Fresh air all-in-one machine

Abstract

The fresh air all-in-one machine comprises a machine frame, a fresh air module and an outdoor unit module, the fresh air module and the outdoor unit module are arranged on the machine frame, the machine frame comprises a partition plate and a panel, the partition plate and the panel form a first containing cavity and a second containing cavity, and the first containing cavity and the second containing cavity are arranged in the vertical direction; the fresh air module and the outdoor unit module are arranged in the first containing cavity and the second containing cavity correspondingly, so that the fresh air module and the outdoor unit module are physically isolated. The fresh air module does not make direct contact with the outdoor unit module during refrigeration and dehumidification, the fresh air module and the outdoor unit module operate independently, and mutual influence of the temperature between cold and heat sources is effectively avoided. The fresh air module and the outdoor unit module are physically isolated in different containing cavities, and vibration and noise transmission can be effectively isolated. Physical isolation is achieved through the partition plate, and on one hand, airflow crosstalk between the fresh air module and the outdoor unit module is avoided.

Description

Technical Field

[0001] This invention relates to the field of fresh air equipment technology, and in particular to an integrated fresh air unit. Background Technology

[0002] With socio-economic development, people's standards for indoor air quality and thermal comfort are constantly rising, driving continuous progress in HVAC technology. Under this trend, simply using air conditioners and fresh air systems separately is no longer sufficient to meet these high standards. Therefore, integrated air conditioning and fresh air system technology, which combines the cooling / heating functions of an air conditioner with the ventilation function of a fresh air system, has emerged. The goal of this integrated device is to provide comfortable temperatures while ensuring clean and fresh indoor air, making it an important development direction in the HVAC field.

[0003] In the exploration of achieving integration, in order to save valuable building space, the industry has seen designs that integrate and stack the fresh air handling module with the compressor / condenser module. For example, Chinese patent CN102425822A discloses a fresh air air conditioner in which the upper part serves as the fresh air duct, while the lower part (52) houses the compressor and the first coil heat exchanger, among other core components. This design achieves compact stacking in the vertical direction.

[0004] However, while this type of stacked structure, exemplified by CN102425822A, achieves a compact layout, it also introduces or fails to solve a series of key technical challenges. It actively guides condensate generated in the upper section to the heat exchanger in the lower section, while the lower chamber also houses core electrical components such as the compressor. This design lacks effective physical isolation between the water and electrical circuits, and any condensate leakage, splashing, or abnormality poses a serious threat to the safety of the electrical components below. Summary of the Invention

[0005] Therefore, it is necessary to provide a new integrated air purifier to address the above issues.

[0006] This application provides an integrated fresh air unit, including a frame, and a fresh air module and an outdoor unit module mounted on the frame. The frame includes a partition and a panel, the partition and the panel forming a first receiving cavity and a second receiving cavity, the first receiving cavity and the second receiving cavity being arranged in a vertical direction, the fresh air module and the outdoor unit module being respectively arranged in the first receiving cavity and the second receiving cavity, so that the fresh air module and the outdoor unit module are physically isolated.

[0007] Optionally, the fresh air module and the outdoor unit module are arranged vertically, and the vertical projection of the fresh air module falls within the vertical projection of the outdoor unit module. The fresh air module includes a fan, a filter, and an evaporator, which are arranged sequentially along the air intake direction of the fan. The outdoor unit module includes a compressor, a heat exchange fan, and a heat exchanger, with the compressor connected to the evaporator.

[0008] Optionally, the fresh air module is arranged vertically above the outdoor unit module.

[0009] Optionally, the fresh air module further includes a top cover and side panels, which together with the partition form a housing structure for accommodating the fan, filter and evaporator; The outer side of the side plate and the lower side of the top cover are provided with sealing elements. The end of the side plate connected to the top cover has a bending structure. The bending structure is used to guide the sealing element located on the outer side of the side plate to bend towards the top cover so as to abut against the sealing element located on the lower side of the top cover.

[0010] Optionally, the fresh air module further includes a top cover and side panels, which together with the partition form a housing structure for accommodating the fan, filter and evaporator; The inner side of the side plate and the lower side of the top cover are provided with sealing elements. The end of the side plate connected to the top cover has a bending structure. The bending structure is used to guide the sealing element located on the outer side of the side plate to bend towards the top cover so as to abut against the sealing element located on the lower side of the top cover.

[0011] Optionally, the seal located on the outer side of the side plate is positioned above the side plate, and the portion of the seal above the side plate is bent toward the inner side of the side plate to abut against the seal located on the lower side of the top cover.

[0012] Optionally, the sealing element is specifically sealing cotton.

[0013] Optionally, it also includes an electronic control component, wherein a third receiving cavity is formed between the side plate of the housing structure and the panel of the frame, the third receiving cavity being connected to one side of the first receiving cavity, and the third receiving cavity being used to house the electronic control component.

[0014] Optionally, the electrical control assembly includes a terminal block and a control box, with the terminal block disposed within the third receiving cavity.

[0015] Optionally, the electrical control box is disposed in the third receiving cavity and is arranged vertically with the compressor. An inspection port is provided on the front panel, and the inspection port is provided corresponding to the electrical control box and the compressor. An inspection cover is provided on the inspection port.

[0016] Optionally, the electrical control box is located at the junction of the third and second accommodating cavities and is arranged vertically with the compressor. An inspection port is provided on the front panel, which is corresponding to the electrical control box and the compressor. The inspection port is provided with an inspection cover.

[0017] Optionally, the surface where the air inlet of the fresh air module is located is not coplanar with the surface where the air outlet of the heat exchange fan is located.

[0018] Optionally, the edge of the partition is bent toward the second receiving cavity to form a bent portion. The bent portion and the partition together form a heat insulation cavity to block the heat generated by the compressor from being transferred to the fresh air module and to reduce the formation of condensate on the partition.

[0019] Optionally, the insulation cavity is provided with an insulation board, which is a foam insulation board and / or a vacuum multilayer board; The inner wall of the heat insulation cavity is coated with a heat insulation coating.

[0020] Optionally, in the vertical direction, the evaporator is located above the heat exchanger, and a water collection tray is provided between the evaporator and the heat exchanger to collect condensate generated after fresh air flows through the evaporator. The water collection tray is provided with a drain outlet, which is positioned opposite to the heat exchanger. The heat exchanger has a first air duct formed along its air inlet direction, and the drain outlet is located upwind of the heat exchanger along the direction of the first air duct; it is used to guide the condensate in the water collection pan toward the heat exchanger and spray it onto the heat exchanger.

[0021] Optionally, the fan has a second air duct formed along its air inlet direction, the evaporator is disposed in the second air duct, and the drain outlet is disposed downwind of the evaporator along the direction of the second air duct. The drain outlet is located at the intersection of a first direction and a second direction of the water collection tray, where the first direction is the axial direction of the first air duct and the second direction is the axial direction of the second air duct.

[0022] Optionally, the fresh air module further includes a reheating component, which includes a reheating plate disposed between the evaporator and the fan and connected to the exhaust pipe of the compressor via a pipeline. High-pressure hot air discharged from the compressor is injected into the reheating plate to heat the incoming air when the evaporator temperature is too low or the fresh air volume is too small, resulting in excessively cold incoming air.

[0023] Optionally, the reheat plate is disposed in the water collection pan, and a base is provided at the bottom of the reheat plate, which is disposed in the water collection pan.

[0024] Optionally, the fresh air module further includes a guide rail, which is disposed within the housing structure. The filter is slidably connected to the housing structure via the guide rail. An opening suitable for the filter to slide out is provided on the side plate, and a detachable filter cover is provided on the opening. The direction in which the filter slides out within the guide rail faces the front or rear panel of the frame. The front panel is provided with a filter replacement port that matches the filter cover.

[0025] Compared with the prior art, the technical solution provided in this application has the following advantages: The aforementioned integrated fresh air unit, through the use of partitions and a panel, divides the frame into a first and second vertically aligned receiving cavity, with the fresh air module and outdoor unit module housed in two separate cavities, achieving physical isolation between them. The fresh air module does not directly contact the outdoor unit module during cooling and dehumidification, operating independently and effectively preventing temperature interference between the heat source and the cold source. Physically isolating the fresh air module and outdoor unit module in different cavities effectively isolates the transmission of vibration and noise. This design prevents the vibration of the outdoor unit module from impacting the upper fresh air module, preventing component loosening or resonance, and improving the operational stability and lifespan of the equipment. Furthermore, the physical isolation achieved through the partitions prevents airflow crosstalk between the fresh air module and the outdoor unit module; it also effectively prevents accidental leakage or splashing of condensate from the fresh air module into the lower outdoor unit module, avoiding the risk of short circuits or corrosion to electrical components such as the inverter and control box, ensuring the safe use of electronic components, and greatly improving the overall operational safety and reliability of the unit. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the integrated fresh air unit provided in this application; Figure 2 A schematic diagram of the housing structure of the integrated fresh air unit provided in this application; Figure 3 The structural diagrams of the fresh air module and outdoor unit module provided in this application are as follows; Figure 4 This is a structural diagram of the fresh air module provided in this application; Figure 5 A schematic diagram of the sealing structure of the fresh air module provided in this application; Figure 6 A cross-sectional schematic diagram of the sealing structure of the fresh air module provided in this application; Figure 7 A schematic diagram showing the corresponding positions of the electronic control module and the third receiving cavity provided in this application; Figure 8 A schematic diagram of the access port provided in this application; Figure 9 This is a schematic diagram of the spraying structure provided in this application; Figure 10 A schematic diagram of the condensate collection and spraying structure provided in this application; Figure 11 A schematic diagram showing the height relationship of the spraying structure provided in this application; Figure 12 A schematic diagram of the structure provided in this application, showing the reheat plate disposed within the water collection pan; Figure 13 A schematic diagram of the filter replacement structure provided in this application.

[0027] Explanation of reference numerals in the attached figures: 100. Frame; 110. Partition; 111. Bending section; 120. Panel; 121. Inspection cover; 130. First receiving cavity; 140. Second receiving cavity; 150. Third receiving cavity; 200. Fresh air module; 210. Fan; 220. Filter; 230. Evaporator; 240. Top cover; 250. Side plate; 251. Bending structure / filter cover; 260. Seal; 270. Water collection tray; 271. Drain outlet; 272. Water collection side plate; 273. Water collection bottom plate; 280. Reheating assembly; 281. Reheating plate; 282. Base; 290. Guide rail; 300. Outdoor unit module; 310. Compressor; 320. Heat exchange fan; 330. Heat exchanger; 400. Electrical control assembly; 410. Terminal block; 420. Control box. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] See Figure 1 , Figure 2 and Figure 7 An embodiment of the present invention provides a fresh air integrated unit, including a frame 100, and a fresh air module 200 and an outdoor unit module 300 disposed on the frame 100. The frame 100 includes a partition 110 and a panel 120. The partition 110 and the panel 120 form a first receiving cavity 130 and a second receiving cavity 140. The first receiving cavity 130 and the second receiving cavity 140 are arranged in a vertical direction. The fresh air module 200 and the outdoor unit module 300 are respectively disposed in the first receiving cavity 130 and the second receiving cavity 140, so that the fresh air module 200 and the outdoor unit module 300 are physically isolated.

[0030] In this embodiment, by setting a partition 110 and a panel 120, the frame 100 is divided into a first receiving cavity 130 and a second receiving cavity 140 arranged vertically, and the fresh air module 200 and the outdoor unit module 300 are respectively placed in two independent receiving cavities, achieving physical isolation between them. This layout first brings significant advantages in heat insulation and efficiency: when the fresh air module 200 is cooling and dehumidifying (as a cold source), it does not have direct contact with the outdoor unit module 300 (including the compressor 310 and other main heat sources), and they operate independently, effectively avoiding mutual temperature influence between the cold and hot sources.

[0031] Meanwhile, the compressor 310 and fan in the outdoor unit module 300 are the main sources of vibration. Physically isolating the fresh air module 200 from the outdoor unit module 300 in different housings effectively isolates the transmission of vibration and noise. This design prevents the operating vibration of the outdoor unit module 300 from impacting the upper fresh air module 200, prevents components from loosening or resonating, and improves the operational stability and service life of the equipment.

[0032] Furthermore, since the fresh air module 200 involves air handling and produces condensate during operation, while the outdoor unit module 300 contains core electrical components such as the compressor 310, inverter, and electrical control area, and also has a strong airflow, the physical isolation achieved by the partition 110 avoids airflow crosstalk between the fresh air module 200 and the outdoor unit module 300. On the other hand, it effectively prevents accidental leakage or splashing of condensate from the fresh air module 200 into the outdoor unit module 300 below, avoiding the risk of short circuits or corrosion to electrical components such as the inverter and electrical control box caused by moisture. This ensures the safe use of electronic components and greatly improves the overall operational safety and reliability of the unit.

[0033] See Figure 3 In one embodiment, the fresh air module 200 and the outdoor unit module 300 are arranged vertically, and the vertical projection of the fresh air module 200 falls within the vertical projection of the outdoor unit module 300. The fresh air module 200 includes a fan 210, a filter 220 and an evaporator 230, which are arranged sequentially along the air intake direction of the fan 210. The outdoor unit module 300 includes a compressor 310, a heat exchange fan 320 and a heat exchanger 330, and the compressor 310 is connected to the evaporator 230.

[0034] This embodiment provides a compact, integrated structural layout. First, the fresh air module 200 and the outdoor unit module 300 are arranged vertically, with the projection of the fresh air module 200 falling within the projection of the outdoor unit module 300—a stacked layout. This design integrates the traditionally separate indoor (fresh air) unit and outdoor unit into a unified housing, allowing them to share the same floor space, significantly saving horizontal installation space and resulting in a very compact overall structure.

[0035] Secondly, this embodiment clarifies the core functional components of the fresh air module 200 and the outdoor unit module 300, as well as their collaborative working path. The filter 220 and evaporator 230 within the fresh air module 200 are sequentially arranged along the air intake direction of the fan 210, defining the air handling flow path: outdoor fresh air is first filtered and purified by the filter 220, and then flows through the evaporator 230 for cooling and dehumidification. Placing the filter 220 upstream of the evaporator 230 effectively protects the evaporator 230 fins from dust blockage, ensuring long-term heat exchange efficiency and air quality.

[0036] Meanwhile, the compressor 310, heat exchange fan 320, and heat exchanger 330 (condenser) in the outdoor unit module 300 are connected to the evaporator 230 in the fresh air module 200 via refrigerant piping, forming a complete refrigeration cycle system. This allows the fresh air module 200 to actively process the temperature and humidity (refrigeration and dehumidification) of the filtered fresh air while introducing it, while the outdoor unit module 300 is responsible for providing power for this cycle and dissipating heat to the outside.

[0037] In summary, this layout integrates air ventilation and filtration functions as well as temperature and humidity control functions in the upper part, and integrates the power of the refrigeration cycle and heat dissipation functions in the lower part, thus realizing an integrated fresh air conditioning unit with a small footprint and complete functions.

[0038] See Figure 3 In one embodiment, the fresh air module 200 is vertically positioned above the outdoor unit module 300. Regarding structural stability, the outdoor unit module 300 typically contains heavier, more vibrating components such as the compressor 310 and a large heat exchange fan 320 (the large fan at the outdoor unit's exhaust port). Placing this heavier module at the bottom provides a stable and solid base for the entire unit, effectively lowering the overall center of gravity. This layout helps resist external forces and better suppresses and absorbs vibrations generated by the compressor 310 and the large fan during operation, ensuring smooth operation of the equipment.

[0039] See Figures 3 to 6An embodiment of the present invention provides a sealing structure for a fresh air module 200. The fresh air module 200 includes a top cover 240 and a side plate 250. The top cover 240, the side plate 250 and the partition 110 together form a shell structure for accommodating a fan 210, a filter 220 and an evaporator 230. A sealing element 260 is provided around the side plate 250, and the sealing element 260 protrudes from the upper end surface of the side plate 250, so that the sealing element 260 contacts the lower side surface of the top cover 240 to form a sealing structure.

[0040] This embodiment provides a sealing structure for a fresh air module 200. Through a compression sealing design, the airtightness of the fresh air module 200 housing is ensured, thereby preventing airflow short circuit and ensuring the operating efficiency of internal components such as the fan 210, filter 220, and evaporator 230.

[0041] Specifically, the housing of the fresh air module 200 is formed by a top cover 240, side plates 250, and partitions 110, which house core components such as the fan 210. When the fan 210 is running, it generates positive or negative pressure inside the housing. If the housing (especially the joint between the top cover 240 and the side plate 250) is not properly sealed, untreated air will leak in or treated air will leak out, resulting in an airflow short circuit. This will severely reduce the filtration efficiency of the filter 220 and the heat exchange efficiency of the evaporator 230. A key design feature of this embodiment is that the sealing element 260 is positioned around the side plate 250, with its upper end protruding from the upper surface of the side plate 250. This design ensures that when the top cover 240 is installed, the lower side of the top cover 240 will generate a pre-tightening compressive force with the protruding sealing element 260. This method of using component assembly pressure to compress and deform the seal 260 forms a continuous and reliable sealing barrier between the top cover 240 and the side plate 250, effectively ensuring the overall airtightness of the fresh air module 200 and ensuring that the airflow must flow through the filter 220 and evaporator 230 according to the designed path, thereby maximizing the performance and efficiency of the fresh air module 200.

[0042] See Figures 3 to 6 See Figure 3 and Figure 4 In one embodiment, the seal 260 is disposed on the outer side of the side plate 250, and the end of the side plate 250 connected to the top cover 240 has a bending structure for guiding the seal 260 located on the outer side of the side plate 250 to bend toward the top cover 240 to abut against the lower side of the top cover 240.

[0043] In this embodiment, the seal 260 is not simply placed on the top plane of the side plate 250 as in conventional designs, but is instead mounted on the outer side of the side plate 250. To ensure an effective seal between this side-mounted seal 260 and the top cover 240, a bending structure is incorporated at the top of the side plate 250. This bending structure serves a crucial guiding and steering function. When the top cover 240 is installed downwards, this bending structure acts as a guide ramp, guiding and forcing the seal 260, which was originally vertically attached to the outer side of the side plate 250, to bend towards the top cover 240, ultimately turning it and tightly abutting against the horizontal lower side of the top cover 240.

[0044] Therefore, this solution addresses the geometric challenge of achieving a reliable seal between a side-mounted seal 260 and a horizontal surface (the underside of the top cover 240). Compared to simple planar compression seals, this guide-bend-abutment method creates a longer sealing path, more thorough contact, and is less sensitive to slight misalignments between the side plate 250 and the top cover 240 that may occur during installation, offering greater fault tolerance. This ensures the airtightness of the fresh air module 200 housing and effectively prevents airflow short-circuiting.

[0045] In one embodiment, the seal 260 is disposed on the inner side of the side plate 250, and the end of the side plate 250 connected to the top cover 240 has a bending structure. The bending structure is used to guide the seal 260 located on the inner side of the side plate 250 to bend toward the top cover 240 so as to abut against the lower side of the top cover 240.

[0046] In this embodiment, a highly reliable and fault-tolerant seal is achieved through a sophisticated guiding structure to ensure the airtightness of the fresh air module 200. The seal 260 is located on the inner side of the side plate 250, facing the fan 210 and the internal airflow. Simultaneously, a bending structure is provided at the top of the side plate 250. This bending structure (whether inward or outward) plays a crucial guiding and steering role. When the top cover 240 is installed, it presses downward. This bending structure guides the seal 260, which was originally vertically attached to the inner side of the side plate 250, to bend towards the top cover 240, ultimately turning it and tightly abutting against the horizontal lower side of the top cover 240.

[0047] Similar to the previous embodiment, it utilizes a guide-bend-abutment mechanism to form a longer and more complex sealing path than a traditional planar compression seal, more effectively preventing airflow short-circuiting and ensuring the operational efficiency of the fan 210, filter 220, and evaporator 230. Since the seal 260 is located on the inner side, if the fan 210 generates positive pressure within the housing, this pressure acts directly on the seal 260, pressing it more tightly against the corner formed by the side plate 250 and the top cover 240. This design may utilize airflow pressure to achieve a self-reinforcing seal, further improving the module's airtightness during operation.

[0048] In one embodiment, the seal 260 located on the outer side of the side plate 250 is provided higher than the side plate 250. The portion of the seal 260 that is higher than the side plate 250 is bent toward the inner side of the side plate 250 and fits against the surface portion of the bending structure along the bending direction. In the connected state, the bending structure and the top cover 240 abut against and squeeze the seal 260 together.

[0049] In this embodiment, the technical advantage lies in the construction of a composite sealing structure through a pre-bending and double-extrusion design, thereby achieving an extremely high level of airtightness. The seal 260 is not only located on the outer side of the side plate 250, but its portion extending beyond the side plate 250 is also pre-bent towards the inner side of the side plate 250. This pre-bent portion fits into the bent structure at the top of the side plate 250. This is equivalent to pre-forming an L-shaped sealing lip at the corner of the top of the side plate 250.

[0050] When the top cover 240 is installed, the seal 260 is subjected to pressure from two directions simultaneously. First, the lower side of the top cover 240 presses vertically downward against the top of the seal 260; second, the bent structure of the side plate 250 abuts against the bent portion 111 of the seal 260 from a horizontal upward direction, providing rigid support and compression force. The seal 260 no longer relies solely on a single vertical compression force for sealing, but is jointly abutted and pressed between the top cover 240 and the side plate 250, allowing the seal 260 to more fully fill the gap, creating a longer, more complex, and more robust sealing path, which can more effectively prevent airflow short-circuiting, thereby maximizing the operating efficiency of the fresh air module 200.

[0051] In one embodiment, the seal 260 located on the outer side of the side plate 250 is provided higher than the side plate 250. The portion of the seal 260 that is higher than the side plate 250 is bent toward the inner side of the side plate 250 and is completely in contact with the surface of the bending structure along the bending direction. In the connected state, the bending structure and the top cover 240 abut against and squeeze the seal 260 together.

[0052] In this embodiment, a near-gap-free, highly reliable composite sealing structure is constructed through a fully fitted design combined with double compression.

[0053] Compared to the previous embodiment, the key feature of this solution is that the portion of the seal 260 extending above the side plate 250 not only bends inward but also completely fits the surface of the bent structure along the bending direction. This complete fit means that before the top cover 240 is installed, the L-shaped sealing lip has already achieved precise matching and tight contact with the bent structure of the side plate 250 in terms of shape, eliminating the initial gap between components.

[0054] Because the seal 260 is pre-fitted completely onto the bent structure, it will not shift, twist, or fold incorrectly during the installation of the top cover 240. This ensures that every assembly achieves the designed sealing state, improving production consistency. When the top cover 240 and the bent structure abut and compress the seal 260, the pressure is evenly distributed across the entire contact surface due to the complete fit of the seal 260. This avoids stress concentration points that may result from partial fitting, making the seal more uniform and durable. The complete fit design fundamentally eliminates any tiny gaps between the seal 260 and the bent structure. Under double compression, the sealing material forms an extremely dense and robust sealing barrier, providing higher sealing reliability than partial fitting and more thoroughly preventing airflow short-circuiting.

[0055] In one embodiment, a seal 260 is also provided on the lower side of the top cover 240, and the seal 260 provided on the side plate 250 abuts against the seal 260 provided on the lower side of the top cover 240. In this embodiment, the technical advantage lies in the construction of a highly reliable and more manufacturing-tolerant sealing barrier through the double-sealing design of seal 260 against seal 260. The sealing no longer relies on a single seal 260 to compress and adhere to a rigid metal or plastic surface, but rather seals 260 are provided on both mating surfaces (i.e., the top of the side plate 250 and the lower side of the top cover 240), and these two seals 260 abut against each other.

[0056] Two flexible, deformable seals 260 press against each other to form a denser, more closely fitting seal. Even if one seal 260 has minor imperfections, unevenness, or undergoes permanent compression deformation after prolonged use, the other seal 260 can effectively compensate for these gaps. This dual-safety design significantly reduces the risk of leakage.

[0057] The compression of a single seal 260 by a rigid surface is highly sensitive to the assembly distance between components (i.e., the gap between the top cover 240 and the side plate 250). However, the design of seal 260 allows for a much larger effective sealing compression range. The total deformation of the two seals 260 can absorb greater manufacturing tolerances and assembly errors, ensuring consistent and reliable sealing across different individual products.

[0058] In one embodiment, the seal 260 is a flexible material seal 260. In this embodiment, the material of the seal 260 is explicitly defined as a flexible material, which has elasticity and compressibility, the basis for achieving the sealing function. Whether it is pressed vertically by the top cover 240 through the protruding side plate 250, or guided and jointly compressed by the bending structure, the material's flexibility must deform to tightly fill the potential gap between the top cover 240 and the side plate 250. This deformability ensures that the seal 260 can form a continuous airtight barrier, effectively preventing airflow short-circuiting.

[0059] In actual production, it is difficult to guarantee zero error in the manufacturing and assembly of sheet metal parts such as the top cover 240 and side panels 250, and tolerances will exist in the gaps between them. Rigid materials cannot adapt to this variation, while flexible materials can. They allow for varying degrees of compressive deformation within a certain range, thereby effectively absorbing these tolerances and ensuring a stable and reliable sealing effect across different product units.

[0060] In one embodiment, the seal 260 is specifically a sealing cotton. In this embodiment, the seal 260 is specifically made of sealing cotton, which has the technical advantage of utilizing the specific physical properties of this material to achieve efficient sealing while providing excellent vibration isolation and noise reduction functions.

[0061] Sealing cotton is a porous, highly elastic, and highly compressible flexible material. Its high compressibility allows it to deform significantly with minimal assembly pressure, thus filling any minute gaps between the top cover 240 and the side plate 250. This makes it highly effective in compensating for manufacturing tolerances, achieving highly reliable airtightness and preventing airflow short-circuiting. More importantly, the porous and loose structure of the sealing cotton also provides some thermal insulation properties, helping to maintain temperature stability inside the shell.

[0062] In one embodiment, the bending structure is a continuous or discontinuous bending surface. In this embodiment, the bending structure is designed as a continuous or discontinuous bending surface, providing a completely uninterrupted guiding and supporting surface. This ensures that the seal 260 (such as sealing cotton) is uniformly guided and compresses against the top cover 240 along the entire length of the side plate 250. This design provides the most uniform compression force and the most reliable sealing path, while significantly enhancing the structural rigidity of the top of the side plate 250.

[0063] Manufacturing a series of discontinuous short folds using a stamping process typically reduces production costs compared to manufacturing a single, continuous long fold, as the mold complexity and material consumption are generally lower. Although the bending structure is discontinuous, these discontinuous surfaces still provide sufficient guiding force and support at critical points. Because the seal 260 is made of a flexible material, it has sufficient elasticity to bridge the small gaps between these discontinuities and maintain a continuous and effective airtight barrier under the pressure of the top cover 240.

[0064] Therefore, this embodiment allows designers to flexibly choose between a discontinuous structure with lower manufacturing costs or a continuous structure with more uniform support and stronger rigidity, depending on their different priorities regarding sealing level, structural rigidity, and cost control. Both can achieve the reliable sealing effect required to prevent airflow short circuits.

[0065] See Figure 7 In one embodiment, the device further includes an electronic control component 400. A third receiving cavity 150 is formed between the side plate 250 of the housing structure and the panel 120 of the frame 100. The third receiving cavity 150 is connected to one side of the first receiving cavity 130 and is used to house the electronic control component 400.

[0066] In this embodiment, a separate third receiving cavity 150 is added between the housing side plate 250 and the frame 100 panel 120, and connected to one side of the first receiving cavity 130, i.e., the cavity where the fresh air module 200 is located. This cavity is specifically used to house the electrical control assembly 400. This layout first and foremost brings significant convenience to maintenance. It centrally arranges the electrical control assembly 400 in a specific area on the upper part of the equipment. When needed, maintenance personnel only need to remove the corresponding external side plate 250 to directly access and operate the electrical control box, without disassembling the core air duct or refrigeration piping system of the equipment, greatly simplifying the maintenance and inspection process.

[0067] More importantly, the first receiving cavity 130, located at the upper part of the equipment, is the main area for air processing and condensate generation. By placing the electrical control assembly 400 in a separate chamber to one side of the first receiving cavity 130, rather than inside or directly below it, the water path is effectively isolated physically. This layout prevents moisture from the fresh air module 200, generated by condensation, splashing, or potential leakage, from entering the electrical control area, avoiding the risk of short circuits or moisture damage to electronic components, and significantly improving the safety and reliability of equipment operation.

[0068] See Figure 7 In one embodiment, the electronic control assembly 400 includes a terminal block 410 and a control box 420, with the terminal block 410 disposed within a third receiving cavity 150.

[0069] In this embodiment, the terminal block 410 serves as the access point for external power and signals. Its connection points are typically difficult to seal to a high degree, making it particularly sensitive to moisture and humidity. Therefore, this solution places the terminal block 410 within the third receiving cavity 150. The third receiving cavity 150 connects to the fresh air module 200 (first receiving cavity 130), and its core function is to achieve water and electricity separation, providing a dry and protected environment for internal components. Placing the terminal block 410 here utilizes the physical barrier of this cavity to ensure the required sealing, effectively preventing condensate from the fresh air module 200 or external moisture from intruding, thereby ensuring the safe operation of the high-voltage electrical connection points.

[0070] Secondly, control boxes 420 (such as frequency converters) are typically designed as sealed units with a high level of protection, and their housings are already effectively dustproof and waterproof. Based on this, this design allows them to be placed in other locations within the third receiving cavity 150, such as at the connection point with the second receiving cavity 140. This layout also considers heat dissipation requirements; the control box 420 generates a significant amount of heat during operation, and placing it on the outer edge of the cavity improves heat dissipation efficiency. This effectively prevents heat from accumulating within the sealed third receiving cavity 150, preventing the control box 420 from malfunctioning due to overheating, and significantly improving the reliability and lifespan of electronic components.

[0071] See Figure 8 In one embodiment, the electrical control box is disposed in the third receiving cavity 150 and is arranged vertically with the compressor 310. A maintenance port is provided on the front panel 120, which is corresponding to the electrical control box and the compressor 310. A maintenance cover plate 121 is provided on the maintenance port.

[0072] This embodiment provides a highly integrated and convenient maintenance layout. First, the electrical control box and compressor 310 are arranged vertically, which aligns the electrical control core (electrical control box) in the upper part of the equipment (located in the third accommodating cavity 150) with the refrigeration power core (compressor 310) in the lower part of the equipment (located in the outdoor unit module 300) in space.

[0073] Based on this aligned layout, this solution further achieves centralized front maintenance of critical components by setting a unified access port on the front panel 120 that simultaneously corresponds to the electrical control box and the compressor 310. Maintenance personnel no longer need to operate from different sides of the equipment (e.g., removing side panel 250 to access the electrical control, or removing other panels 120 to access the compressor 310). Instead, they only need to remove the front access cover 121 to simultaneously inspect, debug, or replace the upper electrical system and the lower mechanical system from a single, convenient entry point. This design highly centralizes and front-loads critical maintenance points, greatly simplifying installation and after-sales processes and shortening maintenance time.

[0074] In one embodiment, the electrical control box is located at the junction of the third receiving cavity 150 and the second receiving cavity 140, and is arranged vertically with the compressor 310. A maintenance port is provided on the front panel 120, and the maintenance port is correspondingly arranged with the electrical control box and the compressor 310. A maintenance cover plate 121 is provided on the maintenance port.

[0075] In one embodiment, the surface where the air inlet of the fresh air module 200 is located is not coplanar with the surface where the air outlet of the heat exchange fan 320 is located.

[0076] In this embodiment, the air inlet of the fresh air module 200 is not coplanar with the air outlet of the heat exchange fan 320 (i.e., the outdoor unit's main fan), which is an anisotropic airflow layout. The core technical effect of this design is to effectively prevent airflow short-circuiting. The heat exchange fan 320 of the outdoor unit module 300 is responsible for exhausting the unit's heat (during cooling) or cold (during heating) to the outdoor environment. Meanwhile, the air inlet of the fresh air module 200 needs to draw in fresh ambient air from the outside.

[0077] If the air inlet and outlet are on the same plane, the high-temperature exhaust gas discharged by the heat exchange fan 320 can easily be re-drawn into the nearby air inlet. This airflow short-circuit causes the air temperature drawn into the fresh air module 200 to be much higher than the ambient temperature, forcing the fresh air module 200 to do extra work to cool this hot air, thereby greatly reducing the cooling efficiency and overall performance of the system.

[0078] By setting the air inlet and outlet in non-coplanar positions (for example, as shown in the figure, the exhaust outlet is on the front of the equipment, while the air inlet is on the side of the equipment), it can be ensured that the direction of the exhaust gas airflow is staggered with the direction of the fresh air inflow. The exhaust gas is guided away from the air inlet, so that the fresh air module 200 can truly draw in unpolluted fresh air from the environment, ensuring the efficient and energy-saving operation of the whole machine.

[0079] See Figure 4 In one embodiment, the edge of the partition 110 is bent toward the second receiving cavity 140 to form a bent portion 111. The bent portion 111 and the partition 110 together form a heat insulation cavity to block the heat generated by the compressor 310 from being transferred to the fresh air module 200 and to reduce the formation of condensate on the partition 110.

[0080] In this embodiment, by bending the edge of the partition 110 toward the second receiving cavity 140 (outdoor unit module 300), the bent portion 111 and the body of the partition 110 together form a heat-insulating cavity, creating a thermal barrier between the upper and lower cavities. The enclosed air layer inside the cavity is an excellent heat-insulating medium, which can significantly block the heat generated by the heat source in the second receiving cavity 140 (outdoor unit module 300)—especially the compressor 310—from being conducted upwards to the first receiving cavity 130 (fresh air module 200). This effectively prevents the heat from below from interfering with the cooling efficiency of the upper fresh air module 200 (especially the evaporator 230, which acts as a cold source), ensuring the high-efficiency operation of the entire unit.

[0081] Secondly, this structure effectively prevents condensation formation. In cooling mode, the upper fresh air module 200 (cold source) causes the temperature of the partition 110 to become very low. Without this insulation chamber, the bottom surface of the partition 110 facing the outdoor unit (i.e., the hot side) would also become icy cold. When the hot, humid air inside the outdoor unit comes into contact with this cold bottom surface, it will quickly reach the dew point and condense into water droplets. The "insulation chamber" (air jacket) in this design acts as a thermal barrier, ensuring that the surface temperature of the lowermost bend 111 remains above the dew point and does not become too cold. This significantly reduces the formation of condensation at the bottom of the partition 110, effectively preventing condensation from dripping onto the compressor 310, inverter, or other electrical components below, significantly improving the operational safety and reliability of the equipment.

[0082] In one embodiment, the insulation cavity is provided with an insulation board, which is a foam insulation board and / or a vacuum multilayer board, and the inner wall surface of the insulation cavity is coated with an insulation coating.

[0083] This embodiment further strengthens and refines the aforementioned "insulation cavity" solution. By filling the insulation cavity with a foam insulation board (e.g., foam pad) or a high-performance vacuum multilayer board, and / or coating the inner wall of the cavity with an insulation coating, the foam board or vacuum multilayer board used in this solution is an insulation material with extremely low thermal conductivity. They can more effectively block the upward conduction of heat from heat sources such as the compressor 310 in the second receiving cavity 140, providing better cold source protection for the upper first receiving cavity 130 (fresh air module 200), thereby maximizing the cooling efficiency of the entire unit.

[0084] The powerful thermal barrier achieved through this composite insulation structure reliably ensures that the bottom surface temperature of the partition 110 facing the outdoor unit is always well above the dew point. This significantly improves the anti-condensation effect when the equipment operates in extreme environments such as high temperature and high humidity, effectively preventing condensate from forming on the partition 110, thus providing a higher level of safety protection for the electronic and electrical components below, such as the frequency converter and compressor 310.

[0085] See Figure 9 An embodiment of the present invention provides a fresh air conditioning unit, including a fresh air module 200 and an outdoor unit module 300. The fresh air module 200 includes a fan 210, a filter 220, and an evaporator 230, with the evaporator 230 disposed between the filter 220 and the fan 210. The outdoor unit includes a compressor 310 and a heat exchanger 330, with the compressor 310 connected to the evaporator 230. In the vertical direction, the evaporator 230 is located above the heat exchanger 330. A water collection tray 270 is also provided between the evaporator 230 and the heat exchanger 330 to collect the condensate generated after the fresh air flows through the evaporator 230. The water collection tray 270 is provided with a drain outlet 271, which is positioned opposite to the heat exchanger 330. The heat exchanger 330 has a first air duct formed along its air inlet direction, and the drain outlet 271 is located upwind of the heat exchanger 330 along the direction of the first air duct; it is used to guide the condensate in the water collection pan 270 toward the heat exchanger 330 and spray it onto the heat exchanger 330.

[0086] In this embodiment, the condensate is reused by utilizing the inherent operating characteristics of the equipment. Specifically, the evaporator 230 in the fresh air module 200 is vertically positioned above the heat exchanger 330 in the outdoor unit module 300. This height difference allows the condensate generated by the fresh air flowing through the evaporator 230 to drip naturally under gravity and be effectively collected by the water collection tray 270 located between them. The water collection tray 270 has a drain outlet 271, which is opposite to the heat exchanger 330 below. The core of this embodiment is that the heat exchanger 330 has a first air duct formed along its air intake direction, and the drain outlet 271 of the water collection tray 270 is located upwind of this first air duct. When the condensate in the water collection tray 270 falls through the drain outlet 271, it directly enters the air intake airflow of the heat exchanger 330. Under the force of the airflow, the falling water or droplets are effectively dispersed and atomized into smaller water droplets. These lighter water droplets are then carried by the airflow in the duct, causing them to drift a longer distance and over a wider area compared to traditional larger water droplets, thus evenly spraying and covering a larger surface area of ​​the heat exchanger 330. This process not only utilizes condensate to assist heat exchanger 330 in heat dissipation, significantly improving heat exchange efficiency, but also achieves effective treatment of condensate.

[0087] See Figure 10 In one embodiment, the fan 210 has a second air duct formed along its air inlet direction, the evaporator 230 is disposed in the second air duct, and the drain outlet 271 is disposed downwind of the evaporator 230 along the direction of the second air duct. The drain outlet 271 is disposed at the intersection of a first direction and a second direction of the water collection tray 270, the first direction being the axial direction of the first air duct and the second direction being the axial direction of the second air duct.

[0088] This embodiment further optimizes the condensate collection process. The fan 210 forms a second air duct in its air intake direction, and the evaporator 230 is disposed within this second air duct. Since the evaporator 230 is located after the filter 220, the moisture-laden air entering the second air duct contains fewer impurities, resulting in purer condensate. This pure condensate is more easily agitated by the suction force of the fan 210 compared to water containing more impurities.

[0089] In this embodiment, the drain outlet 271 is positioned downwind of the second air duct relative to the evaporator 230. This arrangement allows the suction force of the fan 210 to actively push the easily blown condensate formed on the evaporator 230 along the direction of the second air duct, and collect it to a specific side of the water collection tray 270, namely the downwind side where the drain outlet 271 is located. Simultaneously, the drain outlet 271 is also positioned at the intersection of a first direction (the axis of the first air duct) and a second direction (the axis of the second air duct), ensuring the accuracy of water flow collection. Under the continuous suction force of the fan 210, the water on this side of the water collection tray 270 changes from still water to flowing water. This flowing trend, compared to a still water state, further accelerates the process of condensate flowing out of the drain outlet 271, providing stable support for subsequent efficient spraying into the first air duct.

[0090] See Figure 11 In one embodiment, the vertical distance between the evaporator 230 and the water collection tray 270 is H1, and the vertical distance between the water collection tray 270 and the heat exchanger 330 is H2, where H1 < H2.

[0091] In this embodiment, the vertical relative positions of the evaporator 230, the water collection tray 270 and the heat exchanger 330 are further defined. The vertical distance between the evaporator 230 and the water collection tray 270 is set to H1, while the vertical distance between the water collection tray 270 and the heat exchanger 330 is set to H2, and H1 is made smaller than H2. This asymmetric spacing setting of H1 < H2 is designed to synergistically optimize the two stages of condensate collection and spraying: On the one hand, the smaller spacing H1 shortens the distance from the evaporator 230 to the collection pan 270, effectively reducing the interference of the second airflow during the droplet's descent and ensuring that the condensate can be collected stably and efficiently into the collection pan 270; on the other hand, the larger spacing H2 provides a longer working distance and more space for the condensate to fall from the drain outlet 271 of the collection pan 270 to the heat exchanger 330, allowing the airflow in the first airflow to more fully disperse and atomize the falling droplets, making the water droplets spread farther and more evenly, thereby significantly increasing the coverage area on the heat exchanger 330 and enhancing the heat dissipation effect.

[0092] See Figure 11 In one embodiment, the vertical projection of the evaporator 230 falls into the water collection tray 270, and the vertical projection of the evaporator 230 coincides with the vertical projection of the heat exchanger 330.

[0093] This embodiment further clarifies the spatial correspondence between key components. The vertical projection of the evaporator 230 falls entirely within the range of the water collection tray 270. This arrangement ensures that the water collection tray 270 has sufficient coverage area to fully receive and collect the condensate dripping from the evaporator 230, thereby maximizing water collection efficiency and preventing condensate leakage to other areas of the equipment. Simultaneously, the vertical projection of the evaporator 230 partially overlaps with the vertical projection of the heat exchanger 330. This partially overlapping staggered layout allows the downwind portion of the second air duct of the evaporator 230 to be positioned above the upwind portion of the first air duct of the heat exchanger 330. This ensures that the drain outlet 271 located at this intersection can efficiently collect the condensate propelled by the airflow from the second air duct and release water droplets into the optimal action area of ​​the airflow from the first air duct, achieving maximum dispersion, atomization, and large-area spraying, thereby enhancing the heat dissipation effect of the heat exchanger 330.

[0094] See Figure 10 In one embodiment, the water collection tray 270 includes a water collection side plate 272 and a water collection bottom plate 273, with adjacent water collection side plates 272 being parallel to the first direction and the second direction, respectively.

[0095] In this embodiment, the geometry of the water collection tray 270 is defined, comprising a water collection base plate 273 and adjacent water collection side plates 272 parallel to the first direction (the direction of the first air duct axis) and the second direction (the direction of the second air duct axis), respectively. This structure of the water collection side plates 272, parallel to the air duct axis, ensures that the shape of the water collection tray 270 (e.g., forming a rectangular corner) matches the aerodynamic flow field within the device. This structural design ensures that the water collection tray 270 effectively encloses a specific water collection space, namely the intersection of the first and second directions mentioned above. In this way, the condensate propelled by the airflow from the second air duct is guided and constrained by the water collection side plates 272 parallel to the second direction, thus being collected at the corner of the intersection. This ensures that the condensate stably accumulates above the drain outlet 271 (located at the intersection), providing a stable water source for subsequent spraying using the airflow from the first air duct.

[0096] In one embodiment, a water collection side plate 272 located upwind along the direction of the first air duct, together with a water collection side plate 272 located downwind along the direction of the second air duct and a water collection bottom plate 273, forms a space for setting a drain outlet 271, which is located on the water collection bottom plate 273 within the space.

[0097] In this embodiment, the space on the water collection tray 270 for setting the drain outlet 271 is specifically defined. By setting a water collection side plate 272 located upwind along the first air duct direction and a water collection side plate 272 located downwind along the second air duct direction, and having them together with the water collection base plate 273 to enclose the space, a physical intersection of the first and second directions is formed. The water collection side plate 272 located downwind along the second air duct direction serves to guide and block, ensuring that the condensate pushed by the airflow of the second air duct can be collected and confined within the enclosed space. The drain outlet 271 is set on the water collection base plate 273 within this space, which allows the condensate collected by the airflow of the second air duct to flow out stably and centrally from the drain outlet 271 and be directly released into the upwind area of ​​the first air duct directly below, providing an optimal release point for subsequent airflow to disperse and atomize it, thus enhancing the overall spraying and heat dissipation effect.

[0098] In one embodiment, the drain outlet 271 is provided with a water-falling structure to disrupt surface tension. In this embodiment, a further water-falling structure to disrupt surface tension is provided on the drain outlet 271. The presence of this structure can effectively overcome the accumulation and adhesion effect of condensate at the edge of the drain outlet 271 due to surface tension. This makes it difficult for condensate to gather into large water droplets or clumps at the outlet, but instead causes it to fall in a smaller, more easily separated form (e.g., a finer stream or smaller droplets). These droplets have a smaller mass and a larger specific surface area, and when they enter the first air duct below, they are more easily captured, dispersed, and atomized by the airflow, thereby further improving the uniformity and coverage of condensate spraying on the heat exchanger 330 and enhancing the heat dissipation effect.

[0099] In one embodiment, the water collection base plate 273 of the water collection tray 270 is provided with a slope, which tends to tilt toward the drain outlet 271 to guide the condensate in the water collection tray 270 to flow toward the drain outlet 271.

[0100] In this embodiment, to further enhance the collection effect of condensate and ensure smooth drainage, a slope is specially provided on the water collection base plate 273 of the water collection tray 270. This slope tends to tilt towards the side where the drain outlet 271 is located. Through this structural design, gravity is used to passively guide the condensate in the water collection tray 270. In this way, even when the airflow in the second duct is weak, or when the equipment is operating at low wind speed, the condensate on the water collection base plate 273 can automatically and continuously flow towards the drain outlet 271 under the pull of gravity. This effectively avoids large-area accumulation or stagnation of condensate on the water collection base plate 273, ensuring that the water flow can be stably collected at the drain outlet 271, providing a continuous and reliable water supply for subsequent spraying and atomization in the first duct.

[0101] See Figure 12 In one embodiment, the fresh air module 200 further includes a reheating assembly 280, which includes a reheating plate 281 disposed between the evaporator 230 and the fan 210 and connected to the exhaust pipe of the compressor 310 via a pipeline. By injecting high-pressure hot air discharged by the compressor 310 into the reheating plate 281, the incoming air is heated when the temperature of the evaporator 230 is too low or the fresh air volume is too small, resulting in the incoming air being too cold.

[0102] This embodiment achieves waste heat recovery, offering significant energy-saving advantages. It does not rely on an additional electric heater to heat the air, but cleverly utilizes the waste heat inevitably generated during the refrigeration cycle—namely, the high-pressure hot air discharged from the compressor 310. This high-pressure hot air is injected into the reheat plate 281 through pipelines, achieving air heating with zero additional energy consumption—a highly efficient energy-saving solution.

[0103] Secondly, this solution effectively prevents overcooling and significantly improves user comfort. During dehumidification, the evaporator 230 needs to operate at a very low temperature to extract moisture, but this can lead to excessively cold intake air. This solution places the reheat plate 281 downstream of the evaporator 230. After the air is cooled and dehumidified by the evaporator 230, it is immediately heated by the reheat plate 281, ensuring that the air ultimately delivered into the room is both dry and comfortable, avoiding the discomfort caused by excessively cold air blowing directly on the body.

[0104] Finally, the design connects the reheat module to the compressor 310 discharge pipe and the condenser module via piping, tightly integrating the reheat function with the refrigeration cycle (heat recovery). High-pressure hot gas releases heat to the air in the reheat plate 281 and is pre-cooled before entering the main condenser, which helps improve the overall refrigeration system's cycle efficiency.

[0105] See Figure 12 In one embodiment, a reheat plate 281 is disposed within a water collection tray 270, and a base 282 is provided at the bottom of the reheat plate 281, which is disposed within the water collection tray 270.

[0106] See Figure 13 In one embodiment, the fresh air module 200 further includes a guide rail 290, which is disposed within the housing structure. The filter 220 is slidably connected to the housing structure via the guide rail 290. An opening suitable for the filter 220 to slide out is provided on the side plate 250, and a filter 220 cover plate is provided on the opening. The direction in which the filter 220 slides out within the guide rail 290 is towards the front panel 120 or the rear panel 120 of the frame 100. The front panel 120 is provided with a filter 220 replacement port that is adapted to the filter 220 cover plate.

[0107] This embodiment provides a filter 220 replacement structure that greatly improves maintenance convenience and installation adaptability. First, by setting guide rails 290, the filter 220 is installed in the housing structure in a sliding connection manner (similar to a drawer). This design makes the removal and installation process of the filter 220 smooth, easy, and clearly guided. Users can accurately slide the filter 220 in or out without special skills, avoiding problems such as jamming, deformation, or improper installation that may occur during replacement.

[0108] See Figure 13 As shown in the embodiment, the filter 220 can slide out towards the front or rear of the frame 100. This means that, combined with the filter 220 replacement port on the front (or rear) panel 120, maintenance personnel can freely choose to slide out and replace the filter 220 from the front or rear of the equipment, depending on the actual installation environment (e.g., whether the rear is against a wall or whether there are obstructions in front). This design, which allows for replacement from both the front and rear, greatly improves the adaptability of the equipment for on-site installation and the convenience of after-sales maintenance, offering significant advantages compared to solutions that only provide replacement from one side.

[0109] Finally, the detachable filter cover 220 on the opening ensures that the access opening for the filter 220 is reliably sealed when not under maintenance. This prevents air leakage or short-circuiting from the opening, ensuring the filtration efficiency of the fresh air module 200, and also protects the internal filter 220 from external environmental contamination.

[0110] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fresh air conditioning unit, comprising a frame (100), and a fresh air module (200) and an outdoor unit module (300) disposed on the frame (100), characterized in that, The rack (100) includes a partition (110) and a panel (120). The partition (110) and the panel (120) form a first receiving cavity (130) and a second receiving cavity (140). The first receiving cavity (130) and the second receiving cavity (140) are arranged in a vertical direction. The fresh air module (200) and the outdoor unit module (300) are respectively arranged in the first receiving cavity (130) and the second receiving cavity (140), so that the fresh air module (200) and the outdoor unit module (300) are physically isolated.

2. The integrated fresh air conditioning unit according to claim 1, characterized in that, The fresh air module (200) and the outdoor unit module (300) are arranged vertically, and the vertical projection of the fresh air module (200) falls within the vertical projection of the outdoor unit module (300). The fresh air module (200) includes a fan (210), a filter (220) and an evaporator (230). The filter (220) and the evaporator (230) are arranged sequentially along the air intake direction of the fan (210). The outdoor unit module (300) includes a compressor (310), a heat exchange fan (320) and a heat exchanger (330). The compressor (310) is connected to the evaporator (230).

3. The integrated fresh air conditioning unit according to claim 1, characterized in that, The fresh air module (200) is vertically positioned above the outdoor unit module (300).

4. The integrated fresh air conditioning unit according to claim 2, characterized in that, The fresh air module (200) also includes a top cover (240) and a side plate (250), the top cover (240), the side plate (250) and the partition (110) together form a shell structure for accommodating the fan (210), the filter (220) and the evaporator (230); The outer side of the side plate (250) and the lower side of the top cover (240) are provided with sealing elements (260). The end of the side plate (250) connected to the top cover (240) has a bending structure. The bending structure is used to guide the sealing element (260) located on the outer side of the side plate (250) to bend toward the top cover (240) so as to abut against the sealing element (260) located on the lower side of the top cover (240).

5. The integrated fresh air conditioning unit according to claim 2, characterized in that, The fresh air module (200) also includes a top cover (240) and a side plate (250), the top cover (240), the side plate (250) and the partition (110) together form a shell structure for accommodating the fan (210), the filter (220) and the evaporator (230); The inner side of the side plate (250) and the lower side of the top cover (240) are provided with sealing elements (260). The end of the side plate (250) connected to the top cover (240) has a bending structure. The bending structure is used to guide the sealing element (260) located on the outer side of the side plate (250) to bend toward the top cover (240) so as to abut against the sealing element (260) located on the lower side of the top cover (240).

6. The integrated fresh air conditioning unit according to claim 4, characterized in that, The seal (260) located on the outer side of the side plate (250) is provided above the side plate (250), and the portion of the seal (260) above the side plate (250) is bent toward the inner side of the side plate (250) to abut against the seal (260) located on the lower side of the top cover (240).

7. The integrated fresh air conditioning unit according to claim 4, characterized in that, The sealing element (260) is specifically sealing cotton.

8. The integrated fresh air conditioning unit according to claim 4, characterized in that, It also includes an electronic control assembly (400), and a third receiving cavity (150) is formed between the side plate (250) of the housing structure and the panel (120) of the frame (100). The third receiving cavity (150) is connected to one side of the first receiving cavity (130), and the third receiving cavity (150) is used to house the electronic control assembly (400).

9. The integrated fresh air conditioning unit according to claim 8, characterized in that, The electrical control assembly (400) includes a terminal block (410) and a control box (420), wherein the terminal block (410) is disposed in a third receiving cavity (150).

10. The integrated fresh air conditioning unit according to claim 8, characterized in that, The electrical control box is located in the third accommodating cavity (150) and is arranged vertically with the compressor (310). A maintenance port is provided on the front panel (120), which is corresponding to the electrical control box and the compressor (310). A maintenance cover plate (121) is provided on the maintenance port.

11. The integrated fresh air conditioning unit according to claim 8, characterized in that, The electrical control box is located at the junction of the third accommodating cavity (150) and the second accommodating cavity (140), and is arranged vertically with the compressor (310). A maintenance port is provided on the front panel (120), and the maintenance port is provided in correspondence with the electrical control box and the compressor (310). A maintenance cover plate (121) is provided on the maintenance port.

12. The integrated fresh air conditioning unit according to claim 2, characterized in that, The air inlet of the fresh air module (200) is not on the same plane as the air outlet of the heat exchange fan (320).

13. The integrated fresh air conditioning unit according to claim 2, characterized in that, The edge of the partition (110) is bent toward the second receiving cavity (140) to form a bent portion (111). The bent portion (111) and the partition (110) together form a heat insulation cavity to block the heat generated by the compressor (310) from being transferred to the fresh air module (200) and to reduce the formation of condensate on the partition (110).

14. The integrated fresh air conditioning unit according to claim 13, characterized in that, The insulation cavity is equipped with an insulation board, which is a foam insulation board and / or a vacuum multilayer board; The inner wall of the heat insulation cavity is coated with a heat insulation coating.

15. The integrated fresh air conditioning unit according to claim 2, characterized in that, In the vertical direction, the evaporator (230) is located above the heat exchanger (330). A water collection tray (270) is also provided between the evaporator (230) and the heat exchanger (330) to collect the condensate generated after the fresh air flows through the evaporator (230). The water collection tray (270) is provided with a drain outlet (271), which is arranged opposite to the heat exchanger (330). The heat exchanger (330) has a first air duct formed along its air inlet direction, and the drain outlet (271) is located upwind of the heat exchanger (330) along the direction of the first air duct; for guiding the condensate in the water collection pan (270) toward the heat exchanger (330) and spraying it onto the heat exchanger (330).

16. The integrated fresh air conditioning unit according to claim 15, characterized in that, The fan (210) has a second air duct formed along its air intake direction, the evaporator (230) is disposed in the second air duct, and the drain outlet (271) is disposed downwind of the evaporator (230) along the direction of the second air duct. The drain outlet (271) is located at the intersection of the first direction and the second direction of the water collection plate (270), where the first direction is the axial direction of the first air duct and the second direction is the axial direction of the second air duct.

17. The integrated fresh air conditioning unit according to claim 2, characterized in that, The fresh air module (200) also includes a reheating component (280), which includes a reheating plate (281). The reheating plate (281) is disposed between the evaporator (230) and the fan (210) and is connected to the exhaust pipe of the compressor (310) through a pipeline. High-pressure hot air discharged by the compressor (310) is injected into the reheating plate (281) to heat the incoming air when the temperature of the evaporator (230) is too low or the fresh air volume is too small, resulting in the incoming air being too cold.

18. The integrated fresh air conditioning unit according to claim 17, characterized in that, The reheat plate (281) is disposed in the water collection pan (270), and a base (282) is provided at the bottom of the reheat plate (281), which is disposed in the water collection pan (270).

19. The integrated fresh air conditioning unit according to claim 4, characterized in that, The fresh air module (200) also includes a guide rail (290), which is disposed inside the housing structure. The filter (220) is slidably connected to the housing structure through the guide rail (290). An opening suitable for the filter (220) to slide out is provided on the side plate (250), and a detachable filter (220) cover plate is provided on the opening. The filter (220) slides out of the guide rail (290) toward the front panel (120) or rear panel (120) of the frame (100), and the front panel (120) is provided with a filter (220) replacement port that is compatible with the filter (220) cover plate.

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