WO2017088329A1

WO2017088329A1 - Dc brush axial flow hair dryer

Info

Publication number: WO2017088329A1
Application number: PCT/CN2016/077176
Authority: WO
Inventors: 高杰
Original assignee: 常州格力博有限公司
Priority date: 2015-11-25
Filing date: 2016-03-23
Publication date: 2017-06-01
Also published as: CN105370592A

Abstract

A direct current (DC) brush axial flow hair dryer comprises a housing (1) having an air inlet channel (3) provided at one end thereof, and a bypass channel (7) provided therein. A motor (9) is installed in the bypass channel (7). A flow guiding cone (8) is connected and fit to one end of the bypass channel (7) to form an enclosed structure. A ventilation structure (15) is configured at the enclosed structure. The ventilation structure is connected to the inside of a main body of the bypass channel (7) to form an air heat dissipating channel. The DC brush axial flow hair dryer employs a brush motor as the motor (9), which has a reduced cost in comparison to a brushless motor. The motor operates stably, has a high safety coefficient, and is easier to maintain and replace. The heat dissipating channel has an optimized design, increasing heat dissipation efficiency of the motor, and extending a service life of the motor.

Description

DC brushed axial flow hair dryer

Technical field

The invention relates to the field of garden tools, and in particular to the field of hair dryers.

Background technique

At present, the axial flow fan in the market occupies a large market, and it is increasingly favored by users because of its unique small size, high efficiency, low noise, and energy saving.

The axial flow blower is small and almost as large as the air duct. This limits the placement of the motor. At present, the motors on the market are mostly placed inside the duct and are sealed. This is not conducive to the heat dissipation of the motor, thus affecting the service life of the machine; and the current use of the axial flow fan is mostly brushless motor, because the control system of the brushless motor is strict and the price is high, resulting in high price of the fan.

Summary of the invention

The technical problem mainly solved by the present invention is to provide a DC brushed axial flow hair dryer, which can improve the heat dissipation effect of the motor, extend the service life of the motor, is safe and reliable, and has low manufacturing cost.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a DC brushed axial flow hair dryer, comprising: a casing, one end of the casing is provided with a casing inlet duct, and the casing is arranged There is a duct, a duct main body, and a motor is installed in the duct main body, and one end of the duct main body is connected with a guide cone to form a closed structure, and the closed structure is provided with a ventilation structure, The ventilation structure communicates with the interior of the duct body to form a gas heat dissipation channel. A DC brush motor is mounted in the duct, and a fan blade is mounted on one end of the DC brush motor, and a guide cone is mounted on one end of the duct, and an air inlet cover is disposed on an end of the casing. A power supply control unit is further disposed inside the casing, and the battery case is mounted on the casing, and the battery package is electrically connected to the power control unit, and the power control unit is Connected to the DC brush motor control.

In a preferred embodiment of the present invention, the power control unit includes a switch electrically connected in sequence, a battery pack insert holder and a control circuit board, and the battery pack is inserted into the battery pack insert, the control The circuit board is connected to a DC brush motor.

In a preferred embodiment of the present invention, the DC brush motor is connected to the duct by screws, and the blades are mounted on the rotating shaft of the DC brush motor through a knob.

In a preferred embodiment of the invention, the casing is provided with a switch trigger, and the switch trigger is connected to the switch.

In a preferred embodiment of the invention, the venting structure is formed on a flow guiding cone.

In a preferred embodiment of the invention, the venting structure is formed on the duct body.

In a preferred embodiment of the present invention, the ventilation structure includes a plurality of heat dissipation through hole groups, and the plurality of heat dissipation through hole groups are evenly spaced on the flow guiding cone.

In a preferred embodiment of the present invention, the number of the heat dissipation through-hole groups is six, and the heat dissipation through-hole group includes four heat dissipation through holes arranged in an interval.

In a preferred embodiment of the present invention, the heat dissipation through hole includes a plurality of heat dissipation through grooves, and the heat dissipation through grooves are evenly spaced on the flow guiding cone.

In a preferred embodiment of the present invention, the number of the heat dissipation through grooves is six, and the heat dissipation through grooves have a rectangular cross section.

In a preferred embodiment of the invention, the flow guiding cone is connected to the duct body by a snap structure, and the motor is fixedly connected inside the duct body by screws.

The invention has the beneficial effects that the DC brushed axial flow hair dryer of the invention uses a motor as a brush motor, the cost of the brushless motor is lower, the motor runs smoothly, the safety factor is high, the maintenance and replacement is easier, and the heat dissipation duct design is more Optimization, improve the heat dissipation efficiency of the motor and extend the service life of the motor.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained according to these drawings without any creative work, wherein:

1 is a schematic structural view of a DC brushed axial flow blower according to a preferred embodiment of the present invention;

Figure 2 is a front cross-sectional view of the DC brushed axial blower of Figure 1;

Figure 3 is a partial exploded perspective view of the DC brushed axial flow blower shown in Figure 2;

4 is a schematic structural view of a preferred embodiment of a heat dissipation duct of a DC brushed axial flow blower according to the present invention;

Figure 5 is a cross-sectional view of the heat-dissipating duct of the DC brushed axial flow blower shown in Figure 4;

6 is a schematic exploded view showing another preferred embodiment of a heat dissipation duct of a DC brushed axial flow blower;

7 is a schematic structural view of another preferred embodiment of a heat dissipation duct of a DC brushed axial flow blower;

8 is a schematic structural view of another preferred embodiment of a heat dissipation duct of a DC brushed axial flow blower;

The components of the drawings are marked as follows: 1. casing, 2, battery pack, 3, air inlet hood, 4, switch board machine, 5, switch, 6, control circuit board, 7, ducted, 8, diversion Cone, 9, DC brush motor, 10, fan, 11, knob, 12, battery pack insert seat, 13, screw, 15, ventilation structure, 16, cooling through hole, 17, cooling through slot.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiments of the invention include:

Referring to FIG. 1 , a DC brushed axial flow blower includes: a casing 1 , one end of the casing is provided with a casing inlet duct 3 , and a duct 7 is disposed in the casing, and the duct is disposed in the duct A motor 9 is mounted, and one end of the duct is connected with a guiding cone 8 to form a closed structure. The closed structure is provided with a ventilation structure 15 which communicates with the interior of the duct body to form a gas heat dissipation. aisle. A DC brush motor is mounted in the duct, and a fan blade 10 is mounted on one end of the DC brush motor, and a guide cone is mounted on one end of the duct, and an air inlet cover is disposed on an end of the casing. 3. The inside of the casing is further provided with a power control unit, and the battery case 2 is mounted on the casing. The battery pack is electrically connected to the power control unit, and the power control unit is connected to the DC brush motor.

In addition, the power control unit includes a switch 5 electrically connected in sequence, a battery pack holder 12 and a control circuit board 6, and the battery pack 2 is inserted into the battery pack holder 12, and the control circuit board 6 is connected. It is connected to the DC brush motor 9.

Further, the DC brush motor 9 is connected to the duct 7 by a screw 13, and the vane 10 is mounted on the rotating shaft of the DC brush motor 9 via the knob 11.

In addition, the casing 1 is provided with a switch trigger 4, which is connected to the switch 5.

For example 2, referring to FIG. 4 to FIG. 5, the number of the heat dissipation through grooves is six, and the heat dissipation through grooves have a rectangular cross section.

Embodiment 3, referring to FIG. 6 , the ventilation structure is disposed on the flow guiding cone, the ventilation structure includes a plurality of heat dissipation through hole groups, and the plurality of the heat dissipation through hole groups are evenly spaced on the flow guiding cone, The number of the heat dissipation through-hole groups is six, and the heat dissipation through-hole group includes four heat dissipation through holes arranged in a row at intervals.

Embodiment 4, refer to FIG. 7 , the ventilation structure is disposed on the duct body, the heat dissipation through hole includes a plurality of heat dissipation through grooves, and the heat dissipation through grooves are evenly spaced on the flow guiding cone, and the heat dissipation through The number of the grooves is six, and the cross section of the heat dissipation through grooves is rectangular, and the rest is the same as in the first embodiment.

Embodiment 5, referring to FIG. 8 , the ventilation structure is disposed on the duct body, the ventilation structure includes a plurality of heat dissipation through hole groups, and the plurality of heat dissipation through hole groups are evenly spaced on the flow guiding cone, Heat dissipation The number of the hole groups is six, and the heat dissipation through hole group includes four heat dissipation through holes arranged in series at intervals, and the rest is the same as in the first embodiment.

The motor 9 is placed inside the duct main body 7, and the motor 9 and the duct main body 7 are connected and fixed by screws 13, and then the guiding cone 8 is installed, and the guiding cone 8 is connected with the duct main body 7 through the snap structure to form a seal. Device. A heat dissipation through groove or a heat dissipation through hole is formed in the flow guiding cone 8, so that the gas inside the duct body can communicate with the air passage to realize the heat dissipation effect of the motor 9. Similarly, the heat dissipation through groove or the heat dissipation through hole may be formed on the main body of the duct to realize the communication between the gas inside the duct body and the air passage to realize the heat dissipation effect.

The DC brushed axial flow hair dryer of the present invention assembles the DC brush motor 9 into the duct 7 and is fixedly connected by screws 13, and the blade 10 is mounted on the shaft of the DC brush motor 9, and is fixed by the knob 11, which will guide After the flow cone 8 and the duct 7 are connected by the snap structure, they are assembled in the casing main body 1; after the switch 5, the line control board 6 and the battery pack insert 12 are connected according to the wiring diagram, they are also assembled to the casing. In the main body 1, the battery pack 2 is finally connected, and the whole machine can work. The motor of the blower uses a DC brush motor. Although the DC brush motor needs to replace the carbon brush, it is very easy to replace the carbon brush, and the control of the motor is relatively easy. Simple, the motor runs smoothly and the safety factor is high, so the performance of the hair dryer is relatively stable.

Different from the prior art, the DC brushed axial flow hair dryer of the invention can change the motor control, the motor runs smoothly, the safety factor is high, the carbon brush is replaced easily, and the performance is stable.

The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification of the present invention, or directly or indirectly applied to other related technical fields, The same is true of the scope of patent protection of the present invention.

Claims

A DC brushed axial flow hair dryer, including

The casing is provided with a casing inlet duct on the casing, a handle is arranged at the upper end of the casing, and a duct is arranged in the casing.

Motor, motor is DC brush motor;

Duct

It is characterized by:

A DC brush motor is mounted in the duct, and a fan blade is mounted on one end of the DC brush motor, and a guide cone is mounted on one end of the duct, and an air inlet cover is disposed on an end of the casing. One end of the duct body is coupled with a flow guiding cone to form a closed structure, and the closed structure is provided with a ventilation structure, and the ventilation structure communicates with the inside of the duct body to form a gas heat dissipation channel.
The brushless axial flow hair dryer according to claim 1, wherein a power supply control portion is further disposed in the casing; the power control portion includes a switch electrically connected in sequence, a battery pack insert holder, and a control circuit board. The battery is enclosed on a battery pack insert seat, and the control circuit board is connected to the DC brush motor.
The brushless axial flow hair dryer according to claim 1, wherein the DC brush motor is connected to the duct by screws, and the blades are mounted on a rotating shaft of the DC brush motor through a knob.
The brushless axial flow hair dryer according to claim 1, wherein the casing is provided with a switch trigger, and the switch trigger is connected to the switch.
A direct current brushed axial blower according to claim 1 wherein said venting structure is formed on a flow guiding cone.
A direct current brushed axial blower according to claim 1 wherein said venting structure is formed on the ducted body.
The brushless axial flow hair dryer according to claim 5, wherein the ventilation structure comprises a plurality of heat dissipation through hole groups, and the plurality of heat dissipation through hole groups are evenly spaced on the flow guiding cone.
The brushless axial flow hair dryer according to claim 7, wherein the number of the heat dissipation through hole groups is six, and the heat dissipation through hole group comprises four heat dissipation through holes arranged in an interval.
The brushless axial flow hair dryer according to claim 5, wherein the heat dissipation through hole comprises a plurality of heat dissipation through grooves, and the heat dissipation through grooves are evenly spaced on the flow guiding cone.
The brushless axial flow hair dryer according to claim 9, wherein the number of the heat dissipation through grooves is six, and the heat dissipation through grooves have a rectangular cross section.
The brushless axial flow hair dryer according to claim 1, wherein the casing is internally provided with a duct, the duct is provided with a motor, the front end is provided with a flow guiding cone, and the rear end is provided with a fan blade. The fan blade is located at one side of the inlet air duct of the casing, and an air outlet pipe is disposed at a front end of the casing.
The brushless axial flow hair dryer according to any one of claims 1 to 11, wherein the flow guiding cone is connected to the duct body through a snap structure, and the motor is fixedly connected to the inside of the duct body by screws. .