Protective screen structure for a blower

Abstract

The utility model provides a kind of protective screen structure of air blower, it is used to cover the air inlet of a air blower, it includes a shaft center part, recesses towards inside surface;A frame part, surrounds the periphery of shaft center part;And by the sequence setting of shaft center part to frame part, one inner flow area, by multiple equidistance and axial extension first air guide fins, one vortex area, by multiple equidistance and arc bending extension second air guide fins and one confluence area, by multiple equidistance and radial extension third air guide fins, first support ring rib is arranged between inner flow area and vortex area, and second support ring rib is arranged between vortex area and confluence area, and each first, second and third air guide fin is slightly radial arrangement of convergence to shaft center, to expand the angle and area of import gas, increase air intake and speed, to improve exhaust efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of blowers, specifically a protective mesh structure for blowers that can improve air guiding efficiency. Background Technology

[0002] Blowers are widely used in various places that require air exchange or exhaust gas, such as kitchens or above cooking stoves, for the rapid discharge of exhaust gas. A typical blower includes an outer casing and a motor assembly. The outer casing has at least one vortex channel inside for housing at least one impeller of the motor assembly. Each vortex channel has an air inlet on one side wall of the outer casing and an exhaust port on the outer periphery for connecting to a duct. Thus, the impeller of the motor assembly rotates at high speed within the vortex channel of the outer casing, allowing gas to be drawn in through the air inlet, compressed by the impeller and vortex channel, and discharged through the exhaust port.

[0003] To prevent foreign objects from entering the blower's casing and damaging internal components such as the impeller, or even causing accidental injury, a protective mesh is typically installed on each air inlet of the casing. This mesh is generally composed of interwoven planar mesh to prevent foreign objects from entering. However, if the mesh density is too high, it will affect the airflow and velocity; conversely, if the mesh density is too low, it will affect its protective effect. In other words, existing blower protective meshes are not perfect in use, resulting in a failure to simultaneously provide protection and improve airflow and velocity. How to solve these problems is a pressing issue for the industry and users, and it is also the subject that this invention aims to address.

[0004] Due to the aforementioned shortcomings and needs, the applicant of this utility model, based on its many years of experience in related technologies and product design and manufacturing, has researched and developed a utility model to address the above-mentioned deficiencies and needs, and actively sought solutions. Through continuous research and trial production, it has finally successfully developed a protective mesh cover structure for blowers, thereby overcoming the functional deficiencies of existing blower protective mesh covers. Utility Model Content

[0005] The main purpose of this utility model is to provide a protective mesh structure for a blower, which can provide effective protection by utilizing the design of its radially arranged air guide plates, thereby preventing foreign objects from entering and greatly improving the safety of its use.

[0006] The secondary objective of this utility model is to provide a protective mesh structure for a blower, which can effectively expand the angle and area of ​​the introduced gas by designing the shape and angle of the radially arranged air guide plates in different areas, thereby increasing the overall air volume and speed of the introduced gas and greatly improving its air guiding efficiency.

[0007] Therefore, this utility model mainly achieves the above-mentioned objectives and effects through the following technical means, including:

[0008] An outer casing has at least one vortex channel inside. At least one side of the two side walls of the outer casing has an air inlet communicating with the vortex channel and at least one upward-opening air outlet communicating with the vortex channel. The air outlet is connected to the vortex channel, and the air inlet is connected to the air outlet via the opposite vortex channel.

[0009] A motor assembly, mounted within the housing, includes at least one impeller disposed within the vortex channel; and

[0010] At least one protective mesh cover is installed on the air inlet, the protective mesh cover having an inner side and an opposing outer side, the protective mesh cover comprising:

[0011] A central portion is recessed towards the inner side surface;

[0012] An outer frame surrounds the periphery of the central axis.

[0013] And the following are arranged sequentially from the central axis to the outer frame:

[0014] An internal flow zone is composed of a plurality of equidistant and axially extending first air guide plates;

[0015] A vortex region is composed of a plurality of equally spaced and arc-shaped second air guide plates;

[0016] A confluence region is composed of a plurality of equally spaced and radially extending third air guide plates.

[0017] The inner flow zone and the vortex zone are provided with a first support ring rib, and the vortex zone and the confluence zone are provided with a second support ring rib. The first, second and third air guide plates are arranged in a radial pattern that converges slightly towards the axis.

[0018] Through the specific implementation of the aforementioned technical means, the protective mesh structure of the blower of this utility model can utilize the radial third air guide plate design in the confluence area of ​​the protective mesh to allow the surrounding gas to be introduced at a large angle and over a wide range. The arc-shaped second air guide plate design in the vortex area allows the airflow to be concentrated and guided. Finally, the axial third air guide plate in the inner flow area can accelerate the airflow. Through the radial design of the air guide plates in different areas and the angle design, the angle and area of ​​the introduced gas can be effectively expanded, thereby increasing the overall air volume and speed of the introduced gas, greatly improving its air guiding efficiency, while providing effective protection to prevent foreign objects from entering, greatly improving its safety in use, greatly enhancing its practicality, and further improving its added value and economic benefits.

[0019] Furthermore, this utility model utilizes the following technical means to further achieve the aforementioned objectives and effects; such as:

[0020] The central part of the shaft is provided with a pyramid that protrudes outward and converges towards the center.

[0021] The confluence area and the inflow area are not on the same plane, and the inflow area is recessed on the inner side.

[0022] The outer frame is provided with a plurality of support fasteners around its perimeter, and the air inlet is provided with a plurality of snap fasteners. By engaging the support fasteners with the snap fasteners, the protective mesh can be selectively installed on the air inlet.

[0023] The protective mesh cover and the wall of the outer casing form a ventilation gap, allowing external gas to enter the outer casing through the ventilation gap.

[0024] To further understand the structure, features and other objectives of this utility model, several preferred embodiments are described below in detail with reference to the accompanying drawings, so that those skilled in the art can implement them. Attached Figure Description

[0025] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A three-dimensional appearance diagram for applying this utility model.

[0027] Figure 2The exploded perspective view of this utility model is provided to illustrate the structure and relative relationship between the protective mesh cover and the outer shell.

[0028] Figure 3 This is a front view schematic diagram of the present invention, used to illustrate the appearance of the protective mesh cover.

[0029] Figure 4 This is a side view of the present invention, used to illustrate the appearance of the protective netting from another perspective.

[0030] Figure 5 This is a side cross-sectional view of the present invention assembled in the outer shell.

[0031] Wherein, 10: outer casing; 11: vortex channel; 12: air inlet; 3: air outlet; 15: buckle; 20: motor assembly; 50: protective mesh cover; 501: inner side; 502: outer side

[0032] ; 51: Axial core; 510: Pyramid; 52: Outer frame; 53: Inner flow zone; 530: First air guide plate; 54: First support ring rib; 55: Vortex zone; 550: Second air guide plate; 56: Second support ring rib; 57: Convergence zone; 570: Third air guide plate; 58: Support fastener; 59: Ventilation gap. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] The accompanying drawings illustrate specific embodiments of the present invention and its components. All references to front and back, left and right, top and bottom, upper and lower, and horizontal and vertical are for ease of description only and are not intended to limit the present invention or restrict its components to any position or spatial orientation. The dimensions specified in the drawings and specification may be varied according to the design and requirements of specific embodiments of the present invention without departing from the scope of the patent application, and are therefore not limited to this structure in the patent application.

[0035] Regarding the structure of the protective mesh cover for the blower of this utility model, it is as follows: Figure 1 , Figure 2As shown, the blower includes at least a housing (10) and a motor assembly (20) installed inside the housing (10). The housing (10) has two generally parallel and coaxially symmetrical vortex channels (11). Each vortex channel (11) has an air inlet (12) formed on each side wall of the housing (10), and an upward-opening exhaust port (13) formed on the outer periphery of the outer contour of the housing (10). The exhaust port (13) connects the two vortex channels (11). It is also provided with a connecting duct (not shown in the figure), and the motor assembly (20) has impellers (not shown in the figure) at both ends located inside the vortex channel (11) of the outer casing (10), so that when the impeller rotates at high speed, it can draw in air from each of the air inlets (12) on both sides of the outer casing (10), and discharge it outward through the exhaust port (13) after passing through the vortex channel (11) on both sides. Furthermore, each of the air inlets (12) of the outer casing (10) is provided with a protective mesh cover (50) to prevent foreign objects from entering the interior of the outer casing (10).

[0036] The feature of this utility model is as follows: Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the protective mesh cover (50) has an inner side (501) corresponding to the outer shell cover (10) and an outer side (502) corresponding to the outer surface. The protective mesh cover (50) has a central portion (51) recessed into the inner side (501) and an outer frame portion (52). From the central portion (51) to the outer frame portion (52), the protective mesh cover (50) has an inner flow area (53), a vortex area (55), and a confluence area (57) in sequence from the inside to the outside. A first support ring rib (54) is provided between adjacent inner flow areas (53) and vortex areas (55), and a second support ring rib (56) is provided between adjacent vortex areas (55) and confluence areas (57). The region (57) and the inner flow region (53) are not on the same plane, and the inner flow region (53) is recessed towards the inner side surface (501). The axial part (51) has a pyramidal body (510) that protrudes towards the outer side surface (502) and converges towards the center. This pyramidal body guides the central gas from the outer side surface (502) through the inner flow region (53) into the inner side surface (501). The inner flow region (53) is composed of a plurality of equidistant and axially extending first air guide plates (530). Each first air guide plate (530) is arranged in a radial pattern that converges slightly towards the axis. The two ends of each first air guide plate (530) are respectively connected to the outer edge of the axial part (51) and the second branch. The inner edge of the support ring rib (56) and the vortex region (55) are composed of a plurality of equally spaced and arc-shaped second air guide plates (550). Each of the second air guide plates (550) has a radial arrangement that slightly converges towards the axis. Each of the second air guide plates (550) is connected at both ends to the outer edge of the first support ring rib (54) and the inner edge of the second support ring rib (56), so that the vortex region (55) can connect the inner flow region (53) and the confluence region (57). The confluence region (57) is composed of a plurality of equally spaced and radially extended third air guide plates (570). Each of the third air guide plates (570) has a radial arrangement that slightly converges towards the axis. Each of the third air guide plates (570) is connected at both ends to the inner edge of the outer frame (52) and the outer edge of the second support ring rib (56). Furthermore, the outer frame (52) has a plurality of equidistant support fasteners (58) around its periphery, and the air inlet (12) has a plurality of snap-fit ​​portions (15) corresponding to each of the support fasteners (58), so that the protective net cover (50) can be selectively fastened to the air inlet (12) of the outer shell cover (10), and a ventilation gap (59) is formed between the outer frame (52) of the protective net cover (50) and the wall of the outer shell cover (10), so that gas can enter through the ventilation gap (59) between the protective net cover (50) and the outer shell cover (10).

[0037] In practical applications, this utility model, such as Figure 2 and Figure 5When the impeller of the blower motor assembly (20) rotates at high speed, it can effectively agitate the airflow, causing the gas to flow from the outer side (502) of the protective mesh cover (50) to the inner side (501). Then, through the radial design of the third air guide plates (570) in the confluence area (57) of the protective mesh cover (50), the surrounding gas is introduced at a large angle and over a wide range. The arc-shaped design of the second air guide plates (550) in the vortex area (55) allows the airflow to be concentrated and guided. Finally, the axial design of the third air guide plates (570) in the inner flow area (53) can accelerate the airflow. Through the radial design of the air guide plates in different areas, the angle and area of ​​the introduced gas can be effectively expanded, thereby increasing the overall airflow and speed, greatly improving its air guiding efficiency, while providing effective protection to prevent foreign objects from entering, greatly improving its safety and practicality.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective mesh cover structure for a blower, characterized in that, It includes: An outer casing has at least one vortex channel inside. At least one side of the two side walls of the outer casing has an air inlet communicating with the vortex channel and at least one upward-opening air outlet communicating with the vortex channel. The air outlet is connected to the vortex channel, and the air inlet is connected to the air outlet via the opposite vortex channel. A motor assembly is installed inside the housing and includes at least one impeller disposed within the vortex channel; as well as At least one protective mesh cover is installed on the air inlet, the protective mesh cover having an inner side and an opposing outer side, the protective mesh cover comprising: A central section is recessed towards the inner side surface; An outer frame surrounds the periphery of the central axis. And the following are arranged sequentially from the central axis to the outer frame: An internal flow zone is composed of a plurality of equidistant and axially extending first air guide plates; A vortex region is composed of a plurality of equally spaced and arc-shaped second air guide plates; A confluence region is composed of a plurality of equally spaced and radially extending third air guide plates. The inner flow zone and the vortex zone are provided with a first support ring rib, and the vortex zone and the confluence zone are provided with a second support ring rib. The first, second and third air guide plates are arranged in a radial pattern that converges slightly towards the axis.

2. The protective mesh cover structure for the blower according to claim 1, characterized in that, The central part is provided with a pyramid that protrudes outward and converges towards the center.

3. The protective mesh cover structure for the blower according to claim 1, characterized in that, The confluence area and the inflow area are not on the same plane, and the inflow area is recessed on the inner side.

4. The protective mesh cover structure for the blower according to claim 1, characterized in that, The outer frame is provided with a plurality of support fasteners around its perimeter, and the air inlet is provided with a plurality of snap fasteners. By engaging the support fasteners with the snap fasteners, the protective mesh can be selectively installed on the air inlet.

5. The protective mesh cover structure for the blower according to claim 1 or 4, characterized in that, A ventilation gap is formed between the protective mesh and the wall of the outer casing, allowing external gas to enter the outer casing through the ventilation gap.

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