High-efficiency air conditioner condensate water recycling device for base station machine room

Abstract

The invention discloses a high-efficiency air conditioner condensate water recycling device for a base station machine room. The high-efficiency air conditioner condensate water recycling device comprises a condensate water collecting unit, a water quality steady-state unit, a water storage unit, a water supply unit, an atomization execution unit, a control unit and a safety protection unit. The condensate water collecting unit is used for collecting condensate water generated by the air conditioning equipment; the water quality steady-state unit sequentially comprises a sedimentation unit, a microfiltration unit, a UV-C sterilization unit and an electrolytic sterilization unit and is used for purifying condensate water; the water storage unit is provided with a water storage tank, a liquid level sensor and a heat tracing device and is used for storage and freezing prevention; the water supply unit is composed of a variable frequency pump, a pressure stabilizing tank, a proportional electromagnetic valve and a spraying tail end and used for stable conveying. The atomization execution unit comprises an atomization nozzle, an airflow adjusting device and a temperature and humidity sensor and is used for achieving evaporative cooling or moisturizing. The problems that the condensate water recycling rate is low, the water quality is unstable, freezing is likely to happen during storage, and spraying control is unreliable are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of energy saving and environmental control of communication base stations, and particularly relates to a high-efficiency air conditioner condensate water recycling device for a base station machine room. BACKGROUND

[0002] With the rapid development of communication networks, the number of base station machine rooms is increasing, and the air conditioning system inside the machine room is running for a long time to ensure that the equipment works under stable temperature and humidity conditions. In the prior art, the condensate water generated during the operation of the air conditioner is usually directly discharged to the outdoor or sewage pipeline through the drainage pipeline, and is not further utilized, causing waste of water resources. Some researches have proposed a scheme for recycling condensate water, but most of them are limited to simple collection and secondary utilization, lacking systematic processing and control mechanism.

[0003] The existing condensate water recycling technology has the following problems: first, dust, metal particles and microorganisms are often mixed in the condensate water during formation and collection. If not properly settled, filtered and sterilized, the water quality is difficult to maintain stable, and bacteria and algae are easy to breed, thereby affecting the safety of reuse. Second, the traditional water storage method is mostly a simple water tank, lacking liquid level monitoring and anti-freezing measures, which is easy to cause ice blocking or even damage the equipment in low temperature environment. Third, the existing water supply unit generally uses a fixed speed pump or a simple pipeline control, which is difficult to flexibly adjust the water supply flow and pressure according to the environmental requirements of the machine room, resulting in uneven spraying or increased energy consumption. Fourth, in the atomization utilization link, the existing technology often lacks temperature and humidity feedback regulation, and the water mist particle size and distribution are uncontrollable, which is difficult to achieve efficient cooling of the surface of the heat exchanger or accurate humidification of the machine room. Fifth, some systems lack perfect control and safety protection means, and once pipeline leakage or overflow occurs, it may threaten the precision equipment in the machine room. Therefore, the existing condensate water recycling and utilization method still has obvious deficiencies in water quality stability, water storage protection, water supply adjustment, spraying precision and operation safety, and it is urgent to propose a technical scheme with perfect structure, controllable operation and safety and reliability. SUMMARY

[0004] The present application provides a high-efficiency air conditioner condensate water recycling device for a base station machine room, which effectively solves the problems of low condensate water recycling rate, easy pollution and difficulty in direct use, icing risk during storage, and unstable water supply and spraying control. To solve the above problems, the technical scheme adopted by the present application is as follows: A high-efficiency air conditioner condensate water recycling device for a base station machine room, comprising: a condensate water collection unit for collecting condensate water generated by air conditioning equipment; A water quality stabilization unit connected with the condensate water collecting unit, for purifying and stabilizing the condensate water, the water quality stabilization unit comprising a sedimentation unit, a microfiltration unit, a UV-C sterilization unit and an electrolytic sterilization unit; A water storage unit connected with the water quality stabilization unit, for storing the purified condensate water and monitoring the liquid level, the water storage unit comprising a water storage tank, a liquid level sensor and a heat tracing device; A water supply unit connected with the water storage unit, for adjusting the water flow and supplying the system end, the water supply unit comprising a variable frequency pump, a pressure stabilizing tank, a proportional electromagnetic valve and a spray end; An atomization execution unit connected with the water supply unit, for micro-mist evaporative cooling or humidification on the outdoor condenser heat exchange surface or the machine room reuse end, the atomization execution unit comprising an atomization nozzle, an air flow adjusting device and a temperature and humidity sensor; A control unit connected with the water quality stabilization unit, the water storage unit, the water supply unit and the atomization execution unit, for controlling the operation of each unit based on the sensor signals; A safety protection unit connected with the water storage unit and the water supply unit, for executing protection in abnormal conditions, the safety protection unit comprising a leakage detection belt, an overflow tray and a normally closed electromagnetic valve.

[0005] Preferably, the condensate water collecting unit comprises a water tank and a filter unit arranged in the water tank, the filter unit comprising: a primary grid filter for trapping large particle impurities in the condensate water; a multi-layer mesh filter material for further filtering smaller suspended solids; a blowdown port and a blowdown valve are arranged at the outlet of the filter unit for regularly discharging deposited impurities.

[0006] Preferably, the water quality stabilization unit is sequentially connected with a sedimentation unit, a microfiltration unit, a UV-C sterilization unit and an electrolytic sterilization unit along the water flow direction; the sedimentation unit is a cyclone type sedimentation structure for removing larger particle impurities in the condensate water; the microfiltration unit is a multi-layer filter element structure that can be backwashed, and a differential pressure detection interface is arranged between the inlet and the outlet thereof; the UV-C sterilization unit is installed in a sealed cavity and cooperates with a flow switch; the electrolytic sterilization unit performs electrolytic sterilization on the water body through an electrode module and is electrically connected with the control unit to adjust the electrolytic intensity.

[0007] Preferably, in the water storage unit, the water storage tank is a closed and heat-insulated structure, the top of which is provided with a water inlet connected with the water quality stabilization unit and a water outlet connected with the water supply unit; the liquid level sensor is distributed at different height positions of the water storage tank for detecting low, medium and high liquid levels and transmitting signals to the control unit; the heat tracing device is arranged on the outer wall or the bottom of the water storage tank, the heat tracing device being an electric heating tape or an electric heating plate and being controlled by a temperature control switch or the control unit for heating the water storage tank to prevent freezing in low temperature environment.

[0008] Preferably, in the water supply unit, the variable frequency pump is communicated with the water outlet of the water storage unit for pressurized delivery of the stored condensed water; the pressure stabilizing tank is connected with the water outlet end of the variable frequency pump for buffering water pressure fluctuation and maintaining stable water flow; the proportional electromagnetic valve is arranged on the pipeline between the pressure stabilizing tank and the spray end for adjusting the water supply flow according to the instruction of the control unit; and the spray end is connected with the atomization execution unit for uniform distribution of the delivered condensed water to a plurality of atomizing nozzles.

[0009] Preferably, in the atomization execution unit, the atomizing nozzle is installed at the end of the water supply pipeline for atomizing the condensed water into tiny water droplets of 10-30 μm; the air flow adjusting device is arranged in cooperation with the atomizing nozzle for adjusting the air flow in the spray area to facilitate uniform diffusion of the water mist; and the temperature and humidity sensor is arranged in the spray action area for real-time detection of the ambient temperature and humidity and feedback of the detection signal to the control unit to realize dynamic adjustment of the spray amount.

[0010] Preferably, the control unit comprises a programmable controller or a microprocessor for receiving signals from the liquid level sensor, the temperature and humidity sensor and the sensors in the water quality stabilizing unit, and starting or stopping or adjusting the variable frequency pump, the proportional electromagnetic valve, the heat tracing device and other execution elements based on preset logic or algorithm, so as to realize automatic control of the water quality, water quantity and spray amount. The safety protection unit monitors the pipeline leakage condition in real time through the leakage detection belt, and drives the normally closed electromagnetic valve to close the water supply channel when an abnormality is detected, while cooperating with the overflow tray to collect the excess condensed water, so as to prevent the equipment room from being damaged by water.

[0011] The present application has the following advantages compared with the prior art: 1. The device can realize the whole process treatment of the condensed water from collection to purification through the combined design of the condensed water collection unit and the water quality stabilizing unit. The condensed water sequentially passes through the steps of sedimentation, microfiltration, UV-C sterilization and electrolytic sterilization before entering the water storage link, effectively removing suspended impurities, bacteria and harmful substances, and ensuring the long-term stability and safety of the water quality. This multi-stage cooperative purification mode overcomes the problems of unstable water quality and easy breeding of microorganisms when the condensed water is directly recycled, and provides reliable protection for the safe recycling of the condensed water.

[0012] 2. The water storage unit of the device adopts a closed heat preservation structure, and is used in cooperation with a liquid level sensor and a heat tracing device to realize double monitoring and adjustment of water quantity and water temperature. The liquid level sensor can monitor water level signals at different heights in real time to ensure the continuity and reliability of the water supply process; the heat tracing device prevents freezing of the water tank in low temperature environment to avoid adverse effects of water freezing on system operation. Compared with a traditional single water tank, the design has obvious advantages in ensuring the safety of condensate water storage and adapting to complex environment operation.

[0013] 3. The water supply unit of the device is closely matched with the atomization execution unit, and through dynamic adjustment of the variable frequency pump, the pressure stabilizing tank and the proportional electromagnetic valve, stable water pressure and precise flow control can be realized, and the condensate water is uniformly delivered to the atomizing nozzle through the spray end to form water mist with appropriate particle size. Under the combined action of the airflow adjusting device and the temperature and humidity sensor, the spray distribution is uniform and can be adjusted in real time according to the environmental parameters, thereby improving the heat exchange efficiency and humidifying effect. At the same time, the setting of the control unit and the safety protection unit ensures that the system has automatic monitoring and abnormal protection functions during operation, thereby improving the intelligent level and reliability of the overall operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an isometric view of a high-efficiency air conditioner condensate water recycling device for a base station machine room.

[0015] Figure 2 It is an internal isometric view of a high-efficiency air conditioner condensate water recycling device for a base station machine room.

[0016] Figure 3 It is an internal isometric view of a high-efficiency air conditioner condensate water recycling device for a base station machine room.

[0017] Figure 4 It is a functional block diagram of a high-efficiency air conditioner condensate water recycling device for a base station machine room.

[0018] In the drawings: 1 - condensate water collection unit; 1.1 - water tank (including filtration unit); 2 - water quality stabilizing unit; 2.1 - sedimentation unit; 2.2 - microfiltration unit; 2.3 - UV-C sterilization unit; 2.4 - electrolytic sterilization unit; 3 - water storage unit; 3.1 - water storage tank; 3.2 - liquid level sensor; 3.3 - heat tracing device; 4 - water supply unit; 4.1 - variable frequency pump; 4.2 - pressure stabilizing tank; 4.3 - proportional electromagnetic valve; 4.4 - spray end; 5 - atomization execution unit; 5.1 - atomizing nozzle; 5.2 - airflow adjusting device; 5.3 - temperature and humidity sensor; 6 - control unit (including data analysis and processing module, real-time monitoring system); 7 - safety protection unit; 7.1 - leakage detection belt; 7.2 - overflow tray; 7.3 - normally closed electromagnetic valve. Detailed Implementation

[0019] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figures 1-4 As shown, this invention provides a high-efficiency air conditioner condensate recycling device for base station equipment rooms. Its overall structure consists of a condensate collection unit 1, a water quality stabilization unit 2, a water storage unit 3, a water supply unit 4, an atomization execution unit 5, a control unit 6, and a safety protection unit 7. These units are interconnected via pipelines and electrical connections to form a closed-loop circuit, ensuring that the entire process of condensate collection, purification, storage, pressurization, and final atomization utilization is carried out under controllable, safe, and stable conditions. The condensate collection unit 1 includes a water tank 1.1, preferably made of corrosion-resistant 304 stainless steel, with a volume of 50-100 liters, suitable for the daily condensate volume of a typical base station air conditioner. The water tank contains a filtration unit, which includes a primary grid filter and multiple layers of mesh filter media. The primary grid has a pore size of 12 mm to intercept large particulate impurities mixed in the condensate. The mesh filter media is made of polypropylene or stainless steel wire woven structure, with a filtration accuracy between 50 and 100 microns, further removing suspended particles and ensuring the water entering the water quality stabilization unit 2 is initially clarified. The bottom of the water tank is equipped with a drain port and a drain valve, which adopts a DN15 copper or stainless steel ball valve structure to regularly discharge deposited impurities and prevent the accumulation of dirt inside the water tank.

[0021] The water quality stabilization unit 2 is sequentially connected to the sedimentation unit 2.1, microfiltration unit 2.2, UV-C sterilization unit 2.3, and electrolytic sterilization unit 2.4 along the water flow direction. The sedimentation unit 2.1 uses a cyclone sedimentation tank with a diameter of 200-300 mm and a height of 600 mm, achieving rapid sedimentation of large particles through centrifugal cyclone principles. The microfiltration unit 2.2 is a backwashable multi-layer filter structure with a filter pore size of approximately 5 micrometers and a shell pressure resistance rating of 0.6 MPa. It has differential pressure detection interfaces at the inlet and outlet; when the differential pressure exceeds 0.05 MPa, the control unit 6 issues a backwash command for cleaning. The UV-C sterilization unit 2.3 uses a low-pressure mercury lamp with a wavelength of 254 nm, with a single lamp power between 30-40W. Installed in a sealed cavity, it achieves a sterilization efficiency of over 99%, and is equipped with a flow switch for synchronized start-stop to prevent dry burning. The electrolytic sterilization unit 2.4 is composed of titanium alloy platinum-coated electrodes with an electrode spacing of 2-3 mm. Under the current regulation of the control unit 6, it electrolyzes the water to generate trace amounts of hypochlorous acid and reactive oxygen free radicals, thereby achieving deep treatment of residual bacteria and organic matter and ensuring long-term water quality stability.

[0022] The water storage unit 3 is arranged downstream of the water quality steady unit 2, and comprises a water storage tank 3.1, a liquid level sensor 3.2 and a heat tracing device 3.3. The water storage tank 3.1 has a closed and heat-insulated structure, the inner liner is made of food-grade PE, the outer shell is stainless steel sandwich, and is filled with 50 mm thick polyurethane foaming heat insulation layer to effectively reduce temperature difference conduction. The water storage tank has a capacity of 100-200 liters, and is provided with a water inlet at the top communicated with the water quality steady unit 2 and a water outlet at the bottom communicated with the water supply unit 4. The liquid level sensor 3.2 is an electrode type or ultrasonic wave type sensor, which is distributed at low, middle and high positions of the water storage tank, can feedback the liquid level state in real time, and sends a water pump water supplement or shutdown instruction to the linkage control unit 6 when the water level is too low. The heat tracing device 3.3 is installed on the outer wall or bottom of the water storage tank, and is preferably an electric heating belt or an electric heating plate with a power of 100-300 W, which is started and stopped by a temperature control switch or the control unit 6, and is automatically started to heat when the ambient temperature is lower than 5℃ to prevent condensate water from freezing and blocking.

[0023] The water supply unit 4 is connected with the water storage unit 3, and comprises a variable frequency pump 4.1, a pressure stabilizing tank 4.2, a proportional electromagnetic valve 4.3 and a spray terminal 4.4. The variable frequency pump 4.1 is a vertical stainless steel multistage centrifugal pump with a power of 0.37-0.75 kW, a maximum lift of 30 meters and a flow rate of 23 cubic meters / hour, which is speed-adjusted by a frequency converter to realize constant pressure or flow closed loop control. The pressure stabilizing tank 4.2 is a diaphragm type buffer tank with a capacity of 10 liters, which is used to reduce water pressure fluctuation caused by water pump start and stop to maintain stable pipeline pressure. The proportional electromagnetic valve 4.3 is a direct acting type regulating valve with a control accuracy of ±5%, which can dynamically adjust flow distribution according to the instruction of the control unit 6. The spray terminal 4.4 is connected with the atomization execution unit 5 to ensure uniform supply of multi-point spraying.

[0024] The atomization execution unit 5 comprises an atomizing nozzle 5.1, an air flow adjusting device 5.2 and a temperature and humidity sensor 5.3. The atomizing nozzle 5.1 is preferably a ceramic or stainless steel nozzle with a spray hole diameter of 0.1-0.2 mm, and the spray particle size is controlled within the range of 10-30 μm to ensure that the mist droplets evaporate quickly in the air without obvious water droplet settlement. The air flow adjusting device 5.2 is installed in the spraying area and adopts an adjustable fan or guide plate structure to guide air flow and make the mist droplets uniformly diffuse. The temperature and humidity sensor 5.3 is arranged in the spraying action area, has a measurement accuracy of ±0.5℃ and ±2% RH, and detects signals which are fed back to the control unit 6 in real time to dynamically adjust the spraying amount and spraying time length.

[0025] The control unit 6 is a PLC or an industrial embedded microprocessor, which is provided with a data analysis and processing module and a real-time monitoring system, and can receive signals of the liquid level sensor 3.2, the temperature and humidity sensor 5.3, a differential pressure detection interface and a flow switch in the water quality steady unit 2, and accurately control the frequency conversion pump 4.1, the proportional electromagnetic valve 4.3, the heat tracing device 3.3 and other executing elements after comprehensive calculation, so as to realize full-automatic management of water quality, water quantity and spraying effect. The control unit 6 can be linked with a building management system (BMS) of a base station through an Ethernet interface or an RS485 communication interface, so as to realize remote monitoring and parameter setting.

[0026] The safety protection unit 7 is arranged in the pipeline of the water storage unit 3 and the water supply unit 4, and includes a leakage detection belt 7.1, an overflow tray 7.2 and a normally closed electromagnetic valve 7.3. The leakage detection belt 7.1 is an electric resistance type or an optical fiber type sensing belt, which is laid along a key pipeline and triggers an alarm immediately once leakage occurs. The overflow tray 7.2 is arranged below the water storage tank 3.1 and is used for collecting overflow condensate water caused by abnormal water level or pipeline rupture. The normally closed electromagnetic valve 7.3 is connected in series in the water supply main pipeline and is closed immediately to cut off the water source when an abnormal signal is detected, so as to avoid damage of equipment in the machine room caused by water damage.

[0027] The condensate water collecting unit 1 includes a water tank 1.1 and a filter unit arranged in the water tank 1.1. The water tank 1.1 is preferably formed by welding a 304 stainless steel plate with a thickness of 2.0 mm, and has a volume of 50-120 liters designed according to the daily discharge amount of condensate water of the base station air conditioner. The inner wall of the water tank is subjected to rust-proof treatment, and the outer surface is sprayed with a heat insulation coating to reduce the influence of external temperature fluctuation on water temperature. The filter unit is installed at an upper position of the water inlet end of the water tank, so that preliminary filtration is completed immediately when condensate water enters. The filter unit includes a primary grid filter and a multi-layer mesh filter material. The primary grid filter is a strip-shaped grid structure made of stainless steel, with a grid spacing of 1.5-2.0 mm, and is mainly used for intercepting large-particle impurities such as hair, dust and plastic debris carried by the condensate water. The multi-layer mesh filter material is a three-layer structure, with the outermost layer being a 100 μm polypropylene mesh, the middle layer being a 50 μm stainless steel woven mesh, and the inner layer being a 20 μm nylon mesh. After the three layers are stacked, a gradient filtration effect is formed, which can effectively remove small-particle suspended matters in the condensate water, so that the water transparency of the subsequent water quality steady unit 2 reaches NTU≤5. A blowdown port and a blowdown valve are arranged at the outlet of the filter unit. The blowdown port has a diameter of DN15, and the blowdown valve is selected to be a corrosion-resistant ball valve, and the opening period can be set by the control unit 6 to be once every 48 hours, so as to timely discharge the pollutants deposited at the bottom of the filter unit and avoid secondary pollution.

[0028] The water quality steady unit 2 is arranged downstream of the condensed water collecting unit 1, and the structure is sequentially provided with a sedimentation unit 2.1, a microfiltration unit 2.2, a UV-C sterilization unit 2.3 and an electrolytic sterilization unit 2.4 in the water flow direction, and each unit is designed in a modular manner, facilitating independent replacement and maintenance. The sedimentation unit 2.1 is a cyclone type sedimentation tank, with a cylinder diameter of 250 mm and a height of 800 mm, and the water inlet is tangentially arranged to form a high-speed rotating water flow, which uses centrifugal force to throw the particles with larger density to the cylinder wall and then to the tank bottom. A sediment discharge port is arranged at the bottom of the tank, with a diameter of DN20, and an automatic sludge discharge valve is installed, which is opened once every 72 hours. This structure can effectively remove the silt particles and rust with a particle size greater than 50 μm.

[0029] The microfiltration unit 2.2 is a cylindrical filter shell, with a diameter of 150 mm and a height of 500 mm, and a plurality of filter cartridges are arranged inside. The filter cartridge material is a folded polypropylene membrane, with a filtration accuracy of 5 μm and a rated treatment flow of 2 cubic meters / hour. The microfiltration unit is designed with a backwashing structure, and a pressure difference detection interface is arranged between the inlet and the outlet, and a pressure difference sensor with a pressure range of 0-0.25 MPa is selected. When the detected pressure difference is greater than or equal to 0.05 MPa, the control unit 6 automatically switches the three-way valve to make the water flow reverse to wash the filter cartridge, so that the filter cartridge is not blocked during long-term operation.

[0030] The UV-C sterilization unit 2.3 is installed in a stainless steel sealed cavity, with an inner diameter of 80 mm and a length of 600 mm, and two low-voltage high-intensity mercury lamps are arranged inside, with a working wavelength of 254 nm and a single lamp power of 30 W. When the water flows through, the DNA of bacteria and algae is destroyed by UV-C radiation, so that the reproduction ability is lost, and the sterilization efficiency is greater than 99%. The UV-C sterilization unit is associated with the flow switch, and when the detected water flow is greater than or equal to 0.2 cubic meters / hour, the lamp is automatically turned on, and when the flow is zero, the lamp is automatically turned off to prevent damage due to empty burning. The lamp life is 9000 hours, and the maintenance period is 12 months.

[0031] The electrolytic sterilization unit 2.4 is located downstream of the UV-C sterilization unit, and the main body is an electrolytic reaction cavity made of titanium alloy material, with a built-in plate-shaped electrode coated with platinum to enhance corrosion resistance and catalytic performance. The electrode spacing is 3 mm, the total effective electrode area is 200 cm², and the working current is 0.5-2 A, which can be automatically adjusted by the control unit 6. During the electrolysis process, trace amounts of hypochlorous acid and hydroxyl radicals are generated, which can further kill the microorganisms that cannot be completely eliminated by UV-C, and decompose the organic matter in the water, preventing secondary pollution of the water body during storage. In order to ensure water quality safety, a residual chlorine sensor is arranged at the outlet of the electrolytic unit to monitor the effective chlorine content in the water in real time, and the control is within the safe range of 0.1-0.3 mg / L.

[0032] In summary, the condensate water collection unit 1 realizes efficient collection and primary filtration of condensate water, ensuring that large-particle impurities in raw water are effectively removed; the water quality stabilization unit 2 realizes the combination of physical filtration and chemical disinfection through multi-stage processing of sedimentation, microfiltration, UV-C sterilization, and electrolytic sterilization, ensuring that the condensate water meets the water quality standards for long-term storage and secondary use before entering the water storage unit 3. The unitized and staged purification design makes the system have the characteristics of strong processing capacity, stable operation, and easy maintenance, which not only ensures the cleanliness of the condensate water, but also provides a good foundation for subsequent water storage and water supply links.

[0033] The water storage unit 3 uses a sealed and insulated water storage tank 3.1 as the main body. The water storage tank preferably adopts a double-layer structure, with a 1.5mm thick galvanized steel plate as the outer layer, a 2.0mm thick food-grade 304 stainless steel plate as the inner layer, and a 30mm thick polyurethane rigid foam material as the intermediate layer to achieve good insulation performance. The effective volume of the water storage tank can be selected between 100-300 liters according to the size of the base station machine room, which can meet the condensate water storage needs of the air conditioning system running continuously for 12-24 hours. The water storage tank is provided with a water inlet and a water outlet at the top. The water inlet is connected to the outlet of the water quality stabilization unit 2 through a pipeline and is provided with a check valve to prevent backflow. The water outlet is located at the bottom of the water storage tank and is connected to the water supply unit 4 through a flange to ensure smooth discharge of the fluid without stagnation during water supply. The inner wall surface of the water storage tank is treated by electrolytic polishing and passivation, with a roughness of ≤0.4μm, effectively preventing bacterial growth and scale adhesion.

[0034] The liquid level sensor 3.2 is installed at different heights of the water storage tank 3.1 in a combination of electrode liquid level switches and ultrasonic liquid level meters. The low liquid level point is 50mm from the bottom of the tank, the medium liquid level point is 50% of the tank height, and the high liquid level point is close to the top of the tank. The electrode liquid level switch can realize rapid liquid level alarm, while the ultrasonic liquid level meter (range 0-2m, accuracy ±2mm) can provide continuous liquid level signals and transmit them to the control unit 6 in real time. Through this combined monitoring method, the water supply unit can be stopped to protect the water storage tank when the water level is too low, and the overflow discharge program can be started when the water level is too high, thereby ensuring the safe operation of the water storage tank.

[0035] The heat tracing device 3.3 is installed on the outer wall or bottom of the water storage tank 3.1, and can be in the form of a flexible electric heating belt or an aluminum alloy electric heating plate. The electric heating belt is made of high-temperature-resistant silicone rubber, has a rated voltage of 220V, a power density of 10W / m, and is wound around the outer surface of the bottom and side wall of the tank; the electric heating plate is in a flat plate structure, has a single plate power of 300W, and can be modularly attached to the outer wall of the tank. The heat tracing device is covered with thermal insulation cotton and an aluminum foil protective layer to ensure that heat is concentrated and conducted to the inner wall of the tank and to prevent energy loss. The temperature control mode adopts double control of a digital temperature controller and a control unit 6, and when the water storage temperature is lower than 5°C, the water storage temperature is automatically heated to 10°C and stopped, and the water storage can still be kept from freezing even under the condition of the lowest temperature of-20°C in winter in the north, thereby ensuring stable operation of the system throughout the year.

[0036] The water supply unit 4 is installed downstream of the water storage unit 3 and mainly includes a variable frequency pump 4.1, a pressure stabilizing tank 4.2, a proportional electromagnetic valve 4.3, and a spray terminal 4.4. The variable frequency pump 4.1 is directly connected to the water outlet of the water storage tank 3.1, is made of stainless steel, is a vertical multi-stage centrifugal pump, has a flow range of 0.5-2.0 m³ / h, a lift of 30-50 m, and a motor power of 0.75-1.5 kW, and has a variable frequency speed regulation function. The control unit 6 automatically adjusts the pump speed according to the actual spraying demand, thereby ensuring sufficient water supply pressure and reducing energy consumption and noise.

[0037] The pressure stabilizing tank 4.2 is installed at the water outlet end of the variable frequency pump 4.1, has a tank volume of 20-50 L, is internally provided with a diaphragm type buffer bag, has a rated working pressure of 0.6 MPa, and is used to absorb the instantaneous pressure fluctuation in the pump start-stop process, thereby keeping the water flow stable and avoiding impact on the downstream proportional electromagnetic valve and atomizing nozzle.

[0038] The proportional electromagnetic valve 4.3 is installed on the pipeline between the pressure stabilizing tank 4.2 and the spray terminal 4.4, is made of brass or stainless steel, has a nominal diameter of DN15, has a control accuracy of 0-100% adjustable, and has a response time of less than 500 ms. The proportional electromagnetic valve is driven by the control unit 6 to issue a PWM or 4-20 mA signal, thereby realizing accurate control of the flow. For example, when the humidity is high, the proportional electromagnetic valve can be only opened by 30%, thereby reducing the spraying amount; and when the load is large or the condenser temperature is high, the proportional electromagnetic valve can be opened to more than 80% to enhance the cooling effect.

[0039] The spray terminal 4.4 is in a distribution manifold structure, is provided with multiple uniformly distributed interfaces at the outlet, and is connected to the atomizing nozzle 5.1 in the atomizing execution unit 5 by using a quick plug connector. The spray terminal is made of pressure-resistant stainless steel, has a rated pressure of 1.0 MPa, can ensure stable water supply under high pressure, and is uniformly distributed. Through the multi-point water supply design of the spray terminal, simultaneous water supply to multiple spraying points of the condenser heat exchange surface or the machine room can be realized, thereby avoiding the phenomenon of local water mist shortage.

[0040] In summary, the water storage unit 3 realizes safe storage and all-year availability of condensed water through airtight heat preservation structure, accurate water level monitoring and anti-freezing heating design; the water supply unit 4 realizes intelligent adjustment and stable output of water supply flow and pressure through the organic cooperation of a frequency conversion pump, a pressure stabilizing tank and a proportional electromagnetic valve; the spray terminal 4.4 ensures uniform distribution of water flow and provides stable input conditions for the atomization execution unit 5. The combination of the two enables the system to operate efficiently and reliably in various environments and meets the actual needs of condensate water reuse in the machine room.

[0041] The atomization execution unit 5 is installed at the end of the water supply unit 4 and is used to realize the secondary utilization of condensed water, and the core thereof is an atomizing nozzle 5.1. A high-pressure micro-mist nozzle is preferably adopted, the nozzle body is made of 316L stainless steel, a ceramic nozzle plate is embedded therein, the aperture is 0.1-0.2 mm, and under a water supply pressure of 0.4-0.7 MPa, the nozzle can generate mist droplets with a particle size distribution in the range of 10-30 μm. The water mist in this particle size interval can not only evaporate rapidly to be used for heat dissipation of the condenser heat exchange surface, but also can be uniformly diffused in the machine room to achieve humidification. The atomization amount of a single nozzle is about 5-10 L / h, and according to the size of the machine room, 4-12 nozzles can be connected in parallel, so as to ensure that the spray coverage and mist amount meet the needs of different loads. The outlet angle of the nozzle is generally 60° or 80°, and through the cooperation of different installation angles and the pipeline arrangement of the spray terminal 4.4, different scenes can be flexibly adapted.

[0042] An air flow adjusting device 5.2 is arranged around the atomizing nozzle 5.1, which is used to guide and regulate the air flow in the spray area to avoid local aggregation or settlement of the water mist. The preferred form is an adjustable angle axial flow fan or a wind channel guide plate, the fan diameter is 200-300 mm, the rotating speed is 1000-1500 rpm, and the air volume is 1000-1500 m³ / h, which can generate uniform horizontal air flow during the spraying process to promote the rapid diffusion of mist droplets and the full mixing of the mist droplets with the ambient air. The air flow adjusting device is electrically connected with the control unit 6, and can automatically adjust the air volume according to the real-time data of the temperature and humidity sensor 5.3 to achieve the best evaporation cooling or humidification effect.

[0043] The temperature and humidity sensor 5.3 is arranged in the spray area and is selected from an industrial-grade high-precision integrated sensor, such as the SHT35 or AM2315 series, the temperature measurement range is -20-80℃, the accuracy is ±0.2℃, the humidity measurement range is 0-100%RH, and the accuracy is ±2%RH. The sensor is installed at a distance of 0.5-1.0 m from the nozzle to obtain the real environment data of the atomization effect. The sensor is connected with the control unit 6 through an RS485 or 4-20 mA signal interface to transmit data in real time. Based on the collected temperature and humidity information, the control unit 6 automatically adjusts the opening degree of the proportional electromagnetic valve 4.3 and the rotating speed of the frequency conversion pump 4.1 to realize dynamic adjustment of the spray amount and avoid excessive humidification or insufficient cooling.

[0044] The control unit 6, as the core control module of the system, can adopt PLC (such as Siemens S7-1200 series) or ARM microprocessor, and has data acquisition and operation program built-in. The input port of the control unit 6 receives the signals of the liquid level sensor 3.2, the temperature and humidity sensor 5.3, and the flow, pressure difference, and turbidity sensors in the water quality stabilizing unit 2; the output port controls the frequency conversion pump 4.1, the proportional electromagnetic valve 4.3, the heat tracing device 3.3, and the airflow adjusting device 5.2. The control logic is based on PID regulation and preset algorithm, for example, when the relative humidity in the machine room is lower than 45% RH, the spraying function is automatically started, and the nozzle flow is adjusted to 50% of the rated value; when the humidity reaches 60% RH, the water supply flow is gradually reduced, and part of the nozzles are closed, so as to maintain a stable environment. The control unit 6 can also be equipped with a communication module to support MODBUS or Ethernet protocol, so as to facilitate linkage with the building management system (BMS), realize remote monitoring and parameter adjustment.

[0045] The safety protection unit 7 is designed to ensure the safe operation of the machine room equipment. The leakage detection belt 7.1 is made of flexible resistance type leakage detection belt, which is arranged along the water supply pipeline and the ground in the spraying area. Once liquid leakage is detected, the resistance changes and an alarm signal is transmitted to the control unit 6. The normally closed electromagnetic valve 7.3 is installed at the inlet position of the water supply main pipe, which is closed within 1 second after receiving the control signal to prevent continuous water supply. The overflow tray 7.2 is arranged below the water storage tank 3.1, with a depth of 30-50 mm, made of ABS or stainless steel, and a capacity greater than 15% of the effective volume of the water storage tank. It can collect the condensed water overflowed from the water storage tank due to failure, and guide it to a safe area through the drain pipe to avoid water entering the machine room floor.

[0046] In summary, the atomization execution unit 5 realizes efficient evaporation cooling and humidification of condensed water through the synergistic effect of high-efficiency nozzles, airflow adjusting devices, and high-precision sensors; the control unit 6 realizes automatic operation and energy-saving control of the system through intelligent algorithm and multi-sensor feedback; and the safety protection unit 7 effectively avoids the risks of leakage and water overflow through multiple protection means, ensuring the safety and reliability of the entire system in complex machine room environments.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or adopt similar ways instead, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A high-efficiency air conditioning condensate recycling device for base station equipment rooms, characterized in that, include: Condensate collection unit (1) is used to collect condensate generated by air conditioning equipment; The water quality stabilization unit (2) is connected to the condensate collection unit (1) and is used to purify and stabilize the condensate. The water quality stabilization unit (2) includes a sedimentation unit (2.1), a microfiltration unit (2.2), a UV-C sterilization unit (2.3), and an electrolytic sterilization unit (2.4). The water storage unit (3) is connected to the water quality stabilization unit (2) and is used to store the purified condensate and monitor the liquid level. The water storage unit (3) includes a water tank (3.1), a liquid level sensor (3.2), and a heat tracing device (3.3). Water supply unit (4), connected to the water storage unit (3), is used to regulate water flow and supply water to the end of the system. The water supply unit (4) includes a frequency converter pump (4.1), a pressure stabilizing tank (4.2), a proportional solenoid valve (4.3), and a spray terminal (4.4). The atomizing execution unit (5) is connected to the water supply unit (4) and is used to perform micro-mist evaporation cooling or humidification on the heat exchange surface of the outdoor condenser or the recycling end of the machine room. The atomizing execution unit (5) includes an atomizing nozzle (5.1), an airflow regulating device (5.2), and a temperature and humidity sensor (5.3). The control unit (6) is connected to the water quality stabilization unit (2), water storage unit (3), water supply unit (4) and atomization execution unit (5) and is used to control the operation of each unit based on sensor signals. Safety protection unit (7), connected to the water storage unit (3) and the water supply unit (4), is used to perform protection in abnormal situations. The safety protection unit (7) includes a leak detection band (7.1), an overflow tray (7.2) and a normally closed solenoid valve (7.3).

2. The high-efficiency air conditioning condensate recycling device for base station equipment rooms according to claim 1, characterized in that, The condensate collection unit (1) includes a water tank (1.1) and a filter unit installed in the water tank (1.1). The filter unit includes: a primary grid filter for intercepting large particulate impurities in the condensate; multi-layer mesh filter media for further filtering smaller suspended solids; and a drain outlet and a drain valve at the outlet of the filter unit for periodically discharging deposited impurities.

3. The high-efficiency air conditioning condensate recycling device for base station equipment rooms according to claim 1, characterized in that, The water quality stabilization unit (2) is connected in sequence along the water flow direction to the sedimentation unit (2.1), the microfiltration unit (2.2), the UV-C sterilization unit (2.3), and the electrolytic sterilization unit (2.4); wherein, the sedimentation unit (2.1) is a vortex sedimentation structure used to remove larger particulate impurities in the condensate; the microfiltration unit (2.2) is a multi-layer filter structure that can be backwashed, and a differential pressure detection interface is provided between its inlet and outlet; the UV-C sterilization unit (2.3) is installed in a sealed cavity and used in conjunction with a flow switch; the electrolytic sterilization unit (2.4) performs electrolytic sterilization on the water through an electrode module and is electrically connected to the control unit (6) to adjust the electrolysis intensity.

4. The high-efficiency air conditioning condensate recycling device for base station equipment rooms according to claim 1, characterized in that, In the water storage unit (3), the water storage tank (3.1) is a sealed and heat-insulating structure. Its top is provided with an inlet that is connected to the water quality stabilization unit (2) and an outlet that is connected to the water supply unit (4). The liquid level sensor (3.2) is distributed at different height positions of the water storage tank (3.1) to detect low liquid level, medium liquid level and high liquid level and transmit signals to the control unit (6). The heat tracing device (3.3) is set on the outer wall or bottom of the water storage tank (3.1). The heat tracing device (3.3) is an electric heating belt or electric heating plate, and is started and stopped by a temperature control switch or control unit (6) to heat and prevent freezing of the water storage tank (3.1) in a low temperature environment.

5. A high-efficiency air conditioning condensate recycling device for base station equipment rooms according to claim 1, characterized in that, In the water supply unit (4), the variable frequency pump (4.1) is connected to the outlet of the water storage unit (3) to pressurize and transport the stored condensate; the pressure stabilizing tank (4.2) is connected to the outlet of the variable frequency pump (4.1) to buffer water pressure fluctuations and maintain a stable water flow. A proportional solenoid valve (4.3) is installed on the pipeline between the pressure tank (4.2) and the spray end (4.4) to adjust the water supply flow according to the instructions of the control unit (6); the spray end (4.4) is connected to the atomizing execution unit (5) to evenly distribute the delivered condensate to multiple atomizing nozzles (5.1).

6. A high-efficiency air conditioning condensate recycling device for base station equipment rooms according to claim 1, characterized in that, In the atomizing execution unit (5), the atomizing nozzle (5.1) is installed at the end of the water supply pipeline to atomize the condensed water into tiny water droplets of 10–30 μm; the airflow regulating device (5.2) is set in conjunction with the atomizing nozzle (5.1) to regulate the airflow in the spray area to promote uniform diffusion of water mist; the temperature and humidity sensor (5.3) is set in the spray action area to detect the ambient temperature and humidity in real time and feed the detection signal back to the control unit (6) to realize dynamic adjustment of the spray volume.

7. A high-efficiency air conditioning condensate recycling device for base station equipment rooms according to claim 1, characterized in that, The control unit (6) includes a programmable controller or microprocessor, used to receive signals from the liquid level sensor (3.2), temperature and humidity sensor (5.3) and sensors in the water quality steady-state unit (2), and to start, stop or adjust the actuators such as the variable frequency pump (4.1), proportional solenoid valve (4.3), and heating device (3.3) based on preset logic or algorithm, thereby realizing automatic control of water quality, water quantity and spray volume; The safety protection unit (7) monitors the pipeline leakage status in real time through the leakage detection band (7.1), and drives the normally closed solenoid valve (7.3) to close the water supply channel when an abnormality is detected. At the same time, it cooperates with the overflow tray (7.2) to collect excess condensate to prevent the equipment in the computer room from being damaged by water.

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