Device for detecting abnormity of motor fan and control method thereof

Abstract

The invention provides a device for detecting abnormity of a motor fan and a control method thereof, and the device comprises a detection module which is used for detecting the wind power of the motor fan when a motor is started; the control module is in communication connection with the detection module, and the control module is used for judging whether the detection module detects the wind power of the motor fan or not when the motor is started and judging whether the motor fan is abnormal or not according to the judgment result. The motor temperature detection device avoids inevitable losses such as motor overtemperature, faults or fire disasters caused by heat accumulation, is simple in structure and convenient to install, and does not influence the motor structure, so that possible motor temperature abnormity can be rapidly detected in the early stage of the fan fault, the accuracy and efficiency of fault detection are further improved, and the service life of the fan is prolonged. The intelligent degree, the usability and the reliability of the system are improved to a great extent.

Description

Technical Field

[0001] The present invention relates to the technical field of detecting abnormality of a motor fan, and in particular to a device for detecting abnormality of a motor fan and a control method thereof. Background Art

[0002] The motor will generate a lot of heat during use. When the fan fails and is not discovered in time, heat will accumulate, causing consequences such as motor overheating, insulation breakdown, motor burning, system interruption, and in severe cases, fire causing immeasurable losses. Every year, there are accidents caused by motor overheating and fire.

[0003] In the prior art, the motor temperature is usually detected directly. Traditional temperature monitoring methods often rely on manual regular inspections, which is not only inefficient but also prone to omissions. Since motors may be distributed in different areas or in a more complex industrial environment, manual inspections are difficult to ensure timely detection of abnormal temperature increases caused by fan failures. In addition, although some motors are equipped with simple temperature sensors, these sensors have limitations in terms of accuracy, reliability, and data transmission.

[0004] Therefore, there is currently a lack of a device for detecting motor fan abnormalities, which can quickly detect possible motor temperature abnormalities in the early stages of fan failure, thereby avoiding serious consequences such as motor overheating, insulation breakdown, burning, and the resulting system interruptions and fires.

[0005] Therefore, the prior art needs to be further developed. Summary of the invention

[0006] The purpose of the present invention is to overcome the above technical deficiencies and provide a device for detecting motor fan abnormalities and a control method thereof to solve the problems existing in the prior art.

[0007] To achieve the above technical objectives, according to a first aspect of the present invention, the present invention provides a device for detecting abnormality of a motor fan, comprising: A detection module, used to detect the wind force of the motor fan when the motor is turned on; The control module is communicatively connected with the detection module, and the control module is used to determine whether the detection module detects the wind force of the motor fan when the motor is turned on, and determine whether the motor fan is abnormal based on the determination result.

[0008] Specifically, the detection module includes: The air inlet bin is used to guide the air generated when the motor fan is turned on into the interior of the air inlet bin; A wind shield is arranged inside the air inlet bin. If the wind generated when the motor fan is turned on enters the inside of the air inlet bin, the wind shield is opened. If the motor fan is turned on and no wind is generated, the wind shield is closed. The switch device is fixedly connected to the wind shield. When the wind shield is opened, the switch device is closed, and when the wind shield is closed, the switch device is disconnected.

[0009] Specifically, the switch device is communicatively connected with the control module; When the switch device is closed, the control module outputs a signal indicating that the motor fan is operating normally; When the switch device is disconnected, the control module outputs a signal indicating that the motor fan is abnormal.

[0010] Specifically, the switch device includes a normally open contact and a moving contact, and the moving contact is fixedly connected to the wind shield; When the windshield is opened, the normally open contact is connected to the moving contact, that is, the switch device is closed; When the wind shield is closed, the normally open contact is disconnected from the moving contact, that is, the switch device is opened.

[0011] Specifically, the normally open contact is connected to the control module via a connecting device.

[0012] Specifically, the connecting device includes: The motor start auxiliary contact is used to detect whether the motor is started. When the motor starts, the motor start auxiliary contact closes to form a current loop; The intermediate relay is used to detect whether the normally open contact is closed with the moving contact. When the normally open contact is closed with the moving contact, the intermediate relay is turned on; The alarm is used to send out an alarm signal after the intermediate relay is turned on.

[0013] Specifically, the detection module further includes: A fixing device is arranged at the bottom of the air inlet bin and is used to fix the detection module to the motor.

[0014] Specifically, the fixing device is a magnet, which is used to adsorb the detection module on the motor.

[0015] According to a second aspect of the present invention, there is provided a control method for a device for detecting abnormality of a motor fan, comprising: S100, detecting the wind force of the motor fan when the motor is turned on; S200, determining whether the wind force of the motor fan is detected when the motor is turned on, and determining whether the motor fan is abnormal based on the determination result.

[0016] Specifically, the S200 includes: If the wind force of the motor fan is detected when the motor is turned on, it is determined that there is no abnormality in the motor fan; If the wind force of the motor fan is not detected when the motor is turned on, it is determined that the motor fan is abnormal and the control module outputs an alarm signal.

[0017] Beneficial effects: The present invention provides a device for detecting whether a motor fan is working normally, which can give early warning of a motor cooling fan failure, thereby avoiding heat accumulation leading to motor overheating, causing inevitable losses such as failure or fire, and has a simple structure, is easy to install, and will not affect the motor structure, so that the possible motor temperature anomaly can be quickly detected at the early stage of the fan failure, further improving the accuracy and efficiency of fault detection, and greatly improving the intelligence, usability and reliability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the composition of a device for detecting abnormality of a motor fan provided in a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the composition of a detection module of a device for detecting abnormality of a motor fan provided in a specific embodiment of the present invention; Figure 3 It is a structural schematic diagram of a connection device of a device for detecting abnormality of a motor fan provided in a specific embodiment of the present invention; Figure 4 is a flow chart of a control method of a device for detecting abnormality of a motor fan provided in a specific embodiment of the present invention; Wherein, the reference numerals of the above-mentioned drawings are as follows: 1. Air inlet compartment; 2. Wind shield; 3. Normally open contact; 4. Moving contact; 5. Magnet; 6. Motor start auxiliary contact; 7. Intermediate relay; 8. Alarm. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0020] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1, this embodiment provides a device for detecting abnormality of a motor fan, comprising: The detection module 100 is used to detect the wind force of the motor fan when the motor is turned on; The control module 200 is in communication connection with the detection module, and the control module is used to determine whether the detection module detects the wind force of the motor fan when the motor is turned on, and determine whether the motor fan is abnormal according to the determination result.

[0022] It can be understood that the motor fan plays the role of cooling and heat dissipation. When the motor is turned on, the motor fan should operate normally. At this time, the detection module can detect the wind force of the motor fan, thereby judging that the motor fan is in normal working state. If an abnormality occurs, such as fan damage, the fan has no wind force, and the detection module cannot detect the wind force of the motor fan, thereby judging that the motor fan has an abnormality.

[0023] Specifically, the detection module includes: The air inlet bin 1 is used to guide the air generated when the motor fan is turned on to enter the interior of the air inlet bin 1; The wind shield 2 is arranged inside the air inlet bin 1. If the wind generated when the motor fan is turned on enters the air inlet bin 1, the wind shield 2 is opened. If the motor fan is turned on and no wind is generated, the wind shield 2 is closed. The switch device is fixedly connected to the wind shield 2. When the wind shield 2 is opened, the switch device is closed, and when the wind shield 2 is closed, the switch device is disconnected.

[0024] Specifically, the switch device is communicatively connected with the control module; When the switch device is closed, the control module outputs a signal indicating that the motor fan is operating normally; When the switch device is disconnected, the control module outputs a signal indicating that the motor fan is abnormal.

[0025] It should be noted here that the air inlet compartment 1 is the entrance part of the entire detection module, and its main function is to guide the wind generated when the motor fan is turned on to enter the interior. The air inlet compartment 1 is like an air duct, which guides the wind generated by the fan to subsequent components for related detection operations. The wind shield 2 is located inside the air inlet compartment 1, and its state depends on whether there is wind entering the air inlet compartment 1. When the motor fan is turned on normally and the generated wind enters the air inlet compartment 1, the wind shield 2 will open, and when the motor fan fails and no wind is generated, the wind shield 2 remains closed. The wind shield 2 responds to the wind and is one of the key components for detecting whether the fan is working normally. The switch device is fixedly connected to the wind shield 2, and its state is directly related to the state of the wind shield 2. When the wind shield 2 is opened, the switch device is closed; when the wind shield 2 is closed, the switch device is disconnected. The switch device converts the mechanical state of the wind shield 2 into a circuit state, and is a bridge connecting the mechanical part (wind shield 2) and the electrical control part (control module). The switch device is connected to the control module in communication, and this connection enables the state of the switch device to be sensed by the control module. This communication connection can be wired, such as transmitting electrical signals through wires; it can also be wireless, such as transmitting signals through wireless communication technologies such as Bluetooth and ZigBee, depending on the actual design requirements. When the switch device is closed, it means that the windshield 2 is open, that is, the motor fan is operating normally and generating wind force. At this time, the control module outputs a signal that the motor fan is operating normally. When the switch device is disconnected, it indicates that the windshield 2 is closed, that is, the motor fan does not generate wind force, and a fault may occur. The control module outputs a signal that the motor fan is abnormal, which is used to trigger the alarm device to notify maintenance personnel to perform maintenance, or take corresponding emergency measures in the automatic control system, such as stopping the operation of related equipment to avoid further damage. The entire detection module is based on a simple physical principle, that is, the working state of the motor fan is judged by the effect of wind force on the windshield 2. It does not require complex sensors or algorithms, is intuitive, and improves the reliability of the entire detection system.

[0026] Specifically, the switch device includes a normally open contact 3 and a moving contact 4, and the moving contact 4 is fixedly connected to the wind shield 2; When the windshield 2 is opened, the normally open contact 3 is connected to the moving contact 4, that is, the switch device is closed; When the wind shield 2 is closed, the normally open contact 3 is disconnected from the moving contact 4, that is, the switch device is opened.

[0027] See also Figure 2In some specific embodiments, the above working process includes: when the motor fan rotates, the air volume passes through the air inlet bin 1 to open the wind shield 2. After the wind shield 2 is opened, the moving contact 4 and the normally open contact 3 are connected, and the normally open contact 3 is connected to the control module. When the normally open contact 3 is closed, the fan is normal, and when it is disconnected, the fan is abnormal. If an abnormality occurs, the fan fails or is damaged, the fan has no wind force and cannot blow up the wind shield 2. The two normally open contacts 3 of the wind shield 2 are disconnected. Figure 2 As shown, in this case the feedback motor fan is abnormal.

[0028] Specifically, the normally open contact 3 is connected to the control module through a connecting device.

[0029] Specifically, the connecting device includes: The motor start auxiliary contact 6 is used to detect whether the motor is started. When the motor is started, the motor start auxiliary contact 6 is closed to form a current loop; The intermediate relay 7 is used to detect whether the normally open contact 3 is closed with the moving contact 4. When the normally open contact 3 is closed with the moving contact 4, the intermediate relay 7 is turned on. The alarm device 8 is used to send out an alarm signal after the intermediate relay 7 is turned on.

[0030] See also Figure 3 In some specific embodiments, the normally open contact 3 is connected to the control module through a connecting device, and the connecting device is composed of a 24V power supply, a motor starting auxiliary contact 6, a normally open contact 3, an intermediate relay 7, a switch, and an alarm 8. If it is found that the fan is not started normally, that is, the normally open contact 3 is not closed normally, the line is disconnected. At this time, the power supply is directly connected to the alarm 8 to alarm. After receiving the alarm signal, the on-site personnel perform maintenance processing, thereby avoiding the motor from burning due to temperature accumulation and causing losses.

[0031] The working process of the connection device includes: Figure 3As shown, +DC24V is the positive pole of the power supply, -DC is the negative pole of the power supply, the motor start auxiliary contact 6 is used to detect whether the motor is started, the normally open contact 3 is disconnected under normal circumstances, and is closed when the motor is not started. The intermediate relay 7 (KM1) is the switch that controls the alarm 8, and the alarm 8 sounds an alarm when the line is disconnected. Under normal working conditions, when the motor starts normally, the motor start auxiliary contact 6 will be closed. Since the motor start auxiliary contact 6 is closed, the current flows to the coil of the intermediate relay 7 (KM1) through the auxiliary contact, and the intermediate relay 7 (KM1) is activated, and the normally open contact inside it is closed. The current flows to the alarm 8 through the normally open contact of the intermediate relay 7 (KM1), but the alarm 8 will not sound an alarm at this time, because no loop is formed in the circuit. Under normal circumstances, the normally open contact 3 is disconnected, so it will not affect the normal operation of the circuit. Under abnormal working conditions, if the motor does not start normally, the motor starting auxiliary contact 6 will remain in the disconnected state. Since the motor starting auxiliary contact 6 is disconnected, the current cannot flow to the coil of the intermediate relay 7 (KM1) through the auxiliary contact, and the intermediate relay 7 (KM1) will not be activated. The normally open contact inside it remains in the disconnected state, and the current flows directly to the alarm 8 through the normally open contact 3, forming a loop, and the alarm 8 alarms.

[0032] Specifically, the detection module further includes: The fixing device is arranged at the bottom of the air inlet bin 1 and is used for fixing the detection module to the motor.

[0033] Specifically, the fixing device is a magnet 5, which is used to adsorb the detection module on the motor.

[0034] See also Figure 2 In some specific embodiments, the fixing device in the detection module is located at the bottom of the air inlet bin 1, and its main function is to fix the detection module to the motor to ensure that the detection module is in a stable position during the operation of the motor, thereby ensuring the accuracy and reliability of the detection. Two strong magnets 5 can be set at the bottom of the air inlet bin 1 to adsorb the detection module in the stator slot of the motor. The magnet 5 has the characteristics of being able to generate a magnetic field and attract ferromagnetic materials. By using the magnet 5 as a fixing device and using its magnetism to adsorb the detection module on the motor, sufficient adsorption force can be provided to enable the detection module to be firmly adsorbed on the motor. Compared with the traditional fixing method, this adsorption-type fixing method is simpler and faster. When installing the detection module, it is only necessary to bring the detection module close to the stator slot of the motor, and the magnet 5 will automatically adsorb, which greatly reduces the installation time and labor costs.

[0035] It should be noted here that the present embodiment provides a device for detecting whether the motor fan is working normally, which can provide early warning of motor cooling fan failure, avoid heat accumulation leading to motor overheating, and cause inevitable losses such as failure or fire. It has a simple structure, is easy to install, and will not affect the motor structure, so that the motor temperature abnormality that may be caused can be quickly detected in the early stage of fan failure, further improving the accuracy and efficiency of fault detection, and greatly improving the intelligence, usability and reliability of the present invention.

[0036] See also Figure 4 This embodiment provides a control method for a device for detecting abnormality of a motor fan, the method comprising: S100, detecting the wind force of the motor fan when the motor is turned on; S200, determining whether the wind force of the motor fan is detected when the motor is turned on, and determining whether the motor fan is abnormal based on the determination result.

[0037] Specifically, the S200 includes: If the wind force of the motor fan is detected when the motor is turned on, it is determined that there is no abnormality in the motor fan; If the wind force of the motor fan is not detected when the motor is turned on, it is determined that the motor fan is abnormal and the control module outputs an alarm signal.

[0038] It can be understood that the present embodiment is applicable to the above-mentioned device for detecting abnormalities of the motor fan, and the specific working principle is as follows: the device is adsorbed in the stator slot of the motor through two strong magnets 5 at the bottom. When the motor fan rotates, the air volume passes through the air inlet bin 1 to open the wind shield 2. When the wind shield 2 is opened, the moving contact 4 and the normally open contact 3 are connected. The normally open contact 3 is connected to the control module through the connecting device. When the normally open contact 3 is closed, it is fed back that the motor fan is normal. When the normally open contact 3 is disconnected, it is fed back that the motor fan is abnormal. When the motor fan is abnormal, an alarm signal is sent out through the alarm device 8 of the connecting device. When the on-site personnel receive the alarm signal, they immediately perform maintenance processing, which can avoid the motor from burning due to temperature accumulation and causing losses, thereby greatly improving the accuracy and efficiency of motor fan fault detection.

[0039] It should be noted here that the present embodiment provides a control method for a device for detecting whether a motor fan is working normally, which can provide early warning of a motor cooling fan failure, thereby avoiding heat accumulation leading to motor overheating, causing inevitable losses such as failure or fire, and has a simple structure, is easy to install, and will not affect the motor structure, thereby being able to quickly detect possible motor temperature anomalies in the early stages of a fan failure, further improving the accuracy and efficiency of fault detection, and greatly improving the intelligence, usability and reliability of the present invention.

[0040] In a preferred embodiment, the present application further provides an electronic device, the electronic device comprising: A memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the control method of the device for detecting abnormality of a motor fan is implemented. The computer device can be broadly a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected via a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices via a network. When the computer program is executed by the processor, the steps of the method of the present invention are performed.

[0041] The present invention may be implemented as a computer-readable storage medium having a computer program stored thereon, which causes the steps of the method of an embodiment of the present invention to be executed when executed by a processor. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be performed by one or more computer devices or processors, and one or more other method steps / operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step / operation, or perform two or more method steps / operations.

[0042] It should be noted here that the present invention provides a device for detecting whether a motor fan is working normally and a control method thereof, which can provide early warning of motor cooling fan failures, avoid heat accumulation leading to motor overheating, and cause inevitable losses such as failures or fires. It has a simple structure, is easy to install, and will not affect the motor structure, so that the motor temperature anomaly that may be caused can be quickly detected in the early stage of a fan failure, further improving the accuracy and efficiency of fault detection, and greatly improving the intelligence, usability and reliability of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[0045] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for detecting abnormality of a motor fan, characterized in that: include: A detection module, used to detect the wind force of the motor fan when the motor is turned on; The control module is communicatively connected with the detection module, and the control module is used to determine whether the detection module detects the wind force of the motor fan when the motor is turned on, and determine whether the motor fan is abnormal based on the determination result.

2. The device for detecting abnormality of a motor fan according to claim 1, characterized in that: The detection module comprises: The air inlet bin (1) is used to guide the air generated when the motor fan is turned on to enter the interior of the air inlet bin (1); A wind shield (2) is arranged inside the air inlet bin (1); if the wind generated when the motor fan is turned on enters the air inlet bin (1), the wind shield (2) is opened; if the motor fan is turned on and no wind is generated, the wind shield (2) is closed; A switch device is fixedly connected to the wind shield (2); when the wind shield (2) is opened, the switch device is closed; when the wind shield (2) is closed, the switch device is opened.

3. The device for detecting abnormality of a motor fan according to claim 2, characterized in that: The switch device is communicatively connected with the control module; When the switch device is closed, the control module outputs a signal indicating that the motor fan is operating normally; When the switch device is disconnected, the control module outputs a signal indicating that the motor fan is abnormal.

4. The device for detecting abnormality of a motor fan according to claim 3, characterized in that: The switch device comprises a normally open contact (3) and a moving contact (4), wherein the moving contact (4) is fixedly connected to the wind shield (2); When the wind shield (2) is opened, the normally open contact (3) is connected to the moving contact (4), that is, the switch device is closed; When the wind shield (2) is closed, the normally open contact (3) is disconnected from the moving contact (4), that is, the switch device is opened.

5. The device for detecting abnormality of a motor fan according to claim 4, characterized in that: The normally open contact (3) is connected to the control module via a connecting device.

6. The device for detecting abnormality of a motor fan according to claim 5, characterized in that: The connecting device comprises: The motor starting auxiliary contact (6) is used to detect whether the motor is started. When the motor is started, the motor starting auxiliary contact (6) is closed to form a current loop; The intermediate relay (7) is used to detect whether the normally open contact (3) is closed with the moving contact (4); when the normally open contact (3) is closed with the moving contact (4), the intermediate relay (7) is turned on; The alarm device (8) is used to send out an alarm signal after the intermediate relay (7) is turned on.

7. The device for detecting abnormality of a motor fan according to claim 3, characterized in that: The detection module further includes: A fixing device is arranged at the bottom of the air inlet bin (1) and is used to fix the detection module to the motor.

8. The device for detecting abnormality of a motor fan according to claim 7, characterized in that: The fixing device is a magnet (5) and is used to adsorb the detection module onto the motor.

9. A control method for a device for detecting abnormality of a motor fan, characterized in that: The device for detecting abnormality of a motor fan according to any one of claims 1 to 8 comprises: S100, detecting the wind force of the motor fan when the motor is turned on; S200, determining whether the wind force of the motor fan is detected when the motor is turned on, and determining whether the motor fan is abnormal based on the determination result.

10. The control method of the device for detecting abnormality of a motor fan according to claim 9, characterized in that: The S200 includes: If the wind force of the motor fan is detected when the motor is turned on, it is determined that there is no abnormality in the motor fan; If the wind force of the motor fan is not detected when the motor is turned on, it is determined that the motor fan is abnormal and the control module outputs an alarm signal.

Images