A centralized air supply modular distribution system for a building complex

Abstract

The present application relates to the technical field of plate-type total heat exchanger, and particularly relates to a centralized air supply modular distribution system for building group, which comprises a shell, an air supply module, an air extraction module, a heat exchange module and a support module. The support module is arranged in the first channel and the second channel of the heat exchange core. When a pressure difference is caused by boundary layer effect or air flow disturbance at different positions in the single first channel or the second channel, the support module can balance the pressure distribution in the channel, so that the air flow is uniformly distributed in the whole channel cross section, and the phenomenon of uneven heat and moisture exchange efficiency caused by excessively high or low local flow rate is avoided. When there is a pressure difference between the adjacent first channel and the second channel due to the difference in air inlet and air outlet resistance, the support module can balance the pressure difference between the first channel and the second channel, avoid the excessive deformation or even rupture of the moisture permeable membrane caused by the unilateral pressure, and ensure the stability of the heat and moisture exchange process.

Description

Technical Field

[0001] This invention relates to the field of plate heat exchanger technology, and more specifically to a modular distribution system for centralized air supply in building clusters. Background Technology

[0002] With increasingly stringent requirements for building energy conservation, centralized air supply systems have become an indispensable infrastructure in modern building complexes. As a core energy-saving component of centralized air supply systems, total heat exchangers can recover energy from indoor exhaust air and preheat or precool fresh air, significantly reducing the energy consumption of air conditioning systems, and therefore have been widely used.

[0003] Currently, total heat exchangers on the market are mainly divided into three types: heat pipe type, rotary type, and plate type. Among them, plate total heat exchangers dominate the air conditioning and ventilation field due to their advantages such as energy saving and environmental protection, simple maintenance, system stability, low operating costs, and resistance to cross-contamination. The heat exchange core of a traditional plate total heat exchanger usually uses corrugated paper as a skeleton to support the heat and mass exchange material, i.e., the permeable membrane. Fresh air and exhaust air flow in channels on both sides of the permeable membrane, and the exchange of sensible heat and latent heat is achieved through temperature difference and water vapor partial pressure difference.

[0004] However, existing plate heat exchangers still have many shortcomings in practical applications. First, the heat exchange core consists of alternating stacked corrugated plates and a permeable membrane. When gas flows through the angle between the corrugated plates and the permeable membrane, significant flow resistance is generated due to the boundary layer effect, resulting in a substantial reduction in the heat and moisture exchange efficiency on both sides of the permeable membrane at this location. Simultaneously, the large-area contact between the corrugated plates and the permeable membrane also hinders the moisture transfer process, further affecting the overall heat exchange efficiency.

[0005] Secondly, in traditional structures, the corrugated plates have high strength. When there is a pressure difference between the fresh air and the exhaust air, the permeable membrane needs to bear the stress alone, and the permeable membrane is prone to breakage due to excessive deformation. Moreover, due to the uneven airflow pressure between two adjacent airflow channels formed by the corrugated plates, the airflow channels are easily deformed, which can even lead to blockage of the airflow channels in severe cases, increasing system resistance and reducing the effect of heat and moisture exchange.

[0006] Furthermore, existing total heat exchangers cannot automatically adjust the cross-sectional area of ​​the airflow channel according to pressure fluctuations in the fresh and exhaust air. When the inlet and outlet air resistances differ, resulting in air pressure differences, the flow velocity within the airflow channel will change, exacerbating the deformation of the airflow channel, easily leading to uneven temperature and humidity distribution, and also reducing the effectiveness of heat and moisture exchange. Summary of the Invention

[0007] This invention provides a modular air supply distribution system for building clusters to solve the problem of poor heat and moisture exchange performance of plate heat exchangers in existing modular air supply distribution systems.

[0008] The modular distribution system for centralized air supply in building clusters according to the present invention adopts the following technical solution: A modular distribution system for centralized air supply in a building cluster, comprising:

[0009] A modular distribution system for centralized air supply in a building complex includes a shell, an air supply module, an exhaust module, a heat exchange module, and a support module.

[0010] The air supply module is used to deliver outdoor air to the interior; the exhaust module is used to deliver indoor air to the exterior; both the exhaust module and the air supply module are disposed inside the housing; the heat exchange module includes a heat exchange core disposed inside the housing, the heat exchange core having multiple first channels and multiple second channels disposed inside, the first channels and second channels being alternately arranged in the extension direction of the heat exchange core, adjacent first channels and second channels being separated by a moisture-permeable membrane, the air supplied by the air supply module flowing along the first channels, and the air supplied by the exhaust module flowing along the second channels; the support module is disposed inside the first channels and the second channels, the support module being configured to equalize the pressure difference within the first channel or the second channel when a pressure difference occurs at different locations within the first channel or the second channel; the support module can also be configured to equalize the pressure difference between the first channel and the second channel when a pressure difference exists between the first channel and the adjacent second channel.

[0011] Furthermore, the support module includes multiple first bending plates and multiple second bending plates. Each first bending plate is disposed within a first channel, and each second bending plate is disposed within a second channel. Both the first bending plate and the second bending plate can form multiple flow channels with the two moisture-permeable membranes. The extension direction of the flow channels formed by the first bending plate is perpendicular to the extension direction of the flow channels formed by the second bending plate.

[0012] Furthermore, both the first and second bent plates have overlapping sections at their bending points. The overlapping sections are portions of the first or second bent plates that overlap each other, and the overlapping sections are perpendicular to the moisture-permeable membrane.

[0013] Furthermore, the overlapping section is provided with a plurality of through grooves, which are used to connect the plurality of flow channels between two adjacent moisture-permeable membranes.

[0014] Furthermore, the first bending plate is made of a rigid material, and the second bending plate is made of a flexible material. Initially, the second bending plate is set to be in a state of compression deformation. When there is a pressure difference between the first channel and the adjacent second channel, the distance between the two breathable membranes that the second bending plate abuts changes, the second bending plate deforms, and the cross-sectional area of ​​the flow channel formed by the second bending plate changes.

[0015] Furthermore, the support module also includes a sensing drive component, which can detect the pressure of the gas flowing inside the first channel and the second channel. The sensing drive component can also drive the spacing between the moisture-permeable membranes on both sides of the second channel to change when there is a pressure difference between the gas flowing inside the first channel and the second channel.

[0016] Furthermore, the sensing drive includes a partition and a drive cylinder. The end of the heat exchange core is provided with a baffle that slides along the axis of the heat exchange core. Two partitions are provided, and the two partitions and the baffle are used to form a first detection chamber and a second detection chamber that are separated from each other. The first detection chamber is connected to the first channel, and the second detection chamber is connected to the second channel. The drive cylinder is disposed between the partition and the baffle. The drive cylinder is telescopic and is used to change its length when there is a pressure difference between the first detection chamber and the second detection chamber.

[0017] Furthermore, one end of the drive cylinder is coaxially fixed to the outside of the wind deflector, and the other end of the drive cylinder is fixed to the housing; the middle of the two partitions is vertically fixedly connected, one side wall of the partition is vertically fixedly connected to the wind deflector, and the other side wall of the partition is fixedly connected to the housing; the partition is telescopic between the wind deflector and the housing; the drive cylinder is located at the connection of the two partitions; a detection piston is provided inside the drive cylinder, and the detection piston is fixedly connected to the wind deflector via a connecting rod; the detection piston can divide the inside of the drive cylinder into a first chamber and a second chamber that are isolated from each other; the side wall of the drive cylinder is provided with a first opening and a second opening, the first opening communicating with the first chamber and the first detection chamber, and the second opening communicating with the second chamber and the second detection chamber.

[0018] Furthermore, the air supply module includes an air supply fan, which is fixedly installed inside the housing. The output port of the air supply fan penetrates through the housing, and an air supply pipe extending into the room is provided at the output port of the air supply fan. An air inlet duct is provided inside the housing, passing through the heat exchange core and extending to the outside. The air inlet duct is connected to the first channel and to the input port of the air supply fan.

[0019] Furthermore, the exhaust module includes an exhaust fan, which is fixedly installed inside the housing and spaced apart from the air supply fan; the housing is provided with an exhaust duct that passes through the heat exchange core and extends into the room, the exhaust duct is connected to the second channel, the exhaust duct is connected to the inlet of the exhaust fan, and the outlet of the exhaust fan passes through the housing and extends to the outside.

[0020] The beneficial effects of this invention are as follows: This invention provides a modular air supply and distribution system for centralized air supply in a building complex, comprising a shell, an air supply module, an exhaust module, a heat exchange module, and a support module. By installing the support module inside the first and second channels of the heat exchange core, when pressure differences arise at different locations within a single first or second channel due to boundary layer effects or airflow disturbances, the support module can balance the pressure distribution within that channel, ensuring uniform airflow across the entire channel cross-section. This avoids uneven heat and moisture exchange efficiency caused by excessively high or low local flow velocities, reduces local flow resistance due to boundary layer effects, and significantly improves the overall heat and moisture exchange efficiency of the permeable membrane. When pressure differences exist between adjacent first and second channels due to differences in air intake and exhaust resistance, the support module can balance the pressure difference between the first and second channels, preventing the permeable membrane from excessively deforming or even rupturing due to unilateral pressure. It also prevents deformation and blockage of the first and second channels due to uneven pressure, reducing the overall operating resistance of the system and ensuring the stability of the heat and moisture exchange process. Furthermore, the support module provides uniform support to the permeable membrane, further enhancing its structural strength and extending the service life of the heat exchange core.

[0021] Furthermore, by setting overlapping sections perpendicular to the permeable membrane at the bending points of the first and second bending plates, the overlapping sections provide continuous and stable support for the permeable membrane, improving the support stiffness of the bending plates and preventing the permeable membrane from denting or bulging. Simultaneously, when the overlapping sections are set perpendicular to the permeable membrane, the local flow resistance caused by the boundary layer effect is reduced when the gas flows through the angle between the first or second bending plate and the permeable membrane, minimizing obstruction to the moisture transfer process and ensuring the effective heat exchange area of ​​the permeable membrane. Additionally, by setting multiple through-slots on the overlapping sections, adjacent flow channels within the same channel can be interconnected through these slots. When a pressure difference occurs between different flow channels, the airflow can quickly flow through the through-slots to equalize the pressure, further optimizing the airflow distribution within the channel and improving the uniformity of heat and moisture exchange. By setting the first bending plate to a rigid material and the second bending plate to a flexible material, the rigid first bending plate can maintain the structural stability of the first channel and keep the cross-sectional area of ​​the first channel's flow guide channel unchanged. When there is a pressure difference between the first channel and the second channel, the flexible second bending plate will undergo elastic deformation under pressure, automatically adjusting the cross-sectional area of ​​the flow guide channel in the second channel, stabilizing the airflow velocity in the channel, further balancing the pressure difference between the first channel and the second channel, reducing the stress on the permeable membrane, and ensuring the stability of the heat and moisture exchange process. Attached Figure Description

[0022] 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, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a modular air supply system for building clusters, with the end caps of the casing removed, provided in an embodiment of the present invention. Figure 2 This is a top view of a modular air supply system for centralized air distribution in a building cluster, with the end caps of the casing removed, provided in an embodiment of the present invention. Figure 3 This is a schematic diagram illustrating the fit between the heat exchange core and the shell in a modular air supply system for centralized air distribution in a building cluster, as provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of a heat exchange core in a modular air supply system for building clusters, provided by an embodiment of the present invention. Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6A front view of a heat exchange core in a modular air supply system for building clusters, provided as an embodiment of the present invention; Figure 7 for Figure 6 Cross-sectional view along the BB direction; Figure 8 for Figure 7 A magnified view of a section at point C; Figure 9 A schematic diagram of a first bent plate, a second bent plate, and two moisture-permeable membranes in a modular air supply system for a building cluster provided in an embodiment of the present invention; Figure 10 for Figure 9 A magnified view of a section at point D; Figure 11 An exploded view of a first bent plate and a second bent plate in a modular air supply system for centralized air distribution in a building cluster, provided in an embodiment of the present invention; Figure 12 for Figure 11 A magnified view of a section at point E in the middle.

[0024] In the diagram: 110, shell; 120, heat exchange core; 121, frame; 122, moisture-permeable membrane; 210, first bent plate; 220, second bent plate; 230, flow guide channel; 240, overlapping section; 241, through groove; 250, baffle plate; 260, partition plate; 270, drive cylinder; 271, piston chamber; 272, detection piston; 280, connecting rod; 310, first detection chamber; 320, second detection chamber; 330, first opening; 340, second opening; 410, air supply fan; 420, exhaust fan. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is 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 can mean that the first feature is 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.

[0028] like Figures 1 to 12 As shown in the figure, an embodiment of the present invention provides a modular distribution system for centralized air supply in a building complex, which includes a shell 110, an air supply module, an exhaust module, a heat exchange module, and a support module.

[0029] The shell 110 is a rectangular modular box structure. The shell 110 is made of galvanized steel plate and coated with anti-corrosion coating. Multiple units can be connected in parallel according to the scale of the building complex.

[0030] Both the air supply module and the exhaust module are fixedly installed inside the housing 110. The air supply module and the exhaust module are distributed on one side of the width direction inside the housing 110, and are arranged at intervals between each other. The air supply module is used to supply outdoor air to the indoor unit, and the exhaust module is used to supply indoor air to the outdoor unit.

[0031] The heat exchange module is located inside the housing 110. The heat exchange module is located on the other side of the width direction inside the housing 110 and in the middle of the length direction inside the housing 110. During the operation of the air supply module and the air exhaust module, the flowing gas can pass through the heat exchange module.

[0032] The heat exchange module includes a heat exchange core 120, which has a rectangular parallelepiped structure and is composed of multiple layers of permeable membranes 122 spaced apart. A channel for flowing gas is formed between adjacent permeable membranes 122, resulting in multiple channels for flowing gas inside the heat exchange core 120. Specifically, the channel through which the exhaust module delivers gas is the first channel, and the channel through which the supply module delivers gas is the second channel. Along the axial extension direction of the heat exchange core 120, the first and second channels are alternately arranged, and adjacent first and second channels are completely isolated by the permeable membranes 122. Furthermore, the diagonals of the heat exchange core 120's cross-section are set to be vertical and horizontal. When the supply and exhaust modules are activated, the gas entering the room and the gas exiting the room pass through the first and second channels respectively, and their flow directions are opposite. The gas flowing inside the first and second channels exchanges sensible and latent heat on both sides of the permeable membranes 122.

[0033] The support module is located inside all the first channels and all the second channels. On the one hand, the support module can balance the pressure distribution inside a single first channel or a single second channel when there is a pressure difference due to boundary layer effect or airflow disturbance at different positions inside the single first channel or a single second channel, so that the airflow flows evenly across the entire cross-section of the first channel or the second channel. On the other hand, the support module can also balance the pressure difference between adjacent first channels and second channels when there is a pressure difference due to the difference in air intake and exhaust resistance, so as to avoid excessive deformation of the moisture permeable membrane 122.

[0034] This invention discloses a modular centralized air supply system for building clusters. By installing support modules inside the first and second channels of the heat exchange core 120, when pressure differences arise at different locations within a single first or second channel due to boundary layer effects or airflow disturbances, the support modules can balance the pressure distribution within that channel. This ensures uniform airflow across the entire channel cross-section, preventing uneven heat and moisture exchange efficiency caused by excessively high or low local flow velocities. It also reduces local flow resistance caused by boundary layer effects, significantly improving the overall heat and moisture exchange efficiency of the permeable membrane 122. When pressure differences exist between adjacent first and second channels due to differences in air inlet and outlet resistances, the support modules can balance these pressure differences, preventing the permeable membrane 122 from excessively deforming or even rupturing due to unilateral pressure. Simultaneously, it prevents deformation and blockage of the first and second channels due to uneven pressure, reducing the overall system operating resistance and ensuring the stability of the heat and moisture exchange process. Furthermore, the support modules provide uniform support for the permeable membrane 122, further enhancing its structural strength and extending the service life of the heat exchange core 120.

[0035] In one embodiment, the support module includes multiple first bent plates 210 and multiple second bent plates 220; each first bent plate 210 is disposed in a first channel, and each second bent plate 220 is disposed in a second channel; both the first bent plates 210 and the second bent plates 220 are continuous wavy structures, with their crests and troughs abutting against the upper and lower moisture-permeable membranes 122 respectively; the first bent plates 210 and the upper and lower moisture-permeable membranes 122 together form multiple guide channels 230 arranged along the extension direction of the first channel, and the second bent plates 220 and the upper and lower moisture-permeable membranes 122 together form multiple guide channels 230 arranged along the extension direction of the second channel; the extension direction of the guide channels 230 formed by the first bent plates 210 is perpendicular to the extension direction of the guide channels 230 formed by the second bent plates 220, so that the gas flowing inside the first channel and the second channel can form cross-flow heat exchange, thereby improving the heat and moisture exchange efficiency.

[0036] In one embodiment, overlapping sections 240 are provided at all bending points of the first bending plate 210 and the second bending plate 220. Specifically, the overlapping sections 240 are formed by overlapping and pressing two layers of sheet metal at the bending points of the bending plates. It is easy to understand that the overlapping sections 240 are located at the crests and troughs of the first bending plate 210 and the second bending plate 220, and the overlapping sections 240 are perpendicular to the moisture-permeable membrane 122. The ends of the overlapping sections 240 are in close contact with the moisture-permeable membrane 122, providing continuous linear support for the moisture-permeable membrane 122 and preventing localized depressions or bulges in the moisture-permeable membrane 122 under pressure.

[0037] Furthermore, by setting the overlapping section 240 perpendicular to the moisture-permeable membrane 122, when the gas flows through the angle between the first bending plate 210 or the second bending plate 220 and the moisture-permeable membrane 122, compared to when the overlapping section 240 perpendicular to the moisture-permeable membrane 122 is not set, the angle between the first bending plate 210 or the second bending plate 220 and the moisture-permeable membrane 122 is increased. This reduces the boundary layer effect of the gas when it is close to the angle, thereby reducing the flow resistance of the gas during the flow process, reducing the obstruction to the moisture transfer process, and ensuring the effective heat exchange area of ​​the moisture-permeable membrane 122.

[0038] In one embodiment, multiple through slots 241 are evenly spaced along the length of the overlapping section 240, each through slot 241 penetrating both sides of the overlapping section 240, connecting two adjacent guide channels 230 within the same first or second channel. When a pressure difference occurs between different guide channels 230 within the same first or second channel, the airflow can flow rapidly through the through slots 241, achieving automatic pressure balancing within the first or second channel. Furthermore, when gas flows through multiple guide channels 230 within the first and second channels, the heat exchange between the gas flowing in the first channel and the gas flowing in the second channel at their convergence in a direction perpendicular to the projection of the permeable membrane 122 differs. Temperature differences exist between the gas at different locations in the first and second channels, resulting in pressure differences between the different guide channels 230 within the first or second channel. By providing multiple through slots 241, the airflow can flow rapidly between the multiple guide channels 230 through the through slots 241, thereby achieving automatic pressure balancing within the first or second channel.

[0039] In one embodiment, the first bending plate 210 is made of a rigid material, specifically rigid ABS plastic, which has high structural strength and can maintain the structural stability of the first channel, so that the cross-sectional area of ​​the guide channel 230 in the first channel remains constant during operation.

[0040] The second bending plate 220 is made of a flexible material, specifically silicone rubber modified polypropylene, which has good elastic deformation capability. When there is a pressure difference between the first channel and the adjacent second channel, if the material of the second bending plate 220 is the same as that of the first bending plate 210, the pressure difference between the first channel and the adjacent second channel will act on the moisture-permeable membrane 122 between them, causing the moisture-permeable membrane 122 to undergo excessive deformation, thereby affecting the service life of the moisture-permeable membrane 122. By setting the second bending plate 220 to a deformable flexible material, initially setting the second bending plate 220 to a compressed deformation state, when there is a pressure difference between the first channel and the adjacent second channel, adjusting the spacing between the moisture-permeable membranes 122 on the corresponding sides of the second channel changes the cross-sectional area of ​​the multiple guide channels 230 in the second channel, thereby changing the flow rate of the gas in the multiple guide channels 230 inside the second channel, thus balancing the pressure difference between the first channel and the second channel, and reducing the stress borne by the moisture-permeable membrane 122 between the first channel and the second channel.

[0041] In one embodiment, the support module further includes a sensing drive; the sensing drive is disposed at the end of the heat exchange core 120. The sensing drive can detect the pressure of the gas flowing inside the first channel and the second channel in real time. When there is a pressure difference between the first channel and the second channel, the sensing drive automatically drives the spacing between the moisture-permeable membranes 122 on both sides of the second channel to change. Furthermore, the gas delivered by the exhaust module flows through multiple second channels at the same time, so the gas pressure inside the multiple second channels is the same. The sensing drive can drive the size of the multiple second channels to change simultaneously, thereby balancing the pressure difference between the first channel and the second channel and reducing the probability of damage to the moisture-permeable membrane 122.

[0042] Specifically, the induction drive component includes a partition 260 and a drive cylinder 270. The heat exchange core 120 has a perforated frame 121, and multiple moisture-permeable membranes 122 are coaxially spaced on the frame 121, and the moisture-permeable membranes 122 can slide along the axial direction on the frame 121. A baffle plate 250 is provided at the end of the heat exchange core 120. The baffle plate 250 is coaxially slidably connected to the frame 121, spaced apart from the inner sidewall of the housing 110, and fixedly connected to the moisture-permeable membranes 122 at the end. Two partitions 260 are provided, and the two partitions 260 are fixedly connected perpendicularly to each other at their middle lengths. The two partitions 260, the baffle plate 250, and the inner wall of the housing 110 together form two first detection chambers 310 and two second detection chambers 320. The first detection chambers 310 and the second detection chambers 320 are isolated from each other. Both first detection chambers 310 are connected to the first channel, and both second detection chambers 320 are connected to the second channel. Furthermore, when the airflow flows through the first channel, one of the first detection chambers 310 is connected to the inlet of the first channel, and the other first detection chamber 310 is connected to the outlet of the first channel. Similarly, when the airflow flows through the second channel, one of the second detection chambers 320 is connected to the inlet of the second channel, and the other second detection chamber 320 is connected to the outlet of the second channel.

[0043] The drive cylinder 270 is located at the intersection of the two partitions 260 and between the partition 260 and the baffle 250. The drive cylinder 270 can automatically extend and retract according to the pressure difference between the first detection chamber 310 and the second detection chamber 320. In the initial state, the length of the drive cylinder 270 is in the middle state, and the length of the drive cylinder 270 can be extended or shortened at this time. When the pressure inside the first channel is greater than the pressure inside the second channel, the permeable membrane 122 between the first and second channels bulges into the second channel. At this time, the drive cylinder 270 shortens and drives the baffle plate 250 to move towards the housing 110. Since the second bending plate 220 is initially in a state of compression deformation, the second bending plate 220 has a tendency to actively reset. Under the pushing of the second bending plate 220, the distance between the permeable membranes 122 in contact with the second bending plate 220 increases, reducing the flow velocity of the gas inside the second channel. According to the principle of dynamics, where the flow velocity is high, the pressure is low. After the flow velocity inside the second channel decreases, the gas inside the second channel decreases and attracts the permeable membrane 122 in contact with the second bending plate 220, thereby slowing down the bulging of the permeable membrane 122 into the second channel.

[0044] In one embodiment, one end of the drive cylinder 270 is coaxially fixed at the center of the outer side of the baffle plate 250, and the other end is fixedly fixed on the inner wall of the housing 110. Two partitions 260 are vertically fixedly connected at their middle portions. One sidewall of the partition 260 is vertically fixedly connected to the baffle plate 250, and the other sidewall of the partition 260 is fixedly connected to the housing 110. The partition 260 is telescopic between the baffle plate 250 and the housing 110. The telescopic direction of the partition 260 is the same as the telescopic direction of the drive cylinder 270. The drive cylinder 270 is located at the connection point of the two partitions 260, and during telescopic movement, the drive cylinder 270 can drive the partitions 260 to telescopically extend and retract.

[0045] The drive cylinder 270 has a piston chamber 271 inside, and the size of the piston chamber 271 can change when the drive cylinder 270 extends or retracts. Further, a detection piston 272 is slidably disposed within the piston chamber 271, and a connecting rod 280 is coaxially fixedly connected to the detection piston 272. The connecting rod 280 passes through the end of the drive cylinder 270 and is fixedly connected to a baffle plate 250. When the detection piston 272 slides along the piston chamber 271, it can drive the baffle plate 250 to move synchronously via the connecting rod 280. The detection piston 272 can divide the piston chamber 271 into a first chamber and a second chamber that are isolated from each other. The side wall of the drive cylinder 270 has a first opening 330 and a second opening 340 that extend through the interior and exterior. The first detection chamber 310, connected at the entrance of the first channel, communicates with the first opening 330, and the second detection chamber 320, connected at the entrance of the second channel, communicates with the second opening 340. When there is a pressure difference between the first detection chamber 310 and the second detection chamber 320, the pressure difference will act on both sides of the detection piston 272, causing the detection piston 272 to move in the piston chamber 271. The detection piston 272 drives the connecting rod 280 and the baffle plate 250 to slide, thereby realizing the automatic adjustment of the length of the drive cylinder 270.

[0046] In one embodiment, the air supply module includes a centrifugal fan 410, which is fixedly installed inside the housing 110. The outlet of the fan 410 penetrates the housing 110, and an air supply duct extending into the room is provided at the outlet of the fan 410. An air inlet duct is provided inside the housing 110, passing through the heat exchange core 120 and extending to the outside. The air inlet duct is connected to a first channel and to the inlet of the fan 410. Outdoor fresh air, under the suction of the fan 410, passes through the air inlet duct, through the first channel of the heat exchange core 120, and is then delivered into the air supply duct by the fan 410.

[0047] In one embodiment, the ventilation module includes an exhaust fan 420, which is a centrifugal fan. The exhaust fan 420 is fixedly installed inside the housing 110, and is spaced apart from the supply fan 410. Further, the exhaust fan 420 is located to the left of the supply fan 410, with one side of the supply fan 410 being the indoor side and the other side of the exhaust fan 420 being the outdoor side.

[0048] The housing 110 has an exhaust duct that extends from the heat exchange core 120 into the room. The exhaust duct is connected to the second channel and the inlet of the exhaust fan 420. The outlet of the exhaust fan 420 passes through the housing 110 and extends to the outside. Under the suction of the exhaust fan 420, the indoor air passes through the exhaust duct and the second channel of the heat exchange core 120. The air undergoes heat and moisture exchange as it flows through the first and second channels. Then, the exhaust fan 420 delivers the air from the exhaust duct to the outdoor environment.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular distribution system for centralized air supply in a building cluster, characterized in that, include: case; An air supply module, which is used to deliver outdoor air to the indoor environment; An exhaust module is used to transport indoor air to the outside; both the exhaust module and the air supply module are located inside the housing. A heat exchange module, comprising a heat exchange core disposed inside the housing, wherein the heat exchange core is provided with a plurality of first channels and a plurality of second channels, the first channels and the second channels being alternately arranged in the extending direction of the heat exchange core, adjacent first channels and second channels being separated by a moisture-permeable membrane, the gas supplied by the air supply module flowing along the first channels, and the gas supplied by the exhaust module flowing along the second channels; A support module is disposed inside the first channel and the second channel. The support module is configured to balance the pressure difference within the first channel or the second channel when a pressure difference occurs at different locations within the first channel or the second channel. The support module is also configured to balance the pressure difference between the first channel and the adjacent second channel when a pressure difference exists between the first channel and the adjacent second channel. The support module includes multiple first bending plates and multiple second bending plates. Each first bending plate is disposed in a first channel, and each second bending plate is disposed in a second channel. Each first bending plate or second bending plate and the two moisture-permeable membranes form multiple flow channels. The extension direction of the flow channels formed by the first bending plates is perpendicular to the extension direction of the flow channels formed by the second bending plates. Both the first and second bent plates have overlapping sections at their bending points. The overlapping sections are formed by a portion of the first or second bent plates overlapping each other, and the overlapping sections are perpendicular to the moisture-permeable membrane. The overlapping section is provided with a plurality of through grooves, which are used to connect the plurality of flow channels between two adjacent moisture-permeable membranes; The first bending plate is made of rigid material, and the second bending plate is made of flexible material. Initially, the second bending plate is set to be in a state of compression deformation. When there is a pressure difference between the first channel and the adjacent second channel, the distance between the two breathable membranes that the second bending plate abuts changes, the second bending plate deforms, and the cross-sectional area of ​​the flow channel formed by the second bending plate changes. The support module also includes a sensing drive, which detects the pressure of the gas flowing inside the first channel and the second channel. When there is a pressure difference between the gas flowing inside the first channel and the second channel, the sensing drive also drives the spacing between the moisture-permeable membranes on both sides of the second channel to change.

2. The modular distribution system for centralized air supply in a building cluster according to claim 1, characterized in that: The sensing drive includes a partition and a drive cylinder. The end of the heat exchange core is provided with a baffle that slides along the axis of the heat exchange core. There are two partitions, which together with the baffles form a first detection chamber and a second detection chamber that are separated from each other. The first detection chamber is connected to the first channel, and the second detection chamber is connected to the second channel. The drive cylinder is disposed between the partition and the baffle. The drive cylinder is telescopic and is used to change its length when there is a pressure difference between the first detection chamber and the second detection chamber.

3. The modular air supply and distribution system for centralized air supply in a building cluster according to claim 2, characterized in that: One end of the drive cylinder is coaxially fixed to the outside of the wind baffle, and the other end of the drive cylinder is fixed to the housing; the middle of the two partitions is vertically fixedly connected, one side wall of the partition is vertically fixedly connected to the wind baffle, and the other side wall of the partition is fixedly connected to the housing; the partition can extend and retract between the wind baffle and the housing; and the drive cylinder is located at the connection of the two partitions. The drive cylinder is equipped with a detection piston, which is fixedly connected to the baffle plate via a connecting rod. The detection piston divides the interior of the drive cylinder into a first chamber and a second chamber that are isolated from each other. The side wall of the drive cylinder is provided with a first opening and a second opening. The first opening connects the first chamber to the first detection chamber, and the second opening connects the second chamber to the second detection chamber.

4. The modular distribution system for centralized air supply in a building cluster according to claim 1, characterized in that: The air supply module includes an air supply fan, which is fixedly installed inside the housing. The air supply fan's output port is provided through the housing, and an air supply pipe extending into the room is provided at the air supply fan's output port. An air inlet duct is provided inside the housing, passing through the heat exchange core and extending to the outside. The air inlet duct is connected to the first channel and to the input port of the air supply fan.

5. A modular distribution system for centralized air supply in a building cluster according to claim 4, characterized in that: The exhaust module includes an exhaust fan, which is fixedly installed inside the housing and spaced apart from the air supply fan. The housing is provided with an exhaust duct that passes through the heat exchange core and extends into the room. The exhaust duct is connected to the second channel and the exhaust duct is connected to the inlet of the exhaust fan. The outlet of the exhaust fan passes through the housing and extends to the outside.

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