Fan impeller for breathing machine

Abstract

The utility model relates to the technical field of breathing machines, and discloses a fan impeller for a breathing machine, which comprises a blade mechanism and an impeller main body, reinforcing ribs and a circular ring are arranged at the bottom of the impeller main body, and the blade mechanism is arranged on the impeller main body; the blade mechanism comprises short blades and blade outer side faces. The impeller has the advantages of being simple in structure, low in noise, fast in acceleration and long in service life due to the fact that the short blades and the long blades are arranged on the impeller body, the nineteen sets of blades are evenly distributed on the circumference with the shaft sleeve as the center, and each set of blades is composed of one long blade and one short blade. From the side view, the blades are raised in a flat-top bamboo hat shape from the periphery to the center, so that the positions, close to the center, of the blades are gradually higher, the air inlet space is enlarged, inlet air is pressurized, the long blades are in a wavy shape formed by connecting two arcs, and the situation that the pressure of airflow is not uniform can be effectively buffered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a breathing machine technical field especially a fan impeller for breathing machine. BACKGROUND

[0002] With the population aging, the incidence of respiratory diseases in the elderly is also increasing, for example: snoring, rapid breathing, apnea and other symptoms, breathing machine is a medical instrument that can assist human respiratory function, and the oxygen generator is also an important supporting medical equipment, and the fan in the breathing machine increases the lung ventilation and improves the respiratory function. At present, the patient user has high requirements for the noise of the breathing machine, and the breathing machine on the current market has the defects of large noise and poor user experience, and the utility model solves the pain point and solves the problem of large breathing noise.

[0003] The existing fan impeller for the breathing machine is not convenient for effectively buffering the local pressure unevenness caused by the impact of the airflow, and is not convenient for forming stable airflow. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a fan impeller for breathing machine.

[0005] The utility model adopts the following technical scheme: a fan impeller for breathing machine, characterized by comprising blade mechanism, impeller main part, reinforcing rib, shaft sleeve, convex ring and convex ring, the top of the impeller main part is provided with blade mechanism;

[0006] The blade mechanism comprises short blade and blade outer side, the right end of the short blade is provided with long blade, the bottom end of the short blade is fixedly connected on the impeller main part, the bottom end of the long blade is fixedly connected on the impeller main part, the intersection of the blade outer side and blade top is provided with R angle one, and the intersection of the blade top and blade inner side is provided with R angle two.

[0007] As a further improvement of the above scheme, the number of long blades and short blades is set to nineteen groups, the long blades are distributed in a circle with the shaft sleeve as the center, the short blades are distributed in a circle with the shaft sleeve as the center, the included angle between the blade outer side and the impeller main part is less than 45 degrees, and the blade inner side is inclined outward from the impeller main part.

[0008] Through the above technical scheme, the middle blade is high, the air inlet space is expanded, and the entering air is pressurized.

[0009] As a further improvement of the above scheme, the bottom of the impeller main part is provided with a reinforcing rib, the top of the outer convex ring is fixedly connected to the bottom of the impeller main part, and the top of the inner convex ring is fixedly connected to the bottom of the impeller main part.

[0010] As a further improvement of the above-mentioned scheme, the outer convex ring is centered on the shaft sleeve axis, the maximum outer diameter of the outer convex ring is slightly smaller than the outer diameter of the impeller body or the same as the outer diameter of the impeller body, and the inner convex ring is centered on the shaft sleeve axis, and the inner convex ring is arranged on the inner side of the outer convex ring.

[0011] Through the technical scheme, the reinforcing ribs are 13 groups, and can also be several groups, and the structural stability between the impeller and the shaft sleeve is enhanced.

[0012] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0013] The utility model discloses a fan impeller for breathing machine, oxygen generator with simple structure, low noise, fast acceleration and long service life, which is provided with short blades and long blades on the impeller body. The short blades and the long blades are evenly distributed in nineteen groups around the shaft sleeve. Each group of blades is composed of one long blade and one short blade. The blades gradually increase from the periphery to the center in a conical shape in the side view. The middle blades are high, which expands the air inlet space and pressurizes the entering air. The long blades are connected by two joints in a wave shape, which can effectively buffer the direct impact of airflow and avoid the generation of turbulence, thereby forming stable airflow and reducing noise. The outer diameter of the blades is smaller than the circumferential diameter of the body, which is beneficial to improve the fan pressure, air volume and user experience. BRIEF DESCRIPTION OF DRAWINGS

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

[0015] Figure 2 It is a schematic diagram of the back view structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the side view structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the anatomical structure of the utility model.

[0018] Main symbol explanation:

[0019] 1, blade mechanism; 101, short blade; 102, long blade; 103, R angle one; 104, blade outer side; 105, blade top surface; 106, blade inner side; 107, R angle two; 2, impeller body; 201, reinforcing rib; 202, outer convex ring; 203, inner convex ring; 204, shaft sleeve (204). CONCRETE IMPLEMENTATION

[0020] In the following, the utility model is further described in combination with the drawings and the specific implementation, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0021] Embodiment:

[0022] 1. Please combine Figures 1-4 , a fan impeller for a breathing machine, comprising a blade mechanism 1, an impeller body 2, a reinforcing rib 201, a shaft sleeve 204, a convex ring 202 and a convex ring 203, the top of the impeller body 2 is provided with the blade mechanism 1.

[0023] The blade mechanism 1 comprises a short blade 101 and a blade outer side 104, the right end of the short blade 101 is provided with a long blade 102, the bottom end of the short blade 101 is fixedly connected to the impeller body 2, the bottom end of the long blade 102 is fixedly connected to the impeller body 2, the intersection of the blade outer side 104 and the blade top surface 105 is provided with an R angle one 103, and the intersection of the blade top surface 105 and the blade inner side 106 is provided with an R angle two 107.

[0024] The long blades 102 and the short blades 101 are arranged in nineteen groups, the long blades 102 are distributed in a circle with the shaft sleeve 204 as the center, the short blades 101 are distributed in a circle with the shaft sleeve 204 as the center, the angle between the blade outer side 104 and the impeller body 2 is less than 90 degrees, the blade inner side 106 is inclined outward from the surface of the impeller body 2, and from the side view, it gradually rises in a pagoda shape from the periphery to the center, so that the middle blade is high, the air inlet space is expanded, the entering air is pressurized, the long blade 102 is in a wave shape formed by two joints, which can effectively buffer the case that the airflow directly collides with the inside of the air duct, and then form a stable airflow. The stable airflow can avoid the generation of turbulent flow, the blade outer diameter is less than the main body outer diameter, and the sawtooth state is arranged on the outer periphery of the main body outside the outer periphery of the main body, which can disperse the turbine formed when the airflow separates from the impeller, reduce noise and improve user experience.

[0025] The bottom of the impeller body 2 is provided with the reinforcing rib 201, the top end of the outer convex ring 202 is fixedly connected to the bottom of the impeller body 2, and the top end of the inner convex ring 203 is fixedly connected to the bottom of the impeller body 2.

[0026] The outer convex ring 202 is centered on the axis of the shaft sleeve 204, the maximum outer diameter of the outer convex ring 202 is slightly smaller than the outer diameter of the impeller body 2 or the same as the outer diameter of the main body 2, the inner convex ring 203 is centered on the axis of the shaft sleeve 204, and the inner convex ring 203 is arranged on the inner side of the outer convex ring 202.

[0027] The implementation principle of a fan impeller for a breathing machine in the embodiment of the application is as follows: the impeller body 2 is provided with short blades 101 and long blades 102, has the advantages of simple structure, low noise, fast acceleration, and long service life, and the short blades 101 and the long blades 102 are uniformly distributed in nineteen groups with the shaft sleeve 204 as the center. Each group of blades is composed of one long blade 102 and one short blade 101, and from the side view, the blades gradually increase from the periphery to the center in a conical shape. In this way, the middle blades are high, the air inlet space is expanded, the entering air is pressurized, the long blades 102 are in a wave shape formed by two separate parts, which can effectively buffer the direct impact of the air flow on the inner wall of the air duct, thereby forming a moderate and stable air flow to avoid the generation of turbulent flow. The outer diameter of the blades is smaller than the circumferential diameter of the body, which reduces the wind pressure loss of the impeller when rotating at high speed with the shaft sleeve 204 as the rotation center.

[0028] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A fan impeller for a ventilator, characterized in that, It includes a blade mechanism (1), an impeller body (2), a reinforcing rib (201), a bushing (204), an outer protruding ring (202) and an inner protruding ring (203), and the blade mechanism (1) is provided on the top of the impeller body (2); The blade mechanism (1) includes a short blade (101) and a blade outer surface (104). A long blade (102) is provided at the right end of the short blade (101). The bottom end of the short blade (101) is fixedly connected to the impeller body (2). The bottom end of the long blade (102) is fixedly connected to the impeller body (2). An R-angle one (103) is provided at the intersection of the blade outer surface (104) and the blade top surface (105). An R-angle two (107) is provided at the intersection of the blade top surface (105) and the blade inner surface (106).

2. The fan impeller for a ventilator as described in claim 1, characterized in that: The number of long blades (102) and short blades (101) is set to nineteen groups. The long blades (102) are distributed circumferentially around the bushing (204), and the short blades (101) are distributed circumferentially around the bushing (204). The angle between the outer surface of the blade (104) and the impeller body (2) is less than 90 degrees, and the inner surface of the blade (106) is inclined outward from the impeller body (2).

3. The fan impeller for a ventilator as described in claim 1, characterized in that: The impeller body (2) is provided with a reinforcing rib (201) at the bottom. The top end of the outer protruding ring (202) is fixedly connected to the bottom of the impeller body (2), and the top end of the inner protruding ring (203) is fixedly connected to the bottom of the impeller body (2).

4. The fan impeller for a ventilator as described in claim 3, characterized in that: The outer protruding ring (202) is centered on the axis of the bushing (204). The maximum outer diameter of the outer protruding ring (202) is slightly smaller than or the same as the outer diameter of the impeller body (2). The inner protruding ring (203) is centered on the axis of the bushing (204) and is located inside the outer protruding ring (202).

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