High-energy-efficiency exhaust fan convenient to install

Abstract

The high-energy-efficiency exhaust fan convenient to install comprises a motor, fan blades and an air duct, the fan blades comprise blades and an air guide ring, all the blades are connected into a whole through the air guide ring, a motor groove is formed in the air guide ring, and the motor groove and a rotor of the motor are connected through a rotating shaft and keep synchronous rotation; the air duct comprises a first air duct shell and a second air duct shell, the first air duct shell and the second air duct shell are assembled to form the complete air duct, the first air duct shell and the second air duct shell are provided with first bolt holes which correspond to each other and are detachably connected through mounting bolts, and the second air duct shell is further provided with second bolt holes which are detachably connected through mounting bolts. And the second air duct shell is detachably connected with the mounting structure through mounting bolts. The exhaust efficiency of the exhaust fan can be improved, the indoor and outdoor air circulation and exchange effect is better, meanwhile, the installation bolt connection mode is adopted, installation and disassembly are convenient and fast, and therefore maintenance can be carried out rapidly.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a high-efficiency and easy-to-install exhaust fan. Background Technology

[0002] Exhaust fans, also known as ventilation fans or exhaust fans, use a motor to drive the fan blades to rotate and create airflow, exchanging indoor and outdoor air. They can be used to remove stale indoor air and regulate temperature and humidity, and are widely used in homes, public places, and production sites. Traditional exhaust fans do not have ducts, or the ducts are installed separately, resulting in low ventilation efficiency and inconvenient installation due to site conditions, requiring further improvement. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of the aforementioned background technology by providing an exhaust fan that features a duct configuration, high exhaust efficiency, and convenient installation.

[0004] To achieve the above objectives, this utility model provides a high-efficiency and easy-to-install exhaust fan, including a motor, fan blades, and an air duct. The fan blades include blades and a guide ring, which connects all the blades into one piece. The guide ring forms a motor slot, and the motor slot is connected to the rotor of the motor through a rotating shaft and maintains synchronous rotation.

[0005] The air duct comprises a first air duct shell and a second air duct shell. The first air duct shell and the second air duct shell are assembled to form a complete air duct. The air duct includes a circular section and a straight section. The straight section is tangentially connected to the circular section. The circular section surrounds the outside of the fan blade. The first air duct shell is provided with an opening corresponding to the fan blade. The second air duct shell is a complete assembly.

[0006] Both the first and second air duct housings are provided with corresponding first bolt holes, which can be detachably connected by mounting bolts. The second air duct housing is also provided with second bolt holes, which can be detachably connected to the mounting structure by mounting bolts.

[0007] Furthermore, the second air duct housing is also provided with a bearing mounting groove, in which a bearing is provided for supporting the rotating shaft.

[0008] Furthermore, L-shaped grooves are provided at the contact positions of the first air duct shell and the second air duct shell.

[0009] Furthermore, a filter screen is provided at the end of the straight segment, which is used to filter the air.

[0010] Furthermore, it also includes an extended air duct, which is connected to the end of the straight segment to extend or bend the air duct.

[0011] The above-mentioned solution of this utility model has the following beneficial effects:

[0012] This utility model provides a high-efficiency and easy-to-install exhaust fan. Through the air duct formed by the first and second air duct housings and the corresponding installation method, the exhaust fan's exhaust efficiency is improved, resulting in better indoor and outdoor air circulation and exchange. Furthermore, the use of mounting bolts facilitates easy installation and disassembly, allowing for quick maintenance.

[0013] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 Another schematic diagram of the overall structure of this utility model (second air duct housing disassembled);

[0016] Figure 3 This is a schematic diagram of the fan blade of this utility model;

[0017] Figure 4 This is a schematic diagram of the L-shaped groove of this utility model.

[0018] [Explanation of Labels in the Attached Image]

[0019] 1-Fan blade; 2-Air duct; 3-Circuit board; 4-Stator; 5-Rotor; 6-Blade; 7-Air guide ring; 8-Motor slot; 9-First air duct housing; 10-Second air duct housing; 11-First bolt hole; 12-Second bolt hole; 13-Bearing; 14-Rotating shaft; 15-L-shaped slot. Detailed Implementation

[0020] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1-3 As shown, this embodiment of the present invention provides a high-efficiency and easy-to-install exhaust fan, including a motor, fan blades 1, and air duct 2. The motor includes a circuit board 3, a stator 4, and a rotor 5. The illustrated motor uses an outer rotor 5 design, where the stator 4 is located in the inner layer and the rotor 5 in the outer layer. The circuit board 3 is connected to the stator 4 to energize the stator 4, thereby driving the rotor 5 to rotate. In this embodiment, the fan blades 1 adopt an integral structure, including blades 6 and a guide ring 7. The guide ring 7 is located at the upper and lower edges of the blades 6, connecting all the blades 6 into one unit. The lower edge of the guide ring 7 also forms a motor slot 8, which is used for motor mounting. The motor slot 8 and the rotor 5 are connected via a rotating shaft 14 and maintain synchronous rotation (the rotating shaft 14 and the rotor 5 are interference-fitted).

[0024] The air duct 2 is located outside the fan blade 1 to guide airflow, thereby increasing the exhaust efficiency of the exhaust fan under certain installation conditions. The air duct 2 is composed of a symmetrical first air duct shell 9 and a second air duct shell 10, both of which are halves of the air duct 2. These two shells are symmetrically assembled to form the complete air duct 2. In this embodiment, the air duct 2 includes a circular segment and a straight segment, with the straight segment tangentially connected to the circular segment. The circular segment surrounds the outside of the fan blade 1. When installing the exhaust fan, the end of the straight segment is typically used as the air inlet, and the front of the exhaust fan is used as the exhaust outlet. The air inlet and exhaust outlet are located in different spaces (e.g., indoors and outdoors).

[0025] The first duct housing 9 has an opening corresponding to the fan blades, allowing air to be exhausted at the opening when the fan blades rotate. The second duct housing 10 is a complete unit and can serve as the back of the entire exhaust fan for wall mounting, etc.

[0026] In this embodiment, both the first air duct housing 9 and the second air duct housing 10 are provided with corresponding first bolt holes 11, allowing for detachable connection between the two housings via mounting bolts. Simultaneously, the second air duct housing 10 is also provided with second bolt holes 12, enabling connection to the mounting structure (which also has bolt holes) via mounting bolts. The second air duct housing 10 is fixedly connected to the circuit board 3 and the stator 4. Furthermore, the second air duct housing 10 is provided with a bearing mounting groove, within which a bearing 13 is installed. The bearing 13 supports the rotating shaft 14, resulting in smoother operation and lower noise during exhaust fan operation.

[0027] It is understandable that the solution provided in this embodiment, through the arrangement of two duct housings, allows the motor, fan blades 1, etc., to be in a relatively sealed environment, thus providing better protection and improving the protection level. This better prevents external impurities from entering the exhaust fan and causing malfunctions or reduced service life, improving ventilation efficiency while ensuring reliability. Of course, if the overall size of the exhaust fan is not large, i.e., the size and weight of the first duct housing 9 and the second duct housing 10 are not large, a quick-release structure such as a snap-fit ​​can also be considered to connect the first duct housing 9 and the second duct housing 10. When simple maintenance is required inside the exhaust fan, only the first duct housing 9 can be disassembled, without disassembling the entire exhaust fan, further improving convenience.

[0028] At the same time, such as Figure 4 As shown in the preferred embodiment, L-shaped grooves 15 are provided at the contact positions of the first air duct housing 9 and the second air duct housing 10. The L-shaped grooves 15 make the connection between the two more stable and easier to install. It should be noted that the L-shaped grooves 15 are sufficient for the air duct to provide adequate sealing, so there is no need to further provide sealing rings or the like.

[0029] As a preferred embodiment, a filter screen can be further installed at the end of the straight section, i.e., the air inlet, to filter the exhaust air from the exhaust fan, thereby reducing the content of dust, particles, etc. in the exhaust air. This is especially important when the air inlet is located outdoors and the exhaust outlet is located indoors, to ensure that the air entering the room contains less dust.

[0030] In a preferred embodiment, an extended air duct can be further provided. By connecting the extended air duct to the end of the straight section, the air duct 2 can be extended or bent to ensure that the air duct 2 can be smoothly arranged between indoors and outdoors. The air ducts 2 can be connected by flanges or other similar connection methods, which will not be described in detail here.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A high-efficiency and easy-to-install exhaust fan, characterized in that, It includes a motor, fan blades and air duct. The fan blades include blades and air guide rings. The air guide rings connect all the blades into one piece. The air guide rings form a motor slot. The motor slots are connected to the rotor of the motor through a rotating shaft and maintain synchronous rotation. The air duct comprises a first air duct shell and a second air duct shell. The first air duct shell and the second air duct shell are assembled to form a complete air duct. The air duct includes a circular segment and a straight segment. The straight segment is tangentially connected to the circular segment. The circular segment surrounds the outside of the fan blade. The first air duct shell is provided with an opening corresponding to the fan blade. The second air duct shell is a complete assembly. Both the first and second air duct housings are provided with corresponding first bolt holes, which can be detachably connected by mounting bolts. The second air duct housing is also provided with second bolt holes, which can be detachably connected to the mounting structure by mounting bolts.

2. The high-efficiency and easy-to-install exhaust fan according to claim 1, characterized in that, The second air duct housing is also provided with a bearing mounting groove, in which a bearing is installed for supporting the rotating shaft.

3. The high-efficiency and easy-to-install exhaust fan according to claim 1, characterized in that, The contact points between the first air duct housing and the second air duct housing are both provided with L-shaped grooves.

4. The high-efficiency and easy-to-install exhaust fan according to claim 1, characterized in that, A filter screen is also provided at the end of the straight segment, and the filter screen is used to filter the air.

5. The high-efficiency and easy-to-install exhaust fan according to claim 1, characterized in that, It also includes an extended air duct, which is connected to the end of the straight segment to extend or bend the air duct.

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