Heat dissipation device and 3D printing equipment

Abstract

The present invention relates to a heat dissipation device and a 3D printing device. The heat dissipation device includes a fluid driving member, an air guide member, a partition and an annular body. The inner cavity of the air guide member forms an air duct. The partition and the annular body are placed in the air duct. The air duct is divided by the partition to form at least two channels. The inlet fluid of the channel is connected to the fluid driving member. The interior of the annular body forms a mounting hole for mounting a nozzle. The annular body is also provided with an air outlet running through in the radial direction. The outlet of the channel is connected to the mounting hole through the air outlet fluid. The air flow blown out by the fluid driving member can flow through the inlet, outlet and air outlet in sequence into the mounting hole. The air duct is divided into at least two channels by the partition, so that the air volume is guided and diverted, and then the air flow in the two channels flows out from their respective outlets and flows into the mounting hole through their respective corresponding air outlets, so that the air flow in the two channels is ejected toward the nozzle from different areas, so that the heat dissipation effect is better, and the problem of insufficient heat dissipation during large-capacity extrusion is effectively solved.

Description

Technical Field

[0001] The present invention relates to 3D printing heat dissipation technology, and in particular to a heat dissipation device and 3D printing equipment. Background Art

[0002] Driven by the advancement of intelligent computer digital technology, 3D printing is finding wider and wider application, particularly with FDM hot-melt printing, which is increasingly favored by DIY enthusiasts. However, existing 3D printing equipment suffers from untimely or insufficient cooling during high-speed printing, leading to collapse or deformation of printed models, compromising print quality. Summary of the Invention

[0003] Based on this, it is necessary to provide a heat dissipation device to address the technical problem that the existing 3D printing equipment has untimely or insufficient cooling and heat dissipation during high-speed printing, which causes the printed model to collapse or deform in appearance, affecting the printing quality.

[0004] A heat dissipation device includes a fluid driving member, an air guide member, a partition and an annular body, the inner cavity of the air guide member forms an air duct, the partition and the annular body are placed in the air duct, the air duct is divided by the partition to form at least two channels, the inlet fluid of the channel is connected to the fluid driving member, the interior of the annular body forms a mounting hole for mounting a nozzle, the annular body is also provided with an air outlet running through the radial direction, the outlet of the channel is connected to the mounting hole through the air outlet fluid, and the air flow blown out by the fluid driving member can flow through the inlet, the outlet and the air outlet in sequence and flow into the mounting hole.

[0005] In one embodiment, a first partition and a second partition are provided in the air duct, and the first partition and the second partition are respectively connected to different areas of the annular body, a first channel is formed between the first partition and a partial area of ​​the inner wall of the air guide, a second channel is formed between the second partition and a partial area of ​​the inner wall of the air guide, and a third channel is formed between the first partition and the second partition, and the third channel extends radially along the annular body.

[0006] In one embodiment, the first channel is connected to the second channel and is annular as a whole. The inlets of the first channel, the second channel and the third channel are all located on the same side of the air guide and are arranged in sequence along a first horizontal direction.

[0007] In one embodiment, in a partial area close to the inlet, along the flow direction of the air flow in the third channel, the distance between the two oppositely arranged parts on the inner side wall of the air guide gradually increases.

[0008] In one embodiment, along the flow direction of the airflow in the third channel, the distance between the first partition and the second partition gradually increases.

[0009] In one embodiment, the air outlet extends along the circumference of the annular body and is connected; or, there are multiple air outlets, the air outlet extends along the circumference of the annular body, and the multiple air outlets are distributed at intervals.

[0010] In one embodiment, the height of the air outlet gradually decreases at least in a partial area along the radial direction inward of the annular body.

[0011] In one embodiment, the vertical dimension of the air outlet is smaller than the vertical dimension of the outlet position of the corresponding channel.

[0012] In one embodiment, along the flow direction of the airflow, the air guide includes at least a first area and a second area distributed in sequence, the first area and the second area are connected, the vertical size of the first area is larger than the vertical size of the second area, and the vertical sizes of the first area and the second area in the flow direction gradually decrease.

[0013] In one embodiment, the heat dissipation device further includes a connecting piece, a connecting channel is provided in the connecting piece, the connecting channel includes a first connecting portion and a second connecting portion which are connected to each other, the fluid driving member is fluidically connected to the first connecting portion, the second connecting portion is fluidically connected to the inlet of the channel, and the second connecting portion has the same extension direction as the air guide member.

[0014] The present invention also provides a 3D printing device that can solve at least one of the above technical problems.

[0015] A 3D printing device includes the above-mentioned heat dissipation device, a frame and a print head, wherein the print head and the fluid driving component are both mounted on the frame, and the print head includes a nozzle, which extends downward from the mounting hole.

[0016] Beneficial effects:

[0017] A heat dissipation device provided by an embodiment of the present invention includes a fluid driving member, an air guide member, a partition and an annular body. The inner cavity of the air guide member forms an air duct. The partition and the annular body are placed in the air duct. The air duct is divided by the partition to form at least two channels. The inlet fluid of the channel is connected to the fluid driving member. The interior of the annular body forms a mounting hole for mounting a nozzle. The annular body is also provided with an air outlet running through the radial direction. The outlet of the channel is connected to the mounting hole through the air outlet fluid. The air flow blown out by the fluid driving member can flow through the inlet, outlet and air outlet in sequence into the mounting hole. In this application, the air duct is divided into at least two channels by a partition, so that the air volume is guided and diverted, and then the air flow in the two channels flows out from their respective outlets and flows into the mounting hole through their respective corresponding air outlets, so that the air flow in the two channels is ejected toward the nozzle from different areas, so that the heat dissipation effect is better, effectively solving the problem of insufficient heat dissipation during large-capacity extrusion, and improving the model printing quality.

[0018] An embodiment of the present invention further provides a 3D printing device comprising the aforementioned heat dissipation device, a frame, and a print head. The print head and fluid drive element are mounted on the frame. The print head includes a nozzle extending downwardly from a mounting hole. This 3D printing device can solve at least one of the aforementioned technical problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of the heat dissipation device provided by the present invention;

[0020] Figure 2 A schematic diagram of the heat dissipation device provided by the present invention;

[0021] Figure 3 A bottom view of the heat dissipation device provided by the present invention;

[0022] Figure 4 A schematic diagram of an air guide member in the heat dissipation device provided by the present invention;

[0023] Figure 5 This is a cross-sectional view of the air guide member in the heat dissipation device provided by the present invention.

[0024] Figure numbers: 100-fluid driving part; 110-fan; 120-wind casing; 130-connecting part; 131-first connecting part; 132-second connecting part; 133-first connecting part; 200-air guide; 210-first channel; 220-second channel; 230-third channel; 240-first partition; 250-second partition; 260-third area 260; 270-first area; 280-second area; 290-second connecting part; 291-connecting hole; 300-annular body; 310-upper side wall; 320-lower side wall; 340-air outlet; 350-blocking ring; 360-mounting hole; 400-print nozzle; 410-frame; 420-nozzle. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] See Figure 1 、 Figure 2 and Figure 4 , Figure 1 A cross-sectional view of the heat dissipation device provided by the present invention; Figure 2 A schematic diagram of the heat dissipation device provided by the present invention; Figure 4 Schematic diagram of the air guide in the heat dissipation device provided by the present invention. The heat dissipation device provided by one embodiment of the present invention includes a fluid driving member 100, an air guide member 200, a partition and an annular body 300. The inner cavity of the air guide member 200 forms an air duct. The partition and the annular body 300 are placed in the air duct. The air duct is divided by the partition to form at least two channels. The inlet fluid of the channel is connected to the fluid driving member 100. The interior of the annular body 300 forms a mounting hole 360 ​​for mounting the nozzle 420. The annular body 300 is also provided with an air outlet 340 that passes through in the radial direction. The outlet of the channel is connected to the mounting hole 360 ​​through the air outlet 340. The air flow blown out by the fluid driving member 100 can flow through the inlet, outlet and air outlet 340 in sequence and flow into the mounting hole 360. For ease of description, please refer to the attached manual. Figure 2 , the flow direction of the air flow in this application refers to the Figure 2 The left and right directions in the horizontal direction refer to the Figure 2 The front-to-back direction in the text refers to the vertical direction. Figure 2 The up and down directions in .

[0032] Specifically, the air duct is divided into at least two channels by a partition so that the air volume is guided and diverted, and then the airflow in the two channels flows out from their respective outlets and flows into the mounting hole 360 ​​through their respective corresponding air outlets 340, so that the airflow in the two channels is ejected toward the nozzle from different areas, resulting in better heat dissipation effect, effectively solving the problem of insufficient heat dissipation during large-capacity extrusion, and improving the model printing quality.

[0033] See Figure 4 and Figure 5 , Figure 5 The figure shows a cross-sectional view of an air guide 200 in a heat dissipation device according to the present invention. In one embodiment, a first partition 240 and a second partition 250 are provided in the air duct. The first partition 240 and the second partition 250 are respectively connected to different regions of the annular body 300. A first channel 210 is formed between the first partition 240 and a portion of the inner wall of the air guide 200. A second channel 220 is formed between the second partition 250 and a portion of the inner wall of the air guide 200. A third channel 230 is formed between the first partition 240 and the second partition 250. The third channel 230 extends radially along the annular body 300.

[0034] Specifically, the third channel 230 is arranged between the first channel 210 and the second channel 220. The airflow in the first channel 210 flows out from its corresponding air outlet 340 from left to right, and the airflow in the first channel 210 and the second channel 220 flows out along the air outlet 340 on the front and back sides of the annular body 300 respectively, so that the airflow can be divided into three groups and respectively exported from three different areas on the annular body 300, thereby forming a heat dissipation area centered on the nozzle 420, thereby improving the heat dissipation effect.

[0035] Furthermore, the annular body 300 includes a minor arc and a major arc, the first partition 240 and the second partition 250 are respectively connected to the connection between the minor arc and the major arc, and the outlet of the third channel 230 corresponds to the minor arc, so that the airflow of the third channel 230 flows out directly from the air outlet 340 at the minor arc, the airflow in the first channel 210 flows out from the air outlet 340 on the rear side of the minor arc, and the airflow in the second channel 220 flows out from the air outlet 340 on the front side of the minor arc, so that the airflow derived from the three areas is roughly the same, thereby reducing the degree of uneven heat dissipation at the nozzle 420.

[0036] Continue reading Figure 5 In one embodiment, the first channel 210 is connected to the second channel 220 and is annular as a whole. The entrances of the first channel 210, the second channel 220 and the third channel 230 are all located on the same side of the air guide 200 and are arranged in sequence along the horizontal first direction.

[0037] Specifically, the entrances of the first channel 210, the second channel 220, and the third channel 230 are all located on the same side of the air guide 200, so that the airflow is simultaneously divided into three groups, entering the first channel 210, the second channel 220, and the third channel 230 respectively. Since the first channel 210 is annular, the airflow entering the first channel 210 first flows to the annular area along the extension direction of the first channel 210, and then hits the outer wall of the first channel 210, causing the airflow direction to change, so that part of the airflow can flow out from the air outlet 340 corresponding to the annular area, and another part of the airflow continues to flow along the outer wall of the first channel 210 and flows to the connection between the first channel 210 and the second channel 220, so that part of the airflow flows out from the air outlet 340 corresponding to the connection between the first channel 210 and the second channel 220.

[0038] Because the second channel 220 is annular, the airflow entering the second channel 220 first flows along the extension direction of the second channel 220 to the annular area, then strikes the outer wall of the second channel 220, causing the airflow direction to change. This allows part of the airflow to flow out of the air outlet 340 corresponding to the annular area, while another part of the airflow continues to flow along the outer wall of the second channel 220 and flows to the connection between the first channel 210 and the second channel 220, causing part of the airflow to flow out of the air outlet 340 corresponding to the connection between the first channel 210 and the second channel 220. As a result, airflow flows out of the air outlets 340 in various areas of the annular body 300, forming a heat dissipation area centered on the nozzle 420, thereby improving the heat dissipation effect.

[0039] Among them, since the first channel 210 and the second channel 220 are connected, the airflow flowing through the connection between the first channel 210 and the second channel 220 can continue to flow along the extension direction of the channel, and can avoid colliding with the side wall between the first channel 210 and the second channel 220 to make the airflow disordered, thereby achieving the effect of guiding and uniform wind, improving the stability of the airflow, and then improving the heat dissipation efficiency.

[0040] See Figure 4 and Figure 5 In one embodiment, in a partial area near the inlet, along the flow direction of the air flow in the third channel 230, the distance between the two oppositely arranged parts on the inner wall of the air guide 200 gradually increases.

[0041] Specifically, as the distance between the front and rear side walls of the air guide 200 gradually increases, the rotation angle of the annular area of ​​the first channel 210 and the second channel 220 is increased, thereby reducing the amount of airflow hitting the annular area, and reducing the airflow flowing out from the air outlet 340 corresponding to the annular area, so that there is still enough airflow remaining in the first channel 210 and the second channel 220 to flow out from the connection between the first channel 210 and the second channel 220, so that airflow flows out in the annular area centered on a nozzle 420, thereby improving the uniformity of heat dissipation.

[0042] See Figure 5 In one embodiment, along the flow direction of the airflow in the third channel 230 , the distance between the first partition 240 and the second partition 250 gradually increases.

[0043] Specifically, since the distance between the first partition 240 and the second partition 250 gradually increases along the flow direction of the air flow in the third channel 230, the inferior arc is enlarged, so that the inferior arc can cover part of the air outlet 340 located in the extension direction of the first channel 210 and the second channel 220, thereby reducing the outflow air volume from the air outlet 340 corresponding to the extension direction of the first channel 210 and the second channel 220, so that most of the air flow can pass through the collision with the inner wall of the annular area, and thus flow out from the air outlet 340 corresponding to the annular area and the air outlet 340 corresponding to the connection between the first channel 210 and the second channel 220, so that air flow flows out in the annular area centered on a nozzle 420, thereby improving the uniformity of heat dissipation.

[0044] See Figure 1 、 Figure 4 and Figure 5 In one embodiment, there are multiple air outlets 340 , the air outlets 340 extend along the circumference of the annular body 300 , and the multiple air outlets 340 are distributed at intervals.

[0045] Specifically, multiple air outlets 340 are distributed at intervals along the circumferential direction, so that each channel has a corresponding air outlet 340, and the air flow from each channel flows out from the corresponding air outlet 340, thereby forming a heat dissipation area centered on the nozzle 420, thereby improving heat dissipation efficiency.

[0046] In other embodiments, the air outlets 340 extend and communicate along the circumference of the annular body 300. That is, the airflow in each channel flows out from the area corresponding to the air outlet 340, and forms a heat dissipation area centered on the nozzle 420, thereby improving heat dissipation efficiency.

[0047] See Figure 1 and Figure 4In one embodiment, the height of the air outlet 340 gradually decreases in at least a portion of the area along the radial direction inward of the annular body 300 .

[0048] Specifically, radially inward along the annular body 300, part of the upper side wall 310 and part of the lower side wall 320 of the air outlet 340 are inclined from top to bottom, so that by controlling the degree of inclination of the upper side wall 310 and the lower side wall 320, the direction of the airflow is controlled, so that the airflow flows from top to bottom to the heat dissipation area specified by the model below the nozzle 420, thereby strengthening its heat dissipation purpose and improving the heat dissipation efficiency.

[0049] Furthermore, radially inwardly along the annular body 300 , all upper side walls 310 and all lower side walls 320 of the air outlet 340 are inclined from top to bottom, thereby guiding the airflow so that the airflow flows stably toward the heat dissipation area specified by the model below the nozzle 420 .

[0050] See Figure 1 In one embodiment, the vertical dimension of the air outlet 340 is smaller than the vertical dimension of the outlet of the corresponding channel.

[0051] Specifically, when the air flow flows into the corresponding air outlet 340 through the channel, since the vertical dimension of the air outlet 340 is smaller than the vertical dimension of the corresponding outlet position, the volume of the air flow is compressed, thereby increasing the pressure of the air flow and increasing the flow rate of the air flow. When the high-speed air flow flows to the heat dissipation area specified by the model below the nozzle 420, it can take away more heat and improve the heat dissipation efficiency.

[0052] See Figure 5 In one embodiment, at the connection between the air outlet 340 and the channel, the lower side wall 320 of the air outlet 340 is flush with the bottom wall of the air guide 200, and the height of the upper side wall 310 of the air outlet 340 is lower than the upper wall of the air guide 200.

[0053] Specifically, because the lower sidewall 320 of the air outlet 340 is flush with the bottom wall of the air guide 200, the airflow at the lower end of the channel can stably flow into the corresponding air outlet 340. The airflow at the upper end of the channel will collide with the connection between the upper wall of the channel and the upper sidewall 310 of the air outlet 340, and then the airflow direction will change, becoming an upward-to-downward slanted direction. The air outlet 340 is in an upward-to-downward slanted direction, allowing the airflow at the upper end of the channel to fully flow into the air outlet 340 and providing guidance for the airflow.

[0054] Continue reading Figure 5In one embodiment, the upper sidewall 310 and the lower sidewall 320 of the air outlet 340 are parallel. Specifically, because the upper sidewall 310 and the lower sidewall 320 of the air outlet 340 are parallel, the air pressure does not change as the air flows along the extension direction of the air outlet 340. This has the effect of stabilizing and guiding the airflow, allowing the airflow from the air outlet 340 to flow accurately to the heat dissipation area specified by the model below the nozzle 420, thereby improving heat dissipation efficiency.

[0055] See Figure 3 and Figure 4 , Figure 3 A bottom view of the heat dissipation device provided by the present invention. In one embodiment, a retaining ring 350 is circumferentially disposed above the wall of the mounting hole 360 ​​along the radial direction of the annular body 300. A nozzle 420 extends downward from the mounting hole 360, and the sidewall of the nozzle 420 is connected to the retaining ring 350. This prevents airflow from overflowing upward, allowing the airflow from the air outlet 340 to flow entirely downward and toward the mold below the nozzle 420, thereby improving heat dissipation efficiency.

[0056] See Figure 1 and Figure 2 In one embodiment, along the flow direction of the airflow, the air guide 200 includes at least a first area 270 and a second area 280 distributed in sequence, the first area 270 and the second area 280 are connected, and the size of the first area 270 in the vertical direction is larger than the size of the second area 280 in the vertical direction.

[0057] Specifically, one end of the first region 270 away from the second region 280 is connected to the fluid drive member 100, and one end of the second region 280 away from the first region 270 is connected to the air outlet 340. Since the vertical dimension of the first region 270 is larger than the vertical dimension of the second region 280, the volume of the airflow can be compressed during the flow in the channel, thereby increasing the pressure of the airflow. When the high-speed airflow flows to the heat dissipation area specified by the model below the nozzle 420, it can take away more heat and improve the heat dissipation efficiency.

[0058] See Figure 1 and Figure 2 In one embodiment, the air guide 200 also includes a third area 260, one end of the fluid in the third area 260 is connected to the first area 270, and the other end of the fluid in the second area 280, and the vertical dimension of the third area 260 in the flow direction gradually decreases, so that the volume of the airflow can be gradually compressed during the flow in the channel, so that the flow rate of the airflow increases while the flow is stable.

[0059] It should be noted that the gradual decrease in the vertical dimension of the third region 260 is much greater than the gradual increase in the distance between the two opposing portions on the inner sidewall of the air guide 200. This means that the overall volume of the airflow is compressed in the direction of the airflow velocity. Furthermore, the gradual decrease in the vertical dimension of the third region 260 is much greater than the gradual increase in the distance between the first partition 240 and the second partition 250. This means that the overall volume of the airflow is compressed in the direction of the airflow velocity.

[0060] Continue reading Figure 1 and Figure 2 In one embodiment, the sizes of the first region 270 and the second region 280 in the vertical direction are unchanged, and the connection between the third region 260 and the first region 270 and the second region 280 is smoothly transitioned.

[0061] Specifically, because the connection between the third region 260 and the first region 270 and the second region 280 is smoothly transitioned, the airflow within the channel can smoothly pass through the first region 270, the third region 260, and the second region 280 to the air outlet 340, thereby improving the stability of the airflow. Since the vertical size of the first region 270 is unchanged, the first region 270 can play a certain role in stabilizing the airflow flowing in from the fluid driving member 100. Then, after the airflow is compressed by the third region 260, the second region 280 can again play a role in stabilizing the airflow from the third region 260, thereby ensuring that the airflow can flow stably within the channel and accurately flow out from the corresponding air outlet 340.

[0062] See Figure 1 and Figure 2 In one embodiment, the heat dissipation device further includes a connecting member 130, a connecting channel is provided in the connecting member 130, the connecting channel includes a first connecting portion 131 and a second connecting portion 132 that are connected to each other, the fluid driving member 100 is fluidically connected to the first connecting portion 131, the second connecting portion 132 is fluidically connected to the inlet of the channel, and the second connecting portion 132 has the same extension direction as the air guide member 200.

[0063] Specifically, the second connecting portion 132 is fluidically connected to the first region 270. When the fluid-driven component 100 is located outside the extension line of the air guide 200, an angle is formed between the first connecting portion 131 and the second connecting portion 132. The airflow from the fluid-driven component 100 into the first connecting portion 131 will first hit the sidewall at the connection between the first connecting portion 131 and the second connecting portion 132. The direction of the airflow into the second connecting portion 132 is relatively chaotic. Since the second connecting portion 132 and the air guide 200 extend in the same direction, the airflow into the first region 270 can continue to flow in the left-right direction, thereby achieving uniform and stable airflow. Therefore, it can be seen that the installation position of the fluid-driven component 100 relative to the air guide 200 is not restricted.

[0064] Furthermore, a first connecting portion 133 is provided on the outer wall of the second connecting portion 132, and a second connecting portion 290 is provided on the outer wall of the first area 270. Connecting holes 291 are provided in both the first connecting portion 133 and the second connecting portion 290. Fasteners such as screws are inserted into the connecting holes 291 of the first connecting portion 133 and the second connecting portion 290, so that the connecting portion 130 is stably connected to the air guide portion 200, thereby reducing the overflow of airflow.

[0065] See Figure 1 In one embodiment, the first connecting portion 131 is located at the upper end of the second connecting portion 132 , and the fluid driving component 100 is installed at the upper end of the connecting component 130 .

[0066] Specifically, since the fluid driving part 100 is installed at the upper end of the connecting part 130, the size of the heat dissipation device in the left and right directions can be reduced, thereby preventing the nozzle 420 from colliding with other components during the printing process due to the excessive size of the heat dissipation device in the left and right directions, thereby affecting the printing effect.

[0067] Furthermore, the connecting piece 130 is "L-shaped", and the connection between the first connecting part 131 and the second connecting part 132 has a smooth transition, thereby reducing the impact of the airflow in the first connecting part 131 and the side wall of the connection between the first connecting part 131 and the second connecting part 132, thereby reducing the clutter of the airflow flowing into the second connecting part 132.

[0068] See Figure 1 and Figure 2 In one embodiment, the fluid driving component 100 includes a wind housing 120 and a fan 110. The fan 110 is accommodated in the wind housing 120. The first connecting portion 131 is in fluid communication with the wind housing 120. The fan 110 is used to produce cold air and introduce the cold air into the channel through the connecting channel.

[0069] See Figure 1In one embodiment, the connecting piece 130 is "L-shaped", the upper end of the connecting piece 130 is a first connecting portion 131, and the lower end is a second connecting portion 132. The wind shell 120 is installed at the upper end of the connecting piece 130 and is connected to the first connecting portion 131. The second connecting portion 132 is connected to the first area 270.

[0070] Specifically, since the air housing 120 is installed at the upper end of the connecting piece 130, the size of the heat dissipation device in the left and right directions can be reduced, thereby preventing the nozzle 420 from colliding with other components during the printing process due to the excessive size of the heat dissipation device in the left and right directions, thereby affecting the printing effect.

[0071] See Figure 1 In one embodiment, the second connecting portion 132 and the air guide member 200 extend in the same direction.

[0072] Specifically, the airflow flowing into the first connecting part 131 from the outlet of the wind shell 120 will first hit the side wall at the connection between the first connecting part 131 and the second connecting part 132, and the direction of the airflow flowing into the second connecting part 132 will be relatively chaotic. Since the second connecting part 132 has the same extension direction as the wind guide 200, the airflow flowing into the first area 270 can continue to flow in the left and right directions, thereby achieving the effect of uniform wind and stable flow.

[0073] Furthermore, a first connecting portion 133 is provided on the outer wall of the second connecting portion 132, and a second connecting portion 290 is provided on the outer wall of the first area 270. Connecting holes 291 are provided in both the first connecting portion 133 and the second connecting portion 290. Fasteners such as screws are inserted into the connecting holes 291 of the first connecting portion 133 and the second connecting portion 290, so that the connecting portion 130 is stably connected to the air guide portion 200, thereby reducing the overflow of airflow.

[0074] See Figure 1 、 Figure 2 and Figure 5 In one embodiment, an embodiment of the present invention provides a 3D printing device, including the above-mentioned heat dissipation device, and also includes a frame 410 and a print head 400, the print head 400 and the fluid driving member 100 are both installed on the frame 410, and the print head 400 includes a nozzle 420, which extends downward from the mounting hole 360 ​​so that the heat dissipation device can dissipate heat from the model below the nozzle 420.

[0075] Specifically, the air housing 120 is installed on the frame 410. Since the upper side wall 310 and the lower side wall 320 of the air outlet 340 are inclined from top to bottom, they have a guiding effect on the airflow, so that the airflow flows stably to the heat dissipation area specified by the model below the nozzle 420, thereby improving the printing quality.

[0076] The heat dissipation device in the 3D printing device in the present application divides the air duct into three channels through a partition, so that the air volume is guided and diverted, and then converged to the air outlet 340 corresponding to different areas on the annular body 300 to flow out, so that the air flow can flow out from different areas toward the nozzle 420 and flow to the heat dissipation area specified by the model below the nozzle 420, so that the heat dissipation effect is better, effectively solving the problem of insufficient heat dissipation during large-capacity extrusion, and improving the printing quality of the 3D printing device model.

[0077] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A heat dissipation device, characterized in that: The invention comprises a fluid driving member, an air guide member, a partition member and an annular body, wherein the inner cavity of the air guide member forms an air duct, the partition member and the annular body are placed in the air duct, and the air duct is divided by the partition member into at least two channels, the inlet of the channel is fluidically connected to the fluid driving member, the interior of the annular body forms a mounting hole for mounting a nozzle, and the annular body is further provided with an air outlet penetrating in a radial direction, the outlet of the channel is fluidically connected to the mounting hole via the air outlet, and the air flow blown out by the fluid driving member can flow through the inlet, the outlet and the air outlet in sequence and flow into the mounting hole; The separator includes a first separator and a second separator, the first separator and the second separator are respectively connected to different areas of the annular body, a first channel is formed between the first separator and a partial area of ​​the inner wall of the air guide, a second channel is formed between the second separator and a partial area of ​​the inner wall of the air guide, and a third channel is formed between the first separator and the second separator, and the third channel extends in the radial direction of the annular body; There are multiple air outlets, and the air outlets are distributed at intervals along the circumference of the annular body.

2. The heat dissipation device according to claim 1, characterized in that: The first channel is connected to the second channel and is in a ring shape surrounding the mounting hole. The inlets of the first channel, the second channel and the third channel are all located on the same side of the air guide and are arranged in sequence along the first horizontal direction.

3. The heat dissipation device according to claim 2, characterized in that: In a partial area close to the inlet, along the flow direction of the air flow in the third channel, the distance between the two parts arranged opposite to each other on the inner side wall of the air guide member gradually increases.

4. The heat dissipation device according to claim 1, 2 or 3, characterized in that: Along the flow direction of the airflow in the third channel, the distance between the first partition and the second partition gradually increases.

5. The heat dissipation device according to claim 1, wherein: The air outlet extends along the circumference of the annular body.

6. The heat dissipation device according to claim 1, characterized in that: Along the radial direction inward of the annular body, the height of the air outlet gradually decreases in at least a partial area.

7. The heat dissipation device according to claim 1, wherein: The size of the air outlet in the vertical direction is smaller than the size of the outlet of the corresponding channel in the vertical direction.

8. The heat dissipation device according to claim 1, wherein: Along the flow direction of the airflow, the air guide includes at least a first area and a second area distributed in sequence, the first area and the second area are connected, and the size of the first area in the vertical direction is larger than the size of the second area in the vertical direction.

9. The heat dissipation device according to claim 1, wherein: The heat dissipation device also includes a connecting piece, in which a connecting channel is provided. The connecting channel includes a first connecting portion and a second connecting portion that are connected to each other. The fluid driving member is fluidically connected to the first connecting portion, and the second connecting portion is fluidically connected to the inlet of the channel, and the second connecting portion has the same extension direction as the air guide member.

10. A 3D printing device, characterized in that: The heat dissipation device comprises the heat dissipation device according to any one of claims 1 to 9, and further comprises a frame and a print head, wherein the print head and the fluid driving component are both mounted on the frame, and the print head comprises a nozzle, and the nozzle extends downward from the mounting hole.

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