Heat exchange element, total heat exchange core, air treatment equipment and method for manufacturing heat exchange element

Abstract

The heat exchange element comprises a heat exchange sheet, wherein the heat exchange sheet at least comprises a functional layer and a base material layer; the frame comprises at least one separation rib, and the frame is attached to the heat exchange pieces so as to support the heat exchange pieces. Wherein the functional layer and the base material layer are arranged in an overlapped mode, so that the heat exchange piece forms a stacked structure, and the frame is attached to the face, on one side of the base material layer, of the heat exchange piece. In the heat exchange sheet with the structure, the separation ribs in the frame of the heat exchange sheet are only arranged on one side of the base material layer, so that the damage to the functional layer of the heat exchange sheet can be effectively avoided or at least obviously reduced in the process of forming the frame through injection molding. The invention further relates to a total heat exchange core with the heat exchange element and air treatment equipment comprising the total heat exchange core, and further relates to a method for manufacturing the heat exchange element.

Description

Technical Field

[0001] This application belongs to the field of air handling equipment, specifically relating to heat exchange elements, total heat exchange cores composed of the heat exchange elements, and air handling equipment including the total heat exchange cores, and also to a method of manufacturing the heat exchange elements. Background Technology

[0002] Air handling equipment is increasingly used in people's lives and workplaces to regulate indoor air, such as adjusting indoor air temperature and humidity, in order to improve people's comfort.

[0003] Some types of air handling equipment, such as total heat exchangers, incorporate a total heat exchange core. Air exhausted to the outside and air introduced into the room can exchange heat and moisture within this core, resulting in optimal temperature and humidity conditions for the air introduced into the room. A total heat exchange core is typically formed by stacking multiple heat exchange elements. These stacked elements create intersecting airflow channels in adjacent layers, allowing both exhaust air and introduced air to pass through, facilitating heat or moisture exchange between the two airflows.

[0004] The heat exchange element includes heat exchange plates and a frame formed on the heat exchange plates. The heat exchange plates have heat exchange or moisture permeation functions, allowing water vapor to migrate from one side of the heat exchange plates to the other side, thereby realizing the water vapor exchange function. The frame serves to support the heat exchange plates and also includes at least one partition rib. This partition rib provides strength to the heat exchange element, preventing it from easily bending and deforming due to gravity. Furthermore, airflow channels can be formed between adjacent partition ribs to allow air to flow through.

[0005] In existing heat exchange elements, a frame including partition ribs is provided on both sides of the heat exchange plate, and the frame is attached to the heat exchange plate by a process such as injection molding. However, if the injection molding temperature of the frame is not controlled within an appropriate range during the attachment process, for example, if the injection molding temperature is too high, the functional layers such as the moisture-permeable membrane on the heat exchange plate will be damaged by heat, thereby impairing the function of the heat exchange plate.

[0006] Therefore, in the prior art, there is a need to improve the structure of the heat exchange elements of air handling equipment, especially its total heat exchange core, in order to avoid damaging the function of the heat exchange fins during the manufacturing process. Summary of the Invention

[0007] This application is made to solve the technical problems existing in the prior art. The purpose of this application is to provide a heat exchange element with improved structure, which helps to reduce the risk of functional damage to the heat exchange element during the manufacturing process. This application also provides a total heat exchange core composed of heat exchange elements and an air handling device including the total heat exchange core, and further provides a method for manufacturing the heat exchange element.

[0008] The heat exchange element of this application includes: a heat exchange plate, the heat exchange plate including at least a functional layer and a substrate layer; and a frame, the frame including at least two partition ribs, with airflow channels formed between adjacent partition ribs for airflow, the frame being formed on the heat exchange plate to support the heat exchange plate. The functional layer and the substrate layer are arranged overlappingly, thereby forming a laminated structure for the heat exchange plate, wherein the frame is formed on one side of the substrate layer of the heat exchange plate.

[0009] In the heat exchanger with the above structure, the partition ribs in the frame of the heat exchanger are only set on one side of the base material layer. In this way, during the injection molding process of forming the frame, damage to the functional layer of the heat exchanger can be effectively avoided or at least significantly reduced.

[0010] Preferably, the functional layer includes a moisture-absorbing material, allowing water molecules to be adsorbed onto it. Furthermore, the functional layer is configured to block substances such as CO2 molecules, viruses, and bacteria. Correspondingly, a moisture-permeable structure is formed on the substrate layer, allowing water molecules adsorbed on the functional layer to pass through. This moisture-permeable structure can be, for example, moisture-permeable pores formed on the substrate layer. The functional layer and substrate layer, configured as described above, work together to allow the heat exchanger to block harmful components such as CO2 molecules, viruses, and bacteria from the air, while simultaneously allowing moisture and heat to pass through, thereby effectively treating the air supplied to the room.

[0011] The thickness of the substrate layer should be greater than the thickness of the functional layer to provide sufficient strength to the heat exchanger. Preferably, the thickness of the substrate layer is 10 to 20 micrometers, and the thickness of the functional layer is 0.5 to 1 micrometer. For example, in a more preferred embodiment, the thickness of the substrate layer may specifically be 15 micrometers, and the thickness of the functional layer may specifically be 0.7 micrometers.

[0012] Preferably, the frame further includes reinforcing ribs that extend intersecting with the partition ribs and are formed on one side of the substrate layer of the heat exchanger. The reinforcing ribs improve the structural strength of the heat exchange element and support the heat exchanger, preventing deformation and affecting heat exchange efficiency.

[0013] Preferably, an indicator portion is formed on the heat exchange plate to indicate the substrate layer and functional layer of the heat exchange plate.

[0014] More specifically, the indicator may be formed on one of the substrate layer or the functional layer, and includes at least one of the following structures: a notched corner, a raised dot, printed text, or a marking symbol.

[0015] By setting an indicator section, it is possible to prevent the frame from being formed onto the functional layer of the heat exchanger during the processing of the heat exchange element, which would damage the functional layer and affect the performance of the heat exchanger.

[0016] Preferably, the heat exchange fins and frame are formed integrally. This integrally formed structure is simple, easy to process, and the integrally formed heat exchange fins and frame can facilitate the subsequent stacking of multiple heat exchange elements to form a total heat exchange core.

[0017] Preferably, the substrate layer is formed of at least one of a metallic material, a plastic material, and a fibrous material. The metallic material may be, for example, aluminum foil; the plastic material may be, for example, polypropylene or polyethylene; and the fibrous material may be, for example, paper. Alternatively, other materials may be used to form the substrate layer, such as polymers, molecular sieves, graphene, zeolites, modified materials, and composite chemical materials.

[0018] Preferably, the stiffener is configured to connect two or more partition ribs. Here, it is not necessary for the stiffener to connect all the partition ribs together. Furthermore, if the width of the stiffener is d, then the range of width d is 0 mm < d ≤ 5 mm. This configuration of the stiffener can improve the strength of the frame while minimizing the contact area between the stiffener and the substrate layer, and can reduce the impact on airflow pathways.

[0019] Preferably, let A be the distance between two adjacent partition ribs, where the range of distance A is 5mm ≤ A ≤ 15mm. This range of partition rib distances can provide the frame with the required strength while effectively reducing the impact on airflow.

[0020] In one embodiment, the frame is formed of a plastic material, which may be, for example, at least one of polypropylene, polyethylene, and acrylonitrile-styrene-butadiene copolymer (ABS).

[0021] Furthermore, the substrate layer in the heat exchanger can be made of the same material as the frame, so that when the frame is attached to the substrate layer by means of heat fusion or other methods, they can be more easily bonded together.

[0022] Preferably, the frame also includes a border with baffles formed thereon. These baffles prevent gas leakage in the airflow channels. Additionally, in cases where two heat exchange elements are joined together by adhesive, the baffles also prevent or at least reduce the risk of adhesive spilling onto the heat exchange plates.

[0023] This application also relates to a total heat exchange core comprising a plurality of heat exchange elements stacked as described above.

[0024] Specifically, the heat exchange core includes two types of heat exchange elements, namely a first heat exchange element and a second heat exchange element. Preferably, a protrusion is formed on the frame edge of the first heat exchange element, and a recess is formed on the frame edge of the second heat exchange element. The protrusion and the recess can engage with each other to form an engaging connection. Further, at least one of the protrusion and the recess has a first baffle. When the first and second heat exchange elements are stacked together, the first baffle can abut against the recess to form a seal, thereby acting as an anti-overflow adhesive structure. This anti-overflow adhesive structure can avoid or at least reduce the risk of adhesive leakage or overflow onto the heat exchange plates.

[0025] Further preferably, the anti-overflow adhesive structure also includes a second baffle. The second baffle is formed in at least one of the protrusion and the recess, and is located closer to the inner side of the heat exchange element than the first baffle. This second baffle helps to further ensure prevention of adhesive leakage.

[0026] This application also relates to an air handling device that includes a total heat exchange core as described above. Air handling devices may include, for example, total heat exchangers, fresh air units, humidifiers, and indoor units of air conditioners with ventilation functions.

[0027] This application also relates to a method for manufacturing a heat exchange element, the method comprising the following steps:

[0028] a. Provide a heat exchange plate, wherein a functional layer and a substrate layer are stacked, and the heat exchange plate is placed in a mold;

[0029] b. Injecting molding into a mold to form a frame bonded to the heat exchanger, wherein the frame is bonded to one side of the substrate layer;

[0030] During injection molding, the temperature of the injection material is controlled within the range of 220 to 290°C, and the cavity temperature of the injection mold is controlled within the range of 10 to 50°C. Attached Figure Description

[0031] The specific embodiments of the present invention can be more clearly understood from the structure shown in the accompanying drawings, in which:

[0032] Figure 1 A perspective view of the air handling device of this application is shown, wherein the air handling device is in a position with its base plate facing upward.

[0033] Figure 2 It shows Figure 1A bottom view of an air handling unit, in which the base plate of the air handling unit has been removed, exposing its internal structure.

[0034] Figure 3 It shows Figure 1 A schematic perspective view of the inner casing of an air handling unit.

[0035] Figure 4 The setting is shown Figure 3 An enlarged view of the total heat exchange core mounting section in the inner casing.

[0036] Figure 5 It shows Figure 1 A schematic three-dimensional view of the total heat exchange core in an air handling unit.

[0037] Figure 6 It shows Figure 5 A partially exploded schematic diagram of the total heat exchange core.

[0038] Figure 7 A schematic perspective view of the heat exchange elements of the total heat exchange core is shown.

[0039] Figure 8 A side view of the heat exchange element is shown, schematically illustrating its stacked structure.

[0040] Figure 9 yes Figure 7 A partial enlarged view of part I in the image, showing the anti-overflow adhesive structure on the frame.

[0041] Figure 10 The anti-overflow adhesive structure is shown in a schematic cross-sectional view.

[0042] (Symbol Explanation)

[0043] 100 air handling equipment

[0044] 110 Equipment Housing

[0045] 111 Install inspection cover

[0046] 112 New Opportunities

[0047] 113 air outlet

[0048] 114 return air vent

[0049] 115 exhaust vent

[0050] 116 Inner Shell

[0051] 117 Sheet metal embedded parts

[0052] 118 cable tray

[0053] 121 Exhaust Fan

[0054] 122 air supply fan

[0055] 123 Sensors

[0056] 130 Total Heat Exchanger Core Installation Section

[0057] 131 core mounting rail

[0058] 132 filter screen mounting rail

[0059] 141 Anti-fall strip

[0060] 151 PM2.5 Filter

[0061] 152 primary screening filter

[0062] 200 Total Heat Exchanger Core

[0063] 210 Installation Column

[0064] 221 first heat exchange elements

[0065] 222 Second heat exchange element

[0066] 230 heat exchanger

[0067] 231 Substrate Layer

[0068] 232 Functional Layer

[0069] 240 frame

[0070] 241 dividing bar

[0071] 242 reinforcing rib

[0072] 243 border

[0073] 244 anti-overflow adhesive structure

[0074] 245 convex part

[0075] 246 recess

[0076] 247 First Bar

[0077] 248 Second Bar Detailed Implementation

[0078] To facilitate understanding of this application, the specific embodiments of the air handling equipment and its total heat exchange core and heat exchange elements of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments shown in the drawings are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to this application based on the embodiments shown in the drawings, and the technical features of the different embodiments described below can be arbitrarily combined without contradiction.

[0079] Figure 1 A schematic perspective view of an air handling device 100 according to this application is shown. This air handling device 100 may be, for example, a total heat exchanger, a fresh air unit, a humidifier, or an indoor unit of an air conditioner with ventilation function. The air handling device 100 includes a housing 110, in which components such as fans and heat exchangers (e.g., total heat exchange cores) are housed within the space defined by the housing 110. Figure 1 As can be seen, an installation and maintenance cover 111 is formed on the equipment housing 110. The installation and maintenance cover 111 is closable and can be installed on the equipment housing 110, thereby allowing the maintenance port on the equipment housing 110 to be opened and closed.

[0080] The access cover 111 can be pivotally connected to the equipment housing 110 via a structure such as a pivot, or it can be detachably or openably connected to the equipment housing 110 in other ways known in the art. Generally, in the installed state, the portion of the equipment housing 110 shown in the figure where the access cover 111 is installed is a bottom plate facing downwards. In this case, it is preferable to also provide a cover anti-fall mechanism, such as a connecting rope, a latch, etc.

[0081] Go to Figure 2 The bottom plate of the equipment housing 110 is removed to expose the internal structure housed within the air handling unit 100. A fresh air inlet 112, a supply air inlet 113, a return air inlet 114, and an exhaust air inlet 115 are respectively provided on two opposite side walls of the equipment housing 110. The fresh air inlet 112 and the exhaust air inlet 115 open to the outside, while the supply air inlet 113 and the return air inlet 114 open to the inside. Furthermore, the fresh air inlet 112 and the supply air inlet 113 are located at two opposite corners of the equipment housing 110 along one diagonal, while the return air inlet 114 and the exhaust air inlet 115 are located at two opposite corners of the equipment housing 110 along the other diagonal.

[0082] In addition to the preferred diagonal arrangement structure mentioned above, the fresh air inlet 112 and the supply air outlet 113, as well as the return air outlet 114 and the exhaust air outlet 115, can also be arranged non-diagonally. For example, the fresh air inlet 112 and the supply air outlet 113 can be arranged near the two ends on the same side of the equipment housing 110, and the return air outlet 114 and the exhaust air outlet 115 can be arranged near the two ends on the opposite side of the equipment housing 110.

[0083] The air handling unit 100 is equipped with an exhaust fan 121 and an air supply fan 122. Both the exhaust fan 121 and the air supply fan 122 can be centrifugal fans. The exhaust fan 121 is connected to the exhaust port 115, and the air supply fan 122 is connected to the air supply port 113. Of course, the exhaust fan 121 can also be located near the return air port 114, and the air supply fan 122 can be located near the fresh air port 112, which is also within the scope of this application.

[0084] The air handling unit 100 also includes a total heat exchange core assembly, which includes a total heat exchange core 200. It may also include a total heat exchange core mounting part 130 for fixing the total heat exchange core 200 to the equipment housing 110, and various filters disposed on the side surface of the total heat exchange core 200. The total heat exchange core 200 is located between the fresh air inlet 112 and the supply air outlet 113, and between the return air outlet 114 and the exhaust air outlet 115. In one operating mode of the air handling unit 100, the exhaust fan 121 and the supply fan 122 are turned on. Outdoor air is drawn into the fresh air inlet 112 by the supply fan 122, flows through the total heat exchange core 200, and then enters the room through the supply air outlet 113. Indoor air is drawn into the return air outlet 114 by the exhaust fan 121, flows through the total heat exchange core 200, and then is exhausted to the outside through the exhaust air outlet 115. As can be seen, the air from the outside and the air from the inside form a crossflow in the total heat exchange core 200, and heat exchange and water vapor exchange occur between them.

[0085] Preferably, a PM2.5 filter 151 is also provided between the total heat exchange core 200 and the air supply fan 122, so as to filter out PM2.5 particles in the air before it enters the room. The PM2.5 filter 151 shown in the figure is roughly L-shaped. In some other cases, the PM2.5 filter 151 may also be straight.

[0086] Preferably, a primary filter 152 is installed at at least one of the sides of the total heat exchange core 200 facing the fresh air inlet 112 and the return air inlet 114. The primary filter 152 is capable of filtering out larger particles of impurities in the air before it enters the total heat exchange core 200, so as to prevent large particles of impurities in the air from damaging the membrane heat exchange elements in the total heat exchange core 200.

[0087] In addition to the structure shown in the diagram, both the PM2.5 filter 151 and the pre-screen filter 152 can be placed near the fresh air inlet 112. The types of PM2.5 filter 151 and pre-screen filter 152 can be, for example, activated carbon filters, electrostatic precipitators, etc.

[0088] Sensors 123 may preferably be installed between the fresh air inlet 112 and the total heat exchange core 200, and between the return air inlet 114 and the total heat exchange core 200, to detect the air quality entering the air handling unit 100. These sensors may include, for example, PM2.5 sensors, CO2, TVOC sensors, formaldehyde sensors, odor sensors, temperature sensors, humidity sensors, etc.

[0089] Preferably, the air handling unit 100 also includes a fall-prevention strip 141, which, when installed, presses against the total heat exchange core 200, thus preventing the total heat exchange core 200 from accidentally falling off when the installation and maintenance cover 111 is opened for maintenance.

[0090] The anti-fall strip 141 can extend along the diagonal of the total heat exchange core 200, with its two ends respectively fixed to the total heat exchange core mounting portion 130 at the two opposite corners of the total heat exchange core 200 along its diagonal. In other exemplary structures, the anti-fall strip 141 can extend parallel to the side of the total heat exchange core 200, with its two ends fixed to the bottom plate of the equipment housing 110.

[0091] The air handling unit 100 may further include an inner housing 116 disposed inside the unit housing 110, the inner housing 116 preferably being made of foamed material and including a plurality of support portions, such as Figure 3 As shown in the diagram. Preferably, a sheet metal embedded part 117 may be provided in the inner shell 116 of the foamed material for functions such as wiring. A wire channel 118 may also be provided in the inner shell 116 for wiring. Furthermore, a total heat exchange core mounting part 130 may also be provided on the inner shell 116, such as... Figure 3 The four total heat exchange core mounting portions 130 shown correspond to the four corners of the total heat exchange core 200. The total heat exchange core mounting portions 130 may be made of metal.

[0092] Figure 4An enlarged view of the total heat exchange core mounting portion 130 is shown, wherein the total heat exchange core mounting portion 130 preferably integrally forms a core mounting guide rail 131 and a filter screen mounting guide rail 132. The four corners of the total heat exchange core 200 can be inserted into the corresponding core mounting guide rail 131 of the total heat exchange core mounting portion 130, thereby completing the fixed installation of the total heat exchange core 200. The two sides of the primary screening filter 152 can be inserted into the corresponding filter screen mounting guide rail 132 of the total heat exchange core mounting portion 130, thereby completing the installation of the primary screening filter 152.

[0093] The following will combine Figures 5-9 This describes the specific structure of the total heat exchange core 200 and the heat exchange elements that make up the total heat exchange core 200.

[0094] The total heat exchange core 200 includes multiple heat exchange elements, specifically multiple first heat exchange elements 221 and multiple second heat exchange elements 222, which are alternately stacked. Preferably, the total heat exchange core 200 also includes multiple mounting posts 210 that can pass through holes around the first and second heat exchange elements 221 and 222, thereby achieving the stacked positioning of the multiple heat exchange elements. This structure helps to ensure accurate positioning between the first and second heat exchange elements 221 and 222 during the assembly and processing of the total heat exchange core 200.

[0095] The basic structure of a heat exchange element will be explained below using the first heat exchange element 221 as an example. Figure 7 As shown, the first heat exchange element 221 includes a heat exchange plate 230 and a frame 240. The frame 240 is formed on one side of the heat exchange plate 230, for example, by injection molding or other means, and preferably integrally formed with the heat exchange plate 230. In addition to injection molding, the frame 240 can also be formed on the heat exchange plate 230 by adhesive bonding, hot melting, or other means.

[0096] The frame 240 includes a plurality of partition ribs 241 that extend generally parallel along a first direction, forming airflow channels between adjacent partition ribs 241. The frame 240 may also include a plurality of reinforcing ribs 242 that extend along a second direction intersecting the first direction in which the partition ribs 241 extend, or in other words, each of the reinforcing ribs 242 intersects at least one of the partition ribs 241, forming an angle not of 0° or 180°. For example, the angle between the partition ribs 241 and the reinforcing ribs 242 is preferably in the range of 45° to 90°, and more preferably, as shown in the figure, the partition ribs 241 and the reinforcing ribs 242 are at 90° to each other, or in other words, they are perpendicular to each other.

[0097] In the exemplary structure shown in the figure, the heat exchange element is shown as rectangular. However, other shapes of heat exchange elements can also be used, such as square, rhombus, etc. For the rhombus-shaped heat exchange element, the partition ribs 241 can be formed in an S-shape, thereby forming an S-shaped airflow passage accordingly.

[0098] Further preferably, the frame 240 also includes a frame 243 that extends along the peripheral edge of the first heat exchange element 221, and the frame 243 intersects with both the partition rib 241 and the reinforcing rib 242.

[0099] A reinforcing rib 242 connects between at least two partition ribs 241, thereby reinforcing the partition ribs 241 and preventing them from bending or deforming. The reinforcing rib 242 is preferably intermittently arranged, thus strengthening the structural strength of the frame 240 while reducing obstruction or impact on the airflow channel formed between adjacent partition ribs 241. The width d of the reinforcing rib 242 can be 0 mm < d ≤ 5 mm. A preferred example of this width is 3 mm.

[0100] Further preferably, the height of the reinforcing rib 242 is less than the height of the partition rib 241, that is, the reinforcing rib 242 is made as thin as possible, which further helps to reduce the obstruction of the airflow channels formed between the partition ribs 241 and improve the heat exchange efficiency. At the same time, it also helps to reduce the height of the heat exchange elements, and thus helps to reduce the height of the total heat exchange core, thereby realizing the miniaturization and thinning of the total heat exchanger. In addition, under the same height conditions, as many heat exchange elements as possible can be set, which also helps to improve the heat exchange efficiency of the total heat exchanger.

[0101] Furthermore, there is a distance A between two adjacent partition ribs 241. Preferably, the distance A is in the range of 5mm ≤ A ≤ 15mm, which balances the structural strength of the frame 240 with preventing obstruction of the airflow channel.

[0102] Preferably, the partition ribs 241, reinforcing ribs 242, and frame 243 of the frame 240 are made of the same material, such as a plastic material, examples of which include at least one of polypropylene, polyethylene, and acrylonitrile-styrene-butadiene copolymer (ABS).

[0103] The heat exchanger 230 has a multi-layer structure, such as Figure 8 As shown, it includes at least a substrate layer 231 and a functional layer 232. The substrate layer 231 can be made of at least one of a metal material, a plastic material, etc., wherein the metal material can be, for example, aluminum foil, and the plastic material can be, for example, polypropylene, polyethylene, etc. Other materials can also be used to form the substrate layer 231, such as polymer materials, molecular sieves, graphene, zeolite, modified materials, and composite chemical materials.

[0104] The functional layer 232 is stacked on one side of the substrate layer 231 to form a laminated structure. The functional layer 232 may be a moisture-permeable layer adhered to the substrate layer 231, or it may be a moisture-permeable or other functional coating applied to the substrate layer 231.

[0105] The functional layer 232 preferably includes a selective moisture-absorbing material that is specifically capable of absorbing water molecules in the air, while also being configured to block harmful components such as CO2 molecules, viruses, and bacteria.

[0106] Furthermore, a moisture-permeable structure may be provided on the substrate layer 231. For example, the substrate layer 231 may include a porous structure, that is, it includes multiple moisture-permeable pores, through which water molecules adsorbed on the functional layer 232 can pass. That is, the combination of the functional layer 232 and the substrate layer 231 thus configured allows moisture to pass through, but can block harmful components such as CO2 molecules, viruses, and bacteria.

[0107] The thickness of the substrate layer 231 is greater than that of the functional layer. For example, the thickness of the substrate layer 231 is typically in the range of 10 to 20 micrometers, such as about 15 micrometers. The thickness of the functional layer 232 is in the range of 0.5 to 1 micrometer, for example, in one specific example, the functional layer 232 has a thickness of 0.7 micrometers.

[0108] In this application, the frame 240, including the partition ribs 241 and optional reinforcing ribs 242, is only attached to one side of the substrate layer 231 of the heat exchange fin 230. This prevents the functional layer 232 from being damaged during the injection molding process of the frame 240.

[0109] Preferably, the substrate layer 231 can be made of the same material as the frame 240, that is, the substrate layer is specifically formed of a plastic material such as polypropylene, polyethylene, acrylonitrile-styrene-butadiene copolymer (ABS). In this way, when the frame 240 is formed onto the substrate layer 231 by means such as hot-melt bonding, the frame 240 and the substrate layer 231 can be more easily bonded together.

[0110] Alternatively, an anti-overflow adhesive structure 244 may be formed on the frame 240 to prevent adhesive from overflowing onto the heat exchange plate 230 when the first heat exchange element 221 and the second heat exchange element 222 are bonded together. Figure 9 It shows Figure 7 A partially enlarged view of part I shows an anti-overflow adhesive structure 244 formed on the frame 240. This anti-overflow adhesive structure 244 is formed on a pair of opposing sides of the frame 243 of the frame 240. Specifically, as... Figure 10As shown, the anti-overflow adhesive structure 244 includes a protrusion 245 formed on the frame 243 (located at the top in the figure) of the frame 240 of the first heat exchange element 221 and a recess 246 formed on the frame 243 (located at the bottom in the figure) of the frame 240 of the second heat exchange element 222. When the first heat exchange element 221 and the second heat exchange element 222 are assembled together, the protrusion 245 and the recess 246 engage with each other to form an engaging connection. A first baffle 247 is formed on the side of the protrusion 245 facing the recess 246, which abuts against the recess 246 to form a seal and prevent the adhesive from flowing toward the heat exchange plate 230. A second baffle 248 is formed on the side of the recess 246 near the heat exchange plate 230, which further serves to prevent adhesive overflow.

[0111] In addition to serving as an anti-overflow adhesive when using adhesive to bond two heat exchange elements, the aforementioned first baffle 247 and then the second baffle 248 can also prevent airflow leakage from the airflow channel.

[0112] Preferably, in this application, in order to improve the structural strength of the heat exchange element, another frame is attached to the surface of the functional layer 232 on one side of the heat exchange plate 230. This frame only includes the frame and does not include the partition rib 241 and the reinforcing rib 242.

[0113] The structure of the heat exchange element has been described above using the first heat exchange element 221 as an example. The structure of the second heat exchange element 222 is also basically similar to that of the first heat exchange element 221, except that the extending directions of the partition ribs 241 are different. Specifically, the extending directions of the partition ribs 241 in the first heat exchange element 221 are approximately perpendicular to the extending directions of the partition ribs 241 in the second heat exchange element 222.

[0114] The manufacturing method of the heat exchange elements (first heat exchange element 221 and second heat exchange element 222) of this application will be described below.

[0115] First, a heat exchange plate 230 is prepared. Specifically, a substrate layer 231 is provided, and then a functional layer 232 is attached to the substrate layer 231, or a functional coating is applied to the substrate layer 231 to form the functional layer 232. In this way, a heat exchange plate 230 with a laminated structure comprising at least a substrate layer 231 and a functional layer 232 is formed.

[0116] The prepared heat exchange plate 230 is placed into an injection mold. Then, injection molding is performed into the mold to form a frame 240 bonded to the heat exchange plate 230. The injection gate is aligned with the side of the substrate layer 231 of the heat exchange plate 230, so that the frame 240 is bonded to the side of the substrate layer 231.

[0117] In order to correctly place the heat exchanger 230 into the molding die and ensure that the frame 240 adheres to the side of the substrate layer 231, the operator needs to correctly identify the substrate layer 231 and the functional layer 232 when loading the heat exchanger 230 onto the die. One method for identifying the substrate layer 231 and the functional layer 232 is to use an FTIR infrared spectrometer. Alternatively, when the functional layer 232 is sticky, the operator can also distinguish the substrate layer 231 and the functional layer 232 by touch.

[0118] Additionally, an indicator portion can preferably be formed on the heat exchanger 230. This indicator portion can be disposed on one of the substrate layer 231 and the functional layer 232 to help identify the substrate layer 231 or the functional layer 232 of the heat exchanger 230. The indicator portion can take various forms, as long as it is easily identifiable by the operator; for example, it can be at least one of the following: a notch, a raised dot, printed text, or a marking symbol. For example, the notch is a notch formed in the thickness direction of the heat exchanger, and a corresponding marking portion is formed on the edge 243 of the frame 240. This marking portion corresponds to and fits onto the indicator portion on the heat exchanger, thereby preventing the frame 240 from being mistakenly attached to the functional layer 232 of the heat exchanger 230. Alternatively, a corresponding marking portion can be provided on the injection molding mold, and when the heat exchanger is loaded onto the mold, the notch on the heat exchanger is aligned with the marking portion on the mold.

[0119] As an additional implementation, the injection mold may also include gates aligned with one side of the functional layer 232 of the heat exchange plate 230, and these gates are distributed only on the peripheral edge of the heat exchange plate 230, and the formed frame includes only the border.

[0120] Furthermore, in this method, the temperature of the injection molding material used to form the frame is controlled within the range of 220–290°C, and the cavity temperature of the injection mold is controlled within the range of 10–50°C. Such temperature control can effectively reduce the impact on the heat exchange fins 230 during the injection molding process.

[0121] As mentioned above, heat exchange elements can be stacked to form a total heat exchange core. The total heat exchange core is placed in the airflow path of air handling equipment such as total heat exchangers, fresh air units, and indoor units of air conditioners with ventilation functions to perform heat exchange treatment on the indoor and outdoor air flowing through it.

[0122] Heat exchange elements can also be used for humidification. Multiple heat exchange elements are stacked to form a humidification core. Air and water flow through the channels of two adjacent heat exchange elements, respectively. The humidification core is set in the humidification device. When air flows through the humidification core, the water in the water-side channel of the humidification core is carried into the air-side channel, thereby humidifying the air.

[0123] The aforementioned air handling equipment can be used individually or in combination. For example, the humidifier can be placed downstream of the air supply path of the total heat exchanger; the two devices can be installed as a single unit or separately.

Claims

1. A heat exchange element, the heat exchange element comprising: A heat exchanger, wherein the heat exchanger comprises at least a functional layer and a substrate layer; as well as A frame, the frame including at least two partition ribs, an airflow channel for air to flow through is formed between adjacent partition ribs, the frame being attached to the heat exchange plate to support the heat exchange plate; The feature is that the functional layer and the substrate layer are arranged overlappingly, thereby forming a stacked structure of the heat exchange plate, wherein the frame is formed on one side of the substrate layer of the heat exchange plate.

2. The heat exchange element as described in claim 1, characterized in that, The functional layer includes a moisture-absorbing material, allowing water molecules to be adsorbed onto it, and the functional layer is configured to block CO2 molecules, viruses, and bacteria; and The substrate layer includes a moisture-permeable structure so that water molecules adsorbed on the functional layer can pass through the substrate layer.

3. The heat exchange element as described in claim 1, characterized in that, The thickness of the substrate layer is greater than the thickness of the functional layer.

4. The heat exchange element as described in claim 3, characterized in that, The thickness of the substrate layer is 10 to 20 micrometers, and the thickness of the functional layer is 0.5 to 1 micrometer.

5. The heat exchange element as described in claim 1, characterized in that, The frame also includes reinforcing ribs that extend intersecting with the partition ribs and are attached to the surface of the substrate layer of the heat exchange plate.

6. The heat exchange element as described in claim 1, characterized in that, An indicator portion is formed on the heat exchange plate to indicate the substrate layer or the functional layer of the heat exchange plate.

7. The heat exchange element as described in claim 6, characterized in that, The indicator portion is formed on at least one of the substrate layer or the functional layer, and includes at least one of the following structures: a notched corner, a raised dot, printed text, or a marking symbol.

8. The heat exchange element as described in claim 1, characterized in that, The heat exchange plate and the frame are integrally formed.

9. The heat exchange element as described in claim 1, characterized in that, The substrate layer is formed of at least one of a metallic material, a plastic material, and a fiber material.

10. The heat exchange element as described in claim 5, characterized in that, The reinforcing ribs are configured to connect two or more dividing ribs.

11. The heat exchange element as described in claim 5, characterized in that, The distance between two adjacent dividing ribs is A, wherein the distance A is in the range of 5mm≤A≤15mm.

12. The heat exchange element as claimed in claim 1, characterized in that, The frame is made of plastic material.

13. The heat exchange element as described in claim 12, characterized in that, The substrate layer and the frame are made of the same material.

14. The heat exchange element as described in claim 5, characterized in that, The frame also includes a border, on which a retaining strip is formed.

15. A total heat exchange core, characterized in that, The total heat exchange core includes a plurality of heat exchange elements stacked as described in any one of claims 1 to 14.

16. An air handling device, characterized in that, The air handling equipment includes the total heat exchange core as described in claim 15.

17. A method for manufacturing a heat exchange element as claimed in claim 1, characterized in that, The method includes the following steps: a. Providing the heat exchange plate, wherein the functional layer and the substrate layer are stacked, and the heat exchange plate is placed in a mold; b. Injecting molding into a mold to form the frame bonded to the heat exchange plate, wherein the frame is bonded to a surface on one side of the substrate layer; During injection molding, the temperature of the injection material is controlled within the range of 220 to 290°C, and the cavity temperature of the injection mold is controlled within the range of 10 to 50°C.

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