A total heat exchange fresh air purification system

Abstract

This utility model relates to a total heat exchange fresh air purification system, including a total heat exchanger, an air inlet duct connected to an indoor air inlet, a first branch duct connected to the end of the air inlet duct, a plurality of first ventilation ducts connected to the first branch duct, and a first DC variable frequency fan for supplying air to the room installed in the first ventilation duct; an exhaust duct connected to an indoor air outlet, a second branch duct connected to the end of the exhaust duct, a plurality of second ventilation ducts connected to the second branch duct, and a second DC variable frequency fan for exhausting air from the room installed in the second ventilation duct; the ends of adjacent first and second ventilation ducts are located in the same air supply and exhaust area. In the above scheme, each area (room) can independently operate the first and second DC variable frequency fans to activate the total heat exchanger, avoiding forced linkage of the entire area which would cause a large amount of ineffective air exchange and energy waste, and significantly reducing the overall operating energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of fresh air technology, and in particular to a total heat exchange fresh air purification system. Background Technology

[0002] Currently, centralized total heat exchange systems face three major technical bottlenecks:

[0003] 1) A single main unit needs to overcome the resistance of the filter screen and all the pipe resistance at the same time, which leads to a significant increase in the power consumption of the fan, increased noise, increased component load, and reduced equipment lifespan.

[0004] 2) Forced linkage across the entire area results in a large amount of ineffective ventilation, leading to energy waste;

[0005] 3) The heat exchange core's actual heat recovery efficiency decreases significantly due to the imbalance of airflow in the required ventilation areas. Traditional zone control schemes use dampers for regulation, but cannot resolve the coupling contradiction between pressure distribution and heat recovery efficiency. Summary of the Invention

[0006] To address the aforementioned issues, the present invention aims to provide a total heat exchange fresh air purification system. This system features separate supply and exhaust fans in multiple ventilation zones to overcome duct resistance, reduce the power consumption of the main unit, and extend equipment lifespan. It supports independent control and flexible speed adjustment across multiple zones, significantly reducing system energy consumption while maintaining efficient heat recovery performance, precisely controlling terminal airflow, and ensuring uniform airflow distribution.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A total heat exchange fresh air purification system is characterized in that: it includes a total heat exchanger, an outdoor air inlet and an outdoor air outlet on one side of the total heat exchanger, and an indoor air inlet and an indoor air outlet on the other side. An air inlet pipe is connected to the indoor air inlet, and a first branch pipe is connected to the end of the air inlet pipe. Several first ventilation ducts are connected to the first branch pipe, and a first DC frequency converter fan for supplying air to the room is installed in the first ventilation duct.

[0009] An exhaust duct is connected to the indoor exhaust vent, and a second branch duct is connected to the end of the exhaust duct. Several second ventilation ducts are connected to the second branch duct, and a second DC variable frequency fan for exhausting air into the room is installed in the second ventilation duct. The ends of adjacent first ventilation ducts and second ventilation ducts are located in the same air supply and exhaust area.

[0010] The total heat exchanger includes a housing, within which an air passage cavity is formed. The air passage cavity includes a core housing cavity in the center, and a first air inlet cavity, a second air inlet cavity, a first air outlet cavity, and a second air outlet cavity surrounding the core housing cavity. A total heat exchange core is adapted to be installed in the core housing cavity. The first air inlet cavity is connected to the second air inlet cavity through the total heat exchange core. A HEPA filter and an activated carbon filter are arranged sequentially along the air inlet direction in the first air inlet cavity. A fresh air fan is installed in the second air inlet cavity near the indoor air inlet. The first air outlet cavity is connected to the second air outlet cavity through the total heat exchange core.

[0011] Preferably, the first ventilation duct is provided with a first check valve on the front side of the first DC inverter fan to prevent backflow of air in the supply and exhaust areas.

[0012] Preferably, the second ventilation duct is provided with a second check valve on the front side of the second DC inverter fan to prevent backflow of air supplied from the supply and exhaust area.

[0013] Preferably, the housing has an assembly opening corresponding to the total heat exchange core, and the surface of the housing is hinged with a door panel for covering the assembly opening. The side wall of the housing has a buckle for locking the outside of the door panel.

[0014] Preferably, the total heat exchange core is square, and a handle is provided at the upper end of the total heat exchange core.

[0015] Preferably, a partition is provided between adjacent cavities. The partition includes at least a first partition and a second partition that are attached to the side wall of the total heat exchange core. The first partition and the second partition are respectively provided with ventilation holes corresponding to the total heat exchange core.

[0016] This utility model adopts the above-mentioned technical solution, in which a first diversion pipe and a second diversion pipe are respectively set at the indoor air inlet and indoor air outlet of the total heat exchanger. Several first ventilation ducts branch off from the first diversion pipe, and a first DC variable frequency fan is installed in each of the first ventilation ducts to supply air into the room and overcome the duct pressure. Several second ventilation ducts branch off from the second diversion pipe, and a second DC variable frequency fan is installed in each of the second ventilation ducts to exhaust air from the room and overcome the duct pressure. One first ventilation duct and one second ventilation duct correspond to one room. When ventilation is needed in that room, the first and second DC variable frequency fans start and activate the total heat exchanger. The fresh air fan starts and overcomes the filter resistance to draw in fresh air from the outside, which passes through the first air inlet chamber, the total heat exchange core, and the second air inlet chamber into the indoor duct. The first DC variable frequency fan overcomes the duct resistance to draw in air from the indoor duct into the room, and the second DC variable frequency fan draws in stale air from the room, which passes through the total heat exchange core to the outside, completing the total heat exchange and ventilation. This has the following beneficial effects:

[0017] ① Each area (room) can independently operate the first DC inverter fan and the second DC inverter fan, thereby activating the total heat exchanger (when all rooms are turned on for ventilation, the power is equivalent to that of traditional systems), achieving precise regional airflow control and rapid response, avoiding forced linkage of the entire area which would result in a large amount of ineffective ventilation and energy waste, and significantly reducing overall operating energy consumption.

[0018] ② In a total heat exchanger, the fresh air fan only needs to overcome the filter resistance, reduce power consumption, significantly reduce equipment operating noise levels, reduce equipment load, and extend equipment lifespan; at the same time, the exhaust fan is eliminated in the total heat exchanger, reducing the configuration cost of the total heat exchanger.

[0019] ③ The total heat exchange and fresh air exchange adopt an optimized flow channel design. The supply and exhaust air in a single room are carried out through different pipes to reduce airflow interference and maintain the stability of heat exchange. At the same time, the fresh air and exhaust air volume are matched in real time to maintain the stability of heat exchange (the intake air volume is matched in real time when starting a single room and multiple rooms respectively).

[0020] ④ The indoor piping adopts a compact pipe design to reduce installation space requirements and improve space utilization. The system can be freely expanded according to the number of terminals, making selection and configuration convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the planar structure of a total heat exchange fresh air purification system.

[0022] Figure 2 This is a three-dimensional structural diagram of a total heat exchanger.

[0023] Figure 3 This is a top view of the total heat exchanger.

[0024] Figure 4 This is a schematic diagram of the side structure of a total heat exchanger.

[0025] Figure 5 This is a schematic diagram of the assembly of the total heat exchange core after the door panel of the total heat exchanger is opened.

[0026] Figure 6 A three-dimensional structural diagram of the total heat exchange core.

[0027] Figure 7 This is a schematic diagram of the planar structure of the first partition.

[0028] Figure 8 This is a schematic diagram of the planar structure of the second partition. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] like Figures 1-8The total heat exchange fresh air purification system shown includes a total heat exchanger 1, an outdoor air inlet 2 and an outdoor air outlet 3 on one side of the total heat exchanger 1, and an indoor air inlet 4 and an indoor air outlet 5 on the other side. An air inlet pipe 6 is connected to the indoor air inlet 4, and a first diversion pipe 7 is connected to the end of the air inlet pipe 6. Several first ventilation ducts 8 are connected to the first diversion pipe 7, and a first DC variable frequency fan 9 for supplying air to the room is installed in the first ventilation duct 8.

[0035] An exhaust pipe 10 is connected to the indoor exhaust vent 5. A second branch pipe 11 is connected to the end of the exhaust pipe 10. Several second ventilation ducts 12 are connected to the second branch pipe 11. A second DC variable frequency fan 13 for exhausting air into the room is installed in the second ventilation duct 12. The ends of adjacent first ventilation ducts 8 and second ventilation ducts 12 are located in the same air supply and exhaust area 14.

[0036] The total heat exchanger 1 includes a housing 15, within which an air passage cavity is formed. The air passage cavity includes a core housing cavity in the center, and a first air inlet cavity 16, a second air inlet cavity 17, a first air outlet cavity 18, and a second air outlet cavity 19 surrounding the core housing cavity. A total heat exchange core 20 is adapted to be installed in the core housing cavity. The first air inlet cavity 16 is connected to the second air inlet cavity 17 through the total heat exchange core 20. A HEPA filter 21 and an activated carbon filter 22 are arranged sequentially along the air inlet direction in the first air inlet cavity 16. A fresh air fan 23 is installed in the second air inlet cavity 17 near the indoor air inlet 4. The first air outlet cavity 18 is connected to the second air outlet cavity 19 through the total heat exchange core 20.

[0037] In the above technical solution, a first branch pipe and a second branch pipe are respectively installed at the indoor air inlet and indoor air outlet of the total heat exchanger. Several first ventilation ducts are branched off from the first branch pipe. A first DC variable frequency fan is installed in the first ventilation duct to supply air to the room and overcome the duct pressure. Several second ventilation ducts are branched off from the second branch pipe. A second DC variable frequency fan is installed in the second ventilation duct to exhaust air from the room and overcome the duct pressure. One first ventilation duct and one second ventilation duct correspond to one room. When the room needs ventilation, the first DC variable frequency fan and the second DC variable frequency fan start and wake up the total heat exchanger. The fresh air fan starts to overcome the filter resistance and draws fresh air from the outside through the first air inlet chamber, the total heat exchange core and the second air inlet chamber into the indoor duct. The first DC variable frequency fan overcomes the duct resistance and draws air from the indoor duct into the indoor room. The second DC variable frequency fan draws stale air from the indoor room through the total heat exchange core to the outside, completing the total heat exchange and ventilation.

[0038] Each zone (room) can independently operate the first and second DC inverter fans, thereby activating the total heat exchanger (with all rooms operating at the same power as traditional systems), achieving precise zone airflow control and rapid response. This avoids forced linkage across all zones, which leads to significant ineffective ventilation and energy waste, thus significantly reducing overall energy consumption. In the total heat exchanger, the fresh air fan only needs to overcome filter resistance, reducing power consumption and drastically lowering operating noise levels, reducing equipment load, and extending equipment lifespan. Simultaneously, the exhaust fan is eliminated from the total heat exchanger, reducing its configuration cost.

[0039] The total heat exchange and fresh air ventilation adopt an optimized flow channel design. Supply and exhaust air within a single room are handled through different ducts, reducing airflow interference and maintaining heat exchange stability. Simultaneously, the fresh air and exhaust air volumes are matched in real-time to maintain heat exchange stability (intake volume is matched in real-time for single-room and multi-room startup). The indoor ductwork uses a compact design to reduce installation space requirements, improve space utilization, and the system can be freely expanded according to the number of terminal units, making selection and configuration convenient.

[0040] Furthermore, a first check valve 24 is provided on the front side of the first DC inverter fan 9 in the first ventilation duct 8 to prevent backflow of air within the supply and exhaust air area 14. In this technical solution, the first check valve prevents backflow of air into the room and ensures the stability of the incoming air.

[0041] Furthermore, a second check valve 25 is provided on the front side of the second DC inverter fan 13 in the second ventilation duct 12 to prevent backflow of air supplied from the supply and exhaust area 14. In this technical solution, the second check valve prevents backflow of air in the duct and ensures the stability of the exhaust.

[0042] Furthermore, the housing 15 has an assembly opening corresponding to the total heat exchange core 20. A door panel 26 for covering the assembly opening is hinged to the surface of the housing 15, and a buckle 27 is provided on the side wall of the housing 15 for locking the outside of the door panel 26. In this technical solution, the assembly opening is used for replacing the total heat exchange core, and the door panel is used to cover the assembly opening to ensure the airtightness of the assembly.

[0043] Furthermore, the total heat exchange core 20 is square in shape, and a handle 28 is provided at the upper end of the total heat exchange core 20. In this technical solution, the handle facilitates the taking and placing of the total heat exchange core, improving convenience.

[0044] Furthermore, a partition is provided between adjacent cavities. The partition includes at least a first partition 29 and a second partition 30 that are attached to the side wall of the total heat exchange core 20. The first partition 29 and the second partition 30 are respectively provided with ventilation holes 31 corresponding to the total heat exchange core 20. In this technical solution, the ventilation holes on the partition are used for heat exchange between the cavities and the total heat exchange core during air supply and exhaust.

[0045] It should be noted that the stale air exhausted from the room and the fresh air brought in from the outside exchange temperature through the heat transfer plates in the total heat exchange core, and at the same time exchange humidity through the micropores on the plates, thus achieving the effect of both ventilation and maintaining stable indoor temperature and humidity. This is the total heat exchange process.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A total heat exchange fresh air purification system, characterized in that: It includes a total heat exchanger (1), an outdoor air inlet (2) and an outdoor air outlet (3) on one side of the total heat exchanger (1), and an indoor air inlet (4) and an indoor air outlet (5) on the other side. An air inlet pipe (6) is connected to the indoor air inlet (4), and a first branch pipe (7) is connected to the end of the air inlet pipe (6). Several first ventilation ducts (8) are connected to the first branch pipe (7), and a first DC frequency converter fan (9) for supplying air to the room is installed in the first ventilation duct (8). The indoor exhaust vent (5) is connected to an exhaust pipe (10), and the end of the exhaust pipe (10) is connected to a second branch pipe (11). The second branch pipe (11) is connected to several second ventilation ducts (12), and the second ventilation ducts (12) are equipped with a second DC variable frequency fan (13) for exhausting air into the room. The ends of adjacent first ventilation ducts (8) and second ventilation ducts (12) are located in the same air supply and exhaust area (14). The total heat exchanger (1) includes a housing (15), and an air passage cavity is formed inside the housing (15). The air passage cavity includes a core receiving cavity in the middle, and a first air inlet cavity (16), a second air inlet cavity (17), a first air outlet cavity (18), and a second air outlet cavity (19) surrounding the core receiving cavity. A total heat exchange core (20) is adapted to be provided inside the core receiving cavity. The first air inlet cavity (16) is connected to the second air inlet cavity (17) through the total heat exchange core (20). A HEPA filter (21) and an activated carbon filter (22) are arranged sequentially along the air inlet direction inside the first air inlet cavity (16). A fresh air fan (23) is provided in the second air inlet cavity (17) near the indoor air inlet (4). The first air outlet cavity (18) is connected to the second air outlet cavity (19) through the total heat exchange core (20).

2. The total heat exchange fresh air purification system according to claim 1, characterized in that: The first ventilation duct (8) is provided with a first check valve (24) on the front side of the first DC variable frequency fan (9) to prevent backflow of air in the supply and exhaust area (14).

3. The total heat exchange fresh air purification system according to claim 2, characterized in that: The second ventilation duct (12) is provided with a second check valve (25) on the front side of the second DC variable frequency fan (13) to prevent backflow of air sent out from the air supply and exhaust area (14).

4. The total heat exchange fresh air purification system according to claim 1, characterized in that: The housing (15) has an assembly opening corresponding to the heat exchange core (20). The surface of the housing (15) is hinged with a door panel (26) for covering the assembly opening. The side wall of the housing (15) has a buckle (27) for locking the outside of the door panel (26).

5. The total heat exchange fresh air purification system according to claim 4, characterized in that: The total heat exchange core (20) is square, and a handle (28) is provided at the upper end of the total heat exchange core (20).

6. The total heat exchange fresh air purification system according to claim 5, characterized in that: A partition is provided between adjacent cavities. The partition includes at least a first partition (29) and a second partition (30) attached to the side wall of the total heat exchange core (20). The first partition (29) and the second partition (30) are respectively provided with ventilation holes (31) corresponding to the total heat exchange core (20).

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