Evaporative condenser and air conditioner

Abstract

The utility model relates to an evaporative condenser and an air conditioner, the evaporative condenser comprises a coil pipe integrally in a wave shape, the coil pipe comprises a superheating pipe, a condensing pipe and a supercooling pipe which are sequentially communicated in the flowing direction of fluid in the coil pipe, and the superheating pipe, the condensing pipe and the supercooling pipe are sequentially arranged in the height direction of the evaporative condenser; the pipe diameter of the condensation pipe is larger than that of the superheating pipe, and the pipe diameter of the condensation pipe is larger than that of the supercooling pipe. The outer wall area of the condenser pipe is larger than the outer wall area of the supercooling pipe, so that the mass and heat transfer efficiency of a coolant in the condenser pipe and a spray water film and air in the evaporative condenser is improved; and the heat exchange area in the condensation pipe is increased, so that the flow speed of the refrigerant in the condensation pipe is reduced, the heat exchange amount of the spraying water film and the refrigerant in the condensation pipe is further improved, and the heat exchange efficiency of the evaporative condenser is improved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning, and in particular to an evaporator-condenser and an air conditioner. Background Technology

[0002] An evaporative condenser consists of a water spray system and heat exchange tubes. The working principle of the heat exchange tubes can generally be divided into three processes: ① heat transfer between the refrigerant and the tube wall; ② convective heat transfer between the sprayed water and the tube wall; ③ mass and heat transfer between the water film and the air. In the entire heat exchange process of the evaporative condenser, the mass and heat transfer between the water film and the air is the most crucial part. However, in existing evaporative condensers, the mass and heat transfer efficiency between the water film on the heat exchange tube surface and the air is relatively low, and the heat exchange efficiency of the evaporative condenser needs further improvement. Utility Model Content

[0003] Therefore, it is necessary to provide an evaporator-condenser and an air conditioner that are conducive to improving heat exchange efficiency.

[0004] An evaporative condenser includes an integrally serpentine coil, the coil comprising a superheater tube, a condenser tube, and a subcooler tube connected in sequence, the superheater tube, the condenser tube, and the subcooler tube being arranged sequentially along the height direction of the evaporative condenser, the diameter of the condenser tube being larger than the diameter of the superheater tube, and the diameter of the condenser tube being larger than the diameter of the subcooler tube.

[0005] In one embodiment, the total length of the superheated tube accounts for % to 5% of the total length of the coil assembly.

[0006] In one embodiment, the total length of the subcooling tube accounts for 5% to 5% of the total length of the coil assembly.

[0007] In one embodiment, the superheated tube includes at least one superheated section extending along the length of the evaporator-condenser, the condenser tube includes at least one condensing section extending along the length of the evaporator-condenser, and the subcooled tube includes at least one subcooled section extending along the length of the evaporator-condenser, the total number of the superheated section, the condensing section and the subcooled section being 10 to 20.

[0008] In one embodiment, there are at least two superheated sections, which are spaced apart along the height of the evaporator-condenser, and adjacent superheated sections are connected by a first connecting section.

[0009] And / or, there are at least two condensing sections, which are arranged at intervals along the height direction of the evaporator condenser, and adjacent two condensing sections are connected by a second connecting section.

[0010] In one embodiment, the outer wall diameter of the condenser tube is 9 mm to 6 mm;

[0011] The outer wall diameter of the superheater tube is 4% to 6% of the outer wall diameter of the condenser tube.

[0012] And / or, the outer wall diameter of the subcooling tube is 4% to 6% of the outer wall diameter of the condenser tube.

[0013] In one embodiment, the condenser tube and the superheater tube are connected by a reducing elbow;

[0014] And / or, the condenser tube and the subcooling tube are connected by a reducing elbow.

[0015] In one embodiment, the end where the superheater tube connects to the condenser tube is a first flared end, and the cross-sectional area of ​​the first flared end is equal to the cross-sectional area of ​​the condenser tube;

[0016] Alternatively, the end where the condenser tube connects to the superheater tube is a first constricted end, and the cross-sectional area of ​​the first constricted end is equal to the cross-sectional area of ​​the superheater tube.

[0017] In one embodiment, the end where the subcooling tube connects to the condenser tube is a second flared end, and the cross-sectional area of ​​the second flared end is equal to the cross-sectional area of ​​the condenser tube;

[0018] Alternatively, the end where the condenser tube connects to the subcooling tube is a second constricted end, and the cross-sectional area of ​​the second constricted end is equal to the cross-sectional area of ​​the subcooling tube.

[0019] This application also provides an air conditioner including an evaporator-condenser as described in any of the preceding embodiments.

[0020] Compared with the prior art, in the evaporator-condenser provided in this application, the diameter of the condenser tube is larger than that of the superheater tube, and the diameter of the condenser tube is larger than that of the subcooler tube. In other words, the condenser tube has the largest diameter, and the outer wall area of ​​the condenser tube is relatively larger than that of the superheater tube and the subcooler tube. This improves the mass and heat transfer efficiency between the refrigerant in the condenser tube and the sprayed water film and air in the evaporator-condenser. Furthermore, the increased heat exchange area inside the condenser tube reduces the refrigerant flow rate inside the condenser tube, further increasing the heat exchange between the sprayed water film and the refrigerant inside the condenser tube, thereby improving the heat exchange efficiency of the evaporator-condenser. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an evaporator-condenser according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of a coil according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of a coil according to another embodiment of this application;

[0025] Figure 4 A simplified structural diagram of an air conditioner provided in one embodiment of this application.

[0026] Attached image label: 1. Air conditioner;

[0027] 10. Evaporator / Condenser; 100. Coil; 110. Superheater Tube; 111. Superheater Section; 112. First Connecting Section; 113. First Flared End; 120. Condenser Tube; 121. Condenser Section; 122. Second Connecting Section; 130. Subcooler Tube; 131. Subcooler Section; 132. Second Flared End; 140. Gas Distribution Pipe; 150. Liquid Collector Pipe; 160. End Plate; 170. Side Plate; 200. Fan; 300. Spray Water Assembly; 400. Water Baffle; 500. Packing Material; 600. Water Tank;

[0028] 20. Compressor; 30. Evaporator; 40. Throttling device. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0034] Please see Figures 1 to 3 This application provides an evaporative condenser 10, including a coil 100 that is generally serpentine in shape. The coil 100 includes a superheated tube 110, a condensing tube 120 and a subcooling tube 130 connected in sequence. The superheated tube 110, the condensing tube 120 and the subcooling tube 130 are arranged in sequence along the height direction of the evaporative condenser 10. The diameter of the condensing tube 120 is larger than the diameter of the superheated tube 110 and the diameter of the subcooling tube 130 is larger than the diameter of the subcooling tube 130.

[0035] It should be noted that the aforementioned serpentine shape can also be called a wave shape or an S-shape. The fluid flows sequentially through the heat pipe 110, condenser 120, and subcooler 130 within the coil. The fluid can be a refrigerant, and will be used as the term "refrigerant" in the following explanation. The refrigerant enters the superheater 110 in the coil 100 as a high-temperature, high-pressure gas. The gaseous refrigerant condenses into a liquid state in the superheater 110 and condenser 120. The liquid refrigerant flows to the subcooler 130 for further cooling, ensuring that the temperature of the liquid refrigerant exiting the subcooler 130 is lower than the condensation temperature at that pressure, thus preventing the liquid refrigerant from vaporizing due to pressure drop in the subcooler 130 or other factors.

[0036] It is understandable that, such as Figure 1 As shown, the evaporative condenser also includes a main body, on which the aforementioned coil 100 is mounted. The main body includes a fan 200, a water spray assembly 300, a baffle plate 400, packing 500, and a water tank 600. Two coils 100 are provided, one on each side of the evaporative condenser 10. The water spray assembly 300 is positioned above the coils 100 to facilitate contact between the sprayed water and the coils 100 during operation. The fan 200 is positioned between the two coils 100, driving airflow and creating a certain wind speed. Within the coils 100, the airflow direction can be the same as or opposite to the sprayed water flow direction. The heat of the high-temperature gaseous refrigerant within the coils 100 is absorbed by the sprayed water, which evaporates, causing the refrigerant within the coils 100 to cool from a gaseous state to a liquid state, thus achieving condensation and cooling. Alternatively, the refrigerant inside coil 100 condenses upon encountering cold air and spray water, releasing heat. The cold air and spray water then form a spray water film, carrying away this heat. Packing material 500 is positioned below coil 100 to cool the spray water, which then flows into the water tank 600 below. A baffle plate 400 is located between the two packing materials 500 to prevent unevaporated spray water from escaping from the packing materials 500 due to excessive wind speed.

[0037] In the evaporator-condenser 10 of this embodiment, the diameter of the condenser tube 120 is larger than that of the superheater tube 110, and the diameter of the condenser tube 120 is larger than that of the subcooler tube 130. That is to say, the diameter of the condenser tube 120 is the largest, and the outer wall area of ​​the condenser tube 120 is relatively larger than that of the superheater tube 110 and the subcooler tube 130. This increases the contact area between the coolant in the condenser tube 120 and the sprayed water film and air in the evaporator-condenser 10, thereby increasing the mass and heat transfer efficiency between the coolant in the condenser tube 120 and the sprayed water film and air in the evaporator-condenser 10. In addition, the increased heat exchange area inside the condenser tube 120 reduces the refrigerant flow rate inside the condenser tube 120, further increasing the heat exchange between the sprayed water film and the refrigerant inside the condenser tube 120, thereby improving the heat exchange efficiency of the evaporator-condenser 10.

[0038] Furthermore, the spray water assembly 300 in the evaporator-condenser 10 sprays water from top to bottom. The presence of the superheater tube 110 affects the contact between the condenser tube 120 and the spray water. The spray water absorbs heat from the superheater tube 110 and the condenser tube 120, causing its temperature to rise. The higher the temperature of the spray water, the easier it is for scale to form and adhere to the outer walls of the superheater tube 110 and the condenser tube 120. In this embodiment, by improving the heat exchange efficiency of the condenser tube 120, the wall temperature of the superheater tube 110 and the condenser tube 120 during the heat exchange process can be effectively reduced, making scale less likely to condense. Simultaneously, by reducing the diameter of the superheater tube 110, the impact of the superheater tube 110 on the contact between the condenser tube 120 and the spray water can be reduced, improving the utilization rate of the spray water.

[0039] In addition, the evaporator-condenser 10 includes a fan 200 for driving airflow and forming a certain fan 200, such as Figure 1 As shown, Figure 1 The arrows in the diagram indicate the direction of airflow. An evaporative condenser 10 with airflow in the same direction as the spray water is called a co-current evaporative condenser 10, and an evaporative condenser 10 with airflow in the opposite direction to the spray water is called a counter-current evaporative condenser 10 (not shown). In existing co-current evaporative condensers, because the superheater, condenser, and subcooler tubes have the same diameter, the subcooling section has a higher air velocity, resulting in a higher drift rate (the ratio of water discharged from the top of the cooling tower to the total circulating water within the tower in a given time) compared to counter-current evaporative condensers. In this embodiment, by reducing the diameter of the subcooler tube 130, the total cross-sectional area of ​​the airflow channel remains unchanged for the co-current evaporative condenser 10. This effectively reduces the air velocity exiting the co-current evaporative condenser. Lowering the air velocity reduces the amount of unevaporated water mist carried out of the co-current evaporative condenser 10 due to excessive airflow, thereby reducing the drift rate and the amount of makeup water required.

[0040] It is understood that the number of superheating pipes 110, condensing pipes 120, and subcooling pipes 130 can be one or more. This application does not impose any restrictions on this. The superheating pipes 110, condensing pipes 120, and subcooling pipes 130 are arranged sequentially along the height of the evaporator-condenser 10, and the coil 100 is generally wavy. After the refrigerant enters the superheating pipes 110 of the coil 100, due to the wavy shape of the coil 100, the flow direction of the refrigerant changes when flowing from the superheating pipes 110 into the condensing pipes 120. Similarly, the flow direction of the refrigerant also changes when flowing from the condensing pipes 120 into the subcooling pipes 130. This reduces the volume of the coil 100, improves its versatility, and allows for a tighter fit between the coil 100 and other components in the evaporator-condenser 10, further reducing the volume of the evaporator-condenser 10 and thus lowering costs.

[0041] In illustrative purposes, the diameter of the superheater pipe 110 and the diameter of the subcooler pipe 130 may be the same or different, and this application does not impose any restrictions on this; the length of the superheater pipe 110 and the length of the subcooler pipe 130 may be the same or different, and this application does not impose any restrictions on this.

[0042] In one embodiment, the total length of the superheater pipe 110 accounts for 10% to 15% of the total length of the coil 100. If the total length of the superheater pipe 110 accounts for less than 10% of the total length of the coil 100, the gaseous refrigerant does not release heat to the point where it can just condense, affecting the condensation of the gaseous refrigerant in the condenser pipe 120. If the total length of the superheater pipe 110 accounts for more than 15% of the total length of the coil 100, the superheater pipe 110 is not only too long, increasing manufacturing costs, but also delaying the condensation efficiency of the gaseous refrigerant in the condenser pipe 120. Therefore, a total length of 10% to 15% of the total length of the superheater pipe 110 is very suitable. In this way, it can be ensured that the gaseous refrigerant releases heat to the point where it can condense, and the total length of the superheater pipe 110 is not too long. Furthermore, the total length of the superheater pipe 110 can also account for 11%, 12%, 13%, 14% of the total length of the coil 100, or any combination of these values.

[0043] In one embodiment, the total length of the subcooling pipe 130 accounts for 5% to 10% of the total length of the coil 100. If the total length of the subcooling pipe 130 accounts for less than 5% of the total length of the coil 100, the refrigerant cannot be sufficiently cooled, and vaporization may occur when the refrigerant flows out of the subcooling pipe 130. If the total length of the subcooling pipe 130 accounts for more than 10% of the total length of the coil 100, with a fixed total length of the coil 100, the excessively long subcooling pipe 130 wastes heat exchange area, thereby affecting the heat exchange efficiency of the evaporator-condenser 10. Therefore, a total length of 5% to 10% of the total length of the subcooling pipe 130 is appropriate. In this way, the refrigerant can be cooled without affecting the heat exchange area of ​​the coil 100. Furthermore, the total length of the subcooling pipe 130 can also account for 6%, 7%, 8%, 14%, 9% of the total length of the coil 100, or any combination of these values.

[0044] In one embodiment, the superheated tube 110 includes at least one superheated section 111 extending along the length of the evaporator-condenser 10, the condenser tube 120 includes at least one condensing section 121 extending along the length of the evaporator-condenser 10, and the subcooled tube 130 includes at least one subcooled section 131 extending along the length of the evaporator-condenser 10. The total number of superheated sections 111, condensing sections 121, and subcooled sections 131 is 10 to 20. Thus, the volume of the coil 100 is adapted to existing evaporator-condensers 10, improving the versatility of the coil 100.

[0045] It should be noted that, with Figure 2 Taking the dotted line as an example, the superheated section 111 is a straight pipe segment, referring to the part of the superheated pipe 110 that does not change direction. Adjacent superheated sections 111 are connected by a bend. The refrigerant flows in the same direction in a certain superheated section 111 without changing direction. When the refrigerant flows into an adjacent superheated section 111, the flow direction changes, causing the refrigerant flow direction between adjacent subcooled sections 131 to be different. Taking a superheated pipe 110 using a U-shaped bend as an example, the flow direction changes once in this superheated pipe 110, and the number of superheated sections 111 is two. The definitions of condensing section 121 and subcooled section 131 are the same as those of superheated section 111, and will not be described again.

[0046] Furthermore, the number of superheated sections 111 is 2 to 3, which ensures that the gaseous refrigerant can release heat to the point where it can condense, while the total length of the superheated pipes 110 is not too long.

[0047] Furthermore, there are one or two subcooling sections 131, which can cool the coolant without affecting the heat exchange area of ​​the coil 100.

[0048] In one embodiment, there are at least two superheated sections 111, arranged at intervals along the height direction of the evaporator-condenser 10, with adjacent superheated sections 111 connected by a first connecting section 112. That is, the superheated tube 110 is formed by connecting adjacent superheated sections 111 via the first connecting section 112. This allows for a more compact structure of the superheated tube 110, which in turn makes the coil 100 more compact, saving space in the evaporator-condenser 10. Illustratively, the superheated tube 110 can also be a U-shaped tube, a corrugated tube, etc., and this application does not impose any limitations on this.

[0049] In one embodiment, there are at least two condensing sections 121, arranged at intervals along the height direction of the evaporator-condenser 10, with adjacent condensing sections 121 connected by a second connecting section 122. That is, the condensing tube 120 is formed by connecting adjacent condensing sections 121 via the second connecting section 122. Thus, while meeting the requirements for condensing the refrigerant, the structure of the condensing tube 120 can be made more compact, thereby making the coil 100 more compact and saving space in the evaporator-condenser 10. Illustratively, the condensing tube 120 can also be a U-shaped tube, a corrugated tube, etc., and this application does not impose any limitations on this.

[0050] In one embodiment, there are two subcooling sections 131, which are spaced apart along the height of the evaporator-condenser 10, and the two subcooling sections 131 can be connected by a third connecting section. Alternatively, the subcooling pipe 130 can be a U-shaped pipe.

[0051] In one embodiment, the outer wall diameter of the condenser tube 120 is 9 mm to 16 mm. This ensures a suitable refrigerant flow rate in the condenser tube 120. Further, the outer wall diameter of the condenser tube 120 can also be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, or any combination of these values.

[0052] Furthermore, the outer wall diameter of the superheater pipe 110 is 40% to 60% of the outer wall diameter of the condenser pipe 120, thus preventing excessive refrigerant flow rate in the superheater pipe 110. Further, the outer wall diameter of the superheater pipe 110 is also within a range of 45%, 50%, 55% of the outer wall diameter of the condenser pipe 120, or any combination of these values.

[0053] Furthermore, the outer diameter of the subcooling pipe 130 is 40% to 60% of the outer diameter of the condenser pipe 120. This prevents excessive refrigerant flow rate in the subcooling pipe 130. Furthermore, the outer diameter of the superheating pipe 110 is also within a range of 45%, 50%, 55% of the outer diameter of the condenser pipe 120, or any combination of these values.

[0054] In one embodiment, the condenser tube 120 and the superheater tube 110 are connected by a reducing elbow. This reduces the need to reduce the size of the end of the condenser tube 120 used to connect with the superheater tube 110, nor to enlarge the end of the heating tube used to connect with the condenser tube 120. Thus, the connection method of the coil 100 is the simplest and lowest cost.

[0055] In another embodiment, the end of the superheater pipe 110 used to connect with the condenser pipe 120 is a first flared end 113, and the cross-sectional area of ​​the first flared end 113 is equal to the cross-sectional area of ​​the condenser pipe 120. In this way, the smaller-diameter superheater pipe 110 can smoothly connect with the larger-diameter condenser pipe 120, preventing coolant leakage from the connection point between the superheater pipe 110 and the condenser pipe 120 due to the difference in pipe diameter. It should be explained that the position of the superheater pipe 110 adjacent to the first flared end 113 is the first position, the pipe diameter at the first position is the same as the diameter of the superheater pipe 110, and the pipe diameter of the superheater pipe 110 is uniform except for the first flared end 113. The cross-sectional area of ​​the first flared end 113 is larger than the cross-sectional area of ​​the first position.

[0056] In one embodiment, the end of the condenser tube 120 that connects to the superheater tube 110 is a first constricted end, and the cross-sectional area of ​​the first constricted end is equal to the cross-sectional area of ​​the superheater tube 110. This allows the large-diameter condenser tube 120 to smoothly connect with the small-diameter superheater tube 110, preventing coolant leakage at the connection point due to the difference in tube diameter. It should be noted that the position of the condenser tube 120 adjacent to the first constricted end is the second position, where the tube diameter is the same as that of the condenser tube 120. Furthermore, the diameter of the superheater tube 110 is uniform except at the second constricted end, and the cross-sectional area of ​​the first constricted end is smaller than that of the second position.

[0057] In one embodiment, the condenser pipe 120 and the subcooling pipe 130 are connected via a reducing elbow. Connecting the condenser pipe 120 and the subcooling pipe 130, which have different diameters, via a reducing elbow eliminates the need to reduce the size of the end of the condenser pipe 120 used to connect to the subcooling pipe 130, nor to enlarge the end of the subcooling pipe 130 used to connect to the condenser pipe 120. Thus, the connection method for the coil 100 is the simplest and lowest cost.

[0058] In another embodiment, the end where the subcooling pipe 130 connects to the condenser pipe 120 is a second flared end 132, and the cross-sectional area of ​​the second flared end 132 is equal to that of the condenser pipe 120. This allows the smaller-diameter subcooling pipe 130 to smoothly connect with the larger-diameter condenser pipe 120, preventing coolant leakage at the connection point due to the difference in pipe diameter. It should be noted that the position of the subcooling pipe 130 adjacent to the second flared end 132 is the third position. The pipe diameter at the third position is the same as that of the subcooling pipe 130, and the diameter of the subcooling pipe 130 is uniform except for the second flared end 132. The cross-sectional area of ​​the second flared end 132 is larger than that of the third position.

[0059] In another embodiment, the end of the condenser tube 120 used to connect with the subcooling tube 130 is a second constricted end, and the cross-sectional area of ​​the second constricted end is equal to that of the subcooling tube 130. In this way, the large-diameter condenser tube 120 can smoothly connect with the small-diameter subcooling tube 130, preventing coolant leakage from the connection between the superheater tube 110 and the condenser tube 120 due to the difference in tube diameter. It should be explained that the position of the condenser tube 120 adjacent to the second constricted end is the second position, the tube diameter at the second position is the same as that of the condenser tube 120, and the diameter of the superheater tube 110 is uniform except for the second constricted end; the cross-sectional area of ​​the second constricted end is smaller than that of the second position.

[0060] Furthermore, the condenser tube 120 is provided with a first constricted end and a second constricted end, and the diameter of the superheater tube 110 is the same as the diameter of the supercooler tube 130. Therefore, the cross-sectional area of ​​the first constricted end is the same as the cross-sectional area of ​​the second constricted end. This simplifies the production process of the condenser tube 120 and saves costs.

[0061] In one embodiment, such as Figure 3 As shown, the coil 100 also includes a gas distribution pipe 140 and a liquid collection pipe 150. Both ends of the coil 100 are connected to the gas distribution pipe 140 and the liquid collection pipe 150. Along the direction of gravity, the gas distribution pipe 140 is positioned above the liquid collection pipe 150. The gas distribution pipe 140 has at least one gas outlet, which is connected to the end of the superheated pipe 110 away from the condenser pipe 120 for the inflow of refrigerant into the coil 100. The liquid collection pipe 150 has at least one liquid collection outlet, which is connected to the end of the subcooled pipe 130 away from the condenser pipe 120 for the outflow of refrigerant into the coil 100. Specifically, the number of gas outlets can be one, two, or more, and the number of liquid collection outlets can be one, two, or more, etc., without limitation. Similarly, the number of gas distribution pipes 140 and liquid collection pipes 150 can also be two or more.

[0062] In one embodiment, such as Figure 3As shown, the coil 100 also includes an end plate 160 and a side plate 170. Along the axial direction of the superheater tube 110, the heat exchange tube, condenser tube 120, and subcooler tube 130 are all mounted on and pass through the end plate 160. The side plate 170 is perpendicular to the end plate 160 and is arranged on both sides of the length of the superheater tube 110, increasing the structural stability of the coil 100.

[0063] like Figure 4 As shown, this application also proposes an air conditioner 1, including the evaporator-condenser 10 described in any of the above embodiments. The air conditioner 1 further includes a compressor 20, an evaporator 30, and a throttling device 40, with the condenser, compressor 20, evaporator 30, and throttling device 40 connected sequentially via pipes. Specifically, the superheating pipe 110 of the evaporator-condenser 10 is connected to the compressor 20 through the gas distribution port of the gas distribution pipe 140, and the subcooling pipe 130 of the evaporator-condenser 10 is connected to the throttling device 40 through the liquid collection port of the liquid collection pipe 150. Because the superheating pipe 110 and subcooling pipe 130 have small diameters, and the condenser pipe 120 has a large diameter, the heat exchange efficiency of this evaporator-condenser 10 is high, thereby improving the heat exchange efficiency of the air conditioner 1.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An evaporative condenser, characterized in that, The device includes a serpentine coil (100), which includes a superheated tube (110), a condenser tube (120), and a subcooled tube (130) connected in sequence. The superheated tube (110), the condenser tube (120), and the subcooled tube (130) are arranged in sequence along the height direction of the evaporator-condenser. The diameter of the condenser tube (120) is larger than the diameter of the superheated tube (110), and the diameter of the condenser tube (120) is larger than the diameter of the subcooled tube (130).

2. The evaporator-condenser according to claim 1, characterized in that, The total length of the superheated tube (110) accounts for 10% to 15% of the total length of the coil (100) assembly.

3. The evaporator-condenser according to claim 1 or 2, characterized in that, The total length of the subcooling tube (130) accounts for 5% to 10% of the total length of the coil (100) assembly.

4. The evaporator-condenser according to claim 3, characterized in that, The superheated tube (110) includes at least one superheated section (111) extending along the length of the evaporator-condenser, the condenser tube (120) includes at least one condensing section (121) extending along the length of the evaporator-condenser, and the subcooled tube (130) includes at least one subcooled section (131) extending along the length of the evaporator-condenser. The total number of the superheated section (111), the condensing section (121), and the subcooled section (131) is 10 to 20.

5. The evaporator-condenser according to claim 4, characterized in that, There are at least two superheated sections (111), which are arranged at intervals along the height direction of the evaporator condenser, and two adjacent superheated sections (111) are connected by a first connecting section (112). And / or, there are at least two condensing sections (121) and they are arranged at intervals along the height direction of the evaporator condenser, with adjacent two condensing sections (121) connected by a second connecting section (122).

6. The evaporator-condenser according to claim 3, characterized in that, The outer diameter of the condenser tube (120) is 9 mm to 16 mm; The outer diameter of the superheater tube (110) is 40% to 60% of the outer diameter of the condenser tube (120). And / or, the outer wall diameter of the subcooling tube (130) is 40% to 60% of the outer wall diameter of the condenser tube (120).

7. The evaporator-condenser according to any one of claims 1, 2, 4, and 5, characterized in that, The outer diameter of the condenser tube (120) is 9 mm to 16 mm; The outer diameter of the superheater tube (110) is 40% to 60% of the outer diameter of the condenser tube (120). And / or, the outer wall diameter of the subcooling tube (130) is 40% to 60% of the outer wall diameter of the condenser tube (120).

8. The evaporator-condenser according to claim 1, characterized in that, The condenser (120) and the superheater (110) are connected by a reducing elbow; And / or, the condenser (120) and the subcooler (130) are connected by a reducing elbow.

9. The evaporator-condenser according to claim 1, characterized in that, The end where the superheater tube (110) connects to the condenser tube (120) is a first flared end (113), and the cross-sectional area of ​​the first flared end (113) is equal to the cross-sectional area of ​​the condenser tube (120). Alternatively, the end where the condenser tube (120) connects to the superheater tube (110) is a first constricted end, and the cross-sectional area of ​​the first constricted end is equal to the cross-sectional area of ​​the superheater tube (110).

10. The evaporator-condenser according to claim 1 or 9, characterized in that, The end where the subcooling tube (130) connects to the condenser tube (120) is a second flared end (132), and the cross-sectional area of ​​the second flared end (132) is equal to the cross-sectional area of ​​the condenser tube (120). Alternatively, the end where the condenser tube (120) connects to the subcooling tube (130) is a second constricted end, and the cross-sectional area of ​​the second constricted end is equal to the cross-sectional area of ​​the subcooling tube (130).

11. An air conditioner, characterized in that, Includes the evaporator-condenser as described in any one of claims 1 to 10.

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