Outdoor hair dryer

Abstract

An outdoor hair dryer comprises a shell, a fan arranged in the shell and a motor driving the fan to rotate, the shell comprises an air inlet and an air outlet, the fan is arranged at the air inlet and comprises a streamline cover, fan blades and an air inlet cone, the fan blades are fixed to the streamline cover, and the air inlet cone is fixed to the streamline cover. The air inlet cone is connected with the streamline cover in a threaded or buckled mode, the streamline cover comprises a first curved surface, the air inlet cone comprises a second curved surface, and the first curved surface and the second curved surface are smoothly connected to guide air.

Description

Technical Field

[0001] The utility model relates to the field of outdoor tools, in particular to an outdoor hair dryer. Background Art

[0002] The present invention relates to an outdoor hair dryer, which is used for sweeping and cleaning by blowing air, in particular over large surfaces such as lawns, urban ventilation ducts, outdoor parking lots, sports or playgrounds, etc. The results obtained by using a hair dryer are similar to those achieved by using a traditional broom or toothed rake, but the work is much easier and faster. In this application, the use of this machine is to drive away the debris that is spread all over the ground and partially arranged on obstacles to form a pile or a pile, which is then collected by an absorbing machine, a sweeper or a road sweeper. Such hair dryers usually exist in the form of handheld portable devices and can be supported by a shoulder strap. In practice, they are used by constantly adapting the speed of the air flow to the conditions of the treated surface. These hair dryers can be designed for professional use and also for home use.

[0003] The existing outdoor hair dryers are axial flow hair dryers. The axial flow fans used generally need to be fixed to the motor shaft through a nut / bolt structure. When the motor is started, the fan can be driven to rotate. In order to prevent the fan from slipping, a cylindrical bushing with a flat square is usually required to be pressed between the motor and the fan. The inner hole of the bushing has threads. After the fan is pressed into the bushing, the fan is fixed to the motor shaft by screws. The other is to fix the fan to the threaded shaft by bolts. Both structures require a cylindrical step hole to be designed at the fan end to install bolts or nuts. The step hole is the direction of airflow entering the fan. The opening in the middle seriously affects the smoothness of the airflow, which in turn affects the air volume of the fan. At the same time, it will increase the noise of the whole machine, greatly affecting the work efficiency and causing great trouble to users. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of the prior art, to set an air intake cone at the step hole to guide the air, so as to make the air intake flow smoother, thereby affecting the air volume of the fan, and at the same time reducing the noise of the whole machine, and providing a more efficient outdoor hair dryer. The utility model is achieved through the following technical solutions:

[0005] An outdoor hair dryer comprises a shell, a fan arranged in the shell and a motor driving the fan to rotate, the shell comprises an air inlet and an air outlet, the fan is arranged at the air inlet, the fan comprises a streamline cover, fan blades and an air inlet cone, the fan blades are fixed to the streamline cover, the air inlet cone is connected to the streamline cover by means of threads or snaps, the streamline cover comprises a first curved surface, the air inlet cone comprises a second curved surface, the first curved surface and the second curved surface are smoothly connected to guide air, the curvature and the curvature radius at the connection between the first curved surface and the second curved surface are similar, and the fan is configured to smoothly guide air.

[0006] Furthermore, the fan includes a through hole connected to the motor, the air intake cone covers the through hole and is located on a side of the fan blade away from the motor; the air intake cone has a maximum outer diameter at the connection between the first curved surface and the second curved surface.

[0007] Furthermore, the motor includes an output shaft, the outdoor hair dryer includes a sleeve, the sleeve is sleeved on the output shaft, and a thread is provided inside the sleeve. The air intake cone includes a conical surface and a screw portion, and the screw portion is configured to cooperate with the thread of the sleeve, so that the air intake cone is installed on the fan.

[0008] Furthermore, the through hole includes an inner wall, the air intake cone includes circumferentially arranged ribs, the distance between the ribs and the inner wall is 0.8 to 1.2 mm, and the ribs are configured to increase the overall strength of the air intake cone.

[0009] Furthermore, the fan comprises a first annular concave surface, the air inlet cone abuts against the first annular concave surface. The fan comprises a second annular concave surface, and the distance between the air inlet cone and the second annular concave surface is 0 to 0.3 mm.

[0010] Furthermore, the conical surface includes a groove, and the groove is configured to disassemble and assemble the intake cone.

[0011] The outdoor hair dryer is provided with an air intake cone at the step hole, and the air intake cone is provided with a screw portion, which is configured to fasten the air intake cone to the fan, and the streamline cover includes a first curved surface, the air intake cone includes a second curved surface, the first curved surface and the second curved surface include a second curved surface, the first curved surface and the second curved surface are smoothly connected to guide the air, and the curvature and curvature radius at the connection between the first curved surface and the second curved surface are similar, so that the air is guided more smoothly, and the air is smoothly connected to guide the air, so that the intake airflow is smoother, which in turn affects the air volume of the fan, and at the same time reduces the noise of the whole machine, providing a more efficient outdoor hair dryer, greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a partial stereoscopic view of the hair dryer barrel of an outdoor hair dryer according to one embodiment of the present application.

[0013] Figure 2 The present invention is a cross-sectional view of the air cylinder of an outdoor hair dryer in the prior art.

[0014] Figure 3 for Figure 1 A cross-sectional view of an outdoor hair dryer is shown.

[0015] Figure 4 for Figure 1 A perspective view of an outdoor hair dryer is shown.

[0016] Figure 5 for Figure 1 A perspective view of an outdoor hair dryer flowline cover is shown. DETAILED DESCRIPTION

[0017] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0018] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for convenience of explanation and are not limited to one position or one spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0019] Combination Figures 1 to 3An outdoor hair dryer 100 includes a housing, a fan 1 disposed in the housing, and a motor 2 for driving the fan 1 to rotate. The housing includes an air inlet 3 and an air outlet 4. The fan 1 is disposed at the air inlet 3. In the prior art, a cylindrical through hole 6 is designed at the end of the fan 1. When the motor 2 is started, the fan 1 can be driven to rotate. The inner hole of the bushing has a thread 71. When the fan 1 is pressed into the bushing, the fan 1 is fixed by a screw so that a bolt or a nut can be installed. The airflow enters the outdoor hair dryer 100 from the air inlet 3. The loss part of the through hole 6 is After being divided, it flows from the fan 1 to the air outlet 4. The utility model provides an outdoor hair dryer 100, the fan 1 includes a streamline cover, fan blades and an air inlet cone 5, the fan blades are fixed to the streamline cover, the air inlet cone 5 is connected to the streamline cover by a thread 71 or a snap-on method, the streamline cover includes a first curved surface A, the air inlet cone 5 includes a second curved surface B, the first curved surface A and the second curved surface B are smoothly connected to guide the air, the curvature and the curvature radius at the connection between the first curved surface A and the second curved surface B are similar, and are configured to smoothly guide the air.

[0020] Preferably, the fan 1 includes a through hole 6 connected to the motor 2, the air inlet cone 5 covers the through hole 6 and is located on the side of the fan blade away from the motor 2; the air inlet cone 5 has a maximum outer diameter at the connection between the first curved surface A and the second curved surface B. The motor 2 includes an output shaft, and the outdoor hair dryer 100 includes a sleeve 7, which is sleeved on the output shaft, and a thread 71 is provided in the sleeve 7. The air inlet cone 5 includes a conical surface 51 and a screw portion 52, and the screw portion 52 is configured to cooperate with the thread 71 of the sleeve 7, so that the air inlet cone 5 is installed on the fan 1.

[0021] Combination Figure 4 and Figure 5 The through hole 6 includes an inner wall, and the intake cone 5 includes circumferentially arranged ribs 53 , the distance between the ribs 53 and the inner wall is 0.8 to 1.2 mm, and the ribs 53 are configured to increase the overall strength of the intake cone 5 .

[0022] Preferably, the fan 1 comprises a first annular concave surface 61, and the air inlet cone 5 abuts against the first annular concave surface 61. The fan 1 comprises a second annular concave surface 62, and the distance between the air inlet cone 5 and the second annular concave surface 62 is 0-0.3 mm.

[0023] Preferably, the conical surface 51 includes a groove 54 , and the groove 54 is configured to disassemble and assemble the intake cone 5 .

[0024] The outdoor hair dryer 100 is provided with an air intake cone 5 at the step hole, and the air intake cone 5 is provided with a screw portion 52, which is configured to fasten the air intake cone 5 to the fan 1, and the streamline cover 11 includes a first curved surface A, and the air intake cone 5 includes a second curved surface B. The first curved surface A and the second curved surface B are smoothly connected to guide the air, and the curvature and curvature radius of the connection between the first curved surface A and the second curved surface B are similar, so that the air is guided more smoothly, thereby making the intake airflow smoother, thereby affecting the air volume of the fan, and at the same time reducing the noise of the whole machine, providing a more efficient outdoor hair dryer, greatly improving work efficiency.

[0025] It should be understood that the drawings illustrate exemplary embodiments in detail, and it should be understood that the present application is not limited to the details or methods set forth in the specification or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered as limiting.

[0026] In view of this specification, further modifications and alternative embodiments of various aspects of the present invention will be obvious to those skilled in the art. Therefore, this description should be interpreted as being illustrative only. The configurations and arrangements shown in various exemplary embodiments are illustrative only. Although only some embodiments are described in detail in this disclosure, many modifications (e.g., variations in the size, dimensions, structure, shape and proportion of various elements, the value of parameters, the installation arrangement, the use of materials, colors, orientations, etc.) can be made without substantially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as being integrally formed can be constructed of multiple parts or elements, the position of the elements can be reversed or otherwise changed, and the nature or number or position of discrete elements can be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm or method steps can be changed or reordered. Other replacements, modifications, changes and omissions can also be made to the design, operating conditions and arrangements of various exemplary embodiments without departing from the scope of the present invention.

[0027] Although the current application describes a specific combination of features in the appended claims, various embodiments of the present invention are directed to any combination of any of the features described herein, regardless of whether such a combination is currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.

[0028] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the drawings are drawn to scale. Actual measurements of the drawings will disclose the relative dimensions, angles, and ratios of the various exemplary embodiments. The various exemplary embodiments extend to various ranges around absolute and relative dimensions, angles, and ratios that can be determined from the drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the drawings. In addition, actual dimensions that are not explicitly stated in this specification can be determined by using the ratios of the dimensions measured in the drawings in conjunction with the explicit dimensions stated in this specification.

Claims

1. An outdoor hair dryer, comprising a housing, a fan disposed in the housing, and a motor for driving the fan to rotate, wherein the housing comprises an air inlet and an air outlet, the fan is disposed at the air inlet, and is characterized in that: The fan includes a streamline cover, fan blades and an air intake cone, the fan blades are fixed to the streamline cover, the air intake cone is connected to the streamline cover by means of threads or snaps, the streamline cover includes a first curved surface, the air intake cone includes a second curved surface, and the first curved surface and the second curved surface are smoothly connected to guide air.

2. The outdoor hair dryer according to claim 1, characterized in that: The fan comprises a through hole connected to the motor, and the air inlet cone covers the through hole and is located on a side of the fan blade away from the motor; The intake cone has a maximum outer diameter at a junction of the first curved surface and the second curved surface.

3. The outdoor hair dryer according to claim 1, characterized in that: The motor comprises an output shaft, and the outdoor hair dryer comprises a shaft sleeve, which is sleeved on the output shaft and has a thread inside.

4. The outdoor hair dryer according to claim 3, characterized in that: The intake cone includes a tapered surface and a screw portion, and the screw portion is configured to cooperate with the thread of the sleeve.

5. The outdoor hair dryer according to claim 2, characterized in that: The through hole includes an inner wall, and the air intake cone includes ribs arranged circumferentially, and the distance between the ribs and the inner wall is 0.8-1.2 mm.

6. The outdoor hair dryer according to claim 4, characterized in that: The fan comprises a first annular concave surface, and the air inlet cone abuts against the first annular concave surface.

7. The outdoor hair dryer according to claim 6, characterized in that: The fan comprises a second annular concave surface, and the distance between the air inlet cone and the second annular concave surface is 0 to 0.3 mm.

8. The outdoor hair dryer according to claim 7, characterized in that: The conical surface includes a groove configured to disassemble and assemble the intake cone.

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