Novel air blowing structure

Abstract

A novel air blowing structure is characterized in that a motor base is arranged at the bottom of a motor, is arranged in an air guide ring and is fixedly connected with the inner wall of the air guide ring; the motor output end is provided with a wind wheel; the wind wheel comprises an inner ring, blades are arranged outside the side wall of the inner ring, and a top cover is arranged on the tops of the blades. The blades are arranged in a backward inclined manner from top to bottom; the tops of the blades incline downwards from the center of the wind wheel to the outer end of the wind wheel. The top cover is attached to the top of the blade; the motor, the wind wheel and the motor base are arranged in a shell formed by buckling the bottom shell and the top shell; an annular air outlet is formed in the side wall of the bottom shell from top to bottom; a top shell tuyere is formed in the middle of the top shell; the inner diameter of the bottom of the backflow baffle is smaller than the inner diameter of the top shell air opening and is the same as the inner diameter of the inner ring; a gap is formed between the top cover and the top shell, and the gap and the backflow baffle jointly form a backflow duct; air guide blades are arranged on the air guide ring corresponding to the annular air outlet; the inner sides of the air guide blades are positioned on the outer sides of the blades; and the air guide sheets are bent anticlockwise from the outer ends to the inner ends.

Description

Technical Field

[0001] The utility model relates to the field of electrical appliances, in particular to a novel blowing structure. Background Art

[0002] Since people spend a long time indoors, the indoor environment has attracted more and more attention. Indoor heating devices are widely used in indoor spaces. However, the existing air outlet structures of heating devices can only achieve swinging blowing, and the warm air blown out is directly blown onto users, which is likely to cause discomfort. Therefore, a heater structure that can make the warm air softer and does not affect the heating efficiency is needed. Summary of the Utility Model

[0003] A novel blowing structure includes a bottom shell, a top shell, a motor, a wind wheel, a motor base and a guide air ring. The bottom of the motor is provided with the motor base, and the motor base is arranged inside the guide air ring and fixedly connected to the inner wall of the guide air ring; the output end of the motor is provided with the wind wheel; the wind wheel includes an inner ring, and blades are arranged in an array on the outer side wall of the inner ring, and a top cover is arranged on the top of the blades; the blades are arranged in a backward inclined shape from top to bottom; the top of the blades is inclined downward from the center of the wind wheel to the outer end of the wind wheel; the top cover is arranged in a fitting manner on the top of the blades; the motor, the wind wheel and the motor base are arranged inside the shell formed by buckling the bottom shell and the top shell; an annular air outlet is opened on the side wall of the bottom shell from top to bottom; a top shell air outlet is opened in the middle of the top shell; a return baffle is arranged inward at the top shell air outlet, and the inner diameter of the bottom of the return baffle is smaller than the inner diameter of the top shell air outlet and is the same as the inner diameter of the inner ring; there is a gap between the top cover and the top shell, and the gap and the return baffle together form a return duct; the guide air ring is provided with guide vanes corresponding to the annular air outlet, and the inner side of the guide vanes is located outside the blades; the outer end to the inner end of the guide vanes is bent counterclockwise.

[0004] Further, the top end of the annular air outlet opened on the side wall of the bottom shell is arranged in a polygonal ring shape; a partition is arranged at the polygonal ring angle to divide the top end of the annular air outlet into a plurality of top air outlets; the lower end of the annular air outlet is a circular air outlet.

[0005] Further, a heating device is arranged inside the top air outlet.

[0006] Further, the guide air ring is provided with guide vanes corresponding to the top air outlets. The guide vanes include large guide vanes and small guide vanes. The large guide vanes are arranged at both ends of the top air outlet, and the small guide vanes are arranged in an equidistant array on the top of the top air outlet between the two large guide vanes.

[0007] Further, the height of the guide vanes gradually increases from the inner wall of the guide air ring to the outer wall of the guide air ring.

[0008] Further, studs are arranged on the inner wall of the guide air ring, screw holes are opened on the motor base corresponding to the studs, and screws are screwed into the screw holes and the studs to fix the motor base and the guide air ring.

[0009] Further, a grille structure is also provided inside the air outlet.

[0010] Further, fixing plates are correspondingly provided at the bottom edge of the top shell and the top edge of the bottom shell. Screws are screwed into the fixing plates and cooperate with nuts to fix the top shell and the bottom shell.

[0011] Further, the thermal protector of the motor is arranged on the outer wall of the air guide ring.

[0012] Further, the inner end to the middle of the air guide vane is horizontally arranged, and the middle to the rear part bulges upward.

[0013] The beneficial effects of the present utility model are as follows: an annular air outlet is provided, with a larger air outlet area; an air guide ring is provided to disperse the air flow and avoid the problem that the user feels uncomfortable due to the direct blowing of the blower; a housing is provided to integrate the blowing structure, which is convenient for disassembly, installation and maintenance; the air outlet is divided into multiple ones, and each air outlet is provided with a separate heating device to avoid the problem that the heating function cannot be used due to the damage of a certain heating device; the thermal protector is arranged on the outer wall of the air guide ring, which is convenient for maintenance. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a top view of the internal structure of the blower;

[0016] Figure 3 is an internal sectional view of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the motor base and the air guide ring;

[0018] Figure 5 is Figure 4 top view of.

[0019] In the figure, 1. bottom shell; 2. annular air outlet; 3. heating device; 4. air guide ring; 5. air guide vane; 6. motor base; 7. motor; 8. inner ring; 9. blade; 10. top cover; 11. top shell; 12. top shell air outlet; 13. bottom shell air outlet; 14. return baffle; 15. return duct; 16. air outlet duct. Detailed Embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the following further details the present utility model in conjunction with embodiments. To thoroughly understand the present utility model, some specific details will be involved in the following description. Without these specific details, the present utility model can still be implemented, that is, those skilled in the art can more effectively introduce the essence of their work to other technicians in the field using these descriptions and statements here. In addition, it should be noted that it should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the actual protection scope. All raw materials used in the following embodiments are commercially available products.

[0021] Embodiment 1, as Figures 1 - 5 shown, a novel blowing structure includes a bottom shell 1, a top shell 11, a motor 7, a wind wheel, a motor base 6 and a wind guide ring 4. The bottom of the motor 7 is provided with the motor base 6, and the motor base 6 is arranged inside the wind guide ring 4 and is fixedly connected to the inner wall of the wind guide ring 4; the output end of the motor 7 is provided with the wind wheel; the wind wheel includes an inner ring 8, and blades 9 are arranged in an array on the outer side wall of the inner ring 8. A top cover 10 is arranged at the top of the blades 9; the blades 9 are arranged in a backward-inclined shape from top to bottom; the top of the blades 9 is inclined downward from the center of the wind wheel to the outer end of the wind wheel; the top cover 10 is arranged in a fitting manner on the top of the blades 9; the motor 7, the wind wheel and the motor base 6 are arranged inside the housing formed by the buckling of the bottom shell 1 and the top shell 11; an annular air outlet is opened on the side wall of the bottom shell 1 from top to bottom; a top shell air outlet 12 is opened in the middle of the top shell 11; a return baffle 14 is arranged inwardly at the top shell air outlet 12, and the inner diameter of the bottom of the return baffle 14 is smaller than the inner diameter of the top shell air outlet 12 and is the same as the inner diameter of the inner ring 8; there is a gap between the top cover 10 and the top shell 11, and this gap and the return baffle 14 together form a return air duct 15; the wind guide ring 4 is provided with wind guide vanes 5 arranged corresponding to the annular air outlet, and the inner side of the wind guide vanes 5 is located outside the blades 9; the outer end to the inner end of the wind guide vanes 5 is bent counterclockwise. The gap between the side wall of the top shell 11 and the wind wheel and the motor base 6 forms an air outlet duct 16.

[0022] The top end of the annular air outlet opened on the side wall of the bottom shell 1 is arranged in a polygonal ring shape; partition plates are arranged at the polygonal ring angles to divide the top end of the annular air outlet into multiple top air outlets; the lower end of the annular air outlet is a circular air outlet.

[0023] A heating device 3 is arranged inside the top air outlet, and the thermal protector 14 of the motor 7 is arranged on the outer wall of the wind guide ring 4.

[0024] The wind guide ring 4 is provided with wind guide vanes 5 corresponding to the top air outlets. The wind guide vanes 5 include large wind guide vanes and small wind guide vanes. The large wind guide vanes are arranged at both ends of the top air outlet, and the small wind guide vanes are arranged at equal intervals on the top of the top air outlet between the two large wind guide vanes.

[0025] The height of the air guide vane 5 gradually increases from the inner wall of the air guide ring 4 to the outer wall of the air guide ring 4.

[0026] Studs are arranged on the inner wall of the air guide ring 4, and screw holes are correspondingly formed in the motor base 6 for the studs. Screws are screwed into the screw holes and the studs to fix the motor base 6 and the air guide ring 4.

[0027] A grille structure is further arranged in the annular air outlet 2.

[0028] Fixed plates are correspondingly arranged at the bottom edge of the top shell 11 and the top edge of the bottom shell 1. Screws are screwed into the fixed plates and cooperate with nuts to fix the top shell 11 and the bottom shell 1.

[0029] The working principle of the present utility model is as follows: The impeller is a backward-inclined diagonal flow impeller. Compared with a conventional impeller, it has a larger air volume, higher efficiency, and better sound insulation effect at the same rotational speed. As Figure 2 shown, its rotation direction is counterclockwise. The blade is a semi-circular arc with an angle less than 90 degrees with the tangential direction of its rotation. This impeller structure makes the airflow passing through the inner circle smoother. The airflow passing through the impeller generates much less return shock waves and turbulence than the currently popular forward-inclined centrifugal impeller on the market, which can increase its working efficiency. At the same time, the reduction of turbulence and return shock waves can effectively reduce its air resistance coefficient, making it more silent and efficient. It also reduces the load on the motor and lowers the power consumption. As Figure 3 shown, an inclined downward return duct is formed between the top cover and the top shell. When the airflow enters from the top of the impeller at a high speed, it will first be driven by the backward-inclined impeller to do a centrifugal motion and be thrown out of the duct. When the airflow does a centrifugal motion inside the duct, it will move downward along the inclined top cover of the upper part of the impeller. During this process, the high-speed airflow is squeezed and redirected by the inclined downward top cover. At this time, part of the kinetic energy is converted into potential energy, increasing the pressure of the internal airflow. At the same time, the return duct has good pressure retention and guiding capabilities. It can make the airflow maintain a high-pressure and high-speed state when it is thrown out. At the same time, the airflow is extremely easy to amplify shock waves and turbulence during the lane-changing process. The backward-inclined arc impeller reduces the turbulence and shock waves to a very low state and level.

[0030] When the fan is running, the airflow enters from the top shell air outlet 12. Due to the guiding effect of the return baffle 14, the airflow enters the wind wheel and moves toward the center of the wind wheel along the return baffle 14 due to the flow inertia, and then the diagonal flow wind wheel performs a tilted downward centrifugal action. Due to the guiding effect of the return baffle 14, the incoming airflow is more concentrated toward the center, which increases the stroke of the centrifugal movement and can complete a greater acceleration during the centrifugal action. At the same time, the faster the speed, the greater the potential energy pressure generated, which can effectively improve the airflow boosting process and generate a greater wind pressure. After being pressurized and guided by the wind wheel, the airflow will enter the downward-tilted air outlet duct 16 at high speed and high pressure. Since the airflow thrown out by the wind wheel is tilted downward at an angle of about 45 degrees, it can better gradually perform a vertical downward flow action along the outer wall of the lower air outlet. Reduce the energy loss caused by changing wind direction. At the same time, the airflow thrown out by the wind wheel is tilted at an angle of about 45 degrees, and at this time, a certain tilt angle is formed with the outer wall of the air outlet duct 16, which causes the air outlet duct to produce secondary pressurization and guidance of the airflow, further increasing the pressure of the fluid. At the same time, the air outlet duct 16 also plays a certain good pressure-maintaining role. The backflow baffle 14 not only has a good guiding effect on the incoming air, but also has a good guiding effect on the reverse outflowing gas in the air outlet duct, so that it keeps the same direction as the airflow of the top shell air outlet 12 and flows into the wind wheel again, reducing the collision and consumption of the extrusion of the backflow gas and the incoming airflow.

[0031] The air guide blade 5 is arranged in the air guide ring 4, and the wind wheel moves counterclockwise, and the airflow is also rotating counterclockwise and tilting downward. Then the airflow can smoothly flow along the air guide blade 5 at a very small angle, gradually approaching and tilting downward to the edge of the outer wall, reducing the loss in the process of airflow guidance. At the same time, the front end of the air guide blade 5 is straight, which can effectively reduce turbulence, and the rear end is provided with a convexity that gradually begins to produce curvature. At this time, an ultra-high-pressure and high-speed area is formed at the connection between the air guide blade 5 and the air guide ring 4. The fluid in this area has strong kinetic energy. According to the Laval jet principle, based on the high-speed kinetic energy here, it will drive the surrounding fluid to produce a faster flow rate and pressure.

[0032] Part of the high-pressure air in the air outlet duct will be squeezed into the return channel. When the airflow reaches the top of the return channel, the return baffle will block the airflow and guide it into the wind wheel to continue blowing, effectively avoiding airflow leakage and improving airflow utilization.

[0033] The entire blowing structure has a circular air outlet and wind wheel at the top, a gradually curvature conversion to a straight polygonal structure in the middle, and a gradually circular air outlet at the bottom. Its function is to place a heater or other airflow processing mechanism in the middle. It can be made into a polygonal structure instead of a circular structure, which can effectively reduce the difficulty of production and processing, increase production efficiency, and reduce costs. Figure 1As shown, eight cuboid-shaped heating devices 3 are placed in the middle position of this application. The processing and production difficulty is far lower than that of the existing ring-shaped heating devices on the market. It greatly improves the production efficiency and product quality, and greatly reduces the production cost and defect rate.

[0034] The utility model is provided with a ring-shaped air outlet 2, which has a larger air outlet area; a wind guiding ring 4 is provided to disperse the air flow to avoid the problem that the user feels uncomfortable due to the direct blowing of the fan; a housing is provided to integrate the blowing structure, which is convenient for disassembly, installation and maintenance; the air outlet is divided into multiple ones, and each air outlet is provided with a separate heating device 3 to avoid the problem that the heating function cannot be used due to the damage of a certain heating device 3; the thermal protection is arranged on the outer wall of the wind guiding ring 4, which is convenient for maintenance.

[0035] The technical solutions provided by the embodiments of the present utility model have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present utility model. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present utility model; at the same time, for those of ordinary skill in the art, according to the embodiments of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation of the present utility model.

Claims

1. A new hair dryer structure, characterized in that: It includes a bottom shell, a top shell, a motor, a wind wheel, a motor base and a wind guide ring. The motor base is provided at the bottom of the motor and is arranged inside the wind guide ring and fixedly connected to the inner wall of the wind guide ring; the output end of the motor is provided with a wind wheel; the wind wheel includes an inner ring, and blades are arranged outside the side wall of the inner ring. A top cover is provided at the top of the blades; the blades are arranged in a backward inclined shape from top to bottom; the top of the blades is inclined downward from the center of the wind wheel to the outer end of the wind wheel; the top cover is arranged in a fitting manner on the top of the blades; the motor, the wind wheel and the motor base are arranged inside the shell formed by buckling the bottom shell and the top shell; an annular air outlet is opened on the side wall of the bottom shell from top to bottom; a top shell air outlet is opened in the middle of the top shell; a return baffle is arranged inward at the top shell air outlet. The inner diameter of the bottom of the return baffle is smaller than the inner diameter of the top shell air outlet and is the same as the inner diameter of the inner ring; there is a gap between the top cover and the top shell, and the gap and the return baffle together form a return duct; the wind guide ring is provided with wind guide vanes corresponding to the annular air outlet, and the inner side of the wind guide vanes is located outside the blades; the outer end to the inner end of the wind guide vanes is bent counterclockwise.

2. The novel hair dryer structure described in claim 1, characterized in that: The top end of the annular air outlet opened on the side wall of the bottom shell is arranged in a polygonal ring shape; a partition plate is arranged at the polygonal ring angle to divide the top end of the annular air outlet into a plurality of top air outlets; the lower end of the annular air outlet is a circular air outlet.

3. The novel hair dryer structure described in claim 2, wherein: A heating device is arranged inside the top air outlet.

4. The novel hair-drying structure as described in claim 2, wherein: The wind guide ring is provided with wind guide vanes corresponding to the top air outlets. The wind guide vanes include large wind guide vanes and small wind guide vanes. The large wind guide vanes are arranged at both ends of the top air outlet, and the small wind guide vanes are arranged at equal intervals on the top of the top air outlet between the two large wind guide vanes.

5. The novel hair dryer structure as described in claim 4, characterized in that: The height of the wind guide vanes gradually increases from the inner wall of the wind guide ring to the outer wall of the wind guide ring.

6. The novel hair dryer structure described in claim 1, characterized in that: The inner wall of the wind guide ring is provided with studs, and the motor base is provided with screw holes corresponding to the studs. Screws are screwed into the screw holes and the studs to fix the motor base and the wind guide ring.

7. The novel hair dryer structure described in claim 1, wherein: A grille structure is also arranged inside the air outlet.

8. The novel hair dryer structure described in claim 1, wherein: Fixing plates are correspondingly arranged at the bottom of the edge of the top shell and the top of the edge of the bottom shell. Screws are screwed into the fixing plates and cooperated with nuts to fix the top shell and the bottom shell.

9. The novel hair dryer structure as described in claim 1, wherein: The thermal protector of the motor is arranged on the outer wall of the wind guide ring.

10. The novel hair dryer structure as described in claim 1, characterized in that: The inner end to the middle of the wind guide vanes is horizontally arranged, and the middle to the rear is convex upward.

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