Heat exchange structure and fresh air system

Abstract

This invention discloses a heat exchange structure and a fresh air system. The heat exchange structure includes multiple layers of exchange layers stacked sequentially, each layer covered with a heat exchange film. Each exchange layer includes a frame and multiple exchange channels arranged sequentially within the frame, extending along the airflow direction. The exchange layer also includes horizontal strips on the frame that pass through the multiple exchange channels. Vertical strips are provided at intervals between the horizontal strips and the walls of each exchange channel, corresponding to the positions of the horizontal strips and the exchange channels. The horizontal strips establish a continuous lateral connection between the multiple channels, improving the overall lateral stiffness and deformation resistance of the exchange layer, reducing local displacement or warping of the frame and channel walls during use. Furthermore, the vertical strips extend into the corresponding exchange channels, guiding and rectifying the airflow, improving the uniformity of the flow field across the channel cross-section, and reducing energy consumption.

Description

Technical Field

[0001] This invention relates to the field of fresh air structure technology, and in particular to a heat exchange structure and a fresh air system. Background Technology

[0002] Heat exchange devices refer to structures used for heat exchange in air conditioning systems, including but not limited to evaporators, condensers, and plate heat exchangers, with the medium being either gas or liquid; among these, gas-based heat exchange devices often have the advantage of low energy consumption. Specifically, in existing heat exchange or heat-humidification exchange devices, common structures often employ rectangular or plate-layered structures, with multiple gas channels arranged parallel inside the shell. Different airflows are separated by baffles, allowing heat or moisture exchange between the two gas streams on opposite sides of the channel. While this type of structure is relatively simple to manufacture, it still has certain shortcomings in actual operation. Firstly, when the channel length is large or the structural span is large, the internal baffles are prone to deformation under airflow pressure, temperature difference stress, and long-term humid and hot environments, thus affecting the overall structural stability. In severe cases, it can even lead to localized narrowing or deformation of the channel, thereby affecting the long-term reliable operation of the equipment. On the other hand, when gas flows in the channel, uneven velocity distribution is likely to occur. For example, some gas flows faster along the channel wall, while the velocity is lower in the middle of the channel, thus forming local stagnant areas or dead zones. This makes the degree of gas participation in heat exchange uneven, affecting the overall heat exchange or humidification efficiency and ultimately leading to increased energy consumption.

[0003] In summary, when the structure is large or the number of channels is large, how to maintain uniform gas flow within the channels while ensuring structural stability has become a technical problem that needs to be solved in the design of existing heat exchange structures. Summary of the Invention

[0004] The purpose of this invention is to provide a heat exchange structure and a fresh air system to solve the technical problems of insufficient stability and high energy consumption in existing heat exchange and humidification devices when the structure size is large or the number of channels is large.

[0005] To achieve this objective, the present invention adopts the following technical solution: A heat exchange structure includes multiple layers of exchange layers stacked sequentially, the surface of each exchange layer being covered with a heat exchange film; each exchange layer includes a frame and a plurality of exchange channels arranged sequentially within the frame, the exchange channels extending along the airflow direction; The switching layer is also provided with a horizontal bar, which is disposed on the frame and passes through multiple switching channels in sequence; the horizontal bar is provided with a vertical bar corresponding to the position of each switching channel, and the vertical bar is located in the corresponding switching channel and is spaced apart from the wall of the switching channel.

[0006] Optionally, in any two adjacent exchange layers, one exchange layer is a first layer and the other exchange layer is a second layer, wherein the airflow direction of the first layer is opposite to the airflow direction of the second layer.

[0007] Optionally, the exchange channel includes an inlet channel, a middle channel, and an outlet channel that are sequentially connected along the airflow direction; In the vertical direction, the middle section of the first layer coincides with the middle section of the second layer; the entrance channel of the first layer and the exit channel of the second layer are located on one side of the middle section, and the exit channel of the first layer and the entrance channel of the second layer are located on the other side of the middle section.

[0008] Optionally, the entrance channel in the first layer and the exit channel in the second layer are arranged to intersect, and / or the exit channel in the first layer and the entrance channel in the second layer are arranged to intersect.

[0009] Optionally, the inlet channel is set at a first angle relative to the middle channel, and the outlet channel is set at a second angle relative to the middle channel; The vertical section is arranged parallel to the middle channel. One end of the vertical section extends into the entrance channel and is arranged at a first angle with the middle channel. The other end of the vertical section extends into the exit channel and is arranged at a second angle with the middle channel.

[0010] Optionally, the entrance channel includes an entrance bend channel and an entrance parallel channel that are sequentially connected along the middle channel away from the middle channel. The entrance bend channel is bend-shaped, and the entrance parallel channel is set at a first angle with the middle channel. One end of the vertical bar extends into the entrance bend channel but does not extend into the entrance parallel channel.

[0011] Optionally, the outlet channel includes an outlet bend channel and an outlet parallel channel that are sequentially connected along the middle channel away from the middle channel. The outlet bend channel is bend-shaped, and the outlet parallel channel is set at a second angle with the middle channel. The other end of the vertical bar extends into the outlet bend channel but does not extend into the outlet parallel channel.

[0012] Optionally, the frame includes a first border, a second border, a third border, a fourth border, a fifth border, and a sixth border that are connected in a circular sequence. The first border is arranged parallel to the fourth border; the exchange channel extends from the first border to the fourth border and is at least partially arranged parallel to the second border and the fifth border. The first border and the sixth border are symmetrically arranged, and the third border and the fourth border are symmetrically arranged; In any two adjacent exchange layers, the first border of one exchange layer overlaps with the sixth border of the other exchange layer, and the third border of one exchange layer overlaps with the fourth border of the other exchange layer.

[0013] Optionally, the frame is provided with a plurality of channel strips arranged side by side, and an exchange channel is formed between every two adjacent channel strips; and each channel strip is connected to the horizontal strip.

[0014] Optionally, the channel strip includes a central strip and edge strips; the end of the central strip is provided with a connecting hole; Both the first frame and the fourth frame include a first positioning strip and a second positioning strip. The first positioning strip and the second positioning strip are spaced apart in the vertical direction and extend from the end of the central strip to the adjacent frame. The edge strip is disposed between the first positioning strip and the second positioning strip.

[0015] Optionally, the sixth frame has a first mounting groove corresponding to the first positioning strip or the second positioning strip on the first frame; The third frame has a second mounting groove corresponding to the first or second positioning strip on the fourth frame.

[0016] A fresh air system includes a first air duct, a second air duct, and a heat exchange structure as described above. The first air duct is connected to an odd-numbered heat exchange layer, and the second air duct is connected to an even-numbered heat exchange layer.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The heat exchange structure provided by this invention features horizontal bars positioned on a frame and sequentially passing through multiple exchange channels. This establishes a continuous lateral connection between the channels, transforming the previously relatively independent channel areas with long support paths into a unified load-bearing structure. This improves the overall lateral stiffness and deformation resistance of the exchange layer, reducing local shifts or warping of the frame and channel walls during use. Simultaneously, vertical bars are positioned corresponding to each exchange channel, extending into the channel while maintaining a distance from the channel wall. These vertical bars guide and rectify the airflow passing through the channel. Because the vertical bars are positioned near the center of the channel along its extension direction and spaced apart from the wall, the gas no longer easily adheres to a single sidewall at high speed, nor does it easily form a low-speed stagnant zone in the center of the channel. Instead, the vertical bars, acting as dividers and guides, create a more balanced velocity distribution, improving the uniformity of the flow field across the channel cross-section and allowing the gas to contact the heat exchange film covering the exchange layer surface more fully and uniformly. In this way, local flow resistance changes and heat exchange performance fluctuations caused by structural deformation are avoided, and the fullness of heat and humidity exchange in each area of ​​the channel is improved by optimizing the flow state. Under the premise of the same heat exchange performance, lower energy consumption is achieved. Therefore, the present invention can effectively improve the flow uniformity of airflow in the exchange channel while improving the overall and local structural stability of the exchange layer. This solves the technical problems of insufficient stability and high energy consumption in the heat and humidity exchange devices of the prior art when the structural size is large or the number of channels is large. Attached Figure Description

[0018] 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.

[0019] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of the heat exchange structure provided in an embodiment of the present invention; Figure 2 for Figure 1 A magnified structural diagram at point A; Figure 3 This is a schematic diagram of the overall structure of the switching layer in an embodiment of the present invention. Figure 4 This is a front view schematic diagram of a switching layer in an embodiment of the present invention; Figure 5 for Figure 4 A magnified structural diagram at point B; Figure 6 for Figure 4 A magnified structural diagram at point C; Figure 7 This is a front view schematic diagram of another exchange layer in an embodiment of the present invention; Figure 8 This is a schematic diagram of the assembly structure of the two-layer exchange layer in an embodiment of the present invention; Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure at point D; Diagram explanation: 100, Switching layer; 1001, First layer; 1002, Second layer; 110. Exchange channel; 111. Entrance channel; 1111. Entrance bend channel; 1112. Entrance parallel channel; 112. Middle channel; 113. Exit channel; 1131. Exit bend channel; 1132. Exit parallel channel; 120. Frame; 121. First border; 122. Second border; 123. Third border; 124. Fourth border; 125. Fifth border; 126. Sixth border; 130. Horizontal bar; 140. Vertical bar; 150. Channel bar; 151. Central bar; 152. Edge bar; 153. Connecting hole; 161. First positioning bar; 162. Second positioning bar; 127. First mounting groove; 128. Second mounting groove. Detailed Implementation

[0021] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: This embodiment provides a heat exchange structure, which refers to a structure used for heat and moisture exchange between a first gas and a second gas. It is widely used in scenarios such as fresh air systems, air conditioning systems, and data center cooling systems, enabling a higher-temperature gas to transfer heat to a lower-temperature gas and a higher-humidity gas to transfer moisture to a lower-humidity gas. This embodiment improves the specific structure of the heat exchange structure. like Figure 1 and Figure 2 As shown, the heat exchange structure in this embodiment includes multiple layers of exchange layers 100 stacked sequentially. The surface of the exchange layer 100 is covered with a heat exchange film. This heat exchange film is a thin film commonly used by those skilled in the art to separate two gases. Its thickness is negligible, so that the two gases exchange only heat and moisture.

[0025] like Figure 4 and Figure 7 As shown, the exchange layer 100 includes a frame 120 and a plurality of exchange channels 110 arranged sequentially in the frame 120. The exchange channels 110 extend along the airflow direction. It can be understood that gas flows through the exchange channels 110 and through the exchange layer 100 to complete the exchange of heat and moisture. The exchange layer 100 is also provided with a horizontal bar 130, which is provided on the frame 120 and passes through the plurality of exchange channels 110 in sequence. The horizontal bar 130 is provided with a vertical bar 140 corresponding to the position of each exchange channel 110. The vertical bar 140 is located in the corresponding exchange channel 110 and is spaced apart from the wall of the exchange channel 110.

[0026] Specifically, in this embodiment, the horizontal bar 130 is disposed on the frame 120 and passes sequentially through multiple exchange channels 110, which is equivalent to establishing a continuous lateral connection between multiple channels. This transforms the originally relatively independent channel areas with long support paths into an integral load-bearing structure, thereby improving the overall lateral stiffness and deformation resistance of the exchange layer 100 and reducing local displacement or warping of the frame 120 and channel walls during use. At the same time, vertical bars 140 are disposed at the positions of the horizontal bar 130 corresponding to each exchange channel 110. The vertical bars 140 extend into the interior of the corresponding exchange channel 110 but are spaced apart from the channel wall, which can guide and rectify the airflow passing through the channel. Because the vertical bars 140 are positioned near the center of the exchange channel 110 along its extension direction and spaced apart from the wall, the gas no longer easily adheres to a single sidewall and flows at high speed, nor does it easily form a low-speed stagnant zone in the center of the channel. Instead, under the separation and guidance of the vertical bars 140, a more balanced velocity distribution is formed, thereby improving the uniformity of the flow field across the channel cross-section. This allows the gas to contact the heat exchange film covering the surface of the exchange layer 100 more fully and uniformly. In this way, local flow resistance changes and heat exchange performance fluctuations caused by structural deformation are avoided, and the fullness of heat exchange and humidification participation in each area within the channel is improved by optimizing the flow state. Therefore, this invention can effectively improve the uniformity of airflow within the exchange channel 110 while enhancing the overall and local structural stability of the exchange layer 100. This solves the technical problems of insufficient stability and high energy consumption in existing heat exchange and humidification devices when the structural size is large or the number of channels is large.

[0027] Furthermore, in any two adjacent exchange layers 100, one exchange layer 100 is the first layer 1001 and the other exchange layer 100 is the second layer 1002. The airflow direction of the first layer 1001 is opposite to the airflow direction of the second layer 1002.

[0028] For example, such as Figure 4 As shown, the airflow direction of the first layer 1001 is from the upper right to the lower left, as... Figure 7 As shown, the airflow direction of the second layer 1002 flows from the upper left to the lower right, making the airflow direction of the first layer 1001 opposite to that of the second layer 1002.

[0029] In practical implementation, the installation direction of adjacent exchange layers 100 can be changed, for example, by flipping adjacent exchange layers 100 during assembly, so that reverse airflow channels are formed within adjacent exchange layers 100. Through this structural arrangement, a gas flow pattern similar to counter-current heat exchange is formed between the first layer 1001 and the second layer 1002. When two gases with different temperatures or humidity levels flow in adjacent exchange layers 100, a stable temperature and humidity gradient can be maintained over a relatively long distance along their flow paths. This avoids the situation where thermal or humidity equilibrium is rapidly reached at the front of the channel, allowing the heat and moisture exchange process to continue along the length of the channel, improving the overall heat and moisture exchange efficiency. Simultaneously, because the adjacent airflow directions are opposite, an interlaced flow structure can be formed in spatial distribution, allowing different areas on the surface of the exchange layer 100 to continuously contact gases with significant temperature and humidity differences, thereby increasing the driving force on both sides of the heat exchange membrane and improving the exchange capacity per unit area.

[0030] More specifically, the exchange channel 110 includes an inlet channel 111, a middle channel 112, and an outlet channel 113 connected sequentially along the airflow direction. In the vertical direction, the middle channel 112 in the first layer 1001 coincides with the middle channel 112 in the second layer 1002; the inlet channel 111 in the first layer 1001 and the outlet channel 113 in the second layer 1002 are located on one side of the middle channel 112, and the outlet channel 113 in the first layer 1001 and the inlet channel 111 in the second layer 1002 are located on the other side of the middle channel 112.

[0031] It should be noted that "overlap" here refers to the fact that the channel areas of the two are basically corresponding in the vertical direction. That is, when the two exchange layers 100 are stacked, the two middle channels 112 have a high degree of overlap in the planar projection, allowing the airflow on both sides to flow relative to each other over a long path, thereby forming a stable heat and humidity exchange area. Specifically, the inlet channel 111 in the first layer 1001 exchanges heat and humidity with the outlet channel 113 in the second layer 1002, the outlet channel 113 in the first layer 1001 exchanges heat and humidity with the inlet channel 111 in the second layer 1002, and the middle channel 112 in the first layer 1001 overlaps with the middle channel 112 in the second layer 1002 for heat and humidity exchange.

[0032] like Figure 4 , Figure 7 and Figure 8 As shown, the entrance channel 111 in the first layer 1001 and the exit channel 113 in the second layer 1002 are intersecting, and / or the exit channel 113 in the first layer 1001 and the entrance channel 111 in the second layer 1002 are intersecting.

[0033] In this embodiment, the entrance channel 111 in the first layer 1001 and the exit channel 113 in the second layer 1002 are intersecting, and the exit channel 113 in the first layer 1001 and the entrance channel 111 in the second layer 1002 are intersecting. It should be noted that the "intersecting arrangement" mentioned here refers to the fact that, after two adjacent exchange layers 100 are stacked, the extension direction of the entrance channel 111 in the first layer 1001 and the extension direction of the exit channel 113 in the second layer 1002 intersect in the vertical projection, forming a certain angle rather than being parallel or completely overlapping. Similarly, the exit channel 113 in the first layer 1001 and the entrance channel 111 in the second layer 1002 are also arranged intersecting in spatial position. In specific implementation, the entrance channel 111 can be set at a first angle relative to the middle channel 112, and the exit channel 113 can be set at a second angle relative to the middle channel 112, so that the entrance channel 111 and the exit channel 113 form an inclined extending channel structure in the overall structure. When the two exchange layers 100 are stacked vertically, the intersecting relationship between adjacent channels will naturally be formed.

[0034] Through the above structural arrangement, the gases in the two adjacent exchange layers 100 form a cross-flow relationship when entering or leaving the middle channel 112, thereby creating a more complex and sufficient contact path between the two gas streams in the inlet and outlet regions. Before the gas in the first layer 1001 enters the middle channel 112 through the inlet channel 111, it forms a spatial cross-correspondence with the gas discharged from the second layer 1002 through the outlet channel 113, allowing the two gas streams to exchange heat and moisture through the heat exchange membrane in this region. Since the two channels are arranged intersectingly, there is a certain angle between the relative flow directions of the two air streams in this region, thereby increasing the relative flow velocity component between the two gases, making the boundary layer between the gas and the heat exchange membrane easier to disturb, and thus improving the heat and moisture transfer efficiency in this region.

[0035] Meanwhile, the outlet channel 113 in the first layer 1001 and the inlet channel 111 in the second layer 1002 are intersecting, so that the gas about to leave the first layer 1001 and the gas just entering the second layer 1002 form a cross-corresponding heat and humidity exchange relationship on the other side. Since the gas just entering the inlet channel 111 usually maintains its original temperature and humidity state, while the gas about to leave the outlet channel 113 has undergone a certain degree of heat and humidity exchange, there is still a significant temperature or humidity difference between the two. Therefore, a high exchange driving force can still be maintained in the cross region, allowing the gas to continue to carry out effective heat and moisture transfer in the outlet region, thereby extending the overall heat and humidity exchange path and improving the energy utilization efficiency of the heat exchange structure.

[0036] As another optional implementation, the inlet channel 111 in the first layer 1001 and the outlet channel 113 in the second layer 1002 are arranged to overlap, and the outlet channel 113 in the first layer 1001 and the inlet channel 111 in the second layer 1002 are arranged to intersect and overlap. In this case, it is equivalent to all the exchange layers 100 being stacked in the same way. The two adjacent exchange layers 100 are only distinguished by the opposite airflow direction. For example, the airflow direction of the first layer 1001 flows from the upper right to the lower left, while the airflow direction of the second layer 1002 flows from the lower left to the upper left, so as to realize that the airflow direction of the first layer 1001 is opposite to the airflow direction of the second layer 1002.

[0037] Furthermore, such as Figures 4 to 6 As shown, the inlet channel 111 is set at a first angle relative to the middle channel 112, and the outlet channel 113 is set at a second angle relative to the middle channel 112; the vertical bar 140 is set parallel to the middle channel 112, one end of the vertical bar 140 extends into the inlet channel 111 and is set at the first angle with the middle channel 112; the other end of the vertical bar 140 extends into the outlet channel 113 and is set at the second angle with the middle channel 112.

[0038] Through the above structural arrangement, the exchange channel 110 forms different airflow guidance states in the inlet region, middle section region, and outlet region. In the middle section channel 112, since the vertical bar 140 is arranged basically parallel to the middle section channel 112, it can separate and guide the gas without significantly increasing the flow resistance, so that the gas forms a relatively uniform flow velocity distribution on the channel cross-section, avoiding excessive concentration of airflow on the channel wall or in the central region of the channel, thereby improving the uniformity of gas participation in heat and moisture exchange across the entire channel cross-section; At the inlet channel 111, since the inlet channel 111 is set at a first angle relative to the middle channel 112, and one end of the vertical bar 140 extends into this area and forms a first angle with the middle channel 112, the vertical bar 140 forms an inclined guide structure in the inlet area. When gas enters the middle channel 112 from the inlet channel 111, under the guidance of the vertical bar 140, the airflow can gradually change its flow direction and transition to the mainstream direction of the middle channel 112, thereby reducing the local impact or turbulence phenomenon generated at the channel turning point, and allowing the airflow to gradually form a stable flow state before entering the middle channel 112. At the same time, this inclined guide structure can also disperse the airflow entering the channel to a certain extent, making the airflow more evenly distributed on the channel cross-section, thereby reducing the situation of excessive airflow concentration in local areas and insufficient flow in other areas. At the outlet channel 113, since the outlet channel 113 is set at a second angle relative to the middle channel 112, the other end of the vertical bar 140 extends into the outlet channel 113 and forms a second angle with the middle channel 112, thus forming an inclined guide structure in the outlet area. When gas flows from the middle channel 112 into the outlet channel 113, the vertical bar 140 can guide the airflow to gradually change its flow direction and smoothly transition to the flow direction of the outlet channel 113, thereby reducing the local eddies and energy loss generated by the gas in the outlet turning area, so that the gas can maintain a relatively stable flow state after leaving the middle channel 112, which is beneficial to reducing the flow resistance of the overall channel structure.

[0039] It should be further explained that the inlet channel 111 includes an inlet bend channel 1111 and an inlet parallel channel 1112 connected sequentially along the path away from the middle channel 112. The inlet bend channel 1111 is bend-shaped, and the inlet parallel channel 1112 is set at a first angle with the middle channel 112. One end of the vertical bar 140 extends into the inlet bend channel 1111 but does not extend into the inlet parallel channel 1112. Through the above arrangement, the vertical bar 140 mainly acts on the inlet bend area where the airflow direction changes. When the gas enters the inlet bend channel 1111 from the inlet parallel channel 1112 and is preparing to transition to the middle channel 112, under the guidance of the vertical bar 140, the airflow can form a more stable transition flow state in the bend area, reducing the local impact or turbulence generated at the bend position, and allowing the airflow to enter the middle channel 112 more smoothly. Meanwhile, since the vertical strip 140 does not extend into the inlet parallel channel 1112, the gas maintains a relatively smooth flow space in the initial stage of entering the exchange layer 100, thereby reducing the initial flow resistance in the inlet area and avoiding excessive pressure drop before the gas enters the main heat exchange area, which is beneficial to improving the ventilation performance of the overall structure.

[0040] It should be further explained that the outlet channel 113 includes an outlet bend channel 1131 and an outlet parallel channel 1132 connected sequentially along the middle channel 112. The outlet bend channel 1131 is bend-shaped, and the outlet parallel channel 1132 is set at a second angle with the middle channel 112. The other end of the vertical bar 140 extends into the outlet bend channel 1131 but does not extend into the outlet parallel channel 1132. Through the above structural arrangement, the vertical bar 140 plays a guiding role at the bend position where the gas transitions from the middle channel 112 to the outlet region, causing the airflow to gradually change its flow direction in the outlet bend channel 1131 and stably transition to the outlet parallel channel 1132. This reduces the local turbulence and energy loss generated at the turning point and improves the flow stability of the airflow when it leaves the exchange channel 110. Meanwhile, since the vertical strip 140 does not extend into the parallel outlet channel 1132, the gas maintains a relatively smooth discharge path when leaving the exchange layer 100, reducing the accumulation of resistance in the outlet area and helping to reduce the overall flow resistance of the structure.

[0041] Based on the above implementation methods, such as Figures 3 to 9 As shown, the frame 120 is hexagonal. Specifically, the frame 120 includes a first border 121, a second border 122, a third border 123, a fourth border 124, a fifth border 125, and a sixth border 126 connected in a circular manner. The first border 121 and the fourth border 124 are arranged in parallel. The exchange channel 110 extends from the first border 121 to the fourth border 124 and is at least partially parallel to the second border 122 and the fifth border 125. The first border 121 and the sixth border 126 are symmetrically arranged, and the third border 123 and the fourth border 124 are symmetrically arranged. In any two adjacent exchange layers 100, the first border 121 of one exchange layer 100 overlaps with the sixth border 126 of the other exchange layer 100, and the third border 123 of one exchange layer 100 overlaps with the fourth border 124 of the other exchange layer 100.

[0042] It is understandable that the frame 120 has a hexagonal structure. It should be noted that the term "hexagonal" here refers to the frame 120 being a closed structure formed by six sequentially connected borders. Compared to traditional rectangular or square frame structures, this structure creates multi-directional support paths in the circumferential direction, enabling the frame 120 to achieve better structural stability in multiple directions. In specific implementation, the frame 120 includes a first border 121, a second border 122, a third border 123, a fourth border 124, a fifth border 125, and a sixth border 126 that are sequentially and cyclically connected. These borders are connected end-to-end to form a closed frame structure, thereby providing an installation and support foundation for the exchange channel 110 and the internal channel strip 150.

[0043] The first frame 121 and the fourth frame 124 are arranged parallel to each other. The exchange channel 110 extends from the first frame 121 to the fourth frame 124, and is at least partially parallel to the second frame 122 and the fifth frame 125. It should be noted that the phrase "the exchange channel 110 extends from the first frame 121 to the fourth frame 124" means that the exchange channel 110 runs through both opposite frames of the frame 120, allowing gas to enter the exchange layer 100 from the first frame 121 side and flow out from the fourth frame 124 side, thus forming a continuous airflow path.

[0044] With the above structural arrangement, the exchange channel 110 is arranged diagonally inside the frame 120. Compared with a simple straight through structure, this structure can effectively increase the effective extension length of the exchange channel 110 inside the frame 120, so that the gas can have a longer flow path when passing through the exchange layer 100, thereby extending the time for heat and moisture exchange between gases and improving the overall heat and moisture exchange efficiency.

[0045] The first border 121 and the sixth border 126 are symmetrically arranged, as are the third border 123 and the fourth border 124. It should be noted that "symmetrical arrangement" here means that the corresponding borders form a mirror image of the central area in the overall structure of the frame 120, giving the frame 120 good structural symmetry. In specific implementations, the six borders can be arranged in a regular hexagonal or approximately hexagonal structure, so that the first border 121 and the sixth border 126 are located in one pair of symmetrical positions on the frame 120, and the third border 123 and the fourth border 124 are located in another pair of symmetrical positions. This symmetrical structural arrangement allows the frame 120 to achieve a more balanced stress state in its overall structure. When the exchange layer 100 is affected by airflow pressure, temperature changes, or humidity changes during stacking and use, the borders can form a mutually supporting structural relationship, thereby reducing warping or deformation of the frame 120 in local areas and improving the overall structural stability of the exchange layer 100.

[0046] More importantly, the above configuration can form a flow structure that can be interleaved in spatial distribution by changing the stacking method of the exchange layers 100, provided that only one type of exchange layer 100 is produced.

[0047] Specifically, in any two adjacent exchange layers 100, the first border 121 of one exchange layer 100 overlaps with the sixth border 126 of another exchange layer 100, and the third border 123 of one exchange layer 100 overlaps with the fourth border 124 of another exchange layer 100. It should be noted that "overlapping arrangement" here refers to the vertically staggered arrangement of adjacent exchange layers 100 when multiple exchange layers 100 are stacked vertically, such that the first border 121 of one layer coincides with the sixth border 126 of another layer in the vertical projection direction, and simultaneously, the third border 123 of one layer coincides with the fourth border 124 of another layer in the vertical projection direction. In practical implementation, adjacent exchange layers 100 can be rotated or flipped before stacking to create an interlocking border position relationship between the two exchange layers 100. Through the aforementioned overlapping arrangement, adjacent exchange layers 100 form an interlaced support relationship in the overall structure, enabling each exchange layer 100 to form a more stable stacked structure through the frame, thereby improving the structural stability of the entire heat exchange structure in the vertical direction. Simultaneously, because the frame positions of adjacent exchange layers 100 form a staggered overlapping relationship, the exchange channels 110 are arranged in an interlaced manner in the multi-layer structure, reducing the possibility of short-circuiting airflow in local areas and resulting in a more uniform airflow distribution among the exchange layers 100.

[0048] Furthermore, the frame 120 is provided with a plurality of channel strips 150 arranged side by side, and an exchange channel 110 is formed between every two adjacent channel strips 150; and each channel strip 150 is connected to the horizontal strip 130 respectively.

[0049] Specifically, the channel strip 150 includes a central strip 151 and an edge strip 152; the end of the central strip 151 is provided with a connecting hole 153; the first frame 121 and the fourth frame 124 both include a first positioning strip 161 and a second positioning strip 162, the first positioning strip 161 and the second positioning strip 162 are arranged at intervals in the vertical direction, and extend from the end of the central strip 151 to the adjacent frame; the edge strip 152 is disposed between the first positioning strip 161 and the second positioning strip 162.

[0050] It is understood that the central strip 151 is the main structure located in the central area of ​​the channel strip 150, primarily used to form the main sidewall structure of the exchange channel 110 and to provide channel separation and structural support. The edge strip 152 is an extension structure located at the edge of the channel strip 150, used for connection or positioning with the frame structure of the frame 120. The central strip 151 has a connecting hole 153 at its end. It should be noted that the "connecting hole 153" is a through hole structure located at the end of the central strip 151, mainly used for connecting and fixing multiple exchange layers 100 when stacked. In specific implementations, connecting holes 153 can be provided at corresponding positions on multiple exchange layers 100, forming a through channel in the vertical direction for all exchange layers 100, and then connected as a whole using connectors. For example, bolts, studs, tie rods, or riveting can be used to pass through each connecting hole 153, thereby fixing multiple exchange layers 100 into a single structure.

[0051] Furthermore, both the first frame 121 and the fourth frame 124 include a first positioning strip 161 and a second positioning strip 162. The first positioning strip 161 and the second positioning strip 162 are arranged vertically at intervals and extend from the end of the central strip 151 to the adjacent frame. It should be noted that the "first positioning strip 161" and "second positioning strip 162" mentioned here are positioning structures set at the frame positions, which are arranged vertically at intervals to clamp the channel strip 150. In specific implementation, two mutually spaced positioning strips can be provided on the inner side of the first frame 121 and the fourth frame 124, so that the end of the channel strip 150 can be inserted or snapped between the two positioning strips, thereby achieving the positioning and fixing of the channel strip 150.

[0052] Meanwhile, the edge strip 152 is disposed between the first positioning strip 161 and the second positioning strip 162. Through this structural arrangement, the edge strip 152 can be clamped between the first positioning strip 161 and the second positioning strip 162, thereby forming a stable positioning structure for the channel strip 150 inside the frame 120. Because the positioning strips form an upper and lower clamping structure in the vertical direction, the edge strip 152 is restricted in the vertical direction, thereby reducing the possibility of the channel strip 150 shaking or shifting after assembly.

[0053] Furthermore, through the cooperative structure between the central strip 151, the edge strip 152, and the first positioning strip 161 and the second positioning strip 162, the channel strip 150 can be quickly positioned and stably installed inside the frame 120, thereby ensuring that multiple channel strips 150 maintain a regular arrangement and that the spacing between each exchange channel 110 is stable and consistent, which is beneficial for maintaining a uniform distribution of airflow in each channel. At the same time, the connecting hole 153 can connect the multiple exchange layers 100 as a whole, while the positioning strip structure can stably position the channel strips 150 inside each exchange layer 100, thereby forming a stable support structure for the entire heat exchange structure in both the interlayer and intralayer directions, improving the overall rigidity and deformation resistance of the structure.

[0054] In short, the channel strip 150 of this embodiment is centered on the central strip 151. The end of the central strip 151 extends outward and is provided with a first positioning strip 161 and a second positioning strip 162 that are spaced apart in the vertical direction. The gap between the first positioning strip 161 and the second positioning strip 162 allows the edge strip 152 to pass through and be positioned, so that the edge strip 152 can be restricted in the vertical direction.

[0055] Furthermore, the sixth frame 126 has a first mounting groove 127 corresponding to the first positioning strip 161 or the second positioning strip 162 on the first frame 121; the third frame 123 has a second mounting groove 128 corresponding to the first positioning strip 161 or the second positioning strip 162 on the fourth frame 124. Thus, after multiple exchange layers 100 are stacked, each positioning strip can be embedded into the mounting groove of the corresponding frame, allowing the exchange channels 110 between different exchange layers 100 in the vertical direction of the heat exchange structure to directly connect. (Refer to...) Figure 2 The bottom wall of the entrance channel 111 of the first layer 1001 is set to overlap with the top wall of the exit channel 113 of the second layer 1002 to improve the compactness and stability of the overall structure.

[0056] Example 2; This embodiment also provides a fresh air system, including a first air duct, a second air duct, and a heat exchange structure as shown in Embodiment 1. The first air duct is connected to the odd-numbered exchange layers 100, and the second air duct is connected to the even-numbered exchange layers 100. Exemplarily, indoor air can enter the heat exchange structure through the first air duct, and outdoor air can enter the heat exchange structure through the second air duct. In the heat exchange structure, indoor air flows through the odd-numbered exchange layers 100, and outdoor air flows through the even-numbered exchange layers 100, thereby achieving heat and humidity exchange between indoor and outdoor air in the heat exchange structure. To promote air flow, structures such as fans can be installed at the inlets of the first and second air ducts. Furthermore, the fresh air system of this invention may also include other components and parts known in the prior art to achieve the necessary functions of the fresh air system.

[0057] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat exchange structure, characterized in that, It includes multiple layers of exchange layers (100) stacked sequentially, the surface of which is covered with a heat exchange film; the exchange layer (100) includes a frame (120) and a plurality of exchange channels (110) arranged sequentially in the frame (120), the exchange channels (110) extending along the airflow direction; The exchange layer (100) is also provided with a horizontal bar (130), which is disposed on the frame (120) and passes through multiple exchange channels (110) in sequence; the horizontal bar (130) is provided with a vertical bar (140) corresponding to the position of each exchange channel (110), which is located in the corresponding exchange channel (110) and is spaced apart from the wall of the exchange channel (110); The frame (120) includes a first border (121), a second border (122), a third border (123), a fourth border (124), a fifth border (125), and a sixth border (126) connected in a circular manner in sequence. The first border (121) is arranged parallel to the fourth border (124); the exchange channel (110) extends from the first border (121) to the fourth border (124), and is at least partially arranged parallel to the second border (122) and the fifth border (125); The first border (121) and the sixth border (126) are symmetrically arranged, and the third border (123) and the fourth border (124) are symmetrically arranged; In any two adjacent exchange layers (100), the first border (121) of one exchange layer (100) overlaps with the sixth border (126) of the other exchange layer (100), and the third border (123) of one exchange layer (100) overlaps with the fourth border (124) of the other exchange layer (100). The first frame (121) and the fourth frame (124) each include a first positioning strip (161) and a second positioning strip (162), which are spaced apart in the vertical direction; the sixth frame (126) has a first mounting groove (127) corresponding to the first positioning strip (161) or the second positioning strip (162) on the first frame (121); the third frame (123) has a second mounting groove (128) corresponding to the first positioning strip (161) or the second positioning strip (162) on the fourth frame (124). The entrance channel (111) is set at a first angle relative to the middle channel (112), and the exit channel (113) is set at a second angle relative to the middle channel (112). The vertical bar (140) is arranged parallel to the middle channel (112). One end of the vertical bar (140) extends into the inlet channel (111) and is arranged at a first angle with the middle channel (112). The other end of the vertical bar (140) extends into the outlet channel (113) and is arranged at a second angle with the middle channel (112).

2. The heat exchange structure according to claim 1, characterized in that, In any two adjacent exchange layers (100), one exchange layer (100) is a first layer (1001) and the other exchange layer (100) is a second layer (1002). The airflow direction of the first layer (1001) is opposite to the airflow direction of the second layer (1002).

3. A heat exchange structure according to claim 2, characterized in that, The exchange channel (110) includes an inlet channel (111), a middle channel (112) and an outlet channel (113) that are connected sequentially along the airflow direction. In the vertical direction, the middle passage (112) in the first layer (1001) coincides with the middle passage (112) in the second layer (1002); the entrance passage (111) in the first layer (1001) and the exit passage (113) in the second layer (1002) are located on one side of the middle passage (112), and the exit passage (113) in the first layer (1001) and the entrance passage (111) in the second layer (1002) are located on the other side of the middle passage (112).

4. A heat exchange structure according to claim 3, characterized in that, The entrance channel (111) in the first layer (1001) and the exit channel (113) in the second layer (1002) are intersecting, and / or the exit channel (113) in the first layer (1001) and the entrance channel (111) in the second layer (1002) are intersecting.

5. A heat exchange structure according to claim 4, characterized in that, The entrance channel (111) includes an entrance bend channel (1111) and an entrance parallel channel (1112) that are connected sequentially along the middle channel (112) away from the middle channel (112). The entrance bend channel (1111) is bend-shaped, and the entrance parallel channel (1112) is set at a first angle with the middle channel (112). One end of the vertical bar (140) extends into the entrance bend channel (1111) but does not extend into the entrance parallel channel (1112).

6. A heat exchange structure according to claim 4, characterized in that, The outlet channel (113) includes an outlet bend channel (1131) and an outlet parallel channel (1132) that are connected sequentially along the middle channel (112) away from the middle channel. The outlet bend channel (1131) is bend-shaped, and the outlet parallel channel (1132) is set at a second angle with the middle channel (112). The other end of the vertical bar (140) extends into the outlet bend channel (1131) and does not extend into the outlet parallel channel (1132).

7. A heat exchange structure according to claim 6, characterized in that, The frame (120) is provided with a plurality of channel strips (150) arranged side by side, and an exchange channel (110) is formed between every two adjacent channel strips (150); and each channel strip (150) is connected to the horizontal strip (130).

8. A fresh air system, characterized in that, It includes a first air duct, a second air duct, and a heat exchange structure as described in any one of claims 1-7, wherein the first air duct is connected to the odd-numbered exchange layer (100), and the second air duct is connected to the even-numbered exchange layer (100).

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