CN221775321U - A 3D printer - Google Patents

Abstract

The embodiment of the application provides a 3D printer, which comprises: the shell is internally provided with a containing cavity, a printing head, a printing platform and a driving device are arranged in the containing cavity, the printing head is arranged above the printing platform, the driving device is used for driving the printing head and the printing platform to generate relative displacement, and the printing head is used for extruding materials so as to print a model; the purification device is arranged on the shell, and comprises an air outlet, an air inlet and an air flow channel between the air outlet of the purification device and the air inlet of the purification device, wherein the air inlet of the purification device faces the accommodating cavity and is communicated with the accommodating cavity; the airflow channel comprises a filter component and a centrifugal fan, and the filter component is positioned on the air inlet side of the centrifugal fan; the filter component is used for purifying air entering the accommodating cavity from the vent hole, and the centrifugal fan is used for conveying the purified air from the air inlet side of the centrifugal fan to the air outlet side of the centrifugal fan.

Description

3D printer

Technical Field

The utility model relates to the technical field of 3D printing, in particular to a 3D printer.

Background

For processes such as laser engraving, soldering tin, 3D printing and the like, related equipment is easy to generate smoke dust, VOC (Volatile Organic Compounds, volatile organic compound) gas and the like which possibly endanger human health in the operation process. In order to perform harmless treatment on these harmful substances, it is necessary to install or arrange a corresponding air purifying, filtering or exhausting device to the corresponding equipment. However, with respect to an air purifying, filtering, or exhausting apparatus, etc., there are problems in that the occupied space is large, the filtering efficiency is low, and the installation is inconvenient.

Disclosure of utility model

The embodiment of the application provides a 3D printer, which can purify gas generated in the running process of the 3D printer through a purifying device matched with the 3D printer, optimize the structure of the purifying device, reduce the occupied space, and improve the filtering efficiency and the installation convenience.

In a first aspect, an embodiment of the present application provides a 3D printer, the 3D printer including:

The printing device comprises a shell, wherein an accommodating cavity is formed in the shell, a printing head, a printing platform and a driving device are arranged in the accommodating cavity, the printing head is arranged above the printing platform, the driving device is used for driving the printing head and the printing platform to generate relative displacement, and the printing head is used for extruding materials to print a model;

The purification device is arranged on the shell, and comprises an air outlet, an air inlet and an air flow channel between the air outlet of the purification device and the air inlet of the purification device, wherein the air inlet of the purification device faces the accommodating cavity and is communicated with the accommodating cavity;

The airflow channel comprises a filtering component and a centrifugal fan, and the filtering component is positioned on the air inlet side of the centrifugal fan;

The filter component is used for purifying air entering from the ventilation hole in the accommodating cavity, and the centrifugal fan is used for conveying the purified air from the air inlet side of the centrifugal fan to the air outlet side of the centrifugal fan.

In the embodiment of the application, the corresponding centrifugal fans are arranged in the purification device, and the flattening design can be realized through the characteristics of the centrifugal fans, so that the occupied space of the purification device in the 3D printer is reduced, and meanwhile, the wind pressure of the centrifugal fans is large, so that the purification efficiency can be effectively improved.

In combination with the first aspect, in a first possible implementation manner, the filtering assembly further includes a partition board, the partition board is disposed between the filter core and the centrifugal fan, an opening corresponding to the air inlet of the centrifugal fan is disposed on the partition board, and a plurality of first diversion ribs which are radially distributed with the opening as a center are disposed on one surface of the partition board facing the filter core, and are used for guiding the purified air to the opening of the partition board, and the size of the opening of the partition board is greater than or equal to that of the air inlet of the centrifugal fan.

In the embodiment of the application, the filter element is larger than the air inlet of the centrifugal fan, and the air flow is guided by the plurality of first guide ribs, so that the air flow which is not directly led to the air inlet of the centrifugal fan can be guided to the air inlet of the centrifugal fan, and the air purification efficiency is improved.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a second possible implementation manner, the filter assembly includes a filter element cover and a filter element disposed between the filter element cover and the partition plate, where the filter element cover has a plurality of ventilation holes, and the filter element is used for purifying air entering from the ventilation holes into the accommodating cavity.

In the embodiment of the application, the filter element cover has a protective effect on the filter element.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a third possible implementation manner, the filter element cover and the partition board form a space for accommodating the filter element, and the filter element cover and the partition board cooperate to make the filter element abut against the plurality of first guide ribs of the partition board, so that an air duct guided by the plurality of first guide ribs and directed to an opening of the partition board is formed between the filter element and the partition board.

In the embodiment of the application, the filter element is fixed through the filter element cover on one hand, and the filter element is abutted on the plurality of first guide ribs of the partition plate through the mutual matching between the filter element cover and the partition plate on the other hand, so that the drainage effect of each first guide rib is improved while the space occupation is reduced, and the effectiveness of air purification is further improved.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a fourth possible implementation manner, the filter element cover has an open state and a closed state, and the filter element cover is used for protecting the filter element in the closed state, and enables the filter element to be taken out in the open state.

In the embodiment of the application, the filter element can be freely taken out to replace the waste filter element while the filter element is protected by the opening and closing states of the filter element cover.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a fifth possible implementation manner, the filter element cover is provided with a plurality of buckles, and the plurality of buckles are matched with buckle holes on the partition board to perform buckle connection.

In the embodiment of the application, the filter element cover can be effectively fixed through the mutual matching between the buckle on the filter element cover and the buckle hole on the partition plate, so that the effectiveness of filter element protection is further improved.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a sixth possible implementation manner, a face, facing the filter element, of the filter element cover is provided with a plurality of second guide ribs, the second guide ribs are radially distributed with a first position of the filter element cover as a center, the first position is opposite to an opening of the partition board, and the plurality of second guide ribs are abutted to the filter element, so that an air duct, guided by the plurality of second guide ribs, pointing to the first position is formed between the filter element and the filter element cover.

In the embodiment of the application, the plurality of guide ribs are arranged on one surface of the filter element cover facing the filter element, so that the filter element cover is abutted with the filter element when the air flow is guided, the effectiveness of the air flow guiding is improved, and the space occupation is reduced.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a seventh possible implementation manner, the plurality of ventilation holes are unevenly distributed on the filter element cover, where a ventilation hole density of a first area on the filter element cover is smaller than a ventilation hole density of a second area, where the first area is an area facing the opening of the partition board, and the second area is an area on the filter element cover except for the first area.

In the embodiment of the application, as the first area is a strong wind area, the air flow of each area is balanced by arranging the ventilation holes which are unevenly distributed on the filter element, so that the integral utilization efficiency of the filter element is improved, and the performance and the service life of the purifying device are improved.

With reference to the first aspect or any one of the foregoing possible implementation manners, in an eighth possible implementation manner, a vent density of the first area is zero, and the plurality of vents are only disposed on the second area.

According to the embodiment of the application, through the differentiated design, good ventilation can be provided, the filtering effect of the filter element is ensured, and the performance and the service life of the purification device are improved.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a ninth possible implementation manner, the purifying device further includes a flow guiding assembly, where at least one air outlet is provided as an air outlet of the purifying device, and an air inlet of the flow guiding assembly is communicated with an air outlet of the centrifugal fan.

In the embodiment of the application, the air flow can be effectively guided by the arrangement of the flow guide component, and the purification effect and energy efficiency performance of the purification device are improved.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a tenth possible implementation manner, an air outlet direction of an air outlet of the purifying device at least includes one of being perpendicular to the first direction and opposite to the first direction; the first direction is the air inlet direction of the air inlet of the purifying device, and the air outlet of the purifying device faces the accommodating cavity and is communicated with the accommodating cavity.

In embodiments of the present application, the above-described design of the purification device may enable cyclic filtration.

With reference to the first aspect or any one of the foregoing possible implementation manners, in an eleventh possible implementation manner, an air outlet direction of an air outlet of the purifying device includes at least one of being perpendicular to and the same as the first direction; the first direction is the air inlet direction of the air inlet of the purifying device, and the air outlet of the purifying device faces to the outside of the 3D printer and is communicated with air outside the 3D printer.

In the embodiment of the application, the exhaust gas of the 3D printer can be effectively treated and discharged by guiding the airflow to the outside of the 3D printer.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a twelfth possible implementation manner, the mating relationship between the purifying device and the accommodating cavity includes one of the following: the purifying device is completely arranged in the accommodating cavity; the purifying device is completely arranged outside the accommodating cavity; the purification device is partially positioned inside the accommodating cavity and partially positioned outside the accommodating cavity.

In the embodiment of the application, through different matching modes, the purifying device and the accommodating cavity of the 3D printer can flexibly adapt to various space limitations and requirements, provide effective purifying effect and ensure normal operation and maintenance of equipment.

Drawings

Fig. 1a is a schematic structural diagram of a 3D printer according to an embodiment of the present application;

Fig. 1b is a schematic structural diagram of a 3D printer according to an embodiment of the present application;

Fig. 1c is a schematic structural diagram of a 3D printer according to an embodiment of the present application;

fig. 1D is a schematic structural diagram of a 3D printer according to an embodiment of the present application;

FIG. 2 is a schematic plan view of a purification apparatus provided in an embodiment of the present application;

FIG. 3a is a schematic plan view of a baffle assembly provided in an embodiment of the present application;

FIG. 3b is a schematic plan view of a baffle assembly provided in an embodiment of the present application;

FIG. 3c is a schematic plan view of a baffle assembly provided in an embodiment of the present application;

FIG. 3d is a schematic plan view of a baffle assembly provided in an embodiment of the present application;

FIG. 4a is a schematic plan view of a separator provided in an embodiment of the present application;

FIG. 4b is a schematic plan view of a separator provided in an embodiment of the present application;

FIG. 5 is a schematic view of a cartridge provided in an embodiment of the present application;

FIG. 6 is a schematic view showing the structure of a purifying apparatus provided in the embodiment of the present application;

FIG. 7a is a schematic view of a cartridge cover provided in an embodiment of the present application;

FIG. 7b is a schematic view of the structure of a cartridge cover provided in an embodiment of the present application;

fig. 7c is a schematic structural view of a cartridge cover provided in an embodiment of the present application.

Detailed Description

The implementation of the technical scheme of the application is further described in detail below with reference to the accompanying drawings.

The structure and reference numerals related to the present application are explained and illustrated below:

3D printer: housing 10, purification device 20, and supply device 30

A shell: printhead 1011, print platform 1012, and driving device 1013

Purification device 20: filter assembly 201, centrifugal fan 202, and flow guide assembly 203

The filter assembly 201: cartridge cover 2011, cartridge 2012, separator 2013

Separator 2013: first guide rib 20131 and buckle hole 20132

Cartridge cover 2011: vent 20111, second guide rib 20112, buckle 20113, and cartridge cover handle 20114

Cartridge 2012: primary filter mesh 20121, HEPA high efficiency filter mesh 20122, activated carbon filter core 20123, sealing foam 20124, filter core handle 20125

In the embodiment of the application, the waste gas generated in the operation process of the 3D printer can be purified by the purification device arranged on the 3D printer, so that harmful substances generated in the operation process of the 3D printer are subjected to harmless treatment. For the 3D printer 1 in the embodiment of the present application, it may include:

A housing 10, the housing 10 having a receiving chamber 101 therein, the receiving chamber 101 having a printhead 1011, a print platform 1012, and a driving device 1013, the printhead 1011 being disposed above the print platform 1012, the driving device 1013 being configured to drive relative displacement between the printhead 1011 and the print platform 1012, the printhead 1011 being configured to extrude material to print a model;

The purification device 20 is arranged on the shell 10, the purification device 20 comprises an air outlet, an air inlet and an air flow channel between the air outlet of the purification device 20 and the air inlet of the purification device 20, and the air inlet of the purification device 20 faces the accommodating cavity 101 and is communicated with the accommodating cavity 101; the airflow channel comprises a filter assembly 201 and a centrifugal fan 202, and the filter assembly 201 is positioned on the air inlet side of the centrifugal fan 202; the filter assembly 201 is used for purifying air in the accommodating cavity 101 entering from the vent 20111, and the centrifugal fan 202 is used for conveying the purified air from the air inlet side of the centrifugal fan 202 to the air outlet side of the centrifugal fan 202. The airflow path includes a filter assembly 201 and a centrifugal fan 202 is referred to as: the filter assembly 201 may be located within or part of the airflow path; the centrifugal fan 202 may be located within or part of the airflow path.

The housing 10 of the 3D printer forms a corresponding accommodating cavity 101, and a printhead 1011, a printing platform 1012 and a driving device 1013 are disposed in the accommodating cavity 101, the printhead 1011 is disposed above the printing platform 1012, the driving device 1013 is used for driving the printhead 1011 and the printing platform 1012 to generate relative displacement, and the printhead 1011 is used for extruding materials to print a model. Meanwhile, in the running process of the 3D printer, waste gas generated in the running process of the 3D printer can be purified through a purifying device arranged on the 3D printer, so that the health of a user is guaranteed. In addition, the 3D printer may further comprise a corresponding feeding device 30, and the feeding device 30 may be used to provide raw materials required in the model printing process.

In some possible examples, the purification device is arranged at a position corresponding to the 3D printer to purify the exhaust gas in the operation process of the 3D printer, referring to fig. 1a, which shows the 3D printer without the purification device, referring to fig. 1b, which shows the purification device is completely arranged inside the accommodating cavity 101 of the 3D printer, referring to fig. 1c, which shows the purification device is completely arranged outside the accommodating cavity 101 of the 3D printer, and referring to fig. 1D, which shows the purification device partially positioned inside the accommodating cavity 101 and partially positioned inside the accommodating cavity 101, the purification device can be flexibly matched with the accommodating cavity 101 of the 3D printer through various design modes, so that the purification device is suitable for different application scenarios and the universality of the purification device is improved.

The structure of the purification device will be described in detail with reference to fig. 2 to 7 c.

In the embodiment of the application, the 3D printer is easy to generate smoke dust, VOC and other gases which are harmful to human health in the operation process, and the purification device 20 arranged on the 3D printer can effectively filter harmful gases generated in the operation process of the 3D printer, thereby ensuring the physical health of users.

Optionally, the mating relationship between the purification device 20 and the receiving chamber of the 3D printer includes one of: the purifying device 20 is completely installed inside the accommodating cavity; the purifying device 20 is completely arranged outside the accommodating cavity; the purification device 20 is located the inside that holds the chamber partially, and part is located the outside that holds the chamber, through different cooperation modes, purification device 20 and 3D printer hold the chamber and can adapt to various space restriction and demand in a flexible way, provide effectual purifying effect to ensure the normal operating and the maintenance of equipment.

Further, for the purifying apparatus 20, the outer shape may be set to be one of rectangular, circular and elliptical in cross section according to actual demands, to meet demands of different scenes.

In some possible embodiments, the direction of the air out of the air outlet of the purification device 20 may include one of perpendicular to the first direction, and opposite; wherein, the air inlet direction that first direction can be purifier 20's air intake, purifier 20's air outlet orientation holds the chamber to with hold the chamber intercommunication, through the design of air-out air inlet direction and with the inside of air current guide back 3D printer, can realize air cycle, realize circulating filtration.

In some possible embodiments, the first direction may be an air inlet direction of the air inlet of the purifying device 20, and the air outlet of the purifying device 20 faces to the outside of the 3D printer and is communicated with air outside the 3D printer, so that exhaust gas of the 3D printer can be effectively treated and discharged by guiding the air flow to the outside of the 3D printer.

Optionally, to the air outlet direction of the air outlet of the purification device 20, the design of the air outlet direction can be realized by arranging a flow guiding component 203 on the purification device 20, the flow guiding component 203 is provided with at least one air outlet as the air outlet of the purification device 20, the air inlet of the flow guiding component 203 is communicated with the air outlet of the centrifugal fan 202, and the air flow at the air outlet of the centrifugal fan 202 is guided by the flow guiding component 203, so that the air flow can be effectively guided, and the purification effect and the energy efficiency performance of the purification device 20 are improved.

In an example, referring to fig. 2, a schematic structural diagram of a purifying device provided by an embodiment of the present application is shown, and in ①, a flow guiding assembly with an air outlet direction being in the same direction as an air inlet direction of the purifying device is shown; ② shows a flow guiding component with the air outlet direction opposite to the air inlet direction of the purification device; a flow guide assembly having an air outlet direction perpendicular to the air inlet direction of the purification device is shown in ③. Specifically, the air in the 3D printer accommodation cavity enters from the air inlet of the purification device, is purified by the filtering component, so that purified air flows out from the air outlet of the centrifugal fan, and is guided into the corresponding environment by the flow guiding component.

Further, referring to fig. 3a, there is shown a purification apparatus 20 without a flow guide assembly 203, in which case the air outlet direction of the purification apparatus 20 is the air outlet direction of the centrifugal fan 202; referring to fig. 3b, there is shown a flow guide assembly 203 provided with an air outlet direction co-directional with the air inlet direction of the purification apparatus 20, in which case the air outlet of the purification apparatus 20 faces out of the 3D printer and communicates with the air outside the 3D printer; referring to fig. 3c, there is shown a flow guide assembly 203 provided with an air outlet direction opposite to the air inlet direction of the purification device 20, in which case the air outlet of the purification device 20 is directed towards and in communication with the receiving chamber by directing the air flow back into the interior of the 3D printer; referring to fig. 3D, a flow guiding assembly 203 having an air outlet direction perpendicular to an air inlet direction of the purifying device 20 is shown, in this case, the purifying device 20 can exhaust filtered air through two air outlets of the flow guiding assembly 203, and the air outlet of the purifying device 20 faces to the outside of the 3D printer and is communicated with air outside of the 3D printer, or faces to the inside of the 3D printer and is communicated with an inner cavity of the 3D printer, so that the multi-directional air outlet design of the purifying device 20 can provide greater flexibility and adaptability, so that the purifying device can be adapted to different environments and application scenes, and the universality of the purifying device 20 is improved.

For the purification device 20, the filter assembly 201 related to the purification device can comprise a partition 2013, the partition 2013 is arranged between the filter element 2012 and the centrifugal fan 202, an opening corresponding to the air inlet of the centrifugal fan 202 is formed in the partition 2013, a plurality of first guide ribs 20131 which are centered on the opening and are radially distributed are arranged on one surface of the partition 2013 facing the filter element 2012, the opening of the partition 2013 is larger than or equal to the air inlet of the centrifugal fan 202, and therefore the filter element 2012 is larger than the air inlet of the centrifugal fan 202, and air flow which does not directly flow to the air inlet can be guided to the air inlet through the plurality of first guide ribs 20131, so that air flow can flow to the filter assembly 201, and the effectiveness of air purification is improved.

Optionally, the size of the side of the partition 2013 facing the filter element 2012 may be greater than the size of the air inlet of the centrifugal fan 202, and the size of the side of the partition 2013 facing the filter element 2012, the size of the filter element cover 2011, and the size of the cross section of the filter element 2012 parallel to the filter element cover 2011 may be consistent, so that the rationality of the fit among the filter element cover 2011, the filter element 2012, the partition 2013, the centrifugal fan 202, and the like is ensured by setting the corresponding sizes.

Optionally, the center of the cartridge cover 2011, the center of the cartridge 2012, the center of the partition 2013, and the center of the centrifugal fan 202 are coaxial, so as to ensure the rationality of the fit between the cartridge cover 2011, the cartridge 2012, the partition 2013, the centrifugal fan 202, and the like.

In an example, referring to fig. 4a, a schematic structural diagram of a partition board provided by an embodiment of the present application is shown, for the partition board 2013, a plurality of first guide ribs 20131 with openings as the center and being distributed in a radial manner may be disposed on a surface facing the filter element 2012, for example, 12 first guide ribs 20131 may be disposed to divide a surface facing the filter element 2012 into 12 areas, so that airflow is concentrated to the openings, avoiding dissipation of airflow far from the openings, and improving gas filtering efficiency. Meanwhile, referring to fig. 4b, for the opening on the partition 2013, the radius of the opening may be larger than the radius of the air inlet of the centrifugal fan 202, so that the air flow without the through air inlet may be guided to the air inlet. In addition, on the partition 2013, a plurality of fastening holes 20132 may be provided to cooperate with the fastening 20113 on the filter element cover 2011 to fix the filter element cover 2011 on the partition 2013.

It should be noted that, the number of the first guide ribs may be set according to an application scenario, for example, set to 8, 10, 14, 16, etc., which is not limited in the embodiment of the present application.

Wherein, filter assembly 201 can also include filter core lid 2011 and set up the filter core 2012 between filter core lid 2011 and baffle 2013, have a plurality of ventilation holes 20111 on the filter core lid 2011, filter core 2012 is used for purifying the air that holds the chamber that gets into from ventilation hole 20111, circulates the air current through a plurality of ventilation holes 20111 to realized purifying the air current through filter core 2012. Optionally, for the filter core, a primary filter screen 20121, a HEPA (HIGH EFFICIENCY particle AIR FILTER) efficient filter screen 20122, an activated carbon filter core 20123 and the like can be sequentially arranged along the air inlet direction, large particles can be filtered through the primary filter screen, tiny particles can be filtered through the HEPA efficient filter screen, VOC gas can be filtered through the activated carbon filter layer, and meanwhile, a layer of sealing foam 20124 can be wrapped on the peripheries of the primary filter screen, the HEPA efficient filter screen, the activated carbon filter layer and the like and is abutted with the partition 2013, so that harmful substance-containing air is prevented from escaping from a peripheral gap.

Optionally, a filter cover 2011 is disposed at the air inlet of the purification device 20.

In one example, referring to fig. 5, a schematic structural diagram of a filter cartridge provided in an embodiment of the present application is shown, the filter cartridge 2012 includes a primary filter 20121, a HEPA high efficiency filter 20122, an activated carbon filter 20123, and filters larger particulate matter, tiny particulate matter, and VOC gas, respectively; the cross section of the filter element 2012 is rectangular (or square or circular), the periphery of the filter element 2012 is wrapped with sealing foam 20124, and the sealing foam 20124 is tightly pressed with a baffle 2013, so that air containing harmful substances is prevented from escaping from a peripheral gap. The cartridge 2012 is provided with a cartridge pull 20125 to facilitate cartridge replacement for removal of the cartridge 2012 from the bulkhead 2012.

Further, the filter element cover 2011 and the partition plate 2013 form a space for accommodating the filter element 2012, the filter element cover 2011 is matched with the partition plate 2013 to enable the filter element 2012 to be abutted on the plurality of first guide ribs 20131 of the partition plate 2013, so that an air channel which is guided by the plurality of first guide ribs 20131 and is directed to the opening of the partition plate 2013 is formed between the filter element 2012 and the partition plate 2013, the filter element 2012 is fixed on one hand, and on the other hand, the filter element cover 2011 and the partition plate 2013 are matched with each other, so that the filter element 2012 is abutted on the plurality of first guide ribs 20131 of the partition plate 2013, the occupied space is reduced, the drainage effect of each first guide rib 20131 is improved, and the effectiveness of air purification is further improved.

Further, the cartridge cover 2011 has two states of opening and closing, the cartridge cover 2011 serving to protect the cartridge 2012 in the closed state, and enabling the cartridge 2012 to be taken out in the open state. Meanwhile, in order to prevent the filter element cover 2011 from separating from the partition 2013, a plurality of buckles 20113 are arranged on the filter element cover 2011, and the buckles 20113 are matched with the buckle holes 20132 on the partition 2013 to connect with the buckles 20113, so that the filter element cover 2011 can be effectively fixed through the mutual matching between the buckles 20113 on the filter element cover 2011 and the buckle holes 20132 on the partition 2013, and the effectiveness of protecting the filter element 2012 is further improved.

Further, a plurality of second guide ribs 20112 are arranged on one surface of the filter element cover 2011, facing the filter element 2012, of the second guide ribs 20112, the second guide ribs 20112 are radially distributed by taking the first position of the filter element cover 2011 as the center, the first position is opposite to the opening of the partition 2013, the plurality of second guide ribs 20112 are abutted to the filter element 2012, an air channel which is guided by the plurality of second guide ribs 20112 and is directed to the first position is formed between the filter element 2012 and the filter element cover 2011, and therefore a plurality of guide ribs are arranged on one surface of the filter element cover 2011, facing the filter element 2012, air flow guiding is achieved, and the air channel is abutted to the filter element 2012, so that the effectiveness of air flow guiding is improved, and space occupation is reduced.

In one example, referring to fig. 6, there is shown a schematic structural diagram of a purifying apparatus provided in an embodiment of the present application, and for a cartridge cover 2011 on the purifying apparatus 20, a plurality of ventilation holes 20111 are provided, and air in the accommodating cavity enters the purifying apparatus 20 through the ventilation holes 20111 and is purified by the cartridge 2012 through the cartridge 2012. Meanwhile, a corresponding filter element cover handle 20114 can be arranged on the filter element cover 2011, so that the filter element cover 2011 can be conveniently controlled to be opened and closed, and the filter element 2012 can be conveniently taken out under the condition that the filter element cover 2011 is opened. In addition, 4 buckles 20113 on the filter element cover 2011 can mutually cooperate with 4 buckle holes 20132 corresponding to the partition 2013, so that the filter element cover 2011 can be effectively fixed, and the effectiveness of the protection of the filter element 2012 is further improved.

It should be noted that, because the air inlet of the centrifugal fan 202 is smaller than the opening of the partition 2013, the air flow entering the purifying device 20 is easy to have uneven air inlet intensity, and accordingly, the air flow entering the purifying device 20 can be more uniform by performing a corresponding optimization design on the vent 20111 on the filter element cover 2011.

In a possible implementation manner, the plurality of ventilation holes 20111 are unevenly distributed on the filter element cover 2011, wherein the density of ventilation holes 20111 in a first area on the filter element cover 2011 is smaller than that of ventilation holes 20111 in a second area, the first area is an area opposite to an opening of the partition 2013, and the second area is an area on the filter element cover 2011 except the first area, wherein the density of ventilation holes refers to the number of ventilation holes in a unit area, so that by arranging unevenly distributed ventilation holes 20111 on the filter element 2012, the ventilation hole density of a low-air-in-strength area is improved, the ventilation hole density of a high-air-in-strength area is reduced, the utilization efficiency of the filter element 2012 is improved, the filtering effect of the filter element 2012 is ensured while good ventilation is provided, and the performance and the service life of the purifying device 20 are improved.

In a specific implementation, since the first area is an area facing the opening of the partition 2013, that is, an area on the same axis as the center of the centrifugal fan 202, the air inlet of the centrifugal fan 202 can face the first area, so that the vent 20111 on the first area can have stronger air flow suction, the air flow of the area can be reduced by reducing the density of the vent holes in the area, so that the air flow of the area and the air flow of other areas are uniformly distributed, and the utilization efficiency of the filter element is promoted. Alternatively, for the vent 20111 of the first area and the vent 20111 of the second area, in addition to the differential arrangement of the densities of the vent 20111, the radius of the vent 20111 may be differently arranged, for example, the vent 20111 of the first area may be arranged to have a radius smaller than the radius of the vent 20111 of the second area, and vice versa, which is not a limitation of the embodiment of the present application.

Furthermore, in another possible implementation, the vent 20111 density of the first area may be zero, with the plurality of vents 20111 being disposed only on the second area, without any vents 20111 being disposed in the first area.

In an example, referring to fig. 7a, 4 guide ribs may be disposed on a surface of the filter element cover 2011 facing the filter element 2012, where the guide ribs are radially distributed with a first position of the filter element cover 2011 as a center, and divide the vent 20111 into 4 areas, so that airflow may flow along a direction of the guide ribs, avoiding dissipation of airflow far from the first position, improving filtering efficiency of the filter element 2012, and the air inlet of the centrifugal fan 202 may be opposite to the first position, or the first position may be located in the first area, or the first position may be the first area. Wherein, can set up the ventilation hole 20111 of different ventilation hole 20111 density on the region of first position and outside the first position, inhomogeneous distribution design can improve purifier 20's performance and life. Or any vent 20111 may not be provided in the first position.

According to the embodiment of the application, the purifying device 20 can be arranged at the corresponding position of the 3D printer, so that the gas generated in the accommodating cavity in the operation process of the 3D printer can be purified. Specifically, during the operation of the centrifugal fan 202, the gas in the accommodating cavity enters from the vent 20111 of the purifying device 20 and is purified by the filter element 2012, and the air after the evolution of the filter element 2012 flows out through the air outlet of the centrifugal fan 202 and is guided to a corresponding position through the drainage component, such as being guided back into the accommodating cavity or being discharged into the atmosphere, thereby realizing the air purification of the 3D printer.

Claims (13)

1. A 3D printer, the 3D printer comprising:

The printing device comprises a shell, wherein an accommodating cavity is formed in the shell, a printing head, a printing platform and a driving device are arranged in the accommodating cavity, the printing head is arranged above the printing platform, the driving device is used for driving the printing head and the printing platform to generate relative displacement, and the printing head is used for extruding materials to print a model;

The purification device is arranged on the shell, and comprises an air outlet, an air inlet and an air flow channel between the air outlet of the purification device and the air inlet of the purification device, wherein the air inlet of the purification device faces the accommodating cavity and is communicated with the accommodating cavity;

The air flow channel comprises a filter assembly and a centrifugal fan, the filter assembly is positioned on the air inlet side of the centrifugal fan, and the filter assembly comprises a plurality of ventilation holes;

The filter component is used for purifying air entering from the ventilation hole in the accommodating cavity, and the centrifugal fan is used for conveying the purified air from the air inlet side of the centrifugal fan to the air outlet side of the centrifugal fan.

2. The 3D printer of claim 1, wherein the filter assembly comprises a cartridge cover, a partition, and a cartridge disposed between the cartridge cover and the partition, the cartridge for purifying air entering the receiving cavity from the vent.

3. The 3D printer according to claim 2, wherein the partition plate is disposed between the filter element and the centrifugal fan, an opening corresponding to the air inlet of the centrifugal fan is disposed on the partition plate, and a plurality of first diversion ribs which are radially distributed with the opening as a center are disposed on one surface of the partition plate facing the filter element, and are used for guiding the purified air to the opening of the partition plate, and the size of the opening of the partition plate is greater than or equal to the size of the air inlet of the centrifugal fan.

4. A 3D printer according to claim 3, wherein the cartridge cover and the partition form a space for accommodating the cartridge, and the cartridge cover cooperates with the partition to abut the cartridge against the plurality of first guide ribs of the partition, so that an air duct directed by the plurality of first guide ribs to the opening of the partition is formed between the cartridge and the partition.

5. The 3D printer of claim 2 or 4, wherein the cartridge cover has two states, an open and a closed state, the cartridge cover in the closed state for protecting the cartridge, the cartridge in the open state enabling removal of the cartridge.

6. The 3D printer of claim 5, wherein the cartridge cover is provided with a plurality of snaps that cooperate with snap holes on the separator for snap connection.

7. The 3D printer of claim 6, wherein a plurality of second guide ribs are disposed on a surface of the filter element cover facing the filter element, the second guide ribs are radially distributed with a first position of the filter element cover as a center, the first position faces the opening of the partition plate, and the plurality of second guide ribs are abutted to the filter element, so that an air duct guided by the plurality of second guide ribs and pointing to the first position is formed between the filter element and the filter element cover.

8. The 3D printer of claim 7, wherein the plurality of ventilation holes are unevenly distributed on the cartridge cover, wherein a first area of the cartridge cover having a ventilation hole density that is less than a ventilation hole density of a second area of the cartridge cover, the first area being an area facing the opening of the separator, the second area being an area of the cartridge cover other than the first area.

9. The 3D printer of claim 8, wherein the vent density of the first region is zero and the plurality of vents are disposed only on the second region.

10. The 3D printer of claim 1, wherein the purification device further comprises a flow guiding assembly, the flow guiding assembly is provided with at least one air outlet as the air outlet of the purification device, and the air inlet of the flow guiding assembly is communicated with the air outlet of the centrifugal fan.

11. The 3D printer of claim 10, wherein the air outlet direction of the air outlet of the purifying device comprises at least one of perpendicular to the first direction and opposite; the first direction is the air inlet direction of the air inlet of the purifying device, and the air outlet of the purifying device faces the accommodating cavity and is communicated with the accommodating cavity.

12. The 3D printer of claim 10, wherein the air outlet direction of the air outlet of the purifying device comprises at least one of perpendicular to the first direction and the same; the first direction is the air inlet direction of the air inlet of the purifying device, and the air outlet of the purifying device faces to the outside of the 3D printer and is communicated with air outside the 3D printer.

13. The 3D printer of claim 1, wherein the mating relationship between the purge device and the receiving cavity comprises one of: the purifying device is completely arranged in the accommodating cavity; the purifying device is completely arranged outside the accommodating cavity; the purification device is partially positioned inside the accommodating cavity and partially positioned outside the accommodating cavity.