A comprehensive protection and cooling system for an air conditioner outdoor unit

Abstract

The application discloses a comprehensive protection and cooling system for an air conditioner outdoor unit, which comprises a bottom plate for mounting the air conditioner outdoor unit, and a louvered protective cover is arranged on the bottom plate; an atomizing spraying device is arranged on the top surface of the louvered protective cover; a water collecting groove is arranged on the bottom plate, and high-temperature-resistant and high-water-absorbing green plants are planted in the water collecting groove; a condensate water collecting device is arranged on the top surface of the louvered protective cover, and the condensate water collecting device is communicated with a condensate water drainage pipe of the air conditioner outdoor unit and the atomizing 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 application further comprises a PLC controller. The application sprays the air conditioner outdoor unit with condensate water of the air conditioner itself to improve energy utilization efficiency, adopts the angle-adjustable louvered protective cover to ensure the ventilation effect while protecting the air conditioner outdoor unit, and applies various sensors to monitor the operation state of the air conditioner, and the spraying amount and the louver angle are automatically adjusted through the PLC controller.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heating, ventilation and air conditioning, and particularly relates to a comprehensive protection and cooling system for an air conditioner outdoor unit. BACKGROUND

[0002] The rapid development of urbanization and the rapid growth of urban population lead to an increase in human heat activities, which further exacerbates the urban heat island effect and urban overheating. Urban environmental overheating affects people's daily life, including the reduction of environmental comfort and the increase of cooling demand. In such an environment, air conditioners have gradually become an indispensable cooling means for urban residents. However, the current air conditioning system also has a series of problems. First, when the air conditioner is running, the outdoor unit discharges heat from the indoor to the atmosphere, causing additional warming of the city and further increasing the building energy consumption. Second, 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, condensate water will be produced. This part of condensate water falls into the evaporator water pan under the action of gravity and is discharged to the outdoor through the drain pipe. However, the direct discharge of most condensate water to the outdoor not only causes environmental pollution, such as building facade wetness, condensate water production and large discharge amount, but also causes energy waste. At the same time, the existing air conditioner outdoor unit has problems such as easy entry of sundries, rust and aging, and the influence of air conditioner shell style and color on appearance.

[0003] In the field of protection and cooling of air conditioner outdoor units, the existing technology mainly relies on protective covers made of high-strength aluminum alloy and other metal materials. Although such materials have certain strength, they often have problems such as poor heat dissipation, easy corrosion and short service life. Metal materials are prone to rust in high-temperature and humid environments, which even affects the performance and service life of the air conditioner outdoor unit. In addition, the recycling and reuse rate of metal materials is low, which is difficult to meet the increasingly high environmental protection requirements. The characteristics of such materials lead to the fact that the air conditioner outdoor unit is prone to failure when exposed to the outdoor for a long time.

[0004] Traditional fixed protective covers provide certain protection, but cannot achieve flexible adjustment, limiting the heat dissipation effect of the air conditioner outdoor unit. Air flow is blocked, resulting in reduced heat dissipation efficiency, which limits the coefficient of performance (COP) of the air conditioner, especially in high-temperature weather, which easily leads to overheating of the equipment and affects the service life.

[0005] In addition, condensate water is usually directly discharged without being fully utilized, wasting resources and lacking effective cooling means. The condensate water collection and reuse technology of traditional air conditioning systems is still immature, and it is difficult to stably provide water source for cooling, which is particularly prominent in resource-intensive or high-efficiency air conditioning system design. When trying to use condensate water for cooling, problems such as improper water quality treatment, such as blockage of pipelines, scaling and corrosion, are often encountered, which brings challenges to system design.

[0006] Most of the existing control systems rely on manual operation, which cannot monitor and adjust the running state of air conditioner outdoor unit in real time, resulting in difficulty in optimizing overall energy efficiency. Although complex automatic control systems can partially solve this problem, there are great technical difficulties in sensor selection, system integration and signal processing, especially in maintaining stability under extreme weather and environmental conditions. SUMMARY

[0007] In view of the problems existing in the prior art, the present application provides a comprehensive protection and cooling system for an air conditioner outdoor unit, which can effectively protect the air conditioner outdoor unit and effectively cool and dissipate heat for the air conditioner outdoor unit through the reuse of air conditioner condensate water.

[0008] To solve the above technical problems and achieve the above technical effects, the present application is implemented by the following technical solutions:

[0009] A comprehensive protection and cooling system for an air conditioner outdoor unit, comprising a bottom plate for mounting the air conditioner outdoor unit, a louvered protective cover with adjustable louver angle is provided on the bottom plate, which serves to protect, dissipate heat and circulate air for the air conditioner outdoor unit.

[0010] A group of atomizing spray devices are provided on the top surface of the louvered protective cover around the air conditioner outdoor unit, which is responsible for cooling the air conditioner outdoor unit through atomizing spray; a water collecting groove is provided on the upper surface of the bottom plate for collecting cooling water sprayed by the atomizing spray devices and condensate water directly discharged by the air conditioner outdoor unit, and heat-resistant and highly water-absorbing green plants are planted in the water collecting groove; a condensate water collecting device is provided on the top surface of the outside of the louvered protective cover, the condensate water drain pipe of the air conditioner outdoor unit is in communication with the water inlet end of the water collecting groove and the condensate water collecting device respectively, and the water outlet end of the condensate water collecting device is in communication with the water inlet end of the atomizing spray device; a first temperature sensor is provided on the louvered protective cover for monitoring the real-time temperature of the air inlet of the air conditioner outdoor unit; a second temperature sensor is provided in the condenser of the air conditioner outdoor unit for monitoring the real-time temperature of the condenser.

[0011] The louvered protective cover, the atomizing spray device, the condensate water collecting device, the first temperature sensor and the second temperature sensor are electrically connected to a PLC controller, which is responsible for coordinating the control of the louvered protective cover, the atomizing spray device and the condensate water collecting device according to the temperature detection signals of the first temperature sensor and the second temperature sensor.

[0012] Further, the louvered protective cover is made of wood-plastic composite material.

[0013] Further, the louvered protective cover is composed of front, rear, left, right and upper five frame edges, each frame edge is provided with a plurality of parallel louvers, and both ends of each louver are rotatably connected to the frame edge through independent rotating shafts, all rotating shafts located in the same frame edge are rotatably synchronized through a synchronizing member, and the synchronizing member is connected to a louver driving motor through a transmission member, and the louver driving motors of the five frame edges are electrically connected to the PLC controller.

[0014] Further, the condensate water collecting device comprises 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 outside the louvered protective cover, the high liquid level sensor and the low liquid level sensor are respectively arranged at the corresponding positions of 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, the water inlet of the filter is connected to the outer end of the condensate water drainage 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 provided with an electromagnetic valve; the water pump is connected to the water inlet of the atomizing and spraying device through the second connecting pipe; the high liquid level sensor, the low liquid level sensor and the water pump are electrically connected to the PLC controller.

[0015] Further, the atomizing and spraying device comprises an atomizing and spraying pipe, an atomizing and spraying head and a water treatment device, the atomizing and spraying pipe is in a U-shaped structure, is hung on the top surface inside the louvered protective cover in the form of surrounding the air conditioner outdoor unit, the atomizing and spraying head is uniformly arranged on the lower surface of the atomizing and spraying pipe and is in communication with the inside of the atomizing and spraying pipe; the water inlet on the upper surface of the atomizing and spraying pipe is in communication with the water outlet of the condensate water collecting device through the water treatment device, and the inside of the water treatment device is sequentially provided with a filter screen, activated carbon and a water softener according to the water flow direction.

[0016] Further, the shape of the water collecting tank corresponds to the shape of the atomizing and spraying device, and both are in a U-shaped structure and are arranged around the air conditioner outdoor unit; the water collecting tank is composed of a front tank, a left tank and a rear tank, the front tank and the rear tank are in a parallel state, the left tank is slightly higher than the front tank and the rear tank, and there is an inclined slope at the connection between the left tank and the front tank and the rear tank.

[0017] Further, the green plants are one or both of moss and fern.

[0018] Further, the first temperature sensor is a probe type temperature sensor, the probe type temperature sensor is arranged on the side surface and the back surface inside 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.

[0019] Further, the second temperature sensor is a contact temperature sensor arranged in a condenser of the air conditioner outdoor unit.

[0020] A control method of the above-mentioned comprehensive protection and cooling system for air conditioner outdoor unit, comprising the following steps:

[0021] Step 1) When the air conditioner outdoor unit starts, the condensate water flows into the water collecting tank through the air conditioner outdoor unit condensate water drain pipe, filter and first connecting pipe in turn; at the same time, the system is powered on, the PLC controller is automatically initialized, and the high liquid level sensor, low liquid level sensor, first temperature sensor and second temperature sensor are activated, and the water pump (atomizing spray device) and the five louver drive motors are controlled to rotate, so as to open the louvers on the five surfaces of the louvered protective cover and adjust the inclination angle to 90° with the frame of the louvered protective cover;

[0022] 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 the liquid level signal; the second temperature sensor monitors the condenser temperature of the air conditioner outdoor unit in real time and collects the condenser temperature signal; the first temperature sensor monitors the temperature of the air inlet on the side and back of the air conditioner outdoor unit in real time and collects the air inlet temperature signal;

[0023] 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 be closed to avoid dry running of the atomizing spray head; if the liquid level signal is a high liquid level signal, the PLC controller controls the water pump to be opened and adjusted to the maximum, so as to realize the maximum 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;

[0024] Step 4) In the case of 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 be opened, and adjusts the size according to the range exceeding the air inlet working temperature threshold, so as to realize the adaptive spraying of the atomizing spray head and realize the cooling of 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, so as to adjust the opening angle of the louvers on the five surfaces of the louvered protective cover, so as to ensure the effect of heat dissipation and ventilation;

[0025] Step 5) Part of the water mist sprayed by the atomizing spray head is blown out of the louvered protective cover by the air outlet of the air conditioner outdoor unit, and the other part falls into the water collecting tank below the atomizing spray head for the green plants planted in the water collecting tank to take water to absorb excess condensed water, thereby avoiding the problem of moisture in the louvered protective cover;

[0026] 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 inlet temperature signal drop below the set threshold value, and the PLC controller controls the reverse rotation of the five louver drive motors to close all the louvers on the five surfaces of the louvered protective cover.

[0027] Step 7) The system is turned off, and the filter and water treatment device are periodically removed for cleaning or replacement.

[0028] The beneficial effects of the present application are:

[0029] 1. Application of environmentally friendly materials: The present application uses wood-plastic composite material to make the protective cover of the air conditioner outdoor unit, which has the advantages of water resistance, corrosion resistance, acid and alkali resistance, etc. Not only can greatly prolong the service life of the protective cover, but also can be 100% recycled, which meets the green environmental protection requirements and avoids the pollution problem caused by traditional aluminum alloy materials.

[0030] 2. Enhance the heat dissipation effect: The present application designs a rotatable louver structure, which can adjust the air flow direction and optimize the heat dissipation effect while protecting the air conditioner outdoor unit, thereby improving the overall performance of the air conditioning system and avoiding the poor heat dissipation caused by limited ventilation of the fixed protective cover.

[0031] 3. Recycling of condensed water: The present application effectively collects the condensed water generated by the air conditioner, which is used for atomizing and spraying cooling of the inlet and outlet of the outdoor unit after filtration, not only saving water resources, but also reducing the heat load of the air conditioner outdoor unit through the cooling effect, improving the energy utilization efficiency.

[0032] 4. Intelligent control system: The present application uses a PLC controller combined with water level, temperature and other sensors to realize intelligent adjustment of condensed water collection, spraying intensity and louver angle, real-time monitoring and control of the operation state of the outdoor unit, improving the automation and reliability of the system, and reducing the dependence on manual intervention.

[0033] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following is a preferred embodiment of the present application and the accompanying drawings are described in detail. The specific embodiments of the present application are given in detail by the following examples and their accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0035] Figure 1 A perspective view of the comprehensive protection and cooling system for the air conditioner outdoor unit according to the present application;

[0036] Figure 2 A top view of the comprehensive protection and cooling system for the air conditioner outdoor unit according to the present application;

[0037] Figure 3 A perspective view of the comprehensive protection and cooling system for the air conditioner outdoor unit according to the present application after removing the louvers;

[0038] Figure 4 A top view of the comprehensive protection and cooling system for the air conditioner outdoor unit according to the present application after removing the louvers;

[0039] Figure 5 An electrical connection block diagram of the comprehensive protection and cooling system for the air conditioner outdoor unit according to the present application;

[0040] Figure 6 A water connection block diagram of the comprehensive protection and cooling system for the air conditioner outdoor unit according to the present application.

[0041] The reference signs in the drawings represent: 1, air conditioner outdoor unit; 2, bottom plate; 3, louvered protective cover; 4, water collecting tank; 5, green plants; 6, air conditioner outdoor unit condensate water drainage pipe; 7, first temperature sensor; 8, second temperature sensor; 9, louver driving 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 screen; 1902, activated carbon; 1903, water softener; 20, PLC controller. DETAILED DESCRIPTION

[0042] The present application will be described in detail below with reference to the drawings and embodiments. The description herein is intended to provide a further understanding of the present application, and constitutes a part of this application. The illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute an improper limitation of the present application.

[0043] Reference Figures 1-6 As shown in the drawings, a comprehensive protection and cooling system for an air conditioner outdoor unit includes a bottom plate 2 for mounting the air conditioner outdoor unit 1. A louvered protective cover 3 with adjustable louver angle is provided on the bottom plate 2 to protect, cool and ventilate the air conditioner outdoor unit 1.

[0044] The louvered protective cover 3 adopts a louvered design and is composed of front, rear, left, right and upper five frame edges, each of which is provided with a plurality of parallel louvers, and both ends of each louver are rotatably connected to the frame edge through independent rotating shafts. All the rotating shafts located in the same frame edge are rotatably synchronized through a synchronizing member, and the synchronizing member is connected to a louver driving motor 9 through a transmission member. The louver driving motor 9 drives the louvers to rotate through the transmission member and the synchronizing member, so as to realize rapid heat dissipation inside the louvered protective cover 3 and air flow through the air inlet of the air conditioner outdoor unit 1.

[0045] Meanwhile, all the frame edges and louvers of the louvered protective cover 3 are made of wood-plastic composite material. At present, most of the protective covers of air conditioner outdoor units are made of high-strength aluminum alloy material, which can cause poor heat dissipation of the air conditioner outdoor unit, shorten the service life, and due to the characteristics of aluminum alloy, the outdoor unit can be more seriously burned. The wood-plastic composite material used in the present application has good strength performance, and compared with other wood materials, it has excellent water resistance, corrosion resistance, can resist strong acid and alkali, does not rust, and does not breed bacteria, is not easy to be worm-eaten, and does not grow fungi. The service life is long, which can reach more than 50 years. The biggest advantage of this material is to turn waste into treasure, and it can be 100% recycled and produced, can be decomposed, will not cause "white pollution", and belongs to green environmental protection products.

[0046] Alternatively, all the frame edges and louvers of the louvered protective cover 3 can also be made of bamboo-wood composite material or weather-resistant plastic. These materials have similar water resistance, corrosion resistance and recyclable characteristics, but the cost and weather resistance are slightly different. The bamboo-wood material has natural moisture absorption performance, which can further slow down the accumulation of moisture around the louvered protective cover 3, and is helpful to prolong the service life of the equipment.

[0047] The top surface of the louvered protective cover 3 is provided with a condensate water collecting device. The condensate water collecting 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 a closed structure, installed on the top surface of the louvered protective cover 3, for collecting the condensate water discharged by the condenser of the air conditioner outdoor unit 1. The water inlet of the water collecting tank 10 is connected with the water outlet of the filter 16 through the first connecting pipe 14, and the water inlet of the filter 16 is connected with the outer end of the air conditioner outdoor unit condensate water drain pipe 6. The air conditioner outdoor unit condensate water drain pipe 6 guides the condensate water discharged by the air conditioner outdoor unit 1 to 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 5 μm or above, and is responsible for filtering the condensate water before it enters the water collecting tank 10, so as to remove suspended matters such as silt and rust in the condensate water and prevent the nozzle of the atomizing spraying 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 sends the condensate water in the water collecting tank 10 to the atomizing spraying device for use through the second connecting pipe 15. The high liquid level sensor 11 and the low liquid level sensor 12 are arranged at corresponding positions on the inner wall of the water collecting tank 10 respectively, for monitoring the water level in the water collecting tank 10 in real time, so as to ensure that the water pump 13 is started when the water level is too high, to avoid overflow of the water collecting tank 10, and ensure that the water pump 13 is stopped when the water level is too low, to avoid dry running of the system due to emptying of the water collecting tank 10. The water pump 13 can be selected according to the required power, and the water pump 13 is provided with an electromagnetic valve. According to different situations of the temperature of the air inlet of the air conditioner outdoor unit 1 or the temperature of the condenser, the spraying intensity of the atomizing spraying device can be divided into three levels of low, medium and high by adjusting the size of the electromagnetic valve of the water pump 13. For example, when the temperature is high, the nozzle sprays with large water volume and high frequency, and when the temperature is medium, the nozzle sprays with medium frequency, to ensure the maximum utilization of system energy efficiency.

[0048] The top surface inside the louvered protective cover 3 is provided with a set of atomizing spraying devices around the air conditioner outdoor unit 1, which is responsible for cooling the air conditioner outdoor unit 1. The atomizing spraying device includes an atomizing spraying pipe 17, an atomizing spraying head 18 and a water treatment device 19. The atomizing spraying pipe 17 is in a U-shaped structure, which is hung on the top surface inside the louvered protective cover 3 in the form of surrounding the air conditioner outdoor unit 1. The atomizing spraying head 18 is uniformly arranged on the lower surface of the atomizing spraying pipe 17 and communicates with the inside of the atomizing spraying pipe 17. The upper surface of the atomizing spraying pipe 17 is provided with a water inlet, which is connected with the water pump 13 through the water treatment device 19 and the second connecting pipe 15. The atomizing spraying head 18 selects a fine spraying type nozzle to ensure uniform spraying, and the spraying amount is adjusted by the water pump 13 and its electromagnetic valve. The atomizing spraying head 18 sprays the condensed water uniformly, thereby reducing the air temperature inside the louvered protective cover 3 and absorbing heat. This cooling method is particularly effective in high temperature weather, and reduces the heat load of the air conditioner outdoor unit 1 by cooling. The inside of the water treatment device 19 is sequentially provided with a filter screen, activated carbon and a water softener according to the water flow direction. Among them, the filter screen 1901 is responsible for removing the suspended matter of the condensed water, the activated carbon is responsible for absorbing the calcium and magnesium ions in the condensed water to prevent the aluminum sheet of the atomizing spraying device from being corroded, and the water softener 1903 is responsible for removing the calcium and magnesium ions in the condensed water to prevent the aluminum sheet of the atomizing spraying device from being scaled, so that the system runs more stably.

[0049] The upper surface of the bottom plate 2 is provided with a water collecting groove 4 for collecting the cooling water sprayed by the atomizing spraying device and the condensed water directly discharged by the air conditioner outdoor unit 1. The air conditioner outdoor unit condensed water drain pipe 6 communicates with the water collecting groove 4, and the water collecting groove 4 is planted with green plants 5 with high temperature resistance and strong water absorption. The position of the water collecting groove 4 corresponds to the position of the atomizing spraying pipe 17, and both are in a U-shaped structure and are arranged around the air conditioner outdoor unit 1. The water collecting groove 4 is spliced by a front groove, a left groove and a rear groove. The front groove and the rear groove are in a parallel state, the left groove is slightly higher than the front groove and the rear groove, and there is an inclined slope at the connection between the left groove and the front groove and the rear groove. As preferred, the inclination angle of the inclined slope is 1°, which can ensure that the green plants 5 do not flow away with the soil and also make the excess water flow out, prevent the green plants 5 from being in an overly wet environment, and maintain appropriate humidity and temperature.

[0050] The green plants 5 can be one or both of moss and fern. Such plants can maintain photosynthetic capacity under high temperature conditions of 40-45 DEG C, can tolerate extreme temperature, and grow in cold and dark environments. Such plants have strong water absorption, can appropriately reduce the air humidity of the environment, and have a cooling effect. Such plants can cool the environment in the louvered protective cover 3 through transpiration under high temperature, while maintaining the air humidity within a suitable range, thereby reducing the moisture accumulation of the air conditioner outdoor unit 1, and prolonging the service life of the equipment. The green plants 5 can not only absorb excess condensed water, but also reduce the problem of moisture in the louvered protective cover 3 caused by excessive condensed water.

[0051] The condensed water in the water collecting tank 10 can be first introduced into the water collecting groove 4 or directly introduced into the atomizing and spraying device according to requirements, so as to maintain the temperature of the air inlet of the air conditioner outdoor unit 1.

[0052] The louvered protective cover 3 is internally provided with a first temperature sensor 7 for monitoring 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 arranged on the side and back of the inside 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.

[0053] The air conditioner outdoor unit 1 is provided with a second temperature sensor 8 in the condenser for monitoring the real-time temperature of the condenser. The second temperature sensor 8 is a contact type temperature sensor, which is arranged in the condenser of the air conditioner outdoor unit 1.

[0054] The entire system of the present application is controlled by an automatic control system, which adopts a PLC controller 20. The PLC controller 20 is electrically connected with 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 louver drive motors 9 on the frames of the five surfaces of the louvered protective cover 3. The PLC controller 20 calculates and outputs control signals according to real-time sensing data, and automatically starts the atomizing and spraying device or adjusts the louver angle when the water level reaches a preset value or the temperature exceeds a threshold value, so as to realize precise control.

[0055] When the air conditioner outdoor unit 1 starts to work, the PLC controller 20 first controls the five louver drive motors 9 to work, so as to control all the louvers of the five surfaces of the louvered protective cover 3 to be opened and adjusted to an inclination angle of 90 DEG with the frame of the louvered protective cover, so as to facilitate the 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.

[0056] 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, a high water level signal is transmitted to the PLC controller 20, which controls the water pump 13 and its electromagnetic valve to open, and opens the atomizing spray device to the maximum frequency and the maximum opening degree, so as to discharge the excessive moisture 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, a low water level signal is transmitted to the PLC controller 20, which controls the water pump 13 and its electromagnetic valve to close, so as to stop the atomizing spray device from working.

[0057] 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 a real-time temperature signal V1 to the PLC controller 20. The PLC controller 20 compares the real-time temperature signal V1 with the set working temperature threshold of the condenser. If the real-time temperature signal V1 exceeds the set working temperature threshold of the condenser, the PLC controller 20 controls the water pump 13 and its electromagnetic valve to open, so that the cooling water of the atomizing spray device is atomized to cool and lower the temperature at the air inlet of the air conditioner outdoor unit 1. If the real-time temperature signal V1 is lower than the set working temperature threshold of the condenser, the PLC controller 20 controls the water pump 13 and its electromagnetic valve to close, indicating that the air inlet of the air conditioner outdoor unit 1 does not need to be cooled and lowered in temperature at this time.

[0058] Under the standard working condition of an outdoor environment temperature of 35℃, a condensation standard temperature difference of 15℃, and the best working temperature of the condenser being about 50℃, the working temperature threshold of the condenser can be set to 50℃. If the working temperature of the condenser is greater than 50℃, the atomizing spray device is opened.

[0059] The first temperature sensor 7, i.e. the probe temperature sensor, monitors the temperature of the air inlet of the air conditioner outdoor unit 1 in real time, and transmits a real-time temperature signal V2 to the PLC controller 20. The PLC controller 20 compares the real-time temperature signal V2 with the laboratory outdoor temperature V0 affecting the COP curve, and controls the opening degree of the water pump 13 and its electromagnetic valve according to the interval where the real-time temperature signal V2 exceeds the laboratory outdoor temperature V0 affecting the COP curve, so as to adjust the spray intensity of the atomizing spray device. The more the real-time temperature signal V2 exceeds the set threshold temperature, the greater the amount of spray.

[0060]

[0061] wherein, Indoor wet bulb temperature, Indoor dry bulb temperature (T) inlet temperature.

[0062]

[0063] The inlet temperature threshold is set to 35 DEG C. When the inlet temperature is between 35 DEG C and 40 DEG C, the atomizing spraying device is in a low water pressure state; when the inlet temperature is between 40 DEG C and 45 DEG C, the atomizing spraying device is in a medium water pressure state; and when the inlet temperature is greater than 45 DEG C, the atomizing spraying device is in a high water pressure state.

[0064] In addition, during the cooling process, the PLC controller 20 can also automatically adjust the louver angle 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 conditioner load condition (the real-time temperature of the inlet of the air conditioner outdoor unit monitored by the probe temperature sensor), so as to ensure that the air circulation and cooling of the louvered protective cover 3 are in the best effect. Through the adjustment of the louver angle, the louvered protective cover 3 enhances the cooling performance of the air conditioner outdoor unit while ensuring the protection of the air conditioner outdoor unit.

[0065] The application can also be provided with a multi-point probe temperature sensor array to monitor the inlet temperature of the air conditioner outdoor unit 1, and through the analysis of the temperature changes at different positions, dynamic adjustment of the atomizing spraying device is realized. When the inlet temperature is too high, the system automatically increases the spraying intensity; and when the set temperature is reached, the spraying intensity is automatically reduced, forming a stable and energy-saving operation mode.

[0066] It should be noted that the feedback signals of the various sensors of the application have a priority order, specifically, the feedback signals of the high liquid level sensor 11 and the low liquid level sensor 12 are first-class, the feedback signals of the contact temperature sensor are second-class, and the feedback signals of the probe temperature sensor are third-class, 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 are used as the reference, and when the feedback signals of the contact temperature sensor conflict with the feedback signals of the probe temperature sensor, the feedback signals of the contact temperature sensor are used as the reference.

[0067] A control method of the above-mentioned comprehensive protection and cooling system for an air conditioner outdoor unit, comprising the following steps:

[0068] Step 1, when the air conditioner outdoor unit 1 starts, the 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 turn; 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 controlled, and the five louver drive motors 9 are rotated, so that the louvers on the five surfaces of the louvered protective cover 3 are opened, and are adjusted to an inclination angle of 90° with the louvered protective cover frame;

[0069] 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 inlet temperature of the air conditioner outdoor unit 1 in real time and collects the inlet temperature signal;

[0070] 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 closed to avoid dry running of the atomizing spray head 18; 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 the maximum, so as to realize the maximum spraying of the atomizing spray head 18 to avoid overflow of the water collecting tank 10; if the liquid level signal is a normal liquid level signal, the PLC controller 20 further analyzes the condenser temperature signal and the inlet temperature signal;

[0071] Step 4, in the case of a normal liquid level signal, if one of the condenser temperature signal and the inlet temperature signal exceeds the set working temperature threshold, the PLC controller 20 controls the water pump 13 to be turned on, and adjusts the size according to the range exceeding the inlet working temperature threshold, so as to realize the adaptive spraying of the atomizing spray head 18 and realize the cooling of the air conditioner outdoor unit 1;

[0072] At the same time, the PLC controller 20 controls the rotation amplitude of the five louver drive motors 9 according to the inlet working temperature, so as to adjust the opening angle of the louvers on the five surfaces of the louvered protective cover 3, so as to ensure the effect of heat dissipation and ventilation;

[0073] The working temperature threshold of the condenser is set to 50℃. The working temperature threshold of the inlet is set to 35℃, and when the inlet temperature is between 35-40℃, the atomizing spray device is in a low water pressure state; when the inlet temperature is between 40-45℃, the atomizing spray device is in a medium water pressure state; when the inlet temperature is greater than 45℃, the atomizing spray device is in a high water pressure state.

[0074] The adjustable angle of the louvers of the louvered protective cover 3 is between 90° and 10° with the frame of the louvered protective cover 3. When the system is started, the louvers are first adjusted to an angle of 90° with the frame of the louvered protective cover, if the working temperature of the air inlet reaches 35℃, the angle is kept at 90°, if the working temperature of the air inlet is less than 35℃, the angle can be adjusted between 90° and 30°, if it is raining, the angle can be adjusted between 10° and 30°.

[0075] Step 5, part of the water mist sprayed by the atomizing spray head 18 is blown out of the louvered protective cover 3 by the air outlet of the air conditioner outdoor unit 1, and the other part falls into the water collecting tank 4 below the atomizing spray head 18, so that the green plants 5 planted in the water collecting tank 4 can take water to absorb excess condensed water, avoiding the problem of dampness in the louvered protective cover 3;

[0076] Step 6, when 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, the PLC controller 20 controls the reverse rotation of the five louver drive motors 9 to close all the louvers on the five surfaces of the louvered protective cover 3;

[0077] Step 7, the system is turned off, and the filter 16 and the water treatment device 19 are taken out regularly for cleaning or replacement.

[0078] The automatic control system of the present application monitors the running state of the whole 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 collecting tank is appropriate, and the working state 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, so as to realize intelligent control and energy saving effect, and comprehensively improve the green and sustainable performance of the system.

[0079] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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 comprehensive protection and cooling system for an air conditioner outdoor unit, characterized in that, The application relates to an air conditioner outdoor unit protection device, which comprises a bottom plate (2) for mounting an air conditioner outdoor unit (1), a louvered protective cover (3) with adjustable louver angle is arranged on the bottom plate (2) and is used for protecting, cooling and ventilating the air conditioner outdoor unit (1); a group of atomizing spraying devices are arranged on the top surface of the louvered protective cover (3) and are used for cooling the air conditioner outdoor unit (1) through atomizing spraying; a water collecting groove (4) is arranged on the upper surface of the bottom plate (2) and is used for collecting cooling water sprayed by the atomizing spraying devices and condensate water directly discharged by the air conditioner outdoor unit (1); green plants (5) with high temperature resistance and strong water absorption are planted in the water collecting groove (4); condensate water collecting devices are arranged on the top surface of the louvered protective cover (3); a condensate water drainage pipe (6) of the air conditioner outdoor unit is communicated with the water inlet end of the water collecting groove (4) and the condensate water collecting devices; the water outlet end of the condensate water collecting devices is communicated with the water inlet end of the atomizing spraying devices; a first temperature sensor (7) is arranged in the louvered protective cover (3) and is used for monitoring the temperature of the air inlet of the air conditioner outdoor unit (1); a second temperature sensor (8) is arranged in the condenser of the air conditioner outdoor unit (1) and is used for monitoring the real-time temperature of the condenser; the louvered protective cover (3), the atomizing spraying devices, the condensate water collecting devices, the first temperature sensor (7) and the second temperature sensor (8) are electrically connected with a PLC controller (20); the PLC controller (20) is responsible for coordinating and controlling the louvered protective cover (3), the atomizing spraying devices and the condensate water collecting devices according to the temperature detection signals of the first temperature sensor (7) and the second temperature sensor (8). The atomizing spraying devices comprise atomizing spraying pipes (17), atomizing spraying heads (18) and water treatment devices (19); the atomizing spraying pipes (17) are in U-shaped structures, are hung on the top surface of the louvered protective cover (3) in the form of surrounding the air conditioner outdoor unit (1), the atomizing spraying heads (18) are uniformly arranged on the lower surfaces of the atomizing spraying pipes (17) and are communicated with the interiors of the atomizing spraying pipes (17); the water inlets on the upper surfaces of the atomizing spraying pipes (17) are communicated with the water outlets of the condensate water collecting devices through the water treatment devices (19); the interiors of the water treatment devices (19) are sequentially provided with filter screens (1901), activated carbons (1902) and water softeners (1903) according to the water flow direction. The shape of the water collecting groove (4) corresponds to the shape of the atomizing spraying devices, both are in U-shaped structures and are arranged around the air conditioner outdoor unit (1); the water collecting groove (4) is composed of a front groove, a left groove and a rear groove; the front groove is parallel to the rear groove; the left groove is slightly higher than the front groove and the rear groove; and there are inclined slopes at the connecting positions of the left groove and the front groove and the rear groove.

2. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, wherein The louvered protective cover (3) is made of wood-plastic composite material.

3. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, wherein The louvered protective cover (3) is composed of front, rear, left, right and upper five frame edges, each frame edge is provided with a plurality of parallel louvers, and both ends of each louver are rotatably connected to the frame edge through independent rotating shafts, all rotating shafts located in the same frame edge are rotatably connected through a synchronous member, the synchronous member is connected to a louver driving motor (9) through a transmission member, and the louver driving motors (9) of the five frame edges 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, wherein The condensate water collecting 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 water outlet of the filter (16) through the first connecting pipe (14), the water inlet of the filter (16) is connected to the outer end of the condensate water drainage 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 is provided with an electromagnetic valve; the water pump (13) is connected to the water inlet of the atomizing and spraying 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 electrically connected to the PLC controller (20).

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

6. The integrated protection and cooling system for an air conditioner outdoor unit according to claim 1, wherein The first temperature sensor (7) is a probe type temperature sensor, which is arranged on the side surface and the back surface inside 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).

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

8. A control method of the integrated protection and cooling system for the outdoor unit of an air conditioner according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: Step 1) when the air conditioner outdoor unit (1) is started, the condensate water flows into the water collecting tank (10) through the condensate water drainage pipe (6) of the air conditioner outdoor unit, 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, 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, the water pump (13) is activated, and the five louver driving motors (9) are controlled to rotate, so that the louvers on the five frame edges of the louvered protective cover (3) are opened and adjusted to an inclination angle of 90° with the louvered protective cover frame. 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 closed to avoid dry running of the atomizing spray head (18); 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 the maximum, so as to realize the maximum spraying of the atomizing spray head (18) to avoid overflow of the water collecting tank (10); if the liquid level signal is a regular liquid level signal, the PLC controller (20) further analyzes the condenser temperature signal and the air inlet temperature signal; Step 4) In the case of a regular 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 be turned on, and the size is adjusted according to the range exceeding the air inlet working temperature threshold, so as to realize the adaptive spraying of the atomizing spray head (18) and realize the cooling of 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, so as to adjust the opening angle of the five surfaces of the louvered protective cover (3) to ensure the effect of heat dissipation and ventilation; Step 5) Part of the water mist sprayed by the atomizing spray head (18) is blown out of the louvered protective cover (3) with the air outlet of the air conditioner outdoor unit (1), and the other part falls into the water collecting tank (4) below the atomizing spray head (18) to supply water for the green plants (5) planted in the water collecting tank (4) to absorb excess condensed water and avoid the problem of dampness 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, and the PLC controller (20) controls the reverse rotation of the five louver drive motors (9) to close all the louvers on the five surfaces of the louvered protective cover (3); Step 7) The system is turned off, and the filter (16) and the water treatment device (19) are taken out regularly for cleaning or replacement.

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