An integrated IoT fan coil unit

Abstract

This utility model relates to an integrated IoT fan coil unit, including a housing and a surface cooler, a surface cooler bracket, a motor, a fan, a condensate drain pan, and a condensate lift pump located within the housing. The surface cooler is mounted on the surface cooler bracket, and the condensate drain pan is located below the surface cooler and fixed to the surface cooler bracket. The fan is connected and fixed to the central shaft of the motor. It also includes a proportional-integral (PI) control valve, a temperature sensor, an edge calculator, and a thermostat. The PI control valve is connected to the outlet of the surface cooler. The temperature sensor is located at the inlet and outlet of the surface cooler to detect the inlet and outlet water temperatures. The edge calculator is located inside the housing and is electrically connected to the PI control valve, the motor, the temperature sensor, and the condensate lift pump. The thermostat and the edge calculator are connected via Bluetooth. This utility model enables intelligent sensing and precise control of the fan coil unit's operating status, while simplifying the installation and commissioning process of the terminal equipment.

Description

Technical Field

[0001] This application relates to the field of fan coil units, and in particular to an integrated Internet of Things (IoT) fan coil unit. Background Technology

[0002] Fan coil units, as key terminal equipment in HVAC systems, are widely used in various environments such as commercial buildings, offices, hotels, and residences, offering advantages such as compact structure, flexible layout, and convenient installation. Traditional fan coil units typically consist of a cooling coil, fan, motor, and casing, with a relatively simple overall structure and primarily focused on basic air cooling or heating. In recent years, to improve operational quietness and comfort, some products have replaced asynchronous AC motors with DC brushless motors and metal fans with ABS material fans. However, overall, there is still a lack of substantial breakthroughs in energy-saving control, intelligent interaction, and system integration, and true intelligent control and dynamic energy efficiency management have not yet been achieved.

[0003] In current central air conditioning system applications, conventional fan coil units generally suffer from insufficient terminal control capabilities and low adjustment precision. Most fan coil units still employ constant flow or simple two-way valve control methods, failing to dynamically adjust water flow according to room load. This results in constant high-flow operation of the water pump, significantly increasing system energy consumption. Simultaneously, most devices only support simple start / stop or fixed-speed adjustment, making it difficult to achieve real-time response and optimized adjustment to temperature changes. Existing equipment generally lacks intelligent data acquisition and feedback mechanisms, hindering its effective participation in the dynamic control of smart energy platforms. Furthermore, during installation, the dispersed control components and complex electrical wiring of traditional fan coil units increase on-site construction workload and negatively impact overall reliability and ease of subsequent maintenance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an integrated IoT fan coil unit that enables intelligent sensing and precise control of the fan coil unit's operating status, while simplifying the installation and commissioning process of terminal equipment.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An integrated IoT fan coil unit includes a housing and a surface cooler, a surface cooler bracket, a motor, a fan, a condensate drip tray, and a condensate lift pump located within the housing. The surface cooler is mounted on the surface cooler bracket, and the condensate drip tray is positioned below the surface cooler and fixed to the surface cooler bracket. The fan is connected and fixed to the central shaft of the motor. The unit also includes a proportional-integral (PI) control valve, a temperature sensor, an edge calculator, and a thermostat. The PI control valve is connected to the outlet of the surface cooler. The temperature sensor is located at both the inlet and outlet of the surface cooler to detect the inlet and outlet water temperatures. The edge calculator is located within the housing and is electrically connected to the PI control valve, the motor, the temperature sensor, and the condensate lift pump. The thermostat is connected to the edge calculator via Bluetooth.

[0007] Preferably, the outer casing includes a duct chamber and a return air box. The duct chamber includes an upper duct chamber cover, a lower duct chamber cover, a left duct chamber cover, a right duct chamber cover, and a duct chamber maintenance plate. The return air box includes an upper return air box cover, a lower return air box cover, a left return air box cover, a right return air box cover, a return air box back plate, and a return air box maintenance plate.

[0008] Preferably, the outer casing is provided with an air outlet and an air return outlet. The air outlet is connected to the duct chamber via an air outlet canvas flexible joint, and the air return outlet is connected to the air return box via an air return outlet canvas flexible joint.

[0009] Preferably, it also includes a guide plate, which is disposed between the surface cooler and the condensate drip tray and is fixedly connected to the surface cooler bracket.

[0010] Preferably, the condensate lift pump is fixed on the inspection plate of the pipe chamber and connected to the pagoda-shaped direct connector through the condensate drain pipe. The inlet of the condensate lift pump is located at the lowest point of the condensate collection pan. When the condensate reaches the set water level, the edge calculator controls the condensate lift pump to start and discharge the condensate.

[0011] Preferably, the inlet of the surface cooler is connected by a double-joint external thread, a Y-shaped filter, and a threaded connector via threaded connections, and the outlet of the surface cooler is connected by a double-joint external thread, a proportional-integral regulating valve, and a threaded connector via threaded connections.

[0012] Preferably, the fan is configured to rotate at maximum speed under the control of the edge calculator after the IoT fan coil unit is powered on.

[0013] Preferably, the proportional-integral regulating valve is configured to be adjusted from closed to maximum opening under the control of the edge calculator after the IoT fan coil unit is powered on.

[0014] Preferably, the edge calculator is configured to receive the inlet and outlet water temperature difference collected by the temperature sensor and control the opening degree of the proportional-integral regulating valve according to the temperature difference.

[0015] Preferably, the thermostat is connected to the smart energy platform via a network. The thermostat is used to obtain the real-time flow calculated by the edge calculator based on the opening degree of the proportional-integral control valve, and transmits the real-time flow to the smart energy platform via 4G. The smart energy platform is used to collect statistics on multiple end-user demands and dynamically regulate the host and water pump.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] (1) This utility model integrates key control components such as proportional integral regulating valve, temperature sensor, and condensate pump into the fan coil unit in advance, and is equipped with Y-shaped filter, canvas flexible connector for air outlet and canvas flexible connector for air return, etc., which reduces the on-site assembly steps of traditional terminal equipment during installation, significantly reduces the installation complexity, and improves the overall connection reliability and installation consistency of the equipment; by setting an edge calculator in the fan coil unit and wirelessly communicating with the temperature controller via Bluetooth, there is no need to lay additional signal lines or cut grooves for wiring. It can be put into use simply by connecting the live wire and the neutral wire, which greatly reduces the workload of electrical installation and debugging. It is especially suitable for projects with limited space or renovation projects, and improves the efficiency of on-site construction and the flexibility of system deployment.

[0018] (3) By setting inlet and outlet water temperature sensors and edge calculator, the supply and return water temperatures and proportional integral regulating valve opening information during the operation of the fan coil unit can be collected in real time. The edge calculator performs flow estimation and data processing, and then transmits the data to the thermostat via Bluetooth to realize intelligent perception and local decision support of the terminal equipment operation status. The thermostat uploads the above operation data to the smart energy management platform through 4G communication. The platform can perform comprehensive analysis and dynamic control based on different terminal data, automatically adjust the operating parameters of the air conditioning host and water pump, so that the system always operates in the high energy efficiency range, thereby improving the overall energy use efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the integrated IoT fan coil unit according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the integrated IoT fan coil unit according to another embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of the integrated IoT fan coil unit according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the pipe chamber of the integrated IoT fan coil unit according to an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Surface cooler; 2-Motor; 3-Fan; 4-Proportional-integral control valve; 5-Y-type filter; 6-Double-joint external thread; 7-Surface cooler bracket; 8-T-type washer; 9-Threaded connector; 10-Temperature sensor; 11-Baffle plate; 12-Pagoda-to-direct connector; 13-Condensate drip tray; 14-Condensate lift pump; 15-Condensate drain pipe; 16-Edge calculator; 17-Pipe chamber cover; 18-Lower cover of duct chamber; 19-Left cover of duct chamber; 20-Right cover of duct chamber; 21-Upper cover of return air box; 22-Lower cover of return air box; 23-Left cover of return air box; 24-Right cover of return air box; 25-Back panel of return air box; 26-Inspection plate of return air box; 27-Inspection plate of duct chamber; 28-Canvas flexible joint of air outlet; 29-Air outlet; 30-Canvas flexible joint of return air outlet; 31-Return air outlet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model belong to the present utility model.

[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0027] like Figures 1-4As shown, this embodiment discloses an integrated IoT fan coil unit, including a housing and a surface cooler 1, a surface cooler bracket 7, a motor 2, a fan 3, a condensate drain pan 13, and a condensate lift pump 14 located within the housing. The surface cooler 1 is mounted on the surface cooler bracket 7 and is used for heat exchange with the air. The surface cooler bracket 7 serves as a structural support component, ensuring the surface cooler 1 is stably installed inside the fan coil unit, forming a compact integrated structure. The condensate drain pan 13 is located below the surface cooler 1 and fixed to the surface cooler bracket 7. The condensate drain pan 13 is used to collect the condensate generated during the operation of the surface cooler 1, and its low position facilitates centralized water drainage. The fan 3 is connected and fixed to the central shaft of the motor 2. Driven by the motor 2, the fan 3 rotates, forming an airflow that pushes indoor air through the surface cooler 1, thereby regulating the air temperature.

[0028] This embodiment also includes a proportional-integral (PI) regulating valve 4, a temperature sensor 10, an edge calculator 16, and a thermostat (not shown in the figure). The PI regulating valve 4 is connected to the outlet of the surface cooler 1 to regulate the water flow through the surface cooler 1, thereby precisely controlling the heat exchange efficiency. The temperature sensor 10 is respectively installed at the inlet and outlet of the surface cooler 1 to detect the inlet and outlet water temperatures, thereby obtaining temperature difference data for adjustment and control. The edge calculator 16 is installed inside the housing and is electrically connected to the PI regulating valve 4, the motor 2, the temperature sensor 10, and the condensate lift pump 14. As the local control unit of this device, the edge calculator 16 has data acquisition, judgment, and control functions. It adjusts the valve opening, controls the motor speed, and starts the condensate lift pump 14 when the condensate reaches the set water level by acquiring temperature information. The thermostat is connected to the edge calculator 16 via Bluetooth. The thermostat receives control data from the edge calculator 16 and transmits it to the smart energy platform. Bluetooth communication reduces the need for on-site wiring and improves installation flexibility and system integration.

[0029] This embodiment integrates multiple modules into a single fan coil unit, forming a highly modular integrated structure. This avoids the problems of complex wiring and dispersed control units present in split installations, demonstrating the advantages of an integrated design. Simultaneously, this device achieves intelligent sensing and data feedback at the fan coil unit level through wireless communication between the edge calculator 16 and the thermostat. It constructs an IoT node connecting the user terminal and the platform system, enabling the air conditioning system to possess terminal sensing, real-time response, and platform linkage capabilities, aligning with the development trend of building energy conservation and intelligent management.

[0030] Furthermore, the outer casing includes a duct chamber and a return air box. The duct chamber includes an upper duct chamber cover 17, a lower duct chamber cover 18, a left duct chamber cover 19, a right duct chamber cover 20, and a duct chamber access panel 27. The outer casing adopts a partitioned modular design, where each cover in the duct chamber area is used to cover the piping components, including the surface cooler 1, surface cooler bracket 7, condensate drip tray 13, and condensate booster pump 14, forming a modular structure with good sealing and easy installation and maintenance. In particular, the duct chamber access panel 27 enables quick access and maintenance of internal components. The return air box includes an upper cover 21, a lower cover 22, a left cover 23, a right cover 24, a back plate 25, and a maintenance plate 26. The structural design of the return air box is used to define the return air channel. Multiple covers are assembled to form a complete air duct shell. The air duct shell contains a motor 2, a fan 3, and an edge calculator 16. The maintenance plate 26 facilitates the inspection of the fan 3 and its operating area, improves the efficiency of later maintenance, and ensures structural integrity and airflow tightness.

[0031] The outer casing is equipped with an air outlet 29 and a return air inlet 31. The air outlet 29 is connected to the duct chamber via an air outlet canvas flexible joint 28, and the return air inlet 31 is connected to the return air box via a return air inlet canvas flexible joint 30. The air outlet 29 and return air inlet 31 serve as the interface between this equipment and indoor air circulation, undertaking the crucial function of airflow exchange. The use of a canvas flexible joint structure provides flexibility, adjustable angle, and vibration resistance, effectively mitigating stress concentration caused by installation errors in rigid ductwork. It also reduces noise transmission and vibration propagation during fan operation, further enhancing the comfort and stability of the fan coil unit. Accessories such as the air outlet canvas flexible joint 28 and the return air inlet canvas flexible joint 30, which would normally require on-site installation, are pre-installed, reducing on-site installation workload and avoiding problems such as joint misalignment and loosening caused by differences in construction personnel experience. This results in higher installation reliability and facilitates consistent manufacturing and large-scale application of the equipment.

[0032] In some embodiments, a nano dust removal and sterilization filter device 32 is also included. The nano dust removal and sterilization filter device 32 is disposed between the lower cover 22 of the return air box and the canvas flexible joint 30 of the return air vent. The nano dust removal and sterilization filter device 32 adopts a nano-level filter element, which can effectively filter dust particles and airborne bacteria in the air entering the fan coil unit, improve air cleanliness, and is particularly suitable for scenarios such as hospitals, schools, and office buildings with high requirements for indoor air quality.

[0033] This embodiment also includes a guide plate 11, which is disposed between the surface cooler 1 and the condensate collection pan 13 and is fixedly connected to the surface cooler bracket 7. The guide plate 11 serves as a flow-guiding structure, guiding the condensate formed during the heat exchange process of the surface cooler 1 to collect in the condensate collection pan 13 below, preventing condensate from randomly dripping onto the inner wall of the equipment and causing corrosion or water accumulation, thus helping to keep the inside of the equipment clean and improving drainage efficiency. In cooling and dehumidification modes, the condensate generated by the surface cooler 1 is collected by the guide plate 11 into the condensate collection pan 13, ensuring concentrated water flow and enhancing drainage smoothness.

[0034] In addition, the condensate lift pump 14 is fixed on the access panel 27 of the pipe chamber and connected to the pagoda-shaped direct connector 12 via the condensate drain pipe 15. The pagoda-shaped direct connector 12 is fixed to the left cover 19 of the pipe chamber on the outer casing. As the core actuator of the condensate drainage system, the condensate lift pump 14 is mounted on the detachable access panel 27 for easy maintenance. The drainage path is connected to an external hose via the pagoda-shaped direct connector 12 for quick connection. The inlet of the condensate lift pump 14 is located at the lowest point of the condensate collection pan 13, maximizing the collection of water accumulated at the bottom of the pan, improving drainage efficiency, and preventing water residue. When the condensate reaches the set water level, the edge calculator 16 controls the condensate lift pump 14 to start and drain the condensate. The edge calculator 16 automatically starts the pump and drains the condensate by linking with the water level detection signal, preventing condensate overflow or accumulation and improving the overall stability and intelligence of the machine.

[0035] like Figures 3-4 As shown, the inlet of the surface cooler 1 is connected by a double-joint external thread 6, a Y-shaped filter 5, and a threaded connector 9 via threads. The double-joint external thread 6 is used to achieve a detachable connection, facilitating equipment maintenance and component replacement. The Y-shaped filter 5 is pre-installed and is used for primary filtration of the water entering the surface cooler 1, intercepting impurities and particles to prevent clogging of the surface cooler 1 and improve the stability and heat exchange efficiency of the system. The T-shaped gasket 8 is located where the inlet pipe passes through the outer shell to achieve a sealed connection between the inlet pipe of the surface cooler 1 and the outer shell, preventing condensation or leakage from affecting the internal structure of the equipment. The threaded connector 9 serves as a thread conversion interface to achieve adaptable connections between different interface specifications, ensuring connection sealing and structural strength. The outlet of the surface cooler 1 is connected by a double-joint external thread 6, a proportional-integral regulating valve 4, and a threaded connector 9 via threaded connections. The proportional-integral regulating valve 4 is used to proportionally regulate the outlet water flow rate, thereby achieving dynamic control of the heat exchange capacity. Working in conjunction with the edge calculator 16, it can adjust the valve opening according to the temperature difference between the inlet and outlet water, improving energy efficiency and temperature control accuracy. The T-type gasket 8 is also used for sealing between the outlet pipe and the outer casing to prevent leakage at the interface during operation. The threaded connector 9 continues to serve as a connection conversion function, ensuring the smoothness and maintainability of the overall water system.

[0036] Furthermore, the wiring in the duct chamber enters the return air box through a waterproof connector 33. As a sealing component for the cable crossing area, the waterproof connector 33 effectively isolates moisture and water vapor penetration, ensuring good sealing protection for electrical wiring extending from the duct chamber as it passes through structural partitions, preventing condensation or moisture from entering the return air box. The installation of this waterproof connector 33 avoids potential moisture in the duct chamber area from causing corrosion, short circuits, and other adverse effects on electrical components such as the motor 2 and edge calculator 16 in the return air box, further enhancing the overall electrical safety and operational reliability of the unit.

[0037] In this embodiment, the fan 3 is configured to rotate at its maximum speed under the control of the edge calculator 16 after the IoT fan coil unit is powered on. As the power component for airflow, the fan 3 continuously circulates indoor air through the surface cooler 1 through high-speed rotation, achieving heat exchange. During initial startup or under heavy load, the edge calculator 16 outputs a maximum speed signal to ensure the system can quickly respond to usage demands and shorten temperature and humidity adjustment time. Similarly, the proportional-integral control valve 4 is configured to adjust from closed to its maximum opening under the control of the edge calculator 16 after the IoT fan coil unit is powered on. As a key component for water supply control, the proportional-integral control valve 4 is initially closed. When the system is powered on, the edge calculator 16 issues a fully open command to it, allowing cold / hot water to quickly fill the surface cooler 1, establishing an effective heat exchange cycle and laying the foundation for subsequent fine-tuning. After starting operation, the edge calculator 16 is configured to receive the inlet and outlet water temperature difference collected by the temperature sensor 10 and control the opening of the proportional-integral control valve 4 based on this temperature difference. The edge calculator 16 continuously monitors the inlet and outlet water temperature data fed back by the temperature sensor 10, calculates the current heat exchange efficiency and dynamically judges the changes in terminal load, and then adjusts the opening of the proportional integral regulating valve 4 in real time to keep the heat exchange process in the high-efficiency range, effectively improving the system response speed and energy saving effect.

[0038] Furthermore, the thermostat and the smart energy platform are connected via a network. The thermostat acts as a data relay device between the terminal and the platform, maintaining information interaction with the platform through wireless communication, thus constructing a complete Internet of Things (IoT) system architecture. The thermostat is used to obtain the real-time flow calculated by the edge calculator 16 based on the opening of the proportional-integral control valve 4. The edge calculator 16 calculates the actual water flow of the current fan coil unit based on the valve opening and system parameters, and transmits this flow data to the thermostat via Bluetooth, avoiding the problems of complex wiring and easy failure in traditional wired transmission. The thermostat transmits this real-time flow to the smart energy platform via 4G, using public network communication to achieve cross-regional and multi-device data aggregation and uploading, ensuring that the management platform can monitor the operating status of the terminal equipment in real time. The smart energy platform is used to collect data on the demand of multiple terminals and dynamically control the host and water pumps. By centrally analyzing real-time data from each fan coil unit, the platform dynamically optimizes the start-up and shutdown strategies and operating parameters of the cold and heat source system, ensuring that the host and water pumps always operate in the high-efficiency range, reducing energy waste and improving the intelligence and energy-saving level of the entire HVAC system.

[0039] In summary, this utility model discloses an integrated IoT fan coil unit, which structurally integrates components such as a surface cooler 1, a fan 3, a motor 2, a condensate drip tray 13, a condensate lift pump 14, a proportional-integral regulating valve 4, a temperature sensor 10, an edge calculator 16, and a thermostat. Through optimized housing structure and connection interfaces, it achieves high modularity and pre-installed integration. Through intelligent control of the edge calculator 16 and wireless communication with the thermostat, it can realize multiple functions such as water flow regulation, temperature difference feedback, flow monitoring, and automatic drainage, improving the sensing, regulation, and response capabilities of the fan coil unit's terminal. This device, while improving installation efficiency and operational reliability, achieves data linkage with a smart energy platform, dynamically controlling the operating status of the air conditioning system's main unit and water pump, thereby ensuring the entire air conditioning system operates in a highly efficient and energy-saving range. Compared to traditional fan coil unit systems, this utility model not only simplifies installation but also enhances the equipment's intelligence level and engineering adaptability, possessing good promotional value and application prospects, especially suitable for modern building environments with high requirements for energy consumption management and intelligent operation and maintenance.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated IoT fan coil unit, comprising a housing and a surface cooler (1), a surface cooler bracket (7), a motor (2), a fan (3), a condensate drip tray (13), and a condensate lift pump (14) located within the housing, wherein the surface cooler (1) is mounted on the surface cooler bracket (7), the condensate drip tray (13) is disposed below the surface cooler (1) and fixed on the surface cooler bracket (7), and the fan (3) is connected and fixed on the central shaft of the motor (2), characterized in that, It also includes a proportional-integral control valve (4), a temperature sensor (10), an edge calculator (16), and a thermostat. The proportional-integral control valve (4) is connected to the outlet of the surface cooler (1). The temperature sensor (10) is respectively set at the inlet and outlet of the surface cooler to detect the inlet and outlet water temperatures. The edge calculator (16) is set inside the housing and is electrically connected to the proportional-integral control valve (4), the motor (2), the temperature sensor (10), and the condensate lift pump (14). The thermostat is connected to the edge calculator (16) via Bluetooth.

2. The integrated IoT fan coil unit according to claim 1, characterized in that, The outer casing includes a duct chamber and a return air box. The duct chamber includes an upper cover (17), a lower cover (18), a left cover (19), a right cover (20), and a maintenance plate (27). The return air box includes an upper cover (21), a lower cover (22), a left cover (23), a right cover (24), a back plate (25), and a maintenance plate (26).

3. The integrated IoT fan coil unit according to claim 2, characterized in that, The outer casing is provided with an air outlet (29) and a return air outlet (31). The air outlet (29) is connected to the duct chamber through an air outlet canvas flexible connector (28), and the return air outlet is connected to the return air box through a return air outlet canvas flexible connector (30).

4. The integrated IoT fan coil unit according to claim 3, characterized in that, It also includes a guide plate (11), which is disposed between the surface cooler (1) and the condensate collection pan (13) and is fixedly connected to the surface cooler bracket (7).

5. The integrated IoT fan coil unit according to claim 4, characterized in that, The condensate lift pump (14) is fixed on the inspection plate (27) of the pipe chamber and connected to the pagoda direct connector (12) through the condensate drain pipe (15). The inlet of the condensate lift pump (14) is located at the lowest point of the condensate receiving pan (13). When the condensate reaches the set water level, the edge calculator (16) controls the condensate lift pump (14) to start and discharge the condensate.

6. The integrated IoT fan coil unit according to claim 5, characterized in that, The inlet of the surface cooler (1) is connected by a double-joint external thread (6), a Y-shaped filter (5) and a threaded connector (9) via threaded connection. The outlet of the surface cooler (1) is connected by a double-joint external thread (6), a proportional integral regulating valve (4) and a threaded connector (9) via threaded connection.

7. The integrated IoT fan coil unit according to any one of claims 1-6, characterized in that, The fan (3) is configured to rotate at maximum speed under the control of the edge calculator (16) after the IoT fan coil unit is powered on.

8. The integrated IoT fan coil unit according to claim 7, characterized in that, The proportional-integral regulating valve (4) is configured to be adjusted from closed to maximum opening under the control of the edge calculator (16) after the IoT fan coil unit is powered on.

9. The integrated IoT fan coil unit according to claim 8, characterized in that, The edge calculator (16) is configured to receive the inlet and outlet water temperature difference collected by the temperature sensor (10) and control the opening degree of the proportional-integral regulating valve (4) according to the temperature difference.

10. The integrated IoT fan coil unit according to claim 9, characterized in that, The thermostat is connected to the smart energy platform via a network. The thermostat is used to obtain the real-time flow calculated by the edge calculator (16) based on the opening degree of the proportional-integral regulating valve (4) and transmit the real-time flow to the smart energy platform via 4G. The smart energy platform is used to statistically analyze the demand of multiple terminals and dynamically regulate the host and water pump.

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