Energy-saving fresh air conditioner and installation method

Abstract

The application 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 terminal 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, a flange and a joint.The indoor main unit is communicated with the partition terminal module through an air supply pipeline.The intelligent sensing unit collects environmental parameters and local preprocessing, and uploads data to the central cooperative control system.The application can accurately distribute energy according to the actual load of each area, and the energy saving rate of the traditional single-area control air conditioner is 30%-40%.The high-efficiency heat recovery core in the multi-stage fresh air treatment unit greatly reduces the energy consumption of fresh air treatment.The uniform air supply assembly is arranged to uniformly supply the preliminarily purified fresh air, so that the fan coil or the condenser pipe uniformly receives the air, thereby saving energy and reducing consumption, and solving the problems of high energy consumption and uneven air supply of the fresh air conditioner.

Description

TECHNICAL FIELD

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

[0002] As an equipment with air conditioning and fresh air replacement functions, the fresh air conditioner is widely used in various buildings, but there are still some obvious problems in the operation process of the existing fresh air conditioner, which leads to low use rate, mainly reflected in the following aspects: the fresh air treatment mode of the traditional fresh air conditioner is relatively fixed, usually using a total heat exchanger for simple energy recovery, but under extreme weather conditions, the temperature difference and humidity difference between fresh air and return air are too large, and the total heat exchange efficiency is greatly reduced, at this time the air conditioning system needs to consume a large amount of energy to deeply treat the fresh air; at the same time, the existing equipment lacks precision in responding to indoor load, most fresh air conditioners use single-area whole control mode, ignoring the load unevenness problem formed by personnel distribution, equipment heat dissipation, sunlight difference and other factors in the same space.

[0003] In terms of installation, the installation process of the traditional fresh air conditioner is relatively cumbersome, and the adaptability to the installation environment is poor, the matching degree of duct layout, equipment positioning and building structure is insufficient, which easily leads to excessive wind resistance, high air leakage rate, further increasing system energy consumption, at the same time, the air supply is not uniform, which easily increases the energy consumption of the fan coil and condenser pipe after a period of use. SUMMARY

[0004] The present application aims to overcome the defects of high energy consumption, insufficient control precision, complicated installation and uneven air supply of the existing fresh air conditioner, and provides an energy-saving fresh air conditioner and an installation method, which realizes energy consumption reduction while ensuring indoor air quality and comfort through dynamic zoning energy management, multi-stage fresh air treatment and intelligent control strategy; the installation method can adapt to different building scenes, reduce installation loss, uniformly supply air and save energy and protect the environment.

[0005] The application provides an energy-saving fresh air conditioner and an installation method, which specifically comprises: an outdoor unit, an indoor main unit, a partition end module, an intelligent sensing unit, a central collaborative control system and a uniform air supply assembly; the outdoor unit is connected with the indoor main unit through a refrigerant pipe flange and a joint, and the indoor main unit is communicated with the partition end module through an air supply pipeline; the intelligent sensing unit collects environmental parameters and local preprocessing, and uploads data to the central collaborative control system; the outdoor unit adopts a wide-frequency variable-frequency compressor unit, is equipped with a three-dimensional disturbance heat exchanger and a magnetic suspension variable-frequency fan, and adopts a dynamic energy efficiency ratio (EER) closed-loop regulation mechanism: the working frequency of the compressor is continuously adjustable at 8-130 Hz, the pressure-enthalpy change and the environmental thermal resistance of the refrigerant circulation are monitored in real time, the load prediction value output by the edge computing node is combined, the frequency regulation step is automatically corrected, compared with the traditional simple dependence on the condensation temperature, the energy consumption is lower, and the outdoor unit is integrated with a multi-dimensional environmental sensing unit, can monitor the outdoor temperature range of-32 DEG C to 52 DEG C, the humidity range of 8% to 92% RH, PM2.5 and TSP concentration, data is uploaded through a mixed transmission protocol of LoRaWAN and power line carrier, and the signal blind area problem of single wireless transmission is solved.

[0006] The indoor host group is the core unit of fresh air treatment and energy cascade recovery. The integrated components inside include: multi-stage fresh air deep treatment unit, return air ratio intelligent adjustment unit and self-adaptive air supply unit. The multi-stage fresh air deep treatment unit includes: the primary purification section is installed behind the air inlet, and a gradient density composite filter screen is used. The composite filter screen is composed of G3+ activated carbon composite layer. It can adsorb part of VOCs in addition to particulate matter, prolonging the service life of the rear-end filter screen. The high-efficiency heat recovery core (not shown in the figure) is installed behind the primary purification section. The high-efficiency heat recovery core adopts a counter-flow-cross-flow composite flow channel structure. The core material is graphene modified aluminum foil, and the surface forms a nanoscale honeycomb microstructure. 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 behind the high-efficiency heat recovery core and behind the fan coil and condensing pipe. The deep treatment section is provided with an integrated variable frequency heat pump module and a bipolar rotary dehumidification component. The heat pump module is adjusted by a four-way valve and an electronic expansion valve to achieve a wide temperature range of -5℃ to 50℃. The rotary dehumidification component is filled with composite adsorbent material composed of silica gel, activated carbon and montmorillonite. The speed is adjusted by a servo motor, and differential dehumidification is realized by combining zoned humidity gradient data, such as high-speed rotation of the rotary dehumidification component in high-humidity areas. The fine filtration section is installed behind the deep treatment section. The fine filtration section is composed of H13 HEPA filter screen and UV-C photocatalytic module, which can filter particles and decompose residual VOCs. The return air ratio intelligent adjustment unit is composed of a four-way valve composed of a new air valve, a return air valve, an exhaust air valve and a bypass valve. The four-way valve is linked to continuously adjust the new air ratio in the range of 8%-100%. The "fresh air-return air-exhaust air" coupling mode can be dynamically switched according to the indoor CO2 concentration and outdoor air quality, solving the contradiction between new air quality and energy consumption of traditional three-valve adjustment, and having better energy-saving effect. The self-adaptive air supply unit adopts a mixed flow fan equipped with a rare earth permanent magnet synchronous variable frequency motor. The air volume adjustment range is 280-3200m 3 / h, and the wind pressure is automatically compensated by "wind pipe resistance-air volume feedback" double closed loop control. The distributed balance of air supply pressure is realized by combining real-time wind pressure data of zoned terminal.

[0007] The zoned terminal module independently controls the area according to the function of indoor space. Each zoned terminal module includes an air volume adjustment valve, a temperature sensor and a humidity sensor. The air volume and temperature and humidity of each area are dynamically adjusted by intelligent algorithm to ensure independent and accurate control of the environmental parameters of each area, improve the overall comfort and energy efficiency. The zoned terminal module includes a variable air volume terminal device, a terminal secondary heat exchanger and an air flow optimization component. The variable air volume terminal device is equipped with a piezoelectric air valve and a laser air speed sensor. The air supply volume adjustment range is 40-550m 3 / h, the air supply direction can be dynamically adjusted according to the personnel moving track; the end secondary heat exchanger adopts a micro-channel-plate composite structure, the refrigerant flow is controlled through an electronic expansion valve + PID temperature compensation algorithm, the secondary regulation range is 15-31℃, and the "cooling / heating / bypass" mode can be independently switched; the airflow optimization assembly includes a rotatable spherical air outlet and a honeycomb type noise reduction static pressure tank, the honeycomb type noise reduction static pressure tank replaces the traditional sound-absorbing cotton, and noise reduction is achieved through airflow rectification and Helmholtz resonance principle, and the running noise is ≤32dB(A).

[0008] The intelligent sensing unit adopts a "ZigBee3.0 + edge computing node" architecture, the battery endurance is ≥3 years, the intelligent sensing unit is composed of a partitioned environment sensor, a system state sensor and an energy consumption-energy efficiency double monitoring sensor, wherein the partitioned environment sensor is provided with VOC concentration monitoring, combined with temperature, humidity, CO2 concentration and personnel presence state, the system state sensor is provided with a heat exchanger, a frost sensor and a fan vibration sensor, the fault prediction accuracy is improved, the energy consumption-energy efficiency double monitoring sensor is provided with a mass flow meter on the refrigerant pipeline connected thereto, combined with a smart meter, the system COP is calculated in real time and fed back 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 communication, realizes local autonomous control and cloud collaborative management, the core of the central collaborative control system is a federal learning-temporal and spatial coupling intelligent control algorithm, the algorithm trains user side data and public meteorological data through distribution.

[0010] Further, the mounting rod is installed at the rear side of the primary purification section, the primary purification section is installed at the rear side of the fan, a moving sleeve is sleeved on the mounting rod, bases are welded on the upper and lower sides of the mounting rod, the bases are fixedly connected into the inner cavity of the indoor main unit through bolt assemblies, a fixing frame is fixedly connected between the bases, a push plate is arranged on the moving sleeve, two annular grooves are formed in the moving sleeve, two clamping plates are rotatably clamped in each annular groove, a rotating plate is clamped between the two clamping plates, the rotating plate is rotatably connected to the fixing frame through a shaft, a rotating shaft is clamped on the fixing frame, a ratchet wheel, a pressing wheel and a fan are coaxially connected to the rotating shaft, a clamping jaw is installed beside the ratchet wheel and connected to the fixing frame through a shaft, the pressing wheel is a cam with a notch, a buffer pad is fixedly bonded to one side of the notch, the rotating directions of the two pressing wheels are the same but the radial positions are not in the same plane, the notch of the pressing wheel is beside the push plate, a through hole is formed in the rotating plate and the through hole is penetrated by the moving sleeve, when the air conditioner is turned on, fresh air is sent into the inner cavity of the indoor main unit from the inlet, is preliminarily filtered through the primary purification section and is blown backward, the fan is blown to rotate, because the clamping jaw limits the directional rotation of the ratchet wheel, the fan is blown to drive the coaxially connected pressing wheel and ratchet wheel to rotate, the pressing wheel is driven to rotate one round, the push plate is driven to move up and down once, the buffer pad bonded to the notch of the pressing wheel can reduce the sound when the push plate is hit, the moving sleeve moves up and down reciprocatingly under the movement of the push plate, the clamping plates are driven to move up and down reciprocatingly, the clamping plates are rotated and relatively slide in the rotating plate, the clamping plates drive the rotating plate to swing reciprocatingly, so that the air filtered through the primary purification section can be uniformly supplied up and down, heating or cooling is performed, the air fan coil or condensing pipe is uniformly positioned, and the heating or cooling is balanced, so that the energy saving effect is achieved.

[0011] The application discloses a fresh air control method of an energy-saving fresh air air conditioner.

[0012] 1) starting stage: after the system is powered on, the central cooperative control system first performs self-checking, and issues an alarm if there is a fault; when there is no fault, initial states of outdoor environment temperature, humidity, PM2.5 parameters and temperatures, humidities and CO2 concentrations of each partition are collected, initial operation strategies are generated in combination with target parameters preset by a user;

[0013] 2) Fresh air treatment process: After removing particulate matter in the primary purification section, outdoor fresh air enters the fresh air side of the heat recovery core and exchanges heat with the indoor return air on the exhaust side, preliminarily reducing the fresh air treatment energy consumption; the fan is driven by wind power to rotate, coaxially driving the pressure roller to rotate, moving the sleeve up and down reciprocally, and the turning plate is driven by the clamping plate to rotate, realizing uniform air supply; according to the difference between the pre-processed fresh air parameters and the target parameters, the central collaborative control system decides whether to start the deep processing section: if the temperature difference is > 3℃, start the variable frequency heat pump module, adjust the compressor frequency to change the refrigeration / heating capacity, and adjust the fresh air temperature to close to the target value; if the humidity difference is > 5% RH, start the rotary dehumidification assembly or humidification device to adjust the fresh air humidity; the deep-processed fresh air passes through the HEPA filter screen and is mixed with the indoor return air introduced through the return air valve according to the optimized proportion, and the mixed air is sent into the air pipe system by the air supply fan;

[0014] 3) Zoning air supply and adjustment: mixed air is transported to each zoning end module through the main air pipe, and the central collaborative control system controls each module independently according to the zoning environment sensor data: for the area deviating from the target value, adjust the opening degree of the variable air volume end air valve, and at the same time, adjust the refrigerant flow through the electronic expansion valve of the end heat exchanger to realize secondary temperature compensation; for the unoccupied area, automatically reduce the air supply to the maintenance value, and close the end secondary adjustment function 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 > 5kJ / kg, the heat recovery core is full load; when the enthalpy difference is < 2kJ / kg, the bypass valve can be switched to close the heat recovery core to avoid wind resistance loss and save energy;

[0016] 5) Dynamic control of fresh air ratio: when outdoor PM2.5 is ≤ 50μg / m 3 and the temperature and humidity are close to the target value, the fresh air ratio can be increased to 80%-100%, reducing the amount of return air mixing and reducing mechanical treatment 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 treatment load; according to the predicted load change, the system gradually increases the equipment output 30 minutes in advance to avoid energy waste during peak period; at night when there is no one, automatically switch to energy saving mode;

[0017] 6) Shutdown phase: when the user manually shuts down or reaches the preset shutdown time, the system executes the shutdown process: gradually reduce the compressor frequency, close the fresh air valve and return air valve, stop the air supply fan, and finally turn off the power supply, at the same time, the central collaborative control system records the running data of this time, and updates the load prediction model.

[0018] The installation method of the energy-saving fresh air conditioner disclosed by the application comprises the following steps:

[0019] 1) On-site survey and planning: Measure the building space size, height, door and window position and structural load before installation; divide the control area according to the use function, and determine the installation position of the partition end module;

[0020] 2) Equipment selection and material preparation: Select the matching equipment model according to the survey results, prepare galvanized steel plate or environmentally friendly phenolic composite air pipe, air pipe, refrigerant pipe, insulation material, wire and support, sealant, and auxiliary materials such as tape.

[0021] 3) Outdoor module installation: Choose a well-ventilated outdoor location away from bedroom windows to avoid direct sunlight; the equipment foundation uses concrete pouring or steel support, with a horizontal error of ≤2mm / m; the outdoor unit is fixed on the foundation through expansion bolts, and a shock pad is added to reduce vibration noise; The refrigerant pipe is welded with nitrogen protection, and after welding, it is subjected to pressure test with a standard of 2.8MPa on the high-pressure side, 1.8MPa on the low-pressure side, and pressure holding for 24 hours Pressure drop ≤0.02MPa; The pipeline is as short and straight as possible, reducing the number of bends, and the bend radius is ≥5 times the pipe diameter; The insulation layer is tightly wrapped, the joints are sealed with tape, and condensation is avoided.

[0022] 4) Indoor main unit installation: Preferably choose inside the ceiling or equipment room to ensure maintenance space; the main unit is installed horizontally with an error of ≤1mm / m, fixed by a hanging bracket with a spacing of less than 1.5m, and a shock absorber is added between the hanging bracket and the main unit; The main air supply and return air outlet and the air pipe are connected by flanges, and 3mm thick rubber pads are placed between the flanges to ensure sealing; The main air pipe wind speed is controlled at 8-12m / s, and the branch air pipe is ≤8m / s; The air pipe is provided with a guide vane at the turning part to reduce wind resistance; The gap between the air pipe and the ceiling is filled with fireproof rock wool, and fireproof plugging is done well; The fresh air inlet is located in a clean outdoor air area, ≥2m above ground, and is equipped with a rainproof shutter and an insect screen; The horizontal distance between the exhaust outlet and the fresh air inlet is ≥3m to avoid backflow; The pipeline slope is ≥0.5%, the lowest point is provided with a condensate water discharge port, the base is installed into the indoor unit by using a bolt assembly, the fixing frame is installed between the bases, and the fan is located directly behind the primary purification section.

[0023] 5) Partition end module installation: The air supply outlet is installed on the upper part of the room, and the air return outlet is on the lower part, with a distance of ≥1.5m between the air supply and return outlets to avoid short circuit; The air outlet and air pipe are connected by a soft connection of canvas or aluminum foil hose to reduce vibration transmission; The variable air volume end and the end heat exchanger are installed in the ceiling through an angle steel support to ensure firm connection with the air pipe; After installation, air leakage detection is performed.

[0024] 6) Intelligent sensor network installation: partition environment sensors are installed at the central location of the area, away from heat sources, air outlets and direct sunlight; system state sensors are installed at the specified location according to the equipment instruction manual; energy consumption monitoring sensors are connected in series in the device power supply circuit to ensure correct wiring; all sensors are paired with the central controller wirelessly, and the communication state is checked through the controller touch screen. Adjust the installation position or add repeaters to the sensors with weak signals.

[0025] 7) System debugging: close all air outlets, pressurize the air duct system to 500 Pa, and the pressure drop within 30 minutes is ≤50 Pa, otherwise find the leakage point and seal; start the system, test the running state of the fan, compressor, valve and other equipment in turn, adjust the frequency range of the frequency conversion equipment, and ensure smooth operation; calibrate sensor data through professional instruments such as thermohygrometers and air volume meters to make the display value deviation from the actual value ≤1%; simulate different scenarios such as personnel entering, outdoor temperature and humidity changes, etc. Observe whether the system adjusts the air supply volume and changes the fresh air ratio according to the preset strategy, and record the adjustment response time.

[0026] 8) Acceptance and delivery: After installation and debugging are completed, perform continuous 8-hour operation test, monitor the temperature fluctuation, humidity fluctuation, CO2 concentration, and system energy consumption in each area, and compare them with the design values; hand over the equipment instruction manual, installation drawings, warranty card and operation training manual to the user, and guide the user to use the central collaborative control system and remote APP.

[0027] Advantages

[0028] The present application 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, and the uniform air supply assembly can uniformly send the preliminarily purified fresh air, so that the fan coil or condenser pipe is uniformly winded, saving energy and reducing consumption.

[0029] In addition, the secondary regulation function of the partition end module ensures that the temperature and humidity of each area are uniform, solving the problem of temperature difference in traditional air conditioning; the multi-stage filtration system can effectively remove PM2.5, bacteria and other pollutants, and dynamically adjust the fresh air volume combined with CO2 concentration monitoring, improving comfort and air quality.

[0030] In addition, combined with the correlation of regional functions and weather prediction, the future 1-48 hour cold / heat load and fresh air demand prediction is realized, and the control algorithm based on deep learning can autonomously learn user habits and environmental change rules, adjust the operation strategy in advance, avoid frequent start and stop of the system, and prolong the service life of the equipment.

[0031] In addition, the modular design and flexible duct layout can adapt to different building types, shorten the installation period by 30% compared with traditional systems, reduce wiring workload through a wireless sensor network, and reduce damage to the building structure; accurate debugging after installation ensures that the system is optimally matched with the actual scene, avoids increased energy consumption due to improper installation, and is convenient to install and highly adaptable.

[0032] In addition, through the optimization of the three targets of energy efficiency, comfort, and health, the fresh air ratio, heat recovery core flow switching, heat pump module output, partitioned air supply, and end adjustment parameters are automatically adapted to form a closed-loop optimization; the fusion analysis of "digital twin + knowledge graph" not only identifies system abnormalities, but also realizes local self-healing through adjusting components such as bypass valves and backup fans; users can set regional parameters through voice and APP, and personalized energy-saving suggestions can also be generated. BRIEF DESCRIPTION OF DRAWINGS

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

[0034] The drawings described in the following description only relate to some embodiments of the present application, and are not a limitation of the present application.

[0035] In the drawings:

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

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

[0038] Figure 3 is the intelligent control and collaborative adjustment logic diagram of the present application.

[0039] Figure 4 is the structure schematic diagram of the indoor host group of the present application.

[0040] Figure 5 is the rear side view structure schematic diagram of the present application. Figure 4

[0041] Figure 6 is the installation structure schematic diagram of the mounting rod and fixing frame of the present application.

[0042] Figure 7 is the structure schematic diagram of the fixing frame of the present application.

[0043] Figure 8 is the local cross-sectional structure schematic diagram of the moving sleeve of the present application.

[0044] Figure 9 is the rear side view structure schematic diagram of the present application. Figure 8 ​Enlarged structural schematic view at A.

[0045] List of reference signs

[0046] 1, indoor main unit; 2, partition end 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, moving sleeve; 5021, push plate; 5022, clamping plate; 6, fixing frame; 601, rotating shaft; 6011, ratchet wheel; 6012, pressure roller; 6013, fan; 602, rotating plate. DETAILED DESCRIPTION

[0047] In order to make the purpose, scheme and advantages of the technical solutions of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the specific embodiments of the present application. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference signs in the drawings represent the same components.

[0048] Embodiment: Please refer to Figures 1 to 9 as shown:

[0049] The present application provides an energy-saving fresh air conditioner and installation method, comprising an outdoor unit, an indoor main unit 1, a partition end module 2, an intelligent sensing unit 3 and a central collaborative control system 4 and a uniform air supply assembly; the outdoor unit is connected with the indoor main unit 1 through a refrigerant pipe flange and a joint, and the indoor main unit 1 is communicated with the partition end module 2 through an air supply pipeline; the intelligent sensing unit 3 collects environmental parameters and local preprocessing, and uploads data to the central collaborative control system 4;

[0050] The indoor main unit 1 is the core unit of fresh air treatment and energy cascade recovery, and the integrated components inside include: a multi-stage fresh air deep processing unit 101, an air return ratio intelligent adjustment unit and a self-adaptive air supply unit, and the indoor main unit 1 is internally installed with a uniform air supply assembly; the partition end module 2 contains 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 intelligent algorithm, and the partition end module 2 includes a variable air volume end device, an end secondary heat exchanger and an air flow optimization component, wherein the variable air volume end device is internally provided with a piezoelectric air valve and a laser air speed sensor, and the air supply volume adjustment range is 40-550m 3The terminal secondary heat exchanger adopts a micro-channel plate composite structure, the refrigerant flow is controlled by an electronic expansion valve + PID temperature compensation algorithm, the secondary regulation range is 15-31℃, and the "cooling / heating / bypass" mode can be independently switched; the airflow optimization assembly includes a rotatable spherical air outlet and a sound-attenuating static pressure tank; the intelligent sensing unit 3 adopts a "ZigBee3.0+edge computing node" architecture, and is composed of a partitioned environment sensor, a system state sensor and an energy consumption-energy efficiency double monitoring sensor; the central collaborative control system 4 adopts an industrial-grade edge computing gateway, supports WiFi6, Bluetooth5.2 and 5G / NB-IoT communication, and the core of the central collaborative control system 4 adopts a federated learning-temporal and spatial coupling intelligent control algorithm, which trains user-side data and public weather data in a distributed manner; the uniform air supply assembly includes a mounting rod 5 and a fixing frame 6.

[0051] The multi-stage fresh air deep treatment unit 101 includes: a primary purification section 1011 installed at the rear side of the air inlet, which adopts a gradient density composite filter screen that can adsorb part of VOCs in addition to particulate matter, thereby prolonging the service life of the rear-end filter screen; a high-efficiency heat recovery core (not shown in the figure) installed at the rear side of the primary purification section, which adopts a counter-flow-cross-flow composite flow channel structure, and the core material is graphene modified aluminum foil with a nanoscale honeycomb microstructure on the surface; a deep treatment section 1012 installed at the rear side of the high-efficiency heat recovery core and the rear side of the fan coil and condensing pipe, which is provided with an integrated variable frequency heat pump module and a bipolar rotary dehumidification assembly, the heat pump module is cooperatively adjusted by a four-way valve and an electronic expansion valve to realize a wide temperature range of-5℃ to 50℃, and the rotary dehumidification assembly is filled with composite adsorption material composed of silica gel, activated carbon and montmorillonite, and the rotation speed is adjusted by a servo motor, and differential dehumidification is realized in combination with partitioned humidity gradient data, for example, high humidity areas correspond to high rotation speed of the rotary dehumidification assembly; a fine filtration section 1013 installed at the rear side of the deep treatment section 1012, which combines H13 grade HEPA filter screen and UV-C photocatalytic module to filter particulate matter and decompose residual VOCs; the return air ratio intelligent adjustment unit is provided with a four-way valve composed of a magnetostrictive proportional regulating valve, a return air valve, an exhaust air valve and a bypass valve, the four-way valve is linked to realize continuous adjustment of the fresh air ratio in the range of 8%-100%, and can dynamically switch the "fresh air-return air-exhaust air" coupling mode according to indoor CO2 concentration and outdoor air quality, thereby solving the contradiction between fresh air quality and energy consumption of traditional three-valve adjustment and achieving better energy saving effect; the self-adaptive air supply unit adopts a mixed flow fan equipped with a rare earth permanent magnet synchronous variable frequency motor, the air volume adjustment range is 280-3200m 3 / h, the wind pressure is automatically compensated by "air pipe resistance-air volume feedback" double closed loop control, and distributed balancing of air supply pressure is realized in combination with real-time wind pressure data of the partitioned terminal.

[0052] The intelligent sensing unit 3 adopts a "ZigBee3.0+edge computing node" architecture, and the battery endurance is greater than or equal to 3 years. The intelligent sensing unit 3 is composed of a partitioned environment sensor, a system state sensor, and an energy consumption-energy efficiency double monitoring sensor. The partitioned environment sensor is provided with VOC concentration monitoring, combined with temperature, humidity, CO2 concentration, and personnel presence state. The system state sensor is provided with a heat exchanger, a frost sensor, and a fan vibration sensor, which improves the fault prediction accuracy. The energy consumption-energy efficiency double monitoring sensor is provided with a mass flow meter on the refrigerant pipeline connected thereto, combined with a smart meter, to calculate the system COP in real time and feed back to the central collaborative control system 4.

[0053] The mounting rod 5 is installed at the rear side of the primary purification section 1011, the primary purification section 1011 is installed at the rear side of the fan, the moving sleeve 502 is sleeved on the mounting rod 5, the upper and lower sides of the mounting rod 5 are welded with the bases 501, the bases 501 are fixedly connected to the inner cavity of the indoor main unit 1 through bolt assemblies, the fixed frames 6 are fixedly connected between the bases 501, the moving sleeve 502 is provided with the push plate 5021, two annular grooves are formed in the moving sleeve 502, two clamping plates 5022 are rotatably clamped in each annular groove, the rotating plate 602 is clamped between the two clamping plates 5022, the rotating plate 602 is rotatably connected to the fixed frame 6 through a shaft, the rotating shaft 601 is clamped on the fixed frame 6, the ratchet wheel 6011, the pressing wheel 6012 and the fan 6013 are coaxially connected to the rotating shaft 601, the pawl is installed beside the ratchet wheel 6011 and connected to the fixed frame 6 through a shaft, the pressing wheel 6012 is a cam provided with a notch, the buffer pad is fixedly bonded to one side of the notch, the rotating directions of the two pressing wheels 6012 are the same but the radial positions are not in the same plane, the notch of the pressing wheel 6012 is beside the push plate 5021, the rotating plate 602 is provided with a through hole, and the through hole penetrates the moving sleeve 502, when the air conditioner is turned on, the fresh air is sent into the inner cavity of the indoor main unit 1 from the inlet, and is blown backward after being preliminarily filtered by the primary purification section 1011, the fan 6013 is driven to rotate, since the pawl limits the directional rotation of the ratchet wheel 6011, the fan 6013 drives the coaxially connected pressing wheel 6012 and ratchet wheel 6011 to rotate, the pressing wheel 6012 drives the push plate 5021 to move up and down reciprocatingly once per revolution, the buffer pad bonded to the notch of the pressing wheel 6012 can reduce the sound when hitting the push plate 5021, the moving sleeve 502 moves up and down reciprocatingly under the movement of the push plate 5021, drives the clamping plate 5022 to move up and down reciprocatingly, the clamping plate 5022 rotates and slides relatively in the rotating plate 602, the clamping plate 5022 drives the rotating plate 602 to swing reciprocatingly, so that the air filtered by the primary purification section 1011 can be uniformly supplied from top to bottom, heating or cooling is performed, the air fan coil or condensing pipe is uniformly supplied with air, and no additional driving device is needed, the heating or cooling can be balanced, and the energy saving effect is achieved.

[0054] Wherein, the partition end module 2 divides the independent control area according to the indoor space function, each partition end module 2 contains air volume regulating valve, temperature sensor and humidity sensor, through intelligent algorithm dynamically adjusts the air volume and temperature and humidity of each area, ensures that each area environmental parameter independent accurate control, improves overall comfort and energy efficiency, the partition end module 2 also includes variable air volume end device, end secondary heat exchanger and airflow optimization component, wherein the variable air volume end device is built-in piezoelectric air valve and laser air speed sensor, air supply volume adjusting range 40-550m 3 / h, can be according to personnel moving trajectory dynamic adjustment air supply direction, end secondary heat exchanger adopts microchannel-plate composite structure, through electronic expansion valve+PID temperature compensation algorithm control refrigerant flow, secondary adjusting range 15-31 DEG C, and can independently switch "cooling / heat by-pass" mode, airflow optimization component includes rotatable spherical air port and honeycomb type sound-absorbing static pressure tank, honeycomb type sound-absorbing static pressure tank replaces traditional sound-absorbing cotton, through airflow rectification and helmholtz resonance principle noise reduction, operating noise ≤32dB (A).

[0055] The application discloses an installation method of an energy-saving fresh air air conditioner.

[0056] 1) Early site survey and planning: before installation, the building space size, height, door and window position and structure bearing capacity need to be measured; control areas are divided according to the use function, and the installation position of the partition end module is determined.

[0057] 2) Equipment selection and material preparation: according to the survey results, the matching equipment model is selected, and galvanized steel plate or environment-friendly phenolic composite air pipe, air pipe with a thickness of ≥0.8mmd, refrigerant pipe, heat preservation material, wire and support, sealant, binding tape and other auxiliary materials are prepared.

[0058] 3) Outdoor unit module installation: select an outdoor location with good ventilation and away from bedroom windows to avoid direct sunlight; the equipment foundation adopts concrete pouring or steel support, and the horizontal error is ≤2mm / m; the outdoor unit is fixed on the foundation through expansion bolts, and a shock pad is added to reduce vibration noise; the refrigerant pipe is welded by nitrogen protection, and after welding, a pressure test is carried out at a standard of 2.8MPa on the high-pressure side, 1.8MPa on the low-pressure side, and the pressure is maintained for 24 hours, and the pressure drop is ≤0.02MPa; the pipeline is as short and straight as possible, the number of bends is reduced, and the bending radius is ≥5 times the pipe diameter; the insulation layer is tightly wrapped, the joint is sealed with tape, and dew condensation is avoided.

[0059] 4) Indoor main host group installation: prefer to choose the ceiling or equipment room, ensure the maintenance space; the host is installed horizontally, the error is ≤1 mm / m, fixed by the hanging bracket with an installation interval of less than 1.5 m, and a shock absorber is installed between the hanging bracket and the host; the host air supply and return air outlet and the air pipe are connected by flanges, and 3 mm thick rubber pads are placed between the flanges to ensure sealing; the air speed of the main air pipe is controlled at 8-12 m / s, and the branch air pipe is ≤8 m / s; guide vanes are arranged at the turning points of the air pipe to reduce wind resistance; the gap between the air pipe and the ceiling is filled with fireproof rock wool, and fireproof plugging is done well; the fresh air inlet is located at a clean outdoor air location, at least 2 m above the ground, and a rainproof louver and an insect screen are installed; the horizontal distance between the exhaust outlet and the fresh air inlet is ≥3 m to avoid backflow of exhaust air; the pipeline slope is ≥0.5%, and the lowest point is provided with a condensate water discharge port.

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

[0061] 6) Installation of intelligent sensor network: the zone environment sensor is installed at the center of the area, away from heat sources, air outlets and direct sunlight; the system state sensor is installed at the specified location according to the equipment instruction; the energy consumption monitoring sensor is connected in series in the device power supply circuit to ensure correct wiring; all sensors are paired with the central controller wirelessly, and the communication state is checked through the controller touch screen; for sensors with weak signals, adjust the installation position or add repeaters.

[0062] 7) System debugging: close all air outlets, pressurize the air pipe system to 500 Pa, and the pressure drop within 30 minutes should be ≤50 Pa, otherwise find and seal the leakage point; start the system, test the running state 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 with professional instruments such as thermohygrometers and air volume meters to make the display value deviate from the actual value by ≤1%; simulate different scenarios such as personnel entering, outdoor temperature and humidity changes, etc., observe whether the system adjusts the air supply volume and changes the fresh air ratio according to the preset strategy, and record the adjustment response time.

[0063] 8) Acceptance and delivery: after installation and debugging, carry out continuous 8-hour operation test, monitor the temperature fluctuation, humidity fluctuation, CO2 concentration, system energy consumption and design value deviation of each area; hand over the equipment instruction, installation drawings, warranty card and operation training manual to the user, and guide the user to use the central collaborative control system 4 and the remote APP.

Claims

1. An energy-saving fresh air conditioner, characterized in that, include: The system includes an outdoor unit, an indoor main unit (1), a zone 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 by refrigerant pipes, flanges, and connectors. The indoor main unit (1) is connected to the zone terminal module (2) through an air supply duct. The intelligent sensing unit (3) collects environmental parameters and performs localized preprocessing, and uploads the data to the central collaborative control system (4). The components integrated inside the indoor host unit (1) include: a multi-level fresh air deep treatment 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. It dynamically regulates 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 damper and a laser anemometer, and the air volume adjustment range is 40-550 m³ / h. 3 / h, the terminal secondary heat exchanger adopts a microchannel plate composite structure, and controls the refrigerant flow through electronic expansion valve + PID temperature compensation algorithm. The secondary adjustment range is 15-31℃, and it can independently switch between "cooling / heating / bypass" modes. The airflow optimization components include a rotatable spherical air outlet and a silencer static pressure box. The intelligent sensing unit (3) adopts the "ZigBee3.0+edge computing node" architecture. 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, which supports WiFi 6, Bluetooth 5.2 and 5G / NB-IoT communication. The core of the central collaborative control system (4) adopts a federated learning-spatiotemporal coupling intelligent control algorithm. The algorithm trains user-side data and public meteorological data in a distributed manner. The uniform air supply assembly includes a mounting rod (5) and a fixing bracket (6). The mounting rod (5) is installed on the rear side of the primary purification section (1011), which is installed on the rear side of the fan. A movable sleeve (502) is sleeved on the mounting rod (5). Bases (501) are welded to the upper and lower sides of the mounting rod (5). The bases (501) are fixedly connected to the inner cavity of the indoor unit (1) by bolt assembly. The fixing bracket (6) is fixedly connected between the bases (501). A lever (5021) is provided on the movable sleeve (502). The movable sleeve (502) has an opening. Two annular grooves are provided, and two locking plates (5022) are rotatably engaged in each annular groove. A rotating plate (602) is engaged between the two locking plates (5022). The rotating plate (602) is rotatably connected to the fixed frame (6) via a shaft. A rotating shaft (601) is engaged on the fixed frame (6). A ratchet (6011), a pressure roller (6012), and a fan (6013) are coaxially connected on the rotating shaft (601). A pawl is installed on the side of the ratchet (6011). The pawl is connected to the fixed frame (6) via a shaft. A through hole is provided inside the rotating plate (602), and the through hole is penetrated by a movable sleeve (502).

2. The energy-saving fresh air conditioner as described in claim 1, characterized in that: The outdoor unit uses a wide-frequency inverter compressor unit, equipped with a three-dimensional turbulence heat exchanger and a magnetic levitation inverter fan. It adopts a dynamic energy efficiency ratio closed-loop regulation mechanism: the compressor operating frequency is set to be continuously adjustable from 8-130Hz. By monitoring the enthalpy change of the refrigerant circulation and the environmental thermal resistance in real time, combined with the load prediction value output by the edge computing node, the frequency adjustment step size is automatically corrected. In addition, the outdoor unit integrates a multi-dimensional environmental sensing unit to monitor the outdoor temperature, humidity, PM2.5 and TSP concentration in real time.

3. The energy-saving fresh air conditioner as described in claim 1, characterized in that: The multi-stage fresh air deep treatment unit (101) includes: Primary purification section (1011) is installed on the rear side of the air inlet and uses a gradient density composite filter. The heat recovery core is installed on the rear side of the primary purification section (1011). The heat recovery core adopts a counter-current-cross-current composite flow channel structure, and the core material is graphene-modified aluminum foil. The deep treatment section (1012) is installed behind the fan coil and condenser tubes of the high-efficiency heat recovery core. The deep treatment section (1012) is equipped with an integrated variable frequency heat pump module and a bipolar rotary dehumidification component. The heat pump module is regulated in coordination with the electronic expansion valve through a four-way valve. The rotary dehumidification component is filled with composite adsorption material, which is composed of silica gel, activated carbon and montmorillonite. Fine filtration section (1013) is installed behind the deep treatment section (1012). Fine filtration section (1013) adopts a combination of H13 grade HEPA filter and UV-C photocatalytic module.

4. The energy-saving fresh air conditioner as described in claim 3, characterized in that: The intelligent adjustment unit for return air ratio is equipped with a four-way valve consisting of a magnetostrictive proportional control valve, a fresh air valve, a return air valve, an exhaust air valve, and a bypass 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 outdoor air quality.

5. The energy-saving fresh air conditioner as described in claim 3, characterized in that: The adaptive air supply unit uses a mixed-flow fan and is equipped with a rare-earth permanent magnet synchronous variable frequency motor, with an air volume adjustment range of 280-3200 m³ / h. 3 / h, the air pressure is automatically compensated through a dual closed-loop control of "duct resistance - air volume feedback".

6. The energy-saving fresh air conditioner as described in claim 1, characterized in that: The zoned environmental sensors are equipped with VOC concentration monitoring, combined with temperature, humidity, CO2 concentration and personnel presence status. The system status sensors are equipped with heat exchangers, frost sensors and fan vibration sensors. The energy consumption-energy efficiency dual monitoring sensor is equipped with a flow meter on the refrigerant pipeline connected to it. Combined with the smart meter, the system COP is calculated in real time and fed back to the central collaborative control system (4).

7. The energy-saving fresh air conditioner as described in claim 1, characterized in that: The pressure roller (6012) is a cam with a notch. A buffer pad is fixedly bonded to one side of the notch. The two pressure rollers (6012) rotate in the same direction but their radial positions are not in the same plane. The notch of the pressure roller (6012) is located on the side of the dial plate (5021).

8. The installation method of an energy-saving fresh air conditioner as described in any one of claims 1-7, characterized in that: Includes the following steps: 1) Preliminary site survey and planning: Before installation, measure the building space dimensions, floor height, door and window positions and structural load-bearing capacity, divide the control area according to the function, and determine the installation position of the end module (2) of the zone; 2) Equipment selection and material preparation: Select the matching equipment model based on 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 brackets for the equipment foundation; fix the outdoor unit to the foundation with expansion bolts and install shock-absorbing pads; use nitrogen-protected welding for refrigerant pipes and conduct a pressure test after welding; connect pipes with short, straight routes to reduce bends, with a bending radius ≥ 5 times the pipe diameter; wrap the insulation layer tightly and seal the joints with tape; 4) Installation of indoor unit (1): Select the ceiling or equipment room to ensure maintenance space; the unit is installed horizontally with an error of ≤1mm / m, and fixed by the hanger. The hanger and the unit are equipped with shock absorbers; the air supply and return vents of the unit are connected to the air duct by flanges, and 3mm thick rubber gaskets are placed between the flanges; the wind speed of the main air duct is controlled at 8-12m / s, the branch air duct is ≤8m / s, and the air duct bends are set with guide vanes; the gap between the air duct and the ceiling is filled with fireproof rock wool; the fresh air inlet is located in the outdoor air clean area, ≥2m above the ground, and is equipped with rainproof louvers and insect nets; 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 the lowest point is set with a condensate drain outlet. The base (501) is installed in the indoor unit (1) using bolt assembly, the fixing bracket (6) is installed between the bases (501), and the fan (6013) is located directly behind the primary purification section (1011); 5) Installation of zoned terminal modules: The supply air outlet is installed at the top of the room, and the return air outlet is at the bottom. The distance between the supply and return air outlets is ≥1.5m to avoid short circuits; the air outlets and air ducts are connected by flexible connections; the variable air volume terminal and the terminal heat exchanger are installed in the ceiling and fixed by angle steel brackets; air leakage testing is performed after installation. 6) Intelligent sensor network installation: Zoned environmental sensors are installed in the center of the area, away from heat sources, wind vents and direct sunlight; system status sensors are installed in the 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. For sensors with weak signals, the installation position is adjusted or repeaters are added. 7) System debugging: Close all air vents, pressurize the duct system to 500Pa, and ensure the pressure drop is ≤50Pa within 30 minutes; start the system, test the operating status of each device in sequence, and adjust the frequency range of the inverter device; calibrate the sensor data with professional instruments to ensure that the deviation between the displayed value and the actual value is ≤1%; simulate different scenarios, observe whether the system adjusts according to the preset strategy, and record the adjustment response time; 8) Acceptance and delivery: After installation and commissioning, conduct 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.

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