Building environment regulation and control system

Abstract

The utility model provides a building environment regulation and control system, a multi-radiation tail end unit comprises a top plate radiation tail end module, a wall surface radiation tail end module and a floor radiation tail end module, a heat pump unit comprises a buffer water tank and a heat pump host, and a primary side water return pipeline between the buffer water tank and the heat pump host is provided with a three-way switching valve; on one hand, a multi-dimensional and large-area radiation heat exchange network structure is formed by integrating the top plate, the wall and the ground, an extremely uniform, stable and dead-corner-free indoor temperature field can be built, the problems that a traditional convection air conditioner is not uniform in cold and heat and air blowing feelings exist are solved, and the problem that application of a single radiation surface is limited is solved; and on the other hand, the sky radiation refrigeration unit is integrated, so that the sky radiation refrigeration unit can be switched with the radiation heat exchange network structure, free cold sources in nature are utilized, a heat pump can be greatly replaced or assisted for refrigeration under proper meteorological conditions, and the energy consumption of building regulation and control in the refrigeration season is reduced.

Description

A building environment control system Technical Field

[0001] This utility model relates to the field of building energy conservation and heating, ventilation and air conditioning, and in particular to a building environment control system. Background Technology

[0002] The demand for "good houses" in today's society is growing, requiring not only superior building performance but also ultimate comfort, health, and ultra-low energy consumption in the indoor environment. However, traditional air conditioning systems, such as split-type units or fan coil units that rely on air convection, often affect comfort due to issues like drafts, uneven temperature, and dry air. Furthermore, there is room for improvement in energy efficiency, making it difficult to fully meet the high standards of the new era.

[0003] To improve comfort, radiant heating (such as underfloor heating) and cooling (such as ceiling radiant heating) technologies have been applied, enhancing the experience by simulating natural heat exchange. However, the application of a single radiant surface has limitations, such as the slow response of underfloor heating and the susceptibility of ceiling radiant heating to condensation. On the other hand, passive cooling technologies, such as sky radiant cooling, although already used in buildings, have not been effectively coordinated with radiant heat exchange in HVAC systems, resulting in still relatively high building energy consumption.

[0004] Therefore, existing technologies have significant shortcomings at the system integration level: the application of a single radiant surface is limited, or the sky radiant cooling and radiant heat exchange in the HVAC system are not effectively coordinated, resulting in still high building energy consumption. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model innovatively proposes a building environment control system. On the one hand, by integrating the ceiling, walls, and floor to form a multi-dimensional, large-area radiative heat exchange network structure, it can create an extremely uniform, stable, and dead-angle-free indoor temperature field, avoiding the uneven heating and cooling and drafty feeling of traditional convection air conditioning. On the other hand, it integrates a sky radiative cooling unit, which can switch between the radiative heat exchange network structure and cleverly utilize the free cold source in nature. Under suitable meteorological conditions, it can significantly replace or assist heat pump cooling, reducing the energy consumption of building control during the cooling season.

[0006] The first aspect of this utility model provides a building environment control system, comprising: a multi-radiation terminal unit, a heat pump unit, a sky radiant cooling unit, and an intelligent control unit. The multi-radiation terminal unit includes a ceiling radiant terminal module, a wall radiant terminal module, and a floor radiant terminal module. The heat pump unit includes a buffer water tank and a heat pump unit. The water supply terminals of the ceiling, wall, and floor radiant terminal modules are each connected to the water supply pipeline on the secondary side of the buffer water tank. The return water terminals of the ceiling, wall, and floor radiant terminal modules are each connected to the water supply pipeline on the secondary side of the buffer water tank. The return water pipeline is connected as follows: one outlet of the primary side of the buffer water tank is connected to the inlet pipeline of the heat pump host, and the other outlet pipeline is connected to the inlet pipeline of the sky radiation cooling unit; a three-way switching valve is installed on the primary side return water pipeline between the buffer water tank and the heat pump host, one end of the three-way switching valve is connected to the primary side inlet pipeline of the buffer water tank, one end is connected to the outlet pipeline of the heat pump host, and the other end is connected to the outlet pipeline of the sky radiation cooling unit; the data communication terminal of the intelligent control unit is connected to the data communication terminal of the heat pump host, and the control output terminal of the intelligent control unit is electrically connected to the switching control terminal of the three-way switching valve.

[0007] Optionally, it also includes a fresh air unit, which includes a fresh air handling unit. Inside the fresh air handling unit, along the airflow direction, are arranged sequentially an outdoor fresh air intake for introducing outdoor fresh air into the unit, a filter for filtering the outdoor fresh air, a total heat exchange core for energy exchange between the filtered fresh air and exhaust air, a humidity control module for dehumidifying the energy-exchanged fresh air, a supply fan for delivering the dehumidified fresh air into the room, and an indoor supply duct. The end of the indoor supply duct is provided with an indoor supply vent located at the top of the building. The fresh air handling unit also includes an exhaust fan for expelling indoor stale air to the outside. The end of the exhaust fan is connected to an indoor exhaust duct, and the end of the indoor exhaust duct is provided with an outdoor exhaust vent.

[0008] Optionally, the multi-radiant terminal unit includes a water distributor and a water collector. The inlet of the water distributor is connected to the secondary side water supply pipeline of the buffer tank, and the outlet of the water distributor is connected to the water supply pipelines of the ceiling radiant terminal module, the wall radiant terminal module, and the floor radiant terminal module, respectively. The outlet of the water collector is connected to the secondary side return pipeline of the buffer tank, and the inlet of the water distributor is connected to the return pipelines of the ceiling radiant terminal module, the wall radiant terminal module, and the floor radiant terminal module, respectively. The multi-radiant terminal unit includes a floor water supply shut-off valve, a floor return water shut-off valve, a ceiling water supply shut-off valve, a ceiling return water shut-off valve, a wall water supply shut-off valve, and a wall return water shut-off valve. The floor water supply shut-off valve is located between the water distributor and the floor. The water supply pipeline between the radiant terminal modules includes a floor return water shut-off valve located in the return water pipeline between the distributor and the floor radiant terminal module; a ceiling water supply shut-off valve located in the water supply pipeline between the distributor and the ceiling / floor radiant terminal module; a ceiling return water shut-off valve located in the return water pipeline between the distributor and the ceiling radiant terminal module; a wall water supply shut-off valve located in the water supply pipeline between the distributor and the wall radiant terminal module; and a wall return water shut-off valve located in the return water pipeline between the distributor and the wall radiant terminal module. The control terminals of the floor water supply shut-off valve, floor return water shut-off valve, ceiling water supply shut-off valve, ceiling return water shut-off valve, wall water supply shut-off valve, and wall return water shut-off valve are electrically connected to the control output terminal of the intelligent control unit.

[0009] Furthermore, the floor radiant terminal module includes a floor radiant panel, which, from bottom to top, includes a load-bearing floor slab layer, a first insulation layer to prevent heat from being transferred downwards, a leveling layer with embedded floor radiant water pipes, a moisture-proof layer to isolate the floor radiant water pipes from the indoor humid environment, and a floor decoration layer to protect the floor radiant water pipes.

[0010] The top radiant terminal module includes a top radiant panel, which, from bottom to top, includes a first decorative layer for protecting the top structure, a first gypsum board for bearing weight, and a second heat insulation layer for reducing the transfer of indoor heat to the outside through the ceiling. The first gypsum board includes a first heat-conducting layer and a top radiant water pipe embedded in the first heat-conducting layer.

[0011] The wall-mounted radiant terminal module includes a wall-mounted radiant panel, which, from the outside to the inside, includes a second finishing layer for protecting the internal structure, a second gypsum board for bearing the weight, and a third insulation layer for reducing the transfer of indoor heat to the outside through the wall. The second gypsum board includes a second heat-conducting layer and a wall-mounted radiant water pipe embedded in the second heat-conducting layer.

[0012] Optionally, a heat pump supply shut-off valve is installed at the outlet of the heat pump unit to regulate the flow of water from the heat pump unit to the buffer water tank; a heat pump supply shut-off valve is installed at the inlet of the heat pump unit to regulate the flow of water from the buffer water tank to the heat pump unit; a first circulating water pump is installed at the outlet of the buffer water tank to provide power to the pipeline from the buffer water tank to the heat pump unit; a Y-type filter is installed at the suction inlet of the first circulating water pump to prevent impurities from entering; and a check valve is installed at the outlet of the first circulating water pump to prevent the pump from reversing.

[0013] Optionally, the sky radiant cooling unit includes a sky radiant cooling plate and a heat exchanger. The sky radiant cooling plate, from bottom to top, includes a sealed metal frame and a windproof glass cover. A cavity is formed inside the metal frame. The bottom layer of the cavity includes a fourth insulation layer to prevent cold energy loss to the roof. The top of the cavity includes a radiant cooling film layer. A cooling water pipe is laid between the fourth insulation layer and the radiant cooling film layer. The supply end of the cooling water pipe is connected to the inlet pipe on the primary side of the heat exchanger, and the return end of the cooling water pipe is connected to the return pipe on the primary side of the heat exchanger. One inlet of the heat exchanger's secondary side is connected to the outlet pipe on the primary side of the buffer tank, and the other is connected to the inlet pipe of the heat pump unit. One outlet of the heat exchanger's secondary side is connected to the inlet pipe on the primary side of the buffer tank, and the other is connected to the outlet pipe of the heat pump unit.

[0014] Furthermore, the sky radiation cooling unit also includes a primary circulation water supply shut-off valve, a primary circulation water return shut-off valve, a second circulation water pump, a secondary circulation water supply shut-off valve, and a secondary circulation water return shut-off valve. The primary circulation water supply shut-off valve is installed in the primary water supply pipeline of the heat exchanger, the primary circulation water return shut-off valve is installed in the primary water return pipeline of the heat exchanger, the second circulation water pump is installed in the primary water return pipeline of the heat exchanger, the secondary circulation water supply shut-off valve is installed in the secondary water supply pipeline of the heat exchanger, and the secondary circulation water return shut-off valve is installed in the secondary water return pipeline of the heat exchanger. The control terminals of the primary circulation water supply shut-off valve, the primary circulation water return shut-off valve, the second circulation water pump, the secondary circulation water supply shut-off valve, and the secondary circulation water return shut-off valve are electrically connected to the control output terminal of the intelligent control unit.

[0015] Optionally, the building environment control system further includes a photovoltaic unit and a building distribution box. The photovoltaic unit includes a photovoltaic panel and a photovoltaic inverter. The DC output terminal of the photovoltaic panel is electrically connected to the DC input terminal of the photovoltaic inverter. The AC output terminal of the photovoltaic inverter is electrically connected to the building distribution box. The power output terminal of the building distribution box is electrically connected to the power input terminal of the heat pump host.

[0016] Furthermore, the building environment control system also includes an energy storage unit, which includes a battery pack and an energy storage inverter. The AC input terminal of the energy storage inverter is electrically connected to the DC output terminal of the photovoltaic inverter, and the DC output terminal of the energy storage inverter is electrically connected to the DC input terminal of the battery pack.

[0017] Furthermore, the intelligent control unit includes a controller, and the energy storage unit further includes an energy storage controller, with the data communication terminal of the controller communicating with the data communication terminal of the energy storage controller.

[0018] The technical solution adopted in this utility model has the following technical effects:

[0019] To address the problems existing in the prior art, this utility model innovatively proposes a building environment control system. On the one hand, by integrating the ceiling, walls, and floor to form a multi-dimensional, large-area radiative heat exchange network structure, it can create an extremely uniform, stable, and dead-angle-free indoor temperature field, avoiding the uneven heating and cooling and drafty feeling of traditional convection air conditioning, and solving the problem of limitations in the application of a single radiant surface. On the other hand, it integrates a sky radiant cooling unit, which can switch between the sky radiant cooling unit and the radiative heat exchange network structure, cleverly utilizing the free cold source in nature. Under suitable meteorological conditions, it can significantly replace or assist heat pump cooling, reducing the energy consumption of building control during the cooling season, and solving the problem of high building control energy consumption caused by the uncoordinated application of the sky radiant cooling unit and radiative heat exchange.

[0020] In this utility model's technical solution, the fresh air unit is structurally independent of the radiant terminal unit, possessing its own dedicated air intake and exhaust ducts and fresh air handling unit. This separation design offers significant advantages. The fresh air handling unit integrates components such as a total heat exchanger, humidity control module, exhaust fan, supply fan, and filter, forming a complete fresh air treatment system. This design physically separates the latent heat regulation and ventilation functions of the fresh air treatment process from the indoor sensible heat regulation function undertaken by the radiant terminal unit. The fresh air handling unit primarily handles the latent heat and humidity of the fresh air. The total heat exchanger recovers energy during fresh air introduction, reducing heat loss; the humidity control module precisely adjusts the fresh air humidity according to indoor humidity requirements, achieving latent heat regulation and ventilation. The radiant terminal unit, on the other hand, focuses on indoor sensible heat regulation, adjusting indoor temperature through radiant water pipes embedded in the building surface. Both functions operate independently without interference, achieving independent control of indoor temperature and humidity, effectively improving indoor environmental comfort while reducing energy consumption.

[0021] The building environment control system of this utility model also includes a photovoltaic unit, a building distribution box, and an energy storage unit. The DC output terminal of the photovoltaic panel is electrically connected to the DC input terminal of the photovoltaic inverter, the AC output terminal of the photovoltaic inverter is electrically connected to the building distribution box, and the power output terminal of the building distribution box is electrically connected to the power input terminal of the heat pump host. The energy storage unit includes a battery pack and an energy storage inverter. The AC input terminal of the energy storage inverter is electrically connected to the DC output terminal of the photovoltaic inverter, and the DC output terminal of the energy storage inverter is electrically connected to the AC input terminal of the battery pack, realizing photovoltaic power supply and storage of excess electrical energy, further reducing the energy consumption of building environment control.

[0022] 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

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model 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.

[0024] Figure 1 is a structural schematic diagram of the system in Embodiment 1 of this utility model;

[0025] Figure 2 is a schematic diagram of the structure of the multi-radiating terminal unit in the first embodiment of the present invention.

[0026] Figure 3 is a schematic diagram of the structure of the radiant floor in the first embodiment of the present invention.

[0027] Figure 4 is a schematic diagram of the structure of the radiating top plate in the first embodiment of the present invention.

[0028] Figure 5 is a schematic diagram of the wall-mounted radiant panel in the system of Embodiment 1 of this utility model;

[0029] Figure 6 is a schematic diagram of the sky radiation cooling plate in the system of Embodiment 1 of this utility model;

[0030] Figure 7 is a schematic diagram of the fresh air unit in the first embodiment of this utility model.

[0031] In the diagram: 101. Floor radiant water pipe; 102. Floor water supply shut-off valve; 103. Floor water return shut-off valve; 104. Ceiling radiant panel; 105. Ceiling water supply shut-off valve; 106. Ceiling water return shut-off valve; 107. Wall radiant panel; 108. Wall water supply shut-off valve; 109. Wall water return shut-off valve; 110. Manifold; 111. Water collector; 112. Floor finish layer; 113. Moisture-proof layer; 114. Leveling layer; 115. First insulation layer; 116. Floor slab; 117. Second... Insulation layer; 118. First gypsum board; 119. First finishing layer; 120. Ceiling radiant water pipe; 121. Wall radiant water pipe; 122. First heat-conducting layer; 123. Second finishing layer; 124. Second gypsum board; 125. Third insulation layer; 126. Second heat-conducting layer; 201. Fresh air unit; 202. Outdoor fresh air intake; 203. Outdoor exhaust vent; 204. Indoor supply air duct; 205. Indoor exhaust air duct; 206. Indoor supply air vent; 207. Indoor return air vent; 208. Filter unit; 209, Total heat exchange core; 210, Humidity control module; 211, Air blower; 212, Exhaust fan; 301, Heat pump main unit; 302, Heat pump water supply shut-off valve; 303, Heat pump water return shut-off valve; 304, First circulating water pump; 305, Check valve; 306, Buffer water tank; 307, Y-type filter; 401, Sky radiation cooling plate; 402, Second circulating water pump; 403, Primary circulation water supply shut-off valve; 404, Primary circulation water return shut-off valve; 405, Heat exchanger; 4 06. Secondary circulation water supply shut-off valve; 407. Secondary circulation water return shut-off valve; 408. Three-way switching valve; 409. Glass cover plate; 410. Radiant cooling film layer; 411. Cooling water pipe; 412. Fourth insulation layer; 413. Metal frame; 501. Photovoltaic panel; 502. Photovoltaic inverter (inverter in Figure 1); 601. Battery pack; 602. Energy storage inverter (PCS in Figure 1); 603. Energy storage controller (BMS in Figure 1); 7. Controller; 8. Building distribution box. Detailed Implementation

[0032] To clearly illustrate the technical features of this solution, the present 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 present invention. To simplify the disclosure of the present 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 and processing techniques and processes are omitted to avoid unnecessarily limiting the present invention.

[0033] Example 1

[0034] As shown in Figure 1, this utility model provides a building environment control system, including: a multi-radiation terminal unit, a heat pump unit, a sky radiant cooling unit, and an intelligent control unit. The multi-radiation terminal unit includes a ceiling radiant terminal module, a wall radiant terminal module, and a floor radiant terminal module. The heat pump unit includes a buffer water tank 306 and a heat pump host 301. The water supply terminals of the ceiling radiant terminal module, the wall radiant terminal module, and the floor radiant terminal module are all connected to the water supply terminal pipeline on the secondary side of the buffer water tank 306, and the water return terminals of the ceiling radiant terminal module, the wall radiant terminal module, and the floor radiant terminal module are all connected to the water return terminal pipeline on the secondary side of the buffer water tank 306. One outlet of the primary side of the buffer water tank 306 is connected to the inlet pipe of the heat pump host 301, and the other outlet is connected to the inlet pipe of the sky radiation cooling unit. A three-way switching valve 408 is installed on the primary side return water pipe between the buffer water tank 306 and the heat pump host 301. One outlet of the three-way switching valve 408 is connected to the inlet pipe of the primary side of the buffer water tank 306, one outlet pipe of the heat pump host 301, and the other outlet pipe of the sky radiation cooling unit. The data communication terminal of the intelligent control unit is connected to the data communication terminal of the heat pump host 301, and the control output terminal of the intelligent control unit is electrically connected to the switching control terminal of the three-way switching valve 408.

[0035] As shown in Figure 2, the multi-radiation terminal unit includes a water distributor 110 and a water collector 111. The inlet of the water distributor 110 is connected to the water supply pipeline on the secondary side of the buffer tank 306 (the side of the buffer tank that is connected to the ceiling radiation terminal module, wall radiation terminal module, and floor radiation terminal module respectively). The outlet of the water distributor 110 is connected to the water supply pipelines of the ceiling radiation terminal module, wall radiation terminal module, and floor radiation terminal module respectively. The outlet of the water collector 111 is connected to the return pipeline on the secondary side of the buffer tank 306, and the inlet of the water distributor 110 is connected to the return pipelines of the ceiling radiation terminal module, wall radiation terminal module, and floor radiation terminal module respectively. The multi-radiation terminal unit includes a floor water supply shut-off valve 102, a floor return water shut-off valve 103, a ceiling water supply shut-off valve 105, a ceiling return water shut-off valve 106, a wall water supply shut-off valve 108, and a wall return water shut-off valve 109. A shut-off valve 102 is installed in the water supply pipeline between the water distributor 110 and the floor radiant terminal module; a floor return shut-off valve 103 is installed in the return pipeline between the water distributor 110 and the floor radiant terminal module; a ceiling water supply shut-off valve 105 is installed in the water supply pipeline between the water distributor 110 and the ceiling-floor radiant terminal module; a ceiling return shut-off valve 106 is installed in the return pipeline between the water distributor 110 and the ceiling radiant terminal module; a wall water supply shut-off valve 108 is installed in the water supply pipeline between the water distributor 110 and the wall radiant terminal module; and a wall return shut-off valve 109 is installed in the return pipeline between the water distributor 110 and the wall radiant terminal module. The control terminals of the floor water supply shut-off valve 102, floor return shut-off valve 103, ceiling water supply shut-off valve 105, ceiling return shut-off valve 106, wall water supply shut-off valve 108, and wall return shut-off valve 109 are electrically connected to the control output terminal of the intelligent control unit (controller). Floor water supply shut-off valve 102, floor water return shut-off valve 103, ceiling water supply shut-off valve 105, ceiling water return shut-off valve 106, wall water supply shut-off valve 108, and wall water return shut-off valve 109 are all electrically operated shut-off valves. Each branch or area can be independently adjusted by valves controlled by an electric thermal actuator. The entire radiant network constitutes a closed system with low flow velocity and low head loss, and its main supply and return water pipes are connected to the core of the cold and heat source.

[0036] As shown in Figure 3, the floor radiant terminal module includes a floor radiant panel (not shown in the figure). The floor radiant panel includes, from bottom to top, a load-bearing floor slab layer 116, a first heat insulation layer 115 to prevent heat from being transferred downwards, a leveling layer 114 with floor radiant water pipes 101 embedded in it, a moisture-proof layer 113 to isolate the floor radiant water pipes 101 from the indoor humid environment, and a floor decoration layer 112 to protect the floor radiant water pipes 101.

[0037] The floor radiant water pipes 101 can be conventional PEX or PERT underfloor heating / cooling coils. Because of the load-bearing requirements of the floor radiant system, the floor radiant panels differ in construction from the ceiling and wall radiant panels. The bottom layer is the floor slab 116, which bears the load. Above the floor slab is the first insulation layer 115, which prevents heat from being transferred downwards and ensures indoor thermal comfort. The next layer is the leveling layer 114, which contains the radiant water pipes 101. Above the leveling layer is the moisture-proof layer 113, which protects the radiant water pipes. The top layer is the floor decoration layer 112.

[0038] As shown in Figure 4, the ceiling radiant panel 104 includes, from bottom to top, a first decorative layer 119 for protecting the top structure, a first gypsum board 118 for bearing the weight, and a second heat insulation layer 117 for reducing the transfer of indoor heat to the outside through the ceiling. The first gypsum board 118 includes a first heat-conducting layer 122 and a ceiling radiant water pipe 120 embedded in the first heat-conducting layer 122.

[0039] Unlike floor radiant panels, ceiling radiant panels 104 and wall radiant panels 107 use boards with certain strength and rigidity as the base layer of the radiant ceiling panel. The first gypsum board 118 used in this utility model only needs to bear the installation load from above and its own weight to ensure the overall stability of the ceiling radiant panel. A first heat-conducting layer 122 composed of aluminum heat-conducting profiles is bonded inside the first gypsum board 118 using a special adhesive. The top of the aluminum heat-conducting profile is arc-shaped, and the ceiling radiant water pipe 120 is embedded in the aluminum heat-conducting profile. The aluminum heat-conducting profile can make the temperature of the ceiling panel more uniform. A second heat-insulating layer 117 composed of heat-insulating material is used above the base layer to reduce the transfer of indoor heat to the outside through the ceiling and can also play a certain role in sound insulation and noise reduction. The outermost layer of the radiant ceiling panel is the first decorative layer 119, which mainly serves a decorative function and can also protect the upper structure.

[0040] As shown in Figure 5, the wall radiant panel 107 includes, from the outside to the inside, a second decorative layer 123 for protecting the internal structure, a second gypsum board 124 for bearing the weight, and a third heat insulation layer 125 for reducing the transfer of indoor heat to the outside through the wall. The second gypsum board 124 includes a second heat-conducting layer 126 and a wall radiant water pipe 121 embedded in the second heat-conducting layer 126.

[0041] Unlike floor radiant panels, wall radiant panels 107 use a base layer of board with a certain strength and rigidity. The second gypsum board 124 used in this invention needs to bear its own weight to ensure the overall stability of the wall radiant panel. A second heat-conducting layer 126 made of aluminum heat-conducting profile is bonded inside the second gypsum board 124 with a special adhesive. The top of the aluminum heat-conducting profile is arc-shaped, and the wall radiant water pipe 121 is embedded in the aluminum heat-conducting profile. The aluminum heat-conducting profile can make the temperature of the ceiling panel more uniform. A third heat insulation layer 125 made of heat-insulating material is used on top of the base layer to reduce the transfer of indoor heat to the outside through the wall and can also play a certain role in sound insulation and noise reduction. The outermost layer of the wall radiant panel 107 is the second decorative layer 123, which mainly serves a decorative purpose and can also protect the internal structure.

[0042] Among them, a heat pump return water shut-off valve 302 is installed at the outlet of the heat pump host 301 to regulate the water flow in the return water pipeline of the heat pump host 301; a heat pump supply water shut-off valve 303 is installed at the inlet of the heat pump host 301 to regulate the water flow in the inlet pipeline of the heat pump host 301; a first circulating water pump 304 (unit circulating pump) is installed at the outlet of the buffer water tank 306 to provide power for the water supply pipeline between the buffer water tank 306 and the heat pump host 301; a Y-type filter 307 is installed at the suction inlet of the first circulating water pump 304 to prevent impurities from entering; and a check valve 305 is installed at the outlet of the first circulating water pump 304 to prevent the pump from reversing.

[0043] The heat pump unit 301 (heat pump unit) can be a variable frequency air source heat pump unit, whose water side is connected to a vertical buffer water tank 306 to form a primary circulation pipeline. The outlet of the heat pump unit 301 is equipped with a heat pump water supply shut-off valve 302 (a shut-off valve on the water supply pipeline from the heat pump unit to the radiant terminal, hence the name heat pump water supply shut-off valve. Its function is to cut off the flow in the pipeline when a system problem occurs, facilitating maintenance. Therefore, it is placed at the outlet of the heat pump unit, supplying water directly to the buffer tank, and then to the radiant terminal). The inlet of the heat pump unit 301 is equipped with a heat pump return water shut-off valve 303 (a shut-off valve on the return water pipeline from the radiant terminal to the heat pump unit, hence the name heat pump return water shut-off valve. Its function is to cut off the flow in the pipeline when a system problem occurs, facilitating maintenance. Therefore, it is placed at the inlet of the heat pump unit, supplying water from the buffer tank to the heat pump unit). These valves can easily cut off the water flow during system maintenance, repair, or malfunction, facilitating the isolation of local pipelines from the system, and enabling maintenance and adjustment of water flow. A first circulating water pump 304 is installed at the outlet of the buffer water tank 306 to ensure the normal operation of the entire pipeline. A Y-type filter 307 is installed at the inlet of the circulating water pump to prevent impurities from entering the water pump and heat pump unit, ensuring the normal operation of the system. A check valve 305 is installed at the outlet of the circulating water pump to prevent backflow of water when the system stops, avoiding water pump reverse rotation and water hammer, thus protecting the water pump. The buffer water tank 306 not only stabilizes the water supply temperature and reduces the start-up and shutdown of the heat pump unit, protecting the terminal and main unit, but also serves as a multi-energy collection point in the structure (switching between radiant terminal units and sky radiant cooling units).

[0044] As shown in Figure 6, the sky radiation cooling unit includes a sky radiation cooling plate 401 and a heat exchanger 405 (plate heat exchanger). The sky radiation cooling plate 401, from bottom to top, includes a sealed metal frame 413 and a windproof glass cover 409. The metal frame 413 forms a concave cavity. The bottom layer of the concave cavity includes a fourth insulation layer 412 to prevent cold air loss to the roof. The top layer of the concave cavity includes a radiation cooling film layer 410 (composed of existing radiation cooling film materials). A cooling water pipe 411 is laid between the fourth insulation layer 412 and the radiation cooling film layer 410. The water supply end of the cooling water pipe 411 is connected to the inlet pipe of the primary side of the heat exchanger 405 (the side connected to the sky radiation cooling plate), and the return end of the cooling water pipe 411 is connected to the return pipe of the primary side of the heat exchanger 405. One inlet of the secondary side of the heat exchanger 405 (the side connected to the buffer water tank and the heat pump host) is connected to the outlet pipe of the primary side of the buffer water tank 306, and the other is connected to the inlet pipe of the heat pump host 301. One outlet of the secondary side of the heat exchanger 405 is connected to the inlet pipe of the primary side of the buffer water tank 306, and the other is connected to the outlet pipe of the heat pump host 301.

[0045] Furthermore, the sky radiation cooling unit also includes a primary circulation water supply shut-off valve 403, a primary circulation water return shut-off valve 404, a second circulation water pump 402 (primary circulation water return pump), a secondary circulation water supply shut-off valve 406, and a secondary circulation water return shut-off valve 407. The primary circulation water supply shut-off valve 403 is installed in the primary water supply pipeline of the heat exchanger 405, the primary circulation water return shut-off valve 404 is installed in the primary water return pipeline of the heat exchanger 405, the second circulation water pump 402 is installed in the primary water return pipeline of the heat exchanger 405, the secondary circulation water supply shut-off valve 406 is installed in the secondary water supply pipeline of the heat exchanger 405, and the secondary circulation water return shut-off valve 407 is installed in the secondary water return pipeline of the heat exchanger 405. The control terminals of the primary circulation water supply shut-off valve 403, the primary circulation water return shut-off valve 404, the second circulation water pump 402, the secondary circulation water supply shut-off valve 406, and the secondary circulation water return shut-off valve 407 are electrically connected to the control output terminal of the intelligent control unit.

[0046] The main body of the sky radiant cooling panel is a sealed metal frame 413 with a windproof glass cover 409 on top. The metal frame 413 forms a concave cavity, and a fourth insulation layer 412 made of insulation material is laid at the bottom to prevent the cold energy from being lost to the roof. A sealed cavity is formed between the insulation material layer 412 and the radiant cooling film layer 410. Cooling water pipes 411 are laid in the sealed cavity. The cold energy generated by the radiant cooling film layer 410 enters the heat exchanger 405 through the water in the cooling water pipes 411, exchanges heat with the secondary side water flow, and then flows back into the radiant panel. The primary water supply pipeline of the sky radiant cooling unit is equipped with a primary circulation water supply stop valve 403, the primary return water pipeline is equipped with a primary circulation return water stop valve 404 and a second circulation water pump 402, the secondary water supply pipeline is equipped with a secondary circulation water supply stop valve 406, and the secondary return water pipeline is equipped with a secondary circulation return water stop valve 407. The secondary side of the heat exchanger (405) is directly connected in parallel to the supply and return water interfaces of the buffer water tank (306). The controller (7) determines whether the sky cooling source structure is put into use and how it is connected to the main system (e.g., precooling return water only, or directly supplying cooling to the water tank) by controlling the start and stop of the second circulating water pump (402) and / or a three-way switching valve 408.

[0047] As shown in Figure 7, a building environment control system may further include a fresh air unit, which includes a fresh air handling unit 201. Inside the fresh air handling unit 201, along the airflow direction, are arranged sequentially an outdoor fresh air inlet 203 for introducing outdoor fresh air into the fresh air handling unit 201, a filter device 208 for filtering outdoor fresh air, a total heat exchange core 209 for energy exchange between the filtered fresh air and exhaust air, a humidity control module 210 for humidity control of the energy-exchanged fresh air, a supply fan 211 for delivering dehumidified fresh air into the room, and an indoor supply air duct 204. The end of the indoor supply air duct 204 is provided with an indoor supply air outlet 206 located at the top of the building room. The fresh air handling unit 201 also includes an exhaust fan 212 for expelling indoor stale air to the outside. The end of the exhaust fan 212 is connected to an indoor exhaust air duct 205. The front end of the indoor exhaust air duct 205 is provided with an indoor return air outlet 207, and the end of the indoor exhaust air duct 205 is provided with an outdoor exhaust air outlet 203.

[0048] The fresh air unit uses an integrated design, the fresh air handling unit 201, which compactly integrates an exhaust fan 212, a filter device 208 (a filter screen can be selected), a total heat exchange core 209 (total heat exchanger), a humidity control module 210 based on a small compressor refrigeration cycle (an existing humidity control module is sufficient as long as it can achieve humidity control), and a supply fan 211. It actively dehumidifies in summer and provides auxiliary humidification in winter. Outdoor fresh air enters the unit through the fresh air intake 203, is filtered by a high-efficiency filter, exchanges energy with the exhaust air through the total heat exchange core 209, then flows through the humidity control module 210 for humidity treatment, and finally is delivered to the top of the room at a low wind speed of less than 0.5 m / s by a low-noise supply fan through the indoor air supply duct 204. Stale indoor air is drawn in by the exhaust fan 212, discharged through the indoor exhaust duct 205, and finally discharged from the outdoor exhaust outlet 202 of the fresh air handling unit. Independent Temperature and Humidity Control (THIC) Fresh Air Unit: This unit is structurally independent of the radiant terminal unit, possessing its own dedicated air intake and exhaust ducts and fresh air handling unit 201. This separate design offers significant advantages. The fresh air handling unit 201 integrates a complete fresh air treatment system. It physically separates the latent heat regulation and ventilation functions during fresh air treatment from the sensible heat regulation function undertaken by the radiant terminal unit. In terms of heating, the fresh air handling unit 201 primarily handles the latent heat and humidity of the fresh air. The total heat exchange core 209 recovers energy during fresh air introduction, reducing heat loss; the humidity control module 210 adjusts the fresh air humidity according to indoor humidity requirements, achieving latent heat regulation and ventilation. The radiant terminal unit, on the other hand, regulates indoor sensible heat through radiant water pipes embedded in the building surface. Both functions operate independently without interference, yet through reasonable system coordination, they achieve independent control of indoor temperature and humidity, effectively improving indoor environmental comfort while reducing energy consumption.

[0049] Preferably, the building environment control system further includes a photovoltaic unit and a building distribution box 8. The photovoltaic unit includes a photovoltaic panel 501 and a photovoltaic inverter 502 (hereinafter referred to as the inverter). The DC output terminal of the photovoltaic panel 501 is electrically connected to the DC input terminal of the photovoltaic inverter 502 (the photovoltaic panel array is connected to the photovoltaic inverter through the controller 7). The AC output terminal of the photovoltaic inverter 502 is electrically connected to the building distribution box 8. The power output terminal of the building distribution box 8 is electrically connected to the power input terminal of the heat pump host 301.

[0050] The building environment control system also includes an energy storage unit, which comprises a battery pack 601 (lithium iron phosphate battery pack) and an energy storage inverter 602 (PCS). The AC input terminal of the energy storage inverter 602 is electrically connected to the AC output terminal of the photovoltaic inverter 502, and the AC output terminal of the energy storage inverter 602 is electrically connected to the DC input terminal of the battery pack 601. The energy storage inverter can be a hybrid energy storage inverter (PCS) (with bidirectional AC / DC conversion function). This PCS structure also has MPPT (maximum power point tracking) function: it can be connected to photovoltaic DC power, realizing flexible interaction between photovoltaic, energy storage, and the grid.

[0051] Furthermore, the intelligent control unit includes a controller 7, and the energy storage unit also includes an energy storage controller 603 (referred to as BMS). The data communication terminal of the controller 7 is connected to the data communication terminal of the energy storage controller 603, and the data communication terminal of the controller 7 is also connected to the data communication terminal of the energy storage inverter 602.

[0052] Controller 7 can be an industrial PC or an embedded main control board, or an integrated control module of multiple controllers cascaded together, physically connected via wired bus (such as Modbus RTU / TCP, BACnet) and / or wireless network (such as LoRa, Zigbee). It can acquire data from field devices: integrated sensors in each room, an outdoor weather station, supply and return water temperature sensors in the radiant circuit, status feedback control of each branch, water pump, and valve, water pump / fan operating status and frequency feedback, heat pump communication interface, sky radiation unit sensors (panel surface temperature, ambient temperature, etc.), photovoltaic inverter communication interface, energy storage inverter communication interface, and energy storage controller communication interface (due to the limitations of the attached diagram, the connection relationships between the controller and various valves, water pumps, fans, heat pump main units, etc., are not shown). Controller 7 can acquire data from sensors monitoring indoor air dew point or radiant surface temperature. Based on this sensor data, it can adjust the water supply parameters of the multi-dimensional radiant terminal unit to proactively avoid condensation risks.

[0053] To address the problems existing in the prior art, this utility model innovatively proposes a building environment control system. On the one hand, by integrating the ceiling, walls, and floor to form a multi-dimensional, large-area radiative heat exchange network structure, it can create an extremely uniform, stable, and dead-angle-free indoor temperature field, avoiding the uneven heating and cooling and drafty feeling of traditional convection air conditioning, and solving the problem of limitations in the application of a single radiant surface. On the other hand, it integrates a sky radiant cooling unit, which can switch between the sky radiant cooling unit and the radiative heat exchange network structure, cleverly utilizing the free cold source in nature. Under suitable meteorological conditions, it can significantly replace or assist heat pump cooling, reducing the energy consumption of building control during the cooling season, and solving the problem of high building control energy consumption caused by the uncoordinated application of the sky radiant cooling unit and radiative heat exchange.

[0054] In this utility model's technical solution, the fresh air unit is structurally independent of the radiant terminal unit, possessing its own dedicated air intake and exhaust ducts and fresh air handling unit. This separation design offers significant advantages. The fresh air handling unit integrates components such as a total heat exchanger, humidity control module, exhaust fan, supply fan, and filter, forming a complete fresh air treatment system. This design physically separates the latent heat regulation and ventilation functions of the fresh air treatment process from the indoor sensible heat regulation function undertaken by the radiant terminal unit. The fresh air handling unit primarily handles the latent heat and humidity of the fresh air. The total heat exchanger recovers energy during fresh air introduction, reducing heat loss; the humidity control module precisely adjusts the fresh air humidity according to indoor humidity requirements, achieving latent heat regulation and ventilation. The radiant terminal unit, on the other hand, focuses on indoor sensible heat regulation, adjusting indoor temperature through radiant water pipes embedded in the building surface. Both functions operate independently without interference, achieving independent control of indoor temperature and humidity, effectively improving indoor environmental comfort while reducing energy consumption.

[0055] The building environment control system of this utility model also includes a photovoltaic unit, a building distribution box, and an energy storage unit. The DC output terminal of the photovoltaic panel is electrically connected to the DC input terminal of the photovoltaic inverter, the AC output terminal of the photovoltaic inverter is electrically connected to the building distribution box, and the power output terminal of the building distribution box is electrically connected to the power input terminal of the heat pump host. The energy storage unit includes a battery pack and an energy storage inverter. The AC input terminal of the energy storage inverter is electrically connected to the AC output terminal of the photovoltaic inverter, and the DC output terminal of the energy storage inverter is electrically connected to the AC input terminal of the battery pack, realizing photovoltaic power supply and storage of excess electrical energy, further reducing the energy consumption of building environment control.

[0056] 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 building environment control system, characterized in that, include: The system comprises a multi-radiation terminal unit, a heat pump unit, a sky radiant cooling unit, and an intelligent control unit. The multi-radiation terminal unit includes a ceiling radiant terminal module, a wall radiant terminal module, and a floor radiant terminal module. The heat pump unit includes a buffer water tank (306) and a heat pump host (301). The water supply terminals of the ceiling radiant terminal module, the wall radiant terminal module, and the floor radiant terminal module are all connected to the water supply terminal pipeline on the secondary side of the buffer water tank (306). The water return terminals of the ceiling radiant terminal module, the wall radiant terminal module, and the floor radiant terminal module are all connected to the water return terminal pipeline on the secondary side of the buffer water tank (306). The water outlet on the primary side of the buffer water tank (306) is one... The inlet pipe is connected to the heat pump host (301), and the other is connected to the inlet pipe of the sky radiation cooling unit; a three-way switching valve (408) is provided on the primary side return water pipe between the buffer water tank (306) and the heat pump host (301). One of the three-way switching valves (408) is connected to the primary side inlet pipe of the buffer water tank (306), one is connected to the outlet pipe of the heat pump host (301), and the other is connected to the outlet pipe of the sky radiation cooling unit; the data communication terminal of the intelligent control unit is connected to the data communication terminal of the heat pump host (301), and the control output terminal of the intelligent control unit is electrically connected to the switching control terminal of the three-way switching valve (408).

2. The building environment control system according to claim 1, characterized in that, It also includes a fresh air unit, which includes a fresh air handling unit (201). Inside the fresh air handling unit (201), along the airflow direction, there are arranged in sequence an outdoor fresh air intake (203) for introducing outdoor fresh air into the fresh air handling unit (201), a filter device (208) for filtering outdoor fresh air, a total heat exchange core (209) for energy exchange between the filtered fresh air and the exhaust air, and a humidity control module (210) for humidity control of the fresh air after energy exchange. A blower (211) for delivering dehumidified fresh air into the room and an indoor air supply duct (204) are provided at the end of the indoor air supply duct (204) and an indoor air outlet (206) located at the top of the room. The fresh air unit (201) also includes an exhaust fan (212) for expelling indoor polluted air to the outside. The exhaust fan (212) is connected to an indoor exhaust duct (205) at the end of the indoor exhaust duct (205) and an outdoor exhaust outlet (202) is provided at the end of the indoor exhaust duct (205).

3. The building environment control system according to claim 1, characterized in that, The multi-radiation terminal unit includes a water distributor (110) and a water collector (111). The inlet of the water distributor (110) is connected to the secondary side water supply pipeline of the buffer water tank (306), and the outlet of the water distributor (110) is connected to the water supply pipelines of the ceiling radiation terminal module, the wall radiation terminal module, and the floor radiation terminal module, respectively. The outlet of the water collector (111) is connected to the secondary side return pipeline of the buffer water tank (306). The inlet of the multi-radiation terminal unit is connected to the return water pipes of the ceiling radiation terminal module, the wall radiation terminal module, and the floor radiation terminal module, respectively; the multi-radiation terminal unit includes a floor water supply shut-off valve (102), a floor return water shut-off valve (103), a ceiling water supply shut-off valve (105), a ceiling return water shut-off valve (106), a wall water supply shut-off valve (108), and a wall return water shut-off valve (109). The floor water supply shut-off valve (102) is located between the water distributor (110) and the floor radiation terminal module. The water supply pipeline between the terminal modules, the floor return water shut-off valve (103) is set in the return water pipeline between the water distributor (110) and the floor radiant terminal module; the ceiling water supply shut-off valve (105) is set in the water supply pipeline between the water distributor (110) and the ceiling floor radiant terminal module, the ceiling return water shut-off valve (106) is set in the return water pipeline between the water distributor (110) and the ceiling radiant terminal module; the wall water supply shut-off valve (108) is set in the water distributor (110) between the floor radiant terminal module and the ceiling floor radiant terminal module. 10) The water supply pipeline between the wall-mounted radiant terminal module and the wall-mounted return water shut-off valve (109) is set in the return water pipeline between the water distributor (110) and the wall-mounted radiant terminal module; the control terminals of the floor water supply shut-off valve (102), floor return water shut-off valve (103), ceiling water supply shut-off valve (105), ceiling return water shut-off valve (106), wall water supply shut-off valve (108), and wall return water shut-off valve (109) are respectively electrically connected to the control output terminal of the intelligent control unit.

4. The building environment control system according to claim 3, characterized in that, The floor radiant terminal module includes a floor radiant panel, which, from bottom to top, includes a load-bearing floor slab layer (116), a first insulation layer (115) to prevent heat from being transferred downwards, a leveling layer (114) embedded with floor radiant water pipes (101), a moisture-proof layer (113) to isolate the floor radiant water pipes (101) from the indoor humid environment, and a floor decoration layer (112) to protect the floor radiant water pipes (101); the ceiling radiant terminal module includes a ceiling radiant panel (104), which, from bottom to top, includes a first finishing layer (119) to protect the ceiling structure, a first gypsum board (118) to bear the weight, and a layer to reduce heat loss. The second insulation layer (117) through which indoor heat is transferred to the outside through the ceiling, the first gypsum board (118) includes a first heat-conducting layer (122) and a ceiling radiant water pipe (120) embedded in the first heat-conducting layer (122); the wall radiant terminal module includes a wall radiant panel (107), the wall radiant panel (107) including, from the outside to the inside, a second finishing layer (123) for protecting the internal structure, a second gypsum board (124) for bearing the weight, and a third insulation layer (125) for reducing the transfer of indoor heat to the outside through the wall, the second gypsum board (124) including a second heat-conducting layer (126) and a wall radiant water pipe (121) embedded in the second heat-conducting layer (126).

5. A building environment control system according to claim 1, characterized in that, A heat pump water supply shut-off valve (302) for regulating the flow of water from the heat pump unit (301) to the buffer water tank (306) is installed at the outlet of the heat pump unit (301). A heat pump water supply shut-off valve (303) for regulating the flow of water from the buffer water tank to the heat pump unit (301) is installed at the inlet of the heat pump unit (301). A first circulating water pump (304) for providing power to the pipeline from the buffer water tank (306) to the heat pump unit (301) is installed at the outlet of the buffer water tank (306). A Y-type filter (307) for preventing impurities from entering is installed at the suction port of the first circulating water pump (304). A check valve (305) for preventing the pump from reversing is installed at the outlet of the first circulating water pump (304).

6. A building environment control system according to claim 1, characterized in that, The sky radiant cooling unit includes a sky radiant cooling plate (401) and a heat exchanger (405). The sky radiant cooling plate (401) includes, from bottom to top, a sealed metal frame (413) and a windproof glass cover (409). The metal frame (413) forms a cavity inside. The bottom of the cavity includes a fourth insulation layer (412) to prevent the loss of cold energy to the roof. The top of the cavity includes a radiant cooling film layer (410). A cooling water pipe (411) is laid between the fourth insulation layer (412) and the radiant cooling film layer (410). The water supply end of (411) is connected to the water inlet pipe of the primary side of the heat exchanger (405), and the return end of the cooling water pipe (411) is connected to the return end pipe of the primary side of the heat exchanger (405); one of the water inlets of the secondary side of the heat exchanger (405) is connected to the water outlet pipe of the primary side of the buffer water tank (306), and the other is connected to the water inlet pipe of the heat pump host (301); one of the water outlets of the secondary side of the heat exchanger (405) is connected to the water inlet pipe of the primary side of the buffer water tank (306), and the other is connected to the water outlet pipe of the heat pump host (301).

7. A building environment control system according to claim 6, characterized in that, The sky radiation cooling unit also includes a primary circulation water supply shut-off valve (403), a primary circulation water return shut-off valve (404), a second circulation water pump (402), a secondary circulation water supply shut-off valve (406), and a secondary circulation water return shut-off valve (407). The primary circulation water supply shut-off valve (403) is installed in the primary water supply pipeline of the heat exchanger (405), the primary circulation water return shut-off valve (404) is installed in the primary water return pipeline of the heat exchanger (405), and the second circulation water pump (402) is installed in the primary water return pipeline of the heat exchanger (405). 05) The secondary circulation water supply shut-off valve (406) is installed in the secondary water supply pipeline of the heat exchanger (405), and the secondary circulation water return shut-off valve (407) is installed in the secondary return water pipeline of the heat exchanger (405); the control terminals of the primary circulation water supply shut-off valve (403), the primary circulation water return shut-off valve (404), the second circulation water pump (402), the secondary circulation water supply shut-off valve (406), and the secondary circulation water return shut-off valve (407) are respectively electrically connected to the control output terminal of the intelligent control unit.

8. A building environment control system according to claim 1, characterized in that, The building environment control system also includes a photovoltaic unit and a building distribution box (8). The photovoltaic unit includes a photovoltaic panel (501) and a photovoltaic inverter (502). The DC output terminal of the photovoltaic panel (501) is electrically connected to the DC input terminal of the photovoltaic inverter (502). The AC output terminal of the photovoltaic inverter (502) is electrically connected to the building distribution box (8). The power output terminal of the building distribution box (8) is electrically connected to the power input terminal of the heat pump host (301).

9. A building environment control system according to claim 8, characterized in that, The building environment control system also includes an energy storage unit, which includes a battery pack (601) and an energy storage inverter (602). The AC input terminal of the energy storage inverter (602) is electrically connected to the AC output terminal of the photovoltaic inverter (502), and the DC output terminal of the energy storage inverter (602) is electrically connected to the DC input terminal of the battery pack (601).

10. A building environment control system according to claim 9, characterized in that, The intelligent control unit includes a controller (7), and the energy storage unit also includes an energy storage controller (603). The data communication terminal of the controller (7) is connected to the data communication terminal of the energy storage controller (603).

Images