WO2016062048A1

WO2016062048A1 - Fan

Info

Publication number: WO2016062048A1
Application number: PCT/CN2015/077132
Authority: WO
Inventors: 李应成; 王凤; 张善儿; 雷威; 周浩泉; 刘坤盼; 陈始坤; 刘先军; 曾建华; 向其相; 刘骁; 郭圣珑
Original assignee: 中山大洋电机制造有限公司
Priority date: 2014-10-25
Filing date: 2015-04-21
Publication date: 2016-04-28
Also published as: CN204205831U

Abstract

A fan, comprising a volute (1), a wind wheel (2), and an electric motor (3); the middle of the volute (1) is provided with a cavity (10), and a wind inlet (11) and a wind outlet (12) in communication with said cavity (10); the electric motor (3) is mounted on the volute (1); and the end part of a rotating shaft (31) of the motor (3) extends into the cavity (10) and is connected to the wind wheel (2). The motor (3) is a plastic-sealed motor, and is supported and fixed onto the volute (1) by means of a mounting bracket (4). Using a plastic-sealed motor to replace the PSC motors used in the prior art can effectively reduce production costs, and compared to PSC motors, plastic-sealed motors have the advantages of low temperature rise and a simple production process.

Description

a fan

Technical field:

The utility model relates to a fan.

Background technique:

As shown in Fig. 1, the existing fan A uses a PSC motor B (single-phase asynchronous motor), but the fan A using the PSC motor B has the following disadvantages:

1) The production cost of PSC motor is relatively high, which affects its market competitiveness;

2) PSC motor is prone to occurrence of daytime, disconnection, etc. during the production process, and the process difficulty is relatively large;

3) PSC motor is easily affected by external temperature during operation, especially under the high temperature working environment, the temperature rise of PSC motor seriously affects its operating efficiency, so it has strict requirements on the working environment, which restricts The range of use of fans using PSC motors.

Summary of the invention:

The purpose of the utility model is to provide a fan, which can replace the PSC motor in the existing fan by using a plastic-sealed motor, which can effectively reduce the production cost, and the plastic-sealed motor has the advantages of low temperature rise and simple production process compared with the PSC motor.

The purpose of the utility model is achieved by the following technical solutions:

A fan comprises a volute, a wind wheel and a motor, and a cavity is arranged in the middle of the volute and an air inlet and an air outlet communicating with the cavity are arranged, the motor is mounted on the volute, and the end of the shaft of the motor extends into the The inside of the cavity is connected to the wind wheel, and the motor is a plastic motor.

The above-mentioned outer wall of the plastic sealing motor is provided with a mounting bracket, and the plastic sealing motor is supported by the mounting bracket and fixed on the volute.

The plastic-sealed motor described above comprises a rotating shaft, a rotor assembly, a plastic-sealed stator and an end cover, the plastic-sealed stator comprises a stator core, a coil winding and a plastic-sealed casing, the coil winding is wound and mounted on the stator core, and the plastic-sealed casing is wrapped in the stator Outside the iron core and the coil winding, the rotor assembly is mounted on the rotating shaft, the rotor assembly and the rotating shaft are located inside the plastic sealing stator, and the end cover is installed at the end of the plastic sealing shell, and the two ends of the rotating shaft are supported by the end cover. On the bearing.

The mounting bracket described above comprises a hoop body and a plurality of mounting legs extending downward from the hoop body. The hoop body is sleeved on the outer wall of the plastic motor, and the mounting foot is supported and fixed on the volute.

The mounting foot and the volute described above are locked and fixed together by a bolt and nut mechanism.

There is an interference fit between the hoop body described above and the outer wall of the plastic motor.

The above-mentioned outer wall of the hoop body is extended with an arm, and a capacitor is mounted on the arm.

Compared with the prior art, the utility model has the following effects:

1) The replacement of the PSC motor in the existing fan by the plastic-sealed motor has the following advantages: A) the production cost of the plastic-sealed motor is lower than that of the PSC motor; B) the process difficulty of the production is effectively reduced, the assembly process is reduced, and the breakage is effectively reduced. Line ratio; C) The plastic motor is less affected by external temperature in high temperature operation environment, and the external high temperature is not easily transmitted to the motor body through air; D) In the same performance, the plastic motor has a lower temperature rise than the PSC motor;

2) The mounting bracket comprises a hoop body and a plurality of mounting legs extending downward from the hoop body. The hoop body is set on the outer wall of the plastic sealing shell, the mounting foot is supported and fixed on the volute, the structure is simple, and the plastic sealing motor is easy to install. Firm

3) An arm is extended on the outer wall of the hoop body, and a capacitor is mounted on the arm, the structure is simple, and the installation is convenient and firm.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a perspective view of a conventional fan;

Figure 2 is a perspective view of the fan of the present invention;

Figure 3 is an exploded view of the fan of the present invention;

Figure 4 is a plan view of the fan of the present invention;

Figure 5 is a cross-sectional view taken along line A-A of Figure 4;

Figure 6 is a partial enlarged view of B-B in Figure 5;

Fig. 7 is a structural schematic view of the plastic-sealed motor of the present invention.

detailed description:

The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.

Embodiment 1: As shown in FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6 and FIG. 7, the utility model is a fan, which comprises a volute 1, a wind wheel 2 and a motor 3, in the middle of the volute 1 The air inlet 10 and the air outlet 12 are provided with a cavity 10, and the motor 3 is mounted on the volute 1. The end of the rotating shaft 31 of the motor 3 extends into the cavity 10 and is connected to the wind wheel 2. Together, the motor 3 is a plastic motor. The outer wall of the plastic motor 3 is provided with a mounting bracket 4, and the plastic motor 3 is supported by the mounting bracket 4 and fixed to the volute 1. The plastic motor 3 includes a rotating shaft 31, a rotor assembly 32, a plastic stator 33 and an end cover 34. The plastic stator 33 includes a stator core 331, a coil winding 332 and a plastic housing 333. The coil winding 332 is wound around the stator. On the iron core 331, the plastic casing 333 is wrapped around the stator core 331 and the coil winding 332. The rotor assembly 32 is mounted on the rotating shaft 31. The rotor assembly 32 and the rotating shaft 31 are located inside the plastic stator 33, and the end cover 34 is mounted on the plastic sealing housing 333. At the same time, both ends of the rotating shaft 31 are supported on the bearings of the end cover 34.

The mounting bracket 4 includes a hoop body 41 and four mounting legs 42 extending downward from the hoop body 41. The mounting legs 42 are generally "L" shaped, and the four mounting legs 42 are evenly arranged along the circumferential direction of the hoop body 41. The hoop body 41 is fitted over the outer wall of the molded casing 333, and the mounting feet 42 are supported and fixed to the volute 1. The mounting foot 42 and the volute 1 are locked and fixed together by a bolt and nut mechanism. The bolt and nut mechanism includes a bolt 61 and a nut 62. The bolt 61 is located inside the cavity, and the bolt 61 passes through the volute 1 and the mounting foot 42. Thereafter, the nut 62 is tightened to fix the mounting bracket 4 to the volute 1. An interference fit is formed between the hoop body 41 and the outer wall of the molded outer casing 333. An arm 411 is protruded from the outer wall of the hoop 41, and a capacitor 5 is mounted on the arm 411.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

A fan comprising a volute (1), a wind wheel (2) and a motor, a cavity (10) is opened in the middle of the volute (1) and is provided with an air inlet (11) communicating with the cavity (10) and The air outlet (12), the motor is mounted on the volute (1), and the end of the shaft of the motor extends into the cavity (10) and is connected with the wind wheel (2), wherein the motor is a motor Plastic motor (3).
A fan according to claim 1, characterized in that the outer wall of the plastic motor (3) is provided with a mounting bracket (4), and the plastic motor (3) is supported by the mounting bracket (4) and fixed to the volute (1) on.
A fan according to claim 1 or 2, wherein said plastic motor (3) comprises a rotating shaft (31), a rotor assembly (32), a molded stator (33) and an end cover (34). The molded stator (33) comprises a stator core (331), a coil winding (332) and a plastic casing (333). The coil winding (332) is wound and mounted on the stator core (331), and the plastic casing (333) is wrapped. Outside the stator core (331) and the coil winding (332), the rotor assembly (32) is mounted on the rotating shaft (31), and the rotor assembly (32) and the rotating shaft (31) are located inside the plastic stator (33), and the end cover (34) It is installed at the end of the plastic casing (333), and both ends of the rotating shaft (31) are supported on the bearings of the end cover (34).
A fan according to claim 2, wherein said mounting bracket (4) comprises a hoop body (41) and a plurality of mounting feet (42) extending downward from the hoop body (41), the hoop The body (41) is placed on the outer wall of the plastic motor (3), and the mounting feet (42) are supported and fixed on the volute (1).
A fan according to claim 4, characterized in that the mounting foot (42) and the volute (1) are locked and fixed together by a bolt and nut mechanism.
A fan according to claim 4 or 5, characterized in that an interference fit is provided between the hoop body (41) and the outer wall of the plastic motor (3).
A fan according to claim 6, characterized in that an arm (411) is protruded from the outer wall of the hoop body (41), and a capacitor (5) is mounted on the arm (411).