A high wind speed blower

Abstract

A high-speed blower, the shell includes a wind disk and an air outlet pipe, a motor is fixedly installed on the outer surface of the wind disk, one end of the motor shaft is movably connected to the motor, the other end of the motor shaft passes through the surface of the wind disk and is movably connected to the inner cavity of the wind disk, a blower blade is fixedly installed on the outer surface of the motor shaft, and leather grain is fixedly installed on the pipe wall of the air outlet pipe. The present invention overcomes the shortcomings of the prior art and has a reasonable design. Through the effect of the leather grain convex points on the leather grain surface, the wind resistance around the pipe wall of the air outlet pipe is reduced, so that the airflow at the nozzle of the air outlet pipe is close to laminar flow, ensuring a higher flow rate in the central area, so that the wind speed at the nozzle is higher, thereby improving the working efficiency of the hair dryer; and the cross-sectional area of ​​the air duct in the wind disk increases linearly, so that the wind pressure changes linearly, thereby making the wind pressure more stable and falling slowly, so that the wind speed at the nozzle is higher.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a high-speed blower. Background Art

[0002] The blower operates eccentrically with an offset rotor in the cylinder, and causes the volume changes between the blades in the rotor slots to inhale, compress and expel air. During operation, the pressure difference of the blower is used to automatically send lubricating grease to the drip nozzle and drip into the cylinder to reduce friction and noise, while preventing the gas in the cylinder from flowing back.

[0003] However, the existing upper and lower shells of the blower currently have no guide structure. When the blower is working, the airflow will form a vortex instead of a laminar flow, resulting in high noise, low air volume, and high power consumption. The impeller does not guide the air sufficiently. Since the impeller's guide structure is not sufficient and there are no holes in the middle of the shell to dissipate heat, it is not conducive to the fan performance. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a high-speed blower, which overcomes the shortcomings of the prior art, has a reasonable design and a compact structure. Through the action of the dermatoglyphic bumps on the dermatoglyphic surface, the wind resistance around the pipe wall of the air outlet pipe is reduced, so that the airflow at the nozzle of the air outlet pipe is close to laminar flow, ensuring a higher flow velocity in the central area, so that the wind speed at the nozzle is higher, thereby improving the working efficiency of the hair dryer.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A high-speed blower comprises a shell, wherein the shell comprises a wind disk and an air outlet pipe, a motor is fixedly mounted on the outer surface of the wind disk, one end of a motor shaft is movably connected to the motor, the other end of the motor shaft passes through the surface of the wind disk and is movably connected to an inner cavity of the wind disk, a blower blade is fixedly mounted on the outer surface of the motor shaft, and the cross-sectional area of ​​an air duct formed between the wind disk and the motor shaft increases linearly.

[0007] Preferably, a metal strip is fixedly mounted on the inner wall of the air outlet pipe, and one end of the metal strip is fixedly mounted on the motor.

[0008] Preferably, the connection between the air disc and the air outlet pipe is configured as a rounded corner.

[0009] Preferably, leather grains are fixedly mounted on the pipe wall of the air outlet pipe, and leather grain convex points are provided on the surface of the leather grains.

[0010] Preferably, the outer surface of the wind disk is fixedly mounted with fixing screw holes.

[0011] Preferably, the cross-sectional distance B from any position on the wind disk to the motor shaft is B=A+D×π×(α / 2π)=A+D / 2×α, wherein A is the cross-sectional distance from the initial position of the air duct to the motor shaft, and α is the radian between any position of the wind disk and the initial position of the air duct; D is the diameter of the motor shaft, and its numerical range is 6.5cm-10cm, and D=2×(C-A0) / αtotal, wherein C is the vertical distance from the blower blades at the last air outlet end of the air duct to the wind disk, and its numerical range is 25cm-34cm, A0 is the vertical distance from the blower blades at the initial position of the air duct to the wind disk, and its numerical range is set to 8cm-13cm, and αtotal is the radian between the initial position of the air duct and the last air outlet end of the air duct.

[0012] The present invention provides a high-speed blower. It has the following beneficial effects: through the action of the dermatoglyphic convex points on the dermatoglyphic surface, the wind resistance around the pipe wall of the air outlet pipe is reduced, so that the air flow at the nozzle of the air outlet pipe is close to laminar flow, ensuring that the central area has a higher flow rate, so that the wind speed at the nozzle is higher, thereby improving the working efficiency of the hair dryer; and the cross-sectional area of ​​the air duct in the wind disk increases linearly, so that the wind pressure changes linearly, and then the wind pressure is more stable and drops slowly, so that the wind speed at the nozzle is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings required for describing the prior art are briefly introduced below.

[0014] Figure 1 A schematic diagram of the structure of the present invention;

[0015] Figure 2 A diagram of the dermatoglyphic installation structure of the first embodiment of the present invention;

[0016] Figure 3 The iron sheet installation structure diagram of the second embodiment of the present invention;

[0017] Figure 4 A schematic diagram of the flow direction of the airflow of the present invention;

[0018] Figure 5 A schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 6 Schematic diagram of air flow in Embodiment 3 of the present invention;

[0020] Figure 7 The external dimensions of the fan disk of the present invention Figure 1 ;

[0021] Figure 8 The external dimensions of the fan disk of the present invention Figure 2 ;

[0022] Fig. 9 A comparison diagram of the cross-sectional area of ​​the air duct of the present invention and that of the existing fan, wherein the dotted line portion represents the cross-sectional area change diagram of the present application, and the solid line portion represents the cross-sectional area change diagram of the existing fan.

[0023] Description of the numbers in the figure:

[0024] 1. Shell; 2. Fan disc; 3. Air outlet pipe; 4. Motor; 5. Motor shaft; 6. Blower blades; 7. Leather texture; 8. Metal strip; 9. Fixing screw holes. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0026] like Figures 1 to 9 As shown, embodiment 1, a high wind speed blower, includes a shell 1, the shell 1 includes a wind disk 2 and an air outlet pipe 3, a motor 4 is fixedly mounted on the outer surface of the wind disk 2, one end of a motor shaft 5 is movably connected to the motor 4, the other end of the motor shaft 5 passes through the surface of the wind disk 2 and is movably connected to the inner cavity of the wind disk 2, a blower blade 6 is fixedly mounted on the outer surface of the motor shaft 5, and the cross-sectional area of ​​the air duct formed between the wind disk 2 and the motor shaft 5 increases linearly.

[0027] like Figure 7 As shown, the cross-sectional distance from any position b on the fan disk 2 to the motor shaft 5 is:

[0028] B=A+D×π×(α / 2π)=A+D / 2×α

[0029] Where A is the cross-sectional distance from the initial position a of the air duct to the motor shaft, α is the arc between any position b of the fan disk and the initial position of the air duct; D is the diameter of the motor shaft, and its value range is 6.5cm-10cm; Figure 8 As shown,

[0030] D=2×(C-A0) / α 总

[0031] Wherein, C is the vertical distance from the fan blade 6 to the fan disk 2 at the last air outlet of the air duct, and its value range is set to 25cm-34cm, A0 is the vertical distance from the fan blade 6 to the fan disk 2 at the initial position of the air duct, and its value range is set to 8cm-13cm, α 总 It is the arc between the initial position of the air duct and the final air outlet position of the air duct.

[0032] When the device is running, the cross-sectional area of ​​the air duct in the wind disk 2 increases linearly, so that the wind pressure also changes linearly, and the wind pressure is more stable and drops slowly, so that the wind speed at the nozzle is higher. For the existing fan, the cross-sectional area of ​​the air duct increases in a curve fitting four arc segments, and this structure has a faster drop in wind pressure, a lower wind speed at the nozzle, and a larger air volume. Fig. 9 Shown is a comparison diagram of the cross-sectional area change of the air duct of the present application and the cross-sectional area change of the air duct of the existing fan, wherein Pi is the initial wind pressure, Pe is the wind pressure at the air outlet, the dotted line portion is the cross-sectional area change diagram of the present application, and the solid line portion is the cross-sectional area change diagram of the air duct of the existing fan; and the value of Pe in the present application is higher than that of the general fan design to increase the wind speed at the outlet.

[0033] Embodiment 2, as Figure 3 As shown, based on the further improvement of the first embodiment, a metal strip 8 is fixedly mounted on the inner wall of the air outlet pipe 3, and one end of the metal strip 8 is fixedly mounted on the motor 4. Since the friction of the dry air flow will generate static electricity, the metal strip 8 is connected to the housing of the motor 4, so that the generated static electricity can be effectively guided out through the position of the motor shaft 5 to avoid static electricity accumulation.

[0034] Embodiment three, as Figure 4 As shown, based on the further improvement of the first embodiment, the connection between the air disc 2 and the air outlet pipe 3 is set to be rounded. Thus, when the airflow flows to the air outlet pipe 3, the airflow backflow can be effectively avoided, the air can flow out from the nozzle better, and the air flow loss can be effectively avoided.

[0035] Embodiment 4 is a further improvement based on embodiment 1. A leather grain 7 is fixedly mounted on the wall of the air outlet pipe 3 , and leather grain convex points are arranged on the surface of the leather grain 7 .

[0036] like Figure 2 As shown, through the action of the ridge convex points on the surface of the ridge 7, the wind resistance around the wall of the air outlet pipe 3 is reduced, so that the air flow at the nozzle of the air outlet pipe 3 is close to laminar flow, ensuring a higher flow rate in the central area, so that the wind speed at the nozzle is higher, thereby improving the working efficiency of the hair dryer; Figure 6 As shown, laminar flow only occurs at low Reynolds numbers (Reynolds number = inertia force / viscosity coefficient = VL / υ, where V represents the wind speed at the air outlet and L is the characteristic length). In this embodiment, the surface friction is increased by adding dermatoglyphic bumps, and the kinematic viscosity coefficient υ is increased, thereby reducing the Reynolds number, making the airflow at the nozzle close to laminar flow, and promoting the fluid to flow parallel to the object surface, making the airflow at the nozzle close to laminar flow; and since laminar flow is the fluid flowing in orderly parallel layers, there is no velocity component or pulsation of velocity component, so the noise is also reduced compared to the noise at turbulent flow.

[0037] Embodiment 5 is a further improvement based on embodiment 1, in which the outer surface of the wind disk 2 is fixedly installed with fixing screw holes 9; the fixing screw holes 9 can better fix the housing 1.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high wind speed blower, comprising a housing, characterized in that: The housing includes an air disk and an air outlet pipe, a motor is fixedly mounted on the outer surface of the air disk, one end of a motor shaft is movably connected to the motor, the other end of the motor shaft passes through the surface of the air disk and is movably connected to the inner cavity of the air disk, a blower blade is fixedly mounted on the outer surface of the motor shaft, and the cross-sectional area of ​​the air duct formed between the air disk and the motor shaft increases linearly; The connection between the air disc and the air outlet pipe is configured as a rounded corner; Leather grains are fixedly mounted on the wall of the air outlet pipe, and convex points of leather grains are arranged on the surface of the leather grains; The cross-sectional distance B from any position on the fan disk to the motor shaft = A + D × π × (α / 2π) = A + D / 2 × α, where A is the cross-sectional distance from the initial position of the air duct to the motor shaft, α is the arc between any position of the fan disk and the initial position of the air duct; D is the diameter of the motor shaft, and its value range is 6.5cm-10cm, and D = 2 × (C-A0) / α 总 , where C is the vertical distance from the fan blade at the last outlet of the air duct to the fan disk, and its value range is 25cm-34cm, A0 is the vertical distance from the fan blade at the initial position of the air duct to the fan disk, and its value range is set to 8cm-13cm, α 总 It is the arc between the initial position of the air duct and the final air outlet position of the air duct.

2. A high wind speed blower according to claim 1, characterized in that: A metal strip is fixedly mounted on the inner wall of the air outlet pipe, and one end of the metal strip is fixedly mounted on the motor.

3. A high wind speed blower according to claim 1, characterized in that: The outer surface of the air disc is fixedly mounted with fixing screw holes.

Images