Dry-type evaporator and air conditioner

Abstract

The invention discloses a dry-type evaporator and an air conditioner. The dry-type evaporator comprises an end cover, a liquid inlet pipe, a pipe plate and a liquid homogenizing plate. Wherein the end cover is provided with a liquid inlet hole and a containing cavity, and the liquid inlet hole is communicated with the containing cavity; the liquid inlet pipe penetrates through the liquid inlet hole and is communicated with the accommodating cavity; the tube plate is connected with the end cover; the liquid homogenizing plate is arranged in the containing cavity, a bent position is formed on the liquid homogenizing plate, the bent position corresponds to an outlet of the liquid inlet pipe in the axial direction of the liquid inlet pipe, and the bent position protrudes towards the direction of the liquid inlet pipe relative to the pipe plate. The bending part formed on the liquid homogenizing plate deviates from the tube plate, protrudes towards the liquid inlet tube and corresponds to the outlet of the liquid inlet tube, so that two-phase refrigerants flowing out of the outlet of the liquid inlet tube can be equally divided by the bending part, the flowing resistance of the bending part is increased, the two-phase refrigerants can flow to the periphery of the tube plate, and the liquid homogenizing effect of the liquid homogenizing plate is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and more specifically, to a dry evaporator and an air conditioner. Background Technology

[0002] In related technologies, when the two-phase refrigerant, after being throttled, flows into the tube side from the end cap of a dry evaporator, it can be dispersed and distributed to the pipes connected to the tube sheet through a distribution plate between the end cap and the tube sheet. Currently, the distribution plate is mostly planar with evenly distributed distribution holes. This results in lower flow resistance for the two-phase refrigerant in the middle of the distribution plate, causing most of the refrigerant to enter the pipes from the middle, leaving less refrigerant dispersed around the perimeter, leading to poor distribution. Summary of the Invention

[0003] This application provides a dry evaporator and an air conditioner that can solve or improve the technical problem of poor liquid distribution effect of the planar liquid distribution plate in the dry evaporator.

[0004] A dry evaporator according to an embodiment of this application includes an end cap, an inlet pipe, a tube sheet, and a liquid equalization plate. The end cap has an inlet hole and a receiving cavity, the inlet hole communicating with the receiving cavity; the inlet pipe passes through the inlet hole and communicates with the receiving cavity; the tube sheet is connected to the end cap; the liquid equalization plate is disposed within the receiving cavity, and the liquid equalization plate has a bend, the bend corresponding axially to the outlet of the inlet pipe, and the bend protruding towards the inlet pipe relative to the tube sheet.

[0005] In this way, by forming a bend on the equalization plate that protrudes away from the tube sheet and towards the inlet pipe, and corresponds to the outlet of the inlet pipe, the two-phase refrigerant flowing out of the outlet of the inlet pipe can be evenly distributed by the bend, and the flow resistance at the bend is increased, so that the two-phase refrigerant can flow to the periphery of the tube sheet, thereby improving the equalization effect of the equalization plate.

[0006] In some embodiments, the height of the liquid equalization plate is greater than the diameter of the inlet pipe and less than the height of the tube sheet, and the length of the liquid equalization plate is greater than the diameter of the inlet pipe and less than the length of the tube sheet.

[0007] Thus, by setting the height and length of the equalization plate to be greater than the diameter of the inlet pipe, the two-phase refrigerant flowing out of the inlet pipe can enter the equalization plate. By setting the length and height of the equalization plate to be less than the length and height of the tube sheet, the two-phase refrigerant can enter the edge of the tube sheet after being equalized by the equalization plate, thereby avoiding the two-phase refrigerant from directly entering the tube sheet and causing poor equalization effect.

[0008] In some embodiments, the liquid equalization plate is provided with a plurality of liquid equalization holes, and the density of the liquid equalization holes gradually increases in the radial direction of the liquid inlet pipe, away from the liquid inlet pipe.

[0009] Thus, by setting multiple equalization holes on the equalization plate, the two-phase refrigerant can flow out from multiple equalization holes to different positions on the tube sheet. In addition, the density of the equalization holes gradually increases in the radial direction away from the liquid inlet pipe, which can balance the flow resistance of the equalization plate and allow the two-phase refrigerant to flow to the edge of the equalization plate, thereby improving the equalization effect.

[0010] In some embodiments, the shape of the liquid equalization holes includes round holes, square holes, or irregularly shaped holes, and the spacing between the liquid equalization holes includes uniform spacing or non-uniform spacing.

[0011] Thus, by setting the shape of the liquid distribution holes to round, square, or irregular shapes, the requirement for uniform flow of the two-phase refrigerant can be met. Furthermore, setting the hole spacing of the liquid distribution holes to uniform or non-uniform spacing can balance the flow resistance of the liquid distribution plate and improve its liquid distribution effect.

[0012] In some embodiments, the plurality of liquid equalization holes are arranged in a horizontal, staggered, or combined horizontal and staggered arrangement.

[0013] In this way, by arranging multiple equalization holes in a horizontal, staggered, or combined horizontal and staggered arrangement, the flow resistance of the two-phase refrigerant in the middle and both sides of the equalization plate can be balanced, thereby achieving uniform distribution of the two-phase refrigerant in the tube sheet.

[0014] In some embodiments, the diameter of the equalization orifice is greater than or equal to 1 mm and less than or equal to 5 mm.

[0015] In this way, by making the diameter of the equalization holes greater than or equal to 1 mm and less than or equal to 5 mm, the flow rate of the two-phase refrigerant through the equalization plate can be controlled to balance the flow resistance of the two-phase refrigerant in the middle and on both sides of the equalization plate.

[0016] In some embodiments, the inlet pipes include multiple sections, and the equalization plate includes multiple bends, each bend corresponding to the outlet of an inlet pipe.

[0017] In this way, by aligning the outlet of each inlet pipe with the bend of the liquid distribution plate, the two phases of refrigerant flowing out of the inlet pipe can be split, thereby improving the liquid distribution effect of the liquid distribution plate.

[0018] In some embodiments, the tube sheet includes outlets that communicate with the receiving cavity and are staggered, and the equalizing plate covers the outlets in the middle region of the tube sheet.

[0019] In this way, by covering the staggered outlets in the middle area of ​​the tube sheet with the equalization plate, the two-phase refrigerant flowing out of the equalization plate can be evenly distributed into the outlet.

[0020] In some embodiments, the equalization plate includes a first part and a second part, which are connected by the bend, and the included angle between the first part and the second part is an acute angle or an obtuse angle.

[0021] Thus, by connecting the first and second parts of the equalization plate to form acute and obtuse angles at the bends, the two phases of refrigerant can flow to the edge of the tube sheet during the equalization process, thereby improving the refrigerant equalization effect.

[0022] An air conditioner according to an embodiment of this application includes the dry evaporator described in any of the above embodiments.

[0023] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of a dry evaporator according to certain embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the structure of the inlet pipe, tube sheet and liquid equalization plate in some embodiments of this application;

[0027] Figures 3 to 5 This is a schematic diagram of the structure of the liquid distribution plate in some embodiments of this application;

[0028] Figure 6 This is a schematic diagram of the structure of the liquid inlet pipe and the liquid equalization plate in some embodiments of this application;

[0029] Figure 7 This is a schematic diagram of the structure of the inlet pipe, tube sheet and liquid equalization plate in some embodiments of this application;

[0030] Figure 8 This is a schematic diagram of the structure of the liquid inlet pipe and the liquid equalization plate in some embodiments of this application.

[0031] Explanation of icon numbers:

[0032] 100. Dry evaporator; 10. End cap; 11. Liquid inlet hole; 12. Receiving cavity; 20. Liquid inlet pipe; 30. Tube sheet; 31. Liquid outlet; 40. Liquid distribution plate; 41. Bend; 42. Liquid distribution hole; 43. First part; 44. Second part; 50. Heat exchange tube. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being 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 includes the first feature being 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.

[0037] This disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of this application. 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. Additionally, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] Please see Figure 1 and Figure 2 A dry evaporator 100 according to an embodiment of this application includes an end cap 10, an inlet pipe 20, a tube sheet 30, and a liquid distribution plate 40. The end cap 10 has an inlet hole 11 and a receiving cavity 12, with the inlet hole 11 communicating with the receiving cavity 12. The inlet pipe 20 passes through the inlet hole 11 and communicates with the receiving cavity 12. The tube sheet 30 is connected to the end cap 10. The liquid distribution plate 40 is disposed within the receiving cavity 12 and has a bend 41. The bend 41 corresponds axially to the outlet of the inlet pipe 20, and the bend 41 protrudes towards the inlet pipe 20 relative to the tube sheet 30.

[0039] Thus, by making the bend 41 formed on the equalizing plate 40 protrude away from the tube sheet 30 toward the inlet pipe 20 and correspond to the outlet of the inlet pipe 20, the two-phase refrigerant flowing out of the outlet of the inlet pipe 20 can be evenly distributed by the bend 41, and the flow resistance of the bend 41 is increased, so that the two-phase refrigerant can flow to the periphery of the tube sheet 30, thereby improving the equalizing effect of the equalizing plate 40.

[0040] The air conditioner includes a dry evaporator 100, also known as a direct expansion evaporator. Two-phase refrigerant flows inside heat exchange tubes 50, while a secondary refrigerant (such as water or air) flows outside. This causes the two-phase refrigerant to continuously evaporate within the heat exchange tubes 50, absorbing heat from the secondary refrigerant outside, thus achieving the cooling purpose of the air conditioner. The two-phase refrigerant is formed by a mixture of gaseous and liquid refrigerant.

[0041] Specifically, the dry evaporator 100 includes an end cap 10, an inlet pipe 20, a tube sheet 30, and a liquid distribution plate 40. The end cap 10 is used to seal and secure the heat exchange tubes 50, preventing refrigerant leakage. For example, the end cap 10 can be connected to the outer shell of the dry evaporator 100 to seal the space formed by the shell, thereby ensuring pressure stability within the space. It should be noted that the heat exchange tubes 50 can accommodate two-phase refrigerant that exchanges heat with the refrigerant, which can be chilled water. The heat exchange tubes 50 are horizontally mounted on the inner wall of the shell, with one end passing through the tube sheet 30 and communicating with the receiving cavity 12, and the other end exiting from the other end cap 10. The heat exchange tubes 50 need to be submerged in the refrigerant within the space formed by the shell, allowing for sufficient heat exchange between the refrigerant and the two-phase refrigerant in the heat exchange tubes 50. The heat exchange tube 50 should be made of corrosion-resistant and thermally conductive materials, such as stainless steel or copper alloy, to ensure that the heat exchange tube 50 will not be damaged during long-term immersion and frequent evaporation of refrigerant, thereby maintaining the stability of the heat exchange tube 50 and improving its service life.

[0042] The end cap 10 has a liquid inlet hole 11 on its end face and a receiving cavity 12 inside the end cap 10. The liquid inlet hole 11 is used to fix the liquid inlet pipe 20 that transports the two-phase refrigerant, and the receiving cavity 12 is used to receive the two-phase refrigerant flowing out of the liquid inlet pipe 20. Furthermore, the liquid inlet hole 11 communicates with the receiving cavity 12, allowing the liquid inlet pipe 20 to extend into the receiving cavity 12, thereby delivering the two-phase refrigerant from the liquid inlet pipe 20 to the receiving cavity 12.

[0043] The tube sheet 30 can be fixedly connected to the end cap 10, and the tube sheet 30 is provided with multiple liquid outlets 31, so that the heat exchange tube 50 can be inserted into the liquid outlets 31, so that the tube sheet 30 can be used to fix the heat exchange tube 50, and then the two-phase refrigerant in the receiving cavity 12 can enter the heat exchange tube 50 for heat exchange.

[0044] A liquid equalization plate 40 is disposed within the receiving cavity 12 and located between the end cap 10 and the tube sheet 30. The liquid equalization plate 40 can be fixedly connected to the tube sheet 30, so that the inlet pipe 20 is directly facing the liquid equalization plate 40. This allows the two-phase refrigerant flowing out of the inlet pipe 20 to flow onto the liquid equalization plate 40, thereby enabling the liquid equalization plate 40 to separate the two-phase refrigerant flowing out of the inlet pipe 20. The liquid equalization plate 40 has a bend 41, which protrudes towards the inlet pipe 20 relative to the tube sheet 30. The shape of the bend 41 can be V-shaped, W-shaped, wavy, etc. Furthermore, the bend 41 can correspond to the outlet of the inlet pipe 20 axially. For example, the bend 41 can be connected to the axis of symmetry of the inlet pipe 20, thus allowing the bend 41 to evenly distribute the outlet of the inlet pipe 20.

[0045] Please see Figure 2In some embodiments, the height of the equalization plate 40 is greater than the diameter of the inlet pipe 20 and less than the height of the tube sheet 30, and the length of the equalization plate 40 is greater than the diameter of the inlet pipe 20 and less than the length of the tube sheet 30.

[0046] Thus, by setting the height and length of the equalization plate 40 to be greater than the diameter of the inlet pipe 20, the two-phase refrigerant flowing out of the inlet pipe 20 can enter the equalization plate 40. By setting the length and height of the equalization plate 40 to be less than the length and height of the tube sheet 30, the two-phase refrigerant can enter the edge of the tube sheet 30 after being equalized by the equalization plate 40, thereby avoiding the two-phase refrigerant from directly entering the tube sheet 30 and causing poor equalization effect.

[0047] Specifically, the dimensions of the equalization plate 40 need to be determined based on the diameter of the inlet pipe 20 and the height of the tube sheet 30. For example, the height h and length L1 of the equalization plate 40 need to be set to be greater than the diameter D of the inlet pipe 20, so that all the two-phase refrigerant flowing out of the inlet pipe 20 can be received and separated by the equalization plate 40, preventing the two-phase refrigerant that has not been separated from directly entering the heat exchange tubes 50 on the tube sheet 30; the height h of the equalization plate 40 needs to be set to be less than the height H of the tube sheet 30, and the length L1 of the equalization plate 40 needs to be set to be less than the length L2 of the tube sheet 30, so that the two-phase refrigerant separated by the equalization plate 40 can flow to different positions on the tube sheet 30, preventing the two-phase refrigerant from flowing outside the tube sheet 30.

[0048] Please see Figure 3 In some embodiments, the liquid distribution plate 40 is provided with a plurality of liquid distribution holes 42, and the density of the liquid distribution holes 42 gradually increases in the radial direction of the liquid inlet pipe 20 and in the direction away from the liquid inlet pipe 20.

[0049] Thus, by setting multiple equalization holes 42 on the equalization plate 40, the two-phase refrigerant can flow out from the multiple equalization holes 42 to different positions on the tube sheet 30. In addition, the density of the equalization holes 42 gradually increases in the radial direction away from the liquid inlet pipe 20, which can balance the flow resistance of the equalization plate 40 and allow the two-phase refrigerant to flow to the edge of the equalization plate 40, thereby improving the equalization effect.

[0050] Specifically, the liquid distribution plate 40 is provided with liquid distribution holes 42. When two phases of refrigerant flow through the liquid distribution holes 42, the liquid distribution holes 42 can split the two phases of refrigerant. There can be multiple liquid distribution holes 42, which is not limited here. Multiple liquid distribution plates 40 can split the two phases of refrigerant separately, thereby achieving liquid distribution of the liquid distribution plate 40.

[0051] The density of the equalization holes 42 on the equalization plate 40 is determined by the relative position of the inlet pipe 20 and the equalization plate 40. For example, in the radial direction of the inlet pipe 20, that is, in the radial direction of the inlet pipe 20 or in the direction perpendicular to the axis of the inlet pipe 20, the density of the equalization holes 42 gradually increases away from the outlet of the inlet pipe 20. This increases the flow resistance of the equalization plate 40 corresponding to the outlet of the inlet pipe 20. The two-phase refrigerant flowing out of the outlet of the inlet pipe 20 will be blocked by the corresponding equalization plate 40, preventing the two-phase refrigerant from entering the tube sheet 30 at the first time. Thus, the two-phase refrigerant can flow into the edge of the tube sheet 30, improving the equalization effect of the equalization plate 40.

[0052] In some embodiments, the shape of the equalization holes 42 includes round holes, square holes, or irregular holes, and the hole spacing of the equalization holes 42 includes uniform spacing or non-uniform spacing.

[0053] Thus, by setting the shape of the liquid equalization hole 42 as a round hole, a square hole, or an irregular hole, the requirement for uniform flow of the two-phase refrigerant can be met. Furthermore, setting the hole spacing of the liquid equalization hole 42 as a uniform spacing or a non-uniform spacing can balance the flow resistance of the liquid equalization plate 40 and improve the liquid equalization effect of the liquid equalization plate 40.

[0054] Specifically, the shape of the equalizing hole 42 can affect the flow resistance of the equalizing plate 40. The shape of the equalizing hole 42 can be circular, square, or irregular. Among them, circular holes have more uniform flow characteristics, so the flow path of the fluid in the circular hole is relatively smooth, reducing the formation of eddies and turbulence, and thus reducing flow resistance. Square or irregular holes will generate eddies and turbulence during the flow process, increasing the collision and friction between the fluid and the hole wall, thereby increasing the flow resistance.

[0055] In some embodiments, the distribution holes 42 on the distribution plate 40 can be configured with the same shape. For example, the distribution holes 42 can be uniformly configured as round holes, square holes, or irregularly shaped holes, and the distribution effect of the distribution plate 40 can be improved by simulating and testing the flow resistance.

[0056] In some embodiments, the shape of the equalization holes 42 on the equalization plate 40 can be set to different shapes. For example, the shape of the equalization holes 42 near the outlet of the inlet hole 11 can be a square hole or an irregular hole with greater flow resistance, while the shape of the equalization holes 42 far from the outlet of the inlet hole 11 can be a round hole with less flow resistance. The flow resistance is tested by simulation to improve the equalization effect of the equalization plate 40.

[0057] Please see Figure 3 , Figure 4 and Figure 5 In some embodiments, the plurality of liquid equalization holes 42 are arranged in a horizontal, staggered, or combined horizontal and staggered arrangement.

[0058] In this way, by arranging multiple liquid equalization holes 42 in a horizontal, staggered, or combined horizontal and staggered arrangement, the flow resistance of the two-phase refrigerant in the middle and both sides of the liquid equalization plate 40 can be balanced, thereby achieving uniform flow of the two-phase refrigerant in the tube sheet 30.

[0059] Specifically, the arrangement of the multiple liquid distribution holes 42 on the liquid distribution plate 40 can be in a horizontal, staggered, or a combination of both. In some embodiments, such as... Figure 3 As shown, the distribution of multiple equalization holes 42 on the equalization plate 40 can be arranged in a horizontal array, so that the equalization holes 42 are arranged in an array along the length and height directions of the equalization plate 40, making the equalization holes 42 in each row and each column uniformly arranged on the same horizontal plane, and the number of equalization holes 42 in each row and each column is the same. In this way, the flow of the two-phase refrigerant can be made more uniform through the horizontal arrangement of the holes.

[0060] In some implementations, such as Figure 4 As shown, the distribution of multiple liquid equalization holes 42 on the liquid equalization plate 40 can be staggered, so that adjacent rows of liquid equalization holes 42 are staggered on different horizontal planes, and the number of liquid equalization holes 42 in adjacent rows can be different. In this way, the resistance to the flow of two-phase refrigerant can be reduced and the flow efficiency can be improved by using a staggered hole arrangement.

[0061] In some implementations, such as Figure 5 As shown, the distribution of multiple liquid equalization holes 42 on the liquid equalization plate 40 can be staggered. For example, the liquid equalization holes 42 near the inlet pipe 20 can be staggered, while the liquid equalization holes 42 away from the inlet pipe 20 can be arranged horizontally. This results in the liquid equalization holes 42 near the inlet pipe 20 being staggered on different horizontal planes, and the liquid equalization holes 42 away from the inlet pipe 20 being uniformly arranged on the same horizontal plane. In this way, uniform distribution and efficient flow of the two-phase refrigerant on the liquid equalization plate 40 can be achieved.

[0062] In some embodiments, the diameter of the equalization hole 42 is greater than or equal to 1 mm and less than or equal to 5 mm.

[0063] Thus, by making the diameter of the equalization hole 42 greater than or equal to 1 mm and less than or equal to 5 mm, the flow rate of the two-phase refrigerant through the equalization plate 40 can be controlled to balance the flow resistance of the two-phase refrigerant in the middle and on both sides of the equalization plate 40.

[0064] Specifically, the aperture size of the equalization hole 42 can affect the flow and distribution of the two-phase refrigerant. Specifically, the aperture size of the equalization hole 42 directly affects the flow velocity and flow rate of the two-phase refrigerant. When the aperture of the equalization hole 42 is greater than 5 mm, the flow velocity of the two-phase refrigerant may become uneven, with a faster flow velocity on the side of the equalization hole 42 closer to the inlet pipe 20 and a slower flow velocity on the side farther from the inlet pipe 20, resulting in uneven flow of the two-phase refrigerant on the equalization plate 40.

[0065] When the diameter of the equalization hole 42 is less than 1 mm, the flow resistance of the equalization hole 42 is too large, which affects the flow rate of the two-phase refrigerant and also affects the uneven distribution of the two-phase refrigerant flow.

[0066] By setting the aperture of the equalization hole 42 in the range of 1mm to 5mm, the two-phase refrigerant can pass through the equalization hole 42 relatively smoothly, without the flow being obstructed due to the aperture being too small, or the liquid distribution being uneven due to the aperture being too large.

[0067] In some embodiments, the aperture of the equalizing plate 42 can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm or any value between 1 mm and 5 mm.

[0068] Please see Figure 6 In some embodiments, the inlet pipe 20 includes multiple inlets, and the equalization plate 40 includes multiple bends 41, each bend 41 corresponding to an outlet of an inlet pipe 20.

[0069] In this way, by aligning the outlet of each liquid inlet pipe 20 with the bend 41 of the liquid distribution plate 40, the two-phase refrigerant flowing out of the liquid inlet pipe 20 can be split, thereby improving the liquid distribution effect of the liquid distribution plate 40.

[0070] Specifically, to improve heat exchange efficiency, the dry evaporator 100 can have multiple inlet pipes 20. For example, the number of inlet pipes 20 can be two or three. Multiple inlet pipes 20 can pass through the inlet hole 11 and communicate with the receiving cavity 12, simultaneously supplying two-phase refrigerant to the receiving cavity 12, thereby increasing the rate at which the two-phase refrigerant enters the heat exchange tube 50.

[0071] The liquid distribution plate 40 includes multiple bends 41, the number of bends 41 corresponding to the number of inlet pipes 20, so that each bend 41 corresponds to the outlet of an inlet pipe 20, so that the two phase refrigerants flowing out of the inlet pipe 20 can be diverted by the bends 41 of the liquid distribution plate 40, thereby improving the liquid distribution rate of the liquid distribution plate 40.

[0072] Please see Figure 7In some embodiments, the tube sheet 30 includes a liquid outlet 31 that communicates with the receiving cavity 12 and is staggered, and the liquid distribution plate 40 covers the liquid outlet 31 in the middle region of the tube sheet 30.

[0073] In this way, by covering the staggered outlets 31 in the middle region of the tube sheet 30 with the equalizing plate 40, the two-phase refrigerant flowing out of the equalizing plate 40 can be evenly introduced into the outlets 31.

[0074] Specifically, the tube sheet 30 is also provided with a liquid outlet 31, which can be used to fix the heat exchange tube 50 and connect the receiving cavity 12 and the heat exchange tube 50, so that the two-phase refrigerant in the receiving cavity 12 can enter the heat exchange tube 50 for heat exchange. Furthermore, the liquid distribution plate 40 can cover the liquid outlet 31 in the middle area of ​​the tube sheet 30, so that the two-phase refrigerant distributed by the liquid distribution plate 40 can flow to the edge of the tube sheet 30, improving the uniformity of the refrigerant entering the heat exchange tube 50.

[0075] like Figure 7 As shown, the outlets 31 are arranged in a staggered pattern on the tube sheet 30, so that the outlets 31 in adjacent rows are staggered on different horizontal planes, and the number of outlets in adjacent rows can be different. In this way, the staggered arrangement of the holes can make the two-phase refrigerant flow more uniform and improve the liquid distribution efficiency of the liquid distribution plate 40.

[0076] Please see Figure 7 and Figure 8 In some embodiments, the equalization plate 40 includes a first part 43 and a second part 44, which are connected by a bend 41, and the included angle between the first part 43 and the second part 44 is an acute angle or an obtuse angle.

[0077] Thus, by connecting the first part 43 and the second part 44 of the equalization plate 40 so that the bend 41 forms an acute angle and an obtuse angle, the two phases of refrigerant can flow to the edge side of the tube sheet 30 when the equalization plate 40 is equalizing the refrigerant, thereby improving the equalization effect of the refrigerant.

[0078] Specifically, the liquid distribution plate 40 is manufactured by integral molding or welding. The liquid distribution plate 40 includes a first part 43 and a second part 44, and the first part 43 and the second part 44 are connected by a bend 41.

[0079] When the liquid leveling plate 40 is manufactured by a one-piece molding process, a liquid leveling plate 40 can be bent to form a bend 41 by stamping, extrusion or molding processes. Thus, a first part 43 and a second part 44 can be formed on both sides of the bend 41, and the included angle α formed by the bend 41 is an obtuse angle or an acute angle, that is, the included angle α is greater than 0 degrees and less than 180 degrees.

[0080] When the liquid distribution plate 40 is manufactured by welding forming process, the first part 43 and the second part 44 are two separate liquid distribution plates 40. The first part 43 and the second part 44 are welded together to form a bend 41, and the included angle α formed between the first part 43 and the second part 44 is an acute angle or an obtuse angle, that is, the included angle α is greater than 0 degrees and less than 180 degrees.

[0081] In some implementations, such as Figure 8 The liquid leveling plate 40 can be W-shaped, with the included angle of the bend 41 formed by the first part 43 and the second part 44 being either acute or obtuse. Furthermore, the extended portions of the first part 43 and the second part 44 can form bends, and the included angle formed by these bends can be either acute or obtuse. This allows it to adapt to the size of the cavity 12 and strengthens the structural integrity of the liquid leveling plate 40, preventing it from being damaged by the high-pressure two-phase refrigerant.

[0082] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are optional and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A dry evaporator, characterized in that, include: An end cap, wherein the end cap is provided with a liquid inlet and a receiving cavity, and the liquid inlet is connected to the receiving cavity; A liquid inlet pipe, which passes through the liquid inlet hole and communicates with the receiving cavity; Tube sheet, wherein the tube sheet is connected to the end cap; A liquid equalization plate is disposed within the receiving cavity. The liquid equalization plate has a bend that corresponds to the outlet of the liquid inlet pipe in the axial direction of the liquid inlet pipe. The bend protrudes from the tube plate toward the liquid inlet pipe.

2. The dry evaporator according to claim 1, characterized in that, The height of the liquid equalization plate is greater than the diameter of the liquid inlet pipe and less than the height of the tube plate, and the length of the liquid equalization plate is greater than the diameter of the liquid inlet pipe and less than the length of the tube plate.

3. The dry evaporator according to claim 1, characterized in that, The liquid equalization plate is provided with a plurality of liquid equalization holes, and the density of the liquid equalization holes gradually increases in the radial direction of the liquid inlet pipe, away from the liquid inlet pipe.

4. The dry evaporator according to claim 3, characterized in that, The shape of the liquid equalization holes includes round holes, square holes, or irregularly shaped holes, and the hole spacing of the liquid equalization holes includes uniform spacing or non-uniform spacing.

5. The dry evaporator according to claim 3, characterized in that, The plurality of liquid equalization holes are arranged in a horizontal, staggered, or combined horizontal and staggered arrangement.

6. The dry evaporator according to claim 3, characterized in that, The diameter of the liquid equalization hole is greater than or equal to 1 mm and less than or equal to 5 mm.

7. The dry evaporator according to claim 1, characterized in that, The liquid inlet pipe includes multiple parts, and the liquid equalization plate includes multiple bends, each bend corresponding to the outlet of a liquid inlet pipe.

8. The dry evaporator according to claim 1, characterized in that, The tube sheet includes a liquid outlet, which is connected to the receiving cavity and is staggered. The liquid distribution plate covers the liquid outlet in the middle region of the tube sheet.

9. The dry evaporator according to claim 1, characterized in that, The equalization plate includes a first part and a second part, which are connected by the bend, and the included angle between the first part and the second part is an acute angle or an obtuse angle.

10. An air conditioner, characterized in that, Includes the dry evaporator as described in any one of claims 1-9.

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