation cavity; 100a. First air guiding duct;

[0028] 200. Purification component;

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

[0030] 400. Air guiding pipe; 400a. Second air guiding duct; 401. Second air inlet; 402. Second air outlet; 410. First end face; 420. Collar part;

[0031] 500. Circuit board;

[0032] 600. Heat dissipation component;

[0033] 20. Laser processing equipment; 21. Machine body; 21A. Processing cavity; 21a. Air inlet; 21b. Air outlet; 22. Laser head;

[0034] 30. Connecting pipe.

[0035] 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

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described 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 of the 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.

[0037] 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 position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying 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, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0039] Currently, the air purification devices on the market generally include a casing, a fan for air circulation provided in the casing, and a circuit board. The circuit board generates a large amount of heat during operation. If the circuit board is not cooled, it is likely to cause damage to the circuit board and affect the service life of the air purification device. In the related art, it is usually necessary to separately install another fan to cool the circuit board. Such a setting makes the components of the air purification device numerous and the component cost high.

[0040] In order to improve the problem of high component cost of the existing air purification devices, the present utility model proposes an air purification device.

[0041] Please refer to Figures 1 to 6 In an embodiment of the present utility model, the air purification device 10 includes a casing 100, a purification component 200, a fan 300, and a circuit board 500; the casing 100 has a first air inlet 101, a first air guiding duct 100a, a second air guiding duct 400a, and an overflow duct 104; the purification component 200 is provided in the first air guiding duct 100a; the fan 300 is provided at the first air outlet 102 of the first air guiding duct 100a. The fan 300 has a suction port 321 and a blowing port 322. The suction port 321 communicates with the first air guiding duct 100a, and the blowing port 322 communicates with the second air guiding duct 400a. The second air guiding duct 400a also communicates with the overflow duct 104; the circuit board 500 is located outside the fan 300 and inside the overflow duct 104.

[0042] The housing 100 has a first air inlet 101 and a first air guiding duct 100a. The purification component 200 is arranged in the air guiding duct. Then, air can enter the first air guiding duct 100a through the first air inlet 101 of the air purification device 10, and can be purified by the purification component 200 in the first air guiding duct 100a. Furthermore, it can ensure that the purified air is blown out from the first air outlet 102 of the first air guiding duct 100a. The shape of the first air inlet 101 can be circular, rectangular or other shapes. Similarly, the shape of the first air outlet 102 can be circular, rectangular or other shapes. The housing 100 can be cylindrical, prismatic or other shapes. The orientations of the first air inlet 101 and the first air outlet 102 of the first air guiding duct 100a can be the same or different. The shape of the first air guiding duct 100a between the first air inlet 101 and the first air outlet 102 can be linear or curved, as long as it can ensure that the air entering from the first air inlet 101 can be blown out from the first air outlet 102 of the first air guiding duct 100a after being purified by the purification component 200. The first air guiding duct 100a can be a tubular body independent of the housing 100, or can be a duct formed by enclosing components such as the inner wall of the housing 100 or a partition in the housing 100. The fan 300 is arranged at the first air outlet 102 of the first air guiding duct 100a. The air suction port 321 of the fan 300 is communicated with the first air guiding duct 100a, and the air blowing port 322 of the fan 300 can be communicated with the second air guiding duct 400a. Then, the air entering from the first air inlet 101 can be blown out through the second air guiding duct 400a under the action of the fan 300, thereby improving the flow rate of the air flow.

[0043] The housing 100 further has an overflow duct 104, and the second air guiding duct 400a is also communicated with the overflow duct 104. Then, a part of the air blown out from the air blowing port 322 of the fan 300 can enter the overflow duct 104, and further can dissipate heat from the components located in the overflow duct 104. In the air purification device 10, the circuit board 500 is the main control component in the air purification device 10, and it will generate a large amount of heat during operation. When the circuit board 500 is located outside the fan 300 and inside the overflow duct 104, the air blown out from the air blowing port 322 can enter the overflow duct 104 to dissipate heat from the circuit board 500. In the technical solution of the present utility model, the fan 300 can not only blow the air that normally passes through the purification component 200 through the first air inlet 101 into the second air guiding duct 400a, but also blow a part of the air into the overflow duct 104 to dissipate heat from the circuit board 500. Thus, the air purification device 10 does not need to be provided with a separate fan only for dissipating heat from the circuit board 500, and further reduces the number of components of the air purification device 10 and the cost of the components of the air purification device 10.

[0044] Specifically, in order to enable the second air guiding air duct 400a to communicate with both the air blowing port 322 and the overflow air duct 104. In one example, the duct wall of the second air guiding air duct 400a can extend to the air blowing port 322, and the second air guiding air duct 400a can be sleeved outside one end of the blower 300 provided with the air blowing port 322. There is a gap between the outer wall of the air blowing port 322 and the inner wall of the second air guiding air duct 400a, so that the second air guiding air duct 400a can communicate with the overflow air duct 104 through this gap, and at the same time, the air blowing port 322 can also communicate with the overflow air duct 104 through this gap. In another example, one end of the second air guiding air duct 400a close to the blower 300 is spaced from the air blowing port 322 in the air blowing direction of the air blowing port. At this time, there is a gap between one end of the second air guiding air duct 400a close to the blower 300 and the air blowing port 322, and this gap communicates with the overflow air duct 104, so as to achieve the effect that the second air guiding air duct 400a communicates with the overflow air duct 104 through this gap, and at the same time, the air blowing port 322 can also communicate with the overflow air duct 104 through this gap. In yet another example, no gap is provided between the second air guiding air duct 400a and the air blowing port 322, and an overflow air hole is provided on the second air guiding air duct 400a, and this overflow air hole communicates with the overflow air duct 104, so as to achieve the effect that the second air guiding air duct 400a communicates with the overflow air duct 104 through this overflow air hole.

[0045] The technical solution of the present utility model is to set a first air inlet 101 and a first air guiding air duct 100a on the housing 100. The purification component 200 is arranged in the first air guiding air duct 100a. Then the air entering from the first air inlet 101 can be blown out from the first air outlet 102 of the first air guiding air duct 100a under the purification of the purification component 200, so as to ensure that relatively clean gas is blown out from the first air outlet 102. By arranging the blower 300 at the first air outlet 102 of the first air guiding air duct 100a, the blower 300 has a suction port 321 and a blowing port 322. The suction port 321 communicates with the first air guiding air duct 100a, and the blowing port 322 communicates with the second air guiding air duct 400a. The second air guiding air duct 400a also communicates with the overflow air duct 104. On the one hand, the blower 300 can accelerate the blowing out of clean air from the second air guiding air duct 400a, and on the other hand, part of the air blown out from the blowing port 322 can enter the overflow air duct 104. By arranging the circuit board 500 outside the blower 300 and inside the overflow air duct 104, the air blown from the blowing port 322 into the overflow air duct 104 can dissipate heat from the circuit board 500, thereby extending the service life of the circuit board 500, and there is no need to separately set a fan for the circuit board 500 to dissipate heat, saving the cost of the air purification device 10.

[0046] Please refer to Figures 1 to 3, in some embodiments of the present utility model, an air duct 400 is installed on the housing 100. The air duct 400 forms a second air guiding duct 400a. The air duct 400 has a second air inlet 401 and a second air outlet 402. The second air inlet 401 is communicated with the blowing port 322, and the second air outlet 402 is communicated with the outside.

[0047] By installing the air duct 400 on the housing 100, the air duct 400 forms a second air guiding duct 400a. The second air inlet 401 of the air duct 400 is communicated with the blowing port 322, and the second air outlet 402 is communicated with the outside. Then it can be ensured that the air blown out through the blowing port 322 of the fan 300 can pass through the air duct 400 and be blown to the outside. In addition, the setting of the air duct 400 can effectively guide some of the air passing through the purification component 200, so as to ensure that at least part of the clean air can be discharged from the air duct 400, and it can also make the air guiding duct independent of the overflow air duct 104.

[0048] Specifically, when the second air inlet 401 of the air duct 400 is communicated with the blowing port 322, the side of the air duct 400 provided with the second air inlet 401 and the side of the fan 300 provided with the blowing port 322 can be arranged in a fitting manner; or, one end of the air duct 400 provided with the second air inlet 401 is inserted into the blowing port 322; or, there is a gap 105 between the side of the air duct 400 provided with the second air inlet 401 and the side of the fan 300 provided with the blowing port 322, etc. As long as it can be ensured that the second air inlet 401 of the air duct 400 can be communicated with the blowing port 322 of the impeller cover 320. Based on the scheme that the side of the air duct 400 provided with the second air inlet 401 and the side of the fan 300 provided with the blowing port 322 can be arranged in a fitting manner in this embodiment, or one end of the air duct 400 provided with the second air inlet 401 is inserted into the blowing port 322, an air overflow hole can be opened on the side wall of the air duct 400, and the air overflow hole is communicated with the overflow air duct 104. Furthermore, it can be ensured that the second air guiding duct 400a of the air duct 400 is communicated with the air overflow hole, so that part of the air blown out from the blowing port 322 can also enter the overflow air duct 104 to dissipate heat from the circuit board 500 in the overflow air duct 104.

[0049] Please refer to Figures 1 to 3 or Figures 4 to 6 , in some embodiments of the present utility model, there is a gap 105 between the second air inlet 401 and the blowing port 322, and the gap 105 is communicated with the overflow air duct 104.

[0050] A gap 105 is provided between the second air inlet 401 and the air blowing port 322. It can mean that the gap 105 is provided between the second air inlet 401 and the air blowing port 322 in the air blowing direction of the air blowing port 322, or it can mean the socket gap generated when one end of the fan 300 of the second air inlet 401 is socketed with the air blowing port 322. By providing a gap 105 between the air duct 400 and the air blowing port 322, and this gap 105 communicates with the overflow air duct 104, at least part of the air blown out from the air blowing port 322 can enter the overflow air duct 104 through this gap 105, thereby ensuring the effective heat dissipation effect of the circuit board 500 in the overflow air duct 104.

[0051] Further, in an example, the spatial shape formed by the gap 105 is annular, and this gap surrounds the center line of the air blowing port 322.

[0052] With such a setting, a part of the air blown out from the air blowing port 322 can flow in the direction of the overflow air duct 104 through this annular gap 105, thereby improving the efficiency of blowing air into the overflow air duct 104 and thus improving the heat dissipation effect.

[0053] Such as Figure 3 Or Figure 6 As shown, in some embodiments of the present invention, the gap 105 between the air duct 400 and the side of the impeller cover 320 where the air blowing port 322 is provided is W, and 0.5mm ≤ W ≤ 1.2mm.

[0054] Specifically, the gap 105 between the air duct 400 and the side of the impeller cover 320 where the air blowing port 322 is provided being W can be 0.5mm, or 0.6mm, or 0.7mm, or 0.8mm, or 0.9mm, or 1.0mm, or 1.1mm, or 1.2mm.

[0055] By setting the gap 105W between the air duct 400 and the side of the impeller cover 320 where the air blowing port 322 is provided to be not less than 0.5mm, at least part of the air blown out from the air blowing port 322 of the impeller cover 320 can enter the overflow air duct 104, so that the circuit board 500 in the overflow air duct 104 can be effectively cooled. By setting the gap 105W between the air duct 400 and the side of the impeller cover 320 where the air blowing port 322 is provided to be not greater than 1.2mm, the risk of turbulent flow caused by too much air entering the overflow air duct 104 can be avoided, ensuring that more air can still be discharged outside the machine case 100 through the air duct 400.

[0056] Such as Figure 6As shown, in one example, the blower 300 includes an impeller housing 320 and an impeller. The impeller is disposed within the impeller housing 320. The impeller housing 320 is provided with an air suction port 321 and a blowing port 322. One end of the duct 400 provided with a second air inlet 401 is provided with a collar portion 420. The collar portion 420 is sleeved outside the end of the impeller housing 320 provided with the blowing port 322. A first gap 1051 is provided between the inner wall of the collar portion 420 and the outer wall of the blowing port 322. The first gap 1051 communicates with the overflow air duct 104, and the first gap 1051 can also communicate with the blowing port 322.

[0057] With such an arrangement, on the one hand, it can ensure that a part of the air blown out from the blowing port 322 can enter the first gap 1051 and then enter the overflow air duct 104 to dissipate heat from the circuit board 500 in the overflow air duct 104. Additionally, with such an arrangement, it can also enable the duct 400 to be effectively supported by the impeller housing 320, thereby ensuring that the duct 400 is installed more stably.

[0058] As Figure 6 As shown, in another example, the duct 400 includes a first end face 410 opposite to the blowing port 322. A second gap 1052 is provided between the second end face 320a of the impeller housing 320 provided with the blowing port 322 and the first end face 410. The second gap 1052 communicates with the first gap 1051.

[0059] It can be understood that the first gap 1051 and the second gap 1052 together form a gap 105 between the second air inlet 401 and the blowing port 322. At this time, the gap 105 is in a shape similar to an L. With such an arrangement, it can ensure that a part of the air blown out from the blowing port 322 can enter the second gap 1052 and the first gap 1051 and then enter the overflow air duct 104, thereby achieving the effect of dissipating heat from the circuit board 500 in the overflow air duct 104.

[0060] In yet another example, specifically, based on the solution where there is a gap 105 between the second air inlet 401 and the blowing port 322, in one example, the duct 400 and the impeller housing 320 of the blower 300 are independent of each other, and there is no mutual assembly between them. The duct 400 and the impeller housing 320 are spaced apart in the blowing direction of the blowing port 322. The end face of the duct 400 provided with the second air inlet 401 and the end face of the impeller housing 320 of the blower 300 provided with the blowing port 322 are spaced apart, so that a gap 105 can be provided between the second air inlet 401 and the blowing port 322. With such an arrangement, the length of the duct 400 can be shortened, the material cost of the duct 400 can be reduced, and thus the material cost of the air purification device 10 is reduced.

[0061] Of course, in other embodiments, the air duct 400 and the impeller cover 320 are spaced apart in the blowing direction of the air outlet 322, and the air outlet 322 can be arranged in a staggered manner with the second air inlet 401, as long as it can ensure that the air blown out from the air outlet 322 can enter the second air inlet 401.

[0062] In an embodiment of the present invention, the casing 100 further has heat dissipation holes (not shown), and the heat dissipation holes communicate with the overflow air duct 104 and the outside.

[0063] By further providing heat dissipation holes on the casing 100 that communicate with both the overflow air duct 104 and the outside, the air flow that exchanges heat with the circuit board 500 in the overflow air duct 104 can be discharged from the heat dissipation holes, enabling the overflow air duct 104 to convect with the outside, thereby avoiding excessive heat accumulation in the overflow air duct 104, and thus ensuring that the heat dissipation time for the circuit board 500 can be extended.

[0064] As Figure 1 or Figure 5 shown, in an embodiment of the present invention, the fan 300 further includes a motor 310, and the motor 310 is located in the overflow air duct 104.

[0065] By also arranging the motor 310 in the overflow air duct 104, part of the air blown out from the air outlet 322 can enter the overflow air duct 104 and then dissipate heat from the motor 310 of the fan 300, thereby further improving the service life of the fan 300 and reducing the situation of setting components for separately dissipating heat from the motor 310 of the fan 300.

[0066] In some embodiments of the present invention, the air duct wall of the second air guiding duct 400a is provided with air overflow holes, and the air overflow holes communicate with the second air guiding duct 400a and the overflow air duct 104.

[0067] With such a setting, after the air blown out from the air outlet 322 of the fan 300 enters the second air guiding duct 400a, part of the air can flow from the air overflow holes into the overflow air duct 104, and thus the effect of effectively dissipating heat from the circuit board 500 in the overflow air duct 104 can be achieved.

[0068] In some embodiments of the present invention, the air purification device 10 further includes a heat dissipation member 600, and the heat dissipation member 600 is arranged in the overflow air duct 104 and is in contact with the circuit board 500.

[0069] Specifically, the heat dissipation member 600 can be heat dissipation fins or heat dissipation pipes, etc. By bringing the heat dissipation member 600 into contact with the circuit board 500, the heat dissipation effect on the circuit board 500 can be further improved, thereby ensuring that the circuit board 500 has a long service life.

[0070] In an embodiment of the present utility model, a first installation cavity 120 and a second installation cavity 130 are formed inside the housing 100. The purification component 200 is installed in the first installation cavity 120, both the fan 300 and the circuit board 500 are arranged in the second installation cavity 130. The second air guiding duct 400a is located in the second installation cavity 130, and an overflow air duct 104 is formed between the wall of the second installation cavity 130 and the outer wall of the second air guiding duct 400a.

[0071] When the first installation cavity 120 and the second installation cavity 130 are formed inside the housing 100, the housing 100 can be divided into the first installation cavity 120 and the second installation cavity 130 by a partition, or the housing 100 can be divided into the first installation cavity 120 and the second installation cavity 130 by other components such as the purification component 200 installed inside the housing 100. The purification component 200 is installed in the first installation cavity 120, the fan 300 and the circuit board 500 are arranged in the second installation cavity 130. The second air guiding duct 400a is located inside the second installation cavity, and an overflow air duct 104 is formed between the cavity wall of the second air guiding duct 400a and the outer wall of the second air guiding duct 400a. Then, it can enable the outside air to enter the purification component 200 inside the first installation cavity 120 through the first air inlet 101 to achieve a better purification effect. Furthermore, under the drive of the fan 300, the purified air continues to be blown out from the air outlet 322 of the fan 300, and at least part of the air is blown into the second installation cavity 130, and a part of the air enters the overflow air duct 104 to dissipate heat from the circuit board 500, and the other part is blown out of the housing 100 through the second air guiding duct 400a. In addition, by arranging the purification component 200 in the first installation cavity 120 and the circuit board 500 in the second installation cavity 130, when dissipating heat from the circuit board 500, the space that the air blown out from the air outlet 322 of the fan 300 passes through is smaller, so as to quickly dissipate heat from the circuit board 500, and avoid the air blown out from the air outlet 322 of the fan 300 from flowing randomly to the space near the purification component 200, and further avoid the risk that the air blown out from the air outlet 322 has a too wide diffusion range and a poor heat dissipation effect on the circuit board 500.

[0072] The present utility model 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, which 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.

[0073] This application proposes a laser processing device 20, which can specifically be a laser engraving machine, and can of course 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.

[0074] 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 in communication 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 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 in communication with the air outlet 21b, and the other end may be in communication 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.

[0075] 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, the casing having a first air inlet, a first air guiding duct, a second air guiding duct and an overflow duct, the first air guiding duct communicating with the first air inlet, and both the second air guiding duct and the overflow duct communicating with the outside; A purification component, the purification component being disposed in the first air guiding duct; A fan, the fan being disposed at a first air outlet of the first air guiding duct, the fan having a suction port and a blowing port, the suction port communicating with the first air guiding duct, the blowing port communicating with the second air guiding duct, and the second air guiding duct also communicating with the overflow duct; and A circuit board, the circuit board being located outside the fan and inside the overflow duct.

2. The air purification device according to claim 1, characterized in that, The casing is provided with a duct, the duct forming the second air guiding duct, the duct having a second air inlet and a second air outlet, the second air inlet communicating with the blowing port, and the second air outlet communicating with the outside.

3. The air purification device according to claim 2, characterized in that, A gap is formed between the second air inlet and the blowing port, and the gap communicates with the overflow duct.

4. The air purification device according to claim 3, characterized in that, The gap is W, where 0.5 mm ≤ W ≤ 1.2 mm; and / or, The spatial shape formed by the gap is annular and surrounds the center line of the blowing port.

5. The air purification device according to claim 3, characterized in that, The fan includes an impeller cover and an impeller, the impeller being disposed inside the impeller cover, the impeller cover being provided with the suction port and the blowing port, one end of the duct provided with the second air inlet being provided with a collar portion, the collar portion being sleeved outside the end of the impeller cover provided with the blowing port, a first gap being provided between the inner wall of the collar portion and the outer wall of the blowing port, the first gap communicating with the overflow duct and also being able to communicate with the blowing port.

6. The air purification device according to claim 5, characterized in that, The duct includes a first end face opposite to the blowing port, and a second gap is provided between the second end face of the impeller cover provided with the blowing port and the first end face, and the second gap communicates with the first gap.

7. The air purification device according to claim 1, wherein The casing further has heat dissipation holes, the heat dissipation holes communicating with the overflow duct and the outside; and / or, The duct wall of the second air guiding duct is provided with air overflow holes, the air overflow holes communicating with the second air guiding duct and the overflow duct.

8. The air purification device according to claim 1, wherein, The air purification device further includes a heat dissipation member, the heat dissipation member being disposed in the overflow duct and in contact with the circuit board.

9. The air purification device according to any one of claims 1 to 8, characterized in that, A first installation cavity and a second installation cavity are formed inside the casing, the purification component is installed in the first installation cavity, the fan and the circuit board are both disposed in the second installation cavity, the second air guiding duct is located in the second installation cavity, and the overflow duct is formed between the cavity wall of the second installation cavity and the outer wall of the second air guiding duct.

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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