Comprehensive protection and cooling system for air conditioner outdoor unit

Abstract

The comprehensive protection and cooling system comprises a bottom plate used for installing the air conditioner outdoor unit, and the bottom plate is covered with a louvered protective cover; an atomization spraying device is arranged on the top surface in the louvered protective cover; a water collecting groove is formed in the bottom plate, and high-temperature-resistant and high-water-absorption green plants are planted in the water collecting groove; a condensate water collecting device is arranged on the top face of the exterior of the louvered protective cover and communicates with an air conditioner outdoor unit condensate water drainage pipe and the atomization spraying device. A first temperature sensor is arranged in the louvered protective cover; a second temperature sensor is arranged in a condenser of the air conditioner outdoor unit; and the device further comprises a PLC (Programmable Logic Controller). According to the air conditioner, condensate water of the air conditioner is used for spraying and cooling the outer unit, the energy utilization efficiency is improved, the angle-adjustable louvered protective cover is adopted, the ventilation effect is ensured while the outer unit is protected, the operation state of the air conditioner is monitored through multiple sensors, and automatic adjustment of the spraying amount and the louver angle is achieved through the PLC.

Description

Technical Field

[0001] The invention belongs to the technical field of heating, ventilation and air conditioning, and in particular relates to a comprehensive protection and cooling system for an air-conditioning outdoor unit. Background Art

[0002] The rapid development of urbanization and the rapid growth of urban population have led to an increase in artificial thermal activities, which has further aggravated the urban heat island effect and urban overheating. Urban environmental overheating affects people's daily lives, including reduced environmental comfort and increased cooling demand. In such an environment, air conditioning has gradually become an indispensable cooling method for urban residents. However, there are also a series of problems with the current air conditioning system. First, when the air conditioner is running, the outdoor unit discharges heat from the indoor to the atmosphere, causing additional warming in the city and further increasing building energy consumption. Secondly, since most room air conditioners basically use large temperature difference and machine dew point air supply, when the supply air temperature is lower than the dew point temperature corresponding to the mixing point of fresh air and return air, condensation water will be generated. This part of condensation water falls into the evaporator water tray under the action of gravity and is discharged to the outside through the drain pipe. However, at present, most of the condensation water is directly discharged to the outside, which not only causes environmental pollution, such as soaking the building facade, large condensation water generation and discharge, but also causes energy waste. At the same time, the existing air conditioner outdoor unit has problems such as easy entry of debris, rust and aging, and the style and color of the air conditioner shell affect the appearance.

[0003] In the field of protection and cooling of air conditioner outdoor units, existing technologies mainly rely on protective covers made of metal materials such as high-strength aluminum alloys. Although these materials have certain strength, they often have problems such as poor heat dissipation, easy corrosion, and short life. Metal materials are prone to rust in high temperature and humid environments, and even affect the performance and life of air conditioner outdoor units. In addition, the recycling and reuse rate of metal materials is low, making it difficult to meet the increasingly stringent environmental protection requirements. This material property makes air conditioner outdoor units prone to failures when exposed outdoors for a long time.

[0004] Although the traditional fixed protective cover provides a certain degree of protection, it cannot be adjusted flexibly, which limits the heat dissipation effect of the air conditioner outdoor unit. The air flow is blocked, resulting in reduced heat dissipation efficiency, which limits the energy efficiency ratio (COP) of the air conditioner. Especially in hot weather, it is easy to cause the equipment to overheat, affecting its service life.

[0005] In addition, condensed water is usually discharged directly and is not fully utilized, which wastes resources and lacks effective cooling methods. The condensed water collection and reuse technology of traditional air-conditioning systems is still immature and cannot provide a stable water source for cooling. This problem is particularly prominent when resources are tight or high-efficiency air-conditioning systems are designed. When trying to use condensed water for cooling, problems such as improper water treatment are often encountered, such as impurities clogging pipes and scaling corrosion, which pose challenges to system design.

[0006] Most existing control systems rely on manual operation and cannot monitor and adjust the operating status of the air conditioner outdoor unit in real time, making it difficult to optimize overall energy efficiency. Although complex automated control systems can partially solve this problem, they have great technical difficulties in sensor selection, system integration, and signal processing, especially in maintaining stability under extreme weather and environmental conditions. Summary of the invention

[0007] In view of the problems existing in the above-mentioned prior art, the present invention provides a comprehensive protection and cooling system for an air-conditioning outdoor unit, which can not only effectively protect the air-conditioning outdoor unit, but also effectively cool and dissipate the heat of the air-conditioning outdoor unit by reusing the air-conditioning condensed water.

[0008] In order to solve the above technical problems and achieve the above technical effects, the present invention is implemented through the following technical solutions: A comprehensive protection and cooling system for an air conditioner outdoor unit comprises a base plate for mounting the air conditioner outdoor unit, wherein the base plate is covered with a louver-type protective cover with adjustable louver angles for protecting, dissipating heat and ventilating the air conditioner outdoor unit.

[0009] A group of atomizing spray devices are arranged around the outdoor unit of the air conditioner on the top surface inside the louvered protective cover, which are responsible for cooling the outdoor unit of the air conditioner through atomizing spray; a water collecting trough is arranged on the upper surface of the bottom plate, which is used to collect cooling water sprayed by the atomizing spray device and condensed water directly discharged from the outdoor unit of the air conditioner, and green plants with high temperature resistance and strong water absorption are planted in the water collecting trough; a condensate collecting device is arranged on the top surface outside the louvered protective cover, and the condensate drain pipe of the outdoor unit of the air conditioner is respectively connected to the water collecting trough and the water inlet end of the condensate collecting device, and the water outlet end of the condensate collecting device is connected to the water inlet end of the atomizing spray device; the louvered protective cover is provided with a first temperature sensor for monitoring the real-time temperature of the air inlet of the outdoor unit of the air conditioner; a second temperature sensor is arranged in the condenser of the outdoor unit of the air conditioner for monitoring the real-time temperature of the condenser.

[0010] The louvered protective cover, the atomizing spray device, the condensate collection device, the first temperature sensor and the second temperature sensor are all electrically connected to a PLC controller, and the PLC controller is responsible for coordinating and controlling the louvered protective cover, the atomizing spray device and the condensate collection device according to the temperature detection signals of the first temperature sensor and the second temperature sensor.

[0011] Furthermore, the louvered protective cover is made of wood-plastic composite material.

[0012] Furthermore, the louvered protective cover is composed of five frames, namely front, rear, left, right and top, and a number of parallel louvers are arranged in each frame, and both ends of each louver are rotatably connected to the frame in which they are located through independent rotating shafts, and all the rotating shafts located on the same frame are rotated synchronously through synchronizers, and the synchronizers are connected to a louver drive motor through transmission parts, and the louver drive motors of the five frames are electrically connected to the PLC controller.

[0013] Furthermore, the condensate collection device includes a water collecting tank, a high liquid level sensor, a low liquid level sensor, a water pump, a first connecting pipe, a second connecting pipe and a filter; the water collecting tank is installed on the top surface of the outside of the louvered protective cover, and the high liquid level sensor and the low liquid level sensor are respectively arranged at corresponding positions on the inner wall of the water collecting tank; the water inlet of the water collecting tank is connected to the water outlet of the filter through the first connecting pipe, and the water inlet of the filter is connected to the outer end of the condensate drain pipe of the air conditioner outdoor unit; the water pump is arranged at the water outlet of the water collecting tank, and the water pump is equipped with a solenoid valve; the water pump is connected to the water inlet end of the atomizing spray device through the second connecting pipe; the high liquid level sensor, the low liquid level sensor and the water pump are all electrically connected to the PLC controller.

[0014] Furthermore, the atomizing spray device includes an atomizing spray pipe, an atomizing spray head and a water treatment device. The atomizing spray pipe is in a U-shaped structure and is suspended on the top surface inside the louvered protective cover in the form of surrounding the air-conditioning outdoor unit. The atomizing spray head is evenly arranged on the lower surface of the atomizing spray pipe and is connected to the interior of the atomizing spray pipe; the water inlet on the upper surface of the atomizing spray pipe is connected to the water outlet of the condensate collection device through the water treatment device, and the interior of the water treatment device is provided with a filter, activated carbon and a water softener in sequence according to the water flow direction.

[0015] Furthermore, the shape of the water collecting trough corresponds to the shape of the atomizing spray device, both are U-shaped structures, and are arranged around the air conditioner outdoor unit; the water collecting trough is spliced ​​by a front side trough, a left side trough, and a rear side trough, the front side trough is parallel to the rear side trough, the left side trough is slightly higher than the front side trough and the rear side trough, and there are inclined slopes at the connections between the left side trough and the front side trough and the rear side trough.

[0016] Furthermore, the green plants are one or both of mosses and ferns.

[0017] Furthermore, the first temperature sensor is a probe-type temperature sensor, which is arranged on the side and back of the inside of the louvered protective cover in a single point or array manner, and the probe of the probe-type temperature sensor faces the side air inlet and the back air inlet of the air conditioner outdoor unit.

[0018] Furthermore, the second temperature sensor is a contact temperature sensor, and the contact temperature sensor is arranged in a condenser of an outdoor unit of the air conditioner.

[0019] A control method for the above-mentioned integrated protection and cooling system for an air conditioner outdoor unit comprises the following steps: Step 1) When the air conditioner outdoor unit is started, condensed water flows into the water collection tank through the condensed water drain pipe of the air conditioner outdoor unit, the filter and the first connecting pipe in sequence; at the same time, the system is powered on, the PLC controller is automatically initialized, and the high liquid level sensor, the low liquid level sensor, the first temperature sensor and the second temperature sensor are activated, and the water pump (atomizing spray device) is activated and the five louver drive motors are controlled to rotate, so that the louvers on the five surfaces of the louver protective cover are opened and adjusted to an inclination angle of 90° with the frame of the louver protective cover; Step 2) The high liquid level sensor and the low liquid level sensor monitor the water level of the water collecting tank in real time and collect liquid level signals; the second temperature sensor monitors the condenser temperature of the air conditioner outdoor unit in real time and collects condenser temperature signals; the first temperature sensor monitors the side and back air inlet temperatures of the air conditioner outdoor unit in real time and collects air inlet temperature signals; Step 3) The PLC controller first analyzes the liquid level signal. If the liquid level signal is a low liquid level signal, the PLC controller controls the water pump to turn off to avoid dry operation of the atomizing spray head; if the liquid level signal is a high liquid level signal, the PLC controller controls the water pump to turn on and adjust it to the maximum, so as to achieve the maximum amount of spraying of the atomizing spray head to avoid overflow of the water collecting tank; if the liquid level signal is a normal liquid level signal, the PLC controller further analyzes the condenser temperature signal and the air inlet temperature signal; Step 4) When the liquid level signal is a normal liquid level signal, if one of the condenser temperature signal and the air inlet temperature signal exceeds the set working temperature threshold, the PLC controller controls the water pump to start, and adjusts the size according to the range of the air inlet working temperature threshold, thereby realizing adaptive spraying of the atomizing spray head and cooling the air conditioner outdoor unit; at the same time, the PLC controller controls the rotation amplitude of the five louver drive motors according to the air inlet working temperature, thereby adjusting the opening angle of the louvers on the five surfaces of the louvered protective cover to ensure the effect of heat dissipation and ventilation; Step 5) a part of the water mist sprayed by the atomizing spray head is blown out of the louvered protective cover along with the air outlet of the air conditioner outdoor unit, and the other part falls into the water collection tank below the atomizing spray head for the green plants planted in the water collection tank to absorb excess condensed water, thereby avoiding the problem of moisture in the louvered protective cover; Step 6) After the air conditioner outdoor unit stops working, the system continues to run for a period of time until the condenser temperature signal and the air inlet temperature signal drop below the set threshold value, and the PLC controller controls the reverse rotation of the five shutter drive motors to close all the shutters on the five surfaces of the shutter protective cover; Step 7) The system is shut down and the filters and water treatment units are periodically removed for cleaning or replacement.

[0020] The beneficial effects of the present invention are: 1. Application of environmentally friendly materials: The present invention adopts wood-plastic composite materials to make the air conditioner outdoor unit protective cover, which has the advantages of water resistance, corrosion resistance, acid and alkali resistance, etc., which not only greatly extends the service life of the protective cover, but also can be 100% recycled and reused, meets the requirements of green environmental protection, and avoids the pollution problems caused by traditional aluminum alloy materials.

[0021] 2. Enhanced heat dissipation effect: The present invention designs a rotatable louver structure, so that the protective cover can adjust the air circulation direction while protecting the air conditioner outdoor unit, optimize the heat dissipation effect, thereby improving the overall performance of the air conditioning system and avoiding poor heat dissipation caused by limited ventilation of the fixed protective cover.

[0022] 3. Recycling of condensed water: The present invention effectively collects condensed water generated by the air conditioner, and uses it for atomization spraying to cool the air inlet and outlet of the outdoor unit after filtering. This not only saves water resources, but also reduces the heat load of the outdoor unit of the air conditioner through the cooling effect, thereby improving energy utilization efficiency.

[0023] 4. Intelligent control system: The present invention adopts a PLC controller combined with multiple sensors such as water level and temperature to realize intelligent adjustment of condensate collection, spray intensity and louver angle, real-time monitoring and regulation of the operating status of the outdoor unit, thereby improving the automation and reliability of the system and reducing dependence on manual intervention.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A three-dimensional diagram of the comprehensive protection and cooling system for an air conditioner outdoor unit of the present invention; Figure 2 A top view of the comprehensive protection and cooling system for an air conditioner outdoor unit of the present invention; Figure 3 A three-dimensional diagram of the comprehensive protection and cooling system for the outdoor unit of an air conditioner after the shutters are removed; Figure 4 A top view of the comprehensive protection and cooling system for an air conditioner outdoor unit of the present invention after the shutters are removed; Figure 5 The electrical connection block diagram of the comprehensive protection and cooling system for the air conditioner outdoor unit of the present invention; Figure 6 The present invention is a water connection block diagram of the comprehensive protection and cooling system for the outdoor unit of the air conditioner.

[0026] The numbers in the figure indicate: 1. Air conditioner outdoor unit; 2. Bottom plate; 3. Louvered protective cover; 4. Water collecting tank; 5. Green plants; 6. Condensate drain pipe of air conditioner outdoor unit; 7. First temperature sensor; 8. Second temperature sensor; 9. Louvered drive motor; 10. Water collecting tank; 11. High liquid level sensor; 12. Low liquid level sensor; 13. Water pump; 14. First connecting pipe; 15. Second connecting pipe; 16. Filter; 17. Atomizing spray pipe; 18. Atomizing spray head; 19. Water treatment device; 1901. Filter; 1902. Activated carbon; 1903. Water softener; 20. PLC controller. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The descriptions herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] See also Figure 1-6 As shown, a comprehensive protection and cooling system for an air-conditioning outdoor unit includes a base plate 2 for mounting the air-conditioning outdoor unit 1, and a louvered protective cover 3 with adjustable louver angles is provided on the base plate 2 to protect, dissipate heat and circulate air for the air-conditioning outdoor unit 1.

[0029] The shutter-type protective cover 3 adopts a shutter-type design, and is composed of five frames, namely, front, rear, left, right, and top. A number of parallel shutters are arranged in each frame, and both ends of each shutter are rotatably connected to the respective frames through independent rotating shafts. All the rotating shafts located in the same frame are rotated synchronously through synchronizers, and the synchronizers are connected to a shutter drive motor 9 through transmission parts. The shutter drive motor 9 drives the shutters to rotate through the transmission parts and synchronizers, so as to realize rapid heat dissipation inside the shutter-type protective cover 3 and air circulation at the air inlet of the air conditioner outdoor unit 1.

[0030] At the same time, all frames and shutters of the louvered protective cover 3 are made of wood-plastic composite materials. At present, most of the protective covers of the air conditioner outdoor unit are made of high-strength aluminum alloy materials. However, such materials will cause poor heat dissipation of the air conditioner outdoor unit and shorten the service life. Due to the characteristics of aluminum alloy, the outdoor unit will be burned in more serious cases. The wood-plastic composite material used in the present invention has good strength performance, and compared with other woods, it has excellent water resistance and corrosion resistance, can resist strong acids and alkalis, does not rust, and does not breed bacteria, is not easy to be eaten by insects, and does not grow fungi. The service life is long, which can reach more than 50 years. The biggest advantage of this material is that it turns waste into treasure, and can be 100% recycled and reproduced, can be decomposed, will not cause "white pollution", and is a green environmentally friendly product.

[0031] As an alternative, all frames and shutters of the shuttered protective cover 3 can also be made of bamboo-wood composite materials or weather-resistant plastics. These materials have similar water resistance, corrosion resistance and recyclability, but the cost and weather resistance are slightly different. Bamboo-wood materials have natural moisture absorption properties, which can further slow down the accumulation of moisture around the shuttered protective cover 3, which is helpful to extend the life of the equipment.

[0032] The top surface of the louvered protective cover 3 is provided with a condensate collection device. The condensate collection device includes a water collecting tank 10, a high liquid level sensor 11, a low liquid level sensor 12, a water pump 13, a first connecting pipe 14, a second connecting pipe 15 and a filter 16. The water collecting tank 10 is a closed structure, installed on the top surface of the louvered protective cover 3, and is used to collect condensate discharged from the condenser of the air conditioner outdoor unit 1. The water inlet of the water collecting tank 10 is connected to the water outlet of the filter 16 through the first connecting pipe 14, and the water inlet of the filter 16 is connected to the outer end of the condensate drain pipe 6 of the air conditioner outdoor unit. The condensate drain pipe 6 of the air conditioner outdoor unit guides the condensate discharged from the air conditioner outdoor unit 1 into the water collecting tank 10 through the filter 16 and the first connecting pipe 14. The filter 16 can effectively filter impurities with a particle size of more than 5 μm, and is responsible for filtering the condensate before it enters the water collecting tank 10 to remove suspended matter such as mud, rust, etc. in the condensate to prevent the nozzle of the atomizing spray device from being blocked. The water pump 13 is arranged at the water outlet of the water collecting tank 10, and the water pump 13 delivers the condensed water in the water collecting tank 10 to the atomizing spray device through the second connecting pipe 15. The high liquid level sensor 11 and the low liquid level sensor 12 are respectively arranged at corresponding positions on the inner wall of the water collecting tank 10, and are used to monitor the water level in the water collecting tank 10 in real time, which can ensure that the operation of the water pump 13 is turned on when the water level is too high to avoid overflow of the water collecting tank 10, and can ensure that the operation of the water pump 13 is stopped when the water level is too low to avoid dry operation of the system caused by the emptying of the water collecting tank 10. The water pump 13 can select a suitable power as needed, and the water pump 13 is equipped with a solenoid valve. According to the different conditions of the air inlet temperature or the condenser temperature of the air conditioner outdoor unit 1, the spraying intensity of the atomizing spray device can be divided into three gears: low, medium and high by adjusting the size of the solenoid valve of the water pump 13. For example, when the temperature is high, the nozzle sprays with a large amount of water and a high frequency, and when the temperature is medium, it sprays with a medium frequency to ensure maximum utilization of the system's energy efficiency.

[0033] A group of atomizing spray devices are arranged on the top surface of the interior of the louvered protective cover 3 around the air conditioner outdoor unit 1, which is responsible for cooling the air conditioner outdoor unit 1. The atomizing spray device includes an atomizing spray pipe 17, an atomizing spray head 18 and a water treatment device 19. The atomizing spray pipe 17 is a U-shaped structure, which is hoisted on the top surface of the interior of the louvered protective cover 3 in the form of surrounding the air conditioner outdoor unit 1. The atomizing spray head 18 is evenly arranged on the lower surface of the atomizing spray pipe 17 and is connected to the interior of the atomizing spray pipe 17. A water inlet is provided on the upper surface of the atomizing spray pipe 17, and the water inlet is connected to the water pump 13 through the water treatment device 19 and the second connecting pipe 15. The atomizing spray head 18 selects a fine spray type nozzle to ensure uniform spraying, and its spraying amount is adjusted by the water pump 13 and its solenoid valve. The atomizing spray head 18 sprays the condensed water uniformly in atomized form, thereby reducing the air temperature in the louvered protective cover 3 and absorbing heat. This cooling method is particularly effective in hot weather, and reduces the heat load of the air conditioner outdoor unit 1 by cooling. The water treatment device 19 is provided with a filter, activated carbon and a water softener in sequence according to the direction of water flow. Among them, the filter 1901 is responsible for removing suspended matter in the condensed water, the activated carbon is responsible for absorbing calcium and magnesium ions in the condensed water to prevent corrosion of the aluminum sheet of the atomizing spray device, and the water softener 1903 is responsible for removing calcium and magnesium ions in the condensed water to prevent scaling of the aluminum sheet of the atomizing spray device, so that the system operation is more stable.

[0034] A water collecting trough 4 is provided on the upper surface of the bottom plate 2, which is used to collect the cooling water sprayed by the atomizing spray device and the condensed water directly discharged by the air conditioner outdoor unit 1. The condensed water drainage pipe 6 of the air conditioner outdoor unit is connected to the water collecting trough 4, and the green plants 5 with high temperature resistance and strong water absorption are planted in the water collecting trough 4. The position of the water collecting trough 4 corresponds to the position of the atomizing spray pipe 17, and both are U-shaped structures and are arranged around the air conditioner outdoor unit 1. The water collecting trough 4 is spliced ​​by the front side trough, the left side trough, and the rear side trough. The front side trough is parallel to the rear side trough, the left side trough is slightly higher than the front side trough and the rear side trough, and there are inclined slopes at the connection between the left side trough and the front side trough and the rear side trough. Preferably, the inclination angle of the inclined slope is 1°, which can ensure that the green plants 5 are not lost with the soil while allowing excess water to flow out, preventing the green plants 5 from being in an overly moist environment and maintaining appropriate humidity and temperature.

[0035] The green plants 5 can be one or both of mosses or ferns. Such plants can still maintain photosynthetic capacity under high temperature conditions of 40-45°C, can withstand extreme temperatures, and grow in a cold environment. Moreover, such plants have strong water absorption, which can appropriately reduce the air humidity of the environment and have a cooling effect. Such plants can cool the environment inside the louvered protective cover 3 through transpiration at high temperatures, while keeping the air humidity within an appropriate range, thereby reducing moisture accumulation in the air conditioner outdoor unit 1 and extending the service life of the equipment. The green plants 5 can not only absorb excess condensed water, but also reduce the problem of moisture inside the louvered protective cover 3 caused by excessive condensed water.

[0036] The condensed water in the water collecting box 10 can first enter the water collecting tank 4 or directly enter the atomizing spray device according to needs to maintain the air inlet temperature of the air conditioner outdoor unit 1.

[0037] A first temperature sensor 7 is disposed inside the louvered protective cover 3 to monitor the real-time temperature of the air inlet of the air conditioner outdoor unit 1. The first temperature sensor 7 is a probe-type temperature sensor, which is disposed on the side and back of the louvered protective cover 3 in a single point or array manner, and the probe of the probe-type temperature sensor faces the side air inlet and the back air inlet of the air conditioner outdoor unit 1.

[0038] The condenser of the air conditioner outdoor unit 1 is provided with a second temperature sensor 8 for monitoring the real-time temperature of the condenser. The second temperature sensor 8 is a contact temperature sensor, which is provided in the condenser of the air conditioner outdoor unit 1 .

[0039] The entire system of the present invention is controlled by an automatic control system, which uses a PLC controller 20. The PLC controller 20 is electrically connected to the first temperature sensor 7, the second temperature sensor 8, the high liquid level sensor 11, the low liquid level sensor 12, the water pump 13, and the shutter drive motor 9 on the frame of the five surfaces of the shutter type protective cover 3. The PLC controller 20 calculates and outputs a control signal based on real-time sensor data, and automatically starts the atomizing spray device or adjusts the shutter angle when the water level reaches a preset value or the temperature exceeds a threshold value to achieve precise control.

[0040] When the air-conditioning outdoor unit 1 starts to work, the PLC controller 20 first controls the five louver drive motors 9 to work, thereby controlling the louvers on the five surfaces of the louvered protective cover 3 to all open and adjust to an inclination angle of 90° with the frame of the louvered protective cover to facilitate heat dissipation and air flow in the louvered protective cover 3, and the first temperature sensor 7, the second temperature sensor 8, the high liquid level sensor 11, and the low liquid level sensor 12 start their respective monitoring work.

[0041] The high liquid level sensor 11 and the low liquid level sensor 12 monitor the water level in the water collecting tank 10 in real time. When the high liquid level sensor 11 detects that the water level in the water collecting tank 10 is too high, the water level is too high signal is transmitted to the PLC controller 20, and the PLC controller 20 controls the water pump 13 and its solenoid valve to open, and turns on the atomizing spray device to the maximum frequency and maximum opening to discharge the excess water in the water collecting tank 10. When the low liquid level sensor 12 detects that the water level in the water collecting tank 10 is too low, the water level is too low signal is transmitted to the PLC controller 20, and the PLC controller 20 controls the water pump 13 and its solenoid valve to close to stop the atomizing spray device from working.

[0042] The second temperature sensor 8, i.e., the contact temperature sensor, monitors the temperature of the condenser of the air conditioner outdoor unit 1 in real time, and transmits the monitored real-time temperature signal V1 to the PLC controller 20, which compares the real-time temperature signal V1 with the set operating temperature threshold of the condenser. If the real-time temperature signal V1 exceeds the set operating temperature threshold of the condenser, the PLC controller 20 controls the water pump 13 and its solenoid valve to open, and cools the air inlet of the air conditioner outdoor unit 1 by atomizing and spraying cooling water of the atomizing spray device. If the real-time temperature signal V1 is lower than the set operating temperature threshold of the condenser, the PLC controller 20 controls the water pump 13 and its solenoid valve to close, indicating that the air inlet of the air conditioner outdoor unit 1 does not need to be cooled at this time.

[0043] Under the standard working condition of outdoor ambient temperature of 35℃, the standard condensation temperature difference is 15℃, and the optimal operating temperature of the condenser is about 50℃. The operating temperature threshold of the condenser can be set to 50℃. If the condenser operating temperature is greater than 50℃, the atomizing spray device will be turned on.

[0044] The first temperature sensor 7, i.e., the probe-type temperature sensor, monitors the temperature of the air inlet of the air conditioner outdoor unit 1 in real time, and transmits the monitored real-time temperature signal V2 to the PLC controller 20. The PLC controller 20 compares the real-time temperature signal V2 with the temperature outside the laboratory V0 that affects the energy efficiency ratio COP curve, and controls the opening of the water pump 13 and its solenoid valve according to the interval where the real-time temperature signal V2 exceeds the temperature outside the laboratory V0 that affects the energy efficiency ratio COP curve, thereby adjusting the spray intensity of the atomizing spray device. The more the real-time temperature signal V2 exceeds the set threshold temperature, the greater the spray volume.

[0045]

[0046] in, Indicates the indoor wet bulb temperature. Indicates the outdoor dry-bulb temperature () the air inlet temperature.

[0047] The air inlet operating temperature threshold is set to 35°C. When the air inlet temperature is between 35-40°C, the atomizing spray device is in a low water pressure state; when the air inlet temperature is between 40-45°C, the atomizing spray device is in a medium water pressure state; when the air inlet temperature is greater than 45°C, the atomizing spray device is in a high water pressure state.

[0048] In addition, during the cooling and heat dissipation process, the PLC controller 20 can also automatically adjust the louver angles of the five surfaces of the louvered protective cover 3 according to the external temperature (the real-time temperature of the condenser of the air conditioner outdoor unit monitored by the contact temperature sensor) and the air conditioning load (the real-time temperature of the air inlet of the air conditioner outdoor unit monitored by the probe temperature sensor), thereby ensuring that the air circulation and cooling and heat dissipation of the louvered protective cover 3 are in the best effect. By adjusting the louver angle, the louvered protective cover 3 enhances the heat dissipation performance of the air conditioner outdoor unit while ensuring the protection of the air conditioner outdoor unit.

[0049] The present invention can also set a multi-point probe temperature sensor array to monitor the air inlet temperature of the air conditioner outdoor unit 1, and realize dynamic adjustment of the atomizing spray device by analyzing the temperature changes at different positions. When the air inlet temperature is too high, the system automatically increases the spraying intensity; when the set temperature is reached, the spraying intensity is automatically reduced, forming a stable and energy-saving operation mode.

[0050] It should be noted that the feedback signals of various sensors of the present invention have a priority order. Specifically, the feedback signals of the high liquid level sensor 11 and the low liquid level sensor 12 are level one, the feedback signal of the contact temperature sensor is level two, and the feedback signal of the probe temperature sensor is level three. That is, when the feedback signals of the high liquid level sensor 11 and the low liquid level sensor 12 conflict with the feedback signals of the contact temperature sensor or the probe temperature sensor, the feedback signals of the high liquid level sensor 11 and the low liquid level sensor 12 shall prevail; when the feedback signal of the contact temperature sensor conflicts with the feedback signal of the probe temperature sensor, the feedback signal of the contact temperature sensor shall prevail.

[0051] A control method for the above-mentioned integrated protection and cooling system for an air conditioner outdoor unit comprises the following steps: Step 1, when the air conditioner outdoor unit 1 is started, condensed water flows into the water collecting tank 10 through the air conditioner outdoor unit condensed water drain pipe 6, the filter 16 and the first connecting pipe 14 in sequence; at the same time, the system is powered on, the PLC controller 20 is automatically initialized, and the high liquid level sensor 11, the low liquid level sensor 12, the first temperature sensor 7 and the second temperature sensor 8 are activated, and the water pump 13 of the atomizing spray device is activated and the five louver driving motors 9 are controlled to rotate, so that the louvers on the five surfaces of the louvered protective cover 3 are opened and adjusted to an inclination angle of 90° with the frame of the louvered protective cover; Step 2, the high liquid level sensor 11 and the low liquid level sensor 12 monitor the water level of the water collecting tank 10 in real time and collect the liquid level signal; the second temperature sensor 8 monitors the condenser temperature of the air conditioner outdoor unit 1 in real time and collects the condenser temperature signal; the first temperature sensor 7 monitors the air inlet temperature of the air conditioner outdoor unit 1 in real time and collects the air inlet temperature signal; Step 3, the PLC controller 20 first analyzes the liquid level signal. If the liquid level signal is a low liquid level signal, the PLC controller 20 controls the water pump 13 to turn off to prevent the atomizing spray head 18 from running dry; if the liquid level signal is a high liquid level signal, the PLC controller 20 controls the water pump 13 to turn on and adjust it to the maximum, so as to achieve the maximum amount of spraying of the atomizing spray head 18 to prevent the water collecting tank 10 from overflowing; if the liquid level signal is a normal liquid level signal, the PLC controller 20 further analyzes the condenser temperature signal and the air inlet temperature signal; Step 4: When the liquid level signal is a normal liquid level signal, if one of the condenser temperature signal and the air inlet temperature signal exceeds the set operating temperature threshold, the PLC controller 20 controls the water pump 13 to start, and adjusts the size according to the range of the air inlet operating temperature threshold, thereby realizing adaptive spraying of the atomizing spray head 18 and cooling the air conditioner outdoor unit 1; At the same time, the PLC controller 20 controls the rotation amplitude of the five shutter drive motors 9 according to the working temperature of the air inlet, thereby adjusting the opening angles of the shutters on the five surfaces of the shutter-type protective cover 3 to ensure the effect of heat dissipation and ventilation; The operating temperature threshold of the condenser is set at 50°C. The operating temperature threshold of the air inlet is set at 35°C, and when the air inlet temperature is between 35-40°C, the atomizing spray device is in a low water pressure state; when the air inlet temperature is between 40-45°C, the atomizing spray device is in a medium water pressure state; when the air inlet temperature is greater than 45°C, the atomizing spray device is in a high water pressure state.

[0052] The adjustable angle of the louver of the louver protection cover 3 is between 90° and 10° with the frame of the louver protection cover 3. When the system is just started, the louver is first adjusted to an angle of 90° with the frame of the louver protection cover. If the working temperature of the air inlet reaches 35°C, the 90° angle is maintained. If the working temperature of the air inlet is less than 35°C, the angle can be adjusted between 90° and 30°. If it rains, the angle can be adjusted between 10° and 30°.

[0053] Step 5, a part of the water mist sprayed by the atomizing spray head 18 is blown out of the louvered protective cover 3 along with the air outlet of the air conditioner outdoor unit 1, and the other part falls into the water collection tank 4 below the atomizing spray head 18, so as to be used by the green plants 5 planted in the water collection tank 4 to absorb excess condensed water, thereby avoiding the problem of moisture in the louvered protective cover 3; Step 6: After the air conditioner outdoor unit 1 stops working, the system continues to run for a period of time until the condenser temperature signal and the air inlet temperature signal drop below the set threshold value, and the PLC controller 20 controls the reverse rotation of the five shutter drive motors 9 to close all the shutters on the five surfaces of the shutter protective cover 3; Step 7: Shut down the system and regularly remove the filter 16 and the water treatment device 19 for cleaning or replacement.

[0054] The automatic control system of the present invention monitors the operating status of the entire system through distributed sensors. The feedback signals of the liquid level sensor and the temperature sensor are used to ensure that the water level of the condensate water collection tank is appropriate, and the working status of the atomizing spray device is dynamically adjusted according to the real-time temperature of the condenser and the air inlet of the air conditioner outdoor unit, ultimately achieving intelligent control and energy-saving effects, and comprehensively improving the green and sustainable performance of the system.

[0055] The above description is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comprehensive protection and cooling system for an air conditioner outdoor unit, characterized in that: The invention comprises a base plate (2) for mounting an air conditioner outdoor unit (1), the base plate (2) being provided with a shutter-type protective cover (3) with adjustable shutter angles for protecting, dissipating heat and ventilating the air conditioner outdoor unit (1); a group of atomizing spray devices are arranged on the top surface of the interior of the shutter-type protective cover (3) around the air conditioner outdoor unit (1), and are responsible for cooling the air conditioner outdoor unit (1) through atomizing spray; a water collecting trough (4) is arranged on the upper surface of the base plate (2) for collecting cooling water sprayed by the atomizing spray device and condensed water directly discharged from the air conditioner outdoor unit (1), and green plants (5) with high temperature resistance and strong water absorption are planted in the water collecting trough (4); a condensed water collecting device is arranged on the top surface of the exterior of the shutter-type protective cover (3), and a condensed water drainage pipe (6) of the air conditioner outdoor unit is respectively connected to the water collecting trough (4) and the condensed water collecting device. The water inlet end is connected, and the water outlet end of the condensed water collection device is connected to the water inlet end of the atomizing spray device; a first temperature sensor (7) is arranged inside the louvered protective cover (3) for monitoring the air inlet temperature of the air conditioner outdoor unit (1) (3); a second temperature sensor (8) is arranged in the condenser of the air conditioner outdoor unit (1) for monitoring the real-time temperature of the condenser; the louvered protective cover (3), the atomizing spray device, the condensed water collection device, the first temperature sensor (7) and the second temperature sensor (8) are all electrically connected to a PLC controller (20), and the PLC controller (20) is responsible for coordinating and controlling the louvered protective cover (3), the atomizing spray device and the condensed water collection device according to the temperature detection signals of the first temperature sensor (7) and the second temperature sensor (8).

2. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The shutter type protective cover (3) is made of a wood-plastic composite material.

3. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The louvered protective cover (3) is composed of five frames, namely, front, rear, left, right and top. A plurality of parallel louvers are arranged in each frame, and both ends of each louver are rotatably connected to the frame in which it is located via an independent rotating shaft. All the rotating shafts located in the same frame are rotatably synchronized via a synchronizing member, and the synchronizing member is connected to a louver driving motor (9) via a transmission member. The louver driving motors (9) of the five frames are electrically connected to the PLC controller (20).

4. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The condensate collection device comprises a water collecting tank (10), a high liquid level sensor (11), a low liquid level sensor (12), a water pump (13), a first connecting pipe (14), a second connecting pipe (15) and a filter (16); the water collecting tank (10) is installed on the top surface outside the louvered protective cover (3); the high liquid level sensor (11) and the low liquid level sensor (12) are respectively arranged at corresponding positions on the inner wall of the water collecting tank (10); the water inlet of the water collecting tank (10) is connected to the first connecting pipe (14) through the first connecting pipe (15). The water outlet of the filter (16) is connected, and the water inlet of the filter (16) is connected to the outer end of the condensate drain pipe (6) of the air conditioner outdoor unit; the water pump (13) is arranged at the water outlet of the water collecting tank (10), and the water pump (13) is equipped with a solenoid valve; the water pump (13) is connected to the water inlet end of the atomizing spray device through the second connecting pipe (15); the high liquid level sensor (11), the low liquid level sensor (12), and the water pump (13) are all electrically connected to the PLC controller (20).

5. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The atomizing spray device comprises an atomizing spray pipe (17), an atomizing spray head (18) and a water treatment device (19); the atomizing spray pipe (17) is in a U-shaped structure and is suspended on the top surface of the interior of the louvered protective cover (3) in the form of surrounding the air conditioner outdoor unit (1); the atomizing spray head (18) is evenly arranged on the lower surface of the atomizing spray pipe (17) and is connected to the interior of the atomizing spray pipe (17); the water inlet on the upper surface of the atomizing spray pipe (17) is connected to the water outlet of the condensate collection device through the water treatment device (19); and the interior of the water treatment device (19) is provided with a filter screen (1901), activated carbon (1902) and a water softener (1903) in sequence according to the direction of water flow.

6. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The shape of the water collecting trough (4) corresponds to that of the atomizing spray device, both are U-shaped structures, and are arranged around the air conditioner outdoor unit (1); the water collecting trough (4) is composed of a front side trough, a left side trough, and a rear side trough, the front side trough is parallel to the rear side trough, the left side trough is slightly higher than the front side trough and the rear side trough, and there are inclined slopes at the connection between the left side trough and the front side trough and the rear side trough.

7. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The green plants (5) are one or both of mosses and ferns.

8. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The first temperature sensor (7) is a probe-type temperature sensor, which is arranged in a single point or array manner on the side and back of the interior of the louvered protective cover (3), and the probe of the probe-type temperature sensor faces the side air inlet and the rear air inlet of the air conditioner outdoor unit (1).

9. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, characterized in that: The second temperature sensor (8) is a contact temperature sensor, and the contact temperature sensor is arranged in a condenser of the air conditioner outdoor unit (1).

10. A control method for a comprehensive protection and cooling system for an air conditioner outdoor unit according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1) When the air conditioner outdoor unit (1) is started, condensed water flows into the water collecting tank (10) in sequence through the air conditioner outdoor unit condensed water drain pipe (6), the filter (16) and the first connecting pipe (14); at the same time, the system is powered on, the PLC controller (20) is automatically initialized, and the high liquid level sensor (11), the low liquid level sensor (12), the first temperature sensor (7) and the second temperature sensor (8) are activated, and the water pump (13) is activated and the five louver drive motors (9) are controlled to rotate, so that the louvers on the five surfaces of the louvered protective cover (3) are opened and adjusted to an inclination angle of 90° with the frame of the louvered protective cover; Step 2) The high liquid level sensor (11) and the low liquid level sensor (12) monitor the water level of the water collecting tank (10) in real time and collect liquid level signals; the second temperature sensor (8) monitors the condenser temperature of the air conditioner outdoor unit (1) in real time and collects condenser temperature signals; the first temperature sensor (7) monitors the air inlet temperature of the air conditioner outdoor unit (1) in real time and collects air inlet temperature signals; Step 3) The PLC controller (20) first analyzes the liquid level signal. If the liquid level signal is a low liquid level signal, the PLC controller (20) controls the water pump (13) to be turned off to prevent the atomizing spray head (18) from running dry. If the liquid level signal is a high liquid level signal, the PLC controller (20) controls the water pump (13) to be turned on and adjusted to a maximum value, thereby achieving maximum spraying of the atomizing spray head (18) to prevent the water collecting tank (10) from overflowing. If the liquid level signal is a normal liquid level signal, the PLC controller (20) further analyzes the condenser temperature signal and the air inlet temperature signal. Step 4) When the liquid level signal is a normal liquid level signal, if one of the condenser temperature signal and the air inlet temperature signal exceeds the set working temperature threshold, the PLC controller (20) controls the water pump (13) to start, and adjusts the size according to the range of the air inlet working temperature threshold, thereby realizing adaptive spraying of the atomizing spray head (18) and cooling the air conditioner outdoor unit (1); at the same time, the PLC controller (20) controls the rotation amplitude of the five louver drive motors (9) according to the air inlet working temperature, thereby adjusting the opening angle of the louvers on the five surfaces of the louvered protective cover (3) to ensure the heat dissipation and ventilation effect; Step 5) a portion of the water mist sprayed by the atomizing spray head (18) is blown out of the louvered protective cover (3) along with the air outlet of the air conditioner outdoor unit (1), and another portion falls into the water collection tank (4) below the atomizing spray head (18) to be used by the green plants (5) planted in the water collection tank (4) to absorb excess condensed water, thereby avoiding the problem of moisture in the louvered protective cover (3); Step 6) After the air conditioner outdoor unit (1) stops working, the system continues to operate for a period of time until the condenser temperature signal and the air inlet temperature signal drop below a set threshold value, and the PLC controller (20) controls the five louver drive motors (9) to rotate in the opposite direction, so that all the louvers on the five surfaces of the louvered protective cover (3) are closed; Step 7) The system is shut down and the filter (16) and water treatment unit (19) are periodically removed for cleaning or replacement.

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