Energy-saving fresh air conditioner and installation method

Abstract

The invention provides an energy-saving fresh air conditioner and an installation method, and relates to the technical field of energy-saving air conditioners, the energy-saving fresh air conditioner comprises an indoor main unit, a partition tail end module, an intelligent sensing unit, a central cooperative control system and a uniform air supply assembly; the outdoor unit is connected with the indoor main unit through a refrigerant pipe matched flange and a connector, and the indoor main unit communicates with the partition tail end module through an air supply pipeline. The intelligent sensing unit collects environmental parameters, carries out localization preprocessing and uploads data to the central cooperative control system, energy can be accurately distributed according to actual loads of all areas, and compared with a traditional single-area air conditioner, energy is saved by 30%-40%; the efficient heat recovery core body in the multi-stage fresh air treatment unit greatly reduces energy consumption of fresh air treatment, the primary purified fresh air can be uniformly fed by arranging the uniform air supply assembly, a fan coil or a condensation pipe is uniformly subjected to air, energy conservation and low consumption are achieved, and the problems that a fresh air conditioner is too high in energy consumption and non-uniform in air supply are solved.

Description

Technical Field

[0001] The present invention relates to the field of energy-saving air conditioners, and in particular to an energy-saving fresh air air conditioner and an installation method thereof. Background Art

[0002] As a device with both air conditioning and fresh air replacement functions, fresh air air conditioners are widely used in various buildings. However, there are still some obvious problems in the operation of existing fresh air air conditioners, resulting in low utilization rate, which is mainly reflected in the following aspects: the fresh air processing mode of traditional fresh air air conditioners is relatively fixed, and usually a full heat exchanger is used for simple energy recovery. However, under extreme climatic conditions, the temperature and humidity differences between fresh air and return air are too large, and the full heat exchange efficiency is greatly reduced. At this time, the air-conditioning system needs to consume a lot of energy to deeply process the fresh air; at the same time, the existing equipment lacks accuracy in responding to indoor loads. Most fresh air air conditioners adopt a single-zone overall control mode, ignoring the uneven load problem caused by personnel distribution, equipment heat dissipation, sunlight differences, etc. in different areas of the same space.

[0003] In terms of installation, the installation process of traditional fresh air air conditioners is relatively complicated and has poor adaptability to the installation environment. The duct layout, equipment positioning and building structure are not well matched, which can easily lead to excessive wind resistance and high air leakage rate, further increasing system energy consumption. At the same time, the air supply is not uniform enough, resulting in increased energy consumption of fan coil units and condenser tubes after a period of use. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of existing fresh air air conditioners such as excessive energy consumption, insufficient control accuracy, cumbersome installation, and uneven air supply, and to provide an energy-saving fresh air air conditioner and an installation method. The air conditioner reduces energy consumption while ensuring indoor air quality and comfort through dynamic zoning energy management, multi-stage fresh air processing and intelligent control strategies; its installation method can adapt to different building scenarios, reduce installation losses, evenly supply air, and save energy and be environmentally friendly.

[0005] The present invention provides an energy-saving fresh air air conditioner and an installation method, which specifically includes: an outdoor unit, an indoor main unit, a partition terminal module, an intelligent sensing unit, a central collaborative control system and a uniform air supply component; the outdoor unit and the indoor main unit are connected through a refrigerant pipe with a flange and a joint, and the indoor main unit is connected to the partition terminal module through an air supply duct; the intelligent sensing unit collects environmental parameters and localizes pre-processing, and uploads the data to the central collaborative control system; the outdoor unit adopts a wide-band variable frequency compressor unit, equipped with a three-dimensional turbulent heat exchanger and a magnetic levitation variable frequency fan, and adopts a dynamic energy efficiency ratio (EER) closed loop Adjustment mechanism: The compressor operating frequency is set to 8-130Hz and is continuously adjustable. By real-time monitoring of the pressure enthalpy changes of the refrigerant cycle and the ambient thermal resistance, combined with the load prediction value output by the edge computing node, the frequency adjustment step is automatically corrected. Compared with the traditional system that relies solely on condensing temperature, it is more energy-efficient and low-consumption. The outdoor unit also integrates a multi-dimensional environmental sensing unit that can monitor the outdoor temperature range of -32°C to 52°C, the humidity range of 8% to 92% RH, PM2.5 and TSP concentrations in real time. The data is uploaded via a hybrid transmission protocol of "LoRaWAN and power line carrier", solving the signal blind spot problem of single wireless transmission.

[0006] The indoor host unit serves as the core unit for fresh air treatment and energy cascade recovery. The internally integrated components include: a multi-stage fresh air deep treatment unit, a return air ratio intelligent adjustment unit and an adaptive air supply unit. The multi-stage fresh air deep treatment unit includes: a primary purification section installed at the rear of the air inlet, using a gradient density composite filter, the composite filter is composed of a G3+activated carbon composite layer, and can adsorb some VOCs in addition to particulate matter, thereby extending the life of the rear-end filter; a high-efficiency heat recovery core (not shown in the figure) installed at the rear of the primary purification section. The high-efficiency heat recovery core adopts a countercurrent-crosscurrent composite flow channel structure. The core material is graphene-modified aluminum foil, and a nano-scale honeycomb microstructure is formed on the surface. The sensible heat recovery efficiency is ≥86%, the total heat recovery efficiency is ≥76%, the corrosion resistance is improved by 30%, and the wind resistance is reduced by 15%; the deep treatment section is installed at the rear of the fan coil and the condenser at the rear of the high-efficiency heat recovery core. The deep treatment section is provided with an integrated variable frequency heat pump module and a bipolar rotor dehumidification component. The heat pump module is coordinated and adjusted by a four-way valve and an electronic expansion valve. A wide temperature range of -5°C to 50°C is achieved. The rotary dehumidification component is filled with a composite adsorption material composed of silica gel, activated carbon and montmorillonite. The speed is adjusted by a servo motor and combined with the zoned humidity gradient data to achieve differentiated dehumidification. For example, high-humidity areas correspond to high rotary speeds. The fine filtration section is installed at the rear of the deep treatment section. The fine filtration section uses a combination of H13-level HEPA filter and UV-C photocatalytic module to decompose residual VOCs while efficiently filtering particulate matter. The return air ratio intelligent adjustment unit The four-way valve is composed of a fresh air valve, a return air valve, an exhaust valve and a bypass valve composed of a magnetostrictive proportional control valve. The fresh air ratio can be continuously adjusted within the range of 8%-100% through the linkage of the four-way valve. The "fresh air-return air-exhaust air" coupling mode can be dynamically switched according to the indoor CO2 concentration and the outdoor air quality, solving the contradiction between the fresh air quality and energy consumption of the traditional three-valve regulation, and achieving a higher energy-saving effect. The adaptive air supply unit adopts a mixed flow fan equipped with a rare earth permanent magnet synchronous variable frequency motor, and the air volume adjustment range is 280-3200m 3 / h, the wind pressure is automatically compensated through the "duct resistance-air volume feedback" double closed-loop control, and the distributed balance of the air supply pressure is achieved in combination with the real-time wind pressure data at the end of the partition.

[0007] The partition terminal module is divided into independent control areas according to the function of the indoor space. Each partition terminal module contains an air volume control valve, temperature sensor and humidity sensor. The air volume and temperature and humidity of each area are dynamically adjusted through intelligent algorithms to ensure that the environmental parameters of each area are independently and accurately controlled, thereby improving overall comfort and energy efficiency. The partition terminal module includes a variable air volume terminal device, a terminal secondary heat exchanger and an airflow optimization component. The variable air volume terminal device has a built-in piezoelectric air valve and a laser wind speed sensor, and the air supply volume adjustment range is 40-550m 3 / h, and the air supply direction can be dynamically adjusted according to the movement trajectory of personnel; the terminal secondary heat exchanger adopts a microchannel-plate composite structure, and controls the refrigerant flow through an electronic expansion valve + PID temperature compensation algorithm. The secondary adjustment range is 15-31°C, and the "cooling / heating / bypass" mode can be switched independently; the airflow optimization component includes a rotatable spherical air outlet and a honeycomb silencer static pressure box. The honeycomb silencer static pressure box replaces traditional sound-absorbing cotton, and reduces noise through airflow rectification and Helmholtz resonance principle. The operating noise is ≤32dB(A).

[0008] The intelligent sensing unit adopts the "ZigBee3.0+edge computing node" architecture, with a battery life of ≥3 years. The intelligent sensing unit consists of partitioned environmental sensors, system status sensors and energy consumption-energy efficiency dual monitoring sensors. Among them, the partitioned environmental sensors are equipped with VOC concentration monitoring, combined with temperature, humidity, CO2 concentration and personnel presence status. The system status sensor is equipped with a heat exchanger, frost sensor and fan vibration sensor to improve the accuracy of fault prediction. The energy consumption-energy efficiency dual monitoring sensor is equipped with a mass flow meter on the refrigerant pipeline connected to it, combined with the smart meter, to calculate the system COP in real time and feedback to the central collaborative control system.

[0009] The central collaborative control system adopts an industrial-grade edge computing gateway, supports WiFi6, Bluetooth 5.2 and 5G / NB-IoT communications, and realizes local autonomous control and cloud collaborative management. The core of the central collaborative control system is the federated learning-space-time coupling intelligent control algorithm, which uses distributed training of user-side data and public meteorological data.

[0010] Furthermore, the mounting rod is installed on the rear side of the primary purification section, and the primary purification section is installed on the rear side of the fan, and a movable sleeve is sleeved on the mounting rod, and a base is welded on the upper and lower sides of the mounting rod, and the base is fixedly connected to the inner cavity of the indoor main unit by a bolt assembly, and a fixed frame is fixedly connected between the bases, and a dial plate is provided on the movable sleeve, and two annular grooves are opened on the movable sleeve, and two clamping plates are rotatably clamped in each annular groove, and a rotating plate is clamped between the two clamping plates, and the rotating plate is rotatably connected to the fixed frame through an axis, and a rotating shaft is clamped on the fixed frame, and a ratchet, a pressure wheel and a fan are coaxially connected to the rotating shaft, and a claw is installed on the side of the ratchet, and the claw is connected to the fixed frame through an axis, and the pressure wheel is a cam with a notch, and a buffer pad is fixedly bonded to one side of the notch, and the two pressure wheels have the same direction but the radial positions are not in the same plane, and the notch of the pressure wheel is located on the side of the dial plate. The interior of the rotating plate is provided with a through hole and the through hole is penetrated by a movable sleeve. When the air conditioner is turned on, fresh air is sent from the inlet through the fan into the inner cavity of the indoor main unit, and is initially filtered by the primary purification section and then blown backwards, driving the fan to rotate. Since the claw limits the directional rotation of the ratchet, the blowing fan drives the coaxially connected pressure wheel and ratchet to rotate. Every time the pressure wheel rotates one circle, the paddle plate is moved up and down reciprocatingly. The buffer pad bonded to the notch of the pressure wheel can reduce the sound when hitting the paddle plate. The movable sleeve moves back and forth up and down under the movement of the paddle plate, driving the card plate to move up and down reciprocatingly. The card plate rotates and slides relatively inside the rotating plate at the same time. The card plate drives the rotating plate to swing back and forth, so that the air filtered by the primary purification section can be evenly supplied up and down for heating or cooling, and the wind receiving position of the fan coil or condenser is evenly distributed, and the heating or cooling can be balanced at the same time, which has an energy-saving effect.

[0011] The present invention discloses a fresh air control method for an energy-saving fresh air air conditioner, comprising the following steps:

[0012] 1) Startup phase: After the system is powered on, the central collaborative control system first performs a self-check and issues an alarm if a fault is found. If there is no fault, it collects the initial status of the outdoor ambient temperature, humidity, PM2.5 parameters and the temperature, humidity, and CO2 concentration of each zone, and generates an initial operation strategy based on the user-preset target parameters.

[0013] 2) Fresh air treatment process: After the outdoor fresh air is purified by the primary purification section to remove particulate matter, it enters the fresh air side of the heat recovery core and exchanges heat with the indoor return air on the exhaust side, initially reducing the energy consumption of fresh air treatment; the wind blows the fan to rotate, the coaxial drive drives the pressure wheel to rotate, the movable sleeve moves up and down, and the card drives the rotating plate to rotate to achieve uniform air supply. Based on the difference between the fresh air parameters after pretreatment and the target parameters, the central collaborative control system decides whether to start the deep treatment stage: if the temperature difference is greater than 3°C, the variable frequency heat pump module is started, and the cooling / heating capacity is changed by adjusting the compressor frequency to adjust the fresh air temperature to close to the target value; if the humidity difference is greater than 5% RH, the rotary dehumidifier or humidifier is started to adjust the fresh air humidity; the fresh air after deep treatment passes through the HEPA filter and is mixed with the indoor return air introduced through the return air valve in an optimized ratio. The mixed air is sent into the air duct system by the blower;

[0014] 3) Zoned air supply and regulation: Mixed air is delivered to the terminal modules of each zone through the main air duct. The central coordinated control system independently controls each module based on the zone environmental sensor data. For areas where the temperature deviates from the target value, the air valve opening of the variable air volume terminal is adjusted. At the same time, the electronic expansion valve of the terminal heat exchanger adjusts the refrigerant flow to achieve secondary temperature compensation. For unoccupied areas, the air supply volume is automatically reduced to the maintenance value, and the terminal secondary regulation function is disabled to reduce energy consumption.

[0015] 4) Energy recovery and energy-saving control: When the enthalpy difference between outdoor fresh air and indoor return air is greater than 5kJ / kg, the heat recovery core operates at full load; when the enthalpy difference is less than 2kJ / kg, the heat recovery core can be closed by switching the bypass valve to avoid wind resistance loss and save more energy;

[0016] 5) Dynamic control of fresh air ratio: when outdoor PM2.5≤50μg / m 3 When the temperature and humidity are close to the target values, the fresh air ratio can be increased to 80%-100%, reducing the return air mixing volume and lowering the mechanical processing energy consumption; when the outdoor air quality is poor or the temperature and humidity are extreme, the fresh air ratio is reduced to 10%-30%, reducing the fresh air processing load; based on the predicted load changes, the system gradually increases the equipment output 30 minutes in advance to avoid energy waste during peak hours; and automatically switches to energy-saving mode at night when no one is around.

[0017] 6) Shutdown phase: When the user manually shuts down or the preset shutdown time is reached, the system executes the shutdown process: gradually reducing the compressor frequency, closing the fresh air valve and return air valve, stopping the supply fan, and finally turning off the power. At the same time, the central collaborative control system records the operating data and updates the load forecast model.

[0018] The present invention discloses an installation method for an energy-saving fresh air air conditioner, comprising the following steps:

[0019] 1) Preliminary site survey and planning: Before installation, the building space dimensions, floor height, door and window locations, and structural load-bearing capacity must be measured; control areas must be divided according to functional use, and the installation locations of the partition terminal modules must be determined;

[0020] 2) Equipment selection and material preparation: Select the matching equipment model according to the survey results, prepare galvanized steel plates or environmentally friendly phenolic composite air ducts, air ducts with a thickness of ≥0.8mmd, refrigerant pipes, insulation materials, wires and brackets, sealants, cable ties and other auxiliary materials.

[0021] 3) Outdoor unit module installation: Choose a well-ventilated outdoor location away from bedroom windows to avoid direct sunlight; the equipment foundation is made of concrete or steel brackets with a horizontal error of ≤2mm / m; the outdoor unit is fixed to the foundation with expansion bolts, and shock-absorbing pads are installed to reduce vibration and noise; the refrigerant pipe is welded with nitrogen protection. After welding, the pressure test is carried out with the standard of 2.8MPa on the high-pressure side and 1.8MPa on the low-pressure side, and the pressure drop is ≤0.02MPa for 24 hours; the pipeline is as short and straight as possible, and the number of elbows used is reduced. The bending radius is ≥5 times the pipe diameter; the insulation layer is wrapped tightly, and the joints are sealed with tape to prevent condensation.

[0022] 4) Indoor host unit installation: Priority should be given to the ceiling or equipment room to ensure maintenance space; the host should be installed horizontally with an error of ≤1mm / m, and fixed by a hanger with an installation spacing of less than 1.5m, and a shock absorber should be installed between the hanger and the host; the host air supply and return air vents and the air duct should be connected with flanges, and 3mm thick rubber pads should be placed between the flanges to ensure sealing; the main air duct wind speed should be controlled at 8-12m / s, and the branch air duct should be ≤8m / s. Guide vanes should be installed at the bends of the air duct to reduce wind resistance; the gap between the air duct and the ceiling should be filled with fireproof rock wool to ensure fireproof sealing; the fresh air inlet should be located in a clean outdoor air area, ≥2m above the ground, and rainproof shutters and insect-proof nets should be installed; the horizontal distance between the exhaust outlet and the fresh air inlet should be ≥3m to avoid exhaust backflow; the pipe slope should be ≥0.5%, and a condensate discharge outlet should be set at the lowest point. The base should be installed to the indoor unit with a bolt assembly, the fixing bracket should be installed between the bases, and the fan should be located directly behind the primary purification section.

[0023] 5) Installation of partition terminal modules: The supply air outlet is installed at the upper part of the room, and the return air outlet is at the lower part. The distance between the supply and return air outlets is ≥1.5m to avoid short circuits. The air outlet and the air duct are connected with canvas or aluminum foil hoses to reduce vibration transmission. The variable air volume terminal and the terminal heat exchanger are installed in the ceiling and fixed with angle steel brackets to ensure a firm connection with the air duct. Perform air leakage detection after installation.

[0024] 6) Installation of intelligent sensor network: Zoned environmental sensors are installed in the center of the area, away from heat sources, air vents and direct sunlight; system status sensors are installed in designated locations according to the equipment manual; energy consumption monitoring sensors are connected in series in the equipment power supply circuit to ensure correct wiring; all sensors are wirelessly paired with the central controller, and the communication status is checked through the controller touch screen. For sensors with weak signals, the installation position can be adjusted or repeaters can be added.

[0025] 7) System debugging: Close all air vents, pressurize the air duct system to 500Pa, and the pressure drop within 30 minutes should be ≤50Pa, otherwise find the leak and seal it; start the system, test the operating status of the fan, compressor, valve and other equipment in turn, adjust the frequency range of the frequency conversion equipment to ensure smooth operation; calibrate the sensor data through professional instruments such as thermometers, hygrometers, and air volume meters to make the deviation between the displayed value and the actual value ≤1%; simulate different scenarios such as people entering, changes in outdoor temperature and humidity, and observe whether the system increases the air supply volume, changes the fresh air ratio, and other adjustments according to the preset strategy, and record the adjustment response time.

[0026] 8) Acceptance and delivery: After installation and commissioning, a continuous 8-hour operation test is carried out to monitor the temperature fluctuations, humidity fluctuations, CO2 concentration and system energy consumption deviations from the design values ​​in each area; the equipment manual, installation drawings, warranty card and operation training manual are handed over to the user to guide the user in using the central collaborative control system and remote APP.

[0027] Beneficial effects

[0028] The present invention can accurately allocate energy according to the actual load of each area, saving 30%-40% energy compared with traditional single-area control air conditioning; the high-efficiency heat recovery core in the multi-stage fresh air treatment unit greatly reduces the energy consumption of fresh air treatment. By setting up a uniform air supply component, the initially purified fresh air can be evenly delivered, so that the fan coil or condenser tube is evenly blown, saving energy and reducing consumption.

[0029] In addition, the secondary adjustment function of the partition terminal module ensures uniform temperature and humidity in each area, solving the regional temperature difference problem of traditional air conditioning; the multi-stage filtration system can effectively remove pollutants such as PM2.5 and bacteria, and dynamically adjust the fresh air volume in combination with CO2 concentration monitoring to improve comfort and air quality.

[0030] In addition, by combining regional functional correlation with weather forecasts, the cooling / heating load and fresh air demand forecast for the next 1-48 hours can be achieved. The control algorithm based on deep learning can autonomously learn user habits and environmental changes, adjust the operation strategy in advance, avoid frequent system start and stop, and extend equipment life.

[0031] In addition, the modular design and flexible duct layout enable it to adapt to different building types, and the installation cycle is 30% shorter than traditional systems; the wireless sensor network reduces wiring workload and reduces damage to building structures; precise post-installation debugging ensures the optimal match between the system and the actual scenario, avoiding increased energy consumption due to improper installation. It is easy to install and highly adaptable.

[0032] In addition, through the optimization of the three goals of "energy efficiency-comfort-health", the fresh air ratio, heat recovery core flow channel switching, heat pump module output, zoned air supply and terminal adjustment parameters are automatically adapted to form a closed-loop optimization; using "digital twin + knowledge graph" fusion analysis, it can not only identify system anomalies, but also achieve local self-healing by adjusting bypass valves, backup fans and other components; it supports users to set regional parameters through voice and APP, and can also generate personalized energy-saving suggestions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0034] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0035] In the attached figure:

[0036] Figure 1 It is a diagram of the overall system architecture and connection relationship of the present invention.

[0037] Figure 2 It is the internal structure and flow chart of the indoor host group of the present invention.

[0038] Figure 3 It is the intelligent control and coordinated regulation logic diagram of the present invention.

[0039] Figure 4 It is a structural diagram of the indoor host group of the present invention.

[0040] Figure 5 The present invention Figure 4 Schematic diagram of the rear side perspective structure.

[0041] Figure 6 It is a schematic diagram of the installation structure of the installation rod and the fixing bracket of the present invention.

[0042] Figure 7 It is a structural schematic diagram of the fixing frame of the present invention.

[0043] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the movable sleeve of the present invention.

[0044] Figure 9 The present invention Figure 8Schematic diagram of the enlarged structure at point A in the middle.

[0045] Reference Signs List

[0046] 1. Indoor host unit; 2. Partition terminal module; 3. Intelligent sensing unit; 4. Central collaborative control system; 101. Multi-stage fresh air deep processing unit; 1011. Primary purification section; 1012. Deep processing section; 1013. Fine filtration section; 5. Mounting rod; 501. Base; 502. Movable sleeve; 5021. Dial plate; 5022. Card plate; 6. Fixed bracket; 601. Rotating shaft; 6011. Ratchet; 6012. Pressure wheel; 6013. Fan; 602. Rotating plate. DETAILED DESCRIPTION

[0047] In order to make the purpose, scheme and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the common meanings in the art. The same reference numerals in the drawings represent the same components.

[0048] Example: Please refer to Figures 1 to 9 As shown:

[0049] The present invention provides an energy-saving fresh air air conditioner and an installation method thereof, comprising an outdoor unit, an indoor main unit 1, a partition terminal module 2, an intelligent sensing unit 3, a central collaborative control system 4, and a uniform air supply component; the outdoor unit and the indoor main unit 1 are connected via a refrigerant pipe with a flange and a joint, and the indoor main unit 1 is connected to the partition terminal module 2 via an air supply duct; the intelligent sensing unit 3 collects environmental parameters and performs local pre-processing, and uploads the data to the central collaborative control system 4;

[0050] The indoor host unit 1 serves as the core unit for fresh air processing and energy cascade recovery. The internal integrated components include: a multi-stage fresh air depth processing unit 101, a return air ratio intelligent adjustment unit and an adaptive air supply unit. The indoor host unit 1 is internally installed with a uniform air supply component; the partition terminal module 2 includes an air volume regulating valve, a temperature sensor and a humidity sensor, and dynamically adjusts the air volume and temperature and humidity of each area through an intelligent algorithm. The partition terminal module 2 includes a variable air volume terminal device, a terminal secondary heat exchanger and an airflow optimization component. The variable air volume terminal device has a built-in piezoelectric air valve and a laser wind speed sensor, and the air supply volume adjustment range is 40-550m 3 / h; the terminal secondary heat exchanger adopts a microchannel plate composite structure, and controls the refrigerant flow through an electronic expansion valve + PID temperature compensation algorithm. The secondary adjustment range is 15-31°C, and the "cooling / heating / bypass" mode can be switched independently; the airflow optimization component includes a rotatable spherical air outlet and a silencer static pressure box; the intelligent sensing unit 3 adopts the "ZigBee3.0+edge computing node" architecture, and the intelligent sensing unit 3 consists of a partitioned environmental sensor, a system status sensor, and an energy consumption-energy efficiency dual monitoring sensor; the central collaborative control system 4 adopts an industrial-grade edge computing gateway, supporting WiFi6, Bluetooth 5.2 and 5G / NB-IoT communications. The core of the central collaborative control system 4 adopts a federated learning-space-time coupling intelligent control algorithm, and the algorithm is distributedly trained through user-side data and public meteorological data; the uniform air supply component includes a mounting rod 5 and a fixing bracket 6.

[0051] Among them, the multi-stage fresh air deep processing unit 101 includes: a primary purification section 1011, which is installed at the rear side of the air inlet and adopts a gradient density composite filter. In addition to particulate matter, it can adsorb some VOCs and extend the life of the rear-end filter; a high-efficiency heat recovery core (not shown in the figure) is installed at the rear side of the primary purification section. The high-efficiency heat recovery core adopts a countercurrent-crosscurrent composite flow channel structure. The core material is graphene-modified aluminum foil, and a nano-scale honeycomb microstructure is formed on the surface; a deep processing section 1012, which is installed at the rear side of the fan coil and the condenser at the rear side of the high-efficiency heat recovery core. The deep processing section 1012 is provided with an integrated variable frequency heat pump module and a bipolar rotary dehumidification component. The heat pump module is coordinated with the electronic expansion valve through a four-way valve to achieve a wide temperature range of -5°C to 50°C. The rotary dehumidification component is filled with a composite adsorption material. The composite adsorption material is composed of silica gel, activated carbon and montmorillonite. The speed is passed Through servo motor adjustment and combined with zoned humidity gradient data, differentiated dehumidification is achieved. For example, high-humidity areas correspond to high-speed impellers. Fine filtration section 1013 is installed on the rear side of deep treatment section 1012. The fine filtration section adopts H13-level HEPA filter and UV-C photocatalytic module combination, which can effectively filter particulate matter while decomposing residual VOCs. The return air ratio intelligent adjustment unit is equipped with a magnetostrictive proportional control valve consisting of a fresh air valve, a return air valve, an exhaust valve and a bypass valve to form a four-way valve. The four-way valve linkage can realize the continuous adjustment of the fresh air ratio within the range of 8%-100%, and can dynamically switch the "fresh air-return air-exhaust air" coupling mode according to the indoor CO2 concentration and the outdoor air quality, solving the contradiction between the fresh air quality and energy consumption of the traditional three-valve adjustment, and achieving more energy-saving effect. The adaptive air supply unit adopts a mixed flow fan equipped with a rare earth permanent magnet synchronous variable frequency motor, and the air volume adjustment range is 280-3200m 3 / h, the wind pressure is automatically compensated through the "duct resistance-air volume feedback" double closed-loop control, and the distributed balance of the air supply pressure is achieved in combination with the real-time wind pressure data at the end of the partition.

[0052] Among them, the intelligent sensing unit 3 adopts the "ZigBee3.0+edge computing node" architecture, with a battery life of ≥3 years. The intelligent sensing unit 3 is composed of partitioned environmental sensors, system status sensors and energy consumption-energy efficiency dual monitoring sensors. Among them, the partitioned environmental sensors are equipped with VOC concentration monitoring, combined with temperature, humidity, CO2 concentration and personnel presence status. The system status sensor is equipped with a heat exchanger, frost sensor and fan vibration sensor to improve the accuracy of fault prediction. The energy consumption-energy efficiency dual monitoring sensor is equipped with a mass flow meter on the refrigerant pipeline connected to it, combined with the smart meter, to calculate the system COP in real time and feedback to the central collaborative control system 4.

[0053] Among them, the mounting rod 5 is installed on the rear side of the primary purification section 1011, and the primary purification section 1011 is installed on the rear side of the fan. A movable sleeve 502 is sleeved on the mounting rod 5, and bases 501 are welded on the upper and lower sides of the mounting rod 5. The base 501 is fixedly connected to the inner cavity of the indoor host unit 1 through a bolt assembly. A fixing frame 6 is fixedly connected between the bases 501. A dial plate 5021 is provided on the movable sleeve 502, and two annular grooves are opened on the movable sleeve 502. Two card plates 5022 are rotatably connected in each annular groove. The two card plates 502 2 is clamped with a rotating plate 602, which is connected to the fixed frame 6 through an axis of rotation. The fixed frame 6 is clamped with a rotating shaft 601, and the rotating shaft 601 is coaxially connected to a ratchet 6011, a pressure wheel 6012 and a fan 6013. A claw is installed on the side of the ratchet 6011, and the claw is connected to the fixed frame 6 through an axis. The pressure wheel 6012 is a cam with a notch. A buffer pad is fixedly bonded to one side of the notch. The two pressure wheels 6012 have the same direction of rotation but are not in the same plane in radial position. The notch of the pressure wheel 6012 is located next to the dial plate 5021. , a through hole is opened inside the rotating plate 602 and the through hole is penetrated by the movable sleeve 502. When the air conditioner is turned on, the fresh air is sent from the inlet through the fan into the inner cavity of the indoor main unit 1, and is blown backward after preliminary filtration by the primary purification section 1011, driving the fan 6013 to rotate. Since the claw limits the directional rotation of the ratchet 6011, the fan 6013 drives the coaxially connected pressure wheel 6012 and the ratchet 6011 to rotate. Every time the pressure wheel 6012 rotates one circle, the dial plate 5021 moves up and down once, and the buffer pad bonded to the notch of the pressure wheel 6012 The sound when hitting the dial plate 5021 can be reduced. The movable sleeve 502 moves back and forth up and down under the movement of the dial plate 5021, driving the card plate 5022 to move back and forth up and down. The card plate 5022 rotates and slides relatively inside the rotating plate 602. The card plate 5022 drives the rotating plate 602 to swing back and forth, so that the air filtered by the primary purification section 1011 can be evenly supplied up and down for heating or cooling, and the wind-receiving position of the fan coil or condenser is evenly distributed without the need for an external driving device, and the heating or cooling can be balanced, which has an energy-saving effect.

[0054] Among them, the partition terminal module 2 is divided into independent control areas according to the function of the indoor space. Each partition terminal module 2 contains an air volume control valve, a temperature sensor and a humidity sensor. The air volume and temperature and humidity of each area are dynamically adjusted through an intelligent algorithm to ensure that the environmental parameters of each area are independently and accurately controlled, thereby improving the overall comfort and energy efficiency. The partition terminal module 2 also includes a variable air volume terminal device, a terminal secondary heat exchanger and an airflow optimization component. The variable air volume terminal device has a built-in piezoelectric air valve and a laser wind speed sensor, and the air supply volume adjustment range is 40-550m 3 / h, the air supply direction can be dynamically adjusted according to the movement trajectory of personnel. The terminal secondary heat exchanger adopts a microchannel-plate composite structure, and the refrigerant flow is controlled by an electronic expansion valve + PID temperature compensation algorithm. The secondary adjustment range is 15-31°C, and the "cooling / heating / bypass" mode can be switched independently. The airflow optimization components include a rotatable spherical air outlet and a honeycomb silencer static pressure box. The honeycomb silencer static pressure box replaces traditional sound-absorbing cotton, and reduces noise through airflow rectification and Helmholtz resonance principle. The operating noise is ≤32dB(A).

[0055] The present invention discloses an installation method of an energy-saving fresh air air conditioner, comprising the following steps:

[0056] 1) Preliminary site survey and planning: Before installation, the building space dimensions, floor height, door and window locations, and structural load-bearing capacity must be measured; control areas must be divided according to functional use, and the installation locations of the partition terminal modules must be determined;

[0057] 2) Equipment selection and material preparation: Select the matching equipment model according to the survey results, prepare galvanized steel plates or environmentally friendly phenolic composite air ducts, air ducts with a thickness of ≥0.8mmd, refrigerant pipes, insulation materials, wires and brackets, sealants, cable ties and other auxiliary materials.

[0058] 3) Outdoor unit module installation: Choose a well-ventilated outdoor location away from bedroom windows to avoid direct sunlight; the equipment foundation is made of concrete or steel brackets with a horizontal error of ≤2mm / m; the outdoor unit is fixed to the foundation with expansion bolts, and shock-absorbing pads are installed to reduce vibration and noise; the refrigerant pipe is welded with nitrogen protection. After welding, the pressure test is carried out with the standard of 2.8MPa on the high-pressure side and 1.8MPa on the low-pressure side, and the pressure drop is ≤0.02MPa for 24 hours; the pipeline is as short and straight as possible, and the number of elbows used is reduced. The bending radius is ≥5 times the pipe diameter; the insulation layer is wrapped tightly, and the joints are sealed with tape to prevent condensation.

[0059] 4) Indoor host unit installation: Priority should be given to the ceiling or equipment room to ensure maintenance space; the host should be installed horizontally with an error of ≤1mm / m, and fixed by a hanger with an installation spacing of less than 1.5m, and a shock absorber should be installed between the hanger and the host; the host air supply and return air vents and the air duct are connected by flanges, and 3mm thick rubber pads are placed between the flanges to ensure sealing; the main air duct wind speed is controlled at 8-12m / s, and the branch air duct is ≤8m / s. Guide vanes are installed at the bends of the air duct to reduce wind resistance; the gap between the air duct and the ceiling is filled with fireproof rock wool, and fireproof sealing is done well; the fresh air inlet is located in a clean outdoor air place, ≥2m above the ground, and rainproof shutters and insect-proof nets are installed; the horizontal distance between the exhaust outlet and the fresh air inlet is ≥3m to avoid exhaust backflow; the pipeline slope is ≥0.5%, and a condensate discharge outlet is set at the lowest point.

[0060] 5) Installation of partition terminal module 2: The supply air outlet is installed at the upper part of the room, and the return air outlet is at the lower part. The distance between the supply and return air outlets is ≥1.5m to avoid short circuit; the air outlet and the air duct are softly connected with canvas or aluminum foil hose to reduce vibration transmission; the variable air volume terminal and the terminal heat exchanger are installed in the ceiling and fixed with angle steel brackets to ensure a firm connection with the air duct; air leakage detection is carried out after installation.

[0061] 6) Installation of intelligent sensor network: Zoned environmental sensors are installed in the center of the area, away from heat sources, air vents and direct sunlight; system status sensors are installed in designated locations according to the equipment manual; energy consumption monitoring sensors are connected in series in the equipment power supply circuit to ensure correct wiring; all sensors are wirelessly paired with the central controller, and the communication status is checked through the controller touch screen. For sensors with weak signals, the installation position can be adjusted or repeaters can be added.

[0062] 7) System debugging: Close all air vents, pressurize the air duct system to 500Pa, and the pressure drop within 30 minutes should be ≤50Pa, otherwise find the leak and seal it; start the system, test the operating status of the fan, compressor, valve and other equipment in turn, adjust the frequency range of the frequency conversion equipment to ensure smooth operation; calibrate the sensor data through professional instruments such as thermometers, hygrometers, and air volume meters to make the deviation between the displayed value and the actual value ≤1%; simulate different scenarios such as people entering, changes in outdoor temperature and humidity, and observe whether the system increases the air supply volume, changes the fresh air ratio, and other adjustments according to the preset strategy, and record the adjustment response time.

[0063] 8) Acceptance and delivery: After installation and commissioning, a continuous 8-hour operation test is carried out to monitor the temperature fluctuations, humidity fluctuations, CO2 concentration and system energy consumption deviations from the design values ​​in each area; the equipment manual, installation drawings, warranty card and operation training manual are handed over to the user to guide the user in using the central collaborative control system 4 and remote APP.

Claims

1. An energy-saving fresh air air conditioner and installation method, characterized in that: An energy-saving fresh air air conditioner comprises: an outdoor unit, an indoor main unit (1), a partition terminal module (2), an intelligent sensing unit (3), a central collaborative control system (4), and a uniform air supply component; the outdoor unit and the indoor main unit (1) are connected via a refrigerant pipe with a flange and a joint, and the indoor main unit (1) is connected to the partition terminal (2) via an air supply duct; the intelligent sensing unit (3) collects environmental parameters and performs local pre-processing, and uploads the data to the central collaborative control system (4); The components integrated inside the indoor host unit (1) include: a multi-stage fresh air depth processing unit (101), a return air ratio intelligent adjustment unit and an adaptive air supply unit, and a uniform air supply component is installed inside the indoor host unit (1); The partition terminal module (2) includes an air volume regulating valve, a temperature sensor and a humidity sensor, and dynamically controls the air volume and temperature and humidity of each area through an intelligent algorithm. The partition terminal module (2) includes a variable air volume terminal device, a terminal secondary heat exchanger and an air flow optimization component, wherein the variable air volume terminal device has a built-in piezoelectric air valve and a laser wind speed sensor, and the air supply volume adjustment range is 40-550m 3 / h. The terminal secondary heat exchanger adopts a microchannel plate composite structure, and the refrigerant flow is controlled by an electronic expansion valve + PID temperature compensation algorithm. The secondary adjustment range is 15-31°C, and the "cooling / heating / bypass" mode can be switched independently. The airflow optimization component includes a rotatable spherical air outlet and a silencer static pressure box. The intelligent sensing unit (3) adopts the "ZigBee3.0+edge computing node" architecture, and the intelligent sensing unit (3) is composed of a partitioned environment sensor, a system status sensor, and an energy consumption-energy efficiency dual monitoring sensor; The central collaborative control system (4) adopts an industrial-grade edge computing gateway, supports WiFi6, Bluetooth 5.2 and 5G / NB-IoT communications, and the core of the central collaborative control system (4) adopts a federated learning-time-space coupling intelligent control algorithm, which uses distributed training of user-side data and public meteorological data; The uniform air supply assembly comprises a mounting rod (5) and a fixing frame (6); the mounting rod (5) is mounted on the rear side of the primary purification section (1011); the primary purification section (1011) is mounted on the rear side of the fan; a movable sleeve (502) is sleeved on the mounting rod (5); bases (501) are welded on the upper and lower sides of the mounting rod (5); the bases (501) are fixedly connected to the inner cavity of the indoor main unit (1) through a bolt assembly; the fixing frame (6) is fixedly connected between the bases (501); a dial plate (5021) is provided on the movable sleeve (502); and a Two annular grooves are provided, and two clamping plates (5022) are rotatably clamped in each annular groove. A rotating plate (602) is clamped between the two clamping plates (5022). The rotating plate (602) is rotatably connected to the fixed frame (6) via an axis. A rotating shaft (601) is clamped on the fixed frame (6). A ratchet (6011), a pressure wheel (6012) and a fan (6013) are coaxially connected to the rotating shaft (601). A clamping claw is installed on the side of the ratchet (6011). The clamping claw is connected to the fixed frame (6) via an axis. A through hole is opened inside the rotating plate (602), and the through hole is penetrated by the movable sleeve (502).

2. An energy-saving fresh air air conditioner according to claim 1, characterized in that: The outdoor unit adopts a wide-band variable-frequency compressor unit, equipped with a three-dimensional turbulent heat exchanger and a magnetic levitation variable-frequency fan, and adopts a dynamic energy efficiency ratio closed-loop adjustment mechanism: the compressor operating frequency is set to 8-130Hz and can be continuously adjusted. By real-time monitoring of the pressure enthalpy changes and ambient thermal resistance of the refrigerant cycle, combined with the load prediction value output by the edge computing node, the frequency adjustment step is automatically corrected. The outdoor unit also integrates a multi-dimensional environmental perception unit to monitor outdoor temperature, humidity, PM2.5 and TSP concentrations in real time.

3. The energy-saving fresh air air conditioner according to claim 1, characterized in that: The multi-stage fresh air deep processing unit (101) comprises: The primary purification section (1011) is installed at the rear side of the air inlet and adopts a gradient density composite filter; A heat recovery core is installed at the rear side of the primary purification section (1011), the heat recovery core adopts a countercurrent-crosscurrent composite flow channel structure, and the core material is graphene-modified aluminum foil; The deep processing section (1012) is installed at the rear side of the fan coil and the condenser tube at the rear side of the high-efficiency heat recovery core. The deep processing section (1012) is provided with an integrated variable frequency heat pump module and a bipolar rotary dehumidification component. The heat pump module is coordinated and adjusted by a four-way valve and an electronic expansion valve. The rotary dehumidification component is filled with a composite adsorption material. The composite adsorption material is composed of silica gel, activated carbon and montmorillonite. The fine filtration section (1013) is installed at the rear side of the deep treatment section (1012). The fine filtration section (1013) adopts a combination of an H13-level HEPA filter and a UV-C photocatalytic module.

4. An energy-saving fresh air air conditioner as claimed in claim 3, characterized in that: The return air ratio intelligent adjustment unit is equipped with a fresh air valve, a return air valve, an exhaust valve and a bypass valve composed of a magnetostrictive proportional control valve to form a four-way valve. The four-way valve is linked to dynamically switch the "fresh air-return air-exhaust air" coupling mode according to the indoor CO2 concentration and the outdoor air quality.

5. The energy-saving fresh air air conditioner according to claim 3, characterized in that: The self-adaptive air supply unit adopts mixed flow fan and is equipped with rare earth permanent magnet synchronous variable frequency motor. The air volume adjustment range is 280-3200m 3 / h, the wind pressure is automatically compensated through the "duct resistance-air volume feedback" double closed-loop control.

6. The energy-saving fresh air air conditioner according to claim 1, characterized in that: The partitioned environmental sensor is provided with VOC concentration monitoring, combined with temperature, humidity, CO2 concentration and personnel presence status, the system status sensor is provided with a heat exchanger, a frost sensor and a fan vibration sensor, and the energy consumption-energy efficiency dual monitoring sensor is provided with a flow meter on the refrigerant pipeline connected to it, combined with the smart meter to calculate the system COP in real time and feed it back to the central collaborative control system (4).

7. The energy-saving fresh air air conditioner according to claim 1, characterized in that: The pressure wheel (6012) is a cam with a notch, and a buffer pad is fixedly bonded to one side of the notch. The two pressure wheels (6012) have the same rotation direction but are not located in the same radial plane. The notch of the pressure wheel (6012) is located beside the dial plate (5021).

8. The method for installing an energy-saving fresh air air conditioner according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) Preliminary site survey and planning: Before installation, measure the building space dimensions, floor height, door and window locations, and structural load-bearing capacity, divide the control area according to the use function, and determine the installation location of the partition terminal module (2); 2) Equipment selection and material preparation: Select the matching equipment model according to the survey results, prepare auxiliary materials such as air ducts, refrigerant pipes, insulation materials, wires and brackets, and prepare the uniform air supply components; 3) Outdoor unit module installation: Choose a well-ventilated outdoor location away from bedroom windows to avoid direct sunlight. Use concrete or steel support for the equipment foundation. Secure the outdoor unit to the foundation with expansion bolts and install shock-absorbing pads. Use nitrogen shielded welding for refrigerant pipes and perform a pressure test after welding. Connect pipes in short straight lines to reduce elbows, with a bend radius ≥ 5 times the pipe diameter. Ensure a tight insulation layer and seal joints with tape. 4) Installation of indoor host unit (1): Select the ceiling or equipment room to ensure maintenance space; the host is installed horizontally with an error of ≤1mm / m, fixed by a hanger, and a shock absorber is installed between the hanger and the host; the air supply and return air outlet of the host is connected to the air duct by a flange, and a 3mm thick rubber pad is placed between the flanges; the wind speed of the main air duct is controlled at 8-12m / s, and the branch air duct is ≤8m / s, and a guide plate is set at the bend of the air duct; the gap between the air duct and the ceiling is filled with fireproof rock wool; the fresh air inlet is located in a clean outdoor air place, ≥2m above the ground, and rainproof shutters and insect-proof nets are installed; the horizontal distance between the exhaust outlet and the fresh air inlet is ≥3m to avoid exhaust backflow; the pipe slope is ≥0.5%, and a condensate discharge port is set at the lowest point. The base (501) is installed in the indoor unit (1) using a bolt assembly, the fixing frame (6) is installed between the bases (501), and the fan (6013) is located directly behind the primary purification section (1011); 5) Installation of partition terminal modules: The air supply outlet is installed at the top of the room, and the return air outlet is at the bottom. The distance between the air supply and return air outlets should be ≥1.5m to avoid short circuits. The air outlet and the air duct should be connected with a flexible connection. The variable air volume terminal and the terminal heat exchanger should be installed in the ceiling and fixed with angle steel brackets. After installation, conduct air leakage detection. 6) Intelligent sensor network installation: Zoned environmental sensors are installed in the center of the area, away from heat sources, air vents, and direct sunlight; system status sensors are installed in designated locations according to the equipment manual; energy consumption monitoring sensors are connected in series in the equipment power supply circuit; all sensors are wirelessly paired with the central controller, and the communication status is checked through the controller touch screen. Sensors with weak signals can be relocated or repeaters can be added; 7) System debugging: Close all air vents, pressurize the air duct system to 500Pa, and the pressure drop within 30 minutes is ≤50Pa; start the system, test the operating status of each device in turn, and adjust the frequency range of the frequency conversion equipment; calibrate the sensor data through professional instruments so that the deviation between the displayed value and the actual value is ≤1%; simulate different scenarios, observe whether the system is adjusted according to the preset strategy, and record the adjustment response time. 8) Acceptance and delivery: After installation and commissioning, conduct a continuous 8-hour operation test to monitor temperature fluctuations, humidity fluctuations, CO2 concentration and system energy consumption in each area; hand over the equipment manual, installation drawings, warranty card and operation training manual to the user, and guide the user to use the central collaborative control system (4) and remote APP.

Images