Exhaust cooling device of 3D printer

Abstract

The utility model relates to an exhaust cooling device of a 3D (three-dimensional) printer, which is used for heat dissipation of a nozzle driving power supply of the 3D printer and comprises a shell, an air inlet is arranged at the front end of the shell, the shell is connected with an air feeder through an air inlet pipe, an air outlet is arranged at the rear end of the shell, and an airflow channel is arranged in the shell. A plurality of nozzle driving power sources are arranged in the airflow channel in the airflow direction, a nozzle control circuit board is arranged on the upper surface of a top plate of the shell, and the top plate is a heat conduction plate and can conduct heat of the circuit board into the airflow channel and take away the heat by airflow. Connecting wings are arranged on the two sides of the shell, so that the device can be conveniently installed on the 3D printer. The lower part of the front end of the shell is provided with a plurality of wire passing windows for connecting flat cables of the nozzle driving power supply and the printer nozzle to pass through. The air flow channel, the heat conduction structure and the installation design are adopted, the heat dissipation efficiency is remarkably improved, the operation temperature of equipment is reduced, the service life is prolonged, meanwhile, installation and maintenance are convenient, and applicability is high.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer equipment technology, and in particular to a 3D printer exhaust cooling device. Background Technology

[0002] 3D printing technology, as a rapid prototyping technology, has been widely used in industrial manufacturing, medical, and educational fields in recent years. Among these, wax-based 3D printing technology, due to its high precision, high surface quality, and applicability to processes such as investment casting, has significant application value in jewelry design and precision parts manufacturing. However, during operation, electronic components such as the nozzle drive power supply and nozzle control circuit board generate a large amount of heat. If this heat cannot be dissipated in time, the component temperature may become too high, affecting printing accuracy, equipment stability, and even shortening component lifespan. Therefore, an efficient heat dissipation device is crucial for the normal operation of a 3D printer.

[0003] Currently, wax-based 3D printers primarily rely on direct fan blowing or simple air duct designs for heat dissipation. However, this method suffers from several problems: First, in environments with waste wax dust, the dust can easily enter the nozzle drive power supply and circuit board through the cooling duct, affecting heat dissipation and potentially causing short circuits or damage to electronic components. Second, simple air duct designs struggle to achieve uniform airflow distribution, resulting in poor localized heat dissipation. Furthermore, traditional heat dissipation structures lack effective heat conduction and exhaust mechanisms, failing to meet the heat dissipation requirements of high-power electronic components. Therefore, there is an urgent need for a heat dissipation device that effectively prevents dust ingress, optimizes airflow distribution, and improves heat dissipation efficiency to address the shortcomings of existing technologies. Utility Model Content

[0004] To address the existing problems, this utility model proposes an exhaust cooling device for 3D printers. By optimizing the airflow channel, heat conduction structure, and installation design, it significantly improves heat dissipation efficiency, reduces the operating temperature of the equipment, and also features a simple structure, convenient installation, and the ability to meet the heat dissipation requirements of wax-based 3D printers.

[0005] This utility model proposes an exhaust cooling device for a 3D printer, used for heat dissipation of the nozzle drive power supply of the 3D printer. The exhaust cooling device includes a housing, with an air inlet at the front end of the housing, which is connected to a blower through an air inlet pipe, and an air outlet at the rear end of the housing. An airflow channel is provided inside the housing, and multiple nozzle drive power supplies are arranged in the airflow channel along the airflow direction. A guide plate is provided between the nozzle drive power supplies to optimize airflow distribution and improve heat dissipation efficiency.

[0006] Preferably, the air inlet pipe is a bend, including a horizontal section and a vertical section. The far end of the horizontal section is connected to the air inlet of the housing, and the far end of the vertical section is connected to a pipe joint, which is used to connect to the blower.

[0007] Preferably, the air inlet pipe is a bend, including a horizontal section and a vertical section. The far end of the horizontal section is connected to the air inlet of the housing, and the far end of the vertical section is connected to a pipe joint, which is used to connect to the blower.

[0008] Preferably, the horizontal and vertical sections of the air inlet duct adopt a circular arc transition structure to reduce airflow resistance and improve air delivery efficiency.

[0009] Preferably, a temperature sensor is installed in the airflow channel to monitor the airflow temperature in real time and automatically adjust the speed of the blower based on the monitoring results.

[0010] Preferably, connecting wings are provided on the outer surfaces of the two side plates of the housing, and mounting holes are provided on the connecting wings for fixing the exhaust cooling device to the 3D printing equipment by bolts.

[0011] Preferably, the lower front end of the housing has multiple cable routing windows for the connection cable between the printhead drive power supply and the printer printhead to pass through.

[0012] The technical advantages of the exhaust cooling device for 3D printers provided by this utility model are as follows:

[0013] 1. By employing an air inlet, air outlet, and airflow channel, combined with the forced air delivery of the blower, the heat generated by the nozzle drive power supply and nozzle control circuit board can be quickly removed, significantly reducing the operating temperature of electronic components and ensuring the stability of the equipment during long-term operation.

[0014] 2. A filter is installed between the air inlet pipe and the air outlet pipe, and the power supply for the nozzle drive is located in the airflow channel inside the housing, which effectively prevents waste wax dust from entering the housing and avoids dust contamination and damage to electronic components.

[0015] 3. By setting up guide vanes or guide structures in the airflow channels, ensure uniform airflow distribution, avoid local overheating, and improve overall heat dissipation efficiency.

[0016] 4. Connecting wings are provided on both sides of the housing, which facilitates quick installation of the device onto the 3D printer. The modular design facilitates equipment maintenance and reduces downtime. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the exhaust cooling device of the 3D printer according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the exhaust cooling device of the 3D printer installed on the printer according to an embodiment of the present invention;

[0020] Figure 3 This is one of the partial structural schematic diagrams of the exhaust cooling device of the 3D printer according to an embodiment of this utility model;

[0021] Figure 4 This is the second partial structural schematic diagram of the exhaust cooling device of the 3D printer according to an embodiment of this utility model.

[0022] Reference numerals: 1. Housing; 11. Top plate; 12. Side plate; 2. Air inlet; 3. Air inlet pipe; 31. Horizontal section; 32. Vertical section; 33. Pipe connector; 4. Air outlet; 5. Airflow channel; 6. Nozzle drive power supply; 7. Guide plate; 8. Nozzle control circuit board; 9. Connecting wing; 91. Mounting hole; 10. Wiring window Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The exhaust cooling device of the 3D printer in this embodiment includes a housing 1, an air inlet 2, an air inlet pipe 3, an air outlet 4, an airflow channel 5, a nozzle drive power supply 6, a guide plate 7, a nozzle control circuit board 8, a connecting wing 9, and a wire guide window 10.

[0025] The housing 1 has a rectangular structure and is made of aluminum alloy or a high thermal conductivity material. An air inlet 2 is located at the front end of the housing 1, and the air inlet 2 is connected to a blower (not shown in the figure) via an air inlet pipe 3 to introduce cooling airflow. An air outlet 4 is located at the rear end of the housing 1 to exhaust hot airflow. An airflow channel 5 is provided inside the housing 1. Three nozzle drive power supplies 6 are arranged along the airflow direction within the airflow channel 5. The three nozzle drive power supplies 6 are evenly distributed along the airflow channel 5 and dissipate heat through airflow cooling. A guide plate 7 is arranged between two adjacent nozzle drive power supplies 6 to optimize airflow distribution and improve heat dissipation efficiency.

[0026] The top plate 11 of the housing 1 is made of a high thermal conductivity material. The upper surface of the top plate 11 is provided with a nozzle control circuit board 8. A dust cover (not shown in the figure) is provided on the nozzle control circuit board 8 to prevent waste wax dust from entering. The lower surface of the top plate 11 is in direct contact with the airflow channel 4 to conduct the heat emitted by the nozzle control circuit board 8 through the top plate 11 into the airflow channel 4 and carry it away by the airflow, thereby achieving efficient heat dissipation.

[0027] The air inlet duct 3 is a bend, including a horizontal section 31 and a vertical section 32. The far end of the horizontal section 31 is connected to the air inlet 2 of the housing 1, and the far end of the vertical section 32 is connected to a pipe connector 33. The pipe connector 33 is used to connect to the blower. The horizontal section 31 and the vertical section 32 of the air inlet duct 3 adopt an arc transition structure to reduce airflow resistance and improve air delivery efficiency.

[0028] A temperature sensor is installed in the airflow channel 5 to monitor the airflow temperature in real time and automatically adjust the speed of the blower based on the monitoring results.

[0029] Connecting wings 9 are respectively provided on the outer surfaces of the two side plates 12 of the housing 1. The connecting wings 9 are provided with mounting holes 91 for fixing the exhaust cooling device to the 3D printing equipment by bolts.

[0030] Three cable guide windows 10 are located at the lower front end of the housing 1 and are arranged in a straight line. The cable guide windows 10 are used for the connection cable between the printhead drive power supply 6 and the printer printhead. The edges of the cable guide windows 10 are smooth and are equipped with rubber cable protectors to prevent the cable from being worn.

[0031] Airflow circulation: The blower introduces external air into the air inlet 2 of the housing 1 through the air inlet pipe. The airflow passes through the airflow channel 5, flows through the nozzle drive power supply 6 and the lower surface of the top plate 11, and after carrying away heat, it is discharged from the air outlet 4.

[0032] Heat conduction: The heat generated by the nozzle control circuit board 8 is conducted to the airflow channel 5 through the top plate 11 and carried away by the airflow, achieving efficient heat dissipation.

[0033] Dust protection: A filter is installed between the air inlet pipe 3 and the blower to prevent waste wax dust from entering the housing 1; the wire passage window 10 is equipped with a rubber wire protection sleeve to further prevent dust from entering.

[0034] This utility model's exhaust cooling device significantly improves the operational stability, printing accuracy, and equipment lifespan of 3D printers through its efficient heat dissipation, dust protection, airflow optimization, and convenient installation, while reducing maintenance costs. It is suitable for various industrial and application scenarios.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling device for exhaust fans in a 3D printer, used for heat dissipation of the nozzle drive power supply in a 3D printer, characterized in that, The device includes a housing (1), an air inlet (2) at the front end of the housing (1), the air inlet (2) being connected to a blower via an air inlet pipe (3), an air outlet (4) at the rear end of the housing (1), an airflow channel (5) inside the housing (1), and multiple nozzle drive power supplies (6) arranged along the airflow direction inside the airflow channel (5), with guide plates (7) arranged between the nozzle drive power supplies (6) to optimize airflow distribution and improve heat dissipation efficiency.

2. The exhaust cooling device according to claim 1, characterized in that, The top plate (11) of the housing (1) is provided with a nozzle control circuit board (8) on its upper surface. The top plate (11) is made of a high thermal conductivity material, and its lower surface is in contact with the airflow channel (5) to conduct the heat emitted by the nozzle control circuit board (8) through the top plate (11) into the airflow channel (5) and carry it away by the airflow, thereby achieving efficient heat dissipation.

3. The exhaust cooling device according to claim 2, characterized in that, The air inlet pipe (3) is a bend, including a horizontal section (31) and a vertical section (32). The far end of the horizontal section (31) is connected to the air inlet (2) of the housing (1), and the far end of the vertical section (32) is connected to a pipe joint (33), which is used to connect to the blower.

4. The exhaust cooling device according to claim 3, characterized in that, The horizontal section (31) and vertical section (32) of the air inlet pipe (3) adopt an arc transition structure to reduce airflow resistance and improve air delivery efficiency.

5. The exhaust cooling device according to claim 1, characterized in that, A temperature sensor is installed in the airflow channel (5) to monitor the airflow temperature in real time and automatically adjust the speed of the blower according to the monitoring results.

6. The exhaust cooling device according to claim 1, characterized in that, Connecting wings (9) are respectively provided on the outer surfaces of the two side plates (12) of the housing (1). The connecting wings (9) are provided with mounting holes (91) for fixing the exhaust cooling device to the 3D printing equipment by bolts.

7. The exhaust cooling device according to claim 1, characterized in that, The lower front end of the housing (1) has multiple cable routing windows (10) for the connection cable between the printhead drive power supply (6) and the printer printhead to pass through.

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