Air conditioner fan failure detection method and device

Abstract

The application discloses an air conditioner fan fault detection method and device, which comprises a fan shell, a first end frame, a controller, a grating, a light receiver, a transmission shaft, a driving motor, a second end frame, a first distance measuring sensor and a shaft sleeve, characterized in that: a wind inlet is arranged on the outer wall of one side of the fan shell, the inner wall of the wind inlet is welded with the second end frame, the inner wall of one side of the fan shell is welded with the first end frame, the driving motor is arranged between the first end frame and the second end frame, the bottom end of the second end frame is welded with an extension rod, the lower surface of the extension rod is installed with the grating, the upper surface of the positioning strip is installed with the light receiver, and the inner wall of one side of the first end frame and the second end frame is respectively installed with the second distance measuring sensor and the first distance measuring sensor. The application can respectively test the transmission shaft running stability and fin integrity of the air conditioner fan, does not need manual detection, can quickly identify the fault reason when the fan appears a fault, and reduces the detection time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner fan, in particular to an air conditioner fan fault detection method and device. BACKGROUND

[0002] The air conditioner fan belongs to the outdoor structure of the air conditioning system. The outdoor unit is responsible for refrigeration or heating, and the indoor unit is responsible for delivering cold air or hot air to the indoor, and transporting the hot air or cold air in the indoor to the outdoor through the pipeline to achieve the effect of cooling or heating.

[0003] In the factory air conditioning system, due to the large internal space of the factory, the specifications and power of the fan are large, so that the air conditioner fan used in the factory has certain differences in structure from the traditional household air conditioner fan. Because the industrial air conditioner fan runs at a high speed, after foreign matter is sucked into the inside, it is easy to cause damage to the fins, resulting in incomplete fins, and then affecting the pumping of the air volume. Secondly, under the condition of high intensity operation, the wear between the transmission shaft and the bearing is inevitable, and the wear of the transmission shaft will affect the balance of the impeller rotation. The unbalanced impeller running will produce abnormal noise or even the impeller is scrapped, increasing the maintenance cost of the fan.

[0004] After a large amount of retrieval, the prior art: CN114061046A is disclosed, a kind of air conditioner outer fan operating state detection method, device, equipment and system, relate to air conditioning technical field, this air conditioner outer fan operating state detection method, including: in the operating state detection process, the wind speed of the to-be-detected outer fan is acquired;Judge whether the wind speed of the to-be-detected outer fan reaches the set wind speed limit value;If the wind speed of the to-be-detected outer fan does not reach the set wind speed limit value within the set time length, the operation of the to-be-detected outer fan is abnormal. When the scheme provided in the embodiment of the present application is used for air conditioner outer fan operating state detection, the received wind speed transmitter signal is logically judged and output processed, the current detected wind speed and the corresponding wind speed limit value set according to different models are judged whether the wind speed test is qualified, and the wind speed detection process is standardized.

[0005] As described above, the detection direction of the existing air conditioner fan is only the running voltage, current and other series of electrical related items of the fan. For the mechanical type detection of the air conditioner fan, it mostly relies on manual detection. The rotating balance of the impeller and the integrity of the fins cannot be quickly and effectively monitored. SUMMARY

[0006] The purpose of the present application is to provide an air conditioner fan fault detection method and device to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: air conditioner fan fault detection method and device, including fan shell, first end frame, controller, grating, light receiver, transmission shaft, drive motor, second end frame, first distance sensor and shaft sleeve, characterized in that: the one side outer wall of the fan shell is provided with an air inlet, the inner wall of the air inlet is welded with the second end frame, the one side inner wall of the fan shell is welded with the first end frame, the drive motor is arranged between the first end frame and the second end frame, and the end plates are arranged on both sides of the drive motor, and the fins in circular array are welded between the two end plates;

[0008] The bottom end of the second end frame is welded with an extension rod, the grating is installed on the lower surface of the extension rod, the inner wall of the bottom end of the fan shell is provided with a positioning strip, the light receiver is installed on the upper surface of the positioning strip, and the first distance sensor and the second distance sensor are installed on the one side inner walls of the first end frame and the second end frame respectively.

[0009] Preferably, the inner walls of the first end frame and the second end frame are embedded with shaft sleeves, the drive motor is provided with transmission shafts at both ends, and the transmission shafts are inserted into the shaft sleeves at both ends respectively.

[0010] Preferably, the shaft sleeves are provided with bearings inside, and the first distance sensor and the second distance sensor are located above the transmission shafts respectively.

[0011] Preferably, the second distance sensor is provided below the speed sensor, and the controller is installed on the one side outer wall of the fan shell.

[0012] Preferably, the controller is integrated with a balance detection module, a completeness detection module, a speed control module and an alarm terminal inside.

[0013] Preferably, the first distance sensor and the second distance sensor are connected with the balance detection module, and the grating and the light receiver are connected with the completeness detection module;

[0014] The speed sensor is connected with the speed control module, the controller is connected with the drive motor, and the controller, the balance detection module, the completeness detection module and the speed control module are connected with the alarm terminal.

[0015] Preferably, the one side outer wall of the upper end of the fan shell is provided with an air outlet, and the fixed frame is connected between the outer wall of the drive motor and the second end frame.

[0016] Preferably, the grating and the light receiver are located corresponding to each other, and the grating and the light receiver are located on both sides of the fins respectively.

[0017] Preferably, the detection method is as follows:

[0018] S1: the controller executes a detection process, reduces the rotating speed of the driving motor through the controller, and executes balance detection and completion degree detection;

[0019] S2: the first distance measuring sensor and the second distance measuring sensor respectively detect the rotating run-out rates of the two ends of the transmission shaft, and transmit the run-out rate data to the balance detection module; after the run-out rate exceeds a threshold value, the balance detection module transmits a signal to the alarm terminal to perform alarm;

[0020] S3: the grating emits light to irradiate the inner wall of the fin; after the light receiver receives the light signal, a fin defect signal is output to the completion degree detection module, and a signal is sent to the alarm terminal through the completion degree detection module to perform alarm.

[0021] Preferably, the rotating speed sensor measures the rotating speed of the transmission shaft in real time, and the controller compares the set rotating speed value with the measured rotating speed.

[0022] Compared with the prior art, the beneficial effects of the present application are: the balance detection module is used to monitor the rotating run-out rates of the two ends of the transmission shaft in real time; the run-out rates generated at the two ends of the transmission shaft are compared to determine whether the transmission shaft has axis deviation; the stable rotation of the impeller can be ensured; after the transmission shaft is worn, the alarm can be given in time; the completion degree detection module detects the fin through the grating and the light receiver; if the light emitted by the grating is received by the light receiver, a fin missing signal is output; if the fin is missing, the air volume of the fan will be affected; the alarm terminal is used to alarm; the alarm signal can be quickly output to perform quick and unmanned fault detection. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a main sectional view structure schematic diagram of the fan shell of the present application;

[0024] Fig. 2 It is a first end frame sectional view enlarged structure schematic diagram of the present application;

[0025] Fig. 3 It is an electrical connection schematic diagram of the present application.

[0026] In the figure: 1, air outlet; 2, fan shell; 3, first end frame; 4, controller; 5, fin; 6, extension rod; 7, grating; 8, positioning strip; 9, light receiver; 10, air inlet; 11, transmission shaft; 12, driving motor; 13, fixing frame; 14, second end frame; 15, first distance measuring sensor; 16, shaft sleeve; 17, rotating speed sensor; 18, end plate; 19, second distance measuring sensor; 20, bearing; 21, balance detection module; 22, completion degree detection module; 23, speed control module; 24, alarm terminal. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0028] Please refer to Figs. 1 to 3 The present application provides two embodiments:

[0029] Embodiment one:

[0030] The air conditioner fan fault detection device comprises a fan shell 2, a first end frame 3, a controller 4, a grating 7, a light receiver 9, a transmission shaft 11, a driving motor 12, a second end frame 14, a first distance measuring sensor 15 and a shaft sleeve 16, characterized in that: the outer wall of one side of the fan shell 2 is provided with an air inlet 10, the inner wall of the air inlet 10 is welded with the second end frame 14, the inner wall of one side of the fan shell 2 is welded with the first end frame 3, the driving motor 12 is arranged between the first end frame 3 and the second end frame 14, and the driving motor 12 is provided with end plates 18 on both sides, and the two end plates 18 are welded with fins 5 arranged in a circular array.

[0031] The bottom end of the second end frame 14 is welded with an extension rod 6, the lower surface of the extension rod 6 is mounted with equidistantly distributed gratings 7, the inner wall of the bottom end of the fan shell 2 is provided with a positioning strip 8, the upper surface of the positioning strip 8 is mounted with a light receiver 9, and the inner walls of one side of the first end frame 3 and the second end frame 14 are respectively mounted with a second distance measuring sensor 19 and a first distance measuring sensor 15.

[0032] The inner walls of the first end frame 3 and the second end frame 14 are both embeddedly mounted with shaft sleeves 16, the driving motor 12 is provided with transmission shafts 11 at both ends, and the transmission shafts 11 are respectively inserted into the interiors of the shaft sleeves 16.

[0033] The interiors of the shaft sleeves 16 are both provided with bearings 20, and the first distance measuring sensor 15 and the second distance measuring sensor 19 are respectively located above the transmission shaft 11.

[0034] A rotating speed sensor 17 is arranged below the second distance measuring sensor 19, and the outer wall of one side of the fan shell 2 is mounted with the controller 4.

[0035] The controller 4 is integrated with a balance detection module 21, a completeness detection module 22, a speed control module 23 and an alarm terminal 24 in the interior.

[0036] The first distance sensor 15 and the second distance sensor 19 are connected with the balance detection module 21, and the grating 7 and the light receiver 9 are connected with the completeness detection module 22; the first distance sensor 15 and the second distance sensor 19 detect the rotation run-out rate of the two ends of the transmission shaft 11 respectively, and transmit the run-out rate data to the balance detection module 21; the balance detection module 21 transmits a signal to the alarm terminal 24 to alarm when the run-out rate exceeds a threshold value.

[0037] The rotation speed sensor 17 is connected with the speed control module 23, the controller 4 is connected with the driving motor 12, and the controller 4, the balance detection module 21, the completeness detection module 22 and the speed control module 23 are connected with the alarm terminal 24.

[0038] The fan shell 2 is provided with an air outlet 1 on one side of the upper end outer wall, and the driving motor 12 is connected with the second end bracket 14 through the fixing bracket 13.

[0039] The grating 7 and the light receiver 9 are located on the two sides of the fin 5 respectively, and the positions of the grating 7 and the light receiver 9 correspond to each other; the grating 7 emits light to irradiate on the inner wall of the fin 5; after the light receiver 9 receives the light signal, the fin 5 damage signal is output to the completeness detection module 22, and the signal is sent to the alarm terminal 24 through the completeness detection module 22 to alarm.

[0040] Embodiment two:

[0041] The detection method is as follows:

[0042] S1: the controller 4 executes the detection process, reduces the rotation speed of the driving motor 12 through the controller 4, and performs balance detection and completeness detection;

[0043] S2: the first distance sensor 15 and the second distance sensor 19 detect the rotation run-out rate of the two ends of the transmission shaft 11 respectively, and transmit the run-out rate data to the balance detection module 21; the balance detection module 21 transmits a signal to the alarm terminal 24 to alarm when the run-out rate exceeds a threshold value;

[0044] S3: the grating 7 emits light to irradiate on the inner wall of the fin 5; after the light receiver 9 receives the light signal, the fin 5 damage signal is output to the completeness detection module 22, and the signal is sent to the alarm terminal 24 through the completeness detection module 22 to alarm.

[0045] The rotation speed sensor 17 measures the rotation speed of the transmission shaft 11 in real time, and the controller 4 compares the set rotation speed value with the measured rotation speed.

[0046] 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. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. An air conditioner fan fault detection device, comprising a fan shell (2), a first end bracket (3), a controller (4), a grating (7), a light receiver (9), a transmission shaft (11), a drive motor (12), a second end bracket (14), a first distance measuring sensor (15) and a shaft sleeve (16), characterized in that: The fan shell (2) one side outer wall is provided with air inlet (10), the air inlet (10) inner wall is welded with second end frame (14), the fan shell (2) one side inner wall is welded with first end frame (3), the first end frame (3) and second end frame (14) between the drive motor (12) that is provided with, and drive motor (12) both sides are provided with end plate (18), two the end plate (18) between welding have the fin (5) of circular array distribution; The second end frame (14) bottom is welded with extension rod (6), the extension rod (6) lower surface is installed with equidistant distribution grating (7), the fan shell (2) bottom inner wall is provided with positioning strip (8), the positioning strip (8) upper surface is installed with light receiver (9), the first end frame (3) and second end frame (14) one side inner wall is installed with second distance sensor (19) and first distance sensor (15) respectively; The first end frame (3) and second end frame (14) inner wall are embedded with shaft sleeve (16), the drive motor (12) both ends are provided with transmission shaft (11), and transmission shaft (11) both ends are inserted in the inside of shaft sleeve (16) respectively; The shaft sleeve (16) inside is provided with bearing (20), the first distance sensor (15) and second distance sensor (19) are located above transmission shaft (11) respectively; The controller (4) is integrated with balance detection module (21), integrity detection module (22), speed control module (23) and alarm terminal (24) inside; The first distance sensor (15) and second distance sensor (19) are connected with balance detection module (21), the grating (7) and light receiver (9) are connected with integrity detection module (22); The rotation speed sensor (17) is connected with speed control module (23), the controller (4) is connected with drive motor (12), and the controller (4), balance detection module (21), integrity detection module (22), speed control module (23) are connected with alarm terminal (24).

2. The air conditioner fan fault detection apparatus of claim 1, wherein: The second distance sensor (19) below is provided with rotation speed sensor (17), the fan shell (2) one side outer wall is installed with controller (4).

3. The air conditioner fan fault detection apparatus of claim 1, wherein: The fan shell (2) upper end one side outer wall is provided with air outlet (1), the drive motor (12) outer wall is connected with fixed frame (13) between second end frame (14).

4. The air conditioner fan fault detection apparatus of claim 1, wherein: The grating (7) and light receiver (9) position correspond to each other, and the grating (7) and light receiver (9) are located on both sides of fin (5) respectively.

5. The detection method of the air-conditioner fan failure detection apparatus according to any one of claims 1 to 4, characterized by: The detection method is as follows: S1: the controller (4) executes detection process, the rotation speed of drive motor (12) is reduced by controller (4) control, and balance detection, completion degree detection are executed; S2: the first distance sensor (15) and second distance sensor (19) detect the rotation runout rate of transmission shaft (11) both ends respectively, and the runout rate data is transmitted to balance detection module (21), balance detection module (21) transmits signal to alarm terminal (24) after the runout rate exceeds threshold value, and alarm is given; S3: the grating (7) emits light to irradiate the inner wall of the fin (5), and after the light receiver (9) receives the light signal, outputs the fin (5) damage signal to the integrity detection module (22), and sends the signal to the alarm terminal (24) through the integrity detection module (22) to alarm.

6. The detection method of the air conditioner fan fault detection apparatus according to claim 5, characterized in that: The rotation speed sensor (17) measures the rotation speed of the transmission shaft (11) in real time, and the controller (4) compares the set rotation speed value with the measured rotation speed.

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