A waterproof and dustproof centrifugal cooling fan assembly

Abstract

This invention discloses a waterproof and dustproof centrifugal cooling fan assembly, including a centrifugal fan housing, an exhaust pipe installed at the air outlet of the centrifugal fan housing, and a check valve installed on the exhaust pipe to prevent water vapor backflow. A blower assembly is installed on the side of the centrifugal fan housing, and a filter assembly is installed on the centrifugal fan housing at a position corresponding to the air inlet of the centrifugal fan housing. The blower assembly includes a fan motor installed on the side of the centrifugal fan housing, and a fan impeller that matches the centrifugal fan housing is detachably installed on the output shaft of the fan motor. This invention features a dustproof filter at the air inlet, which efficiently filters dust, keeps the internal components clean, extends service life, improves air quality, and is easy to install and maintain. The exhaust end has a check valve to exhaust air during operation and prevent backflow when the machine is stopped, protecting internal components. The fan impeller is easy to install, using mounting holes and bolts to shorten installation time and facilitate subsequent maintenance and replacement.

Description

Technical Field

[0001] This invention relates to the field of centrifugal fan technology, specifically to a waterproof and dustproof centrifugal cooling fan assembly. Background Technology

[0002] In the field of cooling fan equipment technology, centrifugal fans are widely used in various equipment and scenarios as important heat dissipation devices. Existing technologies, such as the three-phase centrifugal cooling fan disclosed in publication number CN215980003U, primarily focus on improving the matching degree between the device and the target mounting hole position to meet usage requirements. This three-phase centrifugal cooling fan includes a centrifugal cooling fan mounting mechanism, composed of a body, an adjustment body, and a mounting frame. By adjusting the cooperation of various components on the adjustment body, the relative position of the mounting frame and the body is adjusted, thereby improving the matching degree with the target mounting hole.

[0003] However, several problems remain to be solved in the practical application of centrifugal fans. Firstly, many centrifugal fans lack effective air intake filtration devices. During operation, dust and impurities in the air enter the fan's interior with the intake air, polluting the internal environment and potentially causing wear on internal components, affecting the fan's performance and lifespan. Secondly, during exhaust, when the blower assembly stops operating, moisture and other impurities can easily flow back into the exhaust pipe. This backflow of moisture and impurities may damage the fan's internal components, affecting its normal operation. Furthermore, the installation of the impeller in existing centrifugal fans is often inconvenient, increasing the difficulty of installation and maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproof and dustproof centrifugal cooling fan assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waterproof and dustproof centrifugal cooling fan assembly, comprising a centrifugal fan housing, an exhaust pipe installed on the air outlet of the centrifugal fan housing, and a check valve for preventing water vapor backflow installed on the exhaust pipe, a blower assembly installed on the side of the centrifugal fan housing, and a filter assembly installed on the centrifugal fan housing at a position corresponding to the air inlet of the centrifugal fan housing.

[0006] Optionally, the blower assembly includes a fan motor mounted on the side of the centrifugal fan housing, and a fan impeller that matches the centrifugal fan housing is detachably mounted on the output shaft of the fan motor.

[0007] Optionally, an impeller mounting bracket for mounting the fan impeller is installed on the output shaft of the fan motor.

[0008] Optionally, the side of the impeller mounting base is fixedly connected with mounting bolts, and the fan impeller is provided with mounting holes that match the mounting bolts.

[0009] Optionally, the filter assembly includes a mounting frame, which is fixedly installed at the air inlet position of the centrifugal fan housing, and a dust filter is detachably installed inside the mounting frame.

[0010] Optionally, both sides of the mounting frame are threaded with fixing bolts for fixing the dust filter, and both sides of the dust filter are provided with fixing holes that match the fixing bolts.

[0011] Optionally, a sealing ring that is sealed to the dust filter is installed on the side of the centrifugal fan housing at a position corresponding to the mounting frame.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. This invention provides a waterproof and dustproof centrifugal cooling fan assembly. A dust filter is installed at the air inlet of the casing, which efficiently filters dust and impurities from the air, maintaining the cleanliness of the fan's internal components, reducing wear and tear on parts to extend their service life, and improving airflow quality. The dust filter is connected to the mounting frame by fixing bolts, making disassembly and assembly convenient and facilitating regular cleaning and maintenance. At the exhaust end, a check valve installed on the exhaust pipe allows for normal exhaust during operation and automatically seals when the blower assembly stops, effectively preventing the backflow of moisture and other impurities, avoiding damage to internal components, and enhancing the fan's reliability and stability. Furthermore, the fan impeller is easily installed by mounting bolts on the side of the impeller mounting base via mounting holes, simplifying the operation process, shortening installation time, and facilitating subsequent disassembly, maintenance, or replacement, greatly improving the user experience and maintenance efficiency.

[0014] 2. In this invention, a dust filter is installed at the air inlet of the centrifugal fan casing. This dust filter effectively intercepts dust, impurities, and other particulate matter in the air, purifying the air entering the fan. This not only maintains a clean internal environment for the fan, reducing wear and tear on internal components and extending the fan's lifespan, but also improves the quality of the air blown out by the fan, meeting the needs of applications requiring high air cleanliness.

[0015] 3. In this invention, the dust filter is fixedly installed on the mounting frame using fixing bolts. This design makes the installation and removal of the dust filter very convenient. After the dust filter has been used for a period of time, a large amount of dust will accumulate on its surface, affecting the filtration effect. At this time, simply unscrew the fixing bolts to easily remove the dust filter from the mounting frame for cleaning or replacement. After cleaning, it can be reinstalled in its original position using the fixing bolts. The operation is simple and quick, greatly improving maintenance efficiency.

[0016] 4. In this invention, a check valve is installed on the exhaust pipe of the centrifugal fan casing. When the blower assembly is operating normally, the check valve opens under the action of airflow to ensure smooth exhaust. When the blower assembly stops operating, the check valve automatically seals the exhaust pipe, effectively preventing water vapor and other impurities from flowing back into the fan through the exhaust pipe. This design effectively protects the internal components of the fan, preventing corrosion, short circuits, and other problems caused by water vapor backflow, thus improving the reliability and stability of the fan.

[0017] 5. In this invention, by opening mounting holes on the fan impeller and setting mounting bolts on the side of the impeller mounting base, the fan impeller can be easily installed simply by aligning the mounting holes on the fan impeller with the mounting bolts on the side of the impeller mounting base. This installation method is simple and easy to implement, requiring no complicated tools or operating procedures, greatly shortening the installation time and improving installation efficiency. It also facilitates subsequent disassembly, maintenance, or replacement of the fan impeller. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0020] Figure 3 This is an exploded structural diagram of the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0021] Figure 4 This is a schematic diagram of the centrifugal fan housing in the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the blower assembly in the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0023] Figure 6 This is a schematic diagram of the fan motor in the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0024] Figure 7 This is a schematic diagram of the fan impeller in the waterproof and dustproof centrifugal cooling fan assembly of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the dust filter in the waterproof and dustproof centrifugal cooling fan assembly of the present invention.

[0026] In the picture:

[0027] 1. Centrifugal fan casing; 2. Blower assembly; 3. Filter assembly;

[0028] 101. Exhaust pipe; 1011. Check valve;

[0029] 201. Fan motor; 2011. Fan impeller;

[0030] 202. Impeller mounting base; 2021. Mounting bolt; 2022. Mounting hole;

[0031] 301, Mounting frame; 3011, Dust filter;

[0032] 302, fixing bolt; 3021, fixing hole; 303, sealing ring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-8 A waterproof and dustproof centrifugal cooling fan assembly consists of a centrifugal fan housing 1, an exhaust pipe 101 and a check valve 1011 thereon, a blower assembly 2, and a filter assembly 3.

[0035] To achieve efficient exhaust and prevent water vapor backflow, in this embodiment, an exhaust pipe 101 is installed on the air outlet of the centrifugal fan housing 1, and a check valve 1011 is installed on the exhaust pipe 101. When the blower assembly 2 is operating normally, the check valve 1011 opens under the action of airflow to ensure smooth exhaust; when the blower assembly 2 stops operating, the check valve 1011 can automatically block the exhaust pipe 101, effectively preventing water vapor and other impurities from flowing back into the centrifugal fan housing 1, preventing internal components from being damaged by water vapor corrosion, and improving the reliability and service life of the fan assembly.

[0036] To generate and transport airflow, in this embodiment, a blower assembly 2 is installed on the side of the centrifugal fan casing 1. The blower assembly 2 includes a fan motor 201 mounted on the side of the centrifugal fan casing 1. A fan impeller 2011, matching the centrifugal fan casing 1, is detachably mounted on the output shaft of the fan motor 201. When the fan motor 201 operates, it drives the fan impeller 2011 to rotate, thereby generating airflow and achieving air circulation and heat dissipation. The detachable fan impeller 2011 design facilitates replacement when the impeller is damaged or requires maintenance, reducing maintenance costs.

[0037] To facilitate the installation and fixation of the fan impeller 2011, in this embodiment, an impeller mounting base 202 for mounting the fan impeller 2011 is installed on the output shaft of the fan motor 201. The impeller mounting base 202 provides a stable mounting platform for the fan impeller 2011, ensuring that the fan impeller 2011 remains stable during rotation, reducing vibration and noise, and improving the smooth operation of the fan assembly.

[0038] To further simplify the installation process of the fan impeller 2011, in this embodiment: mounting bolts 2021 are fixedly connected to the side of the impeller mounting base 202, and mounting holes 2022 matching the mounting bolts 2021 are provided on the fan impeller 2011. During installation, simply align the mounting holes 2022 on the fan impeller 2011 with the mounting bolts 2021 on the side of the impeller mounting base 202 and fasten them in to complete the initial positioning of the fan impeller 2011. The operation is simple and quick, greatly shortening the installation time and improving production efficiency.

[0039] To filter the air entering the centrifugal fan housing 1, in this embodiment, a filter assembly 3 is installed on the centrifugal fan housing 1 at the position corresponding to the air inlet of the centrifugal fan housing 1. The filter assembly 3 includes a mounting frame 301, which is fixedly installed at the air inlet position of the centrifugal fan housing 1. A dust filter 3011 is detachably installed inside the mounting frame 301. The dust filter 3011 can effectively intercept dust, impurities, and other particulate matter in the air, preventing them from entering the centrifugal fan housing 1, maintaining a clean internal environment, reducing wear and tear on internal fan components caused by dust, and extending the service life of the fan assembly. The detachable design facilitates regular cleaning or replacement of the dust filter 3011, ensuring the filtration effect.

[0040] To ensure the stable fixation of the dust filter 3011, in this embodiment, both sides of the mounting frame 301 are threaded with fixing bolts 302 for fixing the dust filter 3011, and both sides of the dust filter 3011 are provided with fixing holes 3021 that match the fixing bolts 302. Through the cooperation of the fixing bolts 302 and the fixing holes 3021, the dust filter 3011 can be firmly fixed in the mounting frame 301, preventing the dust filter 3011 from shaking or falling off during fan operation, thus ensuring the stability and reliability of the filter assembly 3.

[0041] To enhance the seal between the dust filter 3011 and the mounting frame 301, in this embodiment, a sealing ring 303 is installed on the side of the centrifugal fan housing 1 at a position corresponding to the mounting frame 301, which is in a sealing connection with the dust filter 3011. The sealing ring 303 can effectively fill the gap between the dust filter 3011 and the mounting frame 301, preventing unfiltered air from directly entering the centrifugal fan housing 1 through the gap, further improving the filtration effect and ensuring the cleanliness of the air entering the fan assembly.

[0042] When using:

[0043] The fan motor 201 starts, driving the fan impeller 2011 to rotate and generate airflow. Air enters through the air inlet of the centrifugal fan casing 1, and first passes through the dust filter 3011 in the filter assembly 3 for filtration. Dust and impurities are trapped outside the dust filter 3011, and clean air enters the centrifugal fan casing 1. Subsequently, the air is accelerated by the fan impeller 2011 and discharged from the exhaust pipe 101 at the air outlet, achieving the heat dissipation function.

[0044] When the fan motor 201 stops running, the check valve 1011 on the exhaust pipe 101 automatically closes to prevent water vapor and other impurities from flowing back into the centrifugal fan casing 1 through the exhaust pipe 101. Simultaneously, the dust filter 3011 is fixed inside the mounting frame 301 by fixing bolts 302, and a sealing ring 303 seals the filter with the mounting frame 301, ensuring the stability and reliability of the filtration effect. The fan impeller 2011 engages with the mounting bolts 2021 on the impeller mounting base 202 through the mounting hole 2022, enabling convenient installation and stable operation.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof and dustproof centrifugal cooling fan assembly, comprising a centrifugal fan housing (1), characterized in that: An exhaust pipe (101) is installed on the air outlet of the centrifugal fan housing (1), and a check valve (1011) for preventing water vapor backflow is installed on the exhaust pipe (101). A blower assembly (2) is installed on the side of the centrifugal fan housing (1), and a filter assembly (3) is installed on the centrifugal fan housing (1) at the position corresponding to the air inlet of the centrifugal fan housing (1).

2. The waterproof and dustproof centrifugal cooling fan assembly according to claim 1, characterized in that: The blower assembly (2) includes a blower motor (201) installed on the side of the centrifugal fan housing (1), and a blower impeller (2011) that matches the centrifugal fan housing (1) is detachably installed on the output shaft of the blower motor (201).

3. The waterproof and dustproof centrifugal cooling fan assembly according to claim 2, characterized in that: The output shaft of the fan motor (201) is equipped with an impeller mounting base (202) for mounting the fan impeller (2011).

4. The waterproof and dustproof centrifugal cooling fan assembly according to claim 3, characterized in that: The side of the impeller mounting base (202) is fixedly connected with mounting bolts (2021), and the fan impeller (2011) is provided with mounting holes (2022) that match the mounting bolts (2021).

5. The waterproof and dustproof centrifugal cooling fan assembly according to claim 1, characterized in that: The filter assembly (3) includes a mounting frame (301), which is fixedly installed at the air inlet position of the centrifugal fan housing (1). A dust filter (3011) is detachably installed inside the mounting frame (301).

6. The waterproof and dustproof centrifugal cooling fan assembly according to claim 5, characterized in that: Both sides of the mounting frame (301) are threaded with fixing bolts (302) for fixing the dust filter (3011), and both sides of the dust filter (3011) are provided with fixing holes (3021) that match the fixing bolts (302).

7. The waterproof and dustproof centrifugal cooling fan assembly according to claim 6, characterized in that: A sealing ring (303) that is sealed to the dust filter (3011) is installed on the side of the centrifugal fan housing (1) at a position corresponding to the mounting frame (301).

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