CN202531450U

CN202531450U - Direct-current variable-frequency fan

Info

Publication number: CN202531450U
Application number: CN2012200888264U
Authority: CN
Inventors: 余许全
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-09
Filing date: 2012-03-09
Publication date: 2012-11-14
Anticipated expiration: 2022-03-09

Abstract

The utility model discloses a direct-current variable-frequency fan. The direct-current variable-frequency fan comprises a bracket, wherein a motor is arranged on the bracket; the motor comprises a stator winding, a permanent magnet rotor and a rotary shaft; fan blades are connected to the rotary shaft; the motor is a variable-frequency direct-current motor; the motor is connected with a control circuit board arranged on the bracket; a front bearing seat and a rear bearing seat are arranged on the motor; and the rotary shaft is mounted on the motor through the front bearing seat and the rear bearing seat. According to the direct-current variable-frequency fan, the direct-current variable-frequency motor is adopted as a power source; compared with the conventional alternating-current motor, the direct-current variable-frequency motor has the advantages of low energy consumption and low heat value; and the rotation of the motor is prevented being blocked due to the arrangement of the bearing seats at the same time. The direct-current variable-frequency fan is energy-saving and environment-friendly; the motor cannot be blocked and burned; the use cost can be saved for users; and the potential safety hazard cannot be produced and the conveniences are brought to the life of people at the same time.

Description

A kind of DC frequency-changing fan

Technical field

The utility model relates to a kind of household electrical appliances, particularly a kind of DC frequency-changing fan.

Background technique

Electric fan is people at one of household electric appliance commonly used in summer; Mostly traditional domestic electric fan is ac fan; As power source, energy consumption is bigger during its motor operation with the single phase alternating current asynchronous motor, and power was more than 40W when the AC motor of general domestic electric fan ran well; The power of AC motor is bigger, and it is big to generate heat during operation, and the heat that gathers behind the long-play is not easy to distribute, and has potential safety hazard.Simultaneously, the motor shaft of traditional AC motor is directly installed on the motor, with the bearing shell friction, occurs stuck phenomenon after motor shaft turns round for a long time easily.

Therefore, people adopt the lower direct current generator of power consumption to replace AC motor to serve as the power source of family expenses fan, but the output power of common DC motor is little, and the fan wind-force of its driving is little, can not satisfy people's daily usage requirement.

The model utility content

In order to overcome the deficiency of existing technology, the utility model provides a kind of variable-frequency direct current permanent magnet motor, its less energy consumption, environmental protection and energy saving.

The utility model solves the technological scheme that its technical problem adopted:

A kind of DC frequency-changing fan comprises support, and support is provided with motor; Said motor is made up of staor winding, p-m rotor and rotating shaft; Be connected with fan blade in the said rotating shaft, said motor is the frequency conversion direct current generator, and the motor connection is arranged on the control circuit board on the support; Motor is provided with forward and backward bearing support, and rotating shaft is installed on the motor through forward and backward bearing support.

As the further improvement of technique scheme, said control circuit board is provided with power module and frequency conversion module.

As the further improvement of technique scheme, said support is provided with the oscillator device that the control motor swings, and said oscillator device is the tail tooth case of shaking the head.

As the further improvement of technique scheme, said fan blade is outside equipped with mat.

The beneficial effect of the utility model is: the DC frequency-changing fan of the utility model adopts direct current variable frequency motor as power source, compares with traditional AC motor, and direct current variable frequency motor has low energy consumption, advantage that heating value is few; Its output power can reach the output power effect of traditional AC motor; The situation of motor rotation blockage, the resistance when having reduced fan running, the energy-conserving and environment-protective of the utility model DC frequency-changing fan have been stopped in the setting of the design's bottom bracket simultaneously; Stall and the situation of burning motor can not appear; Can not produce potential safety hazard, the life that is convenient for people to simultaneously for the user practices thrift user cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the enlarged diagram at A place among Fig. 1.

Drawing reference numeral explanation: 1, support, 2, motor, 3, rotating shaft, 4, staor winding, 5, p-m rotor, 6, front-end bearing pedestal, 7, rear bearing block, 8, fan blade, 9, control circuit board, 10, oscillator device.

Embodiment

With reference to Fig. 1, Fig. 2, a kind of DC frequency-changing fan embodiment that the utility model provides comprises support 1; Support 1 is provided with frequency conversion direct current generator 2; Motor 2 is made up of staor winding 4, p-m rotor 5 and rotating shaft 3, and motor 2 is provided with forward and backward bearing

support

6,7, and rotating shaft 3 is installed on the motor 2 through forward and backward bearing

support

6,7; One end of rotating shaft 3 is connected with fan blade 8, and fan blade 8 is outside equipped with mat.Motor 2 connections are arranged on the control circuit board 9 on the support 1, are provided with the frequency conversion module that is used for Ac is converted into galvanic power module and control motor 2 rotating speeds in the said control circuit board 9.Compare with traditional AC motor, direct current variable frequency motor has low energy consumption, advantage that heating value is few, and its output power can reach the output power effect of traditional AC motor, thereby can replace traditional AC motor and be used for the family expenses fan.

Further, said support 1 rear also is provided with the oscillator device 10 that control motor 2 swings, and oscillator device 10 is the tail tooth case of shaking the head.

The design's DC frequency-changing fan adopts direct current variable frequency motor as power source, and its energy consumption contrast traditional AC motor can reduce more than 50%, and the heating value of motor 2 is few, energy-conserving and environment-protective, and the situation of motor 2 stalls has been stopped in the setting of motor 2 upper bearing brackets 6,7.Stall and the situation of burning motor can not appear in the DC frequency-changing fan energy-conserving and environment-protective of the utility model, can practice thrift user cost for the user, can not produce potential safety hazard, the life that is convenient for people to simultaneously.

The above is merely the preferential mode of execution of the utility model, as long as realize that with basic identical means the technological scheme of the utility model purpose all belongs within the protection domain of the utility model.

Claims

1. DC frequency-changing fan; Comprise support (1); Support (1) is provided with motor (2), and said motor (2) is made up of staor winding (4), p-m rotor (5) and rotating shaft (3), is connected with fan blade (8) in the said rotating shaft (3); It is characterized in that: said motor (2) is the frequency conversion direct current generator; Motor (2) connection is arranged on the control circuit board (9) on the support (1), and motor (2) is provided with forward and backward bearing support (6,7), and rotating shaft (3) is installed on the motor (1) through forward and backward bearing support (6,7).

2. a kind of DC frequency-changing fan according to claim 1 is characterized in that: said control circuit board (9) is provided with power module and frequency conversion module.

3. a kind of DC frequency-changing fan according to claim 1 is characterized in that: said support (1) is provided with the oscillator device (10) that control motor (2) swings.

4. a kind of DC frequency-changing fan according to claim 1 is characterized in that: said fan blade (8) is outside equipped with mat.