CN216312859U

CN216312859U - Automatic dynamic balance motor, fan and range hood

Info

Publication number: CN216312859U
Application number: CN202122281965.0U
Authority: CN
Inventors: 马凌云
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-15
Anticipated expiration: 2031-09-18

Abstract

The utility model relates to an automatic dynamic balance motor which comprises a casing and a rotor, wherein a motor shaft at the center of the rotor is rotatably supported on end covers at two ends of the casing, the automatic dynamic balance motor also comprises a vibration sensor for detecting radial vibration data of the rotor, a control plate in communication connection with the vibration sensor, and a dynamic balance device sleeved on the motor shaft, wherein the dynamic balance device can be self-driven, and a communication module in communication connection with the control plate is arranged in the dynamic balance device. The automatic dynamic balance motor can accurately detect the unbalanced state of the rotating speed and achieve automatic dynamic balance of the rotor through automatic balance weight adjustment. The utility model also relates to a fan which comprises the automatic dynamic balance fan and an impeller connected to a motor shaft. The fan can solve the problem of motor imbalance caused in the assembling and transporting processes without manual testing and balancing. The utility model also relates to a range hood applying the fan.

Description

Automatic dynamic balance motor, fan and range hood

Technical Field

The utility model relates to an automatic dynamic balance motor, a fan applying the automatic dynamic balance motor and a range hood.

Background

The range hood is internally provided with the fan to realize the work of oil smoke absorption, the work noise problem of the range hood is always an important problem of the structural design of the range hood, and the vibration problem of the fan is also a factor causing noise. The unbalance of a fan rotor in the range hood can aggravate the vibration of a rotor system, so that the vibration of the whole machine connected with the rotor system is abnormal, and the vibration is caused by the unbalance of the rotor. At present, the unbalance problem of the rotor is improved by a method of off-line dynamic balance in a factory, namely, each impeller in the fan is subjected to dynamic balance test on a dynamic balancing machine, and the unbalance problem of the rotor is improved by a method of adding mass plates. However, this method requires additional manual testing and balancing for each impeller, and the dynamically balanced impeller may be unbalanced again due to vibration deformation during transportation, which is time and labor consuming and cannot ensure the self-balancing reliability when operating on the machine.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an automatic dynamic balance motor capable of accurately detecting the unbalanced state of the rotation speed and achieving automatic dynamic balance of the rotor by automatically adjusting the balance weight, aiming at the above prior art.

The second technical problem to be solved by the present invention is to provide a fan that solves the problem of motor imbalance caused during assembly and transportation without manual testing and balancing.

The third technical problem to be solved by the present invention is to provide a range hood using the aforementioned fan, aiming at the above prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides an automatic dynamic balance motor, includes casing and rotor, the motor shaft rotation support at the rotor center is on the end cover at casing both ends, its characterized in that: the motor shaft vibration detection device is characterized by further comprising a vibration sensor for detecting radial vibration data of the rotor, a control board in communication connection with the vibration sensor, and a dynamic balance device sleeved on the motor shaft, wherein a communication module in communication connection with the control board is arranged in the dynamic balance device.

Preferably, the vibration sensors include two vibration sensors, and the two vibration sensors are respectively arranged close to the contact position of the motor shaft on the end cover.

In order to improve the adjusting capacity for the unbalanced rotating speed condition, two ends of the motor shaft are respectively sleeved with a dynamic balancing device at the positions close to the vibration sensors.

In order to more accurately acquire the vibration signal of the rotor, two ends of the motor shaft are rotatably supported on end covers at two ends of the shell through bearings respectively;

the outer surface of the end cover is provided with an annular groove, the groove is located on the periphery of the bearing, and the vibration sensor is annular and is arranged in the groove in a matched mode.

Preferably, the end cover is provided with an air hole.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: a fan, its characterized in that: the automatic dynamic balance fan comprises the automatic dynamic balance fan and an impeller connected to a motor shaft.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: a range hood, its characterized in that: including the fan described previously.

Compared with the prior art, the utility model has the advantages that: according to the automatic dynamic balance motor, the radial vibration signals of the rotor can be detected and acquired through the vibration sensor, the vibration signals are further processed to acquire the frequency conversion information of the rotor, and the adjustment quantity of the dynamic balance device is calculated and acquired according to the frequency conversion information of the rotor, so that the dynamic balance device can realize self-driving and automatic balance weight adjustment after acquiring the adjustment quantity information through communication, and further realize automatic dynamic balance adjustment of the rotor.

The fan and the range hood using the automatic dynamic balance motor do not need manual dynamic balance adjustment, and the problem of rotor dynamic balance damage caused by assembly and transportation is solved.

Drawings

Fig. 1 is a perspective view of a fan in an embodiment of the present invention.

Fig. 2 is a cross-sectional view of fig. 1.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 and 2, the automatic dynamic balance motor in the present embodiment includes a housing 1 and a rotor 2. Wherein casing 1 includes the shell of tube-shape and connects the end cover 11 at the shell both ends, and rotor 2 sets up and in casing 1, and casing 1 is interior still to be provided with the stator in the periphery of rotor 2. The center of the rotor 2 extends toward the end covers 11 at both ends of the housing 1 with a motor shaft 21, and the rotor 2 is rotatably supported on both end covers 11 by the motor shaft 21, specifically, both ends of the motor shaft 21 are rotatably supported on both end covers 11 by bearings 5 fixed on the end covers 11. Wherein one end of the motor shaft 21 extends out of the end cover 11 for connection to a load.

The automatic dynamic balance motor also comprises a vibration sensor 3 for detecting radial vibration data of the rotor 2, a control board in communication connection with the vibration sensor 3, and a dynamic balance device 4 sleeved on the motor shaft 21. Wherein the control board can be arranged at any position of the motor.

The vibration sensor 3 in the present embodiment includes two vibration sensors 3, and the two vibration sensors 3 are respectively provided near the contact positions of the motor shaft 21 on the end cover 11. Specifically, the end cap 11 has an annular groove 111 on the outer surface thereof, and the groove 111 is formed by deforming the plate body of the end cap 11. This recess 111 is located the periphery of bearing 5, and vibration sensor 3 is the annular and matches the setting in recess 111, and vibration sensor 3 can be more accurate like this acquire the radial ascending vibration signal of rotor 2. Correspondingly, two dynamic balance devices 4 are also arranged in the machine shell 1, the two dynamic balance devices 4 are respectively close to the vibration sensor 3 and are sleeved at the positions of two ends of the motor shaft 21, so that the two dynamic balance devices 4 can better respectively carry out matched dynamic balance adjustment on signals acquired by the corresponding vibration sensor 3, and the adjusting capability on the unbalanced rotating speed condition is also improved.

The dynamic balance device 4 adopts the dynamic balance device 4 which can automatically realize balance weight adjustment, if the existing dynamic balance head structure can be adopted, the volume of the specific dynamic balance device 4 is matched and changed based on the volume of the motor. The dynamic balance device 4 is internally provided with a communication module which is in communication connection with the control panel. Specifically, the communication module in the dynamic balance device 4 is a wireless communication module, and the communication unit provided on the corresponding control board and communicating with the dynamic balance device 4 is also a wireless communication unit. The wireless communication unit and the wireless communication module are matched to communicate with each other, and the communication mode between the wireless communication unit and the wireless communication module can be various existing wireless communication modes such as a WiFi wireless communication mode and an infrared wireless communication mode.

In addition, in order to ensure the heat dissipation of the motor in the working process, the end cover 11 is provided with an air hole 112.

When the motor rotor 2 works, the control panel can judge whether the motor rotor 2 is in an unbalanced state or not according to detection signals of the two vibration sensors 3, the motor rotor 2 is judged to be in an unbalanced state, the control panel calculates driving angle information of the dynamic balance device 4 according to the detection signals of the vibration sensors 3, the driving angle information is transmitted to the dynamic balance device 4, the dynamic balance device 4 automatically adjusts balance weights in the dynamic balance device, automatic dynamic balance adjustment is further achieved, and automatic dynamic balance adjustment of the rotor 2 is achieved.

The automatic dynamic balance motor in the embodiment can be directly used, and the automatic dynamic balance motor can also be applied to various products needing to perform dynamic balance adjustment on the rotor 2, such as a fan. As shown in fig. 1 and 2, the fan to which the automatic dynamic balance motor is applied includes the aforementioned automatic dynamic balance motor and the impeller 6 connected to the motor shaft 21, one end of the motor shaft 21 extends out of the end cover 11 of the end, and the impeller 6 is connected to the motor shaft 21 located outside the end cover 11 through a connecting member. The connecting piece is provided with a sleeve which can be sleeved outside the motor shaft 21 and a connecting plate which is arranged outside the sleeve along the circumferential direction, and the end surface of the impeller 6 is fixedly connected on the connecting plate.

On the basis, the fan applying the automatic dynamic balance motor can also be applied to various electric products such as a range hood and the like. The installation position of the fan using the automatic dynamic balance motor in the range hood is the same as that of the fan in the existing range hood.

The fan and the range hood using the automatic dynamic balance motor do not need manual dynamic balance adjustment, and the problem of dynamic balance damage of the rotor 2 caused by assembly and transportation is solved.

Claims

1. The utility model provides an automatic dynamic balance motor, includes casing (1) and rotor (2), motor shaft (21) at rotor (2) center rotates and supports on end cover (11) at casing (1) both ends, its characterized in that: still including vibration sensor (3) that are used for detecting rotor (2) radial vibration data, with vibration sensor (3) communication connection's control panel, establish dynamic balance device (4) on motor shaft (21), dynamic balance device (4) have in can self-driven and dynamic balance device (4) with control panel communication connection's communication module.

2. The automatic dynamic balancing motor of claim 1, wherein: the vibration sensors (3) comprise two vibration sensors, and the two vibration sensors (3) are respectively arranged close to the contact positions of the motor shaft (21) on the end cover (11).

3. The automatic dynamic balancing motor of claim 2, wherein: and the two ends of the motor shaft (21) are respectively sleeved with a dynamic balance device (4) at the positions close to the vibration sensor (3).

4. The automatic dynamic balancing motor of claim 2, wherein: two ends of the motor shaft (21) are rotatably supported on end covers (11) at two ends of the shell (1) through bearings (5) respectively;

the outer surface of the end cover (11) is provided with an annular groove (111), the groove (111) is located on the periphery of the bearing (5), and the vibration sensor (3) is annular and is arranged in the groove (111) in a matching mode.

5. The automatic dynamic balance motor according to any one of claims 1 to 4, characterized in that: the end cover (11) is provided with an air hole (112).

6. A fan, its characterized in that: an automatic dynamic balancing fan comprising according to any of the claims 1 to 5, further comprising an impeller (6) connected to the motor shaft (21).

7. A range hood, its characterized in that: comprising a fan according to claim 6.