CN214626588U

CN214626588U - Novel motor for frequency conversion crossflow fan

Info

Publication number: CN214626588U
Application number: CN202023063155.XU
Authority: CN
Inventors: 刘茂和
Original assignee: Fujian Tianyi Electrical Appliances Co ltd
Current assignee: Fujian Tianyi Electrical Appliances Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-11-05
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses a novel motor for a frequency conversion transverse flow fan, which comprises a front end cover, a rear end cover, a stator core, a rotor and a bearing; the stator core is embraced by a front end cover and a rear end cover, and the rotor is fixed in the front end cover and the rear end cover through a bearing; the front end cover and the rear end cover are both provided with flange mounting surfaces, and the two flange mounting surfaces are overlapped after the front end cover and the rear end cover are assembled; four mounting holes are uniformly distributed at four corners of the flange mounting surface; the motor is fixed on the fan through screws, a rubber cushion block is arranged between the fan and the motor, and a screw rubber cushion sleeve is arranged between the screws and the mounting holes; one end of the rotor is provided with a rotating shaft, the rotating shaft extends out of the front end cover, and the rotating shaft is provided with a fixing surface; the utility model discloses a motor simple structure, manufacturing convenience have reduced manufacturing cost, have satisfied customer's demand.

Description

Novel motor for frequency conversion crossflow fan

Technical Field

The utility model relates to a fan technical field specifically is a novel motor for frequency conversion crossflow blower.

Background

The fan is used as ventilation equipment, is widely used in factories and mines, and has large annual demand; the standard motor causes inconvenience for the installation of the fan due to structural reasons, and the fan motor has higher requirements on the noise of the motor; the traditional fan uses a common motor, the motor is installed by feet or flanges, a special installation bracket is required in a fan air cylinder, the installation is inconvenient and materials are wasted; therefore, the variable frequency fan for the cross flow fan needs to be designed to meet the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple to operate, rational in infrastructure's frequency conversion motor for crossing current fan to overcome prior art's weak point.

In order to achieve the above object, the utility model provides a following technical scheme: a novel motor for a frequency conversion cross flow fan comprises a front end cover, a rear end cover, a stator core, a rotor and a bearing; the stator core is embraced by a front end cover and a rear end cover, and the rotor is fixed in the front end cover and the rear end cover through a bearing; the front end cover and the rear end cover are both provided with flange mounting surfaces, and the two flange mounting surfaces are overlapped after the front end cover and the rear end cover are assembled; four mounting holes are uniformly distributed at four corners of the flange mounting surface; the motor is fixed on the fan through screws, a rubber cushion block is arranged between the fan and the motor, and a screw rubber cushion sleeve is arranged between the screws and the mounting holes; one end of the rotor is provided with a rotating shaft, the front end cover extends out of the rotating shaft, and a fixing surface is arranged on the rotating shaft.

Preferably, the rotor is respectively embedded into the bearing chambers arranged on the front end cover and the rear end cover through bearings so as to be fixed in the front end cover and the rear end cover; the inner cavities of the front end cover and the rear end cover are respectively provided with four raised limiting points for clamping the stator core back and forth; the middle parts of the front end cover and the rear end cover are respectively provided with a limiting lug, and the front end cover and the rear end cover limit the excircle of the stator core through the limiting lugs.

Preferably, the other end of the rotor is fixed in the rear end cover through a bearing, and a bearing chamber arranged on the rear end cover forms a closed chamber.

Preferably, the rear end cover is provided with a wire outlet hole, and a motor outgoing wire penetrates out of the wire outlet hole; and the motor outgoing line and the wire outlet hole are provided with sealing rings.

Preferably, four stator tangent planes are equidistantly arranged on the side surface of the stator core.

Compared with the prior art, the beneficial effects of the utility model are that:

the front end cover and the rear end cover of the utility model not only play a role of supporting the rotor, but also play a role of fixing the stator core, and save the special case fixed stator core required by the traditional motor stator core, and simultaneously, four mounting holes play a role of mounting, and also play a role of fixing the front end cover and the rear end cover at the same time, and save special screws specially used for fixing the front end cover and the rear end cover; in addition, in order to reduce the vibration of the variable frequency motor, the motor is installed by adopting damping measures such as a rubber cushion block, a screw rubber cushion sleeve and the like.

The utility model discloses a motor simple structure, manufacturing convenience have reduced manufacturing cost, have satisfied customer's demand.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the schematic view of the appearance structure of the motor of the present invention.

Fig. 2 is a schematic view of a cross-sectional structure of the motor of the present invention.

Fig. 3 is a schematic view of the structure of the rotating shaft of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-motor, 2-stator core, 3-rubber cushion block, 4-screw rubber cushion cover, 5-screw, 6-rotating shaft, 7-motor outgoing line, 8-rotor, 11-front end cover, 12-rear end cover, 13-limiting lug, 14-flange mounting surface, 15-outlet hole, 16-mounting hole, 17-limiting point, 21-stator tangent plane and 61-fixing surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel motor for a frequency conversion cross flow fan is characterized in that the motor 1 comprises a front end cover 11, a rear end cover 12, a stator core 2, a rotor 8 and a bearing; the stator core 2 is embraced by a front end cover 11 and a rear end cover 12, and the rotor 8 is fixed in the front end cover 11 and the rear end cover 12 through bearings; the front end cover 11 and the rear end cover 12 are both provided with flange mounting surfaces 14, and the flange mounting surfaces 14 are overlapped after the front end cover 11 and the rear end cover 12 are assembled; four mounting holes 16 are uniformly distributed at four corners of the flange mounting surface 14; the motor 1 is fixed on the fan through a screw 5, a rubber cushion block 3 is arranged between the fan and the motor 1, and a screw rubber cushion cover 4 is arranged between the screw and the mounting hole 16; one end of the rotor 8 is provided with a rotating shaft 6 and extends out of the front end cover 11, and a fixing surface 61 is arranged on the rotating shaft 6.

Preferably, the rotor 8 is embedded in bearing chambers provided in the front end cover 11 and the rear end cover 12 through bearings so as to be fixed in the front end cover 11 and the rear end cover 12; the inner cavities of the front end cover 11 and the rear end cover 12 are respectively provided with four raised limit points 17 for clamping the stator core 2 back and forth; the middle parts of the front end cover 11 and the rear end cover 12 are both provided with limiting lugs 13, and the front end cover 11 and the rear end cover 12 limit the excircle of the stator core 2 through the limiting lugs 13.

Preferably, the other end of the rotor 8 is fixed in the rear end cover 12 through a bearing, and a bearing chamber provided in the rear end cover 12 forms a closed chamber.

Preferably, the rear end cover 12 is provided with an outlet hole 15, and the motor outgoing line 7 penetrates out of the outlet hole 15; and the motor outgoing line 7 and the outlet hole 15 are provided with sealing rings.

Preferably, four stator tangent planes 21 are equidistantly arranged on the side surface of the stator core 2.

The performance of the motor needs to meet the torque requirements of different frequency points, so that the motor can output required rotating speed at each working frequency point, and the requirements of torque, rotating speed and air volume required by the variable frequency fan are met; for example, when the rated frequency is 50Hz, the corresponding load rotation speed is 1400r/min (+ -5%), when the frequency is 40Hz, the corresponding load rotation speed is 1100r/min (+ -5%), when the frequency is 75Hz, the corresponding load rotation speed is 2000r/min (+ -5%), and the required frequency and rotation speed characteristic curves of variable frequency fan motors with different specifications may be different.

The motor shell adopts two end covers with the same shape to hold the front end and the rear end of the stator core and is used as a bearing support of a motor rotor; the end cover adopts a square flange circular end cover, and is designed with 4 circular holes, so that the end cover is not only used for fixing a motor in a mounting hole of a fan end plate, but also used for tightly holding front and rear end covers, and special front and rear end cover locking screws in the traditional structure are omitted; the structure is simple, and the stability of motor installation can be well ensured; the motor adopts the rubber cushion when installing at the fan end plate, and four installation screws adopt the rubber sleeve to keep apart screw and motor installation face simultaneously, will avoid the vibrations of motor to transmit fan end plate, play fine shock insulation, cushioning effect.

The motor for the variable-frequency cross-flow fan has high rotating speed at a high frequency point, the integral rigidity and the running stability of the motor are considered during structural design, and a stator punching sheet of the motor adopts a square excircle (namely, a part of circular arc is cut off) and an excircle shape of a stator iron core during design; therefore, the outer edge of the partial circular arc of the stator core is in contact with the inner circular surface of the end cover shell, so that larger interference can be designed, the stator core is not easy to loosen when rotating under larger torque, and the partial outer circular contact surface is easy to press in due to shorter (four-section circular arc) during stator press mounting.

The output shaft of the motor adopts a round shaft flat-cutting structure, and is matched with a round hole (the inner circle is locally flat) of a driving impeller driving disc, so that the driving is simple and reliable.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a novel motor for frequency conversion crossflow fan which characterized in that: the motor (1) comprises a front end cover (11), a rear end cover (12), a stator core (2), a rotor (8) and a bearing; the stator core (2) is embraced by a front end cover (11) and a rear end cover (12), and the rotor (8) is fixed in the front end cover (11) and the rear end cover (12) through a bearing; the front end cover (11) and the rear end cover (12) are both provided with flange mounting surfaces (14), and the flange mounting surfaces (14) are overlapped after the front end cover (11) and the rear end cover (12) are assembled; four mounting holes (16) are uniformly distributed at four corners of the flange mounting surface (14); the motor (1) is fixed on the fan through a screw (5), a rubber cushion block (3) is arranged between the fan and the motor (1), and a screw rubber cushion cover (4) is arranged between the screw and the mounting hole (16); one end of the rotor (8) is provided with a rotating shaft (6) and extends out of the front end cover (11), and a fixing surface (61) is arranged on the rotating shaft (6).

2. The novel motor for the variable-frequency cross flow fan is characterized in that: the rotor (8) is respectively embedded into bearing chambers arranged on the front end cover (11) and the rear end cover (12) through bearings so as to be fixed in the front end cover (11) and the rear end cover (12); the inner cavities of the front end cover (11) and the rear end cover (12) are respectively provided with four raised limiting points (17) for clamping the stator core (2) back and forth; the middle parts of the front end cover (11) and the rear end cover (12) are respectively provided with a limiting lug (13), and the front end cover (11) and the rear end cover (12) limit the excircle of the stator core (2) through the limiting lugs (13).

3. The novel motor for the variable-frequency cross flow fan is characterized in that: the other end of the rotor (8) is fixed in the rear end cover (12) through a bearing, and a bearing chamber arranged on the rear end cover (12) forms a closed chamber.

4. The novel motor for the variable-frequency cross flow fan is characterized in that: the rear end cover (12) is provided with a wire outlet hole (15), and a motor outgoing wire (7) penetrates out of the wire outlet hole (15); and the motor outgoing line (7) and the outgoing line hole (15) are provided with sealing rings.

5. The novel motor for the variable-frequency cross flow fan is characterized in that: the side surface of the stator core (2) is equidistantly provided with four stator tangent planes (21).