A brushless condenser fan and control method

Abstract

The application discloses a brushless condensing fan and a control method, and relates to the technical field of condensing fans, which comprises a shell and a control module, the inner wall of the shell is fixedly connected with a support, the inner wall of the support is fixedly connected with a brushless fan, the brushless fan can output airflow to the rear side of the shell, the outer wall of the shell is fixedly connected with a fixed plate, the inner wall of the fixed plate is fixedly connected with an infrared temperature monitoring module, the infrared temperature monitoring module is used for monitoring the temperature of the heat dissipation fins of a condenser, the infrared temperature monitoring module is electrically connected with the control module, and the outer side of the shell is further provided with a control mechanism. The infrared temperature monitoring module and the control module are arranged, the speed of the brushless fan can be adjusted in real time according to the surface temperature of the heat dissipation fins of the condenser, dynamic heat dissipation control is realized, the speed is increased to enhance the heat dissipation efficiency when the temperature of the fins is high, the energy waste is reduced, and the system operation reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of condensing fan, in particular to a brushless condensing fan and a control method. BACKGROUND

[0002] The condensing fan is widely used in air conditioning, refrigeration and industrial heat exchange systems, as a core heat dissipation component, its running state directly affects the heat exchange efficiency and energy consumption level of the whole system. The existing condensing fan mostly adopts constant power or fixed speed operation mode, which is difficult to adjust the working state in real time according to the external environment change and load demand, and is easy to cause the problems of high energy consumption or insufficient heat dissipation efficiency. Especially under the conditions of long-term operation of condenser or high temperature load, the fan power consumption fluctuates sharply, which not only reduces the system energy efficiency ratio, but also easily causes overheating of equipment, shortens the service life and other hidden troubles.

[0003] The existing patent with publication number CN106224268B discloses a permanent magnet brushless DC variable frequency axial flow fan. The device solves the integration of fan, motor and controller through the design of fan frame, impeller, aluminum alloy heat dissipation frame and cover disc, and solves the problems of VMOS power tube assembly and heat dissipation. However, under the working condition of condenser, the factors affecting the power of fan and the temperature of machine body often come from the condenser heat dissipation fins and the working environment of machine body. Although the device uses the back electromotive force detection technology, it still has defects in energy consumption stability under different working conditions, especially when dealing with short-time high temperature, rapid heat dissipation demand or complex working condition switching, the system is difficult to maintain the dynamic balance of fan power consumption, and there is still a lot of room for improvement.

[0004] Therefore, it is urgent to provide a control method capable of realizing stable regulation and control of fan power consumption, so as to reduce energy waste and improve the reliability of system operation while ensuring heat dissipation performance. SUMMARY

[0005] The present application aims to provide a brushless condensing fan and a control method to solve the problems in the background art.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a brushless condensing fan, comprising a shell and a control module, the inner wall of the shell is fixedly connected with a support, the inner wall of the support is fixedly connected with a brushless fan, and the brushless fan can output air flow to the rear side of the shell.

[0007] The outer wall of the shell is fixedly connected with a fixed plate, the inner wall of the fixed plate is fixedly connected with an infrared temperature monitoring module, the infrared temperature monitoring module is used for monitoring the temperature of condenser heat dissipation fins, and the infrared temperature monitoring module is electrically connected with the control module.

[0008] The outer side of the shell is also provided with a control mechanism;

[0009] The input direction of the infrared temperature monitoring module is consistent with the output direction of the brushless fan.

[0010] According to the above technical scheme, the control mechanism includes a liquid tank, the liquid tank is located on the front side of the shell, the inner wall of the liquid tank is fixedly connected with the outer wall of the shell, the outer side of the liquid tank is fixedly connected with a liquid pump, one end of the liquid pump is fixedly connected with a first connecting pipe, one end of the first connecting pipe is fixedly connected with the outer wall of the liquid tank, the inside of the liquid tank is in communication with one end of the liquid pump through the first connecting pipe, the other end of the liquid pump is fixedly connected with a second connecting pipe, the end of the second connecting pipe away from the liquid pump penetrates through the shell and extends to the back side of the brushless fan inside the shell, the back side of the brushless fan is fixedly connected with a heat absorption cavity, one side of the heat absorption cavity is fixedly connected with a third connecting pipe, the end of the third connecting pipe away from the heat absorption cavity penetrates through the shell and is fixedly connected with the outer wall of the liquid tank on the outer side of the shell, and the inside of the heat absorption cavity is in communication with the inside of the liquid tank through the third connecting pipe.

[0011] According to the above technical scheme, the liquid tank is a ring-shaped hollow structure, the liquid tank is made of elastic rubber material, the heat absorption cavity is a ring-shaped hollow structure, and the heat absorption cavity is made of metal material, and the back side of the heat absorption cavity is provided with a heat dissipation mechanism.

[0012] According to the above technical scheme, the liquid pump is electrically connected with the control module, and the two ends of the liquid pump can be switched between the output end and the input end.

[0013] According to the above technical scheme, the heat dissipation mechanism includes an elastic film, the inner wall of the elastic film is fixedly connected with a hydraulic cavity on the front side, a support rod is inserted into the inner wall of the hydraulic cavity, the back end of the support rod is fixedly connected with the inner wall of the elastic film on the back side, a fourth connecting pipe is fixedly connected with the inner wall of the hydraulic cavity, a pressure valve is arranged in the fourth connecting pipe, the other end of the fourth connecting pipe extends out of the hydraulic cavity, the elastic film and is in communication with the inside of the heat absorption cavity, and the inside of the hydraulic cavity is in communication with the end of the second connecting pipe away from the liquid pump.

[0014] According to the above technical scheme, the back side of the heat absorption cavity is fixedly connected with a support block, the back end of the support block is embedded in the inside of the front side of the hydraulic cavity, the back side of the heat absorption cavity is also fixedly connected with a spring, and the back end of the spring is fixedly connected with the front side of the hydraulic cavity.

[0015] According to the above technical scheme, the support rod can slide in the front-rear direction relative to the hydraulic cavity, and the outer wall of the elastic film is in the shape of a water droplet with a smaller diameter on the back side and a larger diameter on the front side after the support rod moves backward.

[0016] A brushless condenser fan control method comprises the following five steps:

[0017] Step one: real-time monitoring of the temperature of the condenser heat dissipation fin surface by the infrared temperature monitoring module, and transmitting the detection results to the control module;

[0018] Step two: the control module automatically adjusts the speed of the brushless fan motor according to the temperature change of the heat dissipation fin, increases the fan speed when the fin temperature rises, and reduces the fan speed when the temperature decreases, to realize energy consumption control;

[0019] Step three: the control module calculates the power consumption and speed ratio of the brushless fan during operation in real time, and when the ratio deviates from the preset threshold, it is judged that the motor temperature rise is abnormal, and the cooling control step is entered;

[0020] Step four: starting the liquid pump to extract liquid from the liquid capsule cavity, and delivering it to the heat absorption cavity through the second connecting pipe, so that the cooling liquid absorbs and carries away the heat generated by the brushless fan, reducing the operating temperature of the brushless fan;

[0021] Step five: when the fin temperature drops slowly, further drive the support rod by controlling the hydraulic pressure to change the elastic film into a water droplet structure, guide the airflow to impact the surface of the heat dissipation fin at high speed to enhance the heat exchange efficiency, and cause local disturbance by pulse control to remove the attached objects and diffuse the heat accumulation area, thereby improving the overall heat dissipation effect.

[0022] Compared with the prior art, the beneficial effects achieved by the present application are: by setting the infrared temperature monitoring module and the control module, the speed of the brushless fan can be adjusted in real time according to the temperature of the condenser heat dissipation fin surface, dynamic heat dissipation control is realized, the speed is increased to enhance the heat dissipation efficiency when the fin temperature is high, and the speed is reduced to reduce the energy consumption when the fin temperature is low, thereby effectively reducing energy waste and prolonging the service life of the fan;

[0023] By setting the liquid cooling channel structure composed of a liquid capsule, a liquid pump, a first connecting pipe, a second connecting pipe, a heat absorption cavity and a third connecting pipe, when the brushless fan runs for a long time under high load and the temperature rises abnormally, the cooling liquid circulation is automatically started, the heat is quickly carried away by the heat absorption cavity of metal material, the motor temperature rise is effectively controlled, and the operation stability and safety are guaranteed;

[0024] By setting the deformable water droplet-shaped jet structure composed of an elastic film, a hydraulic chamber, a support rod and a fourth connecting pipe, when the heat dissipation efficiency is insufficient, the speed of the brushless fan can be increased and the support rod can be moved backward to form a water droplet profile, the airflow is guided to impact the surface of the condenser fin to remove the attached objects, and the local heat exchange efficiency is improved, achieving the purpose of quickly enhancing the heat dissipation capacity;

[0025] By setting the limiting and supporting mechanism composed of supporting blocks and springs, and combining with the liquid pump pulse pump liquid control mode, the hydraulic chamber generates small amplitude swing under the hydraulic pulse, drives the elastic film to guide the four-way diffusion of airflow to clear the hot gas accumulation area, and the wind blade vibration shakes off the adhering matter, further enhances the cooling efficiency and operation stability, and has fault alarm capability, ensures the intelligent and safe operation of the system. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0028] Figure 2 is a schematic diagram of the rear side structure of the present application;

[0029] Figure 3 is a schematic diagram of the split structure of the present application;

[0030] Figure 4 is a schematic diagram of the shell cross-section structure of the present application;

[0031] Figure 5 is a schematic diagram of the internal structure of the elastic film of the present application;

[0032] Figure 6 is a schematic diagram of the enlarged structure of A in the present application Figure 5

[0033] In the figure: 1 shell, 2 support, 3 brushless fan, 4 fixed plate, 5 infrared temperature monitoring module, 6 control mechanism, 601 liquid bag, 602 liquid pump, 603 first connecting pipe, 604 second connecting pipe, 605 heat absorption cavity, 606 third connecting pipe, 607 heat dissipation mechanism, 701 elastic film, 702 hydraulic chamber, 703 supporting rod, 704 fourth connecting pipe, 705 supporting block, 706 spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0035] Embodiment one: please refer to Figures 1-2 ​The application provides the technical scheme: a brushless condenser fan, comprising a shell 1 and a control module, the inner wall of the shell 1 is fixedly connected with a support 2, the inner wall of the support 2 is fixedly connected with a brushless fan 3, the brushless fan 3 can output airflow to the rear side of the shell 1, the outer wall of the shell 1 is fixedly connected with a fixed plate 4, the inner wall of the fixed plate 4 is fixedly connected with an infrared temperature monitoring module 5, the infrared temperature monitoring module 5 is used for monitoring the temperature of condenser cooling fins, and the infrared temperature monitoring module 5 is electrically connected with the control module, and the outer side of the shell 1 is also provided with a control mechanism 6, and the input direction of the infrared temperature monitoring module 5 is consistent with the output direction of the brushless fan 3.

[0036] In the practical application process of the device, the surface temperature of the condenser cooling fin is monitored in real time by the infrared temperature monitoring module 5, the speed and real-time power of the brushless fan 3 are monitored by the control module, and the speed of the brushless fan 3 is adjusted by the control module after the surface temperature of the cooling fin is obtained by the infrared temperature monitoring module 5, when the temperature of the cooling fin is high, the speed of the brushless fan 3 is increased, and then the cooling efficiency is improved, when the temperature of the cooling fin is low, the speed of the brushless fan 3 is reduced, and then the working energy consumption of the brushless fan 3 is adjusted, and energy waste is reduced.

[0037] The brushless condenser fan disclosed by the application has the advantages of compact structure, convenient installation and strong adaptability, a dynamic regulation and control closed loop system is constructed by the infrared temperature monitoring module 5 and the control module, not only the real-time sensing of the condenser cooling process is realized, but also the fan operation parameters are intelligently adjusted based on actual needs, so that the cooling efficiency is ensured while the excessive energy consumption is avoided, and the application is particularly suitable for scenes with large fluctuation of cooling demand, such as high-temperature weather or frequent start-stop working conditions, the energy efficiency decline and temperature rise risk caused by long-time high-load operation of the fan can be effectively relieved, the running stability of the condensing system is significantly improved and the service life of the equipment is prolonged, the power waste is reduced by accurately controlling the power consumption of the fan, the long-term operation cost of the system is reduced, the adaptability and intelligent level of the system to complex working conditions are improved while energy saving and consumption reduction are realized.

[0038] Embodiment two: please refer to Figures 1-5The application provides the technical scheme: the management mechanism 6 includes the liquid bag 601, the liquid bag 601 is located at the front side of the shell 1, the inner wall of the liquid bag 601 is fixedly connected with the outer wall of the shell 1, the outer side of the liquid bag 601 is fixedly connected with the liquid pump 602, one end of the liquid pump 602 is fixedly connected with the first connecting pipe 603, one end of the first connecting pipe 603 is fixedly connected with the outer wall of the liquid bag 601, the inside of the liquid bag 601 is communicated with one end of the liquid pump 602 through the first connecting pipe 603, the other end of the liquid pump 602 is fixedly connected with the second connecting pipe 604, one end, away from the liquid pump 602, of the second connecting pipe 604 penetrates through the shell 1 and extends to the rear side of the brushless fan 3 inside the shell 1, the rear side of the brushless fan 3 is fixedly connected with the heat absorption cavity 605, one side of the heat absorption cavity 605 is fixedly connected with the third connecting pipe 606, one end, away from the heat absorption cavity 605, of the third connecting pipe 606 penetrates through the shell 1 and extends to the outer side of the shell 1 and is fixedly connected with the outer wall of the liquid bag 601, and the inside of the heat absorption cavity 605 is communicated with the inside of the liquid bag 601 through the third connecting pipe 606, the liquid bag 601 is a ring-shaped hollow structure, and the liquid bag 601 is made of elastic rubber material, the heat absorption cavity 605 is a ring-shaped hollow structure, and the heat absorption cavity 605 is made of metal material, the rear side of the heat absorption cavity 605 is provided with the heat dissipation mechanism 607, the liquid pump 602 is electrically connected with the control module, and the two ends of the liquid pump 602 can be switched between the output end and the input end.

[0039] The heat dissipation mechanism 607 includes the elastic film 701, the inner wall of the elastic film 701 is fixedly connected with the hydraulic cavity 702 at the front side, the hydraulic cavity 702 is inserted with the supporting rod 703 at the inner wall, the rear end of the supporting rod 703 is fixedly connected with the inner wall of the elastic film 701 at the rear side, the inner wall of the hydraulic cavity 702 is fixedly connected with the fourth connecting pipe 704, the fourth connecting pipe 704 is provided with the pressure valve inside, one end, away from the liquid pump 602, of the fourth connecting pipe 704 penetrates through the hydraulic cavity 702, the elastic film 701 and the heat absorption cavity 605 and is communicated with the inside of the heat absorption cavity 605, and the inside of the hydraulic cavity 702 is communicated with one end, away from the liquid pump 602, of the second connecting pipe 604.

[0040] In the application process of the device, the control module detects the rotation speed and energy consumption of the brushless fan 3 in real time, and records the rotation speed and energy consumption of the brushless fan 3. When the brushless fan 3 works for a long time, especially in the high-speed cooling working condition of the brushless fan 3 required by the high temperature of the heat dissipation fin, the temperature of the brushless fan 3 will rise, and then the power consumption and rotation speed ratio of the brushless fan 3 will deviate from the preset value. When the value exceeds the threshold value, the liquid pump 602 is started, so that the liquid pump 602 draws the cooling liquid in the liquid capsule 601 through the first connecting pipe 603, and then discharges into the inside of the hydraulic cavity 702 through the second connecting pipe 604, and then discharges into the inside of the heat absorption cavity 605 through the fourth connecting pipe 704, and finally flows back to the inside of the liquid capsule 601 through the third connecting pipe 606 on the heat absorption cavity 605. In this process, since the heat absorption cavity 605 is a metal annular hollow structure, the cooling liquid passing through the inside of the heat absorption cavity 605 will take away the heat of the heat absorption cavity 605, and the heat absorption cavity 605 will continuously absorb the heat of the brushless fan 3, so as to control the working temperature of the brushless fan 3. Until the rotation speed and power consumption ratio of the brushless fan 3 returns to the preset section for a period of time, the work of the liquid pump 602 can be stopped.

[0041] The present application introduces a control mechanism 6 that combines liquid heat transfer and elastic heat dissipation, which enables the brushless condensing fan to have active heat regulation capability and power consumption self-balancing function. The liquid capsule 601 is made of elastic rubber material, which can not only buffer the change of liquid pressure, but also adapt to different capacity requirements to avoid liquid pressure stagnation. The metal heat absorption cavity 605 can efficiently capture and conduct the heat generated during fan operation, improving reliability while achieving energy efficiency optimization and extending service life, and is suitable for air conditioners, refrigeration or industrial heat exchange scenes with high requirements for heat dissipation performance and energy consumption control.

[0042] Example three: please refer to Figures 1-5 The present application provides a technical solution: the rear side of the heat absorption cavity 605 is fixedly connected with a support block 705, the rear end of the support block 705 is embedded in the inside of the front side of the hydraulic cavity 702, the rear side of the heat absorption cavity 605 is also fixedly connected with a spring 706, the rear end of the spring 706 is fixedly connected with the front side of the hydraulic cavity 702, the support rod 703 can slide in the front and rear directions relative to the hydraulic cavity 702, and the outer wall of the elastic film 701 is in a water drop shape after the support rod 703 moves backward, that is, the diameter of the rear side is smaller than that of the front side.

[0043] In the operation of the brushless fan 3, the control module records and compares the speed of the brushless fan 3 and the temperature drop rate of the heat dissipation fins to generate a value. When the temperature of the heat dissipation fins of the condenser is maintained at a high temperature condition and the speed of the brushless fan 3 is stable for a period of time, the temperature drop rate of the heat dissipation fins of the condenser is less than a preset value. At this time, the control module starts the liquid pump 602, and the liquid pump 602 pumps liquid into the hydraulic chamber 702 quickly, and the speed of the brushless fan 3 is increased, so that the hydraulic pressure in the hydraulic chamber 702 is increased to push the support rod 703 to move backward, thereby pulling the elastic film 701 to form water droplets. After the airflow passes through the outer wall of the elastic film 701, the airflow will be gathered at the tail end of the support rod 703 to form a high-pressure and high-speed airflow due to the shape of the elastic film 701. The airflow will increase the impact on the surface of the heat dissipation fins of the condenser, thereby removing the adhesion on the surface of the heat dissipation fins, and increasing the heat dissipation capacity of the heat dissipation fins of the condenser in a short time. At the same time, the cooling liquid quickly flows through the heat absorption chamber 605 to cool the brushless fan 3 with high speed under this condition. When the temperature of the heat dissipation fins decreases, the liquid pump 602 can be started to input the liquid in the hydraulic chamber 702 into the liquid tank 601 through the second connecting pipe 604. At this time, the pressure valve in the fourth connecting pipe 704 prevents the liquid in the heat absorption chamber 605 from flowing back into the hydraulic chamber 702, so that the liquid in the hydraulic chamber 702 is pumped back into the liquid tank 601 through the second connecting pipe 604. The support rod 703 is retracted into the hydraulic chamber 702, the volume of the elastic film 701 is reduced, and the influence on the normal working condition of the device is reduced.

[0044] The application introduces a structure of a support block 705 and a spring 706 in cooperation with the connection mode of the heat absorption chamber 605 and the hydraulic chamber 702, which improves the guiding stability of the support rod 703 and automatically restores the hydraulic pressure after weakening, so as to ensure that the device returns to the initial state without interfering with the normal working condition, and the water droplet structure formed by the elastic film 701 can guide the airflow to generate a high-speed focused impact flow to improve the cleaning and heat exchange efficiency of the heat dissipation fins. When the heat dissipation is insufficient, the local cooling capacity can be greatly improved in a short time, and the risk of overheating of the fan is suppressed. After the temperature of the heat dissipation fins decreases, the structure can be adjusted in time to reduce the volume of the elastic film and reduce the interference with the normal working condition. The application realizes dynamic adjustment of the heat dissipation mode and intensity according to the heat dissipation demand, improves the heat dissipation efficiency and reliability of the condenser fan, and prolongs the service life of the equipment.

[0045] Embodiment four: please refer to Figures 1-6The present application provides a technical solution: when the power consumption and rotating speed of the brushless fan 3 exceed the threshold value and the cooling is performed by the control mechanism 6, if the brushless fan 3 is still in an abnormal state after the control mechanism 6 is started for a period of time, the liquid pump 602 can be started in a pulse pumping mode to pump liquid into the hydraulic chamber 702, so that the water flow rapidly impacts the hydraulic chamber 702 intermittently in a short time, and the hydraulic chamber 702 is caused to shake slightly under the support of the spring 706 and the limiting of the support block 705, so that the airflow is dispersed to the surrounding after being converged by the elastic film 701, the hot air generated by the heat dissipation fins around the device is quickly driven away, and the vibration of the brushless fan 3 is caused, so that the attachments possibly carried on the surface of the blade of the brushless fan 3 are removed in the rotating state of the brushless fan 3, and the cooling of the brushless fan 3 and the stability of the power consumption and rotating speed of the brushless fan 3 are facilitated, and if the brushless fan 3 is continuously high temperature in this state, a maintenance notice is sent to the receiving terminal by the control module, so that the device is ensured to be in the best working state.

[0046] The device is a brushless condensing fan, the surface temperature of the condenser heat dissipation fin is monitored in real time by the fan infrared temperature monitoring module 5, and the rotating speed of the brushless fan 3 is automatically adjusted by the control module according to the temperature change, the rotating speed is increased to enhance the heat dissipation in high temperature, and the rotating speed is reduced to reduce the energy consumption in low temperature, when the ratio of the power consumption and the rotating speed is abnormal due to long time high load operation, the control mechanism 6 is started, the liquid is delivered from the liquid tank 601 to the heat absorption cavity 605 by the liquid pump 602 through the second connecting pipe 604, and the heat is quickly taken away, so that the dynamic regulation and control of the fan temperature is realized, the power stability is ensured, and the heat dissipation fin is in high temperature for a long time, the device further deforms the elastic film 701 by the hydraulic drive, guides the high-speed airflow to impact the surface of the condenser fin, enhances the local heat dissipation and removes the attachments, and then the heat dissipation efficiency of the heat dissipation fin is improved, the increase of the power consumption and the reduction of the damage risk caused by the long time high rotating speed operation of the brushless fan 3 are avoided, and when the power consumption of the brushless fan 3 is abnormal for a long time, the elastic film 701 is caused to swing in a pulse pumping mode, the heat accumulation is dispersed, and the blade of the brushless fan 3 is vibrated to remove the blade attachments, so that the synergistic effect of the energy consumption control, the heat dissipation efficiency improvement and the intelligent response of the abnormal state of the brushless fan 3 is realized.

[0047] The present application also discloses a brushless condensing fan control method, including the following steps:

[0048] Step one: the temperature of the surface of the condenser heat dissipation fin is monitored in real time by the infrared temperature monitoring module 5, and the detection result is transmitted to the control module;

[0049] Step two: the rotating speed of the brushless fan 3 motor is automatically adjusted by the control module according to the temperature change of the heat dissipation fin, the rotating speed of the fan is increased when the fin temperature is increased, and the rotating speed of the fan is reduced when the temperature is reduced, so that the energy consumption control is realized;

[0050] Step three: the control module calculates the power consumption and speed ratio of the brushless fan 3 in real time, and when the ratio deviates from the preset threshold, it is judged that the motor temperature rises abnormally, and the cooling control step is entered;

[0051] Step four: start the liquid pump 602 to extract the liquid from the liquid tank 601 cavity, and deliver it to the heat absorption cavity 605 through the second connecting pipe 604, so that the cooling liquid absorbs and removes the heat generated by the brushless fan 3, reduces the operating temperature of the brushless fan 3;

[0052] Step five: when the fin temperature drops slowly, further deform the elastic film 701 into water droplets by controlling the hydraulic support rod 703 to guide the airflow to impact the surface of the heat dissipation fin at high speed to enhance the heat exchange efficiency, and cause local disturbance through pulse control to remove the attachments and diffuse the heat accumulation area, thereby improving the overall heat dissipation effect.

[0053] The brushless condenser fan control method described in the present application combines real-time temperature sensing, fan dynamic speed regulation, liquid cooling rapid cooling, airflow enhanced heat exchange and pulse disturbance cleaning multiple control strategies, which can intelligently respond to high temperature or high energy consumption state according to the operating condition of the condenser, reduce energy waste and prolong the service life of the fan by adjusting the speed, and at the same time, the liquid pump is used to realize precise cooling control, when the liquid cooling efficiency is limited, the elastic film is deformed to strengthen the local airflow guidance to further improve the heat exchange capacity, and the disturbance flow field formed by the swing of the hydraulic chamber driven by the pulse pump liquid not only accelerates the heat diffusion, but also realizes the self-cleaning effect through the fan vibration, which improves the overall system operation efficiency, energy saving effect and intelligent control level, so as to ensure that the fan system can operate stably and reliably under various working conditions.

[0054] It should be noted that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A brushless condensing fan comprising a housing (1) and a control module, characterized in that: The inner wall of the shell (1) is fixedly connected with a support (2), the inner wall of the support (2) is fixedly connected with a brushless fan (3), and the brushless fan (3) can output air flow to the rear side of the shell (1); The outer wall of the shell (1) is fixedly connected with a fixed plate (4), the inner wall of the fixed plate (4) is fixedly connected with an infrared temperature monitoring module (5), the infrared temperature monitoring module (5) is used for monitoring the temperature of condenser cooling fins, and the infrared temperature monitoring module (5) is electrically connected with the control module; The outer side of the shell (1) is also provided with a control mechanism (6); The input direction of the infrared temperature monitoring module (5) is consistent with the output direction of the brushless fan (3); The outer side of the liquid tank (601) is fixedly connected with a liquid pump (602), one end of the liquid pump (602) is fixedly connected with a first connecting pipe (603), one end of the first connecting pipe (603) is fixedly connected with the outer wall of the liquid tank (601), the inside of the liquid tank (601) and one end of the liquid pump (602) are communicatively arranged through the first connecting pipe (603), the other end of the liquid pump (602) is fixedly connected with a second connecting pipe (604), one end of the second connecting pipe (604) away from the liquid pump (602) penetrates through the shell (1) and extends to the rear side of the brushless fan (3) inside the shell (1), the rear side of the brushless fan (3) is fixedly connected with a heat absorption cavity (605), one side of the heat absorption cavity (605) is fixedly connected with a third connecting pipe (606), one end of the third connecting pipe (606) away from the heat absorption cavity (605) penetrates through the shell (1) and extends to the outer side of the shell (1) and is fixedly connected with the outer wall of the liquid tank (601), and the inside of the heat absorption cavity (605) is communicatively arranged with the inside of the liquid tank (601) through the third connecting pipe (606); The rear side of the heat absorption cavity (605) is provided with a heat dissipation mechanism (607), the heat dissipation mechanism (607) comprises an elastic film (701), the inner wall of the elastic film (701) is fixedly connected with a hydraulic cavity (702) at the front side, the hydraulic cavity (702) is inserted with a support rod (703), the rear end of the support rod (703) is fixedly connected with the inner wall of the elastic film (701) at the rear side, the inner wall of the hydraulic cavity (702) is fixedly connected with a fourth connecting pipe (704), the fourth connecting pipe (704) is provided with a pressure valve in the inside, the other end of the fourth connecting pipe (704) extends out of the hydraulic cavity (702), the elastic film (701) and is communicatively arranged with the inside of the heat absorption cavity (605), and the inside of the hydraulic cavity (702) is communicatively arranged with one end of the second connecting pipe (604) away from the liquid pump (602).

2. A brushless condenser fan as claimed in claim 1, characterized in that: The liquid bag (601) is a ring-shaped hollow structure, and the liquid bag (601) is made of a rubber material with elasticity; the heat absorption cavity (605) is a ring-shaped hollow structure, and the heat absorption cavity (605) is made of a metal material.

3. A brushless condenser fan as claimed in claim 2, wherein: The liquid pump (602) is electrically connected with the control module, and the two ends of the liquid pump (602) can be switched between the output end and the input end.

4. A brushless condenser fan as claimed in claim 3, wherein: The rear side of the heat absorption cavity (605) is fixedly connected with a support block (705), the rear end of the support block (705) is embedded in the front side of the hydraulic cavity (702), and the rear side of the heat absorption cavity (605) is also fixedly connected with a spring (706), and the rear end of the spring (706) is fixedly connected with the front side of the hydraulic cavity (702).

5. A brushless condenser fan as claimed in claim 4, wherein: The support rod (703) can slide in the front-rear direction relative to the hydraulic cavity (702), and the outer wall of the elastic diaphragm (701) is in a water drop-shaped structure with a smaller rear side diameter and a larger front side diameter after the support rod (703) moves backward.

6. A method of controlling a brushless condenser fan, characterized by: The brushless condensing fan according to any one of claims 1-5 comprises the following steps: Step 1: real-time monitoring of the temperature of the surface of the condenser heat dissipation fins by the infrared temperature monitoring module (5), and transmitting the detection results to the control module; Step 2: the control module automatically adjusts the speed of the motor of the brushless fan (3) according to the temperature change of the heat dissipation fins, and increases the speed of the fan when the temperature of the fins increases, and decreases the speed of the fan when the temperature decreases; Step 3: the control module calculates the power consumption and speed ratio of the brushless fan (3) in real time during operation, and when the ratio deviates from the preset threshold, it is judged that the motor temperature rise is abnormal, and the cooling control step is entered; Step 4: starting the liquid pump (602) to extract liquid from the liquid bag (601) cavity, and delivering the liquid to the heat absorption cavity (605) through the second connecting pipe (604), so that the cooling liquid absorbs and carries away the heat generated by the brushless fan (3), and reduces the operating temperature of the brushless fan (3); Step 5: when the temperature of the fins decreases slowly, the elastic diaphragm (701) is deformed into a water drop-shaped structure by controlling the hydraulic pressure to push the support rod (703), the airflow is guided to impact the surface of the heat dissipation fins at high speed to enhance the heat exchange efficiency, and the hydraulic cavity (702) is oscillated by a pulse control mode to form airflow disturbance to remove the attached objects and diffuse the heat accumulation area.

Images