Ventilation module and 3D printer

Abstract

This application relates to the field of 3D printing technology, and in particular to a ventilation module and a 3D printer. The ventilation module for the 3D printer includes a main body, a driving component, and a temperature regulating component. The main body includes a first inlet, a second inlet, and a channel, with the first and second inlets connected by the channel. The driving component is located in the channel and can rotate to drive gas flow within the channel. The temperature regulating component is located in the channel, between the first inlet and the driving component, and is configured to regulate the temperature of the gas within the channel. Thus, the ventilation module can achieve both cavity heating and cooling functions, reducing the number of driving components, lowering costs, enabling the 3D printer to be compatible with various high and low temperature consumables, adapting to various printing environments, and achieving high overall space utilization.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and in particular to a ventilation module and a 3D printer. Background Technology

[0002] 3D printing technology, also known as additive manufacturing, is a technology that uses digital model files as a basis and employs adhesive materials to construct objects layer by layer. 3D printing is typically achieved using 3D printing equipment. 3D printing equipment, also called three-dimensional printers or stereoprinters, is a type of rapid prototyping equipment.

[0003] 3D printers include cooling fans and heating fans. Cooling fans lower the temperature of the printing material by blowing cool air, allowing it to solidify and set. Heating fans accelerate the flow of hot air, distributing heat evenly across the printing platform or chamber, ensuring the printing material is heated uniformly during preheating and printing. However, model cooling and heating fans are typically separate, and 3D printers cannot effectively integrate the cooling and heating functions of the cooling fans and heating fans. Utility Model Content

[0004] The summary of this application introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] According to one aspect of this application, a ventilation module is provided for a 3D printer, the ventilation module comprising:

[0006] The main body includes a first port, a second port, and a channel, wherein the first port and the second port are connected through the channel;

[0007] A driving member, located in the channel, is rotatable to drive gas flow in the channel; and

[0008] A temperature regulating component is located in the channel, between the first port and the driving component, and the temperature regulating component is configured to regulate the temperature of the gas in the channel.

[0009] According to this application, a ventilation module for a 3D printer includes a main body, a driving component, and a temperature regulating component. The main body includes a first inlet, a second inlet, and a channel, with the first and second inlets connected by the channel. The driving component is located in the channel and can rotate to drive gas flow within the channel. The temperature regulating component is located in the channel, between the first inlet and the driving component, and is configured to regulate the temperature of the gas within the channel. In this way, the ventilation module can achieve both cavity heating and cooling functions, reducing the number of driving components, lowering costs, enabling the 3D printer to be compatible with various high and low temperature consumables, adapting to various printing environments, and achieving high overall space utilization.

[0010] Optionally, the ventilation module further includes a purification component located within the channel, between the first inlet and the drive component, or the purification component located outside the second inlet.

[0011] Optionally, the main body includes a first chamber, a second chamber, and an intermediate chamber, wherein the first chamber has a first opening, the second chamber has a second opening, and the driving member is disposed in the intermediate chamber.

[0012] Optionally, the first port is located above the ventilation module, and the second port is located below the ventilation module; the ventilation module further includes a printing tool head, the printing tool head includes a nozzle, and the first port is disposed toward the nozzle along a direction parallel to a plane perpendicular to the height direction of the 3D printer.

[0013] Optionally, the ventilation module further includes a purification component located in the second chamber, and the temperature regulating component located in the first chamber, or the purification component is disposed outside the second opening.

[0014] Optionally, the driving component can be an axial flow fan, which is capable of rotating in two directions. When the driving component rotates in one direction, the gas flows from the first port to the second port; when the driving component rotates in the other direction, the gas flows from the second port to the first port. When the gas flows toward the first port, the temperature regulating component turns on the cooling mode; when the gas flows toward the second port, the temperature regulating component turns on the heating mode.

[0015] Optionally, the ventilation module further includes a filter drive component that enables the purification component to be offset from the second inlet.

[0016] Optionally, the intermediate chamber is further provided with a drainage assembly, which includes a large opening and a small opening, the small opening being closer to the driving member than the large opening.

[0017] Optionally, the airflow guiding assembly includes multiple airflow guiding plates arranged at intervals, the driving component is provided with an air outlet, and the multiple airflow guiding plates correspond to the air outlet; the portions of the multiple airflow guiding plates near the driving component together form a small opening, and the portions of the multiple airflow guiding plates near the temperature regulating component together form a large opening.

[0018] According to another aspect of this application, a 3D printer is also provided, the 3D printer including a nozzle and the above-described ventilation module, wherein a first port is located above a second port along the height direction of the 3D printer, and the first port faces the nozzle.

[0019] According to the 3D printer of this application, the 3D printer includes a nozzle and the aforementioned ventilation module. A first inlet is located above a second inlet along the height direction of the 3D printer, facing the nozzle. The ventilation module includes a main body, a driving component, and a temperature regulating component. The main body includes the first inlet, the second inlet, and a channel, with the first and second inlets connected by the channel. The driving component is located in the channel and is rotatable to drive gas flow within the channel. The temperature regulating component is located in the channel, between the first inlet and the driving component, and is configured to regulate the temperature of the gas within the channel. Thus, the ventilation module can achieve both cavity heating and cooling functions, reducing the number of driving components, lowering costs, enabling the 3D printer to be compatible with various high and low temperature consumables, adapting to various printing environments, and achieving high overall space utilization. Attached Figure Description

[0020] The following figures are included as part of this application for understanding the application. The figures illustrate embodiments of the application and their descriptions, explaining the apparatus and principles of the application. In the figures,

[0021] Figure 1 This is a cross-sectional schematic diagram of a ventilation module according to a preferred embodiment of this application;

[0022] Figure 2 A three-dimensional schematic diagram of a partial 3D printer;

[0023] Figure 3 for Figure 1 The diagram shows a three-dimensional representation of the ventilation module, in which parts of the main body are omitted.

[0024] Figure 4 for Figure 3Another three-dimensional schematic diagram of the ventilation module shown.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100: Ventilation module; 110: Main body

[0027] 111: First bite 112: Second bite

[0028] 113: Passage 114: First Chamber

[0029] 115: Second chamber; 116: Intermediate chamber

[0030] 120: Drainage component 121: Large opening

[0031] 122: Small opening 123: Drainage plate

[0032] 130: Drive component; 131: Air outlet

[0033] 140: Temperature regulating component; 150: Purification component

[0034] 201: Heated bed 202: Nozzle Detailed Implementation

[0035] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0036] To fully understand this application, detailed portions will be set forth in the following description in order to illustrate it. Obviously, implementation of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may exist besides these detailed descriptions, and should not be construed as being limited to the embodiments set forth herein.

[0037] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0038] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and have no other meaning, such as a specific order. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0040] like Figure 1 As shown, this application provides a ventilation module 100 for use in a 3D printer. The 3D printer utilizes FDM (Fused Deposition Modeling) technology for printing. The 3D printer includes a tool head and a heated bed 201, and the tool head is movable. When the tool head moves to a preset position, it heats and melts a filament of thermoplastic material, which is then extruded through the nozzle 202 of the tool head and stacked layer by layer from bottom to top on the heated bed 201 to build an object. In this embodiment, "bottom" refers to the direction towards the bottom of the 3D printer, and "top" refers to the direction towards the top of the 3D printer. The tool head includes an extrusion assembly and a hot end. The extrusion assembly conveys the printing material supplied to the 3D printer by the feeding device to the hot end. The hot end has a heating function, heating the printing material to a molten state and extruding the molten printing material onto the heated bed 201.

[0041] For example, the hot end includes heat dissipation fins, a nozzle 202, and a throat located between the heat dissipation fins and the nozzle 202. The printing material passes sequentially through the heat dissipation fins, the throat, and the nozzle 202. Specifically, the printing material is heated to a molten state at the nozzle 202, and the nozzle 202 extrudes the molten printing material onto the heated bed 201.

[0042] The 3D printer also includes a chamber containing a heated bed 201. A base plate is also provided within the chamber, located at the bottom of the chamber and below the heated bed 201. The 3D printer further includes a heated bed connector connected to the heated bed 201. The heated bed connector connects the heated bed lifting assembly and the heated bed 201, allowing the heated bed 201 to move along the height direction D1 of the heated bed lifting assembly. In this embodiment, the "bottom surface of the heated bed 201" refers to the surface of the heated bed 201 facing the base plate. The heated bed 201 can move along the height direction D1 of the 3D printer to achieve material stacking. During movement along the printing path, the nozzle 202 extrudes molten printing material layer by layer at different locations on the heated bed 201, thereby printing a three-dimensional object.

[0043] 3D printers can circulate gas internally. For example, gas can circulate internally within the 3D printer. After internal circulation, the 3D printer expels the gas, thereby reducing the temperature and preventing damage to the tool head or the printed 3D object.

[0044] The ventilation module 100 allows for internal gas circulation. The ventilation module 100 includes a main body 110, which includes a first port 111, a second port 112, and a channel 113. The first port 111 and the second port 112 are connected via the channel 113. Gas can flow within the channel 113. The channel 113 is located inside the main body 110 and guides the gas flow along a specific route. As an alternative implementation, the first port 111 is the exhaust port of the ventilation module 100, and the second port 112 is the air inlet of the ventilation module 100. Gas can flow from the second port 112 to the first port 111. As another alternative implementation, the second port 112 is the exhaust port of the ventilation module 100, and the first port 111 is the air inlet of the ventilation module 100. Gas can flow from the first port 111 to the second port 112.

[0045] The first inlet 111 and the second inlet 112 are spaced apart. The first inlet 111 is located above the ventilation module 100, and the second inlet 112 is located below the ventilation module 100. The first inlet 111 is located above the second inlet 112 along the height direction D1 of the ventilation module 100. This avoids mutual interference between the gases from the first inlet 111 and the second inlet 112, reducing the occurrence of airflow short circuits.

[0046] The ventilation module 100 exhausts gas through either the first port 111 or the second port 112. To enable the gas to quickly act on the nozzle 202 or chamber of the 3D printer, the ventilation module 100 also includes a drive component 130, located inside the main body 110. Further, the drive component 130 is located in the channel 113. The drive component 130 can be connected to the main body 110 by screws, nuts, or clips. The main body 110 has mounting positions and positioning holes corresponding to the drive component 130. The main body 110 can position the drive component 130 to prevent it from shaking or shifting.

[0047] The drive member 130 is rotatable relative to the main body 110. The drive member 130 is rotatable to drive the gas flow in the channel 113, which speeds up the gas flow and allows the gas to quickly come into contact with the printing material at the nozzle 202, thereby regulating the temperature of the printing environment and the material and enhancing the heat exchange efficiency.

[0048] For example, the drive component 130 can be an axial flow fan, which contains a motor and an impeller. The motor drives the impeller to rotate. The motor provides power, converting electrical energy into mechanical energy. The impeller can be made of plastic or metal. The shape of the impeller blades and the direction of rotation allow the gas to flow in a specific direction. The impeller can be an axial flow fan blade.

[0049] An axial flow fan also includes a volute casing, which is fitted over the impeller. Gas can flow in from the axial center of the axial flow fan. The axial fan blades generate axial thrust on the gas, causing it to flow along the axial direction of the blades. The axial direction of the axial fan blades is parallel to the axial direction of the axial flow fan. The volute casing guides the axial airflow generated by the axial fan blades, ensuring it flows along the axial direction of the axial flow fan and is ultimately discharged from a specific outlet. During gas flow, the radial dimension of the volute casing increases, causing the gas velocity within the casing to decrease and the pressure to increase, resulting in higher pressure gas upon discharge.

[0050] The impeller can cooperate with the volute to achieve airflow in different directions. For example, the impeller can rotate clockwise or counterclockwise. When the impeller rotates clockwise, the axial fan blades rotate in a specific direction, pushing the gas to flow axially so that the gas is discharged in a specific direction. When the axial fan blades rotate counterclockwise, their tilt angle and rotation direction change, the direction of the force acting on the gas changes, and the direction of gas flow changes, thus causing the gas to be discharged from different directions.

[0051] like Figure 3As shown, the drive component 130 is also provided with an air outlet 131, which opens towards the first opening 111. Gas can flow through the air outlet 131 towards the first opening 111. For example, gas can flow upward through the air outlet 131. Gas from the first opening 111 can enter the drive component 130 through the air outlet 131.

[0052] The drive member 130 is rotatable in two directions. For example, the drive member 130 can rotate clockwise or counterclockwise. When the drive member 130 rotates in one direction, gas can be drawn in from the first port 111 and discharged from the second port 112, causing gas to flow from the first port 111 to the second port 112. When the drive member 130 rotates in the other direction, gas can be drawn in from the second port 112 and discharged from the first port 111, causing gas to flow from the second port 112 to the first port 111. Thus, by changing its rotation direction, the drive member 130 changes the gas flow direction, allowing gas to be discharged from either the first port 111 or the second port 112.

[0053] For example, in one embodiment of this disclosure, high-temperature gas can flow upwards, and by rotating the drive component 130, the gas can be discharged through the second port 112 into the cavity of the 3D printer, so that it acts on the heated bed 201 and the three-dimensional object. As another example, in one embodiment of this disclosure, cold air can flow downwards, and by rotating the drive component 130, the gas can be discharged through the first port 111 into the cavity of the 3D printer, so that it acts on the nozzle 202 and the three-dimensional object.

[0054] To enable the ventilation module 100 to be suitable for 3D printers operating under different conditions, the exhaust gas from the ventilation module 100 may optionally have different temperatures. The ventilation module 100 also includes a temperature regulating component 140, which is located inside the main body 110. Further, the temperature regulating component 140 is located in the channel 113. The temperature regulating component 140 can be connected to the main body 110 by screws, nuts, or clips. The main body 110 has corresponding mounting positions and positioning holes for the temperature regulating component 140. The main body 110 can position the temperature regulating component 140 to prevent it from shaking or shifting.

[0055] The temperature regulating component 140 is located between the first inlet 111 and the driving component 130, and is positioned above the driving component 130 along the height direction D1 of the ventilation module 100. The first inlet 111 is positioned above the temperature regulating component 140 along the height direction D1 of the ventilation module 100. The driving component 130 can control the direction of gas flow, causing the gas in the channel 113 to flow towards the temperature regulating component 140.

[0056] The temperature regulating member 140 is configured to regulate the temperature of the gas in the channel 113. For example, the temperature regulating member 140 has both cooling and heating functions. The temperature regulating member 140 can lower the gas temperature by cooling and raise the gas temperature by heating.

[0057] The temperature regulating component 140 can regulate the temperature via an electrical connection. For example, the temperature regulating component 140 can be a temperature controller. The temperature controller can monitor the temperature of the gas and convert the temperature signal into an electrical signal, thereby controlling the operation of a heating or cooling component to raise or lower the gas temperature, thus regulating the air temperature.

[0058] The temperature controller achieves precise closed-loop temperature control through the synergistic effect of a negative temperature coefficient thermistor (NTC) and the circuit. NTC thermistors exhibit a non-linear relationship between their resistance and temperature, with the resistance decreasing as temperature increases. By forming a voltage divider circuit with the NTC thermistor and a fixed resistor, temperature changes are converted into voltage changes. After amplification, filtering, and analog-to-digital conversion, this becomes a digital signal. The controller compares this signal with the set temperature value and outputs a control signal to drive the heating or cooling components. Simultaneously, the NTC continuously monitors the temperature and feeds it back to the controller, forming a closed loop that stabilizes the temperature near the set value, thus ensuring that the gas can be discharged at a consistently high temperature.

[0059] The gas within channel 113 can flow towards the first opening 111 after its temperature is regulated by the temperature regulating component 140. In this embodiment, the temperature regulating component 140 has a heating function, which can raise the temperature of the gas within channel 113. The high-temperature gas can be discharged from the second opening 112, raising the chamber temperature and preventing warping, cracking, and other problems in the three-dimensional object. In another embodiment, the temperature regulating component 140 has a cooling function, which can lower the temperature of the gas within channel 113. The low-temperature gas can be discharged from the first opening 111, lowering the temperature of the material extruded from the nozzle 202 and meeting the cooling requirements during the layer-by-layer printing process.

[0060] Both the temperature regulating component 140 and the drive module are located inside the main body 110. The temperature regulating component 140 can cooperate with the drive component 130. Under the combined action of the drive component 130 and the temperature regulating component 140, high-temperature gas or low-temperature gas can be quickly discharged. For example, the ventilation module 100 can discharge low-temperature gas through the first port 111. The ventilation module 100 can be used as a cooling fan, acting on the material extruded from the nozzle 202 to assist in cooling and dissipating heat from the three-dimensional object. Alternatively, the ventilation module 100 can discharge high-temperature gas through the second port 112. The ventilation module 100 can also be used as a heating fan, causing the chamber temperature of the 3D printer to rise rapidly. In this way, the ventilation module 100 can simultaneously function as a cooling fan and a heating fan, saving costs and reducing the number of fans. With only one fan, the ventilation module 100 can achieve multiple functions such as cooling the three-dimensional model, reducing temperature, and heating the chamber, thus improving space utilization. Furthermore, the ventilation module 100 enables the 3D printer to be compatible with the use of various high and low temperature consumables, thereby allowing the 3D printer to adapt to various printing environments with different working conditions.

[0061] According to the ventilation module 100 of this application, used in a 3D printer, the ventilation module 100 includes a main body 110, a driving component 130, and a temperature regulating component 140. The main body 110 includes a first inlet 111, a second inlet 112, and a channel 113, with the first inlet 111 and the second inlet 112 connected through the channel 113. The driving component 130 is located in the channel 113 and is rotatable to drive the gas flow in the channel 113. The temperature regulating component 140 is located in the channel 113, between the first inlet 111 and the driving component 130, and is configured to regulate the temperature of the gas in the channel 113. In this way, the ventilation module 100 can realize both cavity heating and cooling functions, reduce the number of driving components 130, reduce costs, enable the 3D printer to be compatible with the use of various high and low temperature consumables, adapt to various printing environments under different working conditions, and achieve high overall space utilization.

[0062] The ventilation module 100 also includes a purification component 150, which is located inside the main body 110. Furthermore, the purification component 150 is located within the channel 113. The purification component 150 can be connected to the main body 110 by means of clips or screws to prevent the ventilation module 100 from shaking or shifting. The purification component 150 is detachably connected to the main body 110. This allows the purification component 150 to be replaced periodically.

[0063] The ventilation module 100 can filter gaseous impurities, preventing them from entering the printing material and also preventing blockages caused by impurities entering the nozzle 202. For example, the purification component 150 can be a filter element. The filter element contains filter paper with a fine fibrous structure, which can effectively intercept impurities such as dust, pollen, and particulate matter in the air.

[0064] The purification component 150 can also reduce noise. For example, the filter element is typically made of porous materials, such as glass fiber or activated carbon fiber. Porous materials have numerous tiny pores and channels. When sound waves enter the pores, some are absorbed due to the interaction between the gas and the pore walls, thus achieving sound absorption and noise reduction.

[0065] The purification component 150 can prevent excessive noise generated during the operation of the drive component 130. Preferably, the purification component 150 can be disposed adjacent to the drive component 130. The purification component 150 can be disposed at the first port 111 or at the second port 112. Further, the purification component 150 is located between the first port 111 and the drive component 130, or the purification component 150 is located outside the second port 112.

[0066] For example, the purification component 150 can be located between the first port 111 and the driving component 130. In embodiments of this disclosure, the purification component 150 can be located between the first port 111 and the temperature regulating component 140. Gas can be discharged from the first port 111 under the combined action of the driving component 130 and the temperature regulating component 140. Gas whose temperature has been regulated by the temperature regulating component 140 can be purified by the purification component 150 and then discharged from the first port 111.

[0067] In embodiments of this disclosure, the purification component 150 may be disposed between the first port 111 and the drive component 130. The purification component 150 may also be located between the temperature regulating component 140 and the drive component 130. The purification component 150 and the temperature regulating component 140 are spaced apart. This avoids both the heat generated by the operation of the drive component 130 interfering with the temperature regulating component 140 and the absorption of heat from the gas by the purification component 150.

[0068] The temperature regulating component 140 and the driving component 130 are spaced apart. The purification component 150 may also be located between the temperature regulating component 140 and the first outlet 111. The purification component 150 can absorb noise from the driving component 130 and filter the gas. The gas can be discharged from the first outlet 111 under the action of the driving component 130. The gas is first filtered by the purification component 150, and then the filtered gas is conditioned by the temperature regulating component 140 before being discharged through the first outlet 111. In this way, the purification component 150 can reduce noise and filter gas, thus reducing the noise of the ventilation module 100 and ensuring that the gas discharged from the first outlet 111 is cleaner, preventing pollution of the 3D printer's printing environment.

[0069] As an optional implementation, the purification component 150 is located between the drive component 130 and the first port 111. The temperature regulating component 140 is located between the drive component 130 and the second port 112.

[0070] Gas from the second port 112, after its temperature is regulated by the temperature regulating member 140, can flow into the driving member 130. Under the action of the driving member 130, the gas is discharged from the first port 111. The gas first passes through the temperature regulating member 140 to regulate its temperature, and then passes through the purification member 150 for filtration. The filtered gas can then be discharged through the first port 111.

[0071] The gas from the first port 111 can be filtered by the purification component 150 before entering the temperature regulating component 140. The gas can also be heated or cooled by the temperature regulating component 140. Driven by the driving component 130, the gas can be discharged through the second port 112, thereby ensuring the temperature of the gas discharged from the second port 112. In this way, the temperature regulating component 140 can adjust the temperature of the discharged gas to increase or decrease, meeting the printing requirements of different working conditions.

[0072] The purification component 150 can be disposed outside the ventilation module 100. In the embodiments of this disclosure, the purification component 150 is disposed outside the first inlet 111. The purification component 150 can also achieve the functions of filtration and noise reduction. Gas outside the ventilation module 100 can enter the ventilation module 100 through the purification component 150, allowing cooler and cleaner gas to enter the ventilation module 100, making the environment inside the ventilation module 100 cleaner.

[0073] In embodiments of this disclosure, the purification component 150 is located outside the second port 112. The purification component 150 can absorb noise from the drive component 130 and also filter gas. Gas can be filtered by the second port 112 and then flow into the drive component 130. Gas discharged from the second port 112 can also be filtered by the purification component 150. Gas can be discharged through the second port 112 under the drive of the drive component 130, thereby ensuring the cleanliness of the gas discharged from the second port 112. In this way, the purification component 150 can reduce noise and also filter gas, thus reducing the noise of the ventilation module 100 and ensuring that the gas discharged from the second port 112 is cleaner, preventing contamination of the 3D printer's printing environment.

[0074] The drive component 130, temperature regulating component 140, and purification component 150 are all located within the main body 110. The drive component 130, temperature regulating component 140, and purification component 150 can work together. To avoid mutual interference during operation, the drive component 130, temperature regulating component 140, and purification component 150 can be spaced apart.

[0075] Specifically, the main body 110 includes a first chamber 114, a second chamber 115, and an intermediate chamber 116, with a channel 113 passing through the first chamber 114, the second chamber 115, and the intermediate chamber 116. Gas can flow in the first chamber 114, the second chamber 115, and the intermediate chamber 116.

[0076] The first chamber 114 and the intermediate chamber 116 are arranged adjacent to each other. The first chamber 114 and the intermediate chamber 116 are connected. Gas can flow from the first chamber 114 to the intermediate chamber 116, or gas can flow from the intermediate chamber 116 to the first chamber 114.

[0077] The second chamber 115 and the intermediate chamber 116 are arranged adjacent to each other. The intermediate chamber 116 is connected to the second chamber 115. Gas can flow from the intermediate chamber 116 to the second chamber 115, or gas can flow from the second chamber 115 to the intermediate chamber 116.

[0078] For example, gas flows into the intermediate chamber 116 through the second chamber 115, and then into the first chamber 114 through the intermediate chamber 116. Or, for another example, gas flows into the intermediate chamber 116 through the first chamber 114, and then into the second chamber 115 through the intermediate chamber 116.

[0079] In the embodiments of this disclosure, the first chamber 114 is located above the second chamber 115 and the intermediate chamber 116. The first chamber 114 is located above the intermediate chamber 116 along the height direction D1 of the ventilation module 100. The first chamber 114 is connected to the intermediate chamber 116 along the height direction D1 of the ventilation module 100. The second chamber 115 protrudes from the first chamber 114 and the intermediate chamber 116 along the thickness direction D2 of the ventilation module 100. The second chamber 115 is located on one side of the intermediate chamber 116 along the thickness direction D2 of the ventilation module 100. The second chamber 115 is connected to the intermediate chamber 116 along the thickness direction D2 of the ventilation module 100. The height direction D1 of the ventilation module 100 is perpendicular to the thickness direction D2 of the ventilation module 100.

[0080] In another alternative implementation, the intermediate chamber 116 is located between the first chamber 114 and the second chamber 115. The intermediate chamber 116 is located between the first chamber 114 and the second chamber 115 along the height direction D1 of the ventilation module 100. The first chamber 114 is located above the intermediate chamber 116 along the height direction D1 of the ventilation module 100. The intermediate chamber 116 is located above the second chamber 115 along the height direction D1 of the ventilation module 100. The first chamber 114 and the intermediate chamber 116 are connected along the height direction D1 of the ventilation module 100. The second chamber 115 and the intermediate chamber 116 are connected along the height direction D1 of the ventilation module 100.

[0081] The first chamber 114 has a first opening 111, which is located on the side of the first chamber 114. The first opening 111 is disposed on the side of the first chamber 114 along the thickness direction D2 of the ventilation module 100. Gas can flow into the first chamber 114 through the first opening 111. Gas in the first chamber 114 can also be discharged through the first opening 111.

[0082] The second chamber 115 has a second opening 112 located on its side. The second opening 112 is positioned along the thickness direction D2 of the ventilation module 100 on the side of the second chamber 115. Gas can enter the second chamber 115 through the second opening 112. Gas in the second chamber 115 can also exit through the second opening 112. Gas in the second chamber 115 can enter the intermediate chamber 116 through the second opening 112. Gas in the intermediate chamber 116 can also enter the second chamber 115 through the second opening 112.

[0083] The driving member 130 enables gas to flow into the first port 111 and also enables gas to flow into the second port 112. Preferably, the driving member 130 is disposed in the intermediate chamber 116. The first chamber 114 and the intermediate chamber 116 space the first port 111 from the driving member 130. The second chamber 115 and the intermediate chamber 116 space the second port 112 from the driving member 130. The driving member 130 enables the gas to flow sufficiently within the channel 113.

[0084] The purification component 150 is located in the second chamber 115, spaced apart from the drive component 130. The purification component 150 and drive component 130 are spaced apart. The purification component 150 has a larger size, which reduces intake resistance, increases air velocity, and reduces the load on the drive component 130, thereby achieving better filtration. The size of the purification component 150 is smaller than the size of the second chamber 115. This provides space for installation, disassembly, and maintenance, allowing the purification component 150 to maximize filtration and noise reduction. Furthermore, the filter element is positioned close to the center of the fan, resulting in more uniform air contact and extending the filter element's lifespan.

[0085] The ventilation module 100 may include at least two purification components 150. The at least two purification components 150 are respectively disposed at a first inlet 111 and a second inlet 112. This improves the filtration effect and further reduces noise.

[0086] The temperature regulating component 140 has two modes: cooling and heating. The gas flow direction of the temperature regulating component 140 is different in the two modes.

[0087] As gas flows toward the first opening 111, the temperature regulating component 140 activates the cooling mode. The gas is cooled by the temperature regulating component 140 and discharged through the upper first opening 111. The cold air falls downwards inside the cavity of the 3D printer, thus lowering the temperature.

[0088] As gas flows toward the second port 112, the temperature regulating component 140 activates the heating mode. The gas is heated by the temperature regulating component 140 and discharged through the lower second port 112. The hot gas rises inside the cavity of the 3D printer, thus increasing its temperature.

[0089] When the temperature regulating component 140 is activated, gas can flow from the second port 112 to the first port 111. This allows the gas temperature to be adjusted as it flows through the channel 113, helping to maintain the gas temperature within a suitable range and providing optimal operating conditions for the 3D printer. Furthermore, the temperature-adjusted gas can increase or decrease the temperature of the ventilation module 100 through heat exchange, preventing damage or performance degradation caused by excessive cooling or heating.

[0090] In this way, the drive component 130, temperature regulating component 140, and purification component 150 are spaced apart to avoid mutual interference, while also allowing the gas to be discharged under the combined action of the three components. The discharged gas can act on the nozzle 202.

[0091] like Figure 2 As shown, the ventilation module 100 also includes a printing tool head, which includes a nozzle 202. The nozzle 202 is located at the front end of the printing tool head. The printing tool head acts on the 3D printer. The printing tool head is movable in a plane perpendicular to the height direction D1 of the 3D printer. The printing tool head can heat and pressurize the stored printing material, and extrude the material from the nozzle 202 through precise control.

[0092] Low-temperature consumables have relatively low melting points, such as polylactic acid (PLA) and thermoplastic polyester (PETG). Low-temperature consumables can precisely control the temperature under the action of the temperature regulating component 140, avoiding excessively high temperatures that could lead to material overheating, decomposition, or changes in properties. Furthermore, they enable uniform extrusion and molding of the material at low temperatures.

[0093] In this embodiment, when the printing material of the 3D printer is a low-temperature consumable, the temperature regulating component 140 is either in cooling mode or in a closed state. Gas can flow into the drive component 130 and the purification component 150 through the second port 112. The drive component 130 can drive the gas into the temperature regulating component 140. The temperature regulating component 140 can lower the gas temperature, and the gas is discharged from the first port 111 at a low temperature. Alternatively, the temperature regulating component 140 is not working, and the gas is discharged from the first port 111 at room temperature. The temperature of the gas at room temperature is lower than the temperature of the nozzle 202, and the room-temperature gas can exchange heat with the three-dimensional object. In this way, the ventilation module 100 can discharge cold air to act on the three-dimensional object of the 3D printer, so that the three-dimensional object can quickly solidify and form through cooling. The ventilation module 100 can also, according to the actual situation, change the rotation direction of the drive component 130 so that the low-temperature gas can also be discharged through the second port 112, which is not limited in this embodiment.

[0094] The printing material can be high- or low-temperature filaments. High-temperature filaments have high melting points, such as polyamide (PA) and polycarbonate (PC). High-temperature filaments can reach and maintain a processable molten state under the action of the temperature regulating component 140. In embodiments of this disclosure, when the printing material of the 3D printer is a high-temperature filament, the temperature regulating component 140 is in heating mode. Gas flows downwards into the temperature regulating component 140 through the first port 111. The temperature regulating component 140 can raise the gas temperature, and the high-temperature gas, after passing through the driving component 130 and the purification component 150, is discharged at high temperature from the second port 112. In this way, the ventilation module 100 can discharge hot air to act on the heated bed 201 of the 3D printer, raising its temperature and ensuring temperature uniformity, thus preventing warping of the three-dimensional object printed by the 3D printer.

[0095] The ventilation module 100 can also change the rotation direction of the drive component 130 according to the actual situation, so that the high temperature gas can also be discharged through the first port 111. This embodiment does not limit this.

[0096] The first inlet 111 is located on the side of the first chamber 114 along the thickness direction D2 of the ventilation module 100. The first inlet 111 is positioned towards the nozzle 202. The first inlet 111 is positioned parallel to the plane perpendicular to the height direction D1 of the 3D printer, facing the nozzle 202. The vertical height difference between the first inlet 111 and the nozzle 202 does not exceed 5mm. In this way, by controlling the height difference between the first inlet 111 of the ventilation module 100 and the plane of the nozzle 202, the 3D printer controls the vertical tolerance of the first inlet 111 on the plane of the nozzle 202. The gas discharged from the ventilation module 100 can act on the nozzle 202 and the 3D model, ensuring the cooling effect of the model and avoiding insufficient cooling of the 3D model due to excessive height difference.

[0097] The second opening 112 is located on the side of the second chamber 115 along the thickness direction D2 of the ventilation module 100. The second opening 112 is positioned towards the base plate. The second opening 112 is positioned parallel to the plane perpendicular to the height direction D1 of the 3D printer and towards the base plate. In this way, by controlling the height difference between the second opening 112 of the ventilation module 100 and the plane of the heated bed 201, the 3D printer controls the height difference of the second opening 112 on the plane of the heated bed 201. The gas discharged from the ventilation module 100 can diffuse evenly during the rising process, realizing cavity heating, ensuring the heating effect of the model, improving uniformity, and avoiding the 3D model not being heated effectively due to excessive height difference, thus preventing the model from warping.

[0098] The 3D printer controls the vertical tolerances of the first inlet 111 and the second inlet 112 of the ventilation module 100 relative to the plane of the nozzle 202, enabling the ventilation module 100 to perform heating and cooling functions. In this embodiment, the "plane perpendicular to the height direction of the 3D printer" can be a horizontal plane or the plane containing the upper surface of the heated bed 201. Gas can flow rapidly through the first inlet 111 to the nozzle 202, accelerating the cooling rate of the printing material, preventing material deformation, and helping to improve the dimensional accuracy and surface quality of the printed parts. Furthermore, it can create a more uniform flow field around the nozzle 202, reducing gas turbulence and disturbance, and avoiding adverse effects on the printed parts.

[0099] In embodiments of this disclosure, when the 3D printer requires a higher airflow for heat dissipation, the purification component 150 can be removed from the ventilation module 100. Gas is then directly discharged from the ventilation module 100 via the drive component 130 and the temperature regulation component 140, preventing the purification component 150 from reducing gas velocity, reducing intake resistance, and allowing the gas to act on the 3D printer more quickly.

[0100] In the embodiments of this disclosure, when the 3D printer requires a heat dissipation environment with higher airflow, the relative position of the second port 112 and the purification component 150 can be adjusted by switching the air duct, thereby reducing the contact area between the gas and the purification component 150, so that the gas can be directly discharged or discharged through the channel inside the purification component 150, reducing the air intake resistance.

[0101] The ventilation module 100 also includes a filter drive component disposed on the purification component 150. At least a portion of the filter drive component is movable relative to the main body 110. At least a portion of the filter drive component is movable along the height direction D1 of the ventilation module 100. For example, the filter component internally includes a gear and a rack. The gear is rotatable under the drive of a motor. The gear is connected to the rack. Rotation of the gear drives the rack to move. The rack is movable relative to the main body 110.

[0102] The filter drive component is fixedly connected to the purification component 150. The filter drive component can be connected to the purification component 150 via screws, nuts, or clips. The filter drive component enables the purification component 150 to move. Specifically, the rack of the filter drive component is connected to the purification component 150. The rack can drive the purification component 150 to move. The purification component 150 moves along the height direction D1 of the ventilation module 100. The filter drive component and the purification component 150 cooperate to achieve the switching of gas flow channels.

[0103] The filter drive component can position the relative position of the purification member 150 and the second port 112. As an alternative embodiment, the filter drive component can align at least a portion of the purification member 150 with the second port 112. As another alternative embodiment, the filter drive component can offset the purification member 150 from the second port 112. The purification member 150 can move relative to the second port 112, changing the relative position of the air inlet of the purification member 150 with the second port 112, thus offsetting the purification member 150 from the second port 112. This creates a specific flow path for the gas before it enters the purification member 150, preventing the gas from directly flowing into the purification member 150 from the second port 112.

[0104] A drainage assembly 120 is also provided in the intermediate chamber 116, and the drainage assembly 120 is disposed above the drive member 130. The drainage assembly 120 is located above the drive member 130 along the height direction D1 of the ventilation module 100. The drainage assembly 120 is located between the drive member 130 and the temperature regulating member 140. Gas at the drive member 130 can flow to the temperature regulating member 140 through the drainage assembly 120. Alternatively, gas at the temperature regulating member 140 can flow to the drive member 130 through the drainage assembly 120.

[0105] The flow guiding component 120 can guide the direction of gas flow, reduce airflow turbulence and eddy current generation, lower wind resistance, and improve gas flow efficiency. The flow guiding component 120 includes a large opening 121 and a small opening 122, which are connected. The size of the large opening 121 is larger than the size of the small opening 122. The large opening 121 can accommodate a large area of ​​gas. The small opening 122 converges and guides the gas, directing it to a specific location. Gas can flow between the large opening 121 and the small opening 122.

[0106] The smaller opening 122 is closer to the drive member 130 than the larger opening 121. The larger opening 121 is closer to the temperature regulating member 140 than the smaller opening 122. The larger opening 121 is located above the smaller opening 122 along the height direction D1 of the ventilation module 100. A negative pressure zone is formed in its vicinity when the drive member 130 is running. The smaller opening 122 has a smaller cross-sectional area than the larger opening 121, resulting in a faster flow rate and improved efficiency. Gas from the first opening 111 can move quickly toward the drive member 130 and then be discharged through the second opening 112. For example, hot air can have a faster flow rate through the drainage assembly 120 and be discharged through the second opening 112, thus achieving better heating efficiency. This makes it easier for gas to be drawn into the drainage assembly 120, thereby achieving more efficient and smoother gas drainage and avoiding gas backflow. Of course, the driving member 130 can also rotate in the opposite direction, and the gas from the driving member 130 can flow through the large opening 121 to the first opening 111, thereby expanding the flow area of ​​the gas.

[0107] like Figure 3 and Figure 4 As shown, to improve the flow effect of the flow diversion assembly 120, the flow diversion assembly 120 may include multiple flow diversion plates 123, with adjacent flow diversion plates 123 spaced apart. Gas can flow in the space between adjacent flow diversion plates 123. One end of the multiple flow diversion plates 123 forms a large opening 121, and the other end of the multiple flow diversion plates 123 forms a small opening 122. The positions and angles between the multiple flow diversion plates 123 can be different, thereby adjusting the flow direction and velocity distribution of the gas, making the gas flow more uniform. Gas can flow in the same direction through the space between the multiple flow diversion plates 123. The flow diversion assembly 120 may also include flow diversion pipes, flow diversion channels, etc., to provide flow space for the gas.

[0108] The drive component 130 is provided with an air outlet 131, through which gas can flow to the diversion assembly 120. Multiple diversion plates 123 correspond to the air outlet 131. Gas can flow into the diversion assembly 120 through the air outlet 131. Gas can be diverted through the diversion assembly 120 to the temperature regulating component 140.

[0109] Multiple guide plates 123 near the drive member 130 collectively form a small opening 122. Multiple guide plates 123 near the temperature regulating member 140 collectively form a large opening 121. The small opening 122 is connected to the large opening 121. Gas at the outlet 131 can flow from the small opening 122 to the large opening 121. Alternatively, gas at the temperature regulating member 140 can flow from the large opening 121 to the small opening 122.

[0110] According to another alternative embodiment of this application, an intermediate chamber 116 is located between a first chamber 114 and a second chamber 115. The intermediate chamber 116 is located between the first chamber 114 and the second chamber 115 along the height direction of the ventilation module 100. The intermediate chamber 116 communicates with the first chamber 114. The intermediate chamber 116 is perpendicular to the first chamber 114. The first chamber 114 is located above the intermediate chamber 116 along the height direction of the ventilation module 100. The intermediate chamber 116 also communicates with the second chamber 115. The intermediate chamber 116 is perpendicular to the second chamber 115. The second chamber 115 is located below the intermediate chamber 116 along the height direction of the ventilation module 100.

[0111] A drive member 130 and a purification member 150 are disposed in the intermediate chamber 116. Gas from the intermediate chamber 116 can enter the first chamber 114 and the second chamber 115 respectively. The drive member 130 can draw gas into the intermediate chamber 116. The drainage assembly 120 can drain the gas from the drive member 130 to the temperature regulating member 140. The small opening 122 of the drainage assembly 120 is close to the drive member 130, and the large opening 121 of the drainage assembly 120 is close to the temperature regulating member 140.

[0112] The first chamber 114 has a first opening 111 through which gas from the intermediate chamber 116 can be discharged. A temperature regulating member 140 can lower the temperature of the gas. The cooled gas can then enter the first chamber 114 and be discharged through the first opening 111.

[0113] The second chamber 115 has a second opening 112. Gas from the intermediate chamber 116 can be discharged through the second opening 112. The temperature regulating member 140 can increase the temperature of the gas. The heated gas can enter the second chamber 115 and be discharged through the second opening 112.

[0114] The ventilation module 100 of this application, by incorporating the purification component 150, the drive component 130, and the temperature regulating component 140 within the main body 110, can cooperate to achieve functions such as heating, cooling, and filtration, thereby improving space utilization. The ventilation module 100 is provided with a first inlet 111 and a second inlet 112, allowing the gas to be conditioned by the temperature regulating component 140, with low-temperature gas exiting from the first inlet 111 and flowing downwards, or high-temperature gas exiting from the second inlet 112 and flowing upwards.

[0115] The purification component 150 can be positioned at the second inlet 112 or the air outlet 131 to achieve filtration and noise reduction functions. The drive component 130 accelerates the gas flow speed, reduces the number of fans, and allows the purification component 150, drive component 130, and temperature regulation component 140 to work together, increasing the integration of the ventilation module 100. The temperature regulation component 140 can raise or lower the gas temperature so that the first inlet 111 can discharge cold or hot air to act on the 3D printer, achieving cooling or heating functions. This allows the 3D printer to be compatible with the use of various high and low temperature consumables, enabling the printing material to cool and solidify rapidly, and also enabling cavity heating to prevent the three-dimensional object from warping.

[0116] The ventilation module 100 integrates cooling, heating, and filtration functions, saving costs and reducing the number of fans. This allows the ventilation module 100 to perform multiple functions such as cooling the 3D model, lowering the temperature, and heating the chamber with only one fan, increasing the overall machine's compactness and improving space utilization. With the assistance of the temperature regulation component 140 and the drive component 130, the ventilation module 100 can output hot or cold air from the first outlet 111 and the second outlet 112, achieving precise temperature control and adaptability to various printing scenarios. Furthermore, the ventilation module 100 enables the 3D printer to be compatible with various high and low temperature consumables, allowing it to adapt to different printing environments.

[0117] This application also provides a 3D printer, which includes the ventilation module 100 described above.

[0118] According to the 3D printer of this application, the ventilation module 100 includes a main body 110, a driving component 130, and a temperature regulating component 140. The main body 110 includes a first inlet 111, a second inlet 112, and a channel 113, with the first inlet 111 and the second inlet 112 connected through the channel 113. The driving component 130 is located in the channel 113 and is rotatable to drive the gas flow in the channel 113. The temperature regulating component 140 is located in the channel 113, between the first inlet 111 and the driving component 130, and is configured to regulate the temperature of the gas in the channel 113. In this way, the ventilation module 100 can realize both cavity heating and cooling functions, reduce the number of driving components 130, reduce costs, enable the 3D printer to be compatible with the use of various high and low temperature consumables, adapt to various printing environments under different working conditions, and achieve high overall space utilization.

[0119] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” appearing herein can refer to one component being directly attached to another component or one component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0120] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A venting module for a 3D printer, characterized in that, The ventilation module includes: The main body includes a first port, a second port, and a channel, wherein the first port and the second port are connected through the channel; A driving member, located in the channel, is rotatable to drive gas flow in the channel; and A temperature regulating component is located in the channel, between the first port and the driving component, and the temperature regulating component is configured to regulate the temperature of the gas in the channel.

2. The ventilation module according to claim 1, characterized in that, The ventilation module also includes a purification component, which is located within the channel. The purification component is located between the first inlet and the driving component, or, The purification component is located outside the second inlet.

3. The ventilation module according to claim 1, characterized in that, The main body includes a first chamber, a second chamber, and an intermediate chamber. The first chamber has a first opening, the second chamber has a second opening, and the driving component is disposed in the intermediate chamber.

4. The ventilation module according to claim 3, characterized in that, The first opening is located above the ventilation module, and the second opening is located below the ventilation module; The ventilation module also includes a printing tool head, which includes a nozzle, and the first opening is disposed toward the nozzle along a direction parallel to a plane perpendicular to the height direction of the 3D printer.

5. The ventilation module according to claim 4, characterized in that, The ventilation module further includes a purification component located in the second chamber, and the temperature regulating component located in the first chamber, or the purification component is disposed outside the second opening.

6. The ventilation module according to claim 5, characterized in that, The driving component can be an axial flow fan, and the driving component can rotate in two directions. When the driving component rotates in one direction, the gas flows from the first port to the second port; when the driving component rotates in the other direction, the gas flows from the second port to the first port. When the gas flows toward the first inlet, the temperature regulating component switches to cooling mode; when the gas flows toward the second inlet, the temperature regulating component switches to heating mode.

7. The ventilation module according to claim 6, characterized in that, The ventilation module also includes a filter drive component, which enables the purification component to be offset from the second opening.

8. The ventilation module according to claim 3, characterized in that, The intermediate chamber is also provided with a drainage assembly, which includes a large opening and a small opening, with the small opening being closer to the driving member than the large opening.

9. The ventilation module according to claim 8, characterized in that, The flow diversion assembly includes multiple flow diversion plates, which are arranged at intervals. The driving component is provided with an air outlet, and the multiple flow diversion plates correspond to the air outlet. The portions of the multiple drainage plates near the driving component together form a small opening. The portions of the multiple drainage plates near the temperature regulating component together form a large opening.

10. A 3D printer, characterized in that, The 3D printer includes a ventilation module according to any one of claims 1-9.

11. The 3D printer according to claim 10, characterized in that, The 3D printer also includes a nozzle, with the first opening located above the second opening along the height direction of the 3D printer and facing the nozzle.

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