WO2017162118A1

WO2017162118A1 - 3d printing environmental protection device

Info

Publication number: WO2017162118A1
Application number: PCT/CN2017/077304
Authority: WO
Inventors: 朱叶周; 刘泽坚
Original assignee: 广州安腾达化工科技有限公司
Priority date: 2016-03-21
Filing date: 2017-03-20
Publication date: 2017-09-28
Also published as: CN205601175U

Abstract

A 3D printing environmental protection device, comprising a housing (10), the housing (10) being provided with an inner cavity capable of accommodating a 3D printing assembly, the housing (10) being capable of being opened and closed, a purifier (20) being mounted on the housing (10), the purifier (20) comprising a filter cartridge and an air driving device which are connected, a first air port (11) and a second air port (12) also being arranged on the housing (10), the first air port (11) being connected to the inner cavity and the filter cartridge, the second air port (12) being connected to the inner cavity and the air driving device, air in the inner cavity achieving internal circulation via the first air port (11), the filter cartridge, the air driving device and the second air port (12). As well as purifying the air and reducing noise, the present device also enables an internal printing environment to be relatively stable, so as to ensure product quality. The present device also increases the utilisation rate of the filter cartridge, improves the purification effect, reduces the replacement frequency of the filter cartridge, and decreases costs.

Description

3D printing environmental protection equipment

Technical field

The utility model relates to the field of 3D printing equipment, in particular to a 3D printing environment protection device capable of accommodating a 3D printing component and performing internal circulation purification of internal air.

Background technique

The desktop-level and miniaturized 3D printers in the prior art are widely used in the daily life or operation of ordinary individuals, families, schools or enterprises. The outer casings of these printers usually use an open structure, so that the user can observe during the printing process. And operation. However, this open type 3D printer is prone to environmental pollution problems such as smoke, dust, odor, harmful gases and even noise during 3D printing, causing certain irritation and damage to the human body. Ultrafine particle emissions from desktop 3D printers (authors Brent Stephens, Parham Azimia, Zeineb El Orch and Tiffanie Ramosa), published in the world's leading academic journal ScienceDirect, show that ultrafine particles (ultrafine particles) are produced during 3D printing. , referred to as UFP), such as particle size below 100nm, typically in the range of 10 ~ 100nm, human exposure to this environment for a long time, will stimulate the body's throat, lungs and brain, causing long-term health damage.

Although some 3D printers have a closed structure and can filter some dust, they use a solution that directly filters the air inside the 3D printer and discharges it to the outside. This will destroy the original to some extent. The stability of the 3D printing environment causes changes in temperature and pressure.

It has been studied that the preferred temperatures required for different finished products are different. For example, in printing PLA consumables, the temperature of the printing environment is kept below 30 ° C. The quality of the finished product is better. When printing ABS consumables, the temperature of the printing environment is 50-60. °C finished product quality is better. In the existing closed 3D printer, the internal air exchanges with the outside air during filtration, which easily damages the internal printing environment temperature and affects the quality of the finished product. In addition, the exchange of internal air and outside air can also cause the internal printing environment to be unstable, which may also affect the quality of the finished product.

In addition, in the existing filtration scheme, the composition and flow rate of the internal air are unstable due to the influence of the outside air, and it is difficult to estimate the time for the filter cartridge to be fully used, so that the filter cartridge is easily replaced in the case of insufficient use, and the number of the filter cartridge is increased. Cost; on the contrary, it may also be due to excessive use of the filter element, resulting in poor filtering effect, or even the purpose of filtration.

Utility model content

The utility model aims to provide a 3D printing environmental protection device capable of accommodating a 3D printing component and internally circulating the internal air to purify air and reduce noise while maintaining a relatively stable 3D printing environment.

The invention provides a 3D printing environment protection device, comprising a casing, the casing has a cavity for accommodating a 3D printing component, and the casing can be opened and closed; the casing is provided with a purifier, The purifier includes a connecting filter element and a blower; The housing further has a first tuyere and a second tuyere, the first tuyere communicates with the inner cavity and the filter element, and the second tuyere communicates with the inner cavity and the air cleaner; the air of the inner cavity passes through the first The tuyere, the filter element, the blower and the second tuyere achieve internal circulation.

In a preferred embodiment of the invention, the housing has a transparent window that is viewable from the outside.

In a preferred embodiment of the present invention, the filter element is located above the air blower; the first air outlet is an air inlet, the second air outlet is an air outlet, and the first air outlet is located above the second air outlet. .

In a preferred embodiment of the present invention, the air blower is specifically a blower or a pressure reducer.

In a preferred embodiment of the present invention, the purifier has a first filter port with a horizontal direction of the air inlet direction, and a second filter port with a vertical downward direction of the air outlet direction; the first filter port and the filter element Connected and installed at the first tuyere, the second filter port is in communication with the air blower and is installed at the second tuyere.

In a preferred embodiment of the present invention, the second filter port is in the shape of an inverted bucket.

In a preferred embodiment of the invention, the first filter port is provided with a fence.

In a preferred embodiment of the present invention, the purifier further has a heat dissipation fan and an adjustment knob; the heat dissipation fan is mounted above the filter element, and the adjustment knob is electrically connected to the air blower to adjust the power of the air blower.

In a preferred aspect of the present invention, the housing is a tented housing having a zipper door to open or close the inner cavity.

In a preferred embodiment of the present invention, the housing is a box type housing having a handle door to open or close the inner cavity

The 3D printing environmental protection device proposed by the utility model has at least the following beneficial effects:

1. The inner cavity of the housing can be used to accommodate 3D printing components. When performing 3D printing, it can be circulated through the air. In addition to purifying the air and reducing noise, the internal printing environment can be relatively stable to ensure the quality of the finished product. .

2. Due to the internal circulation, the composition and flow rate of the internal air are relatively stable and are not affected by the outside air. Therefore, it is possible to estimate the time for the filter element to be fully used until the filter element is fully adsorbed, thereby improving the utilization rate of the filter element and Purification effect, reducing the frequency of filter replacement, while reducing costs.

3, the structure is simple, easy to disassemble and carry, the application prospect is very wide.

DRAWINGS

FIG. 1 is a schematic perspective structural view of a 3D printing environmental protection device according to Embodiment 1.

FIG. 2 is a schematic plan view showing the structure of the 3D printing environmental protection device according to the first embodiment.

Figure 3 is a schematic rear perspective view of Figure 2.

4 is a schematic perspective view of a 3D printing environment protection device according to Embodiment 2.

FIG. 5 is a schematic plan view showing the structure of the 3D printing environment protection device proposed in the second embodiment.

Figure 6 is a top plan view of Figure 5.

Figure 7 is a schematic perspective view of the right perspective of Figure 5.

FIG. 8 is a schematic perspective structural view of a purifier of the 3D printing environmental protection device proposed in the fourth embodiment.

9 is a schematic plan view showing the planar structure of a purifier of the 3D printing environmental protection device proposed in the fourth embodiment.

Fig. 10 is a schematic view showing the comparison of the ultrafine dust concentration changes before and after the use of the 3D printing environmental protection device in the test example.

FIG. 11 is a schematic diagram showing the effect of the 3D printing environmental protection device for removing toxic gases for different 3D printing consumables in the test example.

Figure 1 to Figure 9: 10 - housing, 11 - first tuyere, 12 - second tuyere, 13 - transparent window, 14 - holder, 15-way wheel, 20 - purifier, 21 - first filter Port, 22-second filter port, 23-cooling fan, 24-turn knob.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the drawings and embodiments.

Embodiment 1

Referring to FIG. 1 to FIG. 3 , a 3D printing environmental protection device according to an embodiment includes a housing 10 having a cavity for accommodating a 3D printing component, and the housing 10 can be opened and closed to enable 3D printing. The component is placed in or removed from the lumen. The 3D printing component may refer to a whole 3D printer, and may also refer to components of a 3D printer such as a main board, a motor, a mechanical motion device, a print head, a hot bed, etc.; for the former, the 3D printing environmental protection device of the embodiment is an independent For the latter, the 3D printing environmental protection device of the present embodiment will be used as a part of a 3D printer, that is, a casing of a 3D printer. The housing 10 of Figures 1 through 3 is a box housing, which may be of aluminum alloy, plastic, stainless steel or iron, etc., having a handle door to open or close the inner chamber.

The housing 10 has a transparent window 13 that is viewable from the outside to the inner cavity. The housing 10 in FIGS. 1 to 3 has a rectangular parallelepiped design, and a transparent window 13 can be disposed on all four sides thereof.

A purifier 20 is mounted on the housing 10, and the purifier 20 includes a communicating filter element and a blower (not shown); wherein the filter element is preferably a HEPA filter element (ie, a high efficiency air filter element) or a UPLA filter element (ie, an ultra-efficient air) Filter filter), of course, other filter elements capable of purifying air, such as ESP (electrostatic precipitator) filter element or negative ion filter element, etc.; the air blower is preferably an exhaust fan, and a pressure reducer can also be used to enable the air flow filter core Device.

The housing 10 further has a first tuyere 11 and a second tuyere 12, the first tuyere 11 communicates with the inner cavity and the filter element, and the second tuyere 12 communicates with the inner cavity and the air blower; The first tuyere 11, the filter element, the blower, and the second tuyere 12 achieve internal circulation.

In addition, in FIG. 1 to FIG. 3, there is a fixing frame 14 below the casing 10, and a universal wheel 15 is also installed under the fixing frame 14 for carrying.

Embodiment 2

Referring to FIG. 4 to FIG. 7 , a 3D printing environment protection device according to an embodiment includes a housing 10 having a cavity for accommodating a 3D printing component, and the housing 10 can be opened and closed to enable 3D printing. The component is placed in or removed from the lumen. The 3D printing component may refer to a whole 3D printer, and may also refer to components of a 3D printer such as a main board, a motor, a print head, a mechanical motion device, a hot bed, etc.; for the former, the 3D printing environmental protection device of the embodiment is an independent For the latter, the 3D printing environmental protection device of the present embodiment will be used as a part of a 3D printer, that is, a casing of a 3D printer. The housing 10 of Figures 4 to 7 is a tent-type housing, and the material may specifically be cloth, non-woven fabric, oxford or plastic film, etc., having a zipper door to open or close the inner cavity.

The housing 10 has a transparent window 13 that is viewable from the outside to the inner cavity. The housing 10 of Figures 4 to 7 is of a rectangular parallelepiped design with a transparent window 13 on each of its four sides.

It is to be noted that the present invention does not limit the shape, specifications, materials, and the like of the housing of the 3D printing environmental protection device. The box housing of the first embodiment and the tent housing of the second embodiment are only Two preferred options.

Embodiment 3

The third embodiment is further optimized based on the first embodiment or the second embodiment. For details, refer to FIG. 1 to FIG. 3 or FIG. 4 to FIG. 7 :

In the preferred design of the present example, the filter element is located above the air blower, and the first air outlet 11 is an air inlet, the second air outlet 12 is an air outlet, and the first air outlet 11 is located above the second air outlet 12. Thus, in use, the air in the inner cavity forms an air flow under the action of the air blower, and the air flow sequentially circulates through the first air outlet 11, the filter element, the air blower and the second air outlet 12, and the resistance is small.

If the filter element is located below the air blower, that is, the air blower is above, the air filter is driven into the filter element, and the air current collides with the filter element, which will cause a large rebound, thereby disturbing the normal airflow and increasing the resistance. .

Embodiment 4

The fourth embodiment is based on the third embodiment, and further optimized design, specifically can be combined with FIG. 1 to FIG. 3 or with reference to FIG. 4 to FIG. 7, and refer to FIG. 8 and FIG. 9:

The purifier 20 has a first filter port 21 having a horizontal direction of the air inlet direction and a second filter port 22 vertically downward of the air outlet direction; the first filter port 21 is in communication with the filter element and is installed at the first tuyere 11 The second filter port 22 is in communication with the blower and is mounted at the second tuyere 12. The air inlet direction of the first filter port 21 is a horizontal direction, so that the airflow can enter the purifier 20 more smoothly; and the air outlet direction of the second filter port 22 is vertically downward, so that the airflow can enter the inner cavity 10 from the purifier 20. It does not interfere with the airflow entering the purifier 20, so as not to disturb the air flow, and also avoids the impact of direct blowing on the 3D printing assembly on print quality.

In a specific design, in order to avoid clogging caused by smaller wires or other impurities entering the purifier 20 during 3D printing, a fence may be provided at the first filter port 21 to perform preliminary filtering of the airflow; and the second filter port 22 is specific. Can be set to be in the shape of an inverted bucket.

In addition, the purifier 20 of the embodiment may further be provided with a cooling fan 23 and an adjustment knob 24; the cooling fan 23 is installed above the filter element to dissipate heat from the purifier 20 to prevent the temperature from being too high; and the adjustment knob 24 is electrically connected to the air blower. In order to adjust the power of the air blower (when the air blower adopts the exhaust fan, the speed of the exhaust fan is adjusted).

Test case

After testing, the internal circulation purification scheme adopted by the present invention can effectively remove ultra-fine dust (UFP) and toxic gas (TVOC), ensuring that users use 3D printing equipment in a healthy and safe environment.

1, ultra fine dust (UFP)

Test equipment: 3D printing environmental protection device proposed by the invention

Equipment filter: HEPA filter

Test material: commonly used ABS 3D printing supplies

Please refer to FIG. 10. FIG. 10 is a schematic diagram of comparison of ultrafine dust concentration changes before and after using 3D printing environmental protection equipment in the test example. As can be seen from FIG. 10, the right figure (using the 3D printing environmental protection device of the present invention) is relative to the left figure (not shown). The 3D printing environmental protection device of the present invention can reduce the ultrafine dust by an average of 91%.

2. Toxic gas (TVOC)

Equipment filter: HEPA filter

Test materials: commonly used ABS, Nylon 3D printing supplies

Please refer to FIG. 11. FIG. 11 is a schematic diagram showing the effect of the 3D printing environmental protection device for removing toxic gases for different 3D printing consumables in the test example. As can be seen from Fig. 11, for the commonly used ABS 3D printing consumables, the 3D printing environmental protection device of the present invention can remove 85% of the toxic gas on average. For Nylon 3D printing consumables, the 3D printing environmental protection device of the present invention can remove 94% of toxic gases on average.

The above described embodiments merely express several embodiments of the present invention, the description of which is more specific and detailed, but not It can be understood as a limitation of the scope of the patent of the present invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A 3D printing environmental protection device, comprising: a housing having an inner cavity for accommodating a 3D printing assembly, wherein the housing is openable and closable; and the purifier is mounted on the housing, the purifying The device includes a first filter element and a second air outlet, the first air outlet communicates with the inner cavity and the filter element, and the second air outlet communicates with the inner cavity and the air blower; The air of the inner chamber is internally circulated through the first tuyere, the filter element, the air blower and the second tuyere.
The 3D printing eco-friendly device according to claim 1, wherein the housing has a transparent window that can be viewed from the outside to the inner cavity.
The 3D printing environment protection device according to claim 1, wherein the filter element is located above the air blower; the first air outlet is an air inlet, the second air outlet is an air outlet, and the first air outlet is corresponding to the air outlet. Above the second tuyere.
The 3D printing environmental protection device according to claim 1, wherein the air blower is specifically a blower or a pressure reducer.
The 3D printing environment protection device according to claim 4, wherein the purifier has a first filter port whose air inlet direction is a horizontal direction, and a second filter port whose air flow direction is vertically downward; The port is in communication with the filter element and is installed at the first tuyere, and the second filter port is in communication with the air blower and is installed at the second tuyere.
The 3D printing environment protection device according to claim 5, wherein the second filter port is in an inverted bucket shape.
The 3D printing environment protection device according to claim 6, wherein the first filter port is provided with a fence.
The 3D printing environment protection device according to claim 1, wherein the purifier further has a heat dissipation fan and an adjustment knob; the heat dissipation fan is mounted above the filter element, and the adjustment knob is electrically connected to the air blower to adjust the drive The power of the wind turbine.
The 3D printing eco-friendly device according to claim 1, wherein the housing is a tent type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 2, wherein the housing is a tent-type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 3, wherein the housing is a tent-type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 4, wherein the housing is a tent-type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 5, wherein the housing is a tent type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 6, wherein the housing is a tent type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 7, wherein the housing is a tent type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 8, wherein the housing is a tent type housing having a zipper door to open or close the inner cavity.
The 3D printing eco-friendly device according to claim 1, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 2, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 3, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 4, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 5, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 6, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 7, wherein the housing is a box type housing having a handle door to open or close the inner chamber.
The 3D printing eco-friendly device according to claim 8, wherein the housing is a box type housing having a handle door to open or close the inner chamber.