High speed noise reduction hair dryer

The invention relates to the technical field of small household appliances, in particular to a high-speed noise-reducing hair dryer.

Hair dryers are commonly used household appliances, mainly used for drying and shaping hair, and can also be used for local drying, heating and treatment in laboratories, physiotherapy rooms, industrial production, art, etc., and are widely used. In particular, hot hair dryers are used for a variety of purposes, such as drying materials (such as paint and hair), and cleaning or stripping surface layers.

Existing hair dryers can be roughly divided into two types according to the different air inlet locations:

One is the rear-intake hair dryer, in which the motor assembly is located at the rear end of the hair dryer body and air is sucked in from the rear end. The sucked air is heated by the heating assembly at the front end of the hair dryer body and then flows out of the body, or flows out after passing through an additional air nozzle. Traditional hair dryers mostly use this air intake method, but due to the influence of the central motor assembly and heating assembly, the central flow velocity of the airflow in the hair dryer is slow and the temperature is high, which brings disadvantages such as poor user experience and reduced life of the motor assembly and heating assembly.

The second is a handle-type air intake hair dryer. The motor assembly of this type of hair dryer is located inside the handle and inhales air from the bottom of the handle. After the inhaled air passes through the handle, the fluid path is turned and enters the hair dryer body. It is heated by the heating component on the hair dryer body and then flows out of the body, or flows out after passing through an additional nozzle. Most existing high-speed hair dryers use this air intake method, which not only effectively increases the flow rate of the inhaled air flow, but also has a suitable temperature, which can well avoid damage caused by high temperature. This type of hair dryer is most famous for the products of Dyson Technology Co., Ltd., and has become popular all over the world in recent years.

Prior art example 1, referring to patent document CN104273920B, the applicant Dyson Technology Co., Ltd. discloses a hair care appliance, including a handle, the handle including a wall and an outer wall, wherein the wall defines a main fluid flow path extending from the main fluid inlet into the appliance and the outer wall is the outer surface of the appliance. The outer wall may extend substantially continuously around the wall and along the wall. An isolation layer may be provided between the wall and the outer wall, the isolation layer may be substantially around and along the wall, and may reduce one or more of the noise, vibration and heat generated by the appliance. The handle may include a fan unit for sucking fluid into the main fluid flow inlet and traveling along the main fluid flow path. Through the description and drawings of Example 1, it can be inferred without doubt that in the hair care appliance, the motor is placed vertically in the handle, the air enters from the annular hole at the lower end of the handle, enters the handle after turning 90 degrees, enters the body after turning 90 degrees, and finally sprays out from the front end of the body. Its defects are: 1. During the movement of airflow, it needs to go through multiple large-angle turns of 90 degrees or close to 90 degrees, which will cause a lot of turbulence and lead to a decrease in air outlet speed; 2. Due to the large-angle turns, the airflow will directly and continuously impact the handle and body, resulting in a large noise. The recorded test value is 82 db; 3. The motor is set in the handle, and the user holds the handle to use it. In the absence of a good buffer structure, long-term use can easily cause discomfort in the hand.

Prior art example 2, referring to patent document U.S. Pat. No. 11,730,245B2, the applicant Lake Electric Co., Ltd. discloses a hair dryer with high heat dissipation efficiency, which belongs to the field of household appliance technology and is designed to solve the problems of poor heat dissipation effect of existing hair dryer motors. The hair dryer with high heat dissipation efficiency of the present invention comprises a body and a heating device arranged in the body, an air duct is formed in the body, and also comprises a heat dissipation device made of heat-conductive material, the heating device is located outside the air duct, and the heat dissipation device is thermally connected to the heating device and is at least partially arranged in the air duct. The hair dryer with high heat dissipation efficiency of the present invention can use cold wind such as natural wind whose temperature is lower than that of the heat dissipation device to take away the heat on the heat dissipation device, thereby achieving the effect of heat dissipation for the heating device, and solving the problem that the main control board in the existing hair dryer cannot dissipate heat well. Through the content description and drawings of Example 2, it can be inferred without doubt that the hair dryer has a motor arranged horizontally in the upper body to form a nearly linear air duct from back to front, and its recorded test value is 75 db, and there is also a defect of relatively large noise in use.

In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a high-speed noise-reducing hair dryer.

The technical solution of the present invention to solve the technical problem is: a high-speed noise reduction hair dryer, comprising:

The air duct housing has an air inlet at one end and an air outlet at the other end;

A handle housing is mounted on the lower end of the hair dryer housing, and a button assembly is provided on the handle housing;

A high-speed motor is connected to a guide fan blade, and the high-speed motor drives the guide fan blade to rotate, so that the guide fan blade draws in external air through the air inlet and then blows it out through the air outlet;

A noise reduction and flow guiding mechanism is arranged in the air cylinder housing, the noise reduction and flow guiding mechanism forms an internal air duct, and the air inlet is connected to the air outlet through the internal air duct;

A circuit board assembly that is electrically connected to electrical components within the hair dryer;

The noise reduction and flow guiding mechanism includes the following components from the air inlet to the air outlet:

An air intake grille, on which a plurality of air intake holes are provided;

The air guide bracket has an inner circle area and an outer ring area, an air intake area is formed between the inner circle area and the outer ring area, a plurality of first dividing ribs are arranged in the circumferential direction in the air intake area, and independent transverse air intake wind tunnels are formed between adjacent first dividing ribs; the edge of the inner circle area protrudes forward to form a front convex portion, a plurality of second dividing ribs are arranged at the front end of the front convex portion, and independent vertical air intake wind tunnels are formed between adjacent second dividing ribs;

A honeycomb air inlet support, wherein the middle area thereof protrudes toward the air outlet to form a rear concave portion, the rear concave portion is provided with honeycomb holes, and the outer area of the honeycomb holes forms a front convex closed portion;

The air guide bracket and the honeycomb air intake bracket overlap each other, and the projections of the front convex part and the rear concave part in the vertical direction partially overlap, thereby forming an S-shaped rotary air duct;

A motor bracket, which is connected to the front end of the rear concave portion and communicates with the honeycomb hole, and the high-speed motor is installed in the motor bracket;

An air duct support, which is located at the front end of the motor support and at least partially extends into the motor support, and an arc-shaped air duct that spreads from the inside to the outside is formed between the air duct support and the motor support;

The converging air outlet bracket is arranged between the air duct bracket and the air outlet, and has a converging air duct which is larger at the back and smaller at the front, and a heating component is arranged in the converging air duct.

In the direction setting of the local structure of the present invention, the high-speed motor is arranged horizontally, and the air inlet, high-speed motor, internal air duct and air outlet are arranged in the same direction.

The preferred structure of the motor bracket is that the motor bracket includes a small diameter section and a flow expansion section;

The high-speed motor is installed in the small-diameter section, and a first shock-absorbing rubber pad is arranged between the high-speed motor and the inner wall of the small-diameter section;

The air duct support at least partially extends into the flow expansion section.

The preferred structure of the air duct support is that the air duct support includes a central arc air guide portion and a plurality of wind-fixing wings evenly distributed on the central arc air guide portion, and the outer ends of the wind-fixing wings extend out of the central arc air guide portion and extend into the concentrated air outlet support;

At least two adjacent fixed wind wings are provided with a connected mounting portion, a slot is provided on the mounting portion, a buckle is provided on the inner wall of the expansion section, and the buckle is embedded in the slot so that the air duct bracket and the motor bracket are assembled together.

The preferred arrangement of the circuit board assembly is that the expansion section of the motor bracket further extends backward to form a circuit board bracket section, an electric control chamber is formed between the circuit board bracket section and the honeycomb air intake bracket, the circuit board assembly is arranged in the electric control chamber, and a first wire hole connected to the handle housing is provided below the electric control chamber, so that a first cable is passed through the first wire hole to electrically connect the circuit board assembly with the button assembly.

Regarding the heat dissipation structure of the circuit board assembly, at least one return air hole is opened on the expansion section of the motor bracket, and the return air hole is connected to the electric control chamber;

The edge of the return air hole extends inwardly to form a guide portion, and the guide portion at least partially extends into the arc-shaped air duct.

A further structure of the motor bracket is that the small diameter section of the motor bracket includes a first body and a second body, the first body is integrally formed with the flow expansion section, and the second body is independently formed and detachably connected to the first body.

The preferred fixing method for the circuit board assembly is that a plurality of positioning ribs are provided on the outer wall of the small diameter section, and a plurality of positioning grooves are provided on the circuit board assembly, and the positioning ribs can be inserted into the positioning grooves to assemble the circuit board assembly on the small diameter section of the motor bracket.

Another functional solution of the present invention is that a display screen assembly is provided at the rear end of the air duct shell, and a second wire hole is opened on the honeycomb air intake bracket, so that a second cable is passed through the second wire hole to electrically connect the circuit board assembly with the display screen assembly.

In the present invention, a heat insulation bracket is arranged between the concentrated air outlet bracket and the air duct bracket, and a heat insulation chamber is formed between the heat insulation bracket and the front end of the concentrated air outlet bracket. A negative ion generator is arranged in the heat insulation chamber. The negative ion generator is electrically connected to the circuit board assembly through a third cable, and the release end of the negative ion generator extends out of the heat insulation chamber and extends into the concentrated air duct.

Regarding the preferred structure between the honeycomb air intake bracket and the wind duct shell, the outer edge of the closed portion of the honeycomb air intake bracket is folded backward to form a edging portion, and the edging portion surrounds the outer ring area of the guide bracket, and a second shock-absorbing rubber pad is arranged between the edging portion and the inner wall of the wind duct shell.

The preferred structure between the honeycomb air intake bracket and the motor bracket is that a sealing ring is provided between the rear recess of the honeycomb air intake bracket and the small-diameter section of the motor bracket.

Preferably, the heating assembly has a plurality of heating plate groups, and the heating plate groups correspond one-to-one to the wind-fixing wings.

The preferred matching mode of the air cylinder housing and the handle housing is that the lower end of the air cylinder housing extends downward to form an inner housing portion of the handle, and the inner housing portion of the handle is inserted into the handle housing.

In the present invention, the button assembly is electrically connected to an external power source via a fourth cable.

The beneficial effects of the present invention are:

Second, the high-speed motor is arranged horizontally, and the air inlet, high-speed motor, internal air duct and air outlet are arranged in the same direction. Even if the air outlet, internal air duct and air inlet are in a straight line, compared with the solution where the high-speed motor is arranged in the handle housing, the loss of wind speed and air volume can be greatly reduced, and accordingly the effect of reducing power consumption can be achieved.

Fourth, by setting the return air hole, part of the airflow in the motor expansion section can be introduced into the electric control chamber through the return air hole, and the airflow in this stage has not passed through the heating component. Therefore, the airflow with a lower temperature can effectively dissipate heat for the circuit board assembly in the electric control chamber, reduce the temperature of the circuit board assembly, and enable it to operate continuously and stably for a long time.

In the figure:, air cylinder housing;, handle inner housing;, air inlet;, air outlet;, handle housing;, button assembly;, fourth cable;, high-speed motor;, noise reduction and flow guide mechanism;, air intake grille;, air intake holes;, flow guide bracket;, inner circle area;, front convex part;, outer ring area;air intake area;, the first a partition rib;transverse air intake tunnel;, second partition rib;vertical air intake tunnel;, honeycomb air intake bracket;, rear concave portion;, honeycomb hole;, closed portion;, hemming portion;, second shock-absorbing rubber pad;, second wire hole;, second wire cable;, motor bracket;, small diameter section;, first body portion;. Second body;. Positioning rib;. Flow expansion section;. Buckle;. Return air hole;. Drainage section;. First shock-absorbing rubber pad;. Circuit board bracket section;. Electric control chamber;. First wire hole;. First cable;. Sealing ring;. Air duct bracket;. Central arc air guide section;. Fixed air wing;, installation part;, card slot;, focusing air outlet bracket;, thermal insulation bracket;, thermal insulation chamber;, negative ion generator;, release end;, third cable;, internal air duct;, S-shaped rotary air duct;, arc-shaped air duct;, focusing air duct;, heating component;, heating plate group;, circuit board assembly;, positioning groove;, display screen assembly.

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Referring toto, a high-speed noise reduction hair dryer comprises: a hair cylinder housing, as one of the main components of the hair dryer housing, one end of which is provided with an air inlet, and the other end of which is provided with an air outlet. A handle housing, as another main component of the hair dryer housing, is installed at the lower end of the hair cylinder housing, and a button assemblyis provided on the handle housing. A high-speed motoris connected to a guide fan blade, and the high-speed motordrives the guide fan blade to rotate, so that the guide fan blade sucks the outside air through the air inletand then blows it out through the air outlet. A noise reduction guide mechanismis mainly used to guide the airflow, and through the lateral transmission of noise, the noise is reduced step by step, and finally the noise of the airflow transmitted from the air outletis reduced. The noise reduction guide mechanismis arranged in the hair cylinder housing, and the noise reduction guide mechanismforms an internal air duct, and the air inletis connected to the air outletthrough the internal air duct. The circuit board assemblyis electrically connected to the electrical components in the hair dryer.

The guide blades are preferably integrated with the high-speed motor, and therefore are not separately shown in the drawings.

Different from the prior art, in the present invention, the noise reduction and flow guiding mechanismincludes the following in sequence from the air inletto the air outlet:

The air intake grille, as the first part of the structure constituting the internal air duct, is provided with a plurality of air intake holes, as shown in, through which external air enters the internal air duct. The air intake holescan filter the air and block large-sized impurities (such as hair, etc.) in the air, so as to provide good protection for the internal air duct. Preferably, the air intake grilleis made of metal, which is hard and stable in shape, and can withstand a large air intake pressure;

The air guide bracket, as the second part of the structure constituting the internal air duct, has an inner circular areaand an outer ring area, with reference toand, wherein an air intake areais formed between the inner circular areaand the outer ring area, wherein a plurality of first dividing ribsare arranged circumferentially in the air intake areaand an independent transverse air intake wind tunnelis formed between adjacent first dividing ribs; the edge of the inner circular areaprotrudes forward to form a front convex portion, and a plurality of second dividing ribsare arranged at the front end of the front convex portion, and an independent vertical air intake wind tunnelis formed between adjacent second dividing ribs. Through the arrangement of the front end of the inner circular area(especially the front convex portion) and the outer ring area, the airflow entering the air guide bracketcan be effectively guided, specifically, the airflow flows transversely for a distance and then turns to vertical flow. Preferably, the inner circular areaadopts an arc-shaped edge to reduce obstruction and form an approximately arc-shaped wind guide structure, which minimizes the loss of wind speed and volume and reduces wind noise. On the other hand, by setting the first dividing riband the second dividing rib, the effect of uniform air flow in each area is achieved;