Handheld fan with air gathering ring

Abstract

The utility model discloses a handheld fan with an air gathering ring, which comprises a fan head with a handle, a motor and fan blades are arranged in the fan head, and the fan blades are driven by the motor and blow airflow towards an air outlet of the fan head. The air gathering ring is detachably mounted in the assembling opening of the fan head; and the flow guide grid pieces are arranged at the air outlet of the fan head, and air flow is guided to the position of the air gathering ring through the flow guide grid pieces to be gathered and then exhausted. The flow guide grid pieces and the embedded wind gathering ring cooperate to form a flow guide closing-in structure, continuous guiding and effective compression of airflow are achieved, and the wind speed output and wind gathering efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to a fan, specifically a handheld fan with a concentrator ring. Background Technology

[0002] Handheld fans, as portable cooling devices, are widely used in daily outings and outdoor activities during the summer, and are favored by users for their small size, light weight, and ease of operation. To improve the user experience, various handheld fan designs with different airflow modes have emerged on the market. One common technological improvement is to use a "wind-gathering" structure to guide and compress the airflow, thereby increasing wind speed and airflow intensity.

[0003] In existing technologies, common air-gathering structures are mostly integrated designs, where the air-gathering channel or outlet is integrally molded with the fan housing, or a single injection-molded conical outlet is used to concentrate airflow. However, these structures have the following drawbacks: First, the air-gathering structure and fan head are fixed designs, lacking flexibility, and users cannot freely choose whether to install an air-gathering outlet according to their needs; second, there are usually no good connecting transition parts between the airflow guiding mechanism and the air-gathering structure, which easily leads to airflow turbulence when passing through, making it impossible to achieve a stable and efficient airflow guiding effect, and limiting the air-gathering performance.

[0004] Especially in terms of airflow guidance, some existing products only have simple grilles or baffles at the air outlet, without effectively guiding the airflow, resulting in uneven airflow output and affecting the user experience. Due to the lack of a coordinated airflow guiding structure between the airflow guide grille and the air-gathering ring, the overall air-gathering effect is difficult to optimize.

[0005] Therefore, there is an urgent need to provide a handheld fan design that is simple in structure, easy to install, and has a high efficiency in concentrating airflow, in order to improve the problems of poor airflow connection, turbulent airflow, and unsatisfactory airflow concentration performance in the existing technology. Summary of the Invention

[0006] To address the aforementioned problems, this utility model provides a handheld fan with an air-concentrating ring, employing an embedded air-concentrating ring structure, which effectively overcomes the shortcomings of the prior art.

[0007] This utility model is achieved through the following technical solution: a handheld fan with a concentrating ring, comprising:

[0008] A fan head with a handle, wherein a motor and fan blades are installed inside the fan head, and the fan blades are driven by the motor to blow airflow toward the air outlet of the fan head;

[0009] The air-gathering ring is detachably installed in the mounting port of the fan head;

[0010] One or more airflow guide grids are set at the air outlet of the fan head. The airflow is guided by the airflow guide grids to the position of the air-gathering ring, where it is gathered and then discharged.

[0011] As a preferred technical solution, each of the flow guide grids is provided with an arc-shaped flow guide surface, and the thickness of the flow guide grid on the side facing the fan blade is less than the thickness of the other side.

[0012] As a preferred technical solution, the airflow guide grid has a protruding connecting part that extends into the position of the airflow gathering ring and connects with the airflow gathering ring.

[0013] As a preferred technical solution, the wind-gathering ring has an arc-shaped converging surface on one side of each guide grid plate, and the airflow is guided by the arc-shaped converging surface and then discharged.

[0014] As a preferred technical solution, the side of the connecting part that contacts the arc-shaped closing surface is an arc-shaped fitting surface, and the two have the same curvature.

[0015] As a preferred technical solution, the air-gathering ring is tightly connected to the fan head.

[0016] The beneficial effects of this utility model are as follows: First, in this utility model, the wind-gathering ring is an independent component. By embedding the protruding connecting part of the guide grid plate, it forms a close connection with it, forming a complete and continuous guide and closing structure. This structure not only ensures the continuity of airflow guidance, but also effectively compresses the airflow cross section, realizes wind gathering and acceleration, and significantly improves the wind speed output effect.

[0017] 2. The airflow guide grid of this utility model is provided with an arc-shaped airflow guide surface and a connecting part extending from the end, which fits with the arc-shaped closing surface of the air-gathering ring. This allows the airflow to transition along the airflow guide surface into the air-gathering ring after passing through the fan head, avoiding the sudden change or turbulence of airflow in the traditional air outlet structure. The output airflow is more concentrated and smooth, improving the user experience.

[0018] Third, the common integrated air-gathering outlet structure on the market lacks an effective connection between air guidance and air gathering, and the air speed output is not concentrated. This utility model, through the split design of "air guide grid plate + embedded air gathering ring", not only enhances the airflow guidance capability, but also facilitates later replacement, maintenance and functional expansion.

[0019] Fourth, through the structural synergy of the air-gathering ring and the air-guiding grid, not only is the concentration and speed of the air output improved, but also a longer distance air delivery effect is achieved under the unit power consumption, thereby improving the overall efficiency of the fan. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0024] Figure 4 This utility model Figure 3 A magnified view of a portion of point A in the middle;

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

[0026] 1. Fan head; 2. Handle; 7. Fan blades; 3. Air outlet; 6. Assembly port; 4. Condensing ring; 5. Air guide grid; 52. Arc-shaped air guide surface; 51. Connecting part; 41. Arc-shaped closing surface. Detailed Implementation

[0027] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0028] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0029] like Figures 1-4 As shown, this utility model discloses a handheld fan with a concentrating ring 4, comprising a fan head 1, a concentrating ring 4, and airflow guide grids 5, among other components. The fan head 1 is a shell structure, with a handle 2 at the lower end for easy handheld use. The handle 2 can house a battery compartment, circuit board, and other power and control components. A motor is installed inside the fan head 1, fixedly mounted on the central axis of the fan head 1 shell. Its output shaft is connected to several fan blades 7 for driving airflow.

[0030] When the motor is working, it drives the fan blades 7 to rotate at high speed, generating airflow. This airflow flows from inside the fan head 1 towards the air outlet 3. The air outlet 3 is located at the front end of the fan head 1 and has a semi-circular or annular opening structure. One or more guide grids 5 are installed at the air outlet 3 to guide the airflow generated by the fan blades 7.

[0031] The airflow guide grid 5 is a hollow grid-like structure installed on the inner wall of the air outlet 3 of the fan head 1. Each airflow guide grid 5 has an arc-shaped airflow guide surface 52 in its central part. The side of the arc-shaped airflow guide surface 52 facing the fan blade 7 has a relatively small thickness, while the side facing away from the fan blade 7 has a larger thickness, thus forming a certain arc angle, which is conducive to guiding the airflow to flow in a specific direction. After multiple airflow guide grids 5 are distributed and arranged, a uniform airflow guide grid can be formed to avoid the airflow from diverging and becoming turbulent at the air outlet 3.

[0032] To further enhance the airflow guiding effect, each airflow guide grid plate 5 is provided with a protruding connecting part 51, which extends along the airflow direction and faces the mounting port 6 of the fan head 1. After installation, the connecting part 51 can partially extend into the airflow concentrator ring 4, becoming a transition structure between the airflow guide grid and the airflow concentrator ring 4. To ensure smooth cooperation between the two, the outer surface of the connecting part 51 is designed as an arc-shaped contact surface, the curvature of which is consistent with the inner surface of the airflow concentrator ring 4, so that the two can achieve a seamless fit after contact.

[0033] The concentrator ring 4 is a ring-shaped shell structure that can be detachably installed in the mounting port 6 of the fan head 1 by means of snap-fit, clip, or thread, allowing users to choose whether to install the concentrator function as needed. The inner wall of the concentrator ring 4 has an arc-shaped constriction surface 41 on the side facing the airflow guide grid plate 5. This arc-shaped constriction surface 41 forms a certain contraction guide path, which is used to further compress the airflow cross-section, so that the airflow is more concentrated and discharged from the front end of the concentrator ring 4.

[0034] When the fan blade 7 rotates and generates airflow, the airflow first passes through the arc-shaped guide surface 52 of the guide grid 5, where it is initially guided, and then enters the internal space of the wind-gathering ring 4 through the connecting part 51. After entering the wind-gathering ring 4, the airflow continues to be guided along the arc-shaped converging surface 41 and then contracts and is discharged, achieving a complete transition from guidance to wind gathering. Due to the arc-shaped fitting structure between the connecting part 51 and the wind-gathering ring 4, the airflow can maintain continuous and stable guidance in this section of the path, avoiding turbulence or energy loss, thereby significantly enhancing the concentration and penetration of the exhaust air.

[0035] In addition, the air-concentrating ring 4 and the fan head 1 are connected by a tight-fitting structure to ensure that the air-concentrating ring 4 is stable and does not shake during operation, avoiding the impact of vibration on the air guiding effect, and also making it easy to disassemble, replace or clean.

[0036] Through the above structural design, this utility model achieves effective interlocking and coordinated airflow guidance between the airflow guide grid plate 5 and the wind-gathering ring 4, forming a complete airflow guide and closing structure. This effectively improves the airflow intensity and wind speed performance of the handheld fan, overcoming the shortcomings of poor airflow guidance and non-concentrated wind speed in traditional integrated air outlet structures. It has good practicality and market promotion value.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A handheld fan with a concentrating ring, characterized in that, include: A fan head (1) with a handle (2) is provided with a motor and a fan blade (7) inside the fan head (1). The fan blade (7) is driven by the motor and blows airflow toward the air outlet (3) of the fan head (1). The wind-gathering ring (4) is detachably installed in the assembly port (6) of the fan head (1); One or more airflow guide grids (5) are set at the air outlet (3) of the fan head (1). The airflow is guided by the airflow guide grids (5) to the position of the air-gathering ring (4) and then discharged.

2. The handheld fan with a concentrating ring according to claim 1, characterized in that: Each of the flow guide grids (5) is provided with an arc-shaped flow guide surface (52), and the thickness of the side of the flow guide grid (5) facing the fan blade (7) is less than the thickness of the other side.

3. The handheld fan with a concentrating ring according to claim 2, characterized in that: The airflow guide grid (5) has a protruding connecting part (51) that extends into the position of the air-gathering ring (4) and connects with the air-gathering ring (4).

4. The handheld fan with a concentrating ring according to claim 3, characterized in that: The wind-gathering ring (4) has an arc-shaped converging surface (41) on one side opposite to each guide grid plate (5). The airflow is guided by the arc-shaped converging surface (41) and then discharged.

5. The handheld fan with a concentrating ring according to claim 4, characterized in that: The contact surface of the connecting part (51) relative to the arc-shaped closing surface (41) is an arc-shaped fitting surface, and the two have the same curvature.

6. The handheld fan with a concentrating ring according to claim 1, characterized in that: The wind-gathering ring (4) is tightly connected to the fan head (1).

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