CN217065617U

CN217065617U - Blower with gravity balance

Info

Publication number: CN217065617U
Application number: CN202123362839.4U
Authority: CN
Inventors: 艾凯明; 李演轶; 肖奋
Original assignee: Shenzhen Fenda Technology Co Ltd
Current assignee: Shenzhen Fenda Technology Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-29
Anticipated expiration: 2031-12-28

Abstract

The utility model belongs to the technical field of domestic appliance, a gravity balance's hair-dryer is provided, include: the air supply device and the heating device are connected to a power supply, and the combined gravity center of the air supply device and the heating device falls on the gravity center line of the shell. Through the overall structure who optimizes the hair-dryer, make the whole focus of hair-dryer fall on the focus line of handle, can overcome the not enough problem of hair-dryer overall structure focus stability, improve hair-dryer overall structure's stability, improve the user and use experience.

Description

Blower with gravity balance

Technical Field

The utility model belongs to the technical field of domestic appliance, especially, relate to a gravity balance's hair-dryer.

Background

As early as 1890, the french engineer Alexander invented the first generation of hair dryers. Later, engineers in various countries continuously innovate in the aspects of structure, motor, blade, heating element, appearance and the like, and develop various different similar household or commercial hair dryers, so that the types of hair dryers in the market are enriched, the performance of the hair dryer is improved, and the use satisfaction of users is improved.

The structural design of the traditional hair drier is mature, and the difference lies in the selection of the sizes and materials of parts so as to meet the requirements of different air quantities, air speeds, air temperatures and overall appearance sizes. In the aspect of gravity center balance design, the structural design of the traditional hair dryer usually adopts an empirical method, and the defects that the motor, the heating element and other components are all installed in the main body, a scientific calculation method is not adopted, so that the main body is heavier, the handle is lighter, the gravity center of the hair dryer deviates from the handle too much, the hair dryer is not favorable for a person to hold the handle for a long time, and the use experience of the user is poorer.

Therefore, a blower with a balanced gravity is needed to solve the problem that the gravity center of the blower deviates too much from the handle, which is not favorable for a user to hold the handle for a long time and causes poor user experience.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a gravity balance's hair-dryer, include: the casing, assembly air supply arrangement and heating device in the casing, air supply arrangement set up in the air inlet side of casing, heating device set up in the air-out side of casing, air supply arrangement reaches heating device is connected to the power, air supply arrangement with heating device's combination focus falls on the focus line of casing.

Optionally, the housing is a split structure and is divided into a main body and a handle, the handle is disposed at a lower portion of the main body, and a center of gravity of the main body is located on a center of gravity line of the handle.

Optionally, the air supply device and the heating device are installed in the main body, and the combined gravity center of the air supply device and the heating device is located on the gravity center line of the handle.

Optionally, the air inlet side of the main body is provided with a filter screen, and the combined gravity center of the filter screen and the main body falls on the gravity center line of the handle.

Optionally, the heating device includes a heating frame and a heating wire, and the heating wire is wound on the heating frame.

Optionally, the air supply device includes a motor, a stator, and a rotor, the motor is installed at the front end of the stator, the rotor is installed at the rear end of the stator, the motor is installed at the rear end of the heating frame, and the motor drives the rotor to rotate.

Optionally, the rotor is made of nylon plastic and has a rotational speed of 1.5-1.8 ten thousand revolutions per minute.

Optionally, a PCB circuit board is installed in the handle, and the circuit board is connected with the motor and the heating wire.

Optionally, the air delivery of the rotor is greater than 30L/s.

Optionally, a negative ion generator is further installed in the housing, and the center of gravity of the negative ion generator is located on the center of gravity line of the housing.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a balanced hair-dryer of gravity, through the overall structure who optimizes the hair-dryer, make the whole focus of hair-dryer fall on the focus line of handle, can overcome the not enough problem of hair-dryer overall structure focus stability, improve hair-dryer overall structure's stability, improve user's use and experience.

Drawings

Fig. 1 is a perspective view of a gravity balanced hair dryer of the present invention;

FIG. 2 is a perspective view of another perspective of the gravity balanced hair dryer of the present invention;

FIG. 3 is a schematic front view of a gravity balanced hair dryer of the present invention;

FIG. 4 is a schematic left side view of a gravity balanced hair dryer of the present invention;

FIG. 5 is a schematic cross-sectional view A-A of a gravity balanced hair dryer of the present invention;

fig. 6 is a schematic view of the connection between the air supply device and the heating device of the present invention.

Illustration of the drawings:

10. a blower; 20. an air supply device; 30. a heating device; 200. a housing; 201. a main body; 202. a handle; 203. filtering with a screen; 204. a circuit board; 205. a switch; 206. a heating frame; 207. a heater; 208. a motor; 209. a stator; 210. a rotor; 211. and a negative ion generator.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-6, embodiments of the present invention provide a gravity balanced hair dryer 10 including a housing 200 having a split configuration, where the housing 200 may be formed of stainless steel or PC plastic. The casing 200 is divided into a main body 201 and a handle 202, the main body 201 is formed into a cavity with two through sides, the shape of the cavity is similar to that of a cylinder with an expanded middle, the main body 201 is mainly used for providing an assembly space for the parts of the hair dryer 10 and forming an air duct, wherein the main body 201 takes one end of air inlet as the rear end and one end of air outlet as the front end. The handle 202 is partially connected to the lower part of the main body 201, and the handle 202 is also internally formed into a cavity which is similar to the shape of a middle expanded cylinder, and the cavity of the handle 202 is communicated with the cavity of the main body 201. The main body 201 and the handle 202 are connected to form a structure similar to a T shape, the main body 201 is a T-shaped upper part, and the handle 202 is a T-shaped lower part.

Further, the main body 201 and the handle 202 may be two-half symmetrical structural members combined to form the housing 200, and the two-half symmetrical main body 201 and the handle 202 may be manufactured in an integral molding manner, so that the processing cost may be effectively reduced, and the energy may be saved. In particular, when the main body 201 and the handle 202 are mounted, in order to improve the stability of the center of gravity of the blower 10, the center of gravity of the main body 201 in the vertical direction falls on the center of gravity line of the handle 202 in the vertical direction. Specifically, the vertical center of gravity of the handle 202 is the center of gravity in the axial direction of the handle 202, i.e., the center of gravity of the handle 202 formed in the height direction of the cylinder.

Further, a filter 203 is installed at the rear end of the main body 201, and the filter 203 may be made of stainless steel mesh or painted plain iron mesh. The screen 203 is used to filter air entering the body 201 and prevent bulky or otherwise long contaminants from entering the body 201, causing the blower 10 to malfunction and seriously damaging the blower 10. In particular, when the filter net 203 is installed in cooperation with the main body 201, in order to improve the stability of the center of gravity of the hair dryer 10, it is necessary to consider the influence of the filter net 203 on the center of gravity of the whole hair dryer 10 when the main body 201 and the handle 202 are designed to be connected, and after the filter net 203 is connected to the main body 201, the center of gravity of the combination of the main body 201 and the filter net 203 in the vertical direction falls on the center line of gravity of the handle 202 in the vertical direction.

Further, a PCB 204 may be mounted inside the handle 202, the PCB 204 may be circular or rectangular, the size of the PCB 204 is in the range of 30-40mm, the thickness is about 1mm, and the common material of the PCB is FR-4 epoxy glass cloth laminated board. The circuit board 204 is connected to a power source (not shown) and a switch 205. the switch 205 may be mounted in a central portion of the handle 202. the switch 205 controls the operation of the hair dryer 10. In particular, when the circuit board 204 is mounted within the handle 202, in order to improve the stability of the center of gravity of the blower 10, the mounting position of the circuit board 204 should be selected such that the center of gravity of the handle 202 and the circuit board 204 after assembly falls on the center of gravity line of the handle 202 itself when designing the mounting position of the circuit board 204.

Further, the main body 201 houses the air distribution device 20 and the heating device 30, and both the air supply device 20 and the heating device 30 are connected to a power supply. The air blowing device 20 is located on an air intake side of the main body 201 (i.e., a rear end of the main body 201) for blowing air out of the blower 10; the heating device 30 is located on the air outlet side of the main body 201 (i.e., the front end of the main body 201) and is used for heating air entering the hair dryer 10 to realize the hot air function provided by the hair dryer 10. In particular, when the blower 20 and the heater 30 are mounted, the combined center of gravity of the blower 20 and the heater 30 is located on the center of gravity line of the handle 202.

Further, the heating device 30 includes a heating rack 206 and a heating wire 207, the heating rack 206 is fixedly installed at the front end of the main body 201, the position is close to the air outlet, the heating wire 207 is wound on the heating rack 206, the number of winding turns of the heating wire 207 is 3 or more, and it is ensured that the air is completely heated. The heating rack 206 is in the shape of a multi-piece trapezoidal sheet, the width of the heating rack is in the range of 20-40mm, the length of the heating rack is in the range of 80-120mm, and the thickness of the heating rack is about 1mm, and the width, the length and the thickness of the single heating rack 206 can be selected according to the size of the hair dryer 10. The heating frame 206 may be made of mica sheets, and has good high temperature thermodynamic characteristics, so as to prevent the heating frame 206 from being damaged in a high temperature environment, thereby preventing the failure of the hair dryer 10. The heating wire 207 can be made of iron-chromium-aluminum electrothermal alloy, the diameter of the heating wire is about 0.6mm, and the heating wire 207 has the characteristics of quick temperature rise and stable heating, so that the stable use performance of the hair dryer 10 is guaranteed. The heating wires 207 are uniformly wound on the heating frame 206, the heating wires 207 are connected with a power supply through the switch 205 and the circuit board 204, the switch 205 controls the power supply to be connected with the heating wires 207, the heating wires are rapidly heated, and the air blower 10 sends hot air.

Further, the blower 20 includes a motor 208, a stator 209, and a rotor 210, wherein the motor 208 is mounted at the front end of the stator 209, the rotor 210 is mounted at the rear end of the stator 209, the motor 208 is mounted at the rear end of the heat generating frame 206, and the motor 208 drives the rotor 210 to rotate. Specifically, the motor 208 is a cylindrical high-speed motor, and the rotational speed of the rotor 210 driven by the motor 208 is about 1.5 to 1.7 ten thousand revolutions per minute, which can meet the use requirements of the blower 10. The motor 208 is sized (24-35) × (40-50) mm, and is made of materials primarily stainless steel and copper, and the shape and size of the motor 208 can be adapted to the specifications of the blower 10. The stator 209 and the rotor 210 are both of vane type structures, the diameter of the vane of the rotor 210 is in the range of 25-60mm, and the material can be nylon plastic or stainless steel. The stator 209 has a blade diameter in the range of 30-85mm and may be made of nylon plastic or stainless steel. Preferably, the stator 209 and the rotor 210 are made of nylon plastic by integral molding, so that the manufacturing cost is relatively low, good economic benefits can be obtained, and the requirements of the impeller aerodynamic performance of the stator 209 and the rotor 210 at high rotating speed of the high-speed motor 208 can be met. The rotor 210 can achieve an air delivery rate of more than 30L per second under the high-speed driving of the motor 208, which greatly improves the quality of the blower 10.

Further, the motor 208 can be connected to a power source through the switch 205 and the PCB 204, and the switch 205 controls the motor 208 to start and stop. The motor 208 is activated, the motor 208 drives the rotor 210 to rotate at a high speed, and the blades of the rotor 210 supply air to the air outlet side of the blower 10. In particular, when the stator 209 is attached to the heat generating frame 206 in cooperation with the rotor 210 and the motor 208, the center of gravity of the whole formed by the combination of the stator 209 and the rotor 210 and the whole of the heat generating frame 206 and the heat generating wire 207 on both sides of the motor 208 together with the motor 208 falls on the center of gravity line of the handle 202 in order to improve the stability of the center of gravity of the hair dryer 10.

In some embodiments, the hair dryer 10 further comprises an anion generator 211, the diameter of the anion generator 211 is about 3-6mm, the anion generator 211 can be installed in the cavity of the main body 201 or the handle 202, for example, the specific position of the anion generator 211 can be installed on the inner side of the blades of the stator 209 or on the heating rack 206 or on the upper part of the inner cavity of the handle 202, and the anion generator 211 is connected to the power supply through the switch 205 and the PCB 204. The anion generator 211 can generate a large amount of anions to be mixed in the air, thereby playing a role in protecting hair quality and improving the use experience of users. In particular, in order to improve the stability of the center of gravity of the hair dryer 10 when the anion generator 211 is mounted, it is necessary to design the mounting position of the anion generator 211 so that the center of gravity of the anion generator 211 falls on the center of gravity line of the handle 202 in consideration of the influence of the anion generator 211 on the center of gravity of the handle 202.

Further, in order to better reduce the load feeling when the user uses the hair dryer 10, the center of gravity of the hair dryer 10 coincides with the center of gravity of the handle 202, and the center of gravity of the hair dryer 10 is lower than the center of gravity of the main body 201 in the vertical direction, that is, the center of gravity of the hair dryer 10 is located near the middle of the handle 202.

In some embodiments, in order to enable the overall center of gravity of the hair dryer 10 to fall on the center of gravity line of the handle 202 in the vertical direction, the center of gravity of the internal structure of the hair dryer 10 is calculated by using relevant software, and the installation position is adjusted so that the center of gravity of the hair dryer 10 and the center of gravity of the handle 202 are in the same vertical direction, so that the balance and reliability of the center of gravity of the whole hair dryer 10 are improved, and the user experience is improved.

Specifically, the internal components of the hair dryer 10 include: a filter screen 203, a rotor 210, a stator 209, a motor 208, an anion generator 211, a PCB 204, a heating wire 207, a heating rack 206, and the like. According to the requirements of air volume and air speed, a proper rotor 210, a proper stator 209, a proper motor 208 and a proper filter screen 203 are selected; selecting a proper PCB 204, a heating wire 207 and a heating frame 206 according to the wind temperature requirement; the anion generator 211 is selected as appropriate according to hair care requirements.

Further, according to the design requirement of the blower 10, the air volume of the blower 10 designed this time is greater than 30L/s, the average air speed of the air outlet is greater than 18m/s under the condition of no wind resistance, a centrifugal rotor 210 with a chassis diameter of 60mm is selected, the number of blades of the rotor 210 is 8, the chord length of the top end of each blade is 20mm, the rotor 210 is made of nylon plastic, and the specific gravity of the nylon plastic is 1.14. Here, the specific gravity is a specific gravity of the nylon plastic material with respect to water, and the following specific weight average is a specific gravity with respect to water.

Further, a stator 209 matched with the rotor 210 is selected, the diameter of a hub of the stator 209 is 57mm, the diameter of blades of the stator 209 is 82mm, the number of the blades of the stator 209 is 12, the blades and the hub of the stator 209 are made of nylon plastics, and the specific gravity of the nylon plastics is 1.14. Based on aerodynamic experiments, the optimum rotor 210 and stator 209 spacing is determined.

Furthermore, in order to meet the requirement that the outlet air temperature is 57 ℃, a heating wire 207 meeting the thermal power requirement is selected, the heating wire is made of iron-chromium-aluminum electrothermal alloy, the specific gravity is 8.1, the diameter is 0.6mm, the heating wire is selected to be of a proper length according to the air temperature requirement, and a 70-degree inclined winding mode is adopted.

Further, the heating frame 206 wound and matched with the heating wire 207 is selected, the length of the heating frame is 90mm, the material is selected from high-temperature resistant mica sheets, the thickness of the heating frame is 1mm, and the specific gravity of the heating frame is 3.2.

Further, according to the requirement of the rotation speed of the rotor 210 and the requirement of the energy consumption power of the rotor 210 and the heating wire 207, the motor 208 meeting the requirements of the rotation speed and the power is selected, the shape of the motor is cylindrical, the size of the motor is 30 × 47mm, the total length of the motor is 68mm by adding a rotating shaft, the main materials of the motor are stainless steel and copper, and the specific gravity of the motor is 7.9.

Further, the PCB 204 matched with the motor 208 in size is selected, and is made of an FR-4 epoxy glass cloth laminated board, the thickness of the PCB is 1mm, the PCB is circular in shape, the diameter of the PCB is about 28mm, and the specific gravity of the PCB is 1.8.

Further, according to the requirements of hair care and wind quantity, a reasonable anion generator 211 is selected, and the quantity of released anions is more than 2 x 106pcs/cm ³ The external diameter is 10mm, and the length is 20 mm.

Further, after the internal components are assembled, the main body 201 of the hair dryer 10 is designed, the shape and size of the inner surface of the main body 201 are designed according to the design requirements of the flow passage, and the thickness of the main body 201 is determined to be 3mm according to the structural strength and noise requirements, wherein the main body is made of common PC plastic and has the specific gravity of 1.2.

Further, using inverse design, 3D scanning techniques, a 3D geometric model of the element is obtained and assembled in CREO.

Further, in the 3D modeling software CREO, real quality attributes are given to the assembled internal main components, such as the specific gravity of the rotor 210 and the stator 209 is 1.14, the specific gravity of the motor 208 is 7.9, the specific gravity of the heating rack 206 is 3.2, the specific gravity of the heating wire 207 is 8.1, the specific gravity of the body 201 is 1.2, and the specific gravity of the PCB 204 is 1.8. The center of gravity of the structure above the handle 202 of the blower 10 was solved using the mass center of gravity tool of creo software, and the center of gravity was drawn as shown in fig. 5.

Further, the shell of the handle 202 of the hair dryer 10 is designed by taking the gravity center line as a reference, so that the gravity center line of the handle 202 is overlapped with the gravity center line of the upper part of the hair dryer 10, and the stability and the balance of the whole structure of the hair dryer 10 are improved.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A gravity balanced hair dryer comprising: the casing, assembly air supply arrangement and heating device in the casing, air supply arrangement set up in the air inlet side of casing, heating device set up in the air-out side of casing, air supply arrangement reaches heating device is connected to the power, air supply arrangement with heating device's combination focus falls on the focus line of casing.

2. The gravity-balanced hair dryer of claim 1, wherein the housing is a split structure having a main body and a handle, the handle is disposed at a lower portion of the main body, and a center of gravity of the main body is located on a center of gravity line of the handle.

3. The gravity-balanced hair dryer of claim 2, wherein said air delivery device and said heating device are mounted within said body, and a combined center of gravity of said air delivery device and said heating device is located on a center of gravity line of said handle.

4. The gravity-balanced hair dryer of claim 2, wherein a filter screen is mounted to the air inlet side of the body, and the combined center of gravity of the filter screen and the body falls on the center of gravity line of the handle.

5. The gravity-balanced hair dryer of claim 3, wherein said heating means comprises a heat frame and a heat wire wound around said heat frame.

6. The gravity-balanced hair dryer of claim 5, wherein said air-moving device includes a motor, a stator, and a rotor, said motor being mounted to a front end of said stator, said rotor being mounted to a rear end of said stator, said motor being mounted to a rear end of said heat-generating frame, said motor driving said rotor to rotate.

7. The gravity-balanced blower of claim 6 wherein said rotor is made of nylon plastic and rotates at a speed of 1.5 to 1.8 kilo-revolutions per minute.

8. The gravity-balanced hair dryer of claim 6, wherein a PCB circuit board is mounted within said handle, said circuit board connecting said motor and said heater.

9. The gravity-balanced blower of claim 6, wherein the rotor has an air delivery greater than 30L/s.

10. The gravity-balanced hair dryer of claim 1, further comprising an anion generator mounted within said housing, said anion generator having a center of gravity located on a line of center of gravity of said housing.