Low noise hair dryer

Abstract

The utility model relates to a low noise hair dryer, including shell subassembly, fan unit and controlling means, shell subassembly is provided with installation cavity, and with the first air inlet and first air outlet of installation cavity intercommunication, fan unit sets up in the installation cavity, and fan unit includes the first casing of two end openings and is located the motor device of first casing, and the first filter screen is arranged between the air inlet end of first casing and the first air inlet, and the air outlet end of first casing is linked together with the first air outlet, and the first filter screen is equipped with a plurality of air distribution holes, controlling means sets up in the installation cavity and is electrically connected with the motor device. The air is inhaled at the first air inlet when the motor device works, and after the air is through a plurality of air distribution holes of the first filter screen, the big airflow is divided into many small, parallel airflow beams, the airflow is forced to become more orderly when passing through the air distribution hole, reduces the noise caused by the airflow disorder and the blade of motor device to collide, reduces the noise in the use process of high -speed hair dryer, improves user comfort.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a low-noise hair dryer. Background Technology

[0002] High-speed hair dryers, as a new generation of personal care appliances, use ultra-high-speed motors to drive impellers and generate concentrated airflow for rapid hair drying. Compared to traditional AC motor hair dryers, they offer significantly increased airflow, reduced heat damage, and higher energy efficiency. However, with the dramatic increase in motor speed, noise issues have become increasingly prominent, posing a key bottleneck to user experience and product competitiveness. Utility Model Content

[0003] Therefore, it is necessary to provide a low-noise hair dryer to address the problem of excessive noise in existing high-speed hair dryers.

[0004] This application provides a low-noise hair dryer, comprising:

[0005] The housing assembly has a mounting cavity and a first air inlet and a first air outlet communicating with the mounting cavity;

[0006] A fan assembly is disposed in the mounting cavity. The fan assembly includes a first housing with openings at both ends and a motor device disposed in the first housing. A first filter screen is disposed between the air inlet end of the first housing and the first air outlet. The air outlet end of the first housing is connected to the first air outlet. A plurality of air distribution holes are opened on the first filter screen.

[0007] A control device is disposed within the mounting cavity and electrically connected to the motor device.

[0008] This application discloses a low-noise hair dryer, in which a motor is installed in a first housing with openings at both ends. The air inlet of the first housing is connected to the first air inlet of the outer casing assembly, and the air outlet of the first housing is connected to the first air outlet of the outer casing assembly. A first filter screen with multiple air distribution holes is provided between the air inlet of the first housing and the first air inlet. When the motor works, air is drawn in through the first air inlet. After the drawn-in air passes through the multiple air distribution holes of the first filter screen, the large airflow is divided into many small, parallel airflow bundles, which forces the airflow to become more orderly when passing through the air distribution holes. This reduces the noise caused by the collision between the airflow turbulence and the blades of the motor, thereby reducing the noise during the use of the high-speed hair dryer and improving user comfort.

[0009] In one embodiment, an elastic sleeve is provided on the first housing, and the elastic sleeve is fitted around the outer periphery of the first filter.

[0010] In the low-noise hair dryer described above, the first filter is mounted on the first housing via an elastic sleeve. Since the motor device vibrates during operation, if the first filter and the first housing are rigidly connected, it will not only amplify the noise of the motor device, but also generate new noise sources due to its own resonance.

[0011] In one embodiment, the elastic sleeve is made of rubber.

[0012] In the low-noise hair dryer described above, the elastic sleeve is made of rubber. Based on this, the rubber elastic sleeve can not only fix the first filter to the first housing and provide stable support, but also completely isolate the first housing from the first filter. Because rubber is elastic, it can block the vibration generated by the motor from being transmitted to the first filter, thus preventing the generation of new noise.

[0013] In one embodiment, the elastic sleeve and the first housing are integrally formed.

[0014] In some embodiments, the first filter screen has a circular cross-section, and the elastic sleeve has an annular groove that is adapted to the shape of the first filter screen.

[0015] The low-noise hair dryer in the above embodiment is detachably connected to the first filter screen by means of an elastic sleeve and an annular groove. Based on the elasticity of the elastic sleeve, an interference fit can occur between the elastic sleeve and the annular groove, so that the first filter screen is stably installed on the elastic sleeve and is not easy to fall off. Moreover, the assembly method of fitting the first filter screen with the elastic sleeve through the annular groove is simple and quick.

[0016] In some embodiments, the first filter is made of metal.

[0017] The low-noise hair dryer in the above embodiment uses a metal filter as the first filter. Compared with plastic, the metal filter is less prone to aging and deformation under long-term high temperature or airflow impact, maintains uniform pore spacing, and ensures that the material itself is not prone to abnormal noise due to vibration.

[0018] In one embodiment, the control device is sandwiched between the first filter and the first air inlet.

[0019] In the above embodiment, the low-noise hair dryer is installed between the first filter and the first air inlet by a control device. The motor device operates at the first air inlet to draw in air. The air drawn into the mounting cavity flows through the control device and is then transmitted to the motor device. In this process, forced air cooling of the control device is achieved, which improves the service life of the electronic components in the control device. In addition, based on this spatial distribution, the control device can be kept away from the motor device and the heating device, reducing the temperature rise of the control device.

[0020] In one embodiment, a second filter is provided between the control device and the first air inlet.

[0021] The low-noise hair dryer in the above embodiment has a second filter installed at the first air inlet. The filter can further separate small objects from the outside to prevent foreign objects from entering the installation cavity and causing damage to the control device and / or motor device. It can also filter out dust and other small particles to ensure clean air output.

[0022] In one embodiment, a heating device is provided between the first housing and the first air outlet.

[0023] The low-noise hair dryer in the above embodiment uses a heating device installed between the first housing and the first air outlet. This allows the airflow, accelerated by the motor, to absorb heat through the heating device, thereby generating hot air that is blown out. Based on the spatial distribution of the first air outlet, the heating device, and the first housing, the generated hot air can be prevented from reacting back to the motor and control devices.

[0024] In one embodiment, the mounting cavity is cylindrical in shape, and the first air outlet, the first housing, the control device, and the first air inlet are distributed sequentially from top to bottom on the mounting cavity. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a low-noise hair dryer in one embodiment;

[0026] Figure 2 A cross-section of a low-noise hair dryer in one embodiment. Figure 1 ;

[0027] Figure 3 A cross-section of a low-noise hair dryer in one embodiment. Figure 2 ;

[0028] Figure 4 A cross-section of a low-noise hair dryer in one embodiment. Figure 3 ;

[0029] Figure 5 A schematic diagram of the structure of a wind turbine assembly in one embodiment. Figure 1 ;

[0030] Figure 6 A schematic diagram of the structure of a wind turbine assembly in one embodiment. Figure 2 (Hidden part of the first shell).

[0031] The correspondence between the reference numerals and the component names is as follows:

[0032] 10. Outer shell assembly, 11. Outer cylinder, 12. Inner cylinder, 101. Mounting cavity, 102. First air inlet, 103. First air outlet, 104. Air guide channel, 105. Second air inlet, 106. Second air outlet;

[0033] 20 Fan assembly, 21 First housing, 22 Motor assembly, 211 Elastic sleeve;

[0034] 30 First filter screen, 301 air distribution holes;

[0035] 40 Control device, 50 Second filter, 60 Heating device. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0038] The following describes some embodiments of the low-noise hair dryer of the present invention with reference to the accompanying drawings.

[0039] like Figures 1 to 6 As shown, this embodiment discloses a low-noise hair dryer, including:

[0040] The housing assembly 10 is provided with a mounting cavity 101, and a first air inlet 102 and a first air outlet 103 communicating with the mounting cavity 101;

[0041] The fan assembly 20 is disposed in the mounting cavity 101. The fan assembly 20 includes a first housing 21 with openings at both ends and a motor device 22 disposed in the first housing 21. A first filter screen 30 is disposed between the air inlet end of the first housing 21 and the first air inlet 102. The air outlet end of the first housing 21 is connected to the first air outlet 103. The first filter screen 30 is provided with a plurality of air distribution holes 301.

[0042] The control device 40 is disposed in the mounting cavity 101 and electrically connected to the motor device 22.

[0043] This application discloses a low-noise hair dryer, in which a motor device 22 is installed inside a first housing 21 with openings at both ends. The air inlet end of the first housing 21 is connected to the first air inlet 102 of the outer casing assembly 10, and the air outlet end of the first housing 21 is connected to the first air outlet 103 of the outer casing assembly 10. A first filter 30 is provided between the air inlet end of the first housing 21 and the first air inlet 102. The first filter 30 is provided with multiple air distribution holes 301. When the motor device 22 is working, it draws in air at the first air inlet 102. After the drawn-in air passes through the multiple air distribution holes 301 of the first filter 30, the large airflow is divided into many small, parallel airflow bundles, which forces the airflow to become more orderly when passing through the air distribution holes 301. This reduces the noise caused by the collision between the airflow turbulence and the blades of the motor device 22, thereby reducing the noise during the use of the high-speed hair dryer and improving user comfort.

[0044] The number of air distribution holes 301 can be multiple. For example, the number of air distribution holes 301 is A, where A satisfies: 40≦A≦80. It should be noted that if the number of air distribution holes 301 is too small, the diameter of the air distribution holes 301 will be too large, resulting in a weak noise reduction effect; if the number of air distribution holes 301 is too large, the wind resistance will increase, which will not only affect the blowing effect of the hair dryer, but may even increase the noise.

[0045] In addition, the first filter 30 is kept at a certain distance from the blades of the motor device 22 to avoid contact between the first filter 30 and the blades of the motor device 22. If the first filter 30 is too close to the blades of the motor device 22, it will increase wind resistance and may generate new noise.

[0046] like Figures 5 to 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: an elastic sleeve 211 is provided on the first housing 21, and the elastic sleeve 211 is sleeved on the outer periphery of the first filter screen 30.

[0047] The above embodiment further specifies that the first filter 30 is disposed on the first housing 21 by the elastic sleeve 211. Since the motor device 22 vibrates when it is running, if the first filter 30 and the first housing 21 are rigidly connected, it will not only amplify the noise of the motor device 22, but also generate a new noise source due to its own resonance.

[0048] In addition to the features of the above embodiments, this embodiment further specifies that the elastic sleeve 211 is made of rubber.

[0049] The above embodiments further specify that the material of the elastic sleeve 211 is rubber. Based on this, the rubber elastic sleeve 211 can not only fix the first filter screen 30 on the first housing 21 and provide stable support, but also completely isolate the first housing 21 from the first filter screen 30. Because rubber is elastic, it can block the vibration generated by the motor device 22 from being transmitted to the first filter screen 30, thus avoiding the generation of new noise.

[0050] In addition to the features of the above embodiments, this embodiment further specifies that the elastic sleeve 211 and the first housing 21 are integrally formed structures.

[0051] like Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first filter screen 30 has a circular cross-section, and the elastic sleeve 211 has an annular groove that is adapted to the shape of the first filter screen 30.

[0052] The above embodiments further define that the elastic sleeve 211 is detachably connected to the first filter screen 30 through an annular groove. Based on the elasticity of the elastic sleeve 211, an interference fit can occur between the elastic sleeve 211 and the annular groove, so that the first filter screen 30 is stably installed on the elastic sleeve 211 and is not easy to fall off. Moreover, the assembly method of fitting the elastic sleeve 211 onto the first filter screen 30 through the annular groove is simple and quick.

[0053] Additionally, it should be noted that the first filter 30 and the elastic sleeve 211 can also be connected by means of snap-fit ​​or other methods.

[0054] In addition to the features of the above embodiments, this embodiment further specifies that the first filter 30 is made of metal.

[0055] The above embodiments further specify that the first filter screen 30 is made of metal. Compared with plastic materials, metal filter screens are less prone to aging and deformation under long-term high temperature or airflow impact, maintain uniform pore spacing, and ensure that the material itself is not prone to abnormal noise due to vibration.

[0056] The first filter screen 30 can be made of metals such as stainless steel or galvanized steel. Preferably, the first filter screen 30 is made of stainless steel.

[0057] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the control device 40 is sandwiched between the first filter 30 and the first air inlet 102.

[0058] The above embodiment further specifies that the control device 40 is installed between the first filter 30 and the first air inlet 102. The motor device 22 operates at the first air inlet 102 to draw in air. The air drawn into the mounting cavity 101 flows through the control device 40 and is then transmitted to the motor device 22. In this process, forced air cooling of the control device 40 is achieved, which improves the service life of the electronic components in the control device 40. In addition, based on this spatial distribution, the control device 40 can be kept away from the motor device 22 and the heating device 60, thereby reducing the temperature rise of the control device 40.

[0059] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that a second filter 50 is provided between the control device 40 and the first air inlet 102.

[0060] The above embodiment further specifies that the second filter 50 is located at the first air inlet 102. By setting the filter, small objects from the outside can be further separated to prevent foreign objects from entering the installation cavity 101 and causing damage to the control device 40 and / or motor device 22. It can also filter out small particles such as dust to ensure clean air output.

[0061] The second filter 50 can be made of metal.

[0062] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that a heating device 60 is provided between the first housing 21 and the first air outlet 103.

[0063] The above embodiment further specifies that the heating device 60 is installed between the first housing 21 and the first air outlet 103, so that the airflow accelerated by the motor device 22 absorbs heat through the heating device 60, thereby forming hot air that is blown out. Based on the spatial distribution of the first air outlet 103, the heating device 60 and the first housing 21, the hot air generated can be prevented from reacting back to the motor device 22 and the control device 40.

[0064] like Figures 2 to 4 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the mounting cavity 101 is cylindrical in shape, and the first air outlet 103, the first housing 21, the control device 40 and the first air inlet 102 are distributed on the mounting cavity 101 from top to bottom.

[0065] The outer casing assembly 10 includes an outer cylinder 11 and an inner cylinder 12. An installation cavity 101 is formed inside the inner cylinder 12. An air guide channel 104 is formed between the outer wall of the inner cylinder 12 and the inner wall of the outer cylinder 11. A first air outlet 103 is distributed on the inner cylinder 12, and a second air outlet 106 is distributed on the outer cylinder 11.

[0066] When the motor 22 operates in the inner cylinder 12, generating negative pressure to drive airflow from the first air inlet 102 into the mounting cavity 101 and then to the first air outlet 103 for high-speed blowing, a high-pressure air ring will form around the first air outlet 103, creating a pressure difference with the second air outlet 106. Thus, without the need for a motor in the air guide channel 104, air can flow through the second air inlet 105 into the air guide channel 104 and out to the second air outlet 106 under the influence of the high-pressure air ring, achieving dual-channel air delivery and increasing the airflow of the hair dryer. Furthermore, the airflow through the air guide channel 104 is at room temperature, forming a heat-insulating fluid layer. This prevents the heating device 60 from heating the airflow in the mounting cavity 101, which could cause the outer casing 10 to overheat and burn the user. Additionally, the airflow through the air guide channel 104 can exchange heat with the inner cylinder 12, accelerating heat dissipation and cooling the inner cylinder 12, thus extending the service life of the outer casing 10.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A low-noise hair dryer, characterized in that, include: The housing assembly (10) is provided with a mounting cavity (101), and a first air inlet (102) and a first air outlet (103) communicating with the mounting cavity (101). A fan assembly (20) is disposed in the mounting cavity (101). The fan assembly (20) includes a first housing (21) with openings at both ends and a motor device (22) disposed in the first housing (21). A first filter screen (30) is disposed between the air inlet end of the first housing (21) and the first air inlet (102). The air outlet end of the first housing (21) is connected to the first air outlet (103). A plurality of air distribution holes (301) are opened on the first filter screen (30). A control device (40) is disposed in the mounting cavity (101) and electrically connected to the motor device (22).

2. The low-noise hair dryer according to claim 1, characterized in that, An elastic sleeve (211) is provided on the first housing (21), and the elastic sleeve (211) is fitted around the outer periphery of the first filter screen (30).

3. The low-noise hair dryer according to claim 2, characterized in that, The elastic sleeve (211) is made of rubber.

4. The low-noise hair dryer according to claim 2 or 3, characterized in that, The elastic sleeve (211) and the first shell (21) are integrally formed.

5. The low-noise hair dryer according to claim 2, characterized in that, The first filter screen (30) has a circular cross-section, and the elastic sleeve (211) has an annular groove that is adapted to the shape of the first filter screen (30).

6. The low-noise hair dryer according to claim 1, characterized in that, The first filter (30) is made of metal.

7. The low-noise hair dryer according to claim 1, characterized in that, The control device (40) is sandwiched between the first filter (30) and the first air inlet (102).

8. The low-noise hair dryer according to claim 7, characterized in that, A second filter (50) is provided between the control device (40) and the first air inlet (102).

9. The low-noise hair dryer according to claim 1, characterized in that, A heating device (60) is provided between the first housing (21) and the first air outlet (103).

10. The low-noise hair dryer according to claim 1, characterized in that, The mounting cavity (101) is cylindrical in shape, and the first air outlet (103), the first housing (21), the control device (40) and the first air inlet (102) are distributed on the mounting cavity (101) from top to bottom.

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