Combined condenser and air conditioner

Abstract

The present disclosure provides a combined condenser and air conditioner. The combined condenser comprises a shell, a centrifugal fan, a spraying system, a combined condensing core and a spraying water pump. The spraying water pump is configured to deliver cooling water in a water collecting tank at a lower part of the shell to the spraying system at an upper area in the shell, the spraying system is used to spray the cooling water to the combined condensing core below to complete the condensation of refrigerant. The centrifugal fan is configured to exhaust air through the top of the shell and form a negative pressure in the shell to accelerate the exhaust of the wet and hot air around the combined condensing core. The combined condensing core comprises single-plate heat exchangers arranged in multiple columns along a first direction. Each single-plate heat exchanger comprises multiple condensing tubes arranged horizontally from top to bottom. The outer wall of each condensing tube is spaced apart from multiple fins along the respective axial direction. The condensing tube conducts heat to the fins through the outer wall to increase the heat dissipation area through the fins.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and more particularly to a combined condenser and an air conditioner. Background Technology

[0002] In the field of cooling equipment, evaporative coolers, as a new type of cooling device, organically combine the advantages of spray-type tube coolers and circulating cooling towers. They adopt a counter-flow structure and are mainly composed of components such as a fan, housing, water receiving pan, cooling heat exchange tube assembly, steel frame, air vents, circulating water pump, and float valve. This cooler features a large heat exchange area in its cooling tubes, low system resistance, a compact overall structure, and a small footprint. Furthermore, its modular design allows for independent unit operation, and the number of units can be increased or adjusted according to the system's production capacity. With these significant advantages, evaporative coolers are increasingly favored in commercial applications with limited space.

[0003] However, traditional evaporative condensing chillers have certain limitations in use. They can perform well in cooling when the ambient temperature is high, but they cannot fully utilize the low ambient temperature to serve the unit when the ambient temperature is low, resulting in increased power consumption. Therefore, there is still room for improvement in the performance of traditional evaporative condensing chillers.

[0004] Meanwhile, air-cooled condensers, another common type of cooling equipment, use air as the cooling medium. A fan forces airflow, carrying away the heat from the refrigerant and thus achieving condensation. They are characterized by their simple structure, flexible use, and lack of water source limitations, making them widely applicable and adaptable to various environments.

[0005] In summary, evaporative coolers and air-cooled condensers each have their unique advantages. Combining the two and fully leveraging their respective strengths could undoubtedly create a new, higher-performance condenser. However, current technologies suffer from relatively low heat dissipation efficiency for both evaporative cooling and air-cooled condensers, limiting further improvements in cooling equipment performance. Summary of the Invention

[0006] In view of this, in order to solve the technical problem that the heat dissipation efficiency of evaporative cooling and air-cooled condensers in the prior art is relatively low, this disclosure provides a combined condenser and air conditioner.

[0007] According to a first aspect of the present disclosure, a combined condenser is provided, the combined condenser including a shell, and inside the shell, from top to bottom, a centrifugal fan, a spray system, a combined condensing core, packing material, and a water receiving tray are arranged; the centrifugal fan is located at the top of the shell; the spray system is located in the upper region inside the shell; the combined condensing core is located in the middle region inside the shell; and a spray water pump is arranged next to the water receiving tray, both the water receiving tray and the spray water pump being located in the lower region inside the shell.

[0008] The spray pump is configured to deliver cooling water from the water collection tank at the bottom of the housing to the spray system located in the upper region inside the housing. The spray system is used to spray cooling water onto the combined condenser core located below it to complete refrigerant condensation. The centrifugal fan is configured to exhaust air through the top of the housing and create a negative pressure inside the housing to accelerate the discharge of hot and humid air around the combined condenser core.

[0009] High-temperature water flows to the packing material, which is used to disperse heat and filter impurities. Low-temperature water flows to the water receiving tray, which is used to collect the low-temperature water. The spray pump in the spray system is used to pump the water from the water receiving tray back to the spray system.

[0010] The combined condenser core includes multiple single-plate heat exchangers arranged in multiple rows along a first direction. Each single-plate heat exchanger includes multiple condenser tubes arranged horizontally from top to bottom. The outer wall of each condenser tube has multiple fins spaced apart along its respective axial direction. The condenser tubes conduct heat to the fins through their outer walls to increase the heat dissipation area through the fins.

[0011] In one alternative implementation,

[0012] In each of the single-piece heat exchangers, the tail of the upper condenser tube is connected to the head of the lower condenser tube to form a serpentine connecting pipe that runs from top to bottom. The wall of the uppermost condenser tube in the serpentine connecting pipe is connected to an air inlet, and the wall of the lowermost condenser tube in the serpentine connecting pipe is connected to a liquid outlet.

[0013] In one alternative implementation,

[0014] The combined condenser core includes an upper manifold and a lower manifold located laterally on each of the single-piece heat exchangers; at least a portion of the upper manifold is used to communicate with the wall of the uppermost condenser tube, and at least another portion of the upper manifold is used to communicate with the air inlet; at least a portion of the lower manifold is used to communicate with the wall of the lowermost condenser tube, and at least another portion of the lower manifold is used to communicate with the liquid outlet.

[0015] In one alternative implementation,

[0016] Each fin on the outer wall of the upper condenser tube and the corresponding fin on the outer wall of the lower condenser tube together form an extended facade.

[0017] In one alternative implementation,

[0018] Each fin on the outer wall of the upper condenser tube and the corresponding fin on the outer wall of the lower condenser tube are joined together to form an extended facade.

[0019] In one alternative implementation,

[0020] Each of the aforementioned fins is inserted into the outer wall of each of the aforementioned condenser tubes.

[0021] In one alternative implementation,

[0022] Each of the aforementioned fins is welded to the outer wall of each of the aforementioned condenser tubes.

[0023] In one alternative implementation,

[0024] The upper manifold and the uppermost condenser are connected by a metal heat-conducting sleeve, and the lower manifold and the lowermost condenser are connected by a metal heat-conducting sleeve. One end of the metal heat-conducting sleeve is fitted onto the outside of the condenser wall and welded to the wall, while the other end is inserted into the inside of each manifold and fits tightly against the inner wall of each manifold.

[0025] In one alternative implementation,

[0026] The inner wall of the metal heat-conducting sleeve is provided with heat-conducting protrusions extending along its axial direction. The heat-conducting protrusions abut against the wall of the condenser tube. The outer wall of the metal heat-conducting sleeve is provided with multiple heat-conducting fins, which are arranged at intervals along the circumference of the metal heat-conducting sleeve. The metal heat-conducting sleeve is configured to enhance the heat conduction from the condenser tube wall to the metal heat-conducting sleeve through the heat-conducting protrusions, and then conduct the heat to the refrigerant in each manifold or the surrounding cooling environment through the heat-conducting fins.

[0027] In one alternative implementation,

[0028] The combined condenser includes a water treatment device, which includes a high-frequency electromagnetic generator and a magnetic coil extending from the high-frequency electromagnetic generator. The magnetic coil is wound around the outer wall of the spray pipe, and the high-frequency electromagnetic generator is installed on a support next to the spray water pump.

[0029] This disclosure also provides an air conditioner including the aforementioned combined condenser.

[0030] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: In this disclosure, the centrifugal fan, spray system, combined condenser core, and spray water pump form a highly efficient functional synergy through a reasonable layered layout: the spray water pump and spray system ensure the circulating supply and precise spraying of cooling water, the combined condenser core increases the heat dissipation area through the structure of the heat transfer fins of the condenser tubes, and the centrifugal fan accelerates the discharge of hot and humid air through negative pressure. The three together achieve rapid condensation of refrigerant and efficient heat dissipation of equipment; at the same time, the design of multiple rows of single-plate heat exchangers improves space utilization, and the circulating use of cooling water reduces energy consumption, thus significantly improving the heat exchange efficiency and operating economy of the condenser.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0035] Figure 1 This is a schematic diagram of the axial structure of a combined condenser according to an exemplary embodiment;

[0036] Figure 2 This is a schematic diagram of the refrigerant flow path in a combined condenser core of a combined condenser, according to an exemplary embodiment.

[0037] Figure 3 This is a schematic diagram of a single condenser with fins on its outer wall, according to an exemplary embodiment.

[0038] Figure 4 This is a schematic diagram of the axial structure of a combined condenser core according to an exemplary embodiment;

[0039] Figure 5 This is a schematic diagram of a combined condenser according to an exemplary embodiment.

[0040] in:

[0041] 1. Outer shell; 2. Centrifugal fan; 3. Spray system; 4. Combined condenser core; 41. Single-piece heat exchanger; 411. Condenser tube; 412. Fin; 42. Upper manifold; 43. Lower manifold; 5. Spray water pump; 6. Air inlet; 7. Liquid outlet; 8. Condensation module; 81. Combined condenser; 9. Oil separator; 10. Compressor; 11. Evaporator. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] The following disclosure provides numerous different embodiments or examples for implementing various aspects of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0044] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, inside, outside, inner side, outer side, below, below, above, front, back, etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly; for example, an element described as being below or under other elements or features will subsequently be oriented above or above other elements or features. Therefore, the example term "below" can include orientations of "above" and "below". The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in this text will be interpreted accordingly.

[0045] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0046] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0047] To address the technical problem that evaporative cooling and air-cooled condensers cannot be combined in the prior art, this disclosure provides an air conditioner that can combine the heat exchange tubes of an evaporative cooling condenser with the fins of an air-cooled condenser to form a novel finned heat exchange tube structure.

[0048] Through structural layout, the spray system, including the fan, combined evaporative and air-cooled condenser core, packing, drip tray, and water pump, is highly integrated into one unit. This design is aesthetically pleasing, reduces pressure loss in the water system, improves the efficiency of the water pump and unit, and minimizes space occupation. Furthermore, the combination of air-cooled and evaporative condensers allows for automatic switching of cooling modes based on ambient temperature. When outdoor air temperature is low, water spraying can be stopped, operating in dry mode or switching to air-cooled condensation mode, maximizing the use of the air cooling source and reducing system energy consumption. This achieves both ultra-low temperature environment cooling and year-round cooling, as well as energy and water conservation.

[0049] It should be noted that evaporative condenser modules cannot utilize low ambient temperatures, or they cannot perform ultra-low temperature cooling or year-round cooling. Air-cooled condensers, on the other hand, can naturally utilize low ambient temperatures. Therefore, by integrating an air-cooled condenser into an evaporative condenser, it is also possible to utilize low ambient temperatures. Furthermore, by compactly arranging and rationally laying out the components of the evaporative condenser module, exposed components can be avoided, thus addressing the issue of low condenser integration.

[0050] In this disclosure, references Figures 1-5This disclosure provides a combined condenser 81, comprising: a housing 1, inside which a centrifugal fan 2, a spray system 3, a combined condenser core 4, packing material, and a water collection tray are arranged from top to bottom; the centrifugal fan 2 is located at the top of the housing 1; the spray system 3 is located in the upper region of the housing 1; the combined condenser core 4 is located in the middle region of the housing 1; and a spray water pump 5 is arranged next to the water collection tray, with both the water collection tray and the spray water pump 5 located in the lower region of the housing 1.

[0051] The spray pump 5 is configured to deliver cooling water from the water collection tank at the bottom of the housing 1 to the spray system 3 located in the upper part of the housing 1. The spray system 3 is used to spray cooling water onto the combined condenser core 4 located below it to complete the refrigerant condensation. The centrifugal fan 2 is configured to exhaust air through the top of the housing 1 and create a negative pressure inside the housing 1 so that the hot and humid air around the combined condenser core 4 can be discharged more quickly.

[0052] High-temperature water flows to the packing material, which is used to disperse heat and filter impurities. Low-temperature water flows to the water receiving tray, which is used to collect the low-temperature water. The spray pump 5 in the spray system 3 is used to pump the water from the water receiving tray back to the spray system 3.

[0053] The combined condenser core 4 includes multiple single-plate heat exchangers 41 arranged in multiple rows along a first direction. Each single-plate heat exchanger 41 includes multiple condenser tubes 411 arranged horizontally from top to bottom. The outer wall of each condenser tube 411 is provided with multiple fins 412 spaced apart along its respective axial direction. The condenser tubes 411 conduct heat to the fins 412 through their outer walls to increase the heat dissipation area through the fins 412.

[0054] For example, the first direction can be understood as the thickness direction of the monolithic heat exchanger 41.

[0055] In this way, through a reasonable layered layout, the centrifugal fan 2, spray system 3, combined condenser core 4, and spray pump 5 form a highly efficient synergistic function: the spray pump 5 and spray system 3 ensure the circulating supply and precise spraying of cooling water; the combined condenser core 4 increases the heat dissipation area through the structure of the heat transfer tubes 411 and fins 412; and the centrifugal fan 2 accelerates the discharge of hot and humid air through negative pressure. Together, these three components achieve rapid refrigerant condensation and efficient heat dissipation of the equipment. Simultaneously, the design of multiple rows of single-plate heat exchangers 41 improves space utilization, and the circulating use of cooling water reduces energy consumption, significantly improving the overall heat exchange efficiency and operational economy of the condenser. The evaporative cooling heat exchange in this embodiment not only utilizes evaporative cooling heat exchange at the packing but can also further utilize evaporative cooling heat exchange at the condenser. Therefore, the spray system 3 sprays water onto the heat exchange tubes of the combined heat exchanger at the top to form a water film, thereby further promoting evaporation and condensation.

[0056] Specifically, the combined condenser 81 according to the embodiments of this disclosure achieves multi-dimensional technical advantages through a layered layout and functional synergy structural design: First, the outer shell 1 serves as the main supporting structure, with the centrifugal fan 2, spray system 3, combined condenser core 4, and spray water pump 5 respectively arranged in the top, upper inner, middle inner, and lower inner areas, forming a top-down functional connection path to avoid spatial interference between components and provide a reasonable channel for airflow and cooling water circulation; Second, the spray water pump 5 accurately delivers the cooling water in the lower water collection tank of the outer shell 1 to the spray system 3 in the upper inner area, and the spray system 3 sprays cooling water directionally onto the combined condenser core 4 in the middle, so that the cooling water... The heat is directly applied to the surfaces of the condenser tubes 411 and fins 412. In the combined condenser core 4, the condenser tubes 411 conduct heat from the refrigerant to the spaced fins 412 through the outer wall. The fins 412 significantly increase the heat dissipation area, allowing for more thorough heat exchange between the cooling water and the fins 412 and condenser tubes 411, thus accelerating refrigerant condensation. At the same time, the centrifugal fan 2 at the top creates a negative pressure inside the outer casing 1 through exhaust, quickly drawing away the humid and hot air generated by the evaporation of cooling water around the combined condenser core 4. This prevents the accumulation of humid and hot air from causing a decrease in heat exchange efficiency. It can also draw in dry and cold air from the lower part or side of the outer casing 1, continuously providing a low-temperature heat exchange environment for the condenser core and further enhancing the cooling effect. Thirdly, the combined condenser core 4 adopts a structure in which multiple rows of single-plate heat exchangers 41 are arranged along the first direction. Combined with the design of multiple horizontally arranged condenser tubes 411 in each heat exchanger, it not only increases the heat exchange area per unit space, but also facilitates the uniform flow of refrigerant in the condenser tubes 411. Combined with the heat dissipation enhancement effect of the fins 412, it ultimately achieves a dual improvement in the efficient condensation of refrigerant and the overall heat dissipation efficiency of the equipment. At the same time, the cooling water can be recovered through the water collection tank and circulated by the spray water pump 5 to reduce water consumption.

[0057] It should be noted that the centrifugal fan 2 at the top directly acts on the airflow inside the outer casing 1, eliminating the need for additional air ducts; the combined condenser core 4 in the middle corresponds vertically with the upper spray system 3, ensuring precise coverage of the core by the spray water; the lower packing, water receiving tray, and spray water pump 5 form a short-distance water circulation system for heat dissipation, recovery, and transportation, reducing pipeline connection length and lowering pressure loss and leakage risk. This integrated layout eliminates the need for separate external installation of components such as fans and pumps, significantly saving on-site installation space and assembly time, and improving the equipment's adaptability to various scenarios.

[0058] Furthermore, after the spray system 3 sprays cooling water onto the combined condenser core 4, the cooling water absorbs the heat transferred by the core to form a high-temperature water flow. When this high-temperature water flow flows downwards towards the packing material, the packing material disperses the high-temperature water flow into a fine water film or tiny water droplets through its porous or corrugated structure, increasing the contact area between the water flow and the air flowing inside the outer shell 1. Under the drive of negative pressure, the air fully contacts the dispersed high-temperature water flow, quickly carrying away the heat in the water and cooling the high-temperature water flow to low-temperature water. This process not only achieves secondary heat dissipation of the cooling water, but also ensures that the cooling water returning to the water receiving pan maintains a low temperature. When it is subsequently transported back to the spray system 3 by the spray water pump 5, it can still maintain a high-efficiency heat absorption capacity for the condenser core, forming a multi-media synergistic heat dissipation link of water, heat, and air.

[0059] The water collection tray, as the terminal for collecting water and depositing impurities, is usually equipped with a drain outlet and a detachable cleaning structure. During maintenance, it is only necessary to open the drain outlet to discharge the deposited impurities or drain the accumulated water to complete the cleaning without disassembling the core heat exchange components. The packing adopts a modular design to fit the internal space of the outer shell 1. When the packing traps too many impurities, it can be directly removed from the bottom of the outer shell 1 for replacement or cleaning. The operation is convenient and does not require stopping the machine to disassemble the entire condensation system, which greatly shortens the maintenance time and reduces the impact of equipment downtime on production or refrigeration processes.

[0060] Considering the flow channel structure for refrigerant flow in each individual heat exchanger 41, in the combined condenser 81 provided in this embodiment, the tail of the upper condenser tube 411 in each individual heat exchanger 41 is connected to the head of the lower condenser tube 411 to form a serpentine connecting pipe that runs from top to bottom. The wall of the uppermost condenser tube 411 in the serpentine connecting pipe is connected to an air inlet 6, and the wall of the lowermost condenser tube 411 in the serpentine connecting pipe is connected to a liquid outlet 7. The combined condenser 81 provided in this embodiment can increase the heat dissipation efficiency of the refrigerant by adding fins 412 to the refrigerant flow channel structure of the serpentine connecting pipe.

[0061] For example, the serpentine connecting pipe is a continuous flow channel that runs vertically from top to bottom, formed by sequentially connecting the tail of the upper condenser tube 411 and the head of the next condenser tube 411 within the single heat exchanger 41. For example, the single heat exchanger 41 contains 5 horizontally arranged condenser tubes 411. The tail of the first condenser tube 411 is connected to the head of the second condenser tube 411, the tail of the second condenser tube 411 is connected to the head of the third condenser tube 411, and so on, ultimately forming a U-shaped bend and a continuously extending serpentine path. This flow channel structure allows the refrigerant to enter through the inlet 6 on the wall of the uppermost condenser tube 411, and then flow down a serpentine path through all the condenser tubes 411 before exiting through the outlet 7 on the wall of the lowermost condenser tube 411. This flow path design extends the residence time of the refrigerant in the combined condenser core 4. Compared to parallel flow channels, multiple condenser tubes 411 allow refrigerant to enter and exit simultaneously. The serpentine connecting pipes ensures more thorough contact between the refrigerant and the walls of the condenser tubes 411 and the fins 412. The refrigerant can fully contact the tube wall in each condenser tube 411, transferring heat to the fins 412 through the tube wall, and then exchanging heat with the cooling water sprayed by the spray system 3. This avoids the problem of insufficient condensation and premature outflow due to short residence time, significantly improving the condensation conversion rate of the refrigerant, and making it easier for gaseous refrigerant to be converted into liquid.

[0062] The serpentine connecting pipes flow downwards, which is compatible with the cooling environment of the combined condenser 81. Specifically, the spray system 3 sprays cooling water from above, and the cooling water flows downwards along the condenser tubes 411 and fins 412. The refrigerant also flows downwards along the serpentine pipes, forming a heat exchange relationship with the same direction of flow. This ensures that the refrigerant can always contact the cooler cooling water, which has not fully absorbed heat, with the high-temperature refrigerant that has just entered from above. As the cooling water absorbs heat and flows downwards, it can continuously exchange heat with the gradually cooling refrigerant, avoiding the problem of condensate adhesion and blockage caused by sudden drops in local temperature difference that may occur in reverse flow. At the same time, the negative pressure environment created by the centrifugal fan 2 inside the outer casing 1 accelerates the removal of the humid and hot air around the condenser tubes 411. The serpentine flow channel allows the refrigerant to continuously release heat by utilizing the increased heat dissipation area of ​​the fins 412 and airflow circulation as it flows through each condenser tube 411, further ensuring the stable condensation of the refrigerant in each section of the flow channel.

[0063] Thus, in this embodiment of the present disclosure, the refrigerant flow channel of the single-piece heat exchanger 41 is designed as a serpentine connecting pipe from the tail of one condenser tube 411 to the head of the next condenser tube 411. For example, multiple horizontally arranged condenser tubes 411 are connected end to end in sequence to form a vertically continuous flow channel, which prolongs the residence time of the refrigerant in the condenser core, allowing the refrigerant to fully contact the tube wall and fins 412 of the condenser tube 411. Combined with the cooling water flow direction of the spray system 3 and the negative pressure environment of the centrifugal fan 2, the refrigerant condensation conversion rate is significantly improved. At the same time, the single-inlet and single-outlet flow channel design ensures a stable refrigerant flow rate and avoids uneven local heat exchange, further improving the overall condensation efficiency and operational reliability of the combined condenser 81.

[0064] Considering the specific connection structure between the single heat exchanger 41 and the air inlet 6 and liquid outlet 7, in the combined condenser 81 provided in this embodiment, the combined condenser core 4 includes an upper manifold 42 and a lower manifold 43 located laterally on each single heat exchanger 41; at least a portion of the upper manifold 42 is used to communicate with the wall of the uppermost condenser tube 411, and another at least a portion of the upper manifold 42 is used to communicate with the air inlet 6; at least a portion of the lower manifold 43 is used to communicate with the wall of the lowermost condenser tube 411, and another at least a portion of the lower manifold 43 is used to communicate with the liquid outlet 7.

[0065] Thus, this embodiment of the present disclosure, by laterally arranging an upper manifold 42 and a lower manifold 43 on each individual heat exchanger 41, exemplarily, uses hollow pipes parallel to the arrangement direction of the individual heat exchangers 41, and constructs a connection path for the air inlet 6, the upper manifold 42, the uppermost condenser pipe 411 and the lowermost condenser pipe 411 of each individual heat exchanger 41, the lower manifold 43, and the liquid outlet 7, achieves uniform distribution of refrigerant to multiple rows of individual heat exchangers 41 and centralized and stable recovery of condensate. This structure not only reduces refrigerant flow resistance and distribution deviation, avoiding local heat accumulation or liquid hammer problems, but also works in conjunction with the cooling functions of the spray system 3 and the centrifugal fan 2 to fully utilize the heat exchange capacity of multiple rows of individual heat exchangers 41, significantly improving the overall operational stability and condensation efficiency of the combined condenser 81.

[0066] Specifically, both the upper manifold 42 and the lower manifold 43 are located on the side of each individual heat exchanger 41. For example, if multiple rows of individual heat exchangers 41 are arranged horizontally, the upper manifold 42 and the lower manifold 43 are set parallel to the arrangement direction on the left or right side of the individual heat exchangers 41. These hollow tubular structures serve to achieve centralized refrigerant input and centralized condensate output. Taking the upper manifold 42 as an example, one end, or a section thereof, is connected to the inlet 6, the interface for introducing high-temperature gaseous refrigerant. The other end, or other areas, are connected to the wall of the uppermost condenser tube 411 of each row of individual heat exchangers 41 through branch pipes or direct openings. For example, when the combined condenser core 4 contains 4 rows of individual heat exchangers 41, 4 connection ports will be correspondingly opened on the wall of the upper manifold 42, each connection port being connected to the uppermost condenser tube 411 of one row of individual heat exchangers 41. The pipe walls of pipe 411 are welded together to form a refrigerant input path for the air inlet 6, the upper manifold 42, and the uppermost condenser pipe 411 of each individual heat exchanger 41. The connection logic of the lower manifold 43 is similar. One end of it is connected to the liquid outlet 7, which is used to discharge the low-temperature liquid refrigerant. The other end is connected to the corresponding pipe wall of the lowermost condenser pipe 411 of each row of individual heat exchangers 41, forming a condensate output path for the lowermost condenser pipe 411 of each individual heat exchanger 41, the lower manifold 43, and the liquid outlet 7.

[0067] It should be noted that in traditional structures, if the inlet 6 is directly connected to each individual heat exchanger 41, the refrigerant input to some heat exchangers 41 may be too high or too low due to differences in pipe length and resistance. In this solution, the upper manifold 42 serves as an intermediate distribution hub. The gaseous refrigerant input from the inlet 6 first enters the upper manifold 42, forming a stable pressure field within it. Then, it is evenly distributed to the uppermost condenser tube 411 of each row of heat exchangers 41 through the connection ports. This avoids wasted heat exchange area due to insufficient refrigerant in a particular row of heat exchangers, or the risk of flow channel blockage due to excessive refrigerant, thus fully utilizing the overall heat exchange capacity of the multiple rows of heat exchangers 41.

[0068] Furthermore, the upper manifold 42 is directly connected to the uppermost condenser 411, and the lower manifold 43 is directly connected to the lowermost condenser 411, reducing the use of additional connecting pipes and lowering local resistance losses during refrigerant flow. Taking a single-piece heat exchanger 41 as an example, the wall of the uppermost condenser 411 is directly welded to the upper manifold 42. When the refrigerant enters the condenser 411 from the manifold, it does not need to be turned, resulting in smoother flow and smaller flow velocity fluctuations. At the same time, the lower manifold 43 centrally recovers the liquid refrigerant discharged from each single-piece heat exchanger 41, avoiding the liquid hammer phenomenon that may occur when the liquid outlet 7 of a single heat exchanger is directly connected to the liquid outlet main pipe. Due to the difference in liquid pressure between each row, the liquid refrigerant impacts each other, ensuring a smoother flow of refrigerant from the condenser 411 to the liquid outlet 7, reducing equipment operating noise and pipe wear.

[0069] It should be noted that after the upper manifold 42 evenly distributes the refrigerant to each individual heat exchanger 41, the refrigerant flows from top to bottom along the serpentine connecting pipe, and fully exchanges heat with the cooling water sprayed by the spray system 3 and the negative pressure environment formed by the centrifugal fan 2; while the lower manifold 43 centrally recovers the condensed liquid refrigerant, which can quickly discharge the low-temperature liquid refrigerant from the equipment, avoid the accumulation of liquid refrigerant at the bottom of the condenser core, ensure the rapid discharge of condensate, reserve space for the continuous entry of gaseous refrigerant, and further improve the overall condensation efficiency.

[0070] Considering the structural scheme of fins 412 provided on the outer wall of each condenser tube 411 in the combined condenser core 4 to increase the heat dissipation surface, in the combined condenser 81 provided in the embodiments of this disclosure, each fin 412 on the outer wall of the upper condenser tube 411 and the corresponding fin 412 on the outer wall of the lower condenser tube 411 together form an extended facade.

[0071] In this way, by aligning the fins 412 on the outer walls of the upper and lower condenser tubes 411 to form an extended facade, for example, a continuous wall surface with vertically aligned and spliced ​​upper and lower fins 412 of the same specification, the discrete fins 412 are transformed into a continuous heat dissipation structure. This not only increases the effective heat dissipation area and cooling water utilization rate per unit space, but also guides the airflow to flow evenly to reduce resistance and enhance heat exchange, while achieving a balanced heat dissipation load on the upper and lower condenser tubes 411. This structure works in conjunction with the spray system 3 and the centrifugal fan 2 to further explore the functional value of increasing the heat dissipation area of ​​the fins 412, and significantly improve the heat exchange efficiency and energy-saving operation of the combined condenser 81.

[0072] For example, the extended facade refers to the continuous facade structure formed by the fins 412 arranged at intervals on the outer wall of a certain condenser tube 411 located at the top in the serpentine connecting pipe of the single heat exchanger 41, and the fins 412 of the same specification on the outer wall of the adjacent condenser tube 411 directly below, which are aligned in the vertical direction and spliced ​​together. From the side view, the fins 412 of the upper and lower condenser tubes 411 form a continuous wall surface extending in the vertical direction, that is, the extended facade; in each row of single heat exchangers 41, the fins 412 of the upper and lower condenser tubes 411 correspond in this way to form multiple parallel extended facades.

[0073] Specifically, in traditional structures, the fins 412 of the upper and lower condenser tubes 411 are mostly arranged independently without alignment or splicing design. Irregular gaps easily form between the fins 412, causing some of the cooling water sprayed by the spray system 3 to drip directly along the gaps without fully contacting the fins 412. At the same time, the airflow easily forms vortices in the gaps, reducing heat exchange efficiency. However, the extended facade, through the alignment and splicing of the upper and lower fins 412, connects the originally discrete fins 412 into a continuous heat dissipation facade. On the one hand, it increases the effective heat dissipation area per unit space. Taking a single-plate heat exchanger 41 containing 5 condenser tubes 411 as an example, the extended facade structure can increase the effective heat dissipation area, allowing the heat conducted from the condenser tubes 411 to the fins 412 through the tube wall to more fully contact the cooling medium. On the other hand, the continuous wall formed by the extended facade can guide the cooling water to flow along the facade, prolonging the residence time of the cooling water on the surface of the fins 412, allowing the cooling water to fully absorb the heat transferred by the fins 412, further improving heat exchange efficiency and avoiding water waste.

[0074] It should be noted that after the centrifugal fan 2 creates negative pressure inside the outer casing 1, dry and cold air from the outside is drawn in from the lower part of the outer casing 1 and must flow through the gaps between the fins 412 of the combined condenser core 4. The irregular gaps of the traditional discrete fins 412 easily lead to airflow splitting and uneven flow velocity, with some areas having excessively fast flow velocity and others having excessively slow flow velocity. However, the parallel and continuous gaps formed by the extended facades, with consistent spacing between each extended facade, can guide the airflow to flow evenly along the gaps, avoiding the formation of vortices or short circuits between the fins 412. This ensures that every stream of air can fully contact the fins 412 and quickly remove the heat from the surface of the fins 412. At the same time, the continuous structure of the extended facades can also reduce airflow resistance and reduce the operating load of the centrifugal fan 2. Under the same exhaust effect, it can reduce the fan's energy consumption, taking into account both heat dissipation efficiency and energy saving.

[0075] Furthermore, since the extended facade is formed by the fins 412 of the upper and lower condenser tubes 411, the heat conducted from the upper condenser tube 411 to the fins 412 through the tube wall can be indirectly transferred to the lower fins 412 through the splicing parts of the extended facade or the air in the gaps, and then transferred to the lower condenser tube 411. When the high-temperature gaseous refrigerant in the upper condenser tube 411 releases heat, some of the heat is transferred to the lower fins 412 through the extended facade, which helps the refrigerant in the lower condenser tube 411, which has already been preliminarily cooled, to further dissipate heat. This avoids the lower condenser tube 411 from becoming idle due to the gradual condensation of the refrigerant and the reduction in heat release intensity, thus achieving a balanced distribution of the heat dissipation load of the upper and lower condenser tubes 411, improving the overall heat exchange stability of the single-piece heat exchanger 41, and avoiding a decrease in condensation efficiency caused by local overheating.

[0076] Considering the combination scheme of the extended facade formed by the fins 412 on the outer wall of each condenser tube 411, in the combined condenser 81 provided in this embodiment, each fin 412 on the outer wall of the upper condenser tube 411 and the corresponding fin 412 on the outer wall of the lower condenser tube 411 are spliced ​​together to form an extended facade.

[0077] For example, an extended facade refers to a continuous wall surface formed by vertically aligning and splicing the fins 412 on the outer walls of adjacent upper and lower condenser tubes 411. For instance, the spacing between the fins 412 of the upper condenser tube 411 is 3mm, the spacing between the fins 412 of the lower condenser tube 411 is 3mm, and the center lines of the upper and lower fins 412 coincide, with only a 2mm gap or direct contact. From the side view, it appears as a continuous vertical wall. Each row of single heat exchangers 41 can form multiple parallel extended facades.

[0078] In this way, the discrete fins 412 of the upper and lower condenser tubes 411 can be transformed into a continuous heat dissipation structure, avoiding the problems of direct dripping of cooling water and airflow turbulence caused by the irregular gaps between the traditional discrete fins 412. For example, after the upper condenser tube 411 fins 412 are spliced ​​with the lower condenser tube 411 fins 412, the cooling water will flow along the extended vertical surface, and the residence time will be extended to fully absorb the heat of the fins 412. The continuous extended vertical surface can guide the airflow to flow evenly along the parallel gaps, and the flow velocity deviation is controlled within a small range, reducing airflow resistance. Combined with the negative pressure environment of the centrifugal fan 2, the heat is quickly removed, and the heat dissipation load of the upper and lower condenser tubes 411 is balanced to avoid local overheating.

[0079] Considering one of the installation schemes between the fins 412 and the corresponding condenser tubes 411, in the combined condenser 81 provided in this embodiment, each fin 412 is inserted into the outer wall of each condenser tube 411.

[0080] For example, the fin 412 insertion installation refers to the axially spaced slots on the outer wall of the condenser tube 411 that are adapted to the fin 412. The width of the slot is the same as the thickness of the fin 412. The fin 412 is inserted into the slot, and the clamping force of the slot makes the fin 412 and the outer wall of the condenser tube 411 tightly fixed without the need for additional connectors. This is commonly seen in the assembly of aluminum fins 412 and copper condenser tubes 411.

[0081] This allows for rapid assembly of the fins 412 and the condenser tube 411, reducing the complexity of the production process. Compared to welding, the insertion installation does not require high-temperature heating, which can prevent the condenser tube 411 from deforming due to high temperature and affecting the refrigerant flow. At the same time, the insertion structure facilitates the later maintenance and replacement of damaged fins 412, reducing equipment maintenance costs. Furthermore, after the fins 412 are inserted, they fit tightly against the outer wall of the condenser tube 411, ensuring that the heat from the condenser tube 411 wall is stably conducted to the fins 412 through contact. Combined with the extended vertical structure, this ensures that the heat dissipation efficiency is not affected by the installation method.

[0082] Considering the second installation scheme between the fins 412 and the corresponding condenser tubes 411, in the combined condenser 81 provided in this embodiment, each fin 412 is welded to the outer wall of each condenser tube 411.

[0083] For example, the fin 412 is typically installed by brazing. A brazing filler metal, such as a copper-zinc alloy filler metal, is applied to the contact area between the fin 412 and the condenser tube 411. The filler metal melts at a high temperature and, after cooling, the fin 412 and the condenser tube 411 are firmly connected. The welded area forms a dense metal bonding layer without obvious gaps, which is common in scenarios where high thermal conductivity is required.

[0084] This enhances the connection stability and thermal conductivity of the fins 412 and condenser tubes 411. Welding eliminates the gap between the fins 412 and the outer wall of the condenser tubes 411, forming an integrated structure. The heat from the condenser tube wall can be directly and quickly transferred to the fins 412, improving thermal conductivity compared to insert installation. This also prevents the fins 412 from loosening due to vibration during long-term use, thus avoiding thermal breakage. It is especially suitable for high-vibration, high-load operating scenarios, such as large industrial combined condensers 81, ensuring long-term stable heat dissipation of the equipment.

[0085] Considering the addition of a heat conduction scheme for refrigerant at the pipe connection in the combined condenser core 4, in the combined condenser 81 provided in this embodiment, metal heat-conducting sleeves are provided at the connection points between the upper manifold 42 and the uppermost condenser 411, and between the lower manifold 43 and the lowermost condenser 411. One end of the metal heat-conducting sleeve is fitted onto the outside of the condenser 411 and welded to the pipe wall, while the other end is inserted into the inside of each manifold and tightly fitted to the inner wall of each manifold.

[0086] For example, the metal heat-conducting sleeve is a tubular structure made of a high thermal conductivity metal, such as copper or aluminum alloy. One end of the inner diameter is adapted to the outer diameter of the condenser tube 411 and is fixed to the condenser tube 411 by welding; the other end of the outer diameter is adapted to the inner diameter of the manifold and is inserted into the manifold to fit tightly against the inner wall, covering the key heat-conducting area at the connection.

[0087] This solves the problem of heat conduction obstruction caused by the connection gap between the manifold and the condenser 411. The metal heat-conducting sleeve, such as the copper heat-conducting sleeve, is fixed to the condenser 411 by welding and is also tightly fitted to the inner wall of the manifold, forming a continuous heat conduction path of the condenser 411, the metal heat-conducting sleeve, and the manifold. This avoids the increase in thermal resistance caused by the air gap at the connection point, significantly improves the heat transfer efficiency, and ensures that there is no local heat accumulation of refrigerant at the connection point.

[0088] Considering the specific heat conduction structure scheme at the metal heat conduction sleeve, in the combined condenser 81 provided in this embodiment, the inner wall of the metal heat conduction sleeve is provided with heat conduction protrusions extending along its axial direction, the heat conduction protrusions abut against the pipe wall of the condenser tube 411, and the outer wall of the metal heat conduction sleeve is provided with multiple heat conduction fins, which are arranged at intervals along the circumference of the metal heat conduction sleeve; the metal heat conduction sleeve is configured to enhance the heat conduction from the pipe wall of the condenser tube 411 to the metal heat conduction sleeve through the heat conduction protrusions, and then conduct the heat to the refrigerant in each manifold or the surrounding cooling environment through the heat conduction fins.

[0089] This can prevent localized heat buildup at the connection point due to impaired heat conduction.

[0090] Specifically, the heat-conducting protrusions increase the contact area with the wall of the condenser tube 411, allowing heat from the condenser tube 411 wall to be transferred to the metal heat-conducting sleeve more efficiently. Meanwhile, the heat-conducting fins on the outer wall increase the contact area between the metal heat-conducting sleeve and the refrigerant in the manifold and the surrounding cooling air, enabling rapid heat dispersion and transfer. This further reduces the thermal resistance at the connection point, ensuring that heat can be smoothly transferred when the refrigerant flows between the manifold and the condenser tube 411, without the problem of reduced condensation efficiency caused by local accumulation.

[0091] In addition, the combined condenser 81 provided in this embodiment also includes packing material. The packing material can be disposed below the spray system 3 and above the combined condensing core 4. The spray system 3, which includes spray pipes and atomizing nozzles, is located in the upper part of the inner shell 1. It is arranged horizontally in layers with the combined condensing core 4, which includes multiple rows of single-plate heat exchangers 41, including condensing tubes 411 and fins 412, in the middle part of the inner shell 1. Specifically, 1-2 layers of packing material are fixed to the inner wall of the outer shell 1 by stainless steel or corrosion-resistant plastic brackets. The bottom of the brackets is provided with grid-like support to prevent the packing material from being deformed by pressure. The total thickness of the packing material layer is controlled at 150-300mm to match the height of the middle space of the combined condenser 81 and does not affect the original distance between the condensing core and the spray system 3. The packing material selected here is mainly corrugated packing made of metal, such as aluminum or stainless steel. The layered structure of the corrugated packing can correspond to the multi-row single-plate heat exchangers 41 of the combined condenser core 4, ensuring that the cooling water can evenly cover the fins 412 and condenser tubes 411 of each heat exchanger below after being distributed by the packing.

[0092] Additionally, a thin packing layer can be added between the combined condenser core 4 and the water collection tank in the lower part of the inner casing 1. This packing layer is also fixed by a bracket, and a preset distance is maintained between the packing layer and the top opening of the water collection tank to prevent the packing from contacting accumulated water and causing blockage. This embodiment does not limit the preset distance; any distance that achieves the above-mentioned effect is acceptable.

[0093] In this area, stepped ring packing or Pall ring packing is preferred. The ring structure has high porosity, which allows airflow to pass through while intercepting water droplets, and is not easily blocked by the accumulation of cooling water dripping from the condensation core.

[0094] For example, taking a commercial combined condenser 81 as an example, a preset space is reserved between the spray system 3 inside the outer shell 1 and the combined condensing core 4. A layer of aluminum corrugated packing with a first thickness is laid in this space. The corrugation direction of the packing is at a 45° angle to the arrangement direction of the single-piece heat exchangers 41, ensuring that when the cooling water flows along the corrugated surface, it can cover each condensing tube 411 of the three rows of single-piece heat exchangers 41 below. At the same time, a layer of plastic stepped ring packing with a second thickness is installed below the condensing core and above the water collection tank. The diameter of the packing ring is not limited, as long as it meets the application effect of the present disclosure embodiment. It is fixed by a plastic bracket, and the bottom of the bracket is at a preset distance from the top of the water collection tank, which does not affect the cooling water return flow and can intercept water droplets carried by the airflow. The present disclosure embodiment does not limit the range of the preset distance, as long as it can meet the corresponding technical effect.

[0095] To address the issue of fouling, the combined condenser 81 provided in this embodiment also includes a water treatment device. This device comprises a high-frequency electromagnetic generator and a magnetic coil extending from the generator. The magnetic coil is wound around the outer wall of the spray pipe. The high-frequency electromagnetic generator is mounted on a support member next to the spray pump 5. Exemplarily, the support member next to the spray pump 5 can be a portion of the outer casing 1, or it can be any of the following: a column or a housing added next to the spray pump 5 for mounting and support.

[0096] Thus, the water treatment device (including a high-frequency electromagnetic generator and a magnetic coil) is the core component for scale prevention and protection in the combined condenser 81. It blocks scale formation in key flow channels from the source through physical electromagnetic action. The magnetic coil is specifically wound around the outer wall of the upper manifold 42, the lower manifold 43 (the refrigerant distribution channel of the condenser core), and the connecting pipe of the spray water pump 5 (cooling water delivery channel). The alternating current output by the high-frequency electromagnetic generator is converted into a high-frequency magnetic field covering the inside of the pipe through the coil. When cooling water or refrigerant flows through these pipes, the magnetic field polarizes the calcium and magnesium ions in the water, destroying the conditions for the formation of dense hard scale and causing it to be converted into loose flocculent soft scale (discharged with the water flow through the drain port of the water receiving pan). This not only prevents scale buildup on the inner wall of the manifold from hindering heat conduction and narrowing the refrigerant flow channel, but also prevents scale buildup in the spray water pump 5 pipe from increasing water flow resistance and causing the spray flow rate to decrease, ensuring the smooth flow of the dual core channels of refrigerant and cooling water in the condenser.

[0097] Meanwhile, the water treatment device, through its matching application with the original condenser system, indirectly protects the condenser tubes 411 and fins 412 of the combined condenser core 4 with its anti-scaling function, reducing the amount of scale that can adhere to the circulating water, preventing scale from covering the fins 412, and ensuring that the function of the fins 412 in expanding the heat dissipation area is properly performed. Combined with the filtering and heat dissipation functions of the packing, it maintains an efficient link of heat absorption by spray water, heat exchange by fins 412, and heat dissipation by air. In addition, it does not rely on chemical acid washing for descaling, avoiding the risk of corrosion of metal parts by the agents, extending the service life of core components, and reducing the frequency of disassembly and maintenance. It ensures the stable operation of the closed loop of cooling water spraying, heat dissipation, recovery, and re-spraying, ultimately providing key support for the condenser to maintain high condensing efficiency and low energy consumption operation in the long term.

[0098] This disclosure also provides an air conditioner including the aforementioned combined condenser 81, which constructs a dual heat exchange path by adding air-cooled fins 412 to the outer wall of the evaporative cooling condenser tube 411, thereby significantly improving the cooling efficiency.

[0099] An air conditioner provided in this embodiment includes a condensing module 8 composed of the aforementioned four combined condensers 81, and further includes an oil separator 9, a compressor 10, and an evaporator 11, which can achieve all the effects of the aforementioned combined condensers 81.

[0100] Specifically, the fins 412 are arranged at intervals along the axial direction of the condenser tube 411, directly increasing the contact area between the condenser tube 411 and the air. Compared with a pure evaporative condenser without fins 412, the fins 412 increase the heat dissipation area of ​​the condenser tube 411. When the air conditioner is running, the negative pressure airflow generated by the centrifugal fan 2 passes through the gaps between the fins 412, which can quickly remove the heat of the refrigerant conducted through the tube wall on the outer wall of the condenser tube 411. The heat released by the condensation of the gaseous refrigerant achieves air-cooled auxiliary heat dissipation. Especially in medium and low temperature environments, where the air temperature is low, the air-cooling effect of the fins 412 can accelerate the condensation rate of the refrigerant, thereby increasing the cooling capacity of the air conditioner.

[0101] Meanwhile, the fins 412 work synergistically with the evaporative cooling spray system 3. The cooling water sprayed by the spray system 3 adheres to the surface of the fins 412, forming a uniform liquid film. The porous structure of the fins 412, through the gaps formed by the spaced arrangement of the fins 412, extends the residence time of the cooling water, allowing the cooling water to fully absorb the heat transferred by the fins 412 and evaporate and absorb heat. At the same time, the airflow accelerates the evaporation of water when passing through the gaps of the fins 412, further enhancing the evaporative cooling heat exchange. This dual effect of air cooling and evaporative cooling of the fins 412 allows the air conditioner to avoid the heat exchange breakage problem caused by the excessively rapid evaporative cooling condenser in high-temperature environments, and maintains stable cooling efficiency.

[0102] Furthermore, the fins 412 are tightly fitted to the outer wall of the condenser tube 411 by insertion or welding, ensuring that the heat from the condenser tube 411 wall is efficiently transferred to the fins 412. This allows the air conditioner to achieve air cooling by simply driving the airflow through the fins 412 when the indoor temperature is close to the set temperature during low-load operation, without starting the spray system 3. At this time, the air conditioner only consumes fan energy, which is lower than the traditional mode of starting the spray pump 5, significantly improving the economy of partial load operation.

[0103] It should be noted that the fins 412 are evenly arranged along the axial direction of the condenser tube 411 and the spacing is adapted to the airflow speed, which reduces the resistance of airflow passing through the fins 412. This allows the centrifugal fan 2 to maintain sufficient airflow without high-frequency operation, and the fan power consumption is reduced. At the same time, due to the improved heat dissipation efficiency of the refrigerant, the compressor 10 does not need to compress at high frequency for a long time. The operating time of the compressor 10 is reduced, the overall APF value of the air conditioner is improved, and it reaches the super-first-level energy efficiency standard.

[0104] It should be noted that the fins 412 are made of corrosion-resistant aluminum or stainless steel, and their surfaces are treated with anti-corrosion measures such as anodizing and galvanizing. In humid environments, such as the rainy season in southern China or high-salt-fog environments along the coast, the fins 412 are less prone to oxidation and rust, avoiding problems such as reduced heat dissipation area and decreased heat conduction efficiency caused by fin corrosion. Compared to traditional untreated fins 412, their service life is extended, reducing the risk of sudden drops in cooling efficiency due to fin damage and ensuring long-term stable cooling. The fins 412 are arranged axially along the condenser tube 411 with an unobstructed design, facilitating daily cleaning and maintenance. In dusty environments, such as industrial areas, dust does not easily accumulate in the gaps between the fins 412. Even if there is a small amount of dust, it can be directly cleaned by blowing it away with a high-pressure air gun without disassembling the condenser. Compared to traditional integrated fins 412, which are prone to clogging and difficult to clean, the maintenance cycle is extended and the maintenance time is shortened, reducing the later maintenance costs and downtime of the air conditioner.

[0105] Furthermore, in arid and water-scarce regions, the air conditioner can reduce the frequency of the spray system 3 activation and mainly rely on the air cooling heat dissipation of the fins 412. The large heat dissipation area of ​​the fins 412 ensures that even without the assistance of cooling water, sufficient heat can still be carried away by the airflow, avoiding the problem that traditional pure evaporative air conditioners cannot cool properly in water-scarce environments, and adapting to the needs of use in arid regions of Northwest China.

[0106] In high-temperature and high-humidity environments, such as summer in the south, the synergistic effect of fins 412 and spray system 3 becomes prominent. The cooling water film on the surface of fins 412 evaporates faster due to airflow, improving heat absorption efficiency. At the same time, the air-cooling effect of fins 412 can quickly remove the humid and hot air generated by evaporation, avoiding the accumulation of humid and hot air in the condenser, which leads to a decrease in heat exchange efficiency. This allows the air conditioner to maintain a high rated cooling capacity even in extreme environments with outdoor temperatures of 45℃ and humidity of 80%, far exceeding that of traditional air conditioners.

[0107] To further understand the combined condenser 81 and air conditioner solution provided in this disclosure, the following exemplary description is provided:

[0108] The internal components of the condenser module 8 are integrated into a single unit through an integrated design. Finally, it is protected by an exterior panel, resulting in a simple and aesthetically pleasing overall appearance.

[0109] Referring to the accompanying drawings, the integrated combined condenser provided in this embodiment comprises, from bottom to top: a water receiving pan, a water pump, packing, a combined condenser 81, packing, a spray piping system, and a fan. All these components are highly integrated, making full use of limited space, effectively reducing pressure loss in the water system, and improving the efficiency of the water pump. Packing is arranged both above and below the combined heat exchanger to increase the heat exchange area, promote uniform gas-liquid distribution, enhance heat and mass exchange, and reduce air resistance. The packing surrounds the heat exchanger from top to bottom, creating a favorable heat exchange environment. By employing an evaporative-cooled and air-cooled combined condenser 81, combining the advantages of both types of condensers, the heat exchange efficiency of the unit is improved.

[0110] Refer to the attached diagram showing the single-piece and refrigerant flow path. A novel variable-flow-path horizontal tube type high-efficiency stainless steel heat exchange tube condenser structure with internal and external threads is used. A coupled theoretical model of medium heat transfer in the evaporative-air-cooled condenser is established to study the optimal solution for heat transfer performance under the combined influence of different parameters such as different flow paths, different operating conditions, different seasons, and different air volumes. The goal is to achieve efficient operation of the combined condenser year-round, in all seasons, and in all regions.

[0111] Referring to the attached diagram, the finned 412 heat exchanger tube structure is shown. The fins 412 increase the contact area between the heat exchanger tube and the fluid, disrupting the fluid boundary layer and increasing the heat transfer coefficient, thus significantly improving heat transfer efficiency. The finned 412 heat exchanger tube has a compact structure, achieving a large heat transfer area in a small space, realizing the miniaturization and weight reduction of the combined heat exchanger. Through flow channel arrangement and combination, it can adapt to different heat transfer conditions such as counter-flow, cross-flow, multi-stream flow, and multi-pass flow. It can also meet different heat transfer requirements through series, parallel, and series-parallel combinations. The structure is relatively simple, easy to disassemble and clean, convenient for daily maintenance, and helps extend its service life.

[0112] Referring to the attached diagram, the combined condenser 81 structure employs an asymmetric, low-flow-resistance gas-liquid inlet method. This facilitates subsequent inspection, overall pipe connection, and performance improvement. The entire condenser component is filled with fins 412. A multi-stage water distribution and equalization structure design ensures uniform distribution of spray water across the heat exchange tube surface through four levels of water distribution and equalization orifices. Furthermore, the spatial distribution of the fins 412 further promotes uniform water distribution throughout the space. The complex microstructure and large specific surface area of ​​the fins 412 increase the heat exchange area. The presence of the fins 412 increases the stability and residence time of the water film, prolonging the gas-liquid contact time and resulting in more thorough heat and mass exchange. The parallel arrangement of the fins 412 guides orderly airflow, reducing turbulence and eddies during airflow, thereby lowering airflow resistance and effectively reducing fan energy consumption.

[0113] Refer to the system schematic diagram of the condenser in the attached diagram. The unit basically has two cooling modes: evaporative cooling and air-cooled cooling.

[0114] Evaporative cooling mode: In spring, summer, and autumn, when the ambient temperature is above 0℃, the unit operates in evaporative cooling mode, with compressor 10 operating at 100% evaporative cooling capacity. The unit employs a new type of evaporative condenser, where cooling water actively forms a film outside the heat exchange tubes, improving heat exchange performance between the outer wall of the heat exchange tubes and the water film. The water film evaporates on the surface of the heat exchange tubes, carrying away heat from the refrigerant, thus achieving condensation of the high-temperature, high-pressure refrigerant. Furthermore, the fins 412 increase the heat exchange area, promote uniform gas-liquid distribution, enhance heat and mass exchange, and reduce air resistance, significantly improving heat exchange performance. This demonstrates that the combined condenser 81 performs better than a simple evaporative cooling condenser.

[0115] Air-cooled refrigeration mode: In winter, when the ambient temperature is below 0 degrees Celsius, the evaporative condenser cannot function due to the freezing of the spray water system. The spray water system is shut off, and the unit operates in air-cooled refrigeration mode. The heat dissipation effect of the air-cooled condenser is closely related to the ambient temperature. When the ambient temperature is low, the cooling capacity of the air increases, leading to a decrease in the condensing temperature of the condenser, improving the coefficient of performance of the refrigeration system, and reducing the energy consumption and operating costs of the compressor 10.

[0116] Refer to the attached diagram showing the condenser assembly. The highly integrated condensers form a universal modular structure. Different numbers of condenser modules are used to meet the varying heat exchange requirements of the main unit.

[0117] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0118] It should be noted that the use of terms such as "one implementation," "example," "exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0119] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or air conditioner that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or air conditioner. Unless otherwise specified, an element defined by the statement "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or air conditioner that includes said element.

[0120] The above embodiments are merely preferred embodiments provided to fully illustrate this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.

Claims

1. A combined condenser, characterized in that, include: The outer casing contains, from top to bottom, a centrifugal fan, a spray system, a combined condenser core, packing material, and a water collection tray, with the centrifugal fan located at the top of the outer casing. The spray system is located in the upper region inside the outer shell; the combined condenser core is located in the middle region inside the outer shell; a spray water pump is installed next to the water receiving tray, and both the water receiving tray and the spray water pump are located in the lower region inside the outer shell; The spray pump is configured to deliver cooling water from the water collection tank at the bottom of the housing to the spray system located in the upper region inside the housing. The spray system is used to spray cooling water onto the combined condenser core located below it to complete refrigerant condensation. The centrifugal fan is configured to exhaust air through the top of the housing and create a negative pressure inside the housing to accelerate the discharge of hot and humid air around the combined condenser core. High-temperature water flows to the packing material, which is used to disperse heat and filter impurities. Low-temperature water flows to the water receiving tray, which is used to collect the low-temperature water. The spray pump in the spray system is used to pump the water from the water receiving tray back to the spray system. The combined condenser core includes multiple rows of single-piece heat exchangers arranged along a first direction, which is the thickness direction of the single-piece heat exchanger. Each single-piece heat exchanger includes multiple condenser tubes arranged horizontally from top to bottom. The outer wall of each condenser tube has multiple fins spaced apart along its respective axial direction. The condenser tubes conduct heat to the fins through their outer walls to increase the heat dissipation area through the fins. In each of the single-piece heat exchangers, the tail of the upper condenser tube is connected to the head of the lower condenser tube to form a serpentine connecting pipe that runs from top to bottom. The wall of the uppermost condenser tube in the serpentine connecting pipe is connected to an air inlet, and the wall of the lowermost condenser tube in the serpentine connecting pipe is connected to a liquid outlet. The combined condenser core includes an upper manifold and a lower manifold located laterally on each of the single-piece heat exchangers; at least a portion of the upper manifold is used to communicate with the wall of the uppermost condenser tube, and at least another portion of the upper manifold is used to communicate with the air inlet; at least a portion of the lower manifold is used to communicate with the wall of the lowermost condenser tube, and at least another portion of the lower manifold is used to communicate with the liquid outlet. The upper manifold and the uppermost condenser are connected by a metal heat-conducting sleeve, and the lower manifold and the lowermost condenser are connected by a metal heat-conducting sleeve. One end of the metal heat-conducting sleeve is fitted onto the outside of the condenser wall and welded to the wall, and the other end is inserted into the inside of each manifold and fits tightly against the inner wall of each manifold. The inner wall of the metal heat-conducting sleeve is provided with heat-conducting protrusions extending along its axial direction. The heat-conducting protrusions abut against the wall of the condenser tube. The outer wall of the metal heat-conducting sleeve is provided with multiple heat-conducting fins, which are arranged at intervals along the circumference of the metal heat-conducting sleeve. The metal heat-conducting sleeve is configured to enhance the heat conduction from the condenser tube wall to the metal heat-conducting sleeve through the heat-conducting protrusions, and then conduct the heat to the refrigerant in each manifold or the surrounding cooling environment through the heat-conducting fins.

2. The combined condenser according to claim 1, characterized in that, Each fin on the outer wall of the upper condenser tube and the corresponding fin on the outer wall of the lower condenser tube together form an extended facade.

3. The combined condenser according to claim 1, characterized in that, Each fin on the outer wall of the upper condenser tube and the corresponding fin on the outer wall of the lower condenser tube are joined together to form an extended facade.

4. The combined condenser according to claim 1, characterized in that, Each of the fins is inserted into the outer wall of each of the condenser tubes; or, each of the fins is welded to the outer wall of each of the condenser tubes.

5. The combined condenser according to claim 1, characterized in that, The combined condenser includes a water treatment device, which includes a high-frequency electromagnetic generator and a magnetic coil extending from the high-frequency electromagnetic generator. The magnetic coil is wound around the outer wall of the spray pipe, and the high-frequency electromagnetic generator is mounted on a support next to the spray water pump.

6. An air conditioner, characterized in that, Includes the combined condenser as described in any one of claims 1-5.

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