Flash tank and air conditioning unit

Abstract

The invention provides a flash tank and an air conditioning unit. The flash tank comprises a tank body, a liquid blocking assembly, an anti-vortex assembly and a flow guide piece. The tank body is provided with a containing cavity. The liquid blocking assembly is installed in the containing cavity, and a steam storage chamber is defined by the liquid blocking assembly and the inner wall of the containing cavity. The anti-vortex assembly is installed in the containing cavity, and a liquid storage chamber is defined by the anti-vortex assembly and the inner wall of the containing cavity. The flow guide part is installed on the vortex prevention assembly, and a vapor-liquid separation chamber is defined by the flow guide part, the liquid blocking assembly, the vortex prevention assembly and the inner wall of the containing cavity. According to the flash tank, liquid is guided through the flow guide part, so that vapor-liquid two-phase separation of the liquid is achieved in the vapor-liquid separation chamber, the separated vapor collides with the liquid blocking assembly to effectively reduce the amount of liquid carried by the vapor, the separated liquid collides with the vortex prevention assembly to reduce the movement intensity of the liquid, steam channeling at the liquid return opening is avoided, and the safety of the flash tank is improved. In addition, the liquid level in the tank body does not need to be kept high, the liquid level does not need to be far away from the steam outlet and the liquid return opening, and the structural size and the control difficulty of the flash tank are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of vapor-liquid separation equipment, and in particular to a flash tank and air conditioning unit. Background Technology

[0002] In industrial production processes, flash tanks are key equipment for achieving rapid pressure reduction and flash evaporation of liquid media, separating vapor and liquid. Flash tanks primarily utilize a sudden pressure drop (i.e., "flash evaporation") to achieve rapid vaporization and vapor-liquid separation of liquid materials. Specifically, when a high-temperature, high-pressure liquid enters a lower-pressure container, due to the pressure reduction, some of the liquid evaporates due to overheating, forming a vapor phase and a liquid phase, which are then separated within the tank. However, in actual operation, flash tanks face two major challenges: liquid carryover in steam and steam leakage through backflow, seriously threatening system stability and equipment safety. When steam carries liquid, it significantly reduces steam quality, affecting subsequent utilization. Simultaneously, since the discharged liquid water is pumped back into the system for circulation, steam leakage through backflow can severely damage the pump, endangering system safety. Therefore, controlling the liquid level in the tank is particularly important.

[0003] To overcome the above problems, the liquid level of the flash tank in the prior art is far from the upper steam outlet and the bottom water return outlet, so its size is generally large. Moreover, due to the large amount of liquid flashing inside the tank, the internal movement is relatively violent, making it impossible to ensure the stability of the liquid level, which greatly increases the difficulty of system control. Summary of the Invention

[0004] Therefore, it is necessary to provide a flash tank and air conditioning unit to address the above problems.

[0005] The technical solution is as follows:

[0006] On the one hand, a flash evaporator is provided, comprising:

[0007] The tank body is provided with a receiving cavity, and a liquid inlet, a steam outlet and a liquid return outlet communicating with the receiving cavity. The steam outlet and the liquid return outlet are respectively located at the top and bottom of the receiving cavity.

[0008] A liquid-blocking assembly is installed inside the receiving cavity and forms a steam storage chamber with the inner wall of the receiving cavity on the side facing the steam outlet. The liquid-blocking assembly is provided with a communication port communicating with the steam storage chamber and is used to prevent liquid from entering the steam storage chamber.

[0009] An anti-vortex assembly is installed inside the receiving cavity and forms a liquid storage chamber with the inner wall of the receiving cavity on the side facing the return port. The anti-vortex assembly is provided with a communication hole communicating with the liquid storage chamber and is used to reduce the movement intensity of the liquid.

[0010] A flow guide is installed on the anti-vortex assembly and located between the liquid blocking assembly and the anti-vortex assembly. The flow guide is spaced apart from the inner wall of the receiving cavity and forms a vapor-liquid separation chamber with the liquid blocking assembly, the anti-vortex assembly and the inner wall of the receiving cavity. The vapor-liquid separation chamber is connected to the liquid inlet, the connecting port and the connecting hole.

[0011] The technical solution will be further explained below:

[0012] In one embodiment, the flow guide includes a connecting section fixedly connected to the anti-vortex assembly and a flow guide section connected to the top of the connecting section, wherein the liquid inlet is located outside the flow guide section so that the flow guide section can guide the liquid entering the vapor-liquid separation chamber from the liquid inlet.

[0013] In one embodiment, the outer diameter of the guide section gradually decreases along the direction close to the anti-vortex component.

[0014] In one embodiment, the flow guide further includes a liquid-blocking ring connected to the top of the flow guide section, the liquid-blocking ring being located above the liquid inlet and extending toward the outer wall of the vapor-liquid separation chamber.

[0015] In one embodiment, the anti-vortex assembly includes a first perforated plate, a connector, and at least one anti-vortex plate. The connector is fixedly installed on the first perforated plate and fixedly connected to the connecting section. The first perforated plate is fixedly installed on the inner wall of the receiving cavity and is provided with a plurality of the communicating holes. Each of the anti-vortex plates is located on the side of the first perforated plate away from the liquid storage chamber and is spaced apart on the first perforated plate around the axis of the connector. Both ends of each anti-vortex plate are respectively connected to the connector and the inner wall of the receiving cavity.

[0016] In one embodiment, at least a portion of the top of the anti-vortex plate is provided with at least one pointed cone, and the pointed cones on the same anti-vortex plate are arranged radially spaced along the joint.

[0017] In one embodiment, the anti-vortex assembly further includes a second perforated plate and at least one first support member. The second perforated plate is located on the side of the first perforated plate near the liquid storage chamber and is fixedly installed on the inner wall of the receiving cavity. The second perforated plate is spaced apart from the first perforated plate, and each of the first support members is spaced apart between the first perforated plate and the second perforated plate and is connected to the first perforated plate and the second perforated plate.

[0018] In one embodiment, the liquid-blocking assembly includes a liquid-guiding disc and a liquid-blocking plate. The liquid-guiding disc is fixedly installed on the inner wall of the receiving cavity and has the communication port. The liquid-guiding disc is inclined downward from its outer edge toward the communication port. The liquid-blocking plate is installed at intervals above the liquid-guiding disc and blocks the communication port.

[0019] In one embodiment, the guide member is provided with a guide hole communicating with the liquid storage chamber. The guide hole is located directly below the communication port and is used to guide liquid dripping from the communication port to the liquid storage chamber.

[0020] In one embodiment, the inner and / or outer walls of the liquid guiding plate are provided with transverse grooves and longitudinal grooves. The number of transverse grooves and the number of longitudinal grooves are both at least one. Each transverse groove is arranged in a ring shape and is sequentially spaced around the outer side of the communication port along the radial direction of the liquid guiding plate. Each longitudinal groove is spaced around the axis of the liquid guiding plate and communicates with each transverse groove. The two ends of each longitudinal groove extend to the outer edge of the liquid guiding plate and the inner wall of the communication port, respectively.

[0021] On the other hand, an air conditioning unit is also provided, including the aforementioned flash tank.

[0022] In the flash tank and air conditioning unit described in the above embodiments, during use, high-speed flowing liquid enters the vapor-liquid separation chamber through the inlet and collides with the guide vane and the inner wall of the receiving cavity, causing the liquid to spiral downwards along the guide vane, thus achieving vapor-liquid phase separation. The separated vapor moves upwards and impacts the liquid-blocking component to separate and intercept the small amount of liquid droplets carried in the vapor. The vapor is then discharged through the connecting port, the storage chamber, and the outlet, effectively reducing the amount of liquid carried by the vapor and improving the quality of the vapor. The separated liquid spirals downwards to the bottom of the vapor-liquid separation chamber and collides with the anti-vortex component, forcibly interrupting the rotational motion of the liquid and reducing the intensity of the liquid's movement. The liquid is then discharged through the connecting hole, the storage chamber, and the return port, realizing the transition of the liquid from a high-speed spiral motion state to a stable, non-rotating state. At the same time, the anti-vortex component can also effectively block the impact of the vapor flow in the vapor-liquid separation chamber on the liquid in the storage chamber, reducing the intensity of the liquid's movement within the tank and preventing backflow and vapor leakage at the return port, thereby improving the safety of the flash tank and air conditioning unit. This application uses a flow guide to direct the liquid entering the tank from the inlet, enabling vapor-liquid two-phase separation within the vapor-liquid separation chamber. The separated vapor collides with the liquid-blocking component to effectively reduce the amount of liquid carried by the vapor, improving vapor quality. Meanwhile, the separated liquid collides with the anti-vortex component to reduce the intensity of liquid movement. Simultaneously, the anti-vortex component effectively prevents the vapor flow in the vapor-liquid separation chamber from impacting the liquid in the storage chamber, avoiding vapor leakage at the return port and improving the safety of the flash tank and air conditioning unit. Furthermore, the liquid level in the tank does not need to be maintained at a high level, and its distance from both the vapor outlet and return port does not need to be large, significantly reducing the structural size of the flash tank, simplifying its control, and improving the practicality and reliability of the flash tank and air conditioning unit. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0025] Figure 1 This is a cross-sectional view of a flash tank according to one embodiment.

[0026] Figure 2 for Figure 1 A cross-sectional view of the flash tank from another perspective.

[0027] Figure 3 for Figure 1 A schematic diagram of the flow guide component in the diagram.

[0028] Figure 4 for Figure 1 A schematic diagram of the anti-vortex component in the diagram.

[0029] Figure 5 for Figure 1 A schematic diagram of the liquid-blocking component in the diagram.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Flash tank; 100. Tank body; 110. Receiving cavity; 111. Steam storage chamber; 112. Liquid storage chamber; 113. Vapor-liquid separation chamber; 121. Liquid inlet; 122. Steam outlet; 123. Liquid return port; 200. Liquid baffle assembly; 210. Liquid guide plate; 211. Connecting port; 212. Horizontal groove; 213. Vertical groove; 220. Liquid baffle plate; 230. Second support component; 300. Anti-vortex assembly; 310. First orifice plate; 311. Connecting hole; 320. Connector; 330. Anti-vortex plate; 331. Cone; 340. Second orifice plate; 350. First support component; 400. Flow guide component; 410. Connecting section; 420. Flow guide section; 430. Liquid baffle ring; 441. Flow guide hole. Detailed Implementation

[0032] 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.

[0033] like Figure 1 and Figure 2As shown, in one embodiment, a flash evaporator 10 is provided, including a tank body 100, a liquid-blocking assembly 200, an anti-vortex assembly 300, and a flow guide 400. The tank body 100 has a receiving cavity 110, and a liquid inlet 121, a steam outlet 122, and a liquid return outlet 123 communicating with the receiving cavity 110. The steam outlet 122 and the liquid return outlet 123 are respectively located at the top and bottom of the receiving cavity 110. The liquid-blocking assembly 200 is installed inside the receiving cavity 110 and forms a steam storage chamber 111 with the inner wall of the receiving cavity 110 on the side facing the steam outlet 122. The liquid-blocking assembly 200 has a communication port 211 communicating with the steam storage chamber 111 and is used to prevent liquid from entering the steam storage chamber 111. The anti-vortex assembly 300 is installed inside the receiving cavity 110 and forms a liquid storage chamber 112 with the inner wall of the receiving cavity 110 on the side facing the liquid return outlet 123. The anti-vortex assembly 300 is provided with a connecting hole 311 that communicates with the liquid storage chamber 112 and is used to reduce the intensity of liquid movement. A flow guide 400 is installed on the anti-vortex assembly 300 and is located between the liquid-blocking assembly 200 and the anti-vortex assembly 300. The flow guide 400 is spaced apart from the inner wall of the receiving cavity 110 and, together with the liquid-blocking assembly 200, the anti-vortex assembly 300, and the inner wall of the receiving cavity 110, forms a vapor-liquid separation chamber 113. The vapor-liquid separation chamber 113 communicates with the liquid inlet 121, the connecting port 211, and the connecting hole 311.

[0034] In the flash tank 10 described above, during use, high-speed flowing liquid enters the vapor-liquid separation chamber 113 from the inlet 121 and collides with the guide member 400 and the inner wall of the receiving cavity 110, causing the liquid to spiral downward along the guide member 400, thus achieving vapor-liquid phase separation. The separated vapor moves upward and impacts the liquid-blocking assembly 200 to separate and intercept the small amount of liquid droplets carried in the vapor. The vapor is then discharged through the connecting port 211, the steam storage chamber 111, and the steam outlet 122, effectively reducing the amount of liquid carried by the vapor and improving the quality of the vapor. The separated liquid spirals downwards to the bottom of the vapor-liquid separation chamber 113 and collides with the anti-vortex component 300, forcibly interrupting the liquid's rotational motion and reducing its intensity. The liquid is then discharged through the connecting hole 311, the storage chamber 112, and the return port 123, thus changing the liquid from a high-speed spiral motion state to a stable, non-rotating state. At the same time, the anti-vortex component 300 can effectively block the impact of the vapor flow in the vapor-liquid separation chamber 113 on the liquid in the storage chamber 112, reducing the intensity of the liquid's movement within the tank 100, preventing liquid return and vapor leakage at the return port 123, and improving the safety of the flash tank 10. This application uses a flow guide 400 to guide the liquid entering the tank 100 from the inlet 121, enabling vapor-liquid two-phase separation within the vapor-liquid separation chamber 113. The separated vapor collides with the liquid baffle 200 to effectively reduce the amount of liquid carried by the vapor, improving the quality of the vapor. Meanwhile, the separated liquid collides with the anti-vortex component 300 to reduce the intensity of liquid movement. Simultaneously, the anti-vortex component 300 effectively prevents the vapor flow in the vapor-liquid separation chamber 113 from impacting the liquid in the storage chamber 112, preventing steam leakage at the return port 123 and improving the safety of the flash tank 10. Furthermore, the liquid level in the tank 100 does not need to be maintained at a high level, and its distance from the steam outlet 122 and the return port 123 does not need to be large, significantly reducing the structural size of the flash tank 10, simplifying its control, and improving its practicality and reliability.

[0035] Specifically, in this embodiment, the motion intensity of the liquid refers to the comprehensive characterization of the rotational kinetic energy and the intensity of turbulence when the liquid flows in the flash tank 10, specifically manifested as the rotational speed, eddy scale and energy dissipation rate of the liquid when it undergoes high-speed spiral motion.

[0036] Specifically, in this embodiment, the liquid inlet 121 is located on one side of the tank 100, the steam outlet 122 is located at the top of the tank 100, and the liquid return outlet 123 is located at the bottom of the tank 100.

[0037] The flow guide 400 can be configured as any structure in the prior art that can guide the liquid to move downwards in a spiral along the flow guide 400.

[0038] like Figure 1 and Figure 3As shown, the flow guide 400 further includes a connecting section 410 fixedly connected to the anti-vortex assembly 300, and a flow guide section 420 connected to the top of the connecting section 410. The liquid inlet 121 is located outside the flow guide section 420 so that the flow guide section 420 can guide the liquid entering the vapor-liquid separation chamber 113 from the liquid inlet 121. Thus, the vapor-liquid separation chamber 113 is annular, and the liquid inlet 121 is located outside the vapor-liquid separation chamber 113, ensuring that the liquid moves spirally downward in the vapor-liquid separation chamber 113, realizing the flow of liquid in a smaller space to complete the vapor-liquid two-phase separation, which facilitates the miniaturization design of the flash tank 10.

[0039] The connecting segment 410 can be fixedly connected to the anti-vortex assembly 300 by snap-fit, plug-in, screw-in, or other means. Specifically, in this embodiment, the anti-vortex assembly 300 is provided with a socket, and the connecting segment 410 is plugged into the socket.

[0040] like Figure 1 and Figure 3 As shown, optionally, the outer diameter of the guide section 420 gradually decreases along the direction close to the anti-vortex component 300. Thus, the guide section 420 has a shape that is larger at the top and smaller at the bottom, so that the flow cross-sectional area of ​​the separated liquid continuously increases when it moves downward in a spiral motion, thereby reducing the intensity of the liquid's movement and improving the reliability of the flash tank 10.

[0041] like Figure 1 and Figure 3 As shown, optionally, the flow guide 400 also includes a liquid-retaining ring 430 connected to the top of the flow guide section 420. The liquid-retaining ring 430 is located above the liquid inlet 121 and extends toward the outer wall of the vapor-liquid separation chamber 113. In this way, the liquid-retaining ring 430 can effectively block liquid splashed upward due to the collision between the liquid and the inner wall of the flow guide section 420 and / or the receiving cavity 110, preventing the splashed liquid from being carried away by the vapor flow, reducing the risk of vapor carryover, and improving the reliability of the flash tank 10.

[0042] Specifically, in this embodiment, the connecting section 410 is cylindrical, while the guide section 420 and the baffle ring 430 are both conical. The connecting section 410, the guide section 420, and the baffle ring 430 are connected sequentially and coaxially arranged. The outer diameter of one end of the guide section 420 is the same as that of the connecting section 410, and the outer diameter of the other end of the guide section 420 is the same as the outer diameter of the baffle ring 430 near the guide section 420. Along the direction close to the anti-vortex assembly 300, the outer diameter of the baffle ring 430 gradually decreases. The inclination angle of the baffle ring 430 relative to a vertical line (e.g., the axis of the guide member 400) is greater than the inclination angle of the guide member 400 relative to a vertical line.

[0043] Among them, the anti-vortex component 300 can be configured as any of the existing technologies that can reduce the motion intensity of the liquid, so as to realize the liquid from a high-speed spiral motion state to a non-rotational stable state.

[0044] like Figure 1 and Figure 4 As shown, in one embodiment, the anti-vortex assembly 300 includes a first perforated plate 310, a connector 320, and at least one anti-vortex plate 330. The connector 320 is fixedly installed on the first perforated plate 310 and fixedly connected to the connecting section 410. The first perforated plate 310 is fixedly installed on the inner wall of the receiving cavity 110 and is provided with a plurality of connecting holes 311. Each anti-vortex plate 330 is located on the side of the first perforated plate 310 away from the liquid storage chamber 112, and is spaced apart on the first perforated plate 310 around the axis of the connector 320. Both ends of each anti-vortex plate 330 are respectively connected to the connector 320 and the inner wall of the receiving cavity 110. In this way, when the separated liquid moves to the bottom of the vapor-liquid separation chamber 113, the liquid will be blocked by each anti-vortex plate 330, causing the rotational motion of the liquid to be forcibly interrupted to change the motion intensity of the liquid, thereby reducing the motion intensity of the liquid and improving the practicality of the flash tank 10.

[0045] The number of anti-vortex plates 330 can be flexibly adjusted according to actual usage. In this embodiment, the number of anti-vortex plates 330 is twelve.

[0046] like Figure 4 As shown, optionally, at least a portion of the anti-vortex plate 330 has at least one pointed cone 331 on its top, and the pointed cones 331 on the same anti-vortex plate 330 are arranged at radial intervals along the joint 320. In this way, when the liquid flows through the anti-vortex plate 330, the pointed cones 331 on the top of the anti-vortex plate 330 continuously pierce the liquid film, thereby completing the secondary separation of vapor and liquid, further reducing the risk of liquid return and vapor leakage, and improving the reliability and safety of the flash tank 10.

[0047] It should be noted that at least some of the anti-vortex plates 330 have at least one pointed cone 331 on their tops. This can be either a partial distribution of the anti-vortex plates 330 or all of the anti-vortex plates 330 having at least one pointed cone 331 on their tops. The number of pointed cones 331 on the same anti-vortex plate 330 can be flexibly adjusted according to actual usage needs. For example, the number of pointed cones 331 on the same anti-vortex plate 330 can be five, seven, or nine, etc.

[0048] In this specific embodiment, the anti-vortex plate 330 and its various pointed cones 331 are integrally formed. Each anti-vortex plate 330 is connected to the first perforated plate 310 and the connector 320 by welding.

[0049] like Figure 4As shown, optionally, the anti-vortex assembly 300 further includes a second orifice plate 340 and at least one first support member 350. The second orifice plate 340 is located on the side of the first orifice plate 310 near the liquid storage chamber 112 and is fixedly installed on the inner wall of the receiving cavity 110. The second orifice plate 340 and the first orifice plate 310 are spaced apart. Each of the first support members 350 is spaced apart between the first orifice plate 310 and the second orifice plate 340 and is connected to the first orifice plate 310 and the second orifice plate 340. In this way, the first orifice plate 310, the second orifice plate 340 and the inner wall of the receiving cavity 110 form a buffer space. The liquid whose motion intensity has been reduced by the anti-vortex assembly 300 must enter the liquid storage chamber 112 through the first orifice plate 310, the buffer space and the second orifice plate 340, to ensure that the liquid is stable in the liquid storage chamber 112, avoid backflow and vapor leakage, and improve the safety of the flash tank 10.

[0050] The first support member 350 can be configured as a support rod, support column, support block, or other support structure. The number and arrangement of the first support members 350 can be flexibly adjusted according to actual usage needs.

[0051] Specifically, in this embodiment, the first perforated plate 310 is annular in shape, with its inner edge welded to the bottom edge of the connector 320, and its outer edge welded to the inner wall of the receiving cavity 110. The second perforated plate 340 is circular in shape, with its outer edge welded to the inner wall of the receiving cavity 110.

[0052] The liquid-blocking component 200 can be configured as any structure in the prior art capable of blocking liquid droplets in the vapor.

[0053] like Figure 1 and Figure 5 As shown, in one embodiment, the liquid-blocking assembly 200 includes a liquid-guiding disk 210 and a liquid-blocking plate 220. The liquid-guiding disk 210 is fixedly installed on the inner wall of the receiving cavity 110 and has a communication port 211. The liquid-guiding disk 210 slopes downward from its outer edge toward the communication port 211. The liquid-blocking plates 220 are spaced above the liquid-guiding disk 210 and block the communication port 211. In this way, the separated steam moves upward and successively impacts the outer wall of the liquid-guiding disk 210 and the liquid-blocking plate 220, thereby separating and intercepting the small amount of liquid droplets carried in the steam and improving the quality of the steam.

[0054] Specifically, in this embodiment, the connecting port 211 is located at the center of the liquid guiding plate 210. The liquid guiding plate 210 and the liquid baffle 220 are coaxially arranged along the vertical direction, and the projection area of ​​the connecting port 211 is located within the projection area of ​​the liquid baffle 220. The liquid-blocking assembly 200 also includes at least one second support member 230. Each second support member 230 is located between the liquid guiding plate 210 and the liquid baffle 220, and is spaced apart around the axis of the connecting port 211. Both ends of each second support member 230 are connected to the liquid guiding plate 210 and the liquid baffle 220, respectively.

[0055] The second support member 230 can be configured as a support rod, support column, support block, or other support structure. The number and arrangement of the second support members 230 can be flexibly adjusted according to actual usage needs.

[0056] like Figure 1 and Figure 5 As shown, optionally, the flow guide 400 is provided with a flow guide hole 441 communicating with the liquid storage chamber 112. The flow guide hole 441 is located directly below the communication port 211 and is used to guide the liquid dripping from the communication port 211 to the liquid storage chamber 112. In this way, the flow guide 400 can also guide the droplets falling from the liquid blocking assembly 200, so that the dripping droplets can also enter the liquid storage chamber for recycling, improving the practicality of the flash tank 10.

[0057] Specifically, in this embodiment, the inner diameter of the end of the guide hole 441 near the liquid guide plate 210 is larger than the inner diameter of the connecting port 211.

[0058] like Figure 1 and Figure 5 As shown, optionally, the inner and / or outer walls of the liquid guiding plate 210 are provided with transverse grooves 212 and longitudinal grooves 213, with at least one transverse groove 212 and at least one longitudinal groove 213. Each transverse groove 212 is arranged in a ring shape and is sequentially spaced along the radial direction of the liquid guiding plate 210 on the outer side of the connecting port 211. Each longitudinal groove 213 is spaced around the axis of the liquid guiding plate 210. Each longitudinal groove 213 communicates with each transverse groove 212. The two ends of each longitudinal groove 213 extend to the outer edge of the liquid guiding plate 210 and the inner wall of the connecting port 211, respectively. In this way, each transverse groove 212 and each longitudinal groove 213 cooperate to form a liquid collecting net, so that the intercepted small liquids can quickly gather together, and when the liquids gather to a sufficiently large size, they fall quickly by gravity, ensuring that the liquid intercepted on the liquid blocking assembly 200 can be removed in time, thereby reducing the risk of vapor carryover and improving the reliability of the flash tank 10.

[0059] In other embodiments, the inner and / or outer walls of the guide member 400 may also be provided with transverse grooves 212 and longitudinal grooves 213, and their structure and working principle are similar to those described above, and will not be described in detail here.

[0060] In one embodiment, an air conditioning unit is also provided, including the flash tank 10 of any of the above embodiments. Thus, the air conditioning unit includes the flash tank 10 and therefore possesses the technical effects corresponding to the flash tank 10, which will not be elaborated further here.

[0061] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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 of this application.

[0062] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0066] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0067] 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.

[0068] The above embodiments merely illustrate 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 protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A flash tank characterized in that, The application relates to a kettle body (100) provided with a containing cavity (110), a liquid inlet (121), a steam outlet (122) and a liquid return outlet (123) which are in communication with the containing cavity (110), the steam outlet (122) and the liquid return outlet (123) are arranged at the top and the bottom of the containing cavity (110) respectively, a liquid blocking assembly (200) is arranged in the containing cavity (110) and a steam storage chamber (111) is formed on the side of the liquid blocking assembly (200) which faces the steam outlet (122) and is surrounded by the inner wall of the containing cavity (110), the liquid blocking assembly (200) is provided with a communication port (211) which is in communication with the steam storage chamber (111) and is used for blocking liquid from entering the steam storage chamber (111), a vortex preventing assembly (300) is arranged in the containing cavity (110) and a liquid storage chamber (112) is formed on the side of the vortex preventing assembly (300) which faces the liquid return outlet (123) and is surrounded by the inner wall of the containing cavity (110), the vortex preventing assembly (300) is provided with a communication hole (311) which is in communication with the liquid storage chamber (112) and is used for reducing the movement intensity of liquid, a flow guide piece (400) is arranged on the vortex preventing assembly (300) and is located between the liquid blocking assembly (200) and the vortex preventing assembly (300), the flow guide piece (400) is arranged in a spaced mode with the inner wall of the containing cavity (110) and is surrounded by the liquid blocking assembly (200), the vortex preventing assembly (300) and the inner wall of the containing cavity (110) to form a steam-liquid separation chamber (113), the steam-liquid separation chamber (113) is in communication with the liquid inlet (121), the communication port (211) and the communication hole (311). The flow guide piece (400) comprises a connecting section (410) which is fixedly connected with the vortex preventing assembly (300) and a flow guide section (420) which is connected with the top of the connecting section (410), the liquid inlet (121) is located on the outer side of the flow guide section (420) so that the flow guide section (420) can guide the liquid entering the steam-liquid separation chamber (113) from the liquid inlet (121). In the direction close to the vortex preventing assembly (300), the outer diameter of the flow guide section (420) gradually decreases. The flow guide piece (400) further comprises a liquid blocking ring (430) which is connected with the top of the flow guide section (420), the liquid blocking ring (430) is located above the liquid inlet (121) and extends towards the outer wall of the steam-liquid separation chamber (113). ​ 2. The flash tank of claim 1, wherein, ​ 3. The flash tank of claim 2, wherein, ​ 4. The flash tank of claim 2, wherein, ​ 5. The flash tank of claim 2, wherein, The anti-vortex assembly (300) comprises a first hole plate (310), a joint (320) and at least one anti-vortex plate (330), the joint (320) is fixedly installed on the first hole plate (310) and fixedly connected with the connecting section (410), the first hole plate (310) is fixedly installed on the inner wall of the accommodating cavity (110) and is provided with a plurality of communication holes (311), each anti-vortex plate (330) is located on the side of the first hole plate (310) away from the liquid storage chamber (112) and is arranged on the first hole plate (310) at intervals around the axis of the joint (320), and both ends of each anti-vortex plate (330) are connected with the joint (320) and the inner wall of the accommodating cavity (110) respectively.

6. The flash tank of claim 5, wherein, The top of at least part of the anti-vortex plate (330) is provided with at least one sharp cone (331), and each sharp cone (331) on the same anti-vortex plate (330) is arranged at intervals along the radial direction of the joint (320).

7. The flash tank of claim 5, wherein, The anti-vortex assembly (300) further comprises a second hole plate (340) and at least one first supporting piece (350), the second hole plate (340) is located on the side of the first hole plate (310) close to the liquid storage chamber (112) and is fixedly installed on the inner wall of the accommodating cavity (110), the second hole plate (340) is arranged at intervals with the first hole plate (310), and each first supporting piece (350) is arranged at intervals between the first hole plate (310) and the second hole plate (340) and connects the first hole plate (310) and the second hole plate (340).

8. The flash tank according to any one of claims 1 to 7, characterized in that The liquid blocking assembly (200) comprises a liquid guide disc (210) and a liquid blocking plate (220), the liquid guide disc (210) is fixedly installed on the inner wall of the accommodating cavity (110) and is provided with the communication port (211), the liquid guide disc (210) is inclined downward from the outer edge of the liquid guide disc (210) toward the communication port (211), and the liquid blocking plate (220) is installed above the liquid guide disc (210) at intervals and shields the communication port (211).

9. The flash tank of claim 8, wherein, The flow guide piece (400) is provided with a flow guide through hole (441) in communication with the liquid storage chamber (112), the flow guide through hole (441) is located directly below the communication port (211) and is used for guiding the liquid dropped from the communication port (211) to the liquid storage chamber (112).

10. The flash tank of claim 8, wherein, The inner side wall and / or the outer side wall of the liquid guide disc (210) is provided with transverse grooves (212) and longitudinal grooves (213), the number of the transverse grooves (212) and the number of the longitudinal grooves (213) are both at least one, each of the transverse grooves (212) is arranged annularly and is sequentially and spacedly sleeved outside the communication port (211) along the radial direction of the liquid guide disc (210), each of the longitudinal grooves (213) is spacedly arranged around the axis of the liquid guide disc (210), each of the longitudinal grooves (213) is communicated with each of the transverse grooves (212), and both ends of each of the longitudinal grooves (213) extend to the outer side edge of the liquid guide disc (210) and the inner side wall of the communication port (211) respectively.

11. An air conditioning unit characterized by, A flash tank (10) according to any one of claims 1 to 10.

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