Total heat exchanger core and total heat exchanger

Abstract

The application provides a total heat exchanger core and a total heat exchanger, which improve processing efficiency and heat exchange efficiency, and can effectively inhibit air leakage and air mixing even if delamination occurs between the core plate and the film. The total heat exchanger core comprises a frame and a heat exchange core, the heat exchange core comprises a plurality of heat exchange core plates, the plurality of heat exchange core plates are arranged in layers one above another, a plurality of airflow channels are arranged in each heat exchange core plate, and the extension directions of the airflow channels of two adjacent heat exchange core plates are crossed with each other; a heat exchange film is wrapped around one of the two adjacent heat exchange core plates, and the airflow channel port part of one of the two adjacent heat exchange core plates and the corresponding part of the other heat exchange core plate are sealed. The total heat exchanger core of the application can improve the processing efficiency and the heat exchange efficiency of the core, and can effectively inhibit air leakage and air mixing between adjacent heat exchange core plates even if delamination occurs between the heat exchange core plate and the heat exchange film.

Description

[0001] This case is a divisional application of application number 2021110872266, filed on September 16, 2021, entitled "Total Heat Exchanger Core and Total Heat Exchanger". Technical Field

[0002] This invention relates to the field of ventilation system technology, and more particularly to a total heat exchanger core and a total heat exchanger having the total heat exchanger core. Background Technology

[0003] As people's living standards improve, their demands for quality of life also increase. Since air conditioning typically keeps indoor spaces closed, resulting in prolonged periods of poor air circulation, the need for fresh indoor air is becoming increasingly strong. A total heat exchanger is an air purification device that exhausts stale indoor air and introduces fresh outdoor air to meet users' requirements for indoor air exchange. When operating, the total heat exchanger uses its core to exchange heat between stale indoor air and fresh outdoor air, thus preheating (cooling) the introduced fresh outdoor air, thereby reducing energy consumption and improving comfort.

[0004] In the prior art, a total heat exchanger mainly consists of a total heat exchanger core, a power system, a filtration system, a control system, a noise reduction system, and a housing. The total heat exchanger core includes a frame and heat exchange cores housed within the frame. Each heat exchange core includes multiple heat exchange core plates 1 and multiple heat exchange membranes 2. Airflow channels 1.1 are formed within the heat exchange core plates 1, and the heat exchange membranes 2 are membranes that can isolate airflow but allow water molecules to permeate. The heat exchange core plate 1 and the heat exchange membrane 2 are alternately stacked, and the airflow channels 1.1 of adjacent heat exchange core plates are intersected, so that the airflow channel 1.1 of one heat exchange core plate 1 constitutes a fresh air channel, and the airflow channel 1.1 of the other heat exchange core plate 1 constitutes a stale air channel. At the same time, the heat exchange membrane and the heat exchange core plate are bonded together, which can fix the heat exchange membrane and ensure the seal between the membrane and the plate. This ensures that fresh outdoor air can only enter the room through the fresh air channel, and stale indoor air can only flow to the outside through the stale air channel. This avoids airflow from flowing in other directions through the gaps between the membrane and the plate, such as preventing stale air from flowing back into the room through the gaps between the membrane and the plate, or fresh air from flowing back to the outside through the gaps between the membrane and the plate, thus preventing air leakage.

[0005] The existing total heat exchanger core technology has the following disadvantages and deficiencies: 1. During the processing of the total heat exchanger, after laying the bottom heat exchange core plate, apply adhesive to the surface of this heat exchange core plate. Figure 1In section 'a', the adhesive-coated surface is a portion of the core plate, including the connecting hoop surface and all edges. Then, a heat exchange film is applied. Next, adhesive is applied to both the top and bottom surfaces of the penultimate heat exchange core plate, and it is placed in position. Another layer of heat exchange film is then applied, and this process continues until the top heat exchange core plate is laid. That is, except for the top heat exchange core plate, which only requires adhesive to its bottom surface, and the bottom heat exchange core plate, which only requires adhesive to its top surface, all other heat exchange core plates require adhesive to be applied to both the top and bottom surfaces (the adhesive-coated surface of the top surface is the same as the bottom surface of the core plate). Figure 1 The bottom heat exchange core plate has the same adhesive coating on the upper surface, and the adhesive coating on the lower surface is symmetrical with the adhesive coating on the upper surface to ensure reliable sealing with the heat exchange membrane. This results in a complex installation process, low processing efficiency, and a large adhesive coating area between the heat exchange membrane and the heat exchange core plate, which seriously affects the heat exchange efficiency of the entire core. 2. If there is delamination between the heat exchange core plate and the heat exchange membrane, the airflow will flow in other directions through the delamination gap between the membrane and the plate, resulting in air leakage and cross-flow between adjacent core plates, which will affect the fresh air exchange effect. Summary of the Invention

[0006] This invention provides a total heat exchanger core and a total heat exchanger, which improves processing efficiency and heat exchange efficiency, and can effectively suppress air leakage and cross-flow problems even if delamination occurs between the core plate and the membrane.

[0007] In some embodiments of this application, a total heat exchanger core is proposed, comprising: frame; A heat exchange core, which is disposed within the frame, includes multiple heat exchange core plates, which are stacked one on top of the other. Each heat exchange core plate has multiple airflow channels inside, and the extension directions of the airflow channels of two adjacent heat exchange core plates intersect each other. In two adjacent heat exchange core plates, one of the heat exchange core plates is wrapped with a heat exchange membrane. The heat exchange membrane is a cylindrical shape with open ends, and its axis is parallel to the extension direction of the airflow channel of the heat exchange core plate. The heat exchange membrane covers the top surface, bottom surface and a set of opposite sides of the heat exchange core plate, and the heat exchange membrane is bonded to the set of opposite sides. Furthermore, in two adjacent heat exchange core plates, the airflow channel port of one heat exchange core plate is sealed to the corresponding portion of the other heat exchange core plate.

[0008] In this application, the heat exchanger core only requires adhesive to be applied to one set of opposite sides of the core plate during the coating process, instead of applying adhesive to both the top and bottom surfaces of the core plate. This improves processing efficiency and reduces the contact area between the adhesive and the core plate, thereby increasing the overall heat exchange efficiency of the core. Furthermore, even if the adhesive between the heat exchanger core plate and the heat exchange membrane detaches, the heat exchange membrane still covers the top, bottom, and one set of opposite sides of the core plate, ensuring its airflow isolation function. Additionally, the airflow channel port of one heat exchanger core plate is sealed to the corresponding portion of the other heat exchanger core plate, effectively suppressing air leakage and cross-contamination between adjacent heat exchanger core plates.

[0009] In some embodiments of this application, in two adjacent heat exchange core plates, the airflow channel port of one heat exchange core plate is sealed with the corresponding portion of the other heat exchange core plate by applying adhesive. Alternatively, in two adjacent heat exchange core plates, the airflow channel port of one heat exchange core plate is sealed with a concave-convex structure to the corresponding part of the other heat exchange core plate.

[0010] In some embodiments of this application, the heat exchange membrane is sleeved on the heat exchange core plate, and its sleeved direction is parallel to the airflow channel extension direction of the heat exchange core plate.

[0011] In some embodiments of this application, during processing, a cylindrical heat exchange membrane of the required length is prepared first; Apply adhesive to a set of opposite sides of the heat exchange core plate, then put the cylindrical heat exchange membrane onto the heat exchange core plate. After it is in place, bond the heat exchange membrane to the set of opposite sides with adhesive to form a film-coated heat exchange core plate. The coated heat exchange core plate and the uncoated heat exchange core plate are stacked alternately, and the extension directions of the airflow channels of adjacent heat exchange core plates intersect each other. The two adjacent heat exchange core plates are sealed so that the airflow channel port of one heat exchange core plate is sealed to the corresponding part of the other heat exchange core plate.

[0012] In some embodiments of this application, a total heat exchanger core is proposed, comprising: frame; A heat exchange core, which is disposed within the frame, includes multiple heat exchange core plates, which are stacked one on top of the other. Each heat exchange core plate has multiple airflow channels inside, and the extension directions of the airflow channels of two adjacent heat exchange core plates intersect each other. Each of the heat exchange core plates is wrapped with a heat exchange membrane. The heat exchange membrane is open at both ends and covers the top surface, a set of opposite side surfaces, and a set of opposite edges of the bottom surface of the heat exchange core plate. The set of opposite edges of the bottom surface are located on the same side as the set of opposite side surfaces. The heat exchange membrane is bonded to the set of opposite side surfaces. Furthermore, in two adjacent heat exchange core plates, the airflow channel port of one heat exchange core plate is sealed to the corresponding portion of the other heat exchange core plate.

[0013] In this application's total heat exchanger core, during the coating process of the heat exchange core plates, adhesive is only applied to one set of opposite sides of the core plate, instead of applying adhesive to both the top and bottom surfaces of the heat exchange core plate. This improves processing efficiency and reduces the contact area between the adhesive and the core plate, thereby increasing the overall heat exchange efficiency of the core. Furthermore, in this application's total heat exchanger core, each heat exchange core plate is covered with a heat exchange film. The heat exchange film covers the top surface, one set of opposite sides, and one set of opposite edges of the bottom surface of the heat exchange core plate. Therefore, except for the bottommost heat exchange core plate, the top surface, one set of opposite sides, and bottom surface of each other heat exchange core plate are effectively covered by the heat exchange film. Even if the adhesive between the heat exchange core plate and the heat exchange film detaches, the heat exchange film still wraps around the top surface, bottom surface, and one set of opposite sides of the heat exchange core plate, ensuring its airflow isolation function. Additionally, the airflow channel port of one heat exchange core plate is sealed to the corresponding part of the other heat exchange core plate, effectively suppressing air leakage and cross-flow between adjacent heat exchange core plates.

[0014] In some embodiments of this application, the heat exchange membrane is composed of C-shaped membranes on both sides and a sheet-like flat membrane in the middle. The cross-section of the C-shaped membrane is approximately C-shaped, and the cross-section of the sheet-like flat membrane is straight.

[0015] In some embodiments of this application, during processing, a first sheet-like heat exchange membrane and a second sheet-like heat exchange membrane of the required length are prepared first; Apply adhesive to a set of opposite sides of the heat exchange core plate, then take two pieces of the first sheet heat exchange film and stick them to the set of opposite sides of the heat exchange core plate respectively, and make the first sheet heat exchange film wrap around the set of opposite sides and the corresponding top and bottom edges of the heat exchange core plate to form C-shaped films on both sides. At this point, the semi-coated heat exchange core plate is formed. Apply adhesive to the upper surface of the C-shaped membrane, and lay a second sheet-like heat exchange membrane on the semi-coated heat exchange core plate to form a sheet-like flat membrane, so that its sides are bonded to the C-shaped membranes on both sides. Another half-film-coated heat exchange core plate is placed on the heat exchange core plate, and the extension directions of the airflow channels of the two adjacent heat exchange core plates intersect each other. Continue to bond the newly placed heat exchange core plate to form a sheet-like flat film. Repeat this process to stack multiple semi-coated heat exchange core plates one on top of the other, with the extension directions of the airflow channels of adjacent heat exchange core plates intersecting each other. The two adjacent heat exchange core plates are sealed to ensure that the airflow channel port of one heat exchange core plate is sealed to the corresponding part of the other heat exchange core plate.

[0016] In some embodiments of this application, the heat exchange membrane is an integral structure.

[0017] In some embodiments of this application, during processing, sheet-like heat exchange membranes of the required length are prepared first; Apply adhesive to a set of opposite sides of the heat exchange core plate, then take a sheet heat exchange film and wrap it around the top surface, a set of opposite sides, and a set of opposite edges of the bottom surface of the heat exchange core plate, and bond the sheet heat exchange film to the adhesive-coated set of opposite sides to form a semi-film-coated heat exchange core plate. Multiple semi-coated heat exchange core plates are stacked one on top of the other, and the airflow channels of adjacent heat exchange core plates extend in opposite directions. The two adjacent heat exchange core plates are sealed to ensure that the airflow channel port of one heat exchange core plate is sealed to the corresponding part of the other heat exchange core plate.

[0018] In some embodiments of this application, a total heat exchanger is also proposed, including the total heat exchanger core described above. Attached Figure Description

[0019] Figure 1 This is an exploded view of the heat exchange core of a total heat exchanger in the prior art; Figure 2 This is a perspective view of the total heat exchanger core in Embodiment 1 of the present invention; Figure 3 This is a perspective view of the film-coated heat exchange core plate of the total heat exchanger core in Embodiment 1 of the present invention; Figure 4 yes Figure 3 Exploded view; Figure 5 This is a perspective view of the uncoated heat exchange core plate of the total heat exchanger core in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the staggered stacking structure of the heat exchange core plate, taking a three-layer heat exchange core plate as an example in Embodiment 1 of the present invention; Figure 7 This is a perspective view of the heat exchange core plate with a concave-convex structure in Embodiment 1 of the present invention; Figure 8 This is a perspective view of the film-coated heat exchange core plate of the total heat exchanger core in Embodiment 2 of the present invention; Figure 9 yes Figure 8 Exploded view; Figure 10 This is a schematic diagram of the staggered stacking structure of the heat exchange core plates, taking two layers of heat exchange core plates as an example, in Embodiment 2 of the present invention; Figure 11 This is a schematic diagram of the coated heat exchange core plate structure in Embodiment 2 of the present invention when the heat exchange membrane is an integral structure.

[0020] Figure 1 Chinese figure reference numerals: 1-Heat exchange core plate; 1.1-Airflow channel; 2-Heat exchange membrane; Figures 2 to 11 Chinese figure reference numerals: 100-frame; 110-upper cover plate; 120-lower cover plate; 130-fixed bracket; 200-heat exchange core; 210-heat exchange core body; 211-airflow channel; 212-top surface; 213-bottom surface; 214-side surface; 215-edge to be sealed; 216-strip protrusion; 217-strip groove; 220-heat exchange membrane; 221-C-shaped membrane; 222-sheet flat membrane. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "inner", "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 this application 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 this application.

[0023] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Air conditioners execute a refrigeration cycle using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle involves a series of processes including compression, condensation, expansion, and evaporation, supplying refrigerant to the conditioned and heat-exchanged air.

[0026] The compressor compresses refrigerant gas under high temperature and pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0027] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve, returning the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0028] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0029] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0030] The principle of air conditioning cooling and heating is as follows: The compressor compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state and sends it to the condenser for cooling. The medium-temperature liquid refrigerant is throttled and depressurized by the expansion valve (throttling component), becoming a low-temperature, low-pressure gas-liquid mixture (more liquid). This mixture absorbs heat from the air and vaporizes in the evaporator, turning back into a gaseous state. It then returns to the compressor for further compression, continuing the cycle of cooling. During heating, a four-way valve reverses the flow direction of the refrigerant between the condenser and evaporator compared to cooling. Therefore, during heating, the outdoor unit blows cold air, while the indoor unit blows hot air.

[0031] To regulate indoor air quality and preheat or precool the incoming fresh air by recovering waste heat from exhaust gas, some air conditioning systems are equipped with total heat exchangers. The core structure of the total heat exchanger and the present application's total heat exchanger are described in detail below through several specific embodiments. Example

[0032] This embodiment of the total heat exchanger includes a total heat exchanger core, and of course, other structural components of existing total heat exchangers, such as the power system, filtration system, control system, noise reduction system, and housing, which will not be elaborated here. (Refer to...) Figures 2 to 7 In this embodiment, the core of the total heat exchanger includes a frame 100 and a heat exchange core 200. The frame 100 specifically includes an upper cover plate 110, a lower cover plate 120, and multiple vertically arranged fixing brackets 130 connecting the upper cover plate 110 and the lower cover plate 120. The upper cover plate 110, the lower cover plate 120, and the multiple fixing brackets 130 are fixed together by screws. The heat exchange core 200 is disposed within the frame 100 and includes multiple heat exchange core plates 210. The multiple heat exchange core plates 210 are stacked vertically, and each heat exchange core plate 210 has multiple airflow channels 211 inside. The extension directions of the airflow channels 211 of adjacent heat exchange core plates 210 intersect each other.

[0033] like Figures 2 to 6 In this embodiment, the heat exchange core plate 210 is a square core plate. The airflow channel 211 is a horizontal channel with a corrugated cross section. Multiple airflow channels 211 are parallel to each other, and the extension directions of the airflow channels 211 of two adjacent heat exchange core plates 210 are perpendicular to each other.

[0034] Of two adjacent heat exchange core plates 210, one of the heat exchange core plates 210 is wrapped with a heat exchange membrane 220, such as Figure 6 In the three adjacent heat exchange core plates 210 shown, the bottom heat exchange core plate 210 is a conventional heat exchange core plate 210 without a membrane, the middle heat exchange core plate 210 is a membrane-coated heat exchange core plate 210, and any heat exchange membrane 220 is a cylindrical shape with open ends. Its material is the same as that of existing heat exchange membranes, that is, a membrane that can isolate airflow but allows water molecules to pass through. The axial direction of the heat exchange membrane 220 is parallel to the extension direction of the airflow channel 211 of the heat exchange core plate 210. The heat exchange membrane 220 covers the top surface 212, bottom surface 213 and a set of opposite side surfaces 214 of the heat exchange core plate 210. In this embodiment, the set of opposite side surfaces 214 are two opposite side surfaces 214 parallel to the extension direction of the airflow channel 211. The heat exchange membrane 220 is bonded to the two opposite side surfaces 214, as shown. Figure 4As shown, the two sides 214 are the adhesive bonding surfaces. Furthermore, in two adjacent heat exchange core plates 210, the airflow channel 211 port of one heat exchange core plate 210 is sealed to the corresponding portion of the other heat exchange core plate 210, ensuring a seal between the edge of the airflow channel 211 port and the corresponding edge of the adjacent heat exchange core plate 210, preventing air leakage. Figure 6 As shown, the edge that needs to be sealed is indicated by reference numeral 215 in the attached drawing.

[0035] In this embodiment of the total heat exchanger core, when coating the heat exchange core plate, adhesive is only applied to one set of opposite sides of the core plate, instead of applying adhesive to both the top and bottom surfaces of the heat exchange core plate. This improves processing efficiency and reduces the contact area between the adhesive and the core plate, thereby improving the overall heat exchange efficiency of the core. Furthermore, even if the adhesive between the heat exchange core plate and the heat exchange membrane detaches, the heat exchange membrane still covers the top, bottom, and one set of opposite sides of the heat exchange core plate, ensuring its airflow isolation function. Additionally, the airflow channel port of one heat exchange core plate is sealed to the corresponding portion of the other heat exchange core plate, effectively suppressing air leakage and cross-flow between adjacent heat exchange core plates.

[0036] For two adjacent heat exchange core plates 210, the seal between the airflow channel 211 port of one heat exchange core plate 210 and the corresponding port of the other heat exchange core plate 210 can be achieved by applying adhesive; or, a convex-concave structure can be provided on the airflow channel 211 port of one heat exchange core plate 210 and the corresponding port of the other heat exchange core plate for a sealing fit. For example... Figure 7 As shown, taking one of the heat exchange core plates 210 as an example, strip-shaped protrusions 216 are formed on the top surface 212 near the two ends of the airflow channel 211. The two ends of the strip-shaped protrusions 216 are flush with the two side surfaces 214. A strip-shaped groove 217 extending perpendicularly to the strip-shaped protrusions 216 is formed on the bottom surface 213 of the heat exchange core plate 210. When the two heat exchange core plates 210 are stacked vertically and alternately, the strip-shaped groove 217 on the upper heat exchange plate 210 is aligned with the strip-shaped protrusion 216 on the lower heat exchange core plate 210. The corresponding edge of the heat exchange membrane 220 is sandwiched between the strip-shaped groove 217 on the upper heat exchange plate 210 and the strip-shaped protrusion 216 on the lower heat exchange core plate 210, ensuring the seal at this point.

[0037] In this embodiment, the heat exchange membrane 220 is a complete cylindrical structure, which is wrapped around the heat exchange core plate 210 by means of a sleeve, and its sleeve direction is parallel to the extension direction of the airflow channel 211 of the heat exchange core plate 210. This type of heat exchange membrane 220 has a simple installation structure on the heat exchange core plate 210 and is easy to implement.

[0038] During processing, first prepare a cylindrical heat exchange membrane 220 of the required length; then apply adhesive to a set of opposite sides 214 of the heat exchange core plate 210, and fit the cylindrical heat exchange membrane 220 onto the heat exchange core plate 210. After fitting it in place, bond the heat exchange membrane 220 to the adhesive-coated side 214 to form a film-coated heat exchange core plate 210. Figure 3 As shown; a lower cover plate 120 is laid, and the coated heat exchange core plates 210 and the uncoated heat exchange core plates 210 are stacked alternately on the lower cover plate 120, ensuring that the extension directions of the airflow channels 211 of adjacent heat exchange core plates 210 intersect each other, as shown. Figure 2 and Figure 6 As shown; the two adjacent heat exchange core plates 210 are sealed, so that the airflow channel 211 port of one heat exchange core plate 210 is sealed with the corresponding part of the other heat exchange core plate 210. After all the heat exchange core plates 210 are placed, a heat exchange core 200 is formed. The side of the heat exchange core 200 is then sealed and fixed with a fixing bracket 130. The fixing bracket 130 and the heat exchange core 200 are sealed by applying glue or placing a sealing material. Finally, the heat exchange core 200 is pressed with the upper cover plate 110 and fixed with screws to form a frame 100 to fix the heat exchange core 200.

[0039] Of course, in addition to square shapes, the heat exchange core plate 210 can also be rectangular, rhomboid, parallelogram, hexagonal, polygonal, etc., and the airflow channel is not limited to corrugated, rectangular, square, triangular, etc. Example

[0040] Reference Figures 8 to 10 The heat exchanger core of this embodiment includes a frame 100 and a heat exchange core 200. The frame 100 specifically includes an upper cover plate 110, a lower cover plate 120, and multiple vertically arranged fixing brackets 130 connecting the upper cover plate 110 and the lower cover plate 120. The upper cover plate 110, the lower cover plate 120, and the multiple fixing brackets 130 are fixed together by screws. The heat exchange core 200 is disposed within the frame 100 and includes multiple heat exchange core plates 210. The multiple heat exchange core plates 210 are stacked vertically, and each heat exchange core plate 210 has multiple airflow channels 211 inside. The extension directions of the airflow channels 211 of adjacent heat exchange core plates 210 intersect each other.

[0041] like Figures 8 to 10 As shown, in this embodiment, the heat exchange core plate 210 is still a square core plate. The airflow channel 211 is a horizontal channel with a corrugated cross section. Multiple airflow channels 211 are parallel to each other, and the extension directions of the airflow channels 211 of two adjacent heat exchange core plates 210 are perpendicular to each other.

[0042] Each heat exchange core plate 210 is covered with a heat exchange membrane 220. The heat exchange membrane 220 is open at both ends and is made of the same material as existing heat exchange membranes, i.e., a membrane that can isolate airflow but allows water molecules to pass through. The axial direction of the heat exchange membrane 220 is parallel to the extension direction of the airflow channel 211 of the heat exchange core plate 210. The heat exchange membrane 220 covers the top surface 212, a set of opposite side surfaces 214, and a set of opposite edges of the bottom surface 213 of the heat exchange core plate 210. The set of opposite edges of the bottom surface 213 are located on the same side as the set of opposite side surfaces 214. The heat exchange membrane 220 is bonded to the set of opposite side surfaces 214. Figure 9 As shown, the two sides 214 are the adhesive bonding surfaces.

[0043] Furthermore, in two adjacent heat exchange core plates 210, the airflow channel port of one heat exchange core plate 210 is sealed with the corresponding portion of the other heat exchange core plate 210, ensuring a seal between the edge of the airflow channel 211 port and the corresponding edge of the adjacent heat exchange core plate 210, thus preventing air leakage. Figure 10 As shown, the edge requiring sealing is indicated by reference numeral 215 in the attached drawing.

[0044] In this embodiment of the full heat exchanger core, when coating the heat exchange core plates, adhesive is only applied to one set of opposite sides of the core plate, instead of applying adhesive to both the top and bottom surfaces of the heat exchange core plate. This improves processing efficiency and reduces the contact area between the adhesive and the core plate, thereby improving the overall heat exchange efficiency of the core. Furthermore, in this application's full heat exchanger core, each heat exchange core plate is covered with a heat exchange film. The heat exchange film covers the top surface, one set of opposite sides, and one set of opposite edges of the bottom surface of the heat exchange core plate. Therefore, except for the bottommost heat exchange core plate, the top surface, one set of opposite sides, and bottom surface of each other heat exchange core plate are effectively covered by the heat exchange film. Even if the adhesive between the heat exchange core plate and the heat exchange film detaches, the heat exchange film still wraps around the top surface, bottom surface, and one set of opposite sides of the heat exchange core plate, ensuring its airflow isolation function. Additionally, the airflow channel port of one heat exchange core plate is sealed to the corresponding part of the other heat exchange core plate, effectively suppressing air leakage and cross-flow between adjacent heat exchange core plates.

[0045] In one specific implementation, the heat exchange membrane 220 in this embodiment is formed by splicing C-shaped membranes 221 on both sides and a sheet-like flat membrane 222 in the middle. The cross-section of the C-shaped membrane 221 is approximately C-shaped, and the cross-section of the sheet-like flat membrane 222 is straight. The C-shaped membrane 221 wraps around the two side surfaces 214, and the sheet-like flat membrane 222 covers the top surface 212. The two side edges of the sheet-like flat membrane 222 are bonded to the corresponding C-shaped membranes 221, thereby forming the C-shaped membrane 221.

[0046] When processing the heat exchange membrane with this structure, the required length of the first sheet heat exchange membrane and the second sheet heat exchange membrane are first prepared. Adhesive is applied to a set of opposite sides 214 of the heat exchange core plate 210. Then, two sheets of the first sheet heat exchange membrane are respectively bonded to the set of opposite sides 214 of the heat exchange core plate 210, and the first sheet heat exchange membrane is wrapped around the set of opposite sides 214 and the corresponding top and bottom edges of the heat exchange core plate to form C-shaped membranes 221 on both sides. At this point, the semi-coated heat exchange core plate is formed. Adhesive is applied to the upper surface b of the C-shaped membrane 221, and a second sheet-like heat exchange membrane is laid on the semi-coated heat exchange core plate 210 to form a sheet-like flat membrane 222, so that its sides are bonded to the C-shaped membranes 221 on both sides. Another half-film-coated heat exchange core plate is placed on the heat exchange core plate 210, and the extension directions of the airflow channels of the two adjacent heat exchange core plates intersect each other. Continue to bond a sheet-like flat film 222 onto the newly placed heat exchange core plate 210, and repeat this process to stack multiple semi-coated heat exchange core plates 210 one on top of the other, with the extension directions of the airflow channels 211 of adjacent heat exchange core plates 210 intersecting each other. The two adjacent heat exchange core plates 210 are sealed to seal the airflow channel port of one heat exchange core plate 210 with the corresponding part of the other heat exchange core plate 210.

[0047] As another implementation method, the heat exchange membrane 220 can also be a one-piece structure, such as... Figure 11 As shown, it is a single sheet covering the top surface 212, a set of opposite sides 214, and a set of opposite edges of the bottom surface 213 of the heat exchange plate 210. During processing, a sheet of heat exchange film of the required length is prepared first; adhesive is applied to a set of opposite sides of the heat exchange core plate 210; then, a sheet of heat exchange film 220 is taken and wrapped around the top surface 212, a set of opposite sides 214, and a set of opposite edges of the bottom surface 213 of the heat exchange core plate 210, and the sheet of heat exchange film is bonded to the adhesive-coated set of opposite sides to form a semi-film-coated heat exchange core plate; multiple semi-film-coated heat exchange core plates 210 are stacked vertically, with the extension directions of the airflow channels 211 of adjacent heat exchange core plates 210 intersecting each other; adjacent heat exchange core plates 210 are sealed, so that the port of the airflow channel 211 of one heat exchange core plate 210 is sealed to the corresponding portion of the other heat exchange core plate 210.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A total heat exchanger core, comprising: frame; A heat exchange core, which is disposed within the frame, includes multiple heat exchange core plates, which are stacked one on top of the other. Each heat exchange core plate has multiple airflow channels inside, and the extension directions of the airflow channels of two adjacent heat exchange core plates intersect each other. The feature is that, in two adjacent heat exchange core plates, the airflow channel port of one heat exchange core plate is sealed to the corresponding portion of the other heat exchange core plate; Furthermore, the heat exchange core plate is wrapped with a heat exchange membrane, which is open at both ends and is composed of C-shaped membranes on both sides and a sheet-like flat membrane in the middle. The C-shaped membrane wraps a set of opposite sides and a set of opposite edges on the bottom surface of the heat exchange core plate. The set of opposite edges on the bottom surface are located on the same side as the set of opposite sides. The sheet-like flat membrane covers the top surface of the heat exchange core plate and its two side edges are bonded to the C-shaped membrane on the corresponding side. During processing, first prepare the first and second sheet-shaped heat exchange membranes of the required lengths; Apply adhesive to a set of opposite sides of the heat exchange core plate, then take two pieces of the first sheet heat exchange film and stick them to the set of opposite sides of the heat exchange core plate respectively, and make the first sheet heat exchange film wrap around the set of opposite sides and the corresponding top and bottom edges of the heat exchange core plate to form C-shaped films on both sides. At this point, the semi-coated heat exchange core plate is formed. Apply adhesive to the upper surface of the C-shaped membrane, and lay a second sheet-like heat exchange membrane on the semi-coated heat exchange core plate to form a sheet-like flat membrane, so that its sides are bonded to the C-shaped membranes on both sides. Another half-film-coated heat exchange core plate is placed on the heat exchange core plate, and the extension directions of the airflow channels of the two adjacent heat exchange core plates intersect each other. Continue to bond the newly placed heat exchange core plate to form a sheet-like flat film. Repeat this process to stack multiple semi-coated heat exchange core plates one on top of the other, with the extension directions of the airflow channels of adjacent heat exchange core plates intersecting each other. The two adjacent heat exchange core plates are sealed to ensure that the airflow channel port of one heat exchange core plate is sealed to the corresponding part of the other heat exchange core plate.

2. A total heat exchanger, characterized in that, Includes the total heat exchanger core as described in claim 1.

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