Motor fixing support, air conditioner and motor operation control method thereof

Abstract

The invention discloses a motor fixing support used for supporting a motor. Comprising a connecting part and a heat dissipation part which are connected together, the connecting part comprises a connecting cross beam used for installation, the connecting cross beam is connected with the heat dissipation part, the heat dissipation part is connected with a detection device used for detecting the amplitude and frequency of a motor, and the detection device is in communication connection with a controller. The motor fixing support can be applied to air conditioners of different models, operation resonance sound caused in the operation process of the motor can be avoided, the control method is simple, and manpower and material resources are saved. The invention further provides the air conditioner and a motor operation control method thereof.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a motor fixing bracket, an air conditioner and a motor operation control method thereof. Background Art

[0002] In the prior art, the air supply motor of an air conditioner is often designed and developed in combination with the actual air volume requirement of the whole machine during operation. After the fan scheme is determined, the operating characteristics of the fan are basically determined. For the running resonance noise caused by adapting to different models subsequently, generally, the motor structure or the model structure is adjusted, or even both the motor structure and the model structure are adjusted to avoid the abnormal noise of the fan operation. In this way, it is necessary to re-evaluate the motor and model structure schemes, which not only requires a large amount of manpower and material resources, is time-consuming and laborious, but also affects the overall progress of the development of new models. Summary of the Invention

[0003] In view of this, the present invention provides a motor fixing bracket, which can be applied to different models of air conditioners, can avoid the running resonance noise caused during the operation of the motor, has a simple control method, and saves manpower and material resources.

[0004] The present invention also provides an air conditioner and a motor operation control method.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A motor fixing bracket includes a connecting part and a heat dissipation part connected together. The connecting part includes a connecting cross beam for installation. The connecting cross beam is connected to the heat dissipation part. A detection device for detecting the amplitude and frequency of the motor is connected to the heat dissipation part, and the detection device is communicatively connected to a controller.

[0007] Optionally, the heat dissipation part includes a central platform and heat dissipation holes arranged around the central platform, and the motor is installed on the inner surface of the central platform;

[0008] The detection device is a vibration sensor.

[0009] Optionally, the heat dissipation holes are separated by radiation rib plates, and the radiation rib plates are arranged radially around the central platform;

[0010] There are multiple radiation rib plates, and the multiple radiation rib plates are connected by an annular rib located at the edge.

[0011] Optionally, the connecting cross beam is provided with an anti-fooling boss for limiting and a connecting through hole for connection;

[0012] There are several connecting through holes at each connection position, and the several connecting through holes at each connection position are arranged radially around the center of the motor fixing bracket.

[0013] Optionally, the anti-fooling boss is a frustum structure with a smaller diameter at the top and a larger diameter at the bottom.

[0014] Optionally, a motor lead hole is provided on the heat dissipation part, and a raised connection bridge is provided at the connection position between the connection part and the heat dissipation part.

[0015] As can be seen from the above technical solution, for the motor fixing bracket provided by the present invention, a detection device for detecting the amplitude and frequency of the motor is connected to the heat dissipation part, and the detection device is communicatively connected to the controller. The amplitude and frequency of the motor are collected in real time by the detection device, and the collected signals are transmitted to the controller. The controller processes the collected amplitude and frequency to obtain the parameters corresponding to the amplitude and frequency, and compares the corresponding parameters with the amplitude and frequency parameters in the pre-stored motor operation model in the controller respectively. According to the comparison result, the motor parameters are optimized to avoid resonance between the motor and the fan of the blower, thereby avoiding the existence of resonance noise during motor operation and reducing the noise. The motor fixing bracket of the present invention can be applied to air conditioners of different models. Without adjusting the structure of the motor, only the parameters of the motor need to be controlled by the controller to avoid the running resonance noise caused during motor operation. There is no need to re-evaluate the motor and the model structure scheme, saving manpower and material resources, being time-saving and labor-saving, and accelerating the overall progress of the development of new models.

[0016] The present invention also provides an air conditioner, including a motor and the above-mentioned motor fixing bracket. The motor is arranged in the inner cavity surrounded by the motor fixing bracket and the motor cover, the motor is connected to the motor fixing bracket, and the motor fixing bracket is connected to the whole machine cross beam.

[0017] Optionally, a first damping layer is provided between the motor fixing bracket and the whole machine cross beam;

[0018] The whole machine cross beam is connected to the whole machine housing, and a whole machine air ring is provided on the side wall of the cavity of the whole machine housing for placing the motor. A second damping layer is provided on the side surface of the whole machine air ring.

[0019] Since the air conditioner of the present invention includes the above-mentioned motor fixing bracket, it has the advantages of the above-mentioned motor fixing bracket, which will not be elaborated here.

[0020] The present invention also provides a method for controlling motor operation, including:

[0021] Collecting the real-time amplitude and / or real-time frequency of the motor;

[0022] Comparing the real-time amplitude and / or the real-time frequency with a preset amplitude and / or a preset frequency to determine whether the motor operation parameters are abnormal;

[0023] Optimize the motor operation parameters according to the determination result.

[0024] Optionally, the comparing the real-time amplitude and / or the real-time frequency with a preset amplitude and / or a preset frequency, and determining whether the real-time amplitude and / or the real-time frequency is abnormal includes:

[0025] If the difference between the real-time amplitude and / or the real-time frequency and the preset amplitude and / or the preset frequency is within a preset range, it is determined that the motor operation parameters are normal and the motor operates normally;

[0026] If the difference between the real-time amplitude and / or the real-time frequency and the preset amplitude and / or the preset frequency exceeds the preset range, it is determined that the motor operation parameters are abnormal;

[0027] Optimize the motor operation parameters according to the abnormal data;

[0028] Preferably, the abnormal data includes amplitude and phase. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is a schematic flow chart of the motor operation control method provided by the embodiment of the present invention;

[0031] Figure 2 is a schematic structural diagram of the motor fixing bracket provided by the embodiment of the present invention from one angle;

[0032] Figure 3 is a schematic structural diagram of the motor fixing bracket provided by the embodiment of the present invention from another angle;

[0033] Figure 4 is a schematic installation structure diagram of the motor provided by the embodiment of the present invention;

[0034] Figure 5 is Figure 4 a partial enlarged structural diagram of part A in

[0035] Figure 6 is Figure 4 a partial enlarged structural diagram of part B in

[0036] Wherein:

[0037] 1. Motor fixing bracket

[0038] 101. Connecting crossbeam

[0039] 102. Vibration sensor

[0040] 103. Anti-fooling boss

[0041] 104. Connecting through-hole

[0042] 105. Connecting bridge

[0043] 106. Radiation rib plate

[0044] 107. Annular rib

[0045] 108. Motor lead hole

[0046] 109. Motor lead

[0047] 110. Central platform

[0048] 111. Heat dissipation hole

[0049] 2. Motor cover

[0050] 3. Connecting piece

[0051] 4. Fan

[0052] 5. Whole machine crossbeam

[0053] 6. Whole machine housing

[0054] 7. Whole machine air duct

[0055] 8. Second damping layer

[0056] 9. First damping layer Detailed implementation manners

[0057] The present invention discloses a motor fixing bracket, which can be applied to air conditioners of different models, can avoid the running resonance noise caused during the operation of the motor, has a simple control method, and saves manpower and material resources.

[0058] The present invention also discloses an air conditioner and a control method for the operation of the motor.

[0059] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0060] Refer toFigures 1 to 6 , the motor fixing bracket 1 of the present invention is used to support the motor. The motor fixing bracket 1 includes a connecting portion and a heat dissipation portion connected together. The connecting portion includes a connecting cross beam 101 for installation, and the connecting cross beam 101 is connected to the heat dissipation portion. In order to improve the installation stability, there are two connecting cross beams 101, and the two connecting cross beams 101 are symmetrically arranged on both sides of the heat dissipation portion, as Figure 2 and Figure 3 shown. A detection device for detecting the amplitude and frequency of the motor is connected to the heat dissipation portion.

[0061] Among them, the detection device is communicatively connected to the controller, and the controller collects the amplitude and frequency signals of the motor. When the motor rotates, the amplitude and frequency of the motor are collected by the detection device, and the collected signals are transmitted to the controller. The controller compares the collected amplitude and frequency with the amplitude and frequency parameters in the pre-stored motor operation model, and optimizes the motor parameters according to the comparison result, so as to make the operation performance of the fan reach the best and avoid the resonance sound of the motor operation. The motor fixing bracket 1 of the present invention avoids the abnormal sound of the fan 4 of the fan from running by connecting a detection device for detecting the amplitude and frequency of the motor to the heat dissipation portion, and the controller optimizes the motor parameters according to the comparison result of the collected amplitude and frequency with the pre-stored parameters, without the need to re-evaluate the motor and the model structure scheme, saving manpower and material resources, saving time and effort, and accelerating the overall progress of the development of new models.

[0062] Specifically, the heat dissipation portion includes a central platform 110 and heat dissipation holes 111 arranged around the central platform 110. The motor is installed on the inner surface of the central platform 110. Here, the inner surface refers to the surface of the central platform 110 close to the motor cover 2. The detection device is connected to the whole machine cross beam 5 in the whole machine housing 6. Specifically, the detection device is a vibration sensor 102. The motor fixing bracket 1 and the motor cover 2 are connected together by a connecting member 3. The connecting member 3 can be a connecting bolt or other connecting structures commonly used by those skilled in the art, and is not limited here.

[0063] Among them, the heat dissipation holes 111 are separated by radiation rib plates 106, and the radiation rib plates 106 are arranged radially around the central platform 110. Specifically, there are multiple radiation rib plates 106, and the multiple radiation rib plates 106 are connected by an annular rib 107 located at the edge. In order to improve the structural strength of the radiation rib plates 106, there are at least two annular ribs 107, and the annular ribs 107 are arranged around the central platform 110, and different annular ribs 107 are arranged at intervals, so as to improve the structural strength of the radiation rib plates 106,

[0064] In one embodiment, the height of the heat dissipation part is set higher than the surface of the connection part. To improve the structural strength of the connection part, a connecting bridge 105 is provided in a protruding manner at the connection position between the connection part and the heat dissipation part. Specifically, the connecting bridge 105 is provided at the connection position between the connecting cross beam 101 and the annular rib 107, and the height of the connecting bridge 105 is in the same plane as the height of the annular rib 107. The provision of the connecting bridge 105 and the radiation rib plate 106 not only improves the stiffness of the bracket to play a vibration damping role, but also increases the heat dissipation area.

[0065] To facilitate the installation of the motor fixing bracket 1, an anti-fooling boss 103 for limiting and a connection through hole 104 for connection are provided on the connecting cross beam 101. By providing the anti-fooling boss 103, it is convenient to pre-position the motor fixing bracket 1 during installation. By providing the connection through hole 104, it is convenient to connect the motor fixing bracket 1 using a connecting piece. Among them, in order to adapt to the connection of different models of the machine body, a plurality of connection through holes 104 are provided at each connection position, and the plurality of connection through holes 104 at each connection position are arranged radially around the center of the motor fixing bracket 1. In one embodiment, as Figure 2 shown, eight connection through holes 104 are provided. The connection through holes 104 are provided at the corner positions of the connecting cross beam 101. Two connection through holes 104 are provided at each connection position, and the connection line of the two connection through holes 104 passes through the center position of the center table 110, thereby forming a radial arrangement. To facilitate the lead-out of the motor lead 109, a motor lead hole 108 is provided on the heat dissipation part.

[0066] To facilitate installation, the anti-fooling boss 103 is a frustum structure with a small top diameter and a large bottom diameter, so that the top of the anti-fooling boss 103 can easily extend into the limiting hole on the installation structure, and the inclined surface of the frustum structure is used for installation guidance.

[0067] The present invention also provides an air conditioner, including a motor and the above-mentioned motor fixing bracket. The motor is arranged in the inner cavity surrounded by the motor fixing bracket 1 and the motor cover 2. The motor is connected to the motor fixing bracket 1, and the motor fixing bracket 1 is the above-mentioned motor fixing bracket. The motor fixing bracket 1 is connected to the whole machine cross beam 5, and the whole machine cross beam 5 is connected to the whole machine housing 6. A first vibration damping layer 9 is provided between the motor fixing bracket 1 and the whole machine cross beam 5. By providing the first vibration damping layer 9, the vibration of the motor is slowed down from being transmitted to the whole machine housing 6. A whole machine air ring 7 is provided on the side wall of the chamber of the whole machine housing 6 where the fan 4 is placed, and a second vibration damping layer 8 is provided on the side surface of the whole machine air ring 7. In one embodiment, the second vibration damping layer 8 covers both the inner side surface and the outer side surface of the whole machine air ring 7. Among them, the second vibration damping layer 8 and the first vibration damping layer 9 can be rubber layers or other vibration damping material layers commonly used in the art, which are not limited here.

[0068] The present invention also provides a method for controlling the operation of an electric motor. When the electric motor rotates, the amplitude and / or frequency of the electric motor are collected by a detection device, and the collected signals are transmitted to a controller. The controller compares the collected amplitude and / or frequency with the amplitude and / or frequency parameters in a pre-stored electric motor operation model, and optimizes the electric motor operation parameters according to the comparison result, so as to make the operation performance of the fan reach the best and avoid the resonance sound during the operation of the electric motor. Specifically, during the start-up process and the working process of the electric motor, the amplitude and / or frequency of the electric motor are collected in real time by the detection device, and the controller optimizes the electric motor parameters according to the collected amplitude and / or frequency to avoid resonance between the electric motor and the fan.

[0069] In an embodiment, after receiving the collected amplitude and frequency data, the controller compares and analyzes them with the data in the database to determine whether it is necessary to optimize the electric motor parameters. The electric motor parameters include but are not limited to the rotation speed of the electric motor operation and the amplitude, phase of the quadrature-axis voltage, and the amplitude, phase of the direct-axis voltage at the corresponding rotation speed. The detection device collects the amplitude and frequency of the electric motor in real time. The controller processes the collected amplitude and frequency, and then compares them with the amplitude and frequency parameters in a preset electric motor operation model. If the collected amplitude and frequency are within the threshold range, it is determined that the electric motor operation parameters are normal, and the electric motor continues to operate with the current parameters; otherwise, it is determined that the electric motor operation parameters are abnormal. The controller optimizes the electric motor operation parameters according to the abnormal data, and the abnormal data includes amplitude and phase. The controller will record the current abnormal point and reduce or superimpose and shift the abnormal amplitude of the electric motor based on the amplitude size and frequency of the abnormal point. The threshold range is the amplitude and frequency range where the electric motor operates normally without abnormal resonance points. If it exceeds this threshold range, it is necessary to optimize the electric motor parameters. After the optimization is completed, the electric motor operates according to the optimized parameters.

[0070] In the electric motor operation control method of the present invention, during the operation of the electric motor, the amplitude and frequency of the electric motor are collected in real time by the detection device, and the collected signals are transmitted to the controller. The controller optimizes the electric motor parameters according to the collected amplitude and frequency to avoid resonance between the electric motor and the fan 4 or the whole machine housing 6, thereby avoiding the existence of the resonance sound during the operation of the electric motor and reducing the noise. The electric motor operation control method of the present invention can be applied to air conditioners of different models. It is not necessary to adjust the structure of the electric motor. Only the controller needs to control the parameters of the electric motor to avoid the operation resonance sound caused during the operation of the electric motor. The control method is simple, saving manpower and material resources, saving time, and accelerating the overall progress of the development of new models.

[0071] Specifically, the motor is connected to the motor fixing bracket 1. The detection device is a vibration sensor 102. To facilitate the detection of the amplitude and frequency of the motor, the vibration sensor 102 is fixedly connected to the motor fixing bracket 1, and the amplitude and frequency of the motor are collected by the vibration sensor 102, and the collected data is transmitted to the controller. The motor is arranged in the chamber surrounded by the motor fixing bracket 1 and the motor cover 2 for protecting the motor. The controller is the whole machine controller.

[0072] A speed sensor for monitoring the speed of the motor is arranged on the motor, and the controller is communicatively connected to the speed sensor. The speed of the motor is judged through the signal collected by the speed sensor, so as to obtain the working state of the motor.

[0073] In an embodiment, when the motor operation control method of the present invention is used to control the motor, first, the speed of the motor is analyzed. When the speed is 0, it is judged that the motor is not working. When the speed is non-zero, the controller judges whether it is necessary to optimize the parameters of the motor according to the amplitude and frequency of the motor. When it is necessary to optimize the parameters, the controller can control and optimize the parameters of the motor.

[0074] The motor operation control method of the present invention solves the problem of resonance noise existing in the adaptation of existing air conditioner motors to different models, and can solve the abnormal noise during the long-term operation of the whole machine due to the change of its own structural characteristics. The own structural characteristics refer to the corrosion and loosening of connecting screws, the accumulation of dust or snow on the fan resulting in the failure of dynamic balance, etc.

[0075] In the description of this solution, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this solution.

[0076] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this solution, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0077] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0078] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor fixing bracket, characterized in that, It includes a connecting part and a heat dissipation part connected together. The connecting part includes a connecting cross beam for installation. The connecting cross beam is connected to the heat dissipation part. A detection device for detecting the amplitude and frequency of the motor is connected to the heat dissipation part. The detection device is communicatively connected to a controller.

2. The motor fixing bracket according to claim 1, wherein, The heat dissipation part includes a central platform and heat dissipation holes arranged around the central platform. The motor is installed on the inner surface of the central platform. The detection device is a vibration sensor.

3. The motor fixing bracket according to claim 2, wherein, The heat dissipation holes are separated by radial rib plates. The radial rib plates are arranged radially around the central platform. There are multiple radial rib plates. The multiple radial rib plates are connected by an annular rib located at the edge.

4. The motor fixing bracket according to claim 1, characterized in that, The connecting cross beam is provided with an anti-fooling boss for limiting and a connecting through hole for connection. There are several connecting through holes at each connection position. The several connecting through holes at each connection position are arranged radially around the center of the motor fixing bracket.

5. The motor fixing bracket according to claim 4, characterized in that, The anti-fooling boss is a frustum structure with a small top diameter and a large bottom diameter.

6. The motor fixing bracket according to claim 1, characterized in that, A motor lead hole is provided on the heat dissipation part. A connecting bridge is provided in a protruding manner at the connection position between the connecting part and the heat dissipation part.

7. An air conditioner, characterized in that, It includes a motor and the motor fixing bracket according to any one of claims 1-6. The motor is arranged in the inner cavity surrounded by the motor fixing bracket and the motor cover. The motor is connected to the motor fixing bracket. The motor fixing bracket is connected to the whole machine cross beam.

8. The air conditioner according to claim 7, wherein, A first damping layer is provided between the motor fixing bracket and the whole machine cross beam. The whole machine cross beam is connected to the whole machine housing. A whole machine air ring is provided on the side wall of the chamber of the whole machine housing for placing the motor. A second damping layer is provided on the side surface of the whole machine air ring.

9. A method for controlling the operation of an electric motor, characterized in that, It includes: Collecting the real-time amplitude and / or real-time frequency of the motor; Comparing the real-time amplitude and / or real-time frequency with a preset amplitude and / or preset frequency to determine whether the operating parameters of the motor are abnormal; Optimizing the operating parameters of the motor according to the determination result.

10. The motor operation control method according to claim 9, characterized in that, The comparing the real-time amplitude and / or real-time frequency with a preset amplitude and / or preset frequency to determine whether the real-time amplitude and / or real-time frequency are abnormal includes: If the difference between the real-time amplitude and / or real-time frequency and the preset amplitude and / or preset frequency is within a preset range, it is determined that the operating parameters of the motor are normal and the motor operates normally; If the difference between the real-time amplitude and / or real-time frequency and the preset amplitude and / or preset frequency exceeds the preset range, it is determined that the operating parameters of the motor are abnormal; Optimizing the operating parameters of the motor according to the abnormal data; Preferably, the abnormal data includes amplitude and phase.

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