Low-noise high-wind-speed pet hair dryer

Abstract

The utility model discloses a low noise high wind speed pet hair dryer, including outer shell, inner shell, motor, heating frame, the inner shell is equipped with motor chamber, cushion chamber, heating chamber from air inlet end to air outlet end in proper order, cushion chamber diameter is greater than the diameter of motor chamber and the diameter of heating chamber, cushion chamber has large space to hold the air volume, the heating frame is equipped with the motor chamber, the cushion chamber is equipped with the motor chamber. The noise generated by the highest-grade air speed and air volume during the initial starting of the blower is reduced; the outer wall diameter of the motor cavity and the outer wall diameter of the heating cavity are both smaller than the outer wall diameter of the buffer cavity, so that an interlayer annular space is formed between the motor cavity and the cylindrical shell and between the heating cavity and the cylindrical shell, and annular air in the interlayer annular space reduces noise and heat generated in the using process of the motor and the heating frame. And the risk that the user is scalded and the stress response of running noise to the pet are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of pet hair dryers, and in particular to a low-noise, high-speed pet hair dryer. Background Technology

[0002] With the increasing demand for pet care, the market for pet hair dryers is growing. Pet hair dryers are appliances specifically designed for pets, with the core function of safely and efficiently drying their fur while minimizing stress, especially from noise and sudden bursts of high airflow. The design of the air duct in a pet hair dryer directly affects drying efficiency, energy consumption, and pet comfort. Existing air duct structures do not adequately consider noise reduction; the noise generated by the high-speed operation of the fan (typically exceeding 60 decibels) can easily trigger stress reactions in pets. Some models reduce noise by adding sound-absorbing cotton, but this can block the air duct, further reducing airflow and creating a technical contradiction. Furthermore, when a pet hair dryer starts up at its highest speed, the initial airflow increases rapidly, resulting in extremely loud noise during startup, which can also cause stress reactions in pets. During operation, a large amount of heat accumulates in the motor cavity, posing a risk of burns to the user. The collision and friction between the high-speed airflow and the heating wires as the airflow passes over the heating element also generates low-to-mid-frequency noise. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, this utility model provides a low-noise, high-speed pet hair dryer to solve the technical problems of high start-up noise and high operating noise when the high-speed airflow of existing pet hair dryers is running.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a low-noise, high-speed pet hair dryer, comprising an outer shell, an inner shell, a motor, and a heating element. The inner shell is provided with a motor cavity, a buffer cavity, and a heating cavity in sequence from the air inlet end to the air outlet end. The diameter of the buffer cavity is larger than the diameters of the motor cavity and the heating cavity.

[0005] Preferably, a PCBA board is also included, which is mounted on the inner shell wall of the buffer cavity.

[0006] Preferably, one end of the PCBA board is fixedly attached to the side wall of the buffer cavity, and the other end of the PCBA board has a heat dissipation gap with the other side wall of the buffer cavity.

[0007] Preferably, the outer casing has a heat dissipation channel at the corresponding position on the PCBA board.

[0008] Preferably, the inner shell includes an upper inner shell and a lower inner shell, which are fixedly assembled by fasteners to form the inner shell.

[0009] Preferably, the outer shell is cylindrical, and there is a partition annular space between the outer shell and the outer wall of the motor cavity and the outer wall of the heating cavity.

[0010] Preferably, the outer wall of the inner shell is provided with mounting posts or mounting holes, and the blower handle is fixedly connected to the mounting posts or mounting holes through the holes or posts at both ends.

[0011] Preferably, the outer walls of the motor cavity and the heating cavity are provided with annular reinforcing ribs, and the maximum diameter of the annular reinforcing ribs is equal to the inner wall diameter of the outer shell.

[0012] Preferably, the maximum diameter of the annular reinforcing rib is press-fitted with the inner wall of the outer shell to ensure stable operation of the inner shell without deviation.

[0013] Preferably, the outer diameter of the annular reinforcing rib is larger than the outer wall diameter of the buffer cavity.

[0014] Preferably, it also includes an air inlet section having an air inlet honeycomb mesh.

[0015] Preferably, it also includes an air outlet, which includes an air outlet honeycomb mesh and an air outlet nozzle, the air outlet nozzle being connected to the air outlet end of the housing via a knob clip.

[0016] Compared with the prior art, the beneficial effects obtained by this utility model are:

[0017] This utility model discloses a low-noise, high-speed pet hair dryer, comprising a shell, an inner shell, a motor, and a heating element. The inner shell has a motor cavity, a buffer cavity, and a heating cavity arranged sequentially from the air inlet to the air outlet. The diameter of the buffer cavity is larger than the diameters of the motor cavity and the heating cavity, providing a large space to accommodate airflow and reducing the noise generated by the hair dryer at its initial highest speed and airflow. The outer wall diameters of the motor cavity and the heating cavity are smaller than the outer wall diameter of the buffer cavity, forming a ring-shaped space between the motor cavity and the heating cavity and the cylindrical shell. The annular air in the ring-shaped space reduces the noise and heat generated by the motor and the heating element during use, lowering the risk of burns to the user and reducing the stress response of the pet to operating noise.

[0018] Further improvements include fixing the PCBA board to the inner wall of the buffer cavity, which does not affect the gathering and buffering of the working airflow in the buffer cavity, while avoiding the path of the working airflow, reducing the collision between the working airflow and the PCBA board, and further reducing noise; at the same time, the gap between the PCBA board and the side wall of the buffer cavity provides a good heat dissipation channel for the PCBA, reducing the accumulation of heat during operation and better ensuring the service life of the PCBA board.

[0019] Further improvements include the addition of reinforcing ribs to the outer walls of the motor cavity and heating cavity. The outer diameter of the reinforcing ribs is equal to or slightly larger than the inner diameter of the outer shell, forming an interference fit. This prevents the vibration of the inner shell and the collision of the outer shell during high-speed motor operation from causing operating noise. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0021] Figure 1 This is an exploded view of the low-noise, high-speed pet hair dryer of this utility model.

[0022] Figure 2 This is an internal structural diagram of the low-noise, high-speed pet hair dryer of this utility model.

[0023] Figure 3 This is a schematic diagram of the inner shell of the low-noise, high-speed pet hair dryer of this utility model.

[0024] Figure 4 This is a cross-sectional view of the inner shell of the low-noise, high-speed pet hair dryer of this utility model.

[0025] Figure 5 This is a schematic diagram of the overall design of the low-noise, high-speed pet hair dryer of this utility model.

[0026] Reference numerals: 1-Outer shell; 11-Hair dryer handle; 12-Air inlet; 13-Air outlet; 131-Air outlet honeycomb mesh; 132-Air outlet nozzle; 2-Inner shell; 21-Motor cavity; 22-Buffer cavity; 23-Heating cavity; 24-Upper inner shell; 25-Lower inner shell; 26-Reinforcing rib; 27-Partitioned circular space; 3-Motor; 4-Heating frame; 5-PCBA board. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please refer to Figures 1 to 5A low-noise, high-speed pet hair dryer includes a housing 1, an inner housing 2, a motor 3, a heating element 4, and a PCBA board 5. The housing 1 includes an air inlet 12 and an air outlet 13. The air inlet 12 has an air inlet honeycomb mesh, and the air outlet 13 includes an air outlet honeycomb mesh 131 and an air outlet nozzle 132. The air outlet nozzle 131 is engaged with the air outlet end of the housing 1 via a knob-type snap-fit. The main body of the housing 1 is cylindrical, and the diameter of the air outlet end of the housing 1 is larger than the diameter of the air inlet end. The inner housing 2... A motor cavity 21, a buffer cavity 22, and a heating cavity 23 are sequentially arranged from the air inlet to the air outlet. The diameter of the buffer cavity 22 is larger than the diameter of the heating cavity 23, and the diameter of the heating cavity 23 is larger than the diameter of the motor cavity 21. The outer wall of the buffer cavity 22 is close to the inner wall of the main body of the outer shell 1 with a gap of less than 1 mm. The outer walls of the motor cavity 21 and the heating cavity 23 are provided with annular reinforcing ribs 26, the maximum diameter of which is equal to the diameter of the inner wall of the outer shell 1. In another embodiment, the maximum diameter of the annular reinforcing rib 26 is slightly press-fitted to the inner wall of the outer shell 1 to ensure stable operation of the inner shell 2 without deviation, while also ensuring the assembly of the inner and outer shells. The outer diameter of the annular reinforcing rib 26 is larger than the outer diameter of the buffer cavity 22.

[0029] The PCBA board 5 is mounted on the inner wall of the buffer cavity 22. One end of the PCBA board 5 is fixedly attached to the side wall of the buffer cavity 22, and the other end of the PCBA board 5 has a heat dissipation gap with the other side wall of the buffer cavity 22. The height of the PCBA board 5 is less than 1 / 3 of the diameter of the buffer cavity 22. Even though the PCBA board 5 is mounted on the inner wall of the buffer cavity 22, it will not affect the accumulation and buffering of the working airflow in the buffer cavity 22. The PCBA board 5 avoids the path of the working airflow, reducing the collision between the working airflow and the PCBA board 5, and effectively reducing wind resistance and noise. At the same time, the heat dissipation gap between the end of the PCBA board 5 and the side wall of the buffer cavity 22 allows some airflow to pass through the heat dissipation gap, effectively dissipating heat for the large components of the PCBA board 5. The outer shell 1 is provided with a heat dissipation channel at the position corresponding to the PCBA board 5.

[0030] The inner shell 2 includes an upper inner shell 24 and a lower inner shell 25, which are fixedly assembled by fasteners to form the inner shell 2. An annular space 27 is formed between the outer shell 1 and the outer wall of the motor cavity 21 and the outer wall of the heating cavity 23. That is, an annular air space is formed at the corresponding positions of the outer wall of the motor cavity 21 and the inner wall of the outer shell 1, which prevents the heat generated by the operation of the motor 3 from being directly conducted to the outer wall of the outer shell 1. At the same time, the annular air space isolates part of the operating noise of the motor 3, reducing the operating noise of the motor. Similarly, the collision between the high-speed airflow in the heating cavity 23 and the heating frame 4, as well as the heat generated by the heating frame 4, are partially isolated by the presence of the annular air space, reducing the risk of users being burned and the stress response of pets to noise.

[0031] Furthermore, the outer wall of the inner shell 2 is provided with mounting posts or mounting holes. The hair dryer handle 11 is fixedly connected to the mounting posts or mounting holes through the holes or posts at both ends. The hair dryer handle 11 is a U-shaped handle. The outer shell 1 has a through hole for the hair dryer handle 11 to pass through. By using the shielding of the outer shell 1, the connection between the hair dryer handle 11 and the inner shell 2 is not exposed, making the appearance more aesthetically pleasing.

[0032] Furthermore, the heating frame 4 converts electrical energy into heat energy to heat the air flowing through the air duct, providing the heat required for drying pet fur while ensuring a safe and controllable temperature. The heating frame 4 includes a heating wire and a support frame. The heating wire is preferably made of chromium alloy wire (high temperature resistance and long life) or carbon fiber heating element (uniform heating and fast response). The support frame is preferably made of high-temperature resistant plastic (such as PPS) or metal frame (such as aluminum alloy), and must have a balance between insulation and thermal conductivity. The heating wire is preferably configured as a spiral heating wire or a flat heating element. The spiral heating wire is spirally wound along the inner wall of the air duct to increase the heating area and improve heat exchange efficiency. The flat heating element is integrated at the bottom of the air duct and is suitable for scenarios requiring rapid heating (such as short-haired pets). Preferably, a gradient heating design can be adopted, that is, multiple heating units are distributed along the length of the air duct, and the temperature is dynamically adjusted with a PID algorithm (such as low-temperature preheating at the near end and high-temperature rapid drying at the far end). The built-in NTC temperature sensor monitors the air outlet temperature in real time and adjusts the heating power through a PWM signal for temperature control and safety protection. Preferably, an overheat fuse is provided to automatically cut off the power when the temperature exceeds a threshold (such as 60°C) to prevent burns to pets or fires. Preferably, an anti-scalding isolation layer is provided, with a metal mesh or ceramic partition between the heating frame and the air outlet to prevent pets from directly contacting high-temperature components. Preferably, a rapid heat dissipation structure is provided, which accelerates the heat dissipation of the heating frame itself through heat dissipation fins or guide channels to extend its service life.

[0033] Furthermore, the motor 3 drives the fan impeller to rotate, generating a high-speed airflow that delivers heated air to the surface of the pet's fur, simultaneously affecting airflow, air speed, and energy consumption. The motor 3 includes a stator and a rotor. The stator uses stacked silicon steel sheets to form an iron core, with enameled wire wound around it to generate a magnetic field. The rotor uses permanent magnets combined with bearings, rotating under the influence of the stator's magnetic field, thereby driving the fan to rotate. Preferably, a low-vibration structure and a noise-optimized motor are used, employing high-precision bearings and dynamic balancing to reduce vibration transmission during operation and decrease pet stress. Noise optimization is achieved by designing the impeller with helical blades to reduce air turbulence, combined with duct sound insulation materials (such as sound-absorbing cotton) and a double-layered motor cover (combining an inner damping layer and an outer sound insulation layer) to reduce noise propagation.

[0034] Furthermore, the air outlet 13, through the coordinated design of the air outlet nozzle 131, airflow accelerator, and temperature control components, achieves efficient airflow guidance and precise temperature control. The air outlet nozzle 131 adopts a tapered inner wall (inlet to outlet diameter ratio of 3:1 to 5:1), which, together with the guide vanes, eliminates turbulence and gathers the diffused airflow into a high-speed beam. The air outlet nozzle 131 is available in long nozzle, wide nozzle, and anti-fly type, with adjustable angles or integrated fine metal mesh to adapt to different hair care needs. The airflow accelerator utilizes the Venturi effect to increase the wind speed to 20-40 m / s at the throat, combined with a temperature sensor and anti-scalding metal mesh, to ensure that the outlet temperature remains stable within a safe range. Aerodynamic optimization includes a streamlined guide shroud to suppress turbulence, sound-absorbing cotton to reduce noise, and multi-channel coordinated balancing of wind speed and temperature. Innovative designs such as serrated anti-tangling edges, pressure-sensitive dynamic wind speed adjustment, and negative ion / aromatherapy functions enhance the safety and comfort of pets. Maintenance requires regular cleaning of the air outlet, checking for seals, and avoiding high-temperature corrosion.

[0035] The above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments, and many similar modifications are possible. All variations that can be directly derived or conceived by those skilled in the art from the content disclosed in this utility model should be considered within the scope of protection of this utility model.

Claims

1. A low-noise, high-speed pet hair dryer, characterized in that, It includes an outer shell (1), an inner shell (2), a motor (3), and a heating frame (4). The inner shell (2) is provided with a motor cavity (21), a buffer cavity (22), and a heating cavity (23) in sequence from the air inlet end to the air outlet end. The diameter of the buffer cavity (22) is larger than the diameter of the motor cavity (21) and the heating cavity (23).

2. The low-noise, high-speed pet hair dryer as described in claim 1, characterized in that, It also includes a PCBA board (5), which is mounted on the inner shell wall of the buffer cavity (22).

3. The low-noise, high-speed pet hair dryer as described in claim 2, characterized in that, One end of the PCBA board (5) is fixedly attached to the side wall of the buffer cavity (22), and the other end of the PCBA board (5) has a heat dissipation gap with the other side wall of the buffer cavity (22).

4. The low-noise, high-speed pet hair dryer as described in claim 2, characterized in that, The outer casing (1) has a heat dissipation channel at the position corresponding to the PCBA board (5).

5. The low-noise, high-speed pet hair dryer as described in claim 1, characterized in that, The inner shell (2) includes an upper inner shell (24) and a lower inner shell (25), which are fixedly assembled by fasteners to form the inner shell (2).

6. The low-noise, high-speed pet hair dryer as described in claim 1, characterized in that, The outer shell (1) is cylindrical, and there is a partition annular space (27) between the outer shell (1) and the outer wall of the motor cavity (21) and the outer wall of the heating cavity (23).

7. The low-noise, high-speed pet hair dryer as described in claim 1, characterized in that, The outer wall of the inner shell (2) is provided with mounting posts or mounting holes, and the blower handle (11) is fixedly connected to the mounting posts or mounting holes through the holes or posts at both ends.

8. The low-noise, high-speed pet hair dryer as described in claim 1, characterized in that, The outer walls of the motor cavity (21) and the heating cavity (23) are provided with annular reinforcing ribs (26), and the maximum diameter of the annular reinforcing ribs (26) is equal to the inner wall diameter of the outer shell (1).

9. The low-noise, high-speed pet hair dryer as described in claim 8, characterized in that, The maximum diameter of the annular reinforcing rib (26) is press-fitted with the inner wall of the outer shell (1) to ensure that the inner shell (2) operates stably without deviation.

10. The low-noise, high-speed pet hair dryer as described in claim 1, characterized in that, It also includes an air outlet (13), which includes an air outlet honeycomb mesh (131) and an air outlet nozzle (132). The air outlet nozzle (132) is connected to the air outlet end of the outer casing (1) by a knob buckle.

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