CN215685420U

CN215685420U - Handheld hair-dryer

Info

Publication number: CN215685420U
Application number: CN202122082562.3U
Authority: CN
Inventors: 张涛; 周伟军; 张轶; 吴志勇
Original assignee: Suzhou Xiaozaoshu Network Technology Co ltd
Current assignee: Suzhou Xiaozaoshu Network Technology Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-02-01
Anticipated expiration: 2031-08-31

Abstract

The patent relates to the field of household appliances, in particular to a handheld blower, which comprises a shell, wherein the shell is integrally cylindrical, one end of the shell is provided with an air outlet, and the other end of the shell is provided with an air inlet; the capacitance sensing film is arranged at one end close to the air inlet; the circuit board is arranged on one side, close to the air inlet, in the shell and provided with a posture sensor for sensing the posture of the handheld blower; and the controller is arranged on the circuit board and is simultaneously electrically connected with the capacitance sensing film and the attitude sensor so as to control the work of the handheld blower according to signals of the capacitance sensing film and the attitude sensor. The handheld blower can reduce the risk caused by improper placement in the using process or after use, and reduce the fire hazard.

Description

Handheld hair-dryer

Technical Field

This patent relates to the domestic appliance field, especially relates to a handheld hair-dryer.

Background

The hair dryer is a common household appliance in daily life and is mainly used for drying hair or in scenes with drying requirements. In the prior art, the drying device usually comprises a heating device such as a heating wire for improving the air outlet temperature, and the heating device is matched with the fan to improve the drying efficiency.

The blower brings convenience to daily life, and meanwhile, the occurrence rate of fire caused by improper operation in the using process or after use is continuously improved, so that economic loss and even casualties are caused to a certain degree.

SUMMERY OF THE UTILITY MODEL

This patent is just proposed based on prior art's above-mentioned demand, and the technical problem that this patent will be solved provides a handheld hair-dryer and reduces its because of the risk that brings in the use or because of the misoperation after finishing using.

In order to solve the above problem, the technical scheme provided by the patent comprises:

the hand-held hair drier comprises a shell, wherein the shell is integrally cylindrical, one end of the shell is provided with an air outlet, and the other end of the shell is provided with an air inlet; the capacitance sensing film is arranged at one end close to the air inlet; the circuit board is arranged on one side, close to the air inlet, in the shell and provided with a posture sensor for sensing the posture of the handheld blower; and the controller is arranged on the circuit board and is simultaneously electrically connected with the capacitance sensing film and the attitude sensor so as to control the work of the handheld blower according to signals of the capacitance sensing film and the attitude sensor. The controller is through gathering electric capacity response membrane and attitude sensor's data judgement the state of handheld hair-dryer is controlled the handheld hair-dryer under the corresponding state, can effectively promote user's use and experience to reduce because of the fire risk that causes such as misuse or mistake touch.

Preferably, handheld hair-dryer still includes heater strip and fan, the heater strip and the fan all with the controller electricity is connected, and control the work of handheld hair-dryer includes the control the heater strip with the work of fan. The controller is mainly used for controlling the fan and the heating wire in the handheld blower, and the risk existing in the using process of the handheld blower is reduced through the accurate control of the heating wire and the fan.

Preferably, one end of the housing is provided with a vortex chamber, and the interior of the vortex chamber is formed into a hollow structure to form a vortex; the air outlet is arranged on the side wall of the vortex cavity; the heating wire is arranged in the vortex chamber, and the shape of the heating wire corresponds to the inner shape of the vortex chamber.

Preferably, the fan is located the circuit board with between the heater strip, and include air inlet end and air-out end, the air inlet end with the air intake of handheld hair-dryer is linked together, the air-out end with the vortex cavity is linked together.

Preferably, the capacitance sensing film is provided with a capacitor, and the controller judges the holding condition of the hand-held hair dryer according to the collected capacitance value. When the capacitance of the capacitance sensing film reaches a specified threshold value, the handheld blower is considered to be in a held state, and only in the state, the handheld blower can be operated, so that fire caused by operation of the blower in an unmanned holding state can be effectively prevented.

Preferably, the cross section of the housing has a first curvature and a second curvature, the first curvature is a curvature of a side close to the air outlet, the second curvature is a curvature of a side far from the air outlet, and the second curvature is larger than the first curvature.

Preferably, the capacitance sensing film is arranged on one side with the second curvature and is located in an area between the fan and the air inlet.

Preferably, the attitude sensor is capable of detecting a change in the attitude of the hand-held hair dryer, the attitude sensor having a first distance and a first angle, and the attitude of the hand-held hair dryer is considered to be changed when the displacement of the hand-held hair dryer exceeds the first distance and/or the angle of rotation thereof exceeds the first angle. The handheld blower can be operated only under the condition that the posture of the handheld blower is changed, and the arrangement can effectively prevent the blower from operating to cause fire in the static placement state of the blower.

Preferably, the housing of the blower is circular and fits at least a portion of the housing on the side having the first curvature.

Preferably, the fan has a gap with the housing having the second curvature; and a circuit connected with the fan and the heating wire is arranged in the gap. The arrangement can effectively improve the space utilization rate.

Compared with the prior art, this patent adopts above-mentioned technical scheme, through the mutual cooperation of capacitive sensing membrane and attitude sensor, reduces the possibility of taking place the risk, can avoid the possibility of taking place the conflagration ground in the use for the user as far as possible.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a sectional view showing a structure of a hand-held hair dryer according to the present embodiment;

FIG. 2 is an external structural view of a hand-held hair dryer according to the present embodiment;

FIG. 3 is a bottom view of the hand held hair dryer of this embodiment;

fig. 4 is a block diagram of the electrical connections of the hand held hair dryer of this embodiment.

Reference numerals:

1. a housing; 2. a vortex chamber; 3. an air inlet; 4. an air outlet; 5. a capacitive sensing film; 6. a circuit board; 7. a fan; 8. a heating wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.

For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

Example 1

The embodiment provides a handheld blower, and the handheld blower is shown in figures 1-4.

The hand-held hair drier comprises a shell 1, a fan 7, a heating device, a circuit board 6, a capacitance induction film 5 and the like.

The casing 1, the casing 1 is the tube-shape as a whole, the section of thick bamboo can be the drum, approximate drum, oval section of thick bamboo, the curved surface section of thick bamboo similar to circle or ellipse. An air outlet 4 is arranged on the side wall of one end of the shell 1, and an air inlet 3 is arranged on the side wall of the other end. The end face of the end provided with the air inlet 3 is closed, and the interior of the end provided with the air outlet 4 is hollow, so that a vortex chamber 2 is formed.

Because the shell 1 is in a cylindrical shape, the upper part of the shell is closed, the side wall of the shell is provided with an opening, namely the air outlet 4, when the hand-held hair drier runs, air is injected into the shell 1 from the lower part, positive pressure is formed inside the shell and is discharged to the outside, and because the upper end of the shell is closed, the air enters the shell 1 and is discharged to the air outlet 4 of the side wall, and the air flowing mode inside the shell 1 rotates in a vortex mode and flows out.

The vortex chamber 2 is in a capsule shape, and the arrangement can reduce the volume of the handheld blower and increase the pressure to provide larger air volume.

The air outlet 4 is provided on the outer peripheral surface of the one end of the housing 1.

The cross section of the housing 1 has a first curvature and a second curvature, the first curvature is a curvature of a side close to the air outlet 4, the second curvature is a curvature of a side far from the air outlet 4, and the second curvature is larger than the first curvature. So be provided with and do benefit to the gripping of staff, can effectual promotion user's use experience.

When the object is held by the hand, the joints connected with the palm at the tail ends of the fingers are folded, the positions usually have larger curvature relative to other parts of the hand, and when the hair drier is operated by a person, the air outlet of the hair drier deviates from the palm, so that the safety and the operation convenience are facilitated, and the orientation of the hair drier is easy to distinguish when the hair drier is held by the person due to the fact that the curvature of the shell 1 arranged at the two sides of the air outlet 4 is different, and the safety is guaranteed.

Because shell 1 is the tube-shape, when the staff grips completely, is inconvenient with the switch of finger control hair-dryer, can influence user's use and experience, so this patent set up on the handheld hair-dryer capacitance induction membrane 5 and attitude sensor, it is right to realize through the sensor the control of handheld hair-dryer promotes user's use and experiences, makes its more convenient right the behavior of handheld hair-dryer is controlled, reduces the risk that causes the conflagration.

And the fan 7 is used for providing power for the handheld blower. The fan 7 is located the circuit board 6 with between the heater strip 8, and include air inlet end and air-out end, the air inlet end with the air intake 3 of handheld hair-dryer is linked together, the air-out end with vortex cavity 2 is linked together. The fan 7 injects gas into the vortex chamber 2 to form a vortex.

The shell 1 of the fan 7 is cylindrical, and at least part of the shell is attached to the shell 1 with the first curvature; therefore, the motor can be fixed without extra space while wiring, and the stable position of the fan can be kept by utilizing the change of the curved surface of the shell 1.

In this embodiment, a lead is disposed in the gap to connect electrical components at two ends of the fan 7. Further, the blower 7 is electrically connected to the circuit board 6. The space can be effectively saved by arranging the conducting wire in the gap, and the space utilization rate inside the handheld blower is greatly improved.

A heating device including a frame and a heating wire. The frame is in a shape adapted to the vortex chamber. The heating wire is wound around the frame in a certain direction, the winding shape is matched with the shape of the vortex chamber 2, and the gas can be heated while forming a vortex in the vortex chamber 2.

The circuit board 6 is arranged on one side, close to the air inlet 3, inside the shell 1, and the circuit board 6 is provided with a controller.

The controller is respectively electrically connected with the fan 7 and the heating wire 8.

The controller is electrically connected with the capacitance sensing film 5 and the attitude sensor respectively.

The electric capacity response membrane and attitude sensor can guarantee to be in the reset after handheld hair-dryer shuts down starts accurate going on, reduces because of the misoperation makes handheld hair-dryer causes the possibility of conflagration.

The electric capacity response membrane 5, the electric capacity response membrane 5 is used for receiving the user in the use hand to the contact condition of handheld hair-dryer, and when it reaches certain degree, the controller is to fan 7 and the control that heater strip 8 responded.

The capacitance sensing film 5 is arranged on one side close to the air inlet 3. In this embodiment, the capacitance sensing film 5 is a metal conductive device having ductility connected to the circuit board 6, and may be a conductive material having conductivity, such as a copper foil or an aluminum foil.

Further, the controller collects the capacitance value of the capacitance sensing film in real time, and when the capacitance value reaches a certain value, the controller determines that the handheld blower is held at the moment.

The utility model discloses a handheld hair-dryer, including the handheld hair-dryer, the electric capacity response membrane 5 is in the bottom with the certain distance is reserved at 3 tops of air intake, can prevent effectively that the user from holding when using this handheld hair-dryer, for holding as far as possible 5 position of electric capacity response membrane and cover 3 covers 3 air intake 3 easily makes handheld hair-dryer temperature rises rapidly and causes the inside harm of handheld hair-dryer can lead to user's hand scald even, and more serious can cause the conflagration.

The top of the capacitance sensing film 5 and the bottom of the fan 7 are reserved with a certain distance, on one hand, the vibration of the fan 7 during operation flows out a certain space, and on the other hand, the heat generated during the operation of the fan 7 is effectively prevented from affecting the capacitance sensing film 5 to a certain extent, so that the sensing result of the capacitance sensing film 5 is inaccurate.

Further, the capacitance sensing film 5 is malleable and can be bent. The capacitance sensing film 5 is arranged on one side with the second curvature and has the second curvature.

Further, the capacitance sensing film 5 is formed on the outer side of the housing or on the inner side of the housing. If the handheld blower is arranged on the outer side of the shell, whether the handheld blower is held or not can be detected more sensitively, and the improvement of sensitivity is facilitated, so that a user has better use experience; if the capacitor induction film 5 is arranged on the inner side of the shell, the service life of the capacitor induction film 5 can be prolonged, and the capacitor induction film 5 can be effectively protected from being damaged when the capacitor induction film is arranged inside the shell 1. Further increasing the service life of the hand-held hair dryer.

When the capacitance sensing film 5 is disposed inside the housing 1, the capacitance sensing film 5 may be disposed closely to the inner wall of the housing, or may be disposed at a position having a certain distance from the housing 1. It is noted that the closer the distance between the capacitance-sensitive membrane 5 and the inner wall of the housing, the better.

The capacitance sensing film 5 is arranged close to the inner wall of the shell, so that the sensitivity of the capacitance sensing film is ensured, and the capacitance sensing film is protected from being interfered and damaged by the outside.

The distance between the capacitance sensing film 5 and the inner wall of the housing is made as close as possible because the sensitivity of the capacitance sensing film 5 is related to the distance between the capacitance sensing film 5 and its trigger part and the medium, and the closer the distance, the higher the sensitivity.

This embodiment compromise user's experience and the quality and the life of handheld hair-dryer, will capacitive sensing membrane 5 is hugged closely the shell inner wall is placed.

In another embodiment of this embodiment, the capacitive sensing film 5 surrounds the outer side of the housing for a circle, that is, when the hand-held hair dryer can be held from any direction, the capacitive sensing film 5 can be triggered, so that the hand-held hair dryer operates.

The attitude sensor is a high-performance three-dimensional motion attitude measurement system based on a micro-motor system technology. The system comprises auxiliary motion sensors such as a three-axis gyroscope, a three-axis accelerometer, a three-axis electronic compass and the like, outputs calibrated angular velocity, acceleration, magnetic data and the like through an embedded low-power-consumption ARM processor, measures the motion attitude through a sensor data algorithm based on quaternion, and outputs zero-drift three-dimensional attitude data expressed by quaternion, Euler angle and the like in real time.

In this embodiment, the attitude sensor is a gyroscope.

And the attitude sensor is arranged on the circuit board 6 and used for monitoring the attitude of the handheld blower.

The posture of the hand-held hair dryer comprises position change and rotation angle change.

In the present embodiment, the attitude sensor is provided with a first distance and a first angle. When the displacement of the handheld blower reaches a first distance or the rotation angle of the handheld blower reaches a first angle, the controller controls the handheld blower to make a corresponding response.

The first distance and the first angle are set in the attitude sensor to reduce false triggering of the handheld blower and prevent the change of the working state of the handheld blower caused by slight position change or angle change. Frequent changes in the operating state of the handheld hair dryer can reduce the service life of the handheld hair dryer, accelerate damage of the handheld hair dryer and influence the use experience of a user, and meanwhile reduce the fire risk caused by false triggering.

In this embodiment, the controller controls the operation state of the handheld fan by analyzing and judging the data acquisition results of the capacitive sensing film 5 and the attitude sensor.

Further, when the capacitance value of the capacitance sensing film 5 acquired by the controller exceeds a preset threshold value, it indicates that the handheld blower is in a held state at this time, in this case, the posture sensor monitors that the displacement of the handheld blower exceeds a first distance or the rotation angle of the handheld blower exceeds a first angle, it indicates that the handheld blower is in a held and moved state at this time, and it can be determined that the user is to use the handheld blower, the handheld blower starts to operate, that is, the blower 7 is turned on, and the heating wire 8 starts to heat.

Further, the controller controls the operation of the hand-held hair dryer only when the capacitance value of the capacitance sensing film 5 exceeds a preset threshold value and the attitude sensor detects that the hand-held hair dryer moves a first distance or rotates a first angle.

Under other conditions, namely, when only the capacitance value of the capacitance sensing film 5 exceeds the preset threshold value, or only the gesture sensor monitors that the displacement of the handheld blower exceeds the first distance or the rotation angle exceeds the first angle, or the capacitance value of the capacitance sensing film 5 does not exceed the preset threshold value and the gesture sensor does not monitor the displacement and the angle rotation of the handheld blower, the handheld blower does not operate. The arrangement improves the safety of the handheld blower and reduces the risk of fire caused by accidental touch or other reasons.

When the user suspends the use of the handheld blower, the controller detects that the capacitance of the capacitance sensing film 5 is lower than the threshold value, or the gesture sensor does not detect that the gesture of the handheld blower is changed, the handheld blower operates for a short time. If the capacitance sensing film 5 and the attitude sensor are not changed in the period, the controller controls the handheld blower to stop working; if the capacitance sensing film 5 and the attitude sensor are changed during the period, the hand-held hair dryer will continue to work.

It should be noted that, in this embodiment, the controller controls the blower and the heating wire by collecting data of the capacitance sensing film and the attitude sensor, and the control is performed in a state where the hand-held hair dryer is stopped, that is, the hair dryer is already running, and the use of the hair dryer is interrupted for some reason, the hair dryer does not work any more, but the hand-held hair dryer and the power supply are still in an electrically connected state.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.

Claims

1. A hand held hair dryer, comprising:

the air conditioner comprises a shell, a fan blade and a fan blade, wherein the shell is integrally cylindrical, one end of the shell is provided with an air outlet, and the other end of the shell is provided with an air inlet;

the capacitance sensing film is arranged at one end close to the air inlet;

the circuit board is arranged on one side, close to the air inlet, in the shell and provided with a posture sensor for sensing the posture of the handheld blower;

and the controller is arranged on the circuit board and is simultaneously electrically connected with the capacitance sensing film and the attitude sensor so as to control the work of the handheld blower according to signals of the capacitance sensing film and the attitude sensor.

2. A hand held hair dryer as claimed in claim 1, further comprising a heater strip and a blower, both of which are electrically connected to said controller, controlling operation of said hand held hair dryer comprising controlling operation of said heater strip and said blower.

3. A hand held hair dryer as claimed in claim 2, wherein one end of said housing is provided with a vortex chamber formed as a hollow structure therein to form a vortex; the air outlet is arranged on the side wall of the vortex cavity; the heating wire is arranged in the vortex chamber, and the shape of the heating wire corresponds to the inner shape of the vortex chamber.

4. The hand-held hair dryer of claim 3, wherein the blower is located between the circuit board and the heating wire and comprises an air inlet end and an air outlet end, the air inlet end is communicated with an air inlet of the hand-held hair dryer, and the air outlet end is communicated with the vortex chamber.

5. The hand-held hair dryer of claim 1, wherein the capacitance sensing film is a capacitor, and the controller determines the holding condition of the hand-held hair dryer according to the collected capacitance value.

6. A hand held hair dryer as claimed in claim 4, wherein said housing has a cross-section having a first curvature on a side thereof adjacent said outlet opening and a second curvature on a side thereof remote from said outlet opening, said second curvature being greater than said first curvature.

7. The hand held hair dryer of claim 6, wherein said capacitive sensing film is disposed on a side of said second curvature in a region between said blower and said air inlet.

8. A hand held hair dryer as claimed in claim 1, wherein said attitude sensor is capable of detecting a change in attitude of said hand held hair dryer, said attitude sensor having a first distance and a first angle, said hand held hair dryer attitude being considered to change when said hand held hair dryer is displaced beyond said first distance and/or rotated beyond said first angle.

9. A hand held hair dryer as claimed in claim 6, wherein said blower housing is circular to conform to at least a portion of the housing on the side having the first curvature.

10. A hand held hair dryer as claimed in claim 6, wherein said blower has a gap with the housing having the second curvature; and a circuit connected with the fan and the heating wire is arranged in the gap.