Air conditioner fan operation state comprehensive detection method

Abstract

The application discloses a comprehensive detection method for the running state of an air conditioner fan, which comprises fan fin integrity detection, fan air volume detection, transmission shaft runout detection and fin icing detection. Fin detection sensors, flow sensors, position sensors and temperature sensors are respectively arranged in the air conditioner fan, and are used for transmitting relevant data of each detection. A detection terminal is arranged outside the air conditioner fan, and is used for feeding back detection data. The application performs comprehensive detection on the external fan of an air conditioner system. Through real-time data feedback of the detection terminal, fin integrity, running air volume, transmission shaft runout rate and fin icing condition of the air conditioner fan can be obtained, and the labor intensity of staff during inspection is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner fan, in particular to an air conditioner fan operation state comprehensive detection method. BACKGROUND

[0002] The air conditioner fan is a new type, energy-saving, high-efficiency, variable speed, low-noise centrifugal fan. The fan has compact structure, easy installation, small size, large air volume, high pressure and small vibration. It is equipped with a three-phase voltage regulator or a frequency converter, and can realize stepless speed regulation. It is especially suitable for places with strict noise requirements and large air volume variation range, and is an ideal supporting product for air conditioning, purification and other industries. The air conditioner fan belongs to the external structure of the air conditioning system, and a complete air conditioning system is composed of indoor and outdoor units. The air conditioner fan is the outdoor unit structure of the air conditioning system.

[0003] After a large amount of retrieval, the prior art: CN113432242B discloses an air conditioner fan operation state comprehensive detection method. The present application combines the air conditioner fan working frequency, working current, air conditioner outlet air speed and other parameters, obtains at least four dimensions of detection results through two kinds of horizontal comparison strategies and two kinds of vertical comparison strategies, and comprehensively analyzes the detection results of each dimension to obtain the final air conditioner fan working state conclusion. The present application can timely and accurately find the subtle abnormalities of the air conditioner fan, avoid serious failures and even production accidents, and provide reliable technical support for maintenance, thereby ensuring the safe, efficient and stable operation of the air conditioner unit fan.

[0004] In summary, the existing air conditioner outdoor unit detection method mostly detects the operating voltage, current and other circuit data of the air conditioner outdoor unit. For the external structure detection of the air conditioner fan, manual inspection is still needed to troubleshoot. The problem of the external structure of the air conditioner fan will directly affect the operation state of the air conditioner fan, and even affect the normal operation of the entire air conditioning system. SUMMARY

[0005] The present application aims to provide an air conditioner fan operation state comprehensive detection method to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: an air conditioner fan operation state comprehensive detection method, which includes fan fin integrity detection, fan air volume detection, transmission shaft runout detection and fin icing detection. The air conditioner fan is provided with fin detection sensors, flow sensors, position sensors and temperature sensors inside, respectively, for transmitting relevant data of each detection. A detection terminal is configured outside the air conditioner fan for feedback of the detection data.

[0007] Preferably, the fan fin integrity detection method is as follows:

[0008] S11: install the fin detection sensor on the inner wall of the top end of the air outlet of the air conditioner fan, so that the fin sensor is directly below the fin of the fan impeller;

[0009] S12: during the rotation of the impeller, the fin detection sensor emits infrared light on the impeller fin and transmits the measured distance data back to the detection terminal;

[0010] S13: the detection terminal analyzes the measurement data of the fin detection sensor to determine the integrity of the fin.

[0011] Preferably, in S11 of the fan fin integrity detection method:

[0012] The fin sensor uses an infrared distance sensor, and the number of fin sensors is three, the fin sensors are arranged in a straight line, corresponding to the two ends and the middle position of the fin, and are installed at the top end of the fan air outlet. When the fin rotates to the top end position of the air outlet, the surface of the fin is perpendicular to the light emitted by the fin sensor.

[0013] Preferably, in S13 of the fan fin integrity detection method:

[0014] During the rotation of the fan impeller, the fin sensor emits infrared light throughout the process, and the measured data parameters are transmitted back to the detection terminal. Three fin sensors draw three distance-time relationship curves. When the fin is damaged, the length of the infrared light emitted by the fin detection sensor changes, and an irregular fluctuation appears in the curve, prompting the staff to find the missing fin fault.

[0015] Preferably, the fan air volume detection method is as follows:

[0016] S21: install the flow sensor at the air inlet and air outlet positions of the air conditioner fan respectively, and connect the two flow sensors with the detection terminal respectively;

[0017] S22: during the operation of the air conditioner fan, the flow sensor detects the air flow at the air inlet and air outlet respectively;

[0018] S23: the detection terminal determines the air volume state according to the air flow ratio of the air inlet and air outlet.

[0019] Preferably, in S21 of the fan air volume detection method:

[0020] The air inlet and air outlet of the air conditioner fan are designed in a tubular structure, and the flow sensor is installed at the center position of the tubular structure.

[0021] Preferably, in S23 of the fan air volume detection method:

[0022] The staff determines the running state of the air conditioner fan according to the ratio of the air inlet airflow velocity and the air outlet airflow velocity displayed by the detection terminal, and the air inlet airflow velocity greater than the air outlet airflow velocity indicates that the air conditioner fan shell is damaged.

[0023] Preferably, the transmission shaft jump detection method is as follows:

[0024] S31: The position sensor is installed above the two ends of the transmission shaft of the air conditioner fan impeller, respectively;

[0025] S32: The two position sensors are connected with the detection terminal, respectively, to feedback the jump parameters of the transmission shaft in real time.

[0026] Preferably, based on the transmission shaft jump detection method S32:

[0027] The detection terminal sets the jump interval of the position sensor as 0.1-0.5mm, and if the transmission shaft jump distance is greater than 0.5mm, an alarm signal is sent to the detection terminal to prompt the staff that the impeller transmission shaft is abnormal.

[0028] Preferably, the fin icing detection method is as follows:

[0029] S41: The temperature sensor is installed at the top end of the air outlet of the air conditioner fan, and the temperature sensor is an infrared temperature sensor;

[0030] S42: The temperature sensor is connected with the detection terminal, and the temperature of the fin surface of the air conditioner fan impeller is detected in real time through the temperature sensor, and if the temperature is lower than the standard temperature, a fin icing alarm is sent.

[0031] Compared with the prior art, the beneficial effects of the present application are: the present application comprehensively detects the external fan of the air conditioning system, and through the real-time data feedback of the detection terminal, the fin integrity, the running air flow, the transmission shaft jump rate and the fin icing condition of the air conditioner fan can be obtained, the labor intensity of the staff for inspection is reduced, and at the same time, through the real-time data feedback of the detection terminal, the staff can carry out targeted maintenance according to the abnormal conditions of the detection items, and the maintenance efficiency is effectively improved. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] The present application provides four embodiments:

[0034] Embodiment one:

[0035] The air conditioner fan operation state comprehensive detection method includes fan fin integrity detection, fan air volume detection, transmission shaft runout detection, and fin icing detection. The air conditioner fan is provided with fin detection sensors, flow sensors, position sensors, and temperature sensors inside, respectively, for transmitting relevant data of each detection. The air conditioner fan is externally configured with a detection terminal for feedback detection data.

[0036] The fin icing detection method is as follows:

[0037] S41: Install the temperature sensor at the top of the air conditioner fan outlet. The temperature sensor is an infrared temperature sensor.

[0038] S42: Connect the temperature sensor with the detection terminal. Real-time temperature detection of the fin surface of the air conditioner fan impeller is performed through the temperature sensor. If the temperature is lower than the standard temperature, an icing alarm is issued.

[0039] In the case of using in a low outdoor environment temperature, if the temperature sensor detects that the temperature inside the air conditioner fan and the fin surface is too low, icing of the fin is likely to occur. An icing alarm is generated through the detection terminal to prompt the staff to perform deicing operations, avoiding the problem of low fin operation efficiency caused by fin icing.

[0040] Embodiment two:

[0041] The fan fin integrity detection method is as follows:

[0042] S11: Install the fin detection sensor on the inner wall of the top of the air conditioner fan outlet so that the fin sensor is directly above the fan impeller fin. The fin sensor is an infrared distance sensor, and the number of fin sensors is three. The fin sensors are arranged in a straight line and correspond to the two ends and the middle position of the fin. They are all installed at the top of the fan outlet. When the fin rotates to the top of the outlet, the fin surface is perpendicular to the light emitted by the fin sensor.

[0043] S12: During the rotation of the impeller, the fin detection sensor emits infrared light to irradiate on the impeller fin and transmits the measured distance data to the detection terminal.

[0044] S13: The detection terminal analyzes the measurement data of the fin detection sensor to determine the integrity of the fin.

[0045] In the rotating process of the fan impeller, the fin sensor emits infrared light throughout the process, and the measured data parameters are returned to the detection terminal. Three fin sensors draw three distance-time relationship curves. When the fin is damaged, the length of the infrared light emitted by the fin detection sensor changes, and an irregular fluctuation appears in the curve, prompting the staff of the fin shortage fault.

[0046] Example Three:

[0047] The fan air volume detection method is as follows:

[0048] S21: The flow sensor is installed at the air inlet and air outlet positions of the air conditioner fan, and the two flow sensors are connected with the detection terminal; the air inlet and air outlet of the air conditioner fan are designed in a tubular structure, and the flow sensor is installed at the center position of the tubular structure.

[0049] S22: The flow sensor detects the air flow of the air inlet and air outlet during the operation of the air conditioner fan;

[0050] S23: The detection terminal determines the air volume state according to the air flow ratio of the air inlet and air outlet; the staff determines the running state of the air conditioner fan according to the air flow ratio of the air inlet and air outlet displayed by the detection terminal. The air flow speed of the air inlet is greater than that of the air outlet, indicating that the air conditioner fan shell is damaged.

[0051] Example Four:

[0052] The transmission shaft runout detection method is as follows:

[0053] S31: The position sensor is installed above the two ends of the transmission shaft of the air conditioner fan impeller;

[0054] S32: The two position sensors are connected with the detection terminal to real-time feedback the runout parameters of the transmission shaft.

[0055] Based on the transmission shaft runout detection method S32:

[0056] The detection terminal sets the runout interval of the position sensor to 0.1-0.5mm, and the transmission shaft runout distance is greater than 0.5mm, then the detection terminal sends an alarm signal to prompt the staff that the impeller transmission shaft is abnormal.

[0057] Based on the external fan of the air conditioning system, through the real-time data feedback of the detection terminal, the fin integrity, running air flow, transmission shaft runout rate and fin icing condition of the air conditioner fan can be obtained, which reduces the labor intensity of the staff during the inspection. At the same time, through the real-time data feedback of the detection terminal, the staff can carry out targeted maintenance according to the abnormal conditions of the detection project, effectively improving the maintenance efficiency.

[0058] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A comprehensive detection method for the operating status of air conditioning fans, characterized in that: The system includes detection of fan fin integrity, fan airflow, drive shaft runout, and fin icing. The air conditioner fan is equipped with fin detection sensors, flow sensors, position sensors, and temperature sensors to transmit relevant data for each detection. An external detection terminal is also configured on the air conditioner fan to provide feedback on the detection data. The method for detecting the integrity of the fan fins is as follows: S11: Install the fin detection sensor on the inner wall at the top of the air outlet of the air conditioner fan, so that the bottom of the fin sensor is directly above the fan impeller fins. S12: During the impeller rotation, the fin detection sensor emits infrared light that shines on the impeller fins and transmits the measurement distance data back to the detection terminal. S13: The detection terminal analyzes the measurement data from the fin detection sensor to determine the integrity of the fin; The method for detecting drive shaft runout is as follows: S31: Install the position sensors above both ends of the drive shaft of the air conditioner fan impeller; S32: Connect the two position sensors to the detection terminal respectively to provide real-time feedback on the runout parameters of the drive shaft; Based on drive shaft runout detection method S32: The detection terminal sets the position sensor's runout range to 0.1-0.5mm. If the drive shaft runout distance is greater than 0.5mm, an alarm signal is sent to the detection terminal to alert the operator that the impeller drive shaft is malfunctioning.

2. The comprehensive detection method for the operating status of an air conditioning fan according to claim 1, characterized in that: In S11, based on the wind turbine fin integrity detection method: The fin sensor is an infrared distance sensor, and there are three fin sensors. The fin sensors are arranged in a straight line, corresponding to the two ends and the middle position of the fin, and are installed at the top of the air outlet of the fan. When the fin rotates to the top position of the air outlet, the light emitted by the fin surface and the fin sensor is perpendicular to each other.

3. The comprehensive detection method for the operating status of an air conditioning fan according to claim 1, characterized in that: In S13, based on the wind turbine fin integrity detection method: During the rotation of the wind turbine impeller, the fin sensors emit infrared light throughout the process, and the measured data parameters are transmitted back to the detection terminal. The three fin sensors plot three curves showing the relationship between distance and time. When a fin is damaged, the length of the infrared light emitted by the fin detection sensor changes, and abnormal fluctuations appear in the curve, indicating to the staff that a fin is missing.

4. The comprehensive detection method for the operating status of an air conditioning fan according to claim 1, characterized in that: The method for detecting the air volume of the fan is as follows: S21: Install the flow sensors at the air inlet and air outlet of the air conditioner fan, respectively, and connect the two flow sensors to the detection terminal. S22: During the operation of the air conditioner fan, the flow sensor detects the air flow at the air inlet and air outlet respectively; S23: The detection terminal determines the air volume status based on the airflow ratio between the air inlet and the air outlet.

5. The comprehensive detection method for the operating status of an air conditioning fan according to claim 1, characterized in that: In S21 based on the fan airflow detection method: The air inlet and outlet of the air conditioner fan are both designed with a tubular structure, and the flow sensors are respectively installed at the center of the tubular structure.

6. The comprehensive detection method for the operating status of an air conditioning fan according to claim 1, characterized in that: In S23 based on the fan airflow detection method: Staff determine the operating status of the air conditioner fan by measuring the ratio of the airflow velocity at the inlet to the airflow velocity at the outlet, as displayed on the testing terminal. If the airflow velocity at the inlet is greater than that at the outlet, it indicates that the air conditioner fan casing is damaged.

7. The comprehensive detection method for the operating status of an air conditioning fan according to claim 1, characterized in that: The method for detecting fin icing is as follows: S41: Install the temperature sensor at the top of the air outlet of the air conditioner fan. The temperature sensor is an infrared temperature sensor. S42: Connect the temperature sensor to the detection terminal and use the temperature sensor to detect the surface temperature of the air conditioner fan impeller fins in real time. If the temperature is lower than the standard temperature, an alarm for fin icing will be issued.