Modular multi-mode radiant air conditioning system

Abstract

The utility model provides a kind of modularization multi-mode radiation air conditioning system, comprising: cold and heat source module, integrated water distribution module, multi-mode radiation terminal module, the integrated water distribution module includes shell, distribution collector, control valve, the distribution collector is fixed in shell;Multiple parallel water supply and return branch pipes are respectively arranged on distribution main and collection main, each water supply and return branch pipe includes first type radiation terminal interface or second type radiation terminal interface, the control valve is integrally installed in the water supply and return branch pipe of distribution collector, and is fixed in shell;Multi-mode radiation terminal module includes at least two different types of radiation terminals, each radiation terminal is connected with first type radiation terminal interface or second type radiation terminal interface, distribution collector, control valve of each water supply and return branch pipe can be integrated in a shell, reduce the design collaborative difficulty and on-site construction complexity, improve the maintenance efficiency of component.

Description

Technical Field

[0001] This utility model relates to the field of building heating, ventilation and air conditioning, and in particular to a modular multi-mode radiant air conditioning system. Background Technology

[0002] With the development of society and economy and the improvement of people's living standards, people have put forward unprecedentedly high requirements for the comfort, health, and energy efficiency of indoor thermal and humidity environments. Against this backdrop, radiant air conditioning systems, as a terminal form that mainly uses radiant heat exchange, have been widely used in high-end residences, office buildings, medical facilities, and educational institutions due to their many advantages, such as uniform temperature distribution, no draft, and the ability to utilize both high-temperature cold sources and low-temperature heat sources.

[0003] Radiant air conditioning systems typically handle the sensible heat load of an indoor space, effectively regulating the ambient temperature. However, to fully guarantee indoor air quality and thermal-humidity balance, two key needs must be addressed: firstly, meeting the needs of occupants for fresh air and diluting indoor pollutants; and secondly, independently handling the latent heat (humidity) load. Therefore, radiant air conditioning systems must be integrated with a separate fresh air system to form a "radiant + fresh air" composite air conditioning system. Theoretically, this is an ideal solution for achieving high comfort and low energy consumption.

[0004] However, in current engineering practice, the implementation of such composite systems generally suffers from a series of inherent structural and implementation defects, which severely restrict the realization of their advantages: (1) Low physical integration and redundant and complex system structure: In traditional designs, the hydraulic distribution of multiple radiating terminals (such as the hydraulic pipelines of ceiling capillary networks, floor heating coils, manifolds, valve sensors, etc.) all need to be designed, purchased and installed separately. This decentralized architecture results in various pipelines crisscrossing within the ceiling space, frequently causing intersections and conflicts. The low integration of the system layout not only occupies a large amount of building space, but also greatly increases the difficulty of design coordination and on-site construction complexity, and reduces maintenance efficiency.

[0005] (2) Hydraulic distribution is the core of stable operation of a radiant water system. Usually, each area or loop needs to be independently configured with a manifold, and equipped with various control valves such as flow regulating valves, on / off valves, air vents, and drain valves. However, these key devices are often installed separately in the ceiling, pipe shafts, or behind the inspection ports in the corners of the walls. This layout has many problems: (1) During the installation and commissioning period, multiple scattered points need to be operated one by one, which significantly increases the labor and time costs; (2) During operation and maintenance, it is difficult for maintenance personnel to quickly locate valves, resulting in low efficiency in troubleshooting; (3) The lack of centralized and modular physical integration units leads to a "fragmented" state of the system, which increases the operational risks.

[0006] (3) Lack of standardization in multi-terminal connections easily leads to hydraulic imbalance: In complex scenarios, multiple types of radiant terminals are often required, such as fast-response ceiling radiant panels bearing the main cooling load, supplemented by floor radiant systems with high thermal inertia to supplement winter heating. However, these two types of terminals differ greatly in terms of structural form and hydraulic characteristics (such as resistance and flow requirements). Existing technologies mostly rely on on-site construction experience, piecing together different pipe diameters and valves, lacking standardized guidance at the physical structure level, which easily leads to hydraulic imbalance in the system, causing local overcooling / overheating, seriously affecting system energy efficiency and indoor comfort.

[0007] To address the above-mentioned problems, this utility model provides a modular multi-mode radiant air conditioning system to solve at least one of the aforementioned issues. Summary of the Invention

[0008] To address at least one problem in the existing technology, this utility model proposes a modular multi-mode radiant air conditioning system that physically integrates multiple components, such as the manifold and control valves of each supply and return water branch, which originally required separate procurement and independent installation, into a standardized and compact housing. This reduces the difficulty of design coordination and on-site construction complexity, and improves the maintenance efficiency of the components.

[0009] The first aspect of this utility model provides a modular multi-mode radiant air conditioning system, comprising: a cold / heat source module, an integrated hydraulic distribution module, and a multi-mode radiant terminal module. The integrated hydraulic distribution module includes a housing, a manifold, and a control valve, with the manifold fixed inside the housing. The manifold includes a main water supply pipe and a main water collection pipe arranged parallel to the main water supply pipe. Multiple parallel supply and return water branches are respectively provided on the main water supply pipe and the main water collection pipe. Each supply and return water branch includes a first-type radiant terminal interface or a second-type radiant terminal interface. The control valve is integrated into the supply and return water branches of the manifold and fixed inside the housing. The outlet of the cold / heat source module is connected to the inlet pipe of the main water supply pipe, and the return water outlet of the cold / heat source module is connected to the outlet pipe of the main water collection pipe. The multi-mode radiant terminal module includes at least two different types of radiant terminals, each type of radiant terminal corresponding to a first-type radiant terminal interface or a second-type radiant terminal interface.

[0010] Optionally, the integrated hydraulic distribution module further includes a sensor mounting interface, which is located on the main pipe, supply and return water branch, or housing panel of the manifold; the radiant and fresh air integrated air conditioning system further includes an environmental sensing module, which is installed on a preset sensor mounting interface.

[0011] Furthermore, the modular multi-mode radiant air conditioning system also includes a control module, the input of which is communicatively connected to the output of the environmental sensing module, and the output of which is electrically connected to the input of the control valve.

[0012] Furthermore, the environmental sensing module includes a surface temperature sensor, an air temperature and humidity sensor, and a CO2 sensor. The surface temperature sensor is installed at each type of radiant terminal, the air temperature and humidity sensor is installed in the return air area of ​​each room, and the CO2 sensor is installed on the interior wall area of ​​the room.

[0013] Optionally, the integrated hydraulic distribution module further includes a control unit interface, which is located at the bottom of the housing. The control module is electrically connected to the environmental sensing module and the control valve through the control unit interface.

[0014] Optionally, the modular multi-mode radiant air conditioning system further includes a fresh air handling module, which includes a fresh air unit and chilled / hot water coils. The inlet of the chilled / hot water coils of the fresh air unit is connected to the outlet pipe of the cold / heat source module, and the outlet of the chilled / hot water coils of the fresh air unit is connected to the return pipe of the cold / heat source module.

[0015] Furthermore, the water distribution main pipe includes a first water supply branch and a second water supply branch, and the water collection main pipe includes a first return water branch and a second return water branch; the interfaces of the first water supply branch, the second water supply branch, the first return water branch and the second return water branch are all first-type radiant terminal interfaces, and the first-type radiant terminal interfaces are all connected to the first-type radiant terminal pipeline, wherein the first-type radiant terminal is a ceiling radiant terminal.

[0016] Furthermore, the ceiling radiant terminal includes a ceiling panel, a capillary network radiant module, and a fresh air supply outlet. The central area of ​​the ceiling panel is provided with a circular recessed platform for installing the fresh air supply outlet. The fresh air supply outlet is connected to the fresh air outlet pipe of the fresh air unit. The ceiling panel is provided with a capillary network radiant module inside, and the capillary network radiant module is connected to the interface pipe of the first type of radiant terminal.

[0017] Optionally, the water distribution main pipe includes a third water supply branch and a fourth water supply branch, and the water collection main pipe includes a third water return branch and a fourth water return branch; the interfaces of the third water supply branch, the fourth water supply branch, the third water return branch and the fourth water return branch are all second-type radiant terminal interfaces, and the second-type radiant terminal interfaces are all connected to the second-type radiant terminal pipeline, wherein the second-type radiant terminal is a ground radiant terminal.

[0018] Furthermore, the ground radiant terminal includes a heating coil, which is laid evenly in a U-shape between the aluminum foil protective layer and the concrete filling layer; the heating coil is connected to the interface pipe of the second type of radiant terminal.

[0019] The technical solution adopted in this utility model has the following technical effects: 1. In order to solve the problems existing in the prior art, this utility model innovatively proposes a modular multi-mode radiant air conditioning system, which can physically integrate multiple components that originally needed to be purchased separately and installed independently, such as the manifold and the control valves of each supply and return water branch, into a standardized shell, reducing the difficulty of design coordination and on-site construction complexity, and improving the maintenance efficiency of components.

[0020] 2. The integrated hydraulic distribution module described in this utility model also includes a sensor installation interface and a control unit interface, which further improves the integration of hydraulic distribution, further reduces the difficulty of design coordination and on-site construction complexity, and improves the maintenance efficiency of components.

[0021] 3. The modular multi-mode radiant air conditioning system described in this utility model also includes a fresh air handling module. The ceiling radiant terminal includes a ceiling panel, a capillary network radiant module, and a fresh air outlet. The central area of ​​the ceiling panel has a circular recessed platform for installing the fresh air outlet. The fresh air outlet is connected to the fresh air outlet pipe of the fresh air unit. The capillary network radiant module is provided inside the ceiling panel and is connected to the interface pipe of the first type of radiant terminal. By combining the fresh air handling module with the ceiling radiant terminal, the ability of the fresh air system to independently handle latent heat load is guaranteed, avoiding the fresh air flow from directly blowing onto the surface of the ceiling radiant panel and interfering with its radiant heat exchange process. This effectively prevents the risk of condensation on the ceiling radiant surface and ensures the health of indoor air.

[0022] 4. The ground radiant terminal in this utility model includes a heating coil, which is laid evenly in a U-shape between the aluminum foil protective layer and the concrete filling layer; the heating coil is connected to the second type of radiant terminal interface pipe, which can adapt to the load requirements of different areas of the building and different seasons, and further improve the comfort experience of the foot area in winter.

[0023] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit the present invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1This is a schematic diagram of the overall structure of the air conditioning system in Embodiment 1 of this utility model. Figure 2 This is a schematic diagram of the internal structure of the fresh air treatment module in Embodiment 1 of this utility model. Figure 3 This is a structural schematic diagram of the air outlet connection method (circular socket interface) of the fresh air treatment module in Embodiment 1 of this utility model; Figure 4 This is a structural schematic diagram of the air outlet connection method (rectangular flange interface) of the fresh air treatment module in Embodiment 1 of this utility model; Figure 5 This is a left-side axonometric view of the internal structure of the integrated hydraulic distribution module in Embodiment 1 of this utility model. Figure 6 This is a right-side axial view of the internal structure of the integrated hydraulic distribution module in Embodiment 1 of this utility model. Figure 7 This is an enlarged structural diagram of the first type of radiating end interface and the second type of radiating end interface inside the integrated hydraulic distribution module in Embodiment 1 of this utility model. Figure 8 This is a schematic diagram of the cross-sectional structure of the ceiling radiator end in Embodiment 1 of this utility model. Figure 9 This is an isometric schematic diagram of the ground radiation terminal structure in Embodiment 1 of this utility model. Figure 10 This is a schematic diagram of the physical connection of the control module in Embodiment 1 of this utility model. Detailed Implementation

[0026] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure of the invention, components and arrangements of specific examples are described below. Furthermore, reference numerals and / or letters may be repeated in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. Descriptions of well-known components, processing techniques, and processes are omitted in this invention to avoid unnecessarily limiting the invention.

[0027] Example 1 The modular, multi-mode radiant integrated air conditioning system described in this embodiment can be applied to a typical open-plan office area in a high-end office building, as well as adjacent independent manager's offices and meeting rooms. The system is designed to improve indoor comfort (including a draft-free environment, uniform temperature, and fresh air).

[0028] like Figure 1 As shown, this utility model provides a modular multi-mode radiant air conditioning system, including: a cold and heat source module 1, an integrated hydraulic distribution module 3, and a multi-mode radiant terminal module 4. The integrated hydraulic distribution module 3 includes a housing 31, a water distribution manifold 32, and a control valve 33. The water distribution manifold 32 is fixed inside the housing 31. The water distribution manifold 32 includes a water distribution main pipe 323 and a water collection main pipe arranged parallel to the water distribution main pipe 323. Multiple parallel supply and return water branches are respectively arranged on the water distribution main pipe 323 and the water collection main pipe 324. Each supply and return water branch... It includes a first type of radiant terminal interface 321 or a second type of radiant terminal interface 322. The control valve 33 is integrated into the supply and return water branch of the water manifold 32 and fixed inside the housing 31. The outlet of the cold and heat source module 1 is connected to the inlet pipe of the water distribution main pipe 323, and the return water of the cold and heat source module 1 is connected to the outlet pipe of the water collection main pipe 324. The multi-mode radiant terminal module 4 includes at least two different types of radiant terminals, and each type of radiant terminal is connected to the first type of radiant terminal interface 321 or the second type of radiant terminal interface 322.

[0029] The heat source module 1 serves as the core of the system's energy supply, acting as the physical device for preparing the heating and cooling media. It encompasses various types, including air-source heat pumps, ground-source heat pumps, gas-fired boilers, and heat exchange units for urban centralized heating / cooling networks. It features standard supply and return water main interfaces (such as flanges or threaded connections) for physical connection to the main pipeline of the integrated hydraulic distribution module 3. The selection of the heat source module 1 must match the radiant system's "high-temperature cooling, low-temperature heating" characteristics; for example, it should stably provide chilled water at 15°C to 19°C in summer and hot water at 30°C to 40°C in winter. Specifically, the heat source module 1 can be a high-efficiency ground-source heat pump unit, physically installed in the building's underground equipment floor. Its structural features include: in summer, it can stably provide 16°C chilled water as a high-temperature cold source; in winter, it can provide 38°C hot water as a low-temperature heat source. The ground-source heat pump unit is designed with a 4°C supply and return water temperature difference to match the small temperature difference and high flow rate operating characteristics of the radiant terminal. The ground source heat pump unit has DN80 flange interfaces on both the outlet and return water inlet structures. The main supply and return water pipes, made of welded steel pipes, extend to each floor and provide energy input for the system in this area. Among them, such as Figure 2 As shown, the modular multi-mode radiant air conditioning system also includes a fresh air handling module 2, which includes a fresh air unit 25 and a chilled / hot water coil 24. The inlet of the chilled / hot water coil 24 of the fresh air unit 25 is connected to the outlet pipe of the cold / heat source module 1, and the outlet of the chilled / hot water coil 24 of the fresh air unit 25 is connected to the return pipe of the cold / heat source module 1.

[0030] Fresh air handling module 2 is responsible for processing outdoor air introduced into the room to ensure indoor air quality. It includes ceiling-mounted or floor-standing total heat exchange fresh air units, air conditioning units, etc. Its internal structure typically includes a fan, filter, heat exchanger (total heat or sensible heat), and possibly auxiliary heating / cooling coils.

[0031] The fresh air handling module 2 uses a cassette-type ceiling-mounted total heat exchange fresh air unit, installed inside the ceiling of the office area. The total heat exchange fresh air unit adopts a compact modular design, including a supply / return air interface 21, a G4+F7 (filter level) dual filter 22, a total heat exchange core 23, chilled / hot water coils 24, a DC brushless EC fresh air fan 25, and a casing 26. Outdoor fresh air enters through the supply / return air interface 21, passes through the G4+F7 dual filter 22 to remove most particulate pollutants, and simultaneously, indoor exhaust air enters through the indoor return air inlet and is also filtered by the G4+F7 dual filter 22. The filtered airflows then enter the total heat exchange core 23 for energy exchange of temperature and humidity (without mixing). The fresh air, after pre-treatment of the return air, is precisely driven by the fresh air fan 25 and sent to the chilled / hot water coils 24 for cooling or heating, before being sent into the room through the fresh air outlet. The indoor exhaust air, having completed energy exchange, is then discharged outdoors by the fan. Outdoor fresh air undergoes four processes in sequence: filtration, energy recovery, power delivery, and precise temperature control. Each module works in concert to achieve efficient and energy-saving ventilation.

[0032] like Figures 3-4 As shown, the supply / return air interface 21 has a specific, standardized interface structure, such as a rectangular flange interface or a circular socket interface, to ensure that the module can make a quick, reliable, and sealed physical connection with the building duct system.

[0033] The chilled / hot water coil 24 of the fresh air unit 25 is connected to the cold / heat source module 1 through the supply and return water pipes. The chilled water or hot water generated by the cold / heat source module 1 is driven by the circulating water pump and transported to the chilled / hot water coil 24 of the fresh air unit through the water supply pipe. When the air flows over the surface of the coil fins, it exchanges heat with the water in the coil to cool or heat the air. After the heat exchange is completed, the water in the coil returns to the cold / heat source module 1 through the return water pipe for further cooling or heating.

[0034] like Figures 5-6As shown, the housing 31 can be made of 1.2mm thick galvanized steel sheet or engineering plastic into a box-shaped structure. Its external dimensions are designed to be 500mm (width) × 400mm (height) × 120mm (depth). It can be installed on the wall of the equipment room in the office area, or it can be embedded in a non-load-bearing wall, wall-mounted, or installed in a pipe shaft. The external dimensions are optimized to fit the standard wall joist spacing, enabling fast and accurate installation. The surface of the housing 31 has pre-set standardized external connection ports, including water interface (through hole for branch / manifold main pipe) and electrical interface (through hole for cable), ensuring seamless connection between the module and external systems. The surface of the housing 31 is treated with electrostatic powder coating, which is beautiful and durable, and it is equipped with a lockable access door.

[0035] Multi-loop manifold 32: As the core framework of the integrated hydraulic distribution module 3, it is firmly installed inside the housing 31 by a special bracket and fixed to the special bracket inside the housing 31. It is formed by one-piece forging of brass. The manifold 32 adopts a parallel layout of upper (distribution main pipe 323) and lower (collection main pipe 324). The main inlet and main return inlet are located on the same side, with DN25 internal thread interface, and are connected to the main water pipe of the floor through PPR pipe. It is composed of a distribution main pipe 323 and a collection main pipe 324 in parallel, and the material is usually corrosion-resistant copper, stainless steel or high-performance composite material. Structurally, it has a main inlet and main return inlet for connecting the cold and heat source module 1. From the distribution main pipe 323 and the collection main pipe 324, multiple parallel supply and return water branches are structurally branched out. These branch interfaces are physically divided into at least two types: the first type of radiant terminal interface 321 and the second type of radiant terminal interface 322. These two types of interfaces have physically distinct structural differences. These differences can be: Different nominal diameters: For example, the first type of radiant terminal interface 321 is DN15, which is suitable for ceiling capillary networks; the second type of radiant terminal interface 322 is DN20, which is suitable for ground coils.

[0036] Different connection methods: for example, such as Figure 7 As shown, the first type of radiating terminal interface 321 is a quick-connect type (tool-free installation); the second type of radiating terminal interface 322 is a threaded type (high-voltage reliable connection).

[0037] Physical identification markings: The interface is equipped with injection-molded color rings, raised geometric markings, or label slots to guide the correct connection from a physical perspective and prevent hydraulic imbalance caused by incorrect connection.

[0038] Integrated control valve 33: Integrated into each supply and return water branch (preferably the water collection pipe side) or main pipe of the water manifold 32, using a switch valve with an electric heating actuator or a 0-10V regulating valve; the valve of the control valve 33 is fixed in the housing 31 by a bracket, and the electrical wiring is led to the control unit interface 35 through the internal wire trough.

[0039] The integrated hydraulic distribution module 3 also includes a sensor mounting interface 34, which is located on the main pipe, supply and return water branch, or housing panel of the manifold 32. The integrated radiant and fresh air air conditioning system also includes an environmental sensing module 5, which is installed on the preset sensor mounting interface 34. The preset sensor mounting interface 34 can be located on preset standard interfaces (such as 1 / 2 NPT threaded holes or sensor slots) on the main pipe, supply and return water branch, or housing panel of the manifold, facilitating quick installation of temperature, pressure, or flow sensors without the need for on-site drilling.

[0040] Furthermore, the integrated hydraulic distribution module 3 also includes a control unit interface 35, which is located at the bottom of the housing 31. The control module 6 is electrically connected to the environmental sensing module 5 and the control valve 33 through the control unit interface 35. The centralized control unit interface 35 can be located on the side or bottom of the housing 31, using a multi-position terminal block, aviation plug, or bus interface module to centrally collect the drive lines and sensor signal lines of all control valves 33 within the housing 31, forming a "single interface" for connection with the control module 6. This simplifies wiring and debugging, provides a physical platform for the access of the control module 6, and enables the control module to uniformly collect data and issue commands.

[0041] In this invention, all hydraulic control components are concentrated within the integrated hydraulic distribution module 3. When a system malfunctions, the scope of troubleshooting for maintenance personnel is greatly reduced. Most critical components can be inspected and replaced simply by opening the module's inspection panel, significantly improving maintenance efficiency. Furthermore, the standardized module and interface design facilitates future system expansion and component replacement.

[0042] Specifically, the water distribution main pipe 323 includes a first water supply branch and a second water supply branch, and the water collection main pipe 324 includes a first return water branch and a second return water branch; the interfaces of the first water supply branch, the second water supply branch, the first return water branch and the second return water branch are all first-type radiant terminal interfaces 321, and the first-type radiant terminal interfaces 321 are all connected to the first-type radiant terminal pipe, wherein the first-type radiant terminal is the ceiling radiant terminal 41.

[0043] like Figure 8 As shown, the ceiling radiant terminal 41 (ceiling radiant unit) includes a ceiling panel (e.g., gypsum board), a capillary network radiant module 413, and a fresh air supply outlet 411 (e.g., a circular diffuser). The central area of ​​the ceiling panel 412 is provided with a circular recessed platform for installing the fresh air supply outlet 411. The fresh air supply outlet 411 is connected to the fresh air outlet duct of the fresh air unit 25. The ceiling panel 412 is provided with a capillary network radiant module 413 inside, and the capillary network radiant module 413 is connected to the first type of radiant terminal interface 321 duct.

[0044] The ceiling-mounted radiant terminal 41 can utilize a metal panel radiant ceiling, characterized by its small water capacity per unit area and fast response speed. It connects to the first-type radiant terminal interface 321 via piping. Some units have pre-set openings or fixed brackets, allowing integration with the fresh air supply outlet 411 (diffuser, slotted vent) into a unified radiant fresh air terminal, optimizing the ceiling layout and airflow organization. The ceiling panel 412 has a 200mm diameter circular recessed platform at its geometric center, providing a pre-positioned mounting base for the fresh air supply outlet 411. Multiple spring clips are pre-set along the edge of the circular recessed platform for easy fixing of the fresh air supply outlet 411. The ceiling panel 412 also contains a capillary network radiant module 413.

[0045] The capillary network radiation module 413 uses prefabricated high-density gypsum board as the base material, and the capillary network (PP-R material, outer diameter 4.3mm) is embedded in the gypsum board. The two ends of the capillary network radiation module 413 are respectively connected to the DN15 quick-connect interface from the integrated hydraulic distribution module 3, namely the first type of radiation end interface 321.

[0046] The neck of the fresh air supply vent 411 is embedded into the pre-reserved circular recessed platform in the panel, securing the vent 411 firmly and saving on-site drilling time while improving drilling accuracy. After installation, the fresh air supply vent 411 integrates seamlessly with the ceiling surface, enhancing the overall aesthetics of the ceiling. The neck of the fresh air supply vent 411 can also be connected to a branch pipe of the fresh air system via an insulated flexible hose, which effectively prevents cold bridging and condensation.

[0047] Among them, the water distribution main pipe 323 includes a third water supply branch and a fourth water supply branch, and the water collection main pipe 324 includes a third return water branch and a fourth return water branch; the interfaces of the third water supply branch, the fourth water supply branch, the third return water branch and the fourth return water branch are all second-type radiant terminal interfaces 322, and the second-type radiant terminal interfaces 322 are all connected to the second-type radiant terminal pipeline, wherein the second-type radiant terminal is a ground radiant terminal 42.

[0048] like Figure 9 As shown, the ground radiant terminal 42 includes a heating coil 421, which is laid evenly in a U-shape between the aluminum foil protective layer and the concrete filling layer; the heating coil 421 is connected to the second type of radiant terminal interface 322 pipe.

[0049] The buried PEX / PERT heating coil 421 has the characteristics of high thermal inertia and strong heat storage capacity. It is connected to the second type of radiant terminal interface 322 through the pipeline, and is adapted to slow response heating needs. It is connected to the corresponding second type of radiant terminal interface 322 on the integrated hydraulic distribution module 3.

[0050] The ground-level radiant terminal 42 complements the ceiling-mounted radiant terminal 41 and is primarily located in separate offices to further enhance comfort in the foot area during winter. This unit uses DN16 heating coils 421, evenly laid in a U-shape between the aluminum foil protective layer and the concrete filler layer. The surface is completely covered by the concrete filler layer. From ground level downwards, the sequence includes the ground layer, concrete filler layer, heating / cooling coils, aluminum foil protective layer, insulation layer, moisture-proof layer, and floor slab. Both ends of the coil loop connect to the DN20 threaded interface on the integrated hydraulic distribution module 3, i.e., the second type of radiant terminal interface 322, via DN20 PPR main pipes and adapters. Specifically, the environmental sensing module 5 may include a surface temperature sensor 51, an air temperature and humidity sensor 52, and a CO2 sensor 53. The surface temperature sensor 51 is installed at each type of radiant terminal, the air temperature and humidity sensor 52 is installed in the return air area of ​​each room, and the CO2 sensor 53 is installed in the interior wall area of ​​the room.

[0051] Specifically, the surface temperature sensor 51 can be installed on different radiant end surfaces using embedded (with blind holes pre-drilled in the radiant plate), back-mounted (adhesive with high thermal conductivity), or integrated into the board. This allows for rapid capture of radiant temperature changes, providing data support for core functions such as anti-condensation control and establishing a reliable physical foundation. In each independent radiant control area (selecting a representative ceiling radiant end 41), a thin-film NTC surface temperature sensor 51 is firmly adhered to the center of the back of the plasterboard using high thermal conductivity two-component epoxy resin. This installation method minimizes the thermal resistance between the sensor and the radiant plate, ensuring accurate and rapid response to changes in the plate's surface temperature.

[0052] Air temperature and humidity sensor 52: can be installed in a representative location of indoor air, such as near the return air vent or on a wall that is not affected by direct sunlight or heat dissipation from equipment; for example, in the return air area of ​​each room, at a standard height of 1.5m from the ground, a pre-embedded 86-type electrical mounting box conforming to GB / T17466 standard is installed to install an air temperature and humidity sensor 52 that integrates high-precision air temperature and humidity measuring elements.

[0053] CO2 sensor 53 can be physically installed in areas with high air quality requirements, such as conference rooms and bedrooms; all sensors are connected to control module 6 via physical signal cables to ensure stable data transmission; for example, in a conference room that can accommodate more than 10 people, a wall-mounted non-dispersive infrared (NDIR) CO2 sensor 53 can be installed on the wall.

[0054] All these sensors are connected to the nearest I / O expansion module via RVVP shielded cables, and then aggregated to the control module 6 for unified data acquisition.

[0055] Preferably, the modular multi-mode radiant air conditioning system further includes a control module 6, the input end of which is communicatively connected to the output end of the environmental sensing module 5, and the output end of the control module 6 is electrically connected to the input end of the control valve.

[0056] like Figure 10 As shown, control module 6 typically consists of one or more hardware controller entities, such as a programmable logic controller (PLC), a direct digital controller (DDC), or a dedicated HVAC controller, connected to each module via wiring. It connects to the control unit interface 35 of the integrated hydraulic distribution module 3 to read sensor data and control valve actions, preferentially using bus communication methods (such as Modbus RTU, BACnetMS / TP), achieving bidirectional data transmission through a single twisted pair cable, reducing wiring and improving anti-interference capabilities. It connects to the control interface of the fresh air handling module 2 to adjust fan speed and auxiliary coil opening; and connects to the environmental sensing module 5 to collect environmental parameters. Control module 6 can use a Siemens S7-1200 series PLC, installed in a dedicated control box in the floor's low-voltage electrical shaft, and equipped with analog input / output (AI / AO) and digital input / output (DI / DO) expansion modules. Its RS485 communication port connects to the RS485 terminal of the integrated hydraulic distribution module 3 via a shielded twisted pair cable, enabling communication with the Modbus RTU bus of the integrated hydraulic distribution module 3. The AO port of control module 6 is physically connected to the 0-10V control interface of fresh air handling module 2 via a signal line, for stepless adjustment of the speed of its fresh air fan 25 (i.e., control of fresh air volume) and the opening of the electric two-way valve of the auxiliary coil. The AI / DI port is connected to all sensors (51, 52, 53) in environmental sensing module 5 via shielded cables. Brief description of the air conditioning system's operation: During summer cooling, control module 6 collects data from environmental sensor 5 in real time via physical wiring. Control module 6 controls cold and heat source module 1 to prepare chilled water, which is then transported to the main inlet of integrated hydraulic distribution module 3 through the main pipe. Simultaneously, it sends commands to integrated hydraulic distribution module 3 via RS485 bus. Control module 6 controls control valves 33 connected to branches with different structural interfaces (321, 322). Fresh air handling module 2 filters, heats, and dehumidifies fresh air through auxiliary coils, outputting clean air at approximately 18°C ​​with low humidity. This air is then distributed through ductwork, with a portion sent to fresh air outlet 411, structurally integrated with ceiling radiant terminals 41, to optimize airflow, handle indoor humidity load, and replenish fresh air. The remaining portion is sent to other air outlets to replenish fresh air. Control module 6 monitors data from surface temperature sensor 51 via physical wiring. When condensation prevention is needed, control module 6 closes the control valve 33 of the corresponding branch via bus commands, thus physically preventing condensation.

[0057] In winter heating mode, the logic is similar to that in summer mode. Control module 6 instructs cold and heat source module 1 to provide 38°C hot water. Control module 6 acquires the temperature monitored by ceiling radiant terminal 41 and floor radiant terminal 42. Fresh air handling module 2 heats the fresh air before sending it into the room.

[0058] This embodiment successfully incorporates two different types of radiant terminals (41, 42) into management through a highly structurally integrated hydraulic distribution module 3 and interfaces (321, 322) with different physical structures, and optimizes the terminal layout through the structural integration of the ceiling radiant terminal 41 and the fresh air supply outlet 411.

[0059] To address the problems existing in the prior art, this utility model innovatively proposes a modular multi-mode radiant air conditioning system. This system can physically integrate multiple components, such as the manifold and control valves of each supply and return water branch, which originally needed to be purchased separately and installed independently, into a standardized housing. This reduces the difficulty of design coordination and on-site construction complexity, and improves the maintenance efficiency of the components.

[0060] The integrated hydraulic distribution module described in this utility model also includes a sensor installation interface and a control unit interface, which further improves the integration of hydraulic distribution, further reduces the difficulty of design coordination and on-site construction complexity, and improves the maintenance efficiency of components.

[0061] The multi-mode radiant integrated air conditioning system described in this utility model also includes a fresh air handling module. The ceiling radiant terminal includes a ceiling panel, a capillary network radiant module, and a fresh air outlet. The central area of ​​the ceiling panel has a circular recessed platform for installing the fresh air outlet. The fresh air outlet is connected to the fresh air outlet pipe of the fresh air unit. The capillary network radiant module is located inside the ceiling panel and is connected to the interface pipe of the first type of radiant terminal. By combining the fresh air handling module with the ceiling radiant terminal, the ability of the fresh air system to independently handle latent heat load is guaranteed. This avoids the fresh airflow directly blowing onto the surface of the ceiling radiant panel, interfering with its radiant heat exchange process, effectively preventing the risk of condensation on the ceiling radiant surface, and ensuring healthy indoor air.

[0062] The ground radiant terminal of this utility model includes a heating coil, which is evenly laid in a U-shape between the aluminum foil protective layer and the concrete filling layer; the heating coil is connected to the interface pipe of the second type of radiant terminal, which can adapt to the load requirements of different areas of the building and different seasons, and further improve the comfort experience of the foot area in winter.

[0063] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A modular multi-mode radiant air conditioning system, characterized in that, include: The system comprises a cold / heat source module (1), an integrated hydraulic distribution module (3), and a multi-mode radiant terminal module (4). The integrated hydraulic distribution module (3) includes a housing (31), a manifold (32), and a control valve (33). The manifold (32) is fixed inside the housing (31). The manifold (32) includes a distribution main pipe (323) and a collection main pipe (324) arranged parallel to the distribution main pipe (323). Multiple parallel supply and return water branches are respectively set on the distribution main pipe (323) and the collection main pipe (324). Each supply and return water branch includes a first-type radiant terminal. The control valve (33) is integrated into the supply and return water branch of the water distribution manifold (32) and fixed inside the housing (31); the outlet of the cold and heat source module (1) is connected to the inlet pipe of the water distribution main pipe (323), and the return water of the cold and heat source module (1) is connected to the outlet pipe of the water collection main pipe (324); the multi-mode radiant terminal module (4) includes at least two different types of radiant terminals, and each type of radiant terminal is connected to the first type of radiant terminal interface (321) or the second type of radiant terminal interface (322).

2. The modular multi-mode radiant air conditioning system according to claim 1, characterized in that, The integrated hydraulic distribution module (3) also includes a sensor installation interface (34), which is located on the main pipe, supply and return water branch or housing panel of the manifold (32); the radiant and fresh air integrated air conditioning system also includes an environmental sensing module (5), which is installed on the preset sensor installation interface (34).

3. A modular multi-mode radiant air conditioning system according to claim 2, characterized in that, The modular multi-mode radiant air conditioning system also includes a control module (6), the input end of which is communicatively connected to the output end of the environmental sensing module (5), and the output end of the control module (6) is electrically connected to the input end of the control valve (33).

4. A modular multi-mode radiant air conditioning system according to claim 3, characterized in that, The environmental sensing module (5) includes a surface temperature sensor (51), an air temperature and humidity sensor (52), and a CO2 sensor (53). The surface temperature sensor (51) is installed at each type of radiant terminal, the air temperature and humidity sensor (52) is installed in the return air area of ​​each room, and the CO2 sensor (53) is installed on the interior wall area of ​​the room.

5. A modular multi-mode radiant air conditioning system according to claim 3, characterized in that, The integrated hydraulic distribution module (3) also includes a control unit interface (35), which is located at the bottom of the housing (31). The control module (6) is electrically connected to the environmental sensing module (5) and the control valve (33) through the control unit interface (35).

6. A modular multi-mode radiant air conditioning system according to claim 1, characterized in that, The modular multi-mode radiant air conditioning system also includes a fresh air handling module (2), which includes a fresh air unit (25) and a cold / hot water coil (24). The inlet of the cold / hot water coil (24) of the fresh air unit (25) is connected to the outlet pipe of the cold / heat source module (1), and the outlet of the cold / hot water coil (24) of the fresh air unit (25) is connected to the return pipe of the cold / heat source module (1).

7. A modular multi-mode radiant air conditioning system according to claim 6, characterized in that, The main water supply pipe (323) includes a first water supply branch and a second water supply branch, and the main water collection pipe (324) includes a first return water branch and a second return water branch; the interfaces of the first water supply branch, the second water supply branch, the first return water branch and the second return water branch are all first-type radiant terminal interfaces (321), and the first-type radiant terminal interfaces (321) are all connected to the first-type radiant terminal pipeline, wherein the first-type radiant terminal is the ceiling radiant terminal (41).

8. A modular multi-mode radiant air conditioning system according to claim 7, characterized in that, The ceiling radiant terminal (41) includes a ceiling panel (412), a capillary network radiant module (413), and a fresh air supply outlet (411). The central area of ​​the ceiling panel (412) is provided with a circular recessed platform for installing the fresh air supply outlet (411). The fresh air supply outlet (411) is connected to the fresh air outlet pipe of the fresh air unit (25). The ceiling panel (412) is provided with a capillary network radiant module (413) inside. The capillary network radiant module (413) is connected to the pipe of the first type of radiant terminal interface (321).

9. A modular multi-mode radiant air conditioning system according to claim 7, characterized in that, The main water supply pipe (323) includes the third water supply branch and the fourth water supply branch, and the main water collection pipe (324) includes the third return water branch and the fourth return water branch; the interfaces of the third water supply branch, the fourth water supply branch, the third return water branch and the fourth return water branch are all second-class radiant terminal interfaces (322), and the second-class radiant terminal interfaces (322) are all connected to the second-class radiant terminal pipeline, wherein the second-class radiant terminal is the ground radiant terminal (42).

10. A modular multi-mode radiant air conditioning system according to claim 9, characterized in that, The ground radiant terminal (42) includes a heating coil (421), which is laid evenly in a U-shape between the aluminum foil protective layer and the concrete filling layer; the heating coil (421) is connected to the second type of radiant terminal interface (322) pipe.

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