Low-noise compact integral elevator air conditioner

Abstract

The invention discloses a low-noise compact integral elevator air conditioner which comprises a refrigeration module. The circulation module comprises a heat exchange medium circulation unit and a condensate water circulation unit, the heat exchange medium circulation unit and the refrigeration module are arranged in the vertical direction, the heat exchange medium circulation unit and the refrigeration module are connected through a pipeline to form a heat exchange circulation loop of a heat exchange medium, and the condensate water circulation unit is provided with a water collection part and a water distribution part; the water collecting part is used for receiving condensate water from the refrigeration module and the heat exchange medium circulating unit, the water distributing part is located above the heat exchange medium circulating unit, and the condensate water circulating unit is used for collecting and conveying the condensate water and applying the condensate water to the outer surface of the heat exchange medium circulating unit through the water distributing part.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and in particular to a low-noise, compact, integrated elevator air conditioner. Background Technology

[0002] As a crucial vertical transportation tool in modern high-rise buildings, the comfort of elevator passengers is receiving increasing attention. During elevator operation, the interior of the elevator car is prone to problems such as increased temperature, humidity, and poor air circulation due to dense crowds, equipment heat, and the relatively enclosed shaft. This is especially true in hot weather or under poorly ventilated conditions, causing passengers to experience stuffiness and discomfort. Therefore, installing a dedicated air conditioning system inside the elevator car has become an important technological direction for improving the passenger experience and enhancing equipment quality.

[0003] Among various types of elevator air conditioning, integrated air conditioning systems are gradually becoming the mainstream in the market due to their high degree of structural integration, the elimination of the need for a separate machine room, and relatively simple installation and maintenance. These devices typically integrate core components such as the compressor, condenser, evaporator, and fan into a single enclosed enclosure, which is then directly installed on the top of the elevator car.

[0004] However, currently common integrated elevator air conditioning systems still face several common technical problems that urgently need to be addressed in practical applications: First, due to considerations of heat exchange efficiency, axial or centrifugal fans are generally used, which operate at high speeds and cause significant airflow disturbances, resulting in substantial operating noise and directly affecting the quietness and comfort of the elevator car; Second, due to limited installation space, condensers often employ pure air-cooling, which is insufficient in heat dissipation under high-temperature conditions, easily leading to increased condensing pressure, increased compressor power consumption, and low system energy efficiency; Third, traditional layouts are mostly horizontally parallel structures, or vertically stacked systems still rely on large side ducts for air supply, resulting in a large horizontal projected area of ​​the equipment, severely occupying the limited installation and maintenance space at the top of the car, and causing difficulties in the layout and daily maintenance of lighting, ventilation, and other equipment; In addition, the condensate generated during the cooling process is usually discharged directly without being utilized, wasting water resources and missing the energy-saving potential of utilizing its latent heat of vaporization for auxiliary heat dissipation.

[0005] In existing technologies, relevant patent solutions attempt to improve upon the aforementioned problems. For example, Chinese patent CN115638480A discloses a compact elevator air conditioner, which achieves a compact layout between components by designing one side of the centrifugal fan impeller as a concave structure. However, this solution still uses a dual centrifugal fan drive, failing to substantially solve the problem of excessive operating noise; furthermore, its overall horizontal "through-type" layout results in a still relatively large length dimension, and the lack of an effective condensate recovery and utilization system means that condensate discharge issues persist. Another example is Chinese patent CN120720663A, which proposes a vertical elevator air conditioner using a stacked arrangement of the evaporator and condenser to reduce the equipment's footprint. However, this solution still uses a centrifugal fan connected to a large side-exhaust duct, failing to reduce operating noise, and the large duct continues to encroach on top space, limiting the compactness effect.

[0006] In summary, although existing integrated elevator air conditioning systems are relatively mature in terms of functional integration, they still have significant shortcomings in low-noise operation, compact structure, efficient heat dissipation, and condensate resource utilization. They are unable to simultaneously meet the comprehensive performance requirements of modern elevators for quiet comfort, space saving, energy efficiency, and convenient maintenance. Summary of the Invention

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a low-noise, compact, integrated elevator air conditioner, which achieves low-noise operation, compact installation, and high-efficiency cooling through innovative structural layout, fan selection, and condensate recycling system.

[0008] A low-noise, compact, integrated elevator air conditioner according to an embodiment of the present invention includes: Refrigeration module; The circulation module includes a heat exchange medium circulation unit and a condensate circulation unit. The heat exchange medium circulation unit and the refrigeration module are arranged vertically and connected by pipelines to form a heat exchange circulation loop for the heat exchange medium. The condensate circulation unit has a water collection section and a water distribution section. The water collection section is used to receive condensate from the refrigeration module and the heat exchange medium circulation unit respectively. The water distribution section is located above the heat exchange medium circulation unit. The condensate circulation unit is used to collect and transport condensate and apply condensate to the outer surface of the heat exchange medium circulation unit through the water distribution section.

[0009] According to an embodiment of the present invention, a low-noise, compact, integrated elevator air conditioner has at least the following beneficial effects: By integrating the refrigeration module and the heat exchange medium circulation unit vertically, this application effectively reduces the horizontal footprint of the equipment, making it more suitable for the space-constrained elevator car top installation environment. Furthermore, the condensate circulation unit converts the condensate generated during refrigeration and dehumidification into a cooling medium to aid heat dissipation. By applying this condensate to the surface of the heat exchange medium circulation unit, the heat dissipation effect is enhanced by utilizing the principle of heat absorption through water evaporation, forming a composite cooling mode combining air cooling and water cooling. This design effectively improves the system's energy efficiency ratio, reduces compressor power consumption, and properly handles the condensate discharge problem, achieving a comprehensive improvement in energy saving, space conservation, and resource utilization.

[0010] According to an embodiment of the present invention, a low-noise, compact, integrated elevator air conditioner has a heat exchange medium circulation unit located above the refrigeration module.

[0011] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner is provided, wherein the refrigeration module includes an evaporator and a first fan, and the first fan is disposed at the air inlet end or air outlet end of the evaporator; And / or, The heat exchange medium circulation unit includes a condenser and a second fan. The second fan is located on one side of the condenser and is used to supply air to the condenser or exhaust air from the condenser.

[0012] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner is provided, wherein the first fan is a cross-flow fan; And / or, The second fan is a cross-flow fan.

[0013] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner includes a water collection section comprising a first water collection component disposed below the refrigeration module and a second water collection component disposed below the heat exchange medium circulation unit, wherein the second water collection component is connected to the first water collection component via a pipeline.

[0014] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner includes a condensate circulation unit that further includes a lifting section. The first water collecting component is connected to the water distribution section via the lifting section, and the lifting section is used to transport the condensate in the first water collecting component to the water distribution section.

[0015] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner further includes a housing and a support frame. The support frame is disposed in the housing and divides the inner cavity of the housing into an upper cavity and a lower cavity. The first water collection component and the refrigeration module are disposed in the lower cavity, and the second water collection component, the water distribution part and the heat exchange medium circulation unit are all disposed in the upper cavity and fixedly connected to the support frame.

[0016] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner is provided at the bottom of the housing, and the water collection groove is configured as the first water collection component; And / or, The top of the support frame is provided with a water collection groove, which is configured as the second water collection component.

[0017] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner is provided, wherein the water distribution part is a water distribution trough, and the bottom of the water distribution trough is provided with a plurality of water outlet holes; or, The water distribution part is a water distribution pipe, and the pipe wall of the water distribution pipe has multiple water outlet holes; Alternatively, the water distribution section includes multiple water distribution pipes arranged along the width direction of the heat exchange medium circulation unit, and each water distribution pipe has multiple water outlet holes opened on its axial direction on its pipe wall. The distribution range of the water outlet holes in the width direction of the heat exchange medium circulation unit is not less than the width of the heat exchange medium circulation unit.

[0018] According to an embodiment of the present invention, a low-noise compact integrated elevator air conditioner has the bottoms of the first water collecting component, the second water collecting component, and the water distribution component all inclined so that the condensate inside can flow to their respective outlets under the action of gravity.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial structural view from a first perspective of a low-noise, compact, integrated elevator air conditioner according to an embodiment of the present invention. Figure 2 for Figure 1 Enlarged view of the image marked A; Figure 3This is a partial structural view from a second perspective of a low-noise, compact, integrated elevator air conditioner according to an embodiment of the present invention. Figure 4 This is an axonometric view of a low-noise, compact, integrated elevator air conditioner according to an embodiment of the present invention; Figure 5 This is the main control logic diagram for the elevator air conditioner in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: Refrigeration module 100; Evaporator 110; First fan 120; Compressor 130; Heat exchange medium circulation unit 200; condenser 210; second fan 220; Base 400; First bracket 410; First water collection component 420; Support frame 500; second bracket 510; second water collection component 520; Enhancement Department 600; Water distribution section 700; Cover part 800. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0024] In the description of the invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If the terms "first" and "second" are used, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0026] Reference Figures 1 to 4 This invention provides a low-noise, compact, integrated elevator air conditioner, including a refrigeration module 100 and a circulation module, including a heat exchange medium circulation unit 200 and a condensate circulation unit. The heat exchange medium circulation unit 200 and the refrigeration module 100 are arranged vertically and connected by pipes to form a heat exchange circulation loop for the heat exchange medium. The condensate circulation unit has a water collection section and a water distribution section 700. The water collection section is used to receive condensate from the refrigeration module 100 and the heat exchange medium circulation unit 200, respectively. The water distribution section 700 is located above the heat exchange medium circulation unit 200 and is used to collect and transport condensate, and apply the condensate to the outer surface of the heat exchange medium circulation unit 200 through the water distribution section 700.

[0027] Specifically, in this application, the elevator air conditioner is constructed as a highly integrated whole. The refrigeration module 100 is the cold source, responsible for absorbing heat from the elevator car, while the heat exchange medium circulation unit 200 is the heat sink, responsible for dissipating heat to the external environment. The two form a complete vapor compression refrigeration cycle through refrigerant piping and the compressor 130. Additionally, the condensate circulation unit actively collects condensate generated by the refrigeration module 100 (evaporator 110) during cooling and dehumidification, as well as any incompletely evaporated reclaimed water that may drip from the heat exchange medium circulation unit 200 (condenser 210). The collected condensate is then transported to the water distribution section 700 located above the heat exchange medium circulation unit 200. The water distribution section 700 evenly distributes and applies the condensate to the outer surface of the high-temperature heat exchange medium circulation unit 200 (i.e., the condenser 210).

[0028] Understandably, this application transforms the condensate that would otherwise need to be treated into a valuable cooling medium, achieving resource recycling. By applying the condensate to the high-temperature condenser 210, the heat dissipation capacity of the condenser 210 is enhanced by utilizing the principle of water evaporation absorbing latent heat, thus forming a composite cooling mode combining "active air cooling" and "evaporative cooling." This helps to reduce condensation temperature and pressure, improving the energy efficiency of the entire refrigeration system. Simultaneously, the overall vertical layout lays the structural foundation for the miniaturization and compactness of the equipment.

[0029] Specifically, as shown in the figure, the heat exchange medium circulation unit 200 is located above the refrigeration module 100. That is, in terms of physical layout, the heat exchange medium circulation unit 200, such as the condenser 210 and the second fan 220, which generate a large amount of heat, is arranged in the upper part of the equipment, while the refrigeration module 100, such as the evaporator 110 and the first fan 120, which generate cooling capacity, is arranged in the lower part. This "hot above, cold below" layout is in line with the physical law that hot air, which has a lower density, flows upward. During operation, the hot air drawn in from the car is cooled by the evaporator 110 below, increasing its density and naturally sinking back into the car, resulting in smooth airflow for cooling. At the same time, the airflow used to cool the condenser 210 enters from the top or side of the equipment driven by the fan, and becomes hot air after passing through the high-temperature condenser 210. Due to its thermal buoyancy, it can be more easily discharged upwards into the equipment or shaft. The layout provided in this application conforms to the natural convection trend, reduces the extra work consumed by the fan to counteract unreasonable airflow paths, not only helps to reduce system energy consumption, but also effectively avoids mutual interference between hot and cold airflows through short circuits, ensuring heat exchange efficiency.

[0030] Understandably, this application utilizes natural convection to enhance forced convection heat transfer, which helps reduce fan energy consumption and airflow noise. Simultaneously, the clearly defined upper and lower partitions provide clear spatial planning for internal electrical wiring and piping, improving equipment reliability and maintainability.

[0031] According to some embodiments of this application, as shown in the figures, the refrigeration module 100 includes an evaporator 110 and a first fan 120, with the first fan 120 disposed at the air inlet end of the evaporator 110. It is understood that in this configuration, the first fan 120 is installed as an induced draft fan on the side of the evaporator 110 facing the interior of the car (i.e., the air inlet end). When the fan starts, a negative pressure zone is formed in front of the evaporator 110, actively drawing warm air from the car and evenly distributing it through the fin gaps of the evaporator 110. After heat exchange with the low-temperature refrigerant, the air's temperature and humidity decrease, and it is then blown out by the fan and returned to the car via the air outlet or duct at the bottom of the device.

[0032] Alternatively, in some other embodiments, the first fan 120 is disposed at the air outlet end of the evaporator 110. It is understood that in this configuration, the first fan 120 is installed as a blower on the air outlet side (i.e., the air outlet end) after heat exchange in the evaporator 110. Car air flows naturally into and passes through the evaporator 110 under pressure differential and is cooled. The cooled air collects in the space between the evaporator 110 and the fan, and is then drawn in and pressurized by the fan, and delivered to the air supply duct connecting the car at a certain speed and pressure.

[0033] According to some embodiments of this application, as shown in the figures, the heat exchange medium circulation unit 200 includes a condenser 210 and a second fan 220. The second fan 220 is disposed on one side of the condenser 210 and is used to supply air toward the condenser 210. It is understood that in this configuration, the second fan 220 acts as a supply fan, with its front facing the condenser 210. During operation, it directly blows cooler ambient air toward the fins of the condenser 210. The airflow penetrates the dense fins, forcibly carrying away the heat released by the high-temperature refrigerant inside the condenser 210 tubes. The heated air is then discharged from the exhaust port on the other side or above the device.

[0034] Alternatively, in some other embodiments, the second fan 220 is used to exhaust air from the condenser 210. It is understood that in this configuration, the second fan 220 acts as an exhaust fan, located on the outlet side of the condenser 210 or in an area where hot air from the equipment converges. When the fan operates, it rapidly draws and exhausts the heated air that has passed through the condenser 210 from the equipment cavity. This creates a negative pressure around the condenser 210, causing external cold air to passively flow in from the air inlet and pass through the condenser 210.

[0035] Specifically, designers can select the most suitable fan arrangement mode (exhaust or supply air) based on the actual ventilation conditions of the elevator shaft, the quality of the internal air duct design, and specific noise control requirements. This flexibility ensures that better airflow organization and heat exchange effects can be achieved in different application scenarios, realizing a balance between versatility and performance.

[0036] Optionally, the first fan 120 is a cross-flow fan. The long, horizontally arranged impeller of the cross-flow fan provides a wide, uniform, and gentle airflow along its length. Furthermore, the second fan 220 is also a cross-flow fan, and when applied to the condenser 210 side, its uniform airflow ensures effective airflow coverage of the entire heat dissipation surface of the condenser 210, preventing localized overheating. Advantageously, the cross-flow fan's rotational speed is typically lower than that of centrifugal or axial fans with the same airflow, reducing aerodynamic noise (such as blade passing frequency noise and turbulence noise) and mechanical vibration noise at the noise source. The use of dual cross-flow fans allows the air conditioner to maintain a low noise level during operation, contributing to improved quiet comfort in the elevator car. Simultaneously, the uniform airflow also improves the uniformity and efficiency of heat exchange between the two units.

[0037] Preferably, when the cross-flow fan is applied to the evaporator 110 side, its outlet area should be designed to completely cover the air inlet of the evaporator 110 and the entire heat exchange area; similarly, when the cross-flow fan is applied to the condenser 210 side, the same coverage requirement must be met. This design consideration ensures that the uniform and stable airflow provided by the cross-flow fan can act on the entire effective surface area of ​​the heat exchanger without omission, thereby maximizing its low-noise and uniform air delivery characteristics, which is an important structural guarantee for achieving efficient and uniform heat exchange.

[0038] According to some embodiments of this application, as shown in the figure, the water collection section includes a first water collection element 420 disposed below the refrigeration module 100 and a second water collection element 520 disposed below the heat exchange medium circulation unit 200. The second water collection element 520 is connected to the first water collection element 420 through a pipeline.

[0039] Specifically, the first water collection unit 420 is located directly below the evaporator 110 and is specifically designed to collect the large amount of condensate generated during dehumidification of the evaporator 110. The second water collection unit 520 is located below the condenser 210 or the water distribution section 700 and is used to collect excess water that drips from the water distribution section 700 but fails to evaporate completely on the condenser 210, or the very small amount of condensation generated by the condenser 210 itself due to the low ambient temperature. The two are connected by a connecting pipe, allowing the water collected by the second water collection unit 520 to automatically flow back to the first water collection unit 420 by gravity.

[0040] Understandably, this application ensures water resource recovery by directing water droplets that may be scattered in different locations inside the equipment to a unified water storage point. At the same time, it reduces the risk of short circuits and corrosion caused by accidental dripping of condensate inside the equipment, realizes the collection of condensate along the entire path, and improves the reliability and service life of the equipment.

[0041] According to some embodiments of this application, as shown in the figure, the condensate circulation unit further includes a lifting section 600. The first water collecting element 420 and the water distribution section 700 are connected through the lifting section 600. The lifting section 600 is used to transport the condensate in the first water collecting element 420 to the water distribution section 700.

[0042] Specifically, a lift unit 600 (usually a miniature water pump) is added to the condensate circulation path. The water pump's inlet extends into the bottom of the first water collection unit 420 through a suction pipe with a filter screen, and the outlet is connected to the high-level water distribution unit 700 through a pipe.

[0043] Understandably, the lifting section 600 provides the circulation power, overcoming the gravitational potential energy barrier of condensate flowing from the lower water collection component to the higher water distribution section 700, thus enabling the active and controllable recycling of condensate. In some optional embodiments, the water pump can be intelligently controlled by a water level sensor to start and stop on demand, ensuring cooling effect while also saving energy.

[0044] According to some embodiments of this application, as shown in the figure, the elevator air conditioner also includes a housing and a support frame 500. The support frame 500 is disposed in the housing and divides the inner cavity of the housing into an upper cavity and a lower cavity. The first water collection component 420 and the refrigeration module 100 are disposed in the lower cavity, and the second water collection component 520, the water distribution part 700 and the heat exchange medium circulation unit 200 are all disposed in the upper cavity and fixedly connected to the support frame 500.

[0045] Specifically, the enclosure serves as the outer shell, providing protection and mounting interfaces. The support frame 500 is a robust metal frame fixed to the center of the enclosure, dividing its interior into two independent chambers. The lower chamber houses the "cold zone" components, while the upper chamber houses the "hot zone" components. Simultaneously, the support frame 500 itself serves as the mounting base for all components in the upper chamber. This design offers several advantages: First, it achieves strict hot and cold zone separation, preventing mutual interference between airflow and heat. Second, the modular design facilitates assembly and maintenance. Third, the robust support frame 500 enhances the overall structural rigidity, effectively suppressing vibrations generated during fan and compressor 130 operation, thus positively impacting the reduction of solid-borne noise.

[0046] In some embodiments, a water collection groove is provided at the bottom of the tank, which is configured as a first water collection component 420. It is understood that the first water collection component 420 is integrated with the bottom plate of the tank, and a large recessed area is formed at the bottom of the tank through molding or sheet metal forming to serve as the water collection groove. Further, a water collection groove is provided at the top of the support frame 500, which is configured as a second water collection component 520. It is understood that the second water collection component 520 is integrated with the top plate of the support frame 500, and the top plate of the support frame 500 itself has a shallow groove structure to collect water droplets. Advantageously, the integrated design eliminates the need for a separate water tray, reducing assembly steps and lowering costs. At the same time, it avoids the potential leakage risks caused by installation gaps in a separate water tray, resulting in higher structural strength, better sealing, and achieving a unity of function and structure.

[0047] Of course, in some other embodiments, the water tray component can also be used as the first water collection component 420 and the second water collection component 520.

[0048] Furthermore, the housing is composed of a base 400 and a cover 800, which together form a sealed mounting cavity. A first bracket 410 for mounting the first fan 120 is formed on the base 400, while a corresponding second bracket 510 for mounting the second fan 220 is formed on the support frame 500. The first bracket 410 and the base 400 are manufactured using an integral injection molding process, as are the second bracket 510 and the support frame 500. This highly integrated structural design not only reduces the number of parts and assembly steps, lowering manufacturing costs, but more importantly, by eliminating potential loosening or stress concentration points caused by traditional bolted connections or welding, it significantly improves the overall structural rigidity and stability, further enhancing the equipment's vibration resistance and noise reduction capabilities. It also makes the internal layout more organized, facilitating modular, rapid assembly and maintenance.

[0049] In addition, a first air inlet, a first air outlet, and a second air outlet are correspondingly provided on the cover 800. The first air inlet is located on the same side as the air inlet of the first fan 120 inside the housing, ensuring efficient intake of return air from the car. The first air outlet is located on the same side as the air outlet of the evaporator 110, allowing cooled air to be smoothly discharged into the car. The second air outlet is located on the same side as the air outlet of the second fan 220, so that hot air generated by the condenser 210 is directly directed to the external environment. This one-to-one correspondence air outlet layout design in this embodiment optimizes the airflow path, reduces internal wind resistance and turbulence, and while ensuring heat exchange efficiency, further reduces wind noise caused by airflow deflection or conflict.

[0050] According to some embodiments of this application, the water distribution section 700 is a water distribution trough, with multiple water outlet holes at the bottom. In this design, the water distribution section 700 of this application adopts a trough-type water distributor. It is a long, narrow trough that runs horizontally above the condenser 210, with densely packed small water outlet holes drilled at the bottom. Condensate is pumped into the trough, and after the water level overflows the water outlet holes, it forms uniform drips under the action of gravity. To ensure that the condensate can cover the entire heat dissipation surface of the condenser 210, the length of the water distribution trough and the distribution range of its bottom water outlet holes are designed to be at least equal to the width of the condenser 210. In this way, the condensate dripping from the water distribution trough can be evenly distributed across the entire width of the condenser 210 fins, resulting in a simple structure, reliable operation, and low noise. The water flow is mainly dripping, gentle and uniform, with low requirements for water quality, and the trough itself has a certain water storage and buffering capacity, ensuring stable water distribution. By ensuring that the distribution range of the water outlet covers the width of the condenser 210, the cooling effect is uniform, avoiding poor local heat dissipation.

[0051] Alternatively, in some other embodiments, the water distribution section 700 is a water distribution pipe with multiple water outlet holes on its wall. In this embodiment, the water distribution section 700 of this application adopts a single-pipe water distributor. It is a pipe closed at both ends, usually arranged along the width direction of the condenser 210, with a drain hole drilled along its length at the bottom of the pipe wall. A water pump provides a certain pressure, causing water to be sprayed out from the hole in a thin stream. In order to effectively cover the heat dissipation surface of the condenser 210, the distribution range of the water outlet holes on the water distribution pipe along the length of the pipe, that is, its effective water distribution width, is designed to be no less than the width of the condenser 210. This means that regardless of whether the pipe is arranged in a straight line or has a certain curvature, the projection area corresponding to its water outlet holes must completely cover the width of the condenser 210. In this embodiment, the water distribution is more active and has a certain impact force, which helps the water to spread and atomize on the fins of the condenser 210. The initial effect of evaporative cooling may be faster. Furthermore, by controlling the length of the water distribution pipe and the distribution of the water outlet holes, it can be ensured that the condensate can act on most of the area of ​​the condenser 210.

[0052] Alternatively, in some other embodiments, the water distribution section 700 includes multiple water distribution pipes arranged along the width direction of the condenser 210, and each water distribution pipe has multiple water outlet holes opened along its axial direction on its pipe wall. In this scheme, the water distribution section 700 of this application adopts a distributed multi-pipe water distributor. It is composed of multiple shorter water distribution pipes arranged side by side, which together cover the entire width of the condenser 210. Each pipe has an independent opening for water distribution. The overall distribution range of the water outlet holes on all water distribution pipes in the width direction of the condenser 210 (i.e., the distance from the leftmost water outlet hole to the rightmost water outlet hole) should not be less than the width of the condenser 210. The water distribution coverage range requirement is achieved by reasonably arranging the spacing of each water distribution pipe and the opening length of each pipe. This embodiment has good water distribution uniformity and high redundancy. Even if individual water outlet holes are blocked, the impact on the overall water distribution uniformity is small, and the system reliability is strong. It can ensure that the condensate covers a large area of ​​heat dissipation fins, thereby obtaining a better evaporative cooling effect and energy efficiency improvement. The multi-tube design is suitable for the wide-range condenser 210, which can provide a more uniform water distribution without dead zones.

[0053] Furthermore, the bottoms of the first water collecting component 420, the second water collecting component 520, and the water distribution section 700 are all inclined so that the condensate inside can flow to their respective discharge ports under the action of gravity. Specifically, the bottom surfaces of the first and second water collecting components 520 are sloped towards their drain pipe interfaces. When the water distribution section 700 uses a water distribution trough, the bottom of the trough has a slope along its length; and when the water distribution section 700 uses a water distribution pipe, the water distribution pipe is also installed with a certain inclination.

[0054] Understandably, the tilted design ensures that no stagnant water accumulates in the container, and the pump can draw up almost all the water. When the system is shut down, all residual water in the pipes and containers can be drained by gravity, which helps prevent bacteria from growing in stagnant water, producing odors, or freezing and damaging equipment in cold seasons. This reduces maintenance needs, improves the hygiene and reliability of the system in long-term operation, and achieves "self-draining" and "self-cleaning".

[0055] In other embodiments, a control method executed by the elevator air conditioner of this application is also provided, specifically including the following steps: S101: Start the refrigeration cycle. Control the compressor 130 to run, driving the heat exchange medium to circulate in the heat exchange loop formed by the refrigeration module 100 and the heat exchange medium circulation unit 200 through pipelines, realizing the basic refrigeration process of the refrigeration module 100 absorbing heat and the heat exchange medium circulation unit 200 releasing heat.

[0056] S102: Start condensate collection and circulation. Control the condensate circulation unit to operate, receiving and collecting condensate generated during heat exchange from the refrigeration module 100 and the heat exchange medium circulation unit 200 through its collection section. Subsequently, the collected condensate is transported to the water distribution section 700 located above the heat exchange medium circulation unit 200.

[0057] S103: Perform condensate-assisted heat dissipation. Control the water distribution unit 700 to uniformly apply the received condensate to the outer surface of the heat exchange medium circulation unit 200. Utilize the heat absorption effect of condensate evaporation on the high-temperature surface to assist and enhance the heat dissipation capacity of the heat exchange medium circulation unit 200, forming a composite cooling mode that combines air cooling and water cooling.

[0058] In some embodiments, in steps S101 and S103, the control logic is optimized based on the physical layout where "the heat exchange medium circulation unit 200 is located above the refrigeration module 100". Specifically, this includes: S201: Prioritize starting or adjusting the power of the heat dissipation components (such as the second fan 220) of the heat exchange medium circulation unit 200 located above, and take advantage of the natural upward trend of hot air to promote the smooth discharge of heat dissipation airflow.

[0059] S202: Monitors the temperature gradient between the upper and lower cavities and dynamically adjusts the operating parameters of the refrigeration module 100 and the heat exchange medium circulation unit 200 according to the gradient changes, so that the system operating point conforms to the natural convection law and reduces the energy consumption of the fan in resisting airflow organization.

[0060] In some embodiments, the control modes of the wind turbine include: S301: When the first fan 120 is installed at the air inlet of the evaporator 110, it is controlled to operate as an induced draft fan to guide the car air through the evaporator 110 in a negative pressure suction manner.

[0061] S302: When the first fan 120 is installed at the air outlet of the evaporator 110, it is controlled to operate as a blower to deliver the air cooled by the evaporator 110 into the car air duct in a positive pressure delivery manner.

[0062] S303: When the second fan 220 is used to supply air toward the condenser 210, it is controlled to operate as a supply fan to force the outside air toward the condenser 210.

[0063] S304: When the second fan 220 is used to exhaust air from the condenser 210, it is controlled to operate as an exhaust fan to extract the hot air around the condenser 210.

[0064] The control system can select or combine different modes of S301 / S302 and S303 / S304 according to preset strategies or sensor feedback to adapt to different installation environments and heat dissipation requirements.

[0065] In some embodiments, when the first fan 120 and / or the second fan 220 are cross-flow fans, the control method includes: S401: Controls the cross-flow fan to operate at a constant or variable speed below the rated maximum speed, giving priority to its large air volume and low speed characteristics to meet basic air volume requirements, and suppressing high-frequency noise from the source.

[0066] S402: By adjusting the input voltage or PWM signal of the cross-flow fan, stepless or segmented speed regulation can be achieved to keep the airflow uniform and stable, ensuring that the entire heat exchange area of ​​the evaporator 110 or condenser 210 is covered.

[0067] In some embodiments, control of condensate collection includes: S501: Monitor the water level or water accumulation time of the first water collection unit 420 (located below the cooling module 100) by means of a liquid level sensor or timer.

[0068] S502: When the water level of the first water collection unit 420 reaches the predetermined threshold or the water accumulation time reaches the set value, it is determined to be the main condensate collection stage.

[0069] S503: By default, the water collected by the second water collection unit 520 (located below the heat exchange medium circulation unit 200) will automatically flow back to the first water collection unit 420 by gravity through the connecting pipe, or the pipe can be kept clear by intermittently starting a small power.

[0070] In some embodiments, control of condensate delivery includes: S601: When the water level of the first water collector 420 reaches the lifting start water level H-high, the control lifting unit 600 (water pump) is started to pump the condensate from the first water collector 420 to the water distribution unit 700.

[0071] S602: When the water level of the first water collection unit 420 drops to the lifting stop water level H-low, the lifting unit 600 is controlled to stop working.

[0072] S603: Monitors the operating current or pressure of the lifting section 600 for fault diagnosis (such as idling, blockage).

[0073] In some embodiments, the overall machine operation and coordination control includes: S701: After the system is powered on and initialized, the control units of the refrigeration module 100 (including the first fan 120 and the compressor 130) located in the lower cavity and the heat exchange medium circulation unit 200 (including the second fan 220) located in the upper cavity are identified and initialized respectively.

[0074] S702: During operation, the temperature of the upper and lower cavities is independently monitored and used as one of the parameters to coordinate the operation intensity of the refrigeration module 100 and the heat exchange medium circulation unit 200, so as to prevent cold and heat interference.

[0075] S703: Collects vibration signals from the support frame 500 or the housing. When the vibration amplitude exceeds the allowable threshold, it automatically reduces the operating power of the compressor 130 or the fan to suppress solid-borne noise.

[0076] In some embodiments, control optimization for the integrated water collection structure includes: S801: Since the first water collection component 420 is integrally formed with the bottom of the tank, its water level monitoring sensor needs to be pre-calibrated to match the nonlinear relationship between liquid level and volume caused by the shape of the groove.

[0077] S802: For the second water collection component 520, which is integrally formed on the top of the support frame 500, the control logic can be simplified to mainly rely on its gravity return to the first water collection component 420, without the need to set up a separate complex water level control.

[0078] In some embodiments, the water distribution control strategy varies depending on the structure of the water distribution unit 700: S901a: The control lift unit 600 supplies water to the water distribution tank until the water level in the tank is sufficient to drip naturally from all the water outlets. By controlling the water supply flow rate, the dripping rate is matched with the heat dissipation requirements of the condenser 210.

[0079] Alternatively, S901b: The control lifting unit 600 provides a certain water pressure, causing water to spray out in a thin line from the water outlet holes on the water distribution pipe wall. The intensity and coverage of the water spray are controlled by adjusting the water pressure.

[0080] Alternatively, S901c: The control lift unit 600 supplies water to the parallel multi-distribution water pipes. Through pressure equalization design or independent valve adjustment, it ensures that the water output of each pipe is uniform and together meets the full width coverage requirements of the condenser 210.

[0081] Regardless of the water distribution section 700 structure adopted, the goal of the control system is to ensure that the physical design of "the distribution range of the water outlet holes in the width direction of the condenser 210 is not less than the width of the condenser 210" is effectively realized. That is, through water flow control, the actual wetting area of ​​the condensate water covers the core heat dissipation area of ​​the condenser 210.

[0082] In some embodiments, system evacuation and anti-fouling control includes: S1001: At the end of each refrigeration cycle or when the system is shut down, a purging procedure is executed. The control lift unit 600 stops working, and the residual condensate flows completely to the drain port under gravity, relying on the inclined structure at the bottom of the first water collection unit 420, the second water collection unit 520, and the water distribution unit 700.

[0083] S1002: When the system is shut down for a long time or a low temperature environment warning is activated, the evacuation procedure is forcibly started to ensure that there is no liquid water residue in the system and to prevent freezing.

[0084] S1003: Record the total amount of condensate circulation periodically (e.g., after a certain period of cumulative operation). If it is significantly lower than the historical average or theoretical value, it indicates that there may be blockage of the 700 water outlet of the water distribution section or poor pipe flow, and maintenance is required.

[0085] The control method provided in this application closely revolves around the structural features of the elevator air conditioner. Through layered and zoned refined control, it realizes intelligent management of functions such as refrigeration cycle, condensate collection and utilization, fan operation, vibration suppression, and system self-maintenance. It fully leverages the technical advantages of the elevator air conditioner's compact and low-noise structure, and further improves energy efficiency, reliability, and user experience through active control strategies.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0087] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A low-noise, compact, integrated elevator air conditioner, characterized in that, include: Refrigeration module (100); The circulation module includes a heat exchange medium circulation unit (200) and a condensate circulation unit. The heat exchange medium circulation unit (200) and the refrigeration module (100) are arranged vertically. The heat exchange medium circulation unit (200) and the refrigeration module (100) are connected by pipelines to form a heat exchange circulation loop of the heat exchange medium. The condensate circulation unit has a water collection part and a water distribution part (700). The water collection part is used to receive condensate from the refrigeration module (100) and the heat exchange medium circulation unit (200) respectively. The water distribution part (700) is located above the heat exchange medium circulation unit (200). The condensate circulation unit is used to collect and transport condensate, and apply condensate to the outer surface of the heat exchange medium circulation unit (200) through the water distribution part (700).

2. The low-noise, compact, integrated elevator air conditioner according to claim 1, characterized in that, The heat exchange medium circulation unit (200) is located above the refrigeration module (100).

3. The low-noise, compact, integrated elevator air conditioner according to claim 2, characterized in that, The refrigeration module (100) includes an evaporator (110) and a first fan (120), wherein the first fan (120) is disposed at the air inlet or air outlet of the evaporator (110); And / or, The heat exchange medium circulation unit (200) includes a condenser (210) and a second fan (220). The second fan (220) is disposed on one side of the condenser (210) and is used to supply air toward the condenser (210) or exhaust air from the condenser (210).

4. A low-noise, compact, integrated elevator air conditioner according to claim 3, characterized in that, The first fan (120) is a cross-flow fan; And / or, The second fan (220) is a cross-flow fan.

5. A low-noise, compact, integrated elevator air conditioner according to claim 1, characterized in that, The water collection section includes a first water collection component (420) disposed below the refrigeration module (100) and a second water collection component (520) disposed below the heat exchange medium circulation unit (200). The second water collection component (520) is connected to the first water collection component (420) through a pipeline.

6. A low-noise, compact, integrated elevator air conditioner according to claim 5, characterized in that, The condensate circulation unit further includes a lifting section (600), the first water collecting component (420) and the water distribution section (700) are connected through the lifting section (600), and the lifting section (600) is used to transport the condensate in the first water collecting component (420) to the water distribution section (700).

7. A low-noise, compact, integrated elevator air conditioner according to claim 6, characterized in that, It also includes a housing and a support frame (500). The support frame (500) is disposed in the housing and divides the inner cavity of the housing into an upper cavity and a lower cavity. The first water collection component (420) and the refrigeration module (100) are disposed in the lower cavity. The second water collection component (520), the water distribution part (700) and the heat exchange medium circulation unit (200) are all disposed in the upper cavity and fixedly connected to the support frame (500).

8. A low-noise, compact, integrated elevator air conditioner according to claim 7, characterized in that, The bottom of the box is provided with a water collection groove, which is configured as the first water collection component (420). And / or, The support frame (500) is provided with a water collection groove on its top, and the water collection groove is configured as the second water collection component (520).

9. A low-noise, compact, integrated elevator air conditioner according to claim 8, characterized in that, The water distribution section (700) is a water distribution trough, and the bottom of the water distribution trough is provided with multiple water outlet holes; or, The water distribution part (700) is a water distribution pipe, and the pipe wall of the water distribution pipe is provided with multiple water outlet holes; or, The water distribution section (700) includes a plurality of water distribution pipes arranged along the width direction of the heat exchange medium circulation unit (200), and each water distribution pipe has a plurality of water outlet holes opened on its axial direction. The distribution range of the water outlet holes in the width direction of the heat exchange medium circulation unit (200) is not less than the width of the heat exchange medium circulation unit (200).

10. A low-noise, compact, integrated elevator air conditioner according to claim 9, characterized in that, The bottoms of the first water collecting component (420), the second water collecting component (520), and the water distribution part (700) are all inclined so that the condensate inside can flow to their respective outlets under the action of gravity.

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