Automatic oiling control method and oiling system for oil fume exhaust fan

Abstract

The present invention belongs to the field of kitchen appliances, and specifically relates to an automatic oiling control method and oiling system for a range hood fan, comprising the following steps: setting the amount of lubricating oil to be filled and the filling cycle T according to initial values, collecting bearing temperature data; and adjusting the filling cycle T according to the detected fan bearing temperature. The present invention can perform effective and intelligent maintenance on the fan by monitoring the fan bearing temperature and operating time to adjust the filling cycle of automatic lubricating grease, thereby extending the service life of the fan and the bearing.

Description

Technical Field

[0001] The invention belongs to the field of kitchen appliances, and in particular relates to an automatic oiling control method and an oiling system for a range hood exhaust fan. Background Art

[0002] With people's growing demand for quality improvement and environmental protection, the demand for improvement of pain points such as smoke backflow and insufficient suction in catering oil fume has become increasingly strong. At present, oil fume purification system equipment generally does not have a backup fan, which requires the exhaust fan configured by the catering unit to operate continuously and effectively. The exhaust fan current and bearing temperature are important performance indicators of whether the fan is operating normally, and whether the bearing grease is at the normal oil level plays a key role in the bearing temperature: too little grease, insufficient lubrication effect, insufficient cooling effect, easy to cause bearing wear and shortened life; too much grease, resulting in increased bearing operation resistance and insufficient heat dissipation space, easy to cause bearing overheating and shortened life, and also cause grease overflow and pollute the environment. This brings hidden dangers to operating safety, environmental pollution and replacement costs of fan accessories.

[0003] The refueling method of existing equipment has the following disadvantages:

[0004] Disadvantage 1: Some box-type fans do not have a refueling hole, so it is necessary to stop the machine, disassemble the fan casing, and add bearing grease, which is very cumbersome.

[0005] Disadvantage 2: It is difficult to control the amount of grease when adding grease manually, which may cause overfilling or underfilling;

[0006] Disadvantage 3: Manual filling of bearing grease has uncertainty, cannot effectively monitor the operation of the fan, cannot accurately add oil to the fan bearing, and therefore cannot provide good protection for the fan bearing.

[0007] The above shortcomings increase the risk of unstable operation, hidden dangers of environmental pollution and the cost of replacing fan accessories. Summary of the invention

[0008] The purpose of the present invention is to provide an automatic refueling control method for an exhaust fume fan in order to make up for the deficiencies of the prior art. The control method adjusts the filling cycle of automatic lubricating grease by monitoring the fan bearing temperature and operating time to solve the problem that it is difficult to control the filling amount of grease when manually filling it.

[0009] Another object of the present invention is to provide an automatic oiling system for an exhaust fume fan.

[0010] The technical solution adopted by the present invention is:

[0011] A method for controlling automatic oiling of a fume exhaust fan, comprising:

[0012] S100: setting the amount of lubricating oil to be added and the filling cycle T according to the initial values, filling according to the filling cycle T, and collecting bearing temperature data;

[0013] S101: Adjust the filling cycle T according to the detected fan bearing temperature. The adjustment strategy is as follows:

[0014] S1010: If the fan bearing temperature value does not exceed the normal temperature value when filling according to the existing filling cycle T, the filling cycle T is increased or kept unchanged;

[0015] S1011: If the fan bearing temperature exceeds the normal temperature value during filling according to the existing filling cycle T, the filling cycle T is reduced.

[0016] Further,

[0017] The S100 specifically includes: setting the amount of lubricating oil to be added, the filling cycle T and the standard operation time t of the fan according to the initial values, filling according to the filling cycle T, and collecting the bearing temperature data and the actual operation time of the fan;

[0018] The S101 is specifically: adjusting the filling cycle T and the standard running time t of the fan according to the detected fan bearing temperature and the actual running time of the fan.

[0019] Further, in said S1010,

[0020] If the fan bearing temperature does not exceed the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is greater than or equal to the standard operation time t of the fan, it is judged that the existing filling frequency is too high and the filling cycle T is increased;

[0021] If the fan bearing temperature does not exceed the normal temperature value when filling according to the existing filling cycle T, and the actual fan operation time is less than the fan standard operation time t, then the existing filling frequency is judged to be appropriate, and the filling cycle T and the fan standard operation time t are kept unchanged.

[0022] Further, in said S1011,

[0023] If the fan bearing temperature exceeds the normal temperature value when oil is added according to the existing filling cycle T, and the actual operation time of the fan is less than the standard operation time t of the fan, it is judged that the existing standard operation time t of the fan is too high and the existing filling frequency is too low. The actual operation time t1 of the fan from oil filling to the time when the fan bearing temperature exceeds the normal temperature value is calculated and averaged, and the standard operation time t of the fan is set to t1. The time T2 from oil filling to the time when the fan bearing temperature exceeds the normal temperature value is calculated and averaged, and the filling cycle T is set to T2.

[0024] If the fan bearing temperature exceeds the normal temperature value during the existing filling cycle T, and the actual fan operating time is greater than or equal to the standard fan operating time t, then the existing filling frequency is judged to be too low, and the time T2 from each oil injection to the fan bearing temperature exceeding the normal temperature value is statistically and averagely calculated, and the filling cycle T=T2 is set.

[0025] Furthermore, in S1011, if the fan is filled according to the existing filling cycle T and the actual operating time of the fan is less than the standard operating time t of the fan, it is first determined whether the fan has other fault signals. After eliminating other fault signals, it is determined that the standard operating time t of the fan is too high. Then, the actual operating time t1 of the fan when the bearing is overheated is counted and calculated, and the standard operating time t=t1 of the fan is set.

[0026] Furthermore, the control method further includes:

[0027] S102: After filling M times according to the new filling cycle T, execute S101 again.

[0028] Furthermore, the S103 is specifically as follows: accumulating the cumulative number of refueling times and comparing it with "total reserve / single refueling amount", when the ratio is greater than A, prompting the user to refill the oil cup, the range of A is 70-100%, and A is preferably 90%.

[0029] Compared with the prior art, the automatic oiling control method for an exhaust fume fan provided by the present invention can adjust the filling cycle of automatic lubricating grease by monitoring the temperature and operating time of the fan bearing, thereby effectively and intelligently maintaining the fan and extending the service life of the fan and the bearing.

[0030] An automatic oiling system for an exhaust fan adopts the above-mentioned automatic oiling control method, comprising a grease storage module, a grease delivery module, a grease injection module and an intelligent control module; the grease delivery module is used to deliver the grease stored in the grease storage module to the grease injection module; the intelligent control module comprises a temperature measuring unit and a control unit; the temperature measuring unit is used to detect the temperature of the fan bearing; and the control unit is used to control the operation of the grease delivery module.

[0031] Furthermore, the grease storage module includes a grease cup.

[0032] Furthermore, the grease delivery module includes an electric grease pump, and the electric grease pump is used to deliver the grease stored in the grease storage module to the grease injection module.

[0033] Furthermore, the grease delivery module also includes a pressure gauge, which is used to detect the pressure at the outlet of the electric grease pump to display the operating status of the electric grease pump.

[0034] Furthermore, the grease delivery module also includes an oil guide pipe, which is used to connect the electric grease pump and the grease injection module.

[0035] Furthermore, the grease injection module includes an oil filling pipe arranged in the fan housing, and the oil filling pipe is used to transport the grease transported by the grease delivery module into the bearing box.

[0036] Furthermore, the grease injection module also includes a case oil filling hole arranged on the fan case and a bearing oil filling nozzle arranged on the bearing box, and the two are connected by an oil filling pipe; the case oil filling hole is used to receive the grease transmitted from the grease delivery module and deliver it to the oil filling pipe; the oil filling pipe is used to deliver the grease to the bearing oil filling nozzle; the bearing oil filling nozzle is used to deliver the grease to the fan bearing to lubricate and cool the fan bearing.

[0037] Furthermore, the intelligent control module also includes a cloud platform, which collects fan operation data and bearing temperature data to form a database, and transmits instructions to the fan and control unit according to the database; the control unit is used to control the operation of the electric grease pump.

[0038] Compared with the prior art, the automatic oiling system for range fume fans provided by the present invention can realize the automatic oiling of range fume box-type fans. It can automatically add lubricating grease according to a certain filling amount and filling cycle through cloud platform instructions, solving the difficult problem of adding bearing grease without stopping the machine and disassembling the fan casing, avoiding the situations of forgetting to add, adding too little or adding too much grease due to human operating errors, effectively reducing bearing wear and overheating, effectively increasing bearing life, reducing bearing replacement costs, increasing fan operation stability, reducing the possibility of environmental pollution, reducing labor costs and maintenance costs, and making oil management controllable and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 A flow chart of an automatic oiling control method for a fume exhaust fan provided in Example 1 of the present invention;

[0041] Figure 2 A schematic diagram of an automatic oiling system for a fume exhaust fan provided in Example 2 of the present invention;

[0042] Figure 3This is a schematic structural diagram of an automatic oiling system for an exhaust fume fan provided in Example 2 of the present invention.

[0043] In the figure: 1-grease pump oil cup, 2-dynamic grease pump, 3-pressure gauge, 4-oil inlet pipe, 5-box oil filling hole, 6-oil filling pipe, 7-bearing oil filling nozzle, 8-bearing box, 9-temperature measuring unit, 10-control unit, 11-fan box, 12-fan, 13-cloud platform, 14-database, 100-grease storage module, 200-grease delivery module, 300-grease injection module, 400-intelligent control module. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] Example 1

[0047] Figure 1 A flow chart showing an automatic oiling control method for an exhaust fan of this embodiment is shown. The control method comprises the following steps:

[0048] S100: Set the amount of lubricating oil to be added, the filling cycle T and the standard operation time t of the fan according to the initial values, and fill the oil according to the filling cycle T. After filling N times, collect the actual operation time of the fan and the bearing temperature data, and count the time when the fan bearing temperature value exceeds the normal temperature value of the fan bearing after each filling to when the fan is running. The value of N can be set according to actual needs;

[0049] S101: According to the detected fan bearing temperature and the actual fan operation time, the filling cycle T and the fan standard operation time t are adjusted. The adjustment strategy is as follows:

[0050] S1010: If the fan bearing temperature value does not exceed the normal temperature value when filling according to the existing filling cycle T, the filling cycle T is increased or kept unchanged, specifically:

[0051] If the fan bearing temperature does not exceed the normal temperature value when the fan is filled according to the existing filling cycle T, and the actual operation time of the fan is greater than or equal to the standard operation time t of the fan, then it is judged that the existing filling frequency is too high, and the filling cycle T is increased. The specific increase time can be set according to actual needs;

[0052] If the fan bearing temperature does not exceed the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is less than the standard operation time t of the fan, then it is judged that the existing filling frequency is appropriate, and the filling cycle T and the standard operation time t of the fan are kept unchanged;

[0053] S1011: If the fan bearing temperature exceeds the normal temperature value during the existing filling cycle T, the filling cycle T is reduced, specifically:

[0054] If the fan bearing temperature exceeds the normal temperature value when the fan is filled according to the existing filling cycle T, and the actual operation time of the fan is less than the standard operation time t of the fan, first determine whether the fan has other fault signals. After eliminating other fault signals, determine that the standard operation time t of the fan is too high and the existing filling frequency is too low. Then, count and calculate the actual operation time t1 of the fan when the bearing is overheated, set the standard operation time t=t1, count and average the time T2 from oil filling to the fan bearing temperature exceeding the normal temperature value each time, and set the filling cycle T=T2;

[0055] If the fan bearing temperature exceeds the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is greater than or equal to the standard operation time t of the fan, then it is judged that the existing filling frequency is too low, and the time T2 from each oil filling to the fan bearing temperature exceeding the normal temperature value is counted and averaged, and the filling cycle T=T2 is set;

[0056] S102: After filling M times according to the new filling cycle T, S101 is executed again, and the value of M can be set according to actual needs.

[0057] S103: When the oil storage amount of the oil cup is too low, the user is prompted to refill the oil cup.

[0058] Further, S103 is specifically as follows: accumulating the cumulative number of refueling times and comparing it with "total reserve / single refueling amount", when the ratio is greater than A, prompting the user to refill the oil cup, the range of A is 70-100%, and A is preferably 90%.

[0059] In other embodiments, when it is known that the oil storage amount of the oil cup is too low, the oil cup can be automatically filled. Automatic filling is a conventional technology and will not be described in detail here.

[0060] The critical value of the fan bearing exceeding the normal temperature in this embodiment is preset. This embodiment adjusts the grease filling cycle by detecting the fan bearing temperature and the actual operating time of the fan. On the one hand, when the fan bearing temperature exceeds the normal temperature value, the filling cycle T can be reduced in time and the filling frequency can be increased to avoid the situation of too little grease. On the other hand, when the fan bearing temperature does not exceed the normal temperature value, it is judged according to the actual operating time of the fan whether the filling is too frequent. When it is judged that the filling is too frequent, the filling time period is increased in time and the filling frequency is reduced to avoid the situation of too much grease. In addition, this embodiment can also adjust the fan standard operating time t in time to avoid misjudgment, so that the grease filling cycle is kept at an appropriate frequency as much as possible.

[0061] Example 2

[0062] See also Figure 2-3 The present embodiment provides an automatic oiling system for an exhaust fan, which adopts the oiling control method of the embodiment, and includes a grease storage module 100, a grease delivery module 200, a grease injection module 300 and an intelligent control module 400. The grease delivery module 200 is used to deliver the grease stored in the grease storage module 100 to the grease injection module 300. The intelligent control module 400 includes a temperature measuring unit 9 and a control unit 10. The temperature measuring unit 9 is used to detect the temperature of the fan bearing, and the control unit 10 is used to control the operation of the grease delivery module 200. The temperature measuring unit 9 is preferably a resistance temperature detector. In addition, the temperature measuring unit 9 can also be a thermocouple temperature sensor, a thermistor temperature sensor or an IC temperature sensor.

[0063] Furthermore, the grease storage module 100 includes a grease cup 1, which is used to store grease for the fume exhaust box fan bearings. The grease filling amount required for the fan operating bearings each month when set at the factory is determined according to the fan model specifications, and the capacity of the grease pump cup 1 is determined according to the 12-month reserve.

[0064] Furthermore, the grease delivery module 200 includes an electric grease pump 2, a pressure gauge 3 and an oil guide pipe 4. The electric grease pump 2 is electrically connected to the control unit 10, and is used to deliver the grease stored in the grease storage module 100 to the grease injection module 300. The pressure gauge 3 is used to detect the pressure at the outlet of the electric grease pump 2 to display the operation status of the electric grease pump 2. The oil guide pipe 4 is used to connect the electric grease pump 2 and the grease injection module 300. The type of the electric grease pump 2 with control is selected according to the performance parameters such as the model and kinematic viscosity of the fan bearing grease.

[0065] Furthermore, the grease storage module 100 and the grease delivery module 200 are located outside the fan housing 11. The grease injection module 300 includes a housing oil filling hole 5 provided on the fan housing 11, a bearing oil filling nozzle 7 provided on the bearing housing 8, and an oil filling pipe 6 for connecting the two. The housing oil filling hole 5 is used to receive the grease transmitted from the grease delivery module 200 and deliver it to the oil filling pipe 6. The oil filling pipe 6 is used to deliver the grease to the bearing oil filling nozzle 7. The bearing oil filling nozzle 7 is used to deliver the grease to the fan bearing to lubricate and cool the fan bearing.

[0066] The box oil filling hole 5 outside the fan box 11 can also be connected to a manual refueling gun. When the present embodiment fails and cannot be refueled normally, the manual refueling gun can be used to add lubricating grease, which provides an effective plan for the failure of the refueling device.

[0067] Furthermore, the intelligent control module 400 also includes a cloud platform 13, which is a well-known intelligent platform that integrates functions such as wireless data communication, remote monitoring, and centralized equipment control. It is electrically connected to the control unit 10, the fan 10, and the temperature measurement unit 10, respectively, and collects the fan operation data and bearing temperature data to form a database 14. The cloud platform 13 transmits instructions to the fan 12 and the control unit 10 according to the database 14.

[0068] The working process of grease filling in this embodiment is as follows: the electric grease pump 2 pumps the lubricating grease in the grease cup 1 to the oil filling hole 5 of the casing, flows to the bearing oil filling nozzle 7 through the oil filling pipe 6, and finally is filled into the fan bearing through the bearing oil filling nozzle 7 to lubricate and cool the fan bearing.

[0069] The fume exhaust box fan including the present embodiment does not require manual refueling during use. Lubricating grease can be automatically refilled according to a certain refueling amount and refueling cycle through the cloud platform 13 instructions, thereby avoiding the situation of forgetting to refuel, adding too little or adding too much grease due to manual operation errors, effectively reducing bearing wear and overheating, effectively increasing bearing life, reducing bearing replacement costs, increasing fan operation stability, and reducing the possibility of environmental pollution.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling automatic oiling of a range hood fan, characterized in that: include: S100: setting the amount of lubricating oil to be added and the filling cycle T according to the initial values, filling according to the filling cycle T, and collecting bearing temperature data; S101: Adjust the filling cycle T according to the detected fan bearing temperature. The adjustment strategy is as follows: S1010: If the fan bearing temperature value does not exceed the normal temperature value when filling according to the existing filling cycle T, the filling cycle T is increased or kept unchanged; S1011: If the fan bearing temperature exceeds the normal temperature value during filling according to the existing filling cycle T, the filling cycle T is reduced; The S100 specifically includes: setting the amount of lubricating oil to be added, the filling cycle T and the standard operation time t of the fan according to the initial values, filling according to the filling cycle T, and collecting the bearing temperature data and the actual operation time of the fan; The S101 specifically includes: adjusting the filling cycle T and the standard operation time t of the fan according to the detected fan bearing temperature and the actual operation time of the fan; In the S1011, if the fan bearing temperature value exceeds the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is less than the standard operation time t of the fan, it is judged that the existing standard operation time t of the fan is too high and the existing filling frequency is too low, and the actual operation time t1 of the fan from oil filling to the time when the fan bearing temperature value exceeds the normal temperature value is calculated and averaged, and the standard operation time of the fan t=t1 is set, and the time T2 from oil filling to the time when the fan bearing temperature value exceeds the normal temperature value is calculated and averaged, and the filling cycle T=T2 is set; if the fan bearing temperature value exceeds the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is greater than or equal to the standard operation time t of the fan, it is judged that the existing filling frequency is too low, and the time T2 from each oil filling to the time when the fan bearing temperature value exceeds the normal temperature value is calculated and averaged, and the filling cycle T=T2 is set; In S1011, if the fan is filled according to the existing filling cycle T and the actual running time of the fan is less than the standard running time t of the fan, it is first determined whether the fan has other fault signals. After eliminating other fault signals, it is determined that the standard running time t of the fan is too high. Then, the actual running time t1 of the fan when the bearing is overheated is counted and calculated, and the standard running time t=t1 of the fan is set.

2. The automatic oiling control method for a range hood fan according to claim 1, characterized in that: In the S1010, If the fan bearing temperature does not exceed the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is greater than or equal to the standard operation time t of the fan, it is judged that the existing filling frequency is too high and the filling cycle T is increased; If the fan bearing temperature does not exceed the normal temperature value during the existing filling cycle T, and the actual fan operation time is less than the fan standard operation time t, then the existing filling frequency is judged to be appropriate, and the filling cycle T and the fan standard operation time t are kept unchanged.

3. The automatic oiling control method for a range hood fan according to claim 1, characterized in that: The control method further comprises: S102: After filling M times according to the new filling cycle T, execute S101 again.

4. The automatic oiling control method for a range hood fan according to any one of claims 1 to 3, characterized in that: The control method further includes S103: When the oil storage level in the oil cup is too low, the user is prompted to refill the oil cup or the oil cup is automatically refilled.

5. The automatic oiling control method for a range hood fan according to claim 4, characterized in that: The S103 is specifically as follows: accumulating the cumulative number of refueling times and comparing it with "total reserve / single refueling amount". When the ratio is greater than A, the user is prompted to refill the oil cup. The range of A is 70-100%.

6. An automatic oiling system for a range hood fan, characterized in that: The invention comprises a grease storage module (100), a grease delivery module (200), a grease injection module (300) and an intelligent control module (400); the grease delivery module (200) is used to deliver the grease stored in the grease storage module (100) to the grease injection module (300); the intelligent control module (400) comprises a temperature measuring unit (9) and a control unit (10); the temperature measuring unit (9) is used to detect the temperature of the fan bearing; the control unit (10) is used to control the operation of the grease delivery module (200); The automatic oiling system for the oil fume exhaust fan is used to execute the automatic oiling control method for the oil fume exhaust fan according to any one of claims 1 to 5, and the automatic oiling control method for the oil fume exhaust fan comprises: S100: setting the amount of lubricating oil to be added and the filling cycle T according to the initial values, filling according to the filling cycle T, and collecting bearing temperature data; S101: Adjust the filling cycle T according to the detected fan bearing temperature. The adjustment strategy is as follows: S1010: If the fan bearing temperature value does not exceed the normal temperature value when filling according to the existing filling cycle T, the filling cycle T is increased or kept unchanged; S1011: If the fan bearing temperature exceeds the normal temperature value during filling according to the existing filling cycle T, the filling cycle T is reduced; The S100 specifically includes: setting the amount of lubricating oil to be added, the filling cycle T and the standard operation time t of the fan according to the initial values, filling according to the filling cycle T, and collecting the bearing temperature data and the actual operation time of the fan; The S101 specifically includes: adjusting the filling cycle T and the standard operation time t of the fan according to the detected fan bearing temperature and the actual operation time of the fan; In the S1011, if the fan bearing temperature value exceeds the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is less than the standard operation time t of the fan, it is judged that the existing standard operation time t of the fan is too high and the existing filling frequency is too low, and the actual operation time t1 of the fan from oil filling to the time when the fan bearing temperature value exceeds the normal temperature value is calculated and averaged, and the standard operation time of the fan t=t1 is set, and the time T2 from oil filling to the time when the fan bearing temperature value exceeds the normal temperature value is calculated and averaged, and the filling cycle T=T2 is set; if the fan bearing temperature value exceeds the normal temperature value when filling according to the existing filling cycle T, and the actual operation time of the fan is greater than or equal to the standard operation time t of the fan, it is judged that the existing filling frequency is too low, and the time T2 from each oil filling to the time when the fan bearing temperature value exceeds the normal temperature value is calculated and averaged, and the filling cycle T=T2 is set; In S1011, if the fan is filled according to the existing filling cycle T and the actual running time of the fan is less than the standard running time t of the fan, it is first determined whether the fan has other fault signals. After eliminating other fault signals, it is determined that the standard running time t of the fan is too high. Then, the actual running time t1 of the fan when the bearing is overheated is counted and calculated, and the standard running time t=t1 of the fan is set.

7. The automatic oiling system for the range fumes exhaust fan according to claim 6, characterized in that: The lubricating grease storage module (100) comprises a lubricating grease cup (1).

8. The automatic oiling system for a range hood fan according to claim 6, characterized in that: The grease delivery module (200) comprises an electric grease pump (2), and the electric grease pump (2) is used to deliver the grease stored in the grease storage module (100) to the grease injection module (300).

9. The automatic oiling system for the range fumes exhaust fan according to claim 8, characterized in that: The grease delivery module (200) further comprises a pressure gauge (3), wherein the pressure gauge (3) is used to detect the pressure at the outlet of the electric grease pump (2) so as to display the operating condition of the electric grease pump (2).

10. The automatic oiling system for a range hood fan according to claim 8, characterized in that: The lubricating grease delivery module (200) further comprises an oil inlet pipe (4), wherein the oil inlet pipe (4) is used to connect the electric grease pump (2) and the lubricating grease injection module (300).

11. The automatic oiling system for a range hood fan according to claim 6, characterized in that: The grease injection module (300) comprises an oil injection pipe (6) arranged in the fan housing (11), and the oil injection pipe (6) is used to transport the grease transported by the grease transport module (200) into the bearing box (8).

12. The automatic oiling system for a range hood fan according to claim 11, characterized in that: The grease injection module (300) further comprises a housing oil filling hole (5) arranged on the fan housing (11) and a bearing oil filling nozzle (7) arranged on the bearing housing (8), the two being connected via an oil filling pipe (6); the housing oil filling hole (5) is used to receive the grease transmitted from the grease delivery module (200) and deliver it to the oil filling pipe (6); the oil filling pipe (6) is used to deliver the grease to the bearing oil filling nozzle (7); the bearing oil filling nozzle (7) is used to deliver the grease to the fan bearing to lubricate and cool the fan bearing.

13. An automatic oiling system for a range hood fan according to any one of claims 6 to 12, characterized in that: The intelligent control module (400) further comprises a cloud platform (13), wherein the cloud platform (13) collects fan operation data and bearing temperature data and forms a database (14), and the cloud platform (13) transmits instructions to the control unit (10) according to the database (14).

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