Bidirectional flow fresh air dehumidifier

Abstract

The utility model relates to a bidirectional flow fresh air dehumidifier which comprises a machine box, a total heat exchange core, a dehumidification assembly, an air supply fan and an air exhaust fan, the machine box is provided with a fresh air inlet, an air exhaust opening, an air supply opening and an air return opening, the fresh air inlet and the air supply opening are communicated to form a fresh air channel, and the air return opening and the air exhaust opening are communicated to form an air return channel. The fresh air duct and the return air duct at least partially intersect to form an intersection area, and the total heat exchange core is arranged in the intersection area. According to the two-way flow fresh air dehumidifier, the exhaust fan and the shortened total heat exchange core are spatially arranged in an overlapped mode, that is, the orthographic projection of the exhaust fan and the orthographic projection of the total heat exchange core on the side wall of the machine box in the width direction at least partially coincide, and the length of the total heat exchange core is smaller than half of the width of the machine box. The length of the machine case is effectively reduced, the whole machine is more compact and light, the installation space is saved, the space utilization rate is improved, the product appearance is improved, and the requirements of more places with limitation on the installation space can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of air processing equipment, in particular to a two-way flow fresh air dehumidifier. Background Art

[0002] As people's requirements for indoor air quality continue to increase, fresh air systems have gradually become standard in modern buildings. Fresh air systems can continuously introduce fresh air from the outdoors into the room and exhaust dirty air from the room, effectively improving indoor air quality and protecting people's health.

[0003] At present, among the many types of fresh air systems, the two-way flow fresh air system is highly favored because it can simultaneously introduce fresh air and discharge return air, ensuring more efficient indoor air circulation. At the same time, in order to further improve energy utilization efficiency, the two-way flow fresh air system is usually equipped with a full heat exchange core, which uses the energy of exhaust air to preheat or precool the fresh air, reduce air conditioning load, and save energy.

[0004] However, existing ceiling-mounted two-way fresh air dehumidifiers have some design deficiencies. In order to accommodate the fresh air duct and the return air duct, they usually adopt an upper and lower layered structure, which results in a thicker chassis and occupies more ceiling space, which is not conducive to installation and overall aesthetics, and also limits its application in some places with high requirements for installation space.

[0005] Therefore, how to reduce the volume of the ceiling-mounted two-way flow fresh air dehumidifier, especially reduce its overall size, make it more compact and lightweight, easy to install and adapt to different application scenarios, has become a technical problem that needs to be solved urgently in this field. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a two-way flow fresh air dehumidifier which achieves effective reduction in the size of the whole machine and makes it more compact and lightweight.

[0007] To achieve the above object, the bidirectional flow fresh air dehumidifier designed by the present utility model includes a chassis, a total heat exchange core, a dehumidification component, a supply air fan and an exhaust air fan. The chassis is provided with a fresh air inlet, an exhaust air outlet, a supply air outlet and a return air inlet. The fresh air inlet is communicated with the supply air outlet to form a fresh air duct, the return air inlet is communicated with the exhaust air outlet to form a return air duct, at least part of the fresh air duct and the return air duct intersect to form an intersection area, and the total heat exchange core is arranged in the intersection area; the dehumidification component and the supply air fan are arranged in the fresh air duct; the exhaust air fan is arranged in the return air duct; the fresh air inlet, the total heat exchange core, the dehumidification component and the supply air outlet are arranged in sequence along the length direction of the chassis and are located in the same plane layer; the air outlet of the exhaust air fan is connected with the exhaust air outlet, and the projection of the exhaust air fan and the total heat exchange core on the side wall of the chassis in the width direction at least partially overlaps. Among them, the length direction of the total heat exchange core is perpendicular to the length direction of the chassis

[0008] Further, the length of the total heat exchange core is less than or equal to half of the width of the chassis.

[0009] Further, a hollow exchange shell is arranged in the intersection area, the total heat exchange core is arranged in the exchange shell, and the exchange shell is provided with a first ventilation port communicating the fresh air inlet with the total heat exchange core, a second ventilation port communicating the supply air outlet with the total heat exchange core, a third ventilation port communicating the return air inlet with the total heat exchange core and a fourth ventilation port communicating the exhaust air outlet with the total heat exchange core; among them, the exhaust air fan is located between the exhaust air outlet and the fourth ventilation port, and the supply air fan is located between the supply air outlet and the second ventilation port.

[0010] Further, the total heat exchange core divides the internal space of the exchange shell into mutually independent first chamber, second chamber, third chamber and fourth chamber. Among them, the first chamber and the second chamber are communicated through the total heat exchange core, and the third chamber and the fourth chamber are communicated through the total heat exchange core; the first chamber is communicated with the first ventilation port, the second chamber is communicated with the second ventilation port, the third chamber is communicated with the third ventilation port, and the fourth chamber is communicated with the fourth ventilation port.

[0011] Further, the exchange shell is a cuboid, and the cuboid has a first side wall facing the fresh air inlet, a second side wall facing the supply air outlet, and a third side wall facing the exhaust air fan. Among them, the first ventilation port is arranged on the first side wall, the second ventilation port is arranged on the second side wall, and the third ventilation port and the fourth ventilation port are both arranged on the third side wall.

[0012] Furthermore, the radial cross-section of the total heat exchange core is hexagonal, and the total heat exchange core has a top surface and a bottom surface that are parallel and opposite to each other, as well as a first surface that is connected to the top surface and is angled, a second surface that is connected to the bottom surface and is angled, a third surface that is connected to the top surface and is angled, and a fourth surface that is connected to the bottom surface and is angled. The first surface and the fourth surface are connected and angled, and the second surface and the third surface are connected and angled. Among them, the first surface, a part of the first side wall, a part of the third side wall, and a part of the inner wall surface of the exchange housing enclose the first chamber; the second surface, a part of the second side wall, a part of the third side wall, and a part of the inner wall surface of the exchange housing enclose the second chamber; the third surface, a part of the second side wall, a part of the third side wall, and a part of the inner wall surface of the exchange housing enclose the third chamber; the fourth surface, a part of the first side wall, a part of the third side wall, and a part of the inner wall surface of the exchange housing enclose the third chamber.

[0013] Furthermore, the exchange housing further includes a fourth side wall that is parallel to the third side wall, and a replacement opening for replacing the total heat exchange core is provided on the fourth side wall. The total heat exchange core is configured to be able to be withdrawn from the replacement opening of the fourth side wall of the exchange housing.

[0014] Furthermore, a maintenance door panel that covers the fourth side wall and the replacement opening is provided on one side of the chassis, and the maintenance door panel is rotatably connected to the chassis through a detachable pivoting mechanism.

[0015] Furthermore, guide chutes are respectively provided on the first side wall and the second side wall, and the connections between the first surface and the fourth surface and between the second surface and the third surface of the total heat exchange core are respectively slidably engaged with the corresponding guide chutes.

[0016] Furthermore, a first filter screen is installed on the first surface, and a second filter screen is installed on the third surface.

[0017] Furthermore, a fifth chamber is formed at an interval between the first side wall of the exchange housing and the inner wall surface of the chassis. An inclined plate is provided in the fifth chamber, and the inclined plate divides the fifth chamber into an independent sixth chamber. The fifth chamber is communicated with the first chamber through a first ventilation port, the sixth chamber is communicated with the fourth chamber through a fifth ventilation port provided on the first side wall, and a sixth ventilation port for communicating the exhaust port and the sixth chamber is provided on the third side wall.

[0018] The two-way fresh air dehumidifier designed by the present utility model realizes effective reduction of the length of the machine case by overlapping the exhaust fan and the shortened total heat exchanger core in space, that is, the positive projections of the exhaust fan and the total heat exchanger core on the side wall in the width direction of the machine case at least partially coincide, and the length of the total heat exchanger core is less than half of the width of the machine case. This makes the whole machine more compact and lightweight, saves the installation space, improves the space utilization rate, improves the product appearance, and can meet the needs of more places with limited installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the two-way fresh air dehumidifier provided by an embodiment of the present application.

[0020] Figure 2 is Figure 1 a three-dimensional exploded view of.

[0021] Figure 3 is a three-dimensional structural schematic diagram of the exchange shell provided by an embodiment of the present application.

[0022] Figure 4 is a schematic diagram of the air duct provided by an embodiment of the present application.

[0023] Figure 5 is Figure 4 a right view of.

[0024] Figure 6 is Figure 4 a three-dimensional sectional view at A-A in.

[0025] Figure 7 is Figure 4 a three-dimensional sectional view at B-B in.

[0026] Figure 8 is an assembly schematic diagram of the total heat exchanger core provided by an embodiment of the present application.

[0027] Figure 9 is a structural schematic diagram of the third side wall provided by an embodiment of the present application.

[0028] Figure 10 is a replacement schematic diagram of the total heat exchanger core provided by an embodiment of the present application.

[0029] Wherein: the chassis 10, fresh air inlet 11, air outlet 12, air supply outlet 13, air return outlet 14, fresh air duct 15, air return duct 16, maintenance door panel 17, pivot joint mechanism 18, circulation duct 19, second air valve 191, total heat exchange core 20, top surface 21, bottom surface 22, first surface 23, first filter screen 231, second filter screen 251, second surface 24, third surface 25, fourth surface 26, dehumidification component 30, air supply fan 40, exhaust fan 50, intersection area 60, exchange housing 61, first ventilation port 61a, second ventilation port 61b, third ventilation port 61c, fourth ventilation port 61d, first side wall 611, second side wall 612, third side wall 613, fourth side wall 614, replacement port 615, guide chute 616, first cavity 62, second cavity 63, third cavity 64, fourth cavity 65, fifth cavity 70, inclined plate 71, sixth cavity 80, fifth ventilation port 81, sixth ventilation port 82. Detailed implementation manners

[0030] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0031] In the two-way fresh air dehumidifier provided in a comparative example, its fresh air channel and air return channel adopt an up-and-down layered structure, and the overall thickness of the chassis is relatively large; the total heat exchange core runs through the entire body, resulting in relatively large length and width dimensions of the chassis, further increasing the overall volume of the chassis.

[0032] The two-way fresh air dehumidifier provided in this embodiment is designed for ceiling installation and is applicable to various indoor environments that require fresh air exchange and dehumidification, such as residential houses, offices, schools and other places. The core of this device lies in its innovative internal structure design and component layout, realizing efficient fresh air exchange and dehumidification functions, and at the same time greatly reducing the volume of the device.

[0033] Such as Figures 1 to 10As shown in the figure, the two-way flow fresh air dehumidifier described in this embodiment includes a chassis 10, a total heat exchange core 20, a dehumidification component 30, a supply air fan 40, and an exhaust air fan 50. The chassis 10 is provided with a fresh air inlet 11, an exhaust air outlet 12, a supply air outlet 13, and a return air inlet 14. The fresh air inlet 11 is communicated with the supply air outlet 13 to form a fresh air duct 15. The return air inlet 14 is communicated with the exhaust air outlet 12 to form a return air duct 16. At least part of the fresh air duct 15 and the return air duct 16 intersect to form an intersection area 60. The total heat exchange core 20 is arranged in the intersection area 60. The dehumidification component 30 and the supply air fan 40 are arranged in the fresh air duct 15. The exhaust air fan 50 is arranged in the return air duct 16. The fresh air inlet 11, the total heat exchange core 20, the dehumidification component 30, and the supply air outlet 13 are arranged in sequence along the length direction of the chassis 10 and are located in the same plane layer. The air outlet of the exhaust air fan 50 is connected to the exhaust air outlet 12, and at least part of the orthographic projection of the exhaust air fan 50 and the total heat exchange core 20 on the side wall of the chassis 10 in the width direction of the chassis 10 coincides. That is to say, the length of the total heat exchange core 20 is less than the width of the chassis 10, and there is a gap between the total heat exchange core 20 and the side wall on one side of the chassis 10 in the width direction of the chassis 10. The arrangement that at least part of the orthographic projection of the total heat exchange core 20 and the exhaust air fan 50 on the side wall of the chassis 10 in the width direction of the chassis 10 coincides enables the length of the chassis 10 to be effectively reduced.

[0034] In this embodiment, the length direction of the total heat exchange core 20 is set to be perpendicular to the length direction of the chassis 10, and the length of the total heat exchange core 20 is set to be less than or equal to half of the width of the chassis 10. There is a gap between the total heat exchange core 20 and the rear side wall of the chassis 10.

[0035] During specific implementation, refer to Figures 1 to 10 As shown in the figure, this two-way flow fresh air dehumidifier is mainly installed on the ceiling. Its working process can flexibly switch different operation modes according to actual needs. Four main openings are provided on the chassis 10: a fresh air inlet 11, an exhaust air outlet 12, a supply air outlet 13, and a return air inlet 14. Each air outlet is configured with a controllable air valve to accurately adjust the air flow according to different operation modes, so as to achieve precise control of fresh air introduction, return air discharge, energy recovery, and humidity control.

[0036] As Figure 4 shown in the figure, these air outlets form two main air ducts: a fresh air duct 15 and a return air duct 16. Among them, the fresh air duct 15 connects the fresh air inlet 11 and the supply air outlet 13 and is responsible for guiding outdoor fresh air into the room. The return air duct 16 connects the return air inlet 14 and the exhaust air outlet 12 and is responsible for discharging indoor air. At the same time, these two air ducts form an intersection area 60 inside the chassis. The total heat exchange core 20 is arranged in this intersection area 60 to achieve efficient energy exchange between fresh air and exhaust air.

[0037] Specifically, taking the fresh air introduction and dehumidification mode as an example: when fresh air needs to be introduced and the indoor humidity needs to be controlled, the controllable air valves of the return air outlet 14 and the exhaust air outlet 12 are closed, and the supply air fan 40 is started. At this time, outdoor fresh air enters the fresh air duct 15 through the fresh air inlet 11, first passes through the total heat exchange core 20 for energy recovery, absorbs the heat or cold in the exhaust air, then reduces the humidity through the dehumidification component 30, and finally is sent into the room through the supply air outlet 13. In this mode, the two-way fresh air dehumidifier can not only introduce fresh air, but also effectively control the indoor humidity, and reduce the load of the air conditioner through the energy recovery function, saving energy. Taking the exhaust mode as an example: when the indoor dirty air needs to be exhausted, the air valves of the fresh air inlet 11 and the supply air outlet 13 are closed, and the exhaust air fan 50 is started. At this time, the indoor dirty air is inhaled into the return air duct 16 through the return air outlet 14 and discharged outdoors through the exhaust air outlet 12 after passing through the total heat exchange core 20. In this process, the energy in the dirty air is absorbed by the total heat exchange core 20 and used to preheat or precool the incoming fresh air, significantly improving the energy utilization efficiency and reducing the energy consumption of the whole machine. In this embodiment, regarding the working principle of the dehumidification component 30, the condensation dehumidification technology in the prior art can be adopted, and this embodiment will not elaborate on it.

[0038] Different from the fresh air dehumidifier in the related art, the total heat exchange core 20 located in the intersection area 60 has at least partial overlap with the positive projection of the exhaust air fan 50 on the side wall in the width direction of the chassis 10, and the length direction of the total heat exchange core 20 is perpendicular to the length direction of the chassis 10. At the same time, the length of the total heat exchange core 20 is less than half of the width of the chassis 10. This structural design brings the following benefits:

[0039] First, the length of the total heat exchange core 20 is shortened to less than half of the width of the chassis 10, and its length direction is perpendicular to the length direction of the chassis 10. Combining the design that the exhaust air fan 50 and the total heat exchange core 20 at least partially overlap in the width direction of the chassis 10 is equivalent to embedding the exhaust air fan 50 into the space originally occupied by the total heat exchange core 20, effectively shortening the length and width of the chassis, thereby reducing the volume of the whole machine.

[0040] Second, the total heat exchange core 20 with a shortened length is arranged in the intersection area 60, which can also make the airflows in the fresh air duct 15 and the return air duct 16 flow through the total heat exchange core 20 more concentratedly, that is, this layout increases the contact between the fresh air and the return air and the total heat exchange core 20 more concentratedly, effectively improving the energy exchange efficiency, reducing the energy dissipation, thus better playing the role of the total heat exchange core 20 and further enhancing the energy-saving effect of the two-way fresh air dehumidifier.

[0041] Furthermore, the fresh air duct 15 and the return air duct 16 are arranged on the same plane layer and intersect to form an intersection area 60. This enables the fresh air inlet 11, the total heat exchange core 20, the dehumidification component 30, and the air supply outlet 13 to be arranged in sequence along the length direction of the chassis 10, thus achieving efficient energy exchange between the fresh air and the exhaust air. It avoids the increase in thickness caused by the upper and lower layered structure used in the related art to accommodate two air ducts, realizes the "flattened" design of the chassis 10, and makes the chassis thinner and lighter.

[0042] In summary, this structure can reduce the overall size of the chassis 10. A smaller volume means occupying less ceiling space, which can leave more space for other equipment or decoration, improving the space utilization rate. Moreover, a smaller volume is also more easily adapted to different ceiling environments, such as rooms with lower floor heights, narrow corridors, etc.

[0043] In some embodiments, as Figure 4 shown, the fresh air inlet 11, the exhaust air outlet 12, the air supply outlet 13, and the return air outlet 14 are respectively provided with a first air valve (not shown in the figure); the return air outlet 14 and the air supply outlet 13 are connected through a circulation air duct 19. A partition (not shown in the figure) for separating the fresh air duct 15 and the return air duct 16 is provided inside the chassis 10. A second air valve 191 is provided on the partition. By controlling the opening and closing state of the second air valve 191, the air flow channel between the fresh air duct 15 and the return air duct 16 can be selectively conducted or cut off, thereby forming or closing the circulation air duct 19.

[0044] During operation, by way of example: the dehumidification component 30 is located in the circulation air duct 19. When it is necessary to circulate and dehumidify the indoor air, the air valves of the fresh air inlet 11 and the exhaust air outlet 12 are closed, the second air valve 191 is opened, and the air supply fan 40 is started. At this time, the indoor air enters the return air duct 16 through the return air outlet 14. Since the second air valve 191 is opened, the air flow enters the circulation air duct 19. In the circulation air duct 19 (fresh air duct 15), the air flow will pass through the dehumidification component 30 for dehumidification treatment to reduce the air humidity. The dehumidified air is then sent back into the room from the air supply outlet 13 under the drive of the air supply fan 40. Through this circulation dehumidification mode, the indoor air humidity can be effectively reduced, preventing the growth of bacteria and molds in a humid environment and creating a more comfortable and healthy indoor environment for users.

[0045] In some embodiments, as Figure 2 、 Figure 3 、 Figures 5 to 10As shown, a hollow exchange housing 61 is provided in the intersection area 60. The total heat exchange core 20 is disposed within the exchange housing 61. The exchange housing 61 is provided with a first ventilation port 61a communicating the fresh air inlet 11 with the total heat exchange core 20, a second ventilation port 61b communicating the air supply port 13 with the total heat exchange core 20, a third ventilation port 61c communicating the return air port 14 with the total heat exchange core 20, and a fourth ventilation port 61d communicating the exhaust air port 12 with the total heat exchange core 20. Among them, the exhaust air fan 50 is located between the exhaust air port 12 and the fourth ventilation port 61d, and the air supply fan 40 is located between the air supply port 13 and the second ventilation port 61b.

[0046] With this structural design, the exchange housing 61 wraps the total heat exchange core 20, forming a relatively enclosed space. Through the first ventilation port 61a, the second ventilation port 61b, the third ventilation port 61c, and the fourth ventilation port 61d, an air flow channel can be established between the fresh air channel 15 and the air supply channel 16 and the exchange housing 61 to guide the air flow to enter the total heat exchange core 20 for energy exchange. This can effectively prevent the fresh air and the return air from mixing with the air in other areas inside the chassis 10 during the process of flowing through the total heat exchange core 20, reduce the loss of energy, and thus improve the energy exchange efficiency.

[0047] Specifically, as Figure 2 , Figure 3 , Figures 5 to 10 shown, the exchange housing 61 is a cuboid, which has a first side wall 611 facing the fresh air inlet 11, a second side wall 612 facing the air supply port 13, and a third side wall 613 facing the exhaust air fan 50. Among them, the first ventilation port 61a is provided on the first side wall 611, the second ventilation port 61b is provided on the second side wall 612, and the third ventilation port 61c and the fourth ventilation port 61d are both provided on the third side wall 613.

[0048] In this way, by setting the first ventilation port 61a on the first side wall 611 facing the fresh air inlet 11 and the second ventilation port 61b on the second side wall 612 facing the air supply port 13, the fresh air and the processed fresh air can enter and leave from both sides of the exchange housing 61 respectively, forming a relatively smooth air flow path, avoiding the air flow from being disordered inside the exchange housing 61, and thus improving the energy exchange efficiency. By setting both the third ventilation port 61c and the fourth ventilation port 61d on the third side wall 613 facing the exhaust air fan 50, the exhaust air fan 50 can be closer to the total heat exchange core 20, facilitating the partial overlap of the exhaust air fan 50 and the total heat exchange core 20 in the width direction of the chassis 10, thereby shortening the length and width of the chassis 10 and reducing the volume of the whole machine. In addition, using a cuboid-shaped exchange housing 61 has a simple structure and is easy to manufacture, which can reduce the manufacturing cost.

[0049] In some embodiments, such as Figure 5 shown, the total heat exchange core 20 divides the internal space of the exchange housing 61 into mutually independent first chamber 62, second chamber 63, third chamber 64 and fourth chamber 65. Among them, the first chamber 62 and the second chamber 63 are communicated through the total heat exchange core 20, and the third chamber 64 and the fourth chamber 65 are communicated through the total heat exchange core 20; the first chamber 62 is communicated with the first ventilation port 61a, the second chamber 63 is communicated with the second ventilation port 61b, the third chamber 64 is communicated with the third ventilation port 61c, and the fourth chamber 65 is communicated with the fourth ventilation port 61d.

[0050] With this structural design, by dividing the internal space of the exchange housing 61 into four chambers through the total heat exchange core 20, fresh air and return air can be kept isolated from each other during the process of flowing through the total heat exchange core 20 for energy exchange, preventing cross-contamination; for example, the first chamber 62 and the second chamber 63 are respectively used as part of the fresh air passage 15, and the third chamber 64 and the fourth chamber 65 are respectively used as part of the return air passage 16, so as to ensure that fresh air will not be mixed with return air and ensure the cleanliness of fresh air; at the same time, this structural design also enables fresh air and return air to contact the surface of the total heat exchange core 20 more fully. For example, when fresh air flows through the first chamber 62 and the second chamber 63, it can contact a larger surface area of the total heat exchange core 20, thereby improving the efficiency of energy exchange.

[0051] Specifically, as Figure 2 , Figure 3 , Figures 5 to 10 shown, the radial cross-section of the total heat exchange core 20 is hexagonal, and the total heat exchange core 20 has a top surface 21 and a bottom surface 22 that are parallel and opposite to each other, as well as a first surface 23 that is connected to the top surface 21 and is arranged at an angle, a second surface 24 that is connected to the bottom surface 22 and is arranged at an angle, a third surface 25 that is connected to the top surface 21 and is arranged at an angle, and a fourth surface 26 that is connected to the bottom surface 22 and is arranged at an angle. The first surface 23 and the fourth surface 26 are connected and arranged at an angle, and the second surface 24 and the third surface 25 are connected and arranged at an angle; among them, the first surface 23, a part of the first side wall 611, a part of the third side wall 613, and a part of the inner wall surface of the exchange housing 61 enclose the first chamber 62; the second surface 24, a part of the second side wall 612, a part of the third side wall 613, and a part of the inner wall surface of the exchange housing 61 enclose the second chamber 63; the third surface 25, a part of the second side wall 612, a part of the third side wall 613, and a part of the inner wall surface of the exchange housing 61 enclose the third chamber 64; the fourth surface 26, a part of the first side wall 611, a part of the third side wall 613, and a part of the inner wall surface of the exchange housing 61 enclose the third chamber 64.

[0052] In this way, the total heat exchange core 20 is in the shape of a hexagonal prism as a whole, and its four inclined surfaces (the first surface 23, the second surface 24, the third surface 25, and the fourth surface 26) form an interleaved structure, effectively increasing the contact area between the total heat exchange core 20 and the fresh air and the return air, thereby improving the energy exchange efficiency. At the same time, the first surface 23 and the second surface 24 are arranged diagonally, and the third surface 25 and the fourth surface 26 are arranged diagonally. On the one hand, it can guide the fresh air and the return air to flow along the inclined surfaces, extending the residence time of the air flow in the total heat exchange core 20, thereby increasing the energy exchange time and further improving the energy exchange efficiency. On the other hand, the four inclined surfaces of the total heat exchange core 20 can conveniently divide the internal space of the exchange housing 61 into four independent cavities (the first cavity 62, the second cavity 63, the third cavity 64, and the fourth cavity 65), which is beneficial to realizing the isolation of the fresh air and the return air and preventing cross-contamination.

[0053] In some embodiments, such as Figure 2 , Figure 3 and Figure 10 shown, the exchange housing 61 further includes a fourth side wall 614 arranged parallel to the third side wall 613. A replacement opening 615 for replacing the total heat exchange core 20 is provided on the fourth side wall 614, and the total heat exchange core 20 is configured to be able to be withdrawn from the replacement opening 615 of the fourth side wall 614 of the exchange housing 61. The total heat exchange core 20 may experience problems such as aging and blockage after long-term use and needs to be replaced. The provision of the replacement opening 615 can conveniently withdraw the total heat exchange core 20 from the exchange housing 61 for replacement without disassembling the entire chassis 10, greatly simplifying the replacement operation and saving maintenance time and costs.

[0054] Specifically, as Figure 2 and Figure 10 shown, one side of the chassis 10 is provided with a maintenance door panel 17 covering the fourth side wall 614 and the replacement opening 615. The maintenance door panel 17 is rotatably connected to the chassis 10 through a detachable pivoting mechanism 18. In this embodiment, the maintenance door panel 17 can be fixed to the chassis 10 in various ways, such as magnetic attraction, snap connection, or hand-tightened screws, etc., which is convenient for users to disassemble or install according to needs. The maintenance door panel 17 covers the fourth side wall 614 and the replacement opening 615, effectively preventing dust and foreign objects from entering the interior of the chassis, and at the same time ensuring the neat and beautiful appearance of the chassis.

[0055] For users: when it is necessary to replace or clean the total heat exchange core 20, the user only needs to open or disassemble the maintenance door panel 17, and then can conveniently operate through the replacement opening 615, without the need for professional maintenance personnel to come to the door for service, improving the convenience of product maintenance and reducing the maintenance cost.

[0056] For professionals: When more professional maintenance and repair operations are required, such as inspecting the interior of the exchange housing 61, repairing other components, etc., professionals can also conveniently perform operations by opening the maintenance door panel 17. And when necessary, in order to obtain a larger operating space, the entire maintenance door panel 17 can also be removed through the detachable pivoting mechanism 18, and then operations can be carried out to avoid blocking the line of sight or affecting operations when the maintenance door panel 17 is opened.

[0057] In some embodiments, as Figure 8 and Figure 10 shown, guide chutes 616 are respectively provided on the first side wall 611 and the second side wall 612. The connections between the first surface 23 and the fourth surface 26 of the total heat exchange core 20 and the connections between the second surface 24 and the third surface 25 are respectively slidably mated with the corresponding guide chutes 616. With this structural design, the total heat exchange core 20 can be made to slide along the guide chutes 616, facilitating the extraction or insertion of the total heat exchange core 20 from the exchange housing 61. For example, when the total heat exchange core 20 needs to be replaced or cleaned, it can be smoothly extracted along the guide chutes 616 to avoid jamming or damage. At the same time, the guide chutes 616 can limit the movement direction of the total heat exchange core 20, ensuring its accurate position within the exchange housing 61. For example, ensuring the correct connection positions of the total heat exchange core 20 with each ventilation port (61a, 61b, 61c, 61d) to avoid problems such as air leakage or reduced energy exchange efficiency.

[0058] In some embodiments, as Figure 6 、 Figure 8 and Figure 10 shown, a first filter screen 231 is installed on the first surface 23, and a first filter screen 231 is installed on the third surface 25. The first filter screen 231 and the first filter screen 231 can filter the fresh air entering the exchange housing 61; by installing the second filter screen 251 on the third surface 25 of the total heat exchange core 20, the air entering the exchange housing 61 can be filtered. This separate filtering design can select different filter materials and filtration precisions according to the different pollutant characteristics of fresh air and return air. For example, the first filter screen 231 can adopt a primary or medium - efficiency filter, mainly filtering large particles and dust in outdoor air; while the second filter screen 251 can adopt a medium - efficiency or high - efficiency filter, mainly filtering pollutants such as PM2.5, bacteria, and viruses in indoor air, thereby improving the filtration efficiency and enhancing the indoor air quality.

[0059] In some embodiments, as Figure 3 、 Figure 5 、 Figures 8 to 10As shown in the figure, a fifth chamber 70 is formed at an interval between the first side wall 611 of the exchange housing 61 and the inner wall surface of the chassis 10. An inclined plate 71 is provided in the fifth chamber 70. The inclined plate 71 divides the fifth chamber 70 to form an independent sixth chamber 80. The fifth chamber 70 is communicated with the first chamber 62 through a first ventilation port 61a. The sixth chamber 80 is communicated with the fourth chamber 65 through a fifth ventilation port 81 provided on the first side wall 611. A sixth ventilation port 82 communicating the exhaust port 12 and the sixth chamber 80 is provided on the third side wall 613.

[0060] With this structural design, the fresh air entering from the fresh air inlet 11 first enters the fifth chamber 70. The inclined plate 71 divides the fifth chamber 70 into two regions. One region is communicated with the first chamber 62, allowing part of the fresh air to enter the total heat exchange core 20 for energy exchange; the other region, that is, the sixth chamber 80, is communicated with the fourth chamber 65, and the sixth chamber 80 is communicated with the fourth chamber 65 through the fifth ventilation port 81, so that part of the exhaust air after heat exchange through the total heat exchange core 20 can enter the sixth chamber 80.

[0061] Specifically, for the exhaust air entering the sixth chamber 80, on the one hand, it can exchange heat with the fresh air entering the fifth chamber 70 through the inclined plate 71, thereby using the waste heat in the exhaust air to preheat the fresh air, increasing the temperature of the fresh air entering the total heat exchange core 20 for heat exchange, improving the energy utilization rate, especially effectively increasing the temperature of the air sent into the room in winter and enhancing the comfort. On the other hand, the sixth chamber 80 is communicated with the exhaust port 12 through the sixth ventilation port 82, which is equivalent to adding an exhaust outlet to the exhaust air duct 16. Together with the connection setting of the fourth chamber 65 and the fourth ventilation port 61d, the exhaust efficiency of the exhaust air duct 16 can be effectively improved.

[0062] In the two-way flow fresh air dehumidifier provided in this embodiment, by overlapping the exhaust fan and the shortened total heat exchange core in space, that is, at least part of the orthographic projections of the exhaust fan and the total heat exchange core on the side wall in the width direction of the chassis coincide, and the length of the total heat exchange core is less than half of the width of the chassis, the effective reduction of the length of the chassis is realized, making the whole machine more compact and lightweight, saving the installation space, improving the space utilization rate, improving the product appearance, and meeting the needs of more places with limited installation space.

[0063] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0064] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0065] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A two-way flow fresh air dehumidifier, comprising a chassis, a total heat exchange core, a dehumidification component, a supply air fan and an exhaust air fan. The chassis is provided with a fresh air inlet, an exhaust air outlet, a supply air outlet and a return air inlet. The fresh air inlet is communicated with the supply air outlet to form a fresh air duct, and the return air inlet is communicated with the exhaust air outlet to form a return air duct. It is characterized in that, The fresh air duct and the return air duct at least partially intersect to form an intersection area, and the total heat exchange core is arranged in the intersection area; the dehumidification component and the air supply fan are arranged in the fresh air duct; the exhaust fan is arranged in the return air duct; the fresh air inlet, the total heat exchange core, the dehumidification component and the air supply outlet are arranged in sequence along the length direction of the chassis and are located in the same plane layer; the air outlet of the exhaust fan is connected to the exhaust port, and the projection of the exhaust fan and the total heat exchange core on the side wall in the width direction of the chassis at least partially overlaps, wherein the length direction of the total heat exchange core is perpendicular to the length direction of the chassis.

2. The two-way flow fresh air dehumidifier according to claim 1, characterized in that, The length of the total heat exchange core is less than or equal to half of the width of the chassis.

3. The two-way flow fresh air dehumidifier according to claim 1, characterized in that, A hollow exchange shell is arranged in the intersection area, the total heat exchange core is arranged in the exchange shell, and the exchange shell is provided with a first ventilation port connecting the fresh air inlet and the total heat exchange core, a second ventilation port connecting the air supply outlet and the total heat exchange core, a third ventilation port connecting the return air inlet and the total heat exchange core, and a fourth ventilation port connecting the exhaust port and the total heat exchange core; wherein, the exhaust fan is located between the exhaust port and the fourth ventilation port, and the air supply fan is located between the air supply outlet and the second ventilation port.

4. The two-way flow fresh air dehumidifier according to claim 3, wherein The total heat exchange core divides the internal space of the exchange shell into mutually independent first chamber, second chamber, third chamber and fourth chamber. Among them, the first chamber and the second chamber are connected through the total heat exchange core, and the third chamber and the fourth chamber are connected through the total heat exchange core; the first chamber is connected to the first ventilation port, the second chamber is connected to the second ventilation port, the third chamber is connected to the third ventilation port, and the fourth chamber is connected to the fourth ventilation port.

5. The two-way flow fresh air dehumidifier according to claim 4, wherein, The exchange shell is a cuboid, and the cuboid has a first side wall facing the fresh air inlet, a second side wall facing the air supply outlet, and a third side wall facing the exhaust fan. Among them, the first ventilation port is arranged on the first side wall, the second ventilation port is arranged on the second side wall, and the third ventilation port and the fourth ventilation port are both arranged on the third side wall.

6. The two-way flow fresh air dehumidifier according to claim 5, characterized in that, The radial cross-section of the total heat exchange core is hexagonal, and the total heat exchange core has a top surface and a bottom surface that are parallel and opposite to each other, as well as a first surface that is connected to the top surface and is angled, a second surface that is connected to the bottom surface and is angled, a third surface that is connected to the top surface and is angled, and a fourth surface that is connected to the bottom surface and is angled. The first surface and the fourth surface are connected and angled; the second surface and the third surface are connected and angled; wherein, the first surface, a part of the first side wall, a part of the third side wall and a part of the inner wall surface of the exchange shell enclose the first chamber; the second surface, a part of the second side wall, a part of the third side wall and a part of the inner wall surface of the exchange shell enclose the second chamber; the third surface, a part of the second side wall, a part of the third side wall and a part of the inner wall surface of the exchange shell enclose the third chamber; the fourth surface, a part of the first side wall, a part of the third side wall and a part of the inner wall surface of the exchange shell enclose the third chamber.

7. The two-way flow fresh air dehumidifier according to claim 6, characterized in that, The exchange housing further includes a fourth side wall disposed parallel to the third side wall, and a replacement opening for replacing the total heat exchange core is provided on the fourth side wall. The total heat exchange core is configured to be able to be withdrawn from the replacement opening of the fourth side wall of the exchange housing.

8. The two-way flow fresh air dehumidifier according to claim 6 or 7, characterized in that, Guide chutes are respectively provided on the first side wall and the second side wall, and the joints of the first and fourth surfaces and the joints of the second and third surfaces of the total heat exchange core are respectively slidably engaged with the corresponding guide chutes.

9. The two-way flow fresh air dehumidifier according to claim 6, wherein, A fifth cavity is formed at an interval between the first side wall of the exchange housing and the inner wall surface of the chassis. An inclined plate is provided in the fifth cavity, and the inclined plate divides the fifth cavity into an independent sixth cavity. The fifth cavity is communicated with the first cavity through a first air vent, the sixth cavity is communicated with the fourth cavity through a fifth air vent provided on the first side wall, and a sixth air vent communicating the exhaust port and the sixth cavity is provided on the third side wall.

10. The two-way flow fresh air dehumidifier according to any one of claims 1-9, characterized in that, First air valves are respectively provided at the fresh air inlet, the exhaust port, the air supply port and the return air port; the return air port and the air supply port are communicated through a circulation air duct, a partition for separating the fresh air duct and the return air duct is provided inside the chassis, and a second air valve is provided on the partition. By controlling the opening and closing state of the second air valve, the air flow channel between the fresh air duct and the return air duct can be selectively conducted or cut off, so as to form or close the circulation air duct.

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