flooded evaporator

Abstract

This application relates to a flooded evaporator, comprising a shell, a receiving cavity, and an inlet and an outlet communicating with the receiving cavity. The inlet is located at the bottom of the shell, and the outlet is located at the top of the shell. A gas-liquid separation structure is disposed within the receiving cavity and has a steam inlet facing the top of the shell. The shell has a flow channel that guides the gas-liquid mixed refrigerant within the receiving cavity from the bottom of the shell to the top, and then back into the steam inlet facing the bottom of the shell, for gas-liquid separation of the gas-liquid mixed refrigerant. Therefore, under the gas-liquid separation action of the gas-liquid separation structure, the liquid refrigerant can continue to flow smoothly from top to bottom to the bottom of the shell, while the gaseous refrigerant can separate from the liquid refrigerant and flow towards the outlet at the top of the shell. Thus, the separation effect of the liquid refrigerant is better, thereby improving the dryness of the gas after evaporation in the flooded evaporator, enabling the unit to achieve optimal heat exchange performance.

Description

Technical Field

[0001] This application relates to the field of heat exchanger technology, and in particular to a flooded evaporator. Background Technology

[0002] Currently, the water system components in commercial air conditioning refrigeration systems mainly include evaporators and condensers. Among them, the commonly used structural forms of evaporators are falling film evaporators, flooded evaporators, and dry evaporators.

[0003] Among these types of evaporators, the falling film evaporator has the highest heat exchange efficiency, and it has the advantages of saving refrigerant, uniform heat exchange, high space utilization, and low liquid carryover during suction.

[0004] In chiller systems, flooded evaporators are widely used due to their simple structure and stable operation. However, during system operation, as operating conditions fluctuate, the evaporator structure remains unchanged, resulting in low dryness of the evaporated gas. This leads to low superheat of the suction gas and low unit performance. Specifically, when the evaporator is operating at maximum capacity, the increased flow suction increases the total system displacement, causing liquid carryover during suction. This affects the dryness of the compressor suction end, preventing the system from achieving optimal heat exchange performance. Summary of the Invention

[0005] Therefore, it is necessary to address the problem that the dryness of the gas after evaporation in existing flooded evaporators is low, which prevents the unit from achieving optimal heat exchange performance, and to provide a flooded evaporator that can improve the dryness of the gas after evaporation so that the unit can achieve optimal heat exchange performance.

[0006] This application provides a flooded evaporator, comprising:

[0007] The housing has a receiving cavity and an inlet and an outlet communicating with the receiving cavity. The inlet is located at the bottom of the housing, and the outlet is located at the top of the housing; and

[0008] A gas-liquid separation structure is located inside the receiving cavity and has a steam inlet end facing the top of the shell;

[0009] The shell has a flow channel that guides the gas-liquid mixed refrigerant in the containment cavity to move from the bottom of the shell to the top of the shell, and then back to the bottom of the shell to enter the steam inlet, for gas-liquid separation of the gas-liquid mixed refrigerant.

[0010] In some embodiments, the housing includes a first housing and a second housing. The first housing has a receiving cavity, a liquid inlet and a vent, and the second housing is disposed in the receiving cavity. The gas-liquid separation structure is disposed in the second housing.

[0011] A drainage channel is formed between the first shell and the second shell, or a drainage channel is formed inside the second shell.

[0012] In some embodiments, the second housing has a gas-liquid separation chamber, a gas-liquid separation structure is disposed in the gas-liquid separation chamber, and the gas-liquid separation chamber is connected to the exhaust port and the drainage channel.

[0013] In some embodiments, the gas-liquid separation structure includes a dispersing element for dispersing the gas-liquid mixed refrigerant from the guide channel; and / or

[0014] The gas-liquid separation structure also includes a liquid guide, which is used to guide the liquid refrigerant to the bottom of the housing.

[0015] In some embodiments, the liquid guide is located downstream of the dispersant along the flow direction of the gas-liquid mixed refrigerant in the gas-liquid separation structure.

[0016] In some embodiments, the dispersion element includes a dispersion grid element.

[0017] In some embodiments, the liquid guide is configured to have a recessed groove forming a liquid guide groove in a direction away from the steam inlet end.

[0018] In some embodiments, the fluid guide groove extends toward the vent.

[0019] In some embodiments, the liquid guiding element includes a plurality of liquid guiding grooves, all of which are arranged sequentially in a direction intersecting the direction from the top of the housing to the bottom of the housing.

[0020] In some embodiments, the liquid guiding element includes a first liquid guiding plate and a second liquid guiding plate, the first liquid guiding plate and the second liquid guiding plate being arranged at an angle to form a liquid guiding groove.

[0021] In some embodiments, at least one of the first liquid guide plate and the second liquid guide plate is inclined toward the steam inlet end along the direction from the bottom of the housing to the top of the housing.

[0022] In some embodiments, a first air passage is provided on the wall of the liquid guiding groove, and the first air passage is located away from the bottom of the liquid guiding groove.

[0023] In some embodiments, the first air passage includes a plurality of first air passages, all of which are arranged at intervals along the extension direction of the liquid guide.

[0024] In some embodiments, the gas-liquid separation structure further includes a first liquid-blocking component, which is located downstream of the dispersing component or the liquid-guiding component along the flow direction of the gas-liquid mixed refrigerant in the gas-liquid separation structure.

[0025] The first liquid-blocking component is used to prevent liquid refrigerant from entering the exhaust port.

[0026] In some embodiments, the first liquid-blocking component has a plurality of third air passages, all of which are spaced apart from each other.

[0027] In some embodiments, a first liquid-blocking element is disposed at one end of the dispersing element or the liquid-guiding element in the extending direction of the dispersing element or the liquid-guiding element.

[0028] In some embodiments, the housing defines a gas-liquid separation chamber within the receiving cavity, and a gas-liquid separation structure is disposed within the gas-liquid separation chamber. Along the flow direction of the gas-liquid mixed refrigerant in the gas-liquid separation structure, a first liquid-blocking component is used to sequentially divide the gas-liquid separation chamber into a first chamber and a second chamber. A liquid guiding component and / or a dispersing component are disposed in the first chamber, and an exhaust port communicates with the second chamber.

[0029] In some embodiments, the gas-liquid separation structure has an outlet channel, one end of which has an inlet and the other end is connected to an exhaust port, with the inlet located away from the steam inlet end.

[0030] In some embodiments, the housing defines a gas-liquid separation chamber within the receiving cavity, a gas-liquid separation structure is disposed within the gas-liquid separation chamber, and the bottom wall of the gas-liquid separation chamber is provided with multiple drain ports, all of which are spaced apart from each other.

[0031] In the aforementioned flooded evaporator, after the liquid refrigerant undergoes heat exchange, a vapor-liquid mixture is formed. This mixture moves from the bottom to the top of the shell through the guide channel and then re-enters the steam inlet towards the bottom. In other words, the vapor-liquid mixture moves downwards into the gas-liquid separation structure. Under the gas-liquid separation effect of this structure, the liquid refrigerant continues to flow smoothly downwards to the bottom of the shell, while the gaseous refrigerant separates from the liquid and flows towards the outlet at the top of the shell. Therefore, the separation effect of the liquid refrigerant is improved, thereby increasing the dryness of the gas after evaporation in the flooded evaporator and enabling the unit to achieve optimal heat exchange performance. Attached Figure Description

[0032] Figure 1 A schematic diagram of the axial cross-sectional structure of a flooded evaporator according to an embodiment of this application is shown;

[0033] Figure 2 for Figure 1 A schematic diagram of the radial cross-sectional structure of a flooded evaporator is shown.

[0034] Figure 3 for Figure 1 A schematic diagram of the axial cross-sectional structure of a partially filled evaporator is shown.

[0035] Figure 4 for Figure 3 A top view schematic diagram of a flooded evaporator;

[0036] Figure 5 for Figure 3 A schematic diagram of the radial cross-sectional structure of a partially filled evaporator is shown.

[0037] Figure 6 This is a schematic diagram of the liquid guiding component in one embodiment of this application.

[0038] Figure label:

[0039] 100-cell flooded evaporator;

[0040] Shell 10, receiving cavity 11, liquid inlet 12, exhaust port 13, drainage channel 14, first drainage channel 141, second drainage channel 142, first shell 15, second shell 16, bottom wall 161, top wall 162, side wall 163, first windproof component 164, gas-liquid separation chamber 165, first chamber 1651, second chamber 1652, liquid outlet 166;

[0041] Gas-liquid separation structure 20, steam inlet end 21, dispersion component 22, liquid guide component 23, liquid guide groove 231, first liquid guide plate 232, second liquid guide plate 233, first air flow hole 234, second air flow hole 235, first liquid baffle 24, third air flow hole 241, air outlet channel 25, air inlet 251, air outlet cylinder 26, second liquid baffle 27;

[0042] Heat exchanger 30. Detailed Implementation

[0043] 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.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of 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 herein includes any and all combinations of one or more of the associated listed items.

[0045] 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0046] 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.

[0047] 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 according to the specific circumstances.

[0048] 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 is in indirect contact with the second feature through 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. "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.

[0049] It should be noted that when 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. When 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] The accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0051] Figure 1 A schematic diagram of the axial cross-sectional structure of a flooded evaporator according to an embodiment of this application is shown; Figure 2 for Figure 1 The diagram shows a radial cross-sectional view of a flooded evaporator.

[0052] Referring to the accompanying drawings, one embodiment of this application provides a flooded evaporator 100, including a housing 10 and a gas-liquid separation structure 20.

[0053] The housing 10 has a receiving cavity 11 and a liquid inlet 12 and a vent 13 communicating with the receiving cavity 11. The liquid inlet 12 is located at the bottom of the housing 10 and the vent 13 is located at the top of the housing 10.

[0054] In the embodiments of this application, the outer shape of the housing 10 may be cylindrical or other shapes, and there is no specific limitation. When the housing 10 is cylindrical, the liquid inlet 12 and the exhaust port 13 are both provided on the arc-shaped side wall of the cylindrical shape.

[0055] The gas-liquid separation structure 20 is located inside the receiving cavity and is used to separate the gas and liquid mixture of refrigerant.

[0056] In the embodiments of this application, the liquid inlet 12 is used to introduce liquid refrigerant, and the exhaust port 13 is used to discharge gaseous refrigerant. The flooded evaporator 100 also includes multiple heat exchange elements 30, which are disposed within the receiving cavity 11 and are used to exchange heat with the liquid refrigerant entering through the liquid inlet 12 to generate a vapor-liquid mixed refrigerant. The gas-liquid separation structure 20 is used to separate the gas and liquid in the vapor-liquid mixed refrigerant to obtain gaseous and liquid refrigerant. The liquid refrigerant can fall back to the multiple heat exchange elements 30 under its own gravity, while the gaseous refrigerant is discharged from the exhaust port 13.

[0057] The housing 10 has a flow channel 14, which can guide the gas-liquid mixed refrigerant in the receiving cavity 11 to move from the bottom of the housing 10 to the top of the housing 10, and then enter the steam inlet 21 again towards the bottom of the housing 10.

[0058] Thus, after the liquid refrigerant undergoes heat exchange, it forms a vapor-liquid mixture. This mixture moves from the bottom to the top of the shell 10 through the guide channel 14, and then enters the steam inlet 21 again towards the bottom of the shell 10. In other words, the vapor-liquid mixture moves from top to bottom into the gas-liquid separation structure 20. Under the gas-liquid separation action of the gas-liquid separation structure 20, the liquid refrigerant can continue to flow smoothly from top to bottom to the bottom of the shell 10, while the gaseous refrigerant can separate from the liquid refrigerant and flow towards the outlet at the top of the shell 10. Therefore, the separation effect of the liquid refrigerant will be better, thereby improving the dryness of the gas after evaporation in the flooded evaporator 100, enabling the unit to achieve optimal heat exchange performance.

[0059] like Figures 1-3 As shown, in a specific embodiment of this application, the housing 10 includes a first housing 15 and a second housing 16. The first housing 15 has a receiving cavity 11, a liquid inlet 12 and a vent 13. The second housing 16 is disposed in the receiving cavity 11. The gas-liquid separation structure 20 is disposed in the second housing 16. The first housing 15 and the second housing 16 are spaced apart to form a drainage channel 14.

[0060] In this way, the gas-liquid mixed refrigerant formed in the receiving cavity 11 can enter the interior of the second housing 16 through the flow channel 14 between the first housing 15 and the second housing 16. The second housing 16 not only separates the cavity for the gas-liquid separation structure 20 in the receiving cavity 11, but also plays the role of guiding the flow of the gas-liquid mixed refrigerant. Its structure and the first housing 15 are both simple, and the matching method is also simple, thus simplifying the overall structure of the housing 10.

[0061] Specifically, the first shell 15 can serve as the outer shell of the entire flooded evaporator 100, and the gas-liquid separation structure 20 and the second shell 16 can be set inside the shell as a whole as a dehumidification mechanism. In this case, the drainage channel 14 is formed by the gap between the shell and the dehumidification mechanism.

[0062] More specifically, the second housing 16 has a bottom wall 161 facing the liquid inlet 12, a top wall 162 opposite to the bottom wall 161, and a side wall 163 connecting the bottom wall 161 and the top wall 162. A first drainage channel 141 is formed between the side portion of the first housing 15 and the side wall 163, and a second drainage channel 142 is formed between the top portion of the first housing 15 and the top wall 162. The first drainage channel 141 connects the receiving cavity 11 and one end of the second drainage channel 142, and the second drainage channel 142 connects to the interior of the second housing 16. The steam inlet 21 of the gas-liquid separation structure 20 is located at the top of the second housing 16.

[0063] In order to concentrate the vapor-liquid mixed refrigerant into the steam inlet 21 from the self-draining channel 14 and avoid outward diffusion, in the embodiment of this application, the second housing 16 also has two first wind deflectors 164. The two first wind deflectors 164 are respectively disposed on opposite sides of the top wall 162, and one end of each first wind deflector 164 is connected to the top wall 162 and the other end is connected to the first housing 15, so as to form a second drainage channel 142 between the top wall 162, the two first wind deflectors 164 and the first housing 15.

[0064] In other embodiments of this application, the flow channel 14 can be directly formed in the dehumidification mechanism, that is, in the second housing 16. In other words, the gas-liquid mixed refrigerant can directly enter the second housing 16 and then enter the gas-liquid separation structure 20 in the second housing 16 under the action of the flow channel 14.

[0065] In this way, the gas-liquid mixed refrigerant formed in the receiving cavity 11 can enter the gas-liquid separation structure 20 through the flow channel 14 in the second shell 16. The second shell 16 not only separates the inner cavity of the gas-liquid separation structure 20 in the receiving cavity 11, but also plays the role of guiding the flow of the gas-liquid mixed refrigerant. Its structure and the first shell 15 are both simple, and the matching method is also simple, so the overall structure of the shell 10 can also be simplified.

[0066] In an embodiment of this application, the second housing 16 has a gas-liquid separation chamber 165, and a gas-liquid separation structure 20 is disposed within the gas-liquid separation chamber 165. The gas-liquid separation chamber 165 connects the exhaust port 13 and the drainage channel 14. In this way, the gas-liquid separation structure 20 can complete the separation of gaseous refrigerant and liquid condensate within the gas-liquid separation chamber 165, preventing the gas-liquid mixed refrigerant from returning to the receiving cavity 11 and affecting the separation.

[0067] Specifically, the second housing 16 includes multiple second baffles, all of which enclose and define a gas-liquid separation chamber 165. By providing the second baffles, external gas-liquid mixed refrigerant can be completely prevented from entering the gas-liquid separation chamber 165 from the inlet of the non-connected flow channel 14.

[0068] In some embodiments, the second housing 16 has a drain port 166, which connects the gas-liquid separation chamber 165 and the receiving chamber 11, for discharging liquid refrigerant. Specifically, the drain port 166 is located on the bottom wall 161 of the second housing 16.

[0069] like Figures 3-5 As shown, in some embodiments, the gas-liquid separation structure 20 includes a dispersant 22 for dispersing the gas-liquid mixed refrigerant from the diversion channel 14.

[0070] Since the vapor-liquid mixed refrigerant flows from the top of the shell 10 to the bottom of the shell 10 into the gas-liquid separation structure 20, and the exhaust port 13 is located at the top of the shell 10, the separated gaseous refrigerant or a small amount of vapor-liquid mixed refrigerant will move back to the exhaust port 13 within the gas-liquid separation structure 20. Therefore, the length of the gas-liquid separation path in the gas-liquid separation structure 20 will inevitably vary, and the vapor-liquid mixed refrigerant will accumulate at the steam inlet 21 at the location of the shortest path. Therefore, by setting the dispersing component 22, the vapor-liquid mixed refrigerant from the diversion channel 14 can be dispersed, thus avoiding the accumulation of the vapor-liquid mixed refrigerant and the inability to be fully separated within the gas-liquid separation structure 20, thereby improving the dehumidification efficiency and dehumidification effect of the gas-liquid separation structure 20.

[0071] Preferably, the dispersant 22 is located at the steam inlet 21. In this way, the vapor-liquid mixed refrigerant can be effectively dispersed at the beginning of entering the gas-liquid separation structure 20, thereby improving the subsequent dehumidification effect.

[0072] Specifically, the dispersed component 22 includes dispersed grid components.

[0073] The dispersed mesh component has multiple dispersed mesh holes, which can disperse the vapor-liquid mixed refrigerant and avoid concentration. This dispersion method is simple and highly efficient.

[0074] In some embodiments, the gas-liquid separation structure 20 further includes a liquid guide 23, which guides the liquid refrigerant to the bottom of the housing 10. Specifically, the liquid guide 23 guides the liquid refrigerant to the drain port 166 and then to the bottom of the housing 10.

[0075] By setting up the liquid guide 23, the discharge of liquid refrigerant can be accelerated, thereby avoiding its retention in the gas-liquid separation structure 20 and affecting the gas-liquid separation effect.

[0076] Specifically, along the flow direction of the vapor-liquid mixed refrigerant in the gas-liquid separation structure 20, the liquid guiding element 23 is located downstream of the dispersing element 22. This allows for comprehensive liquid guiding of the dispersed vapor-liquid mixed refrigerant, improving the liquid guiding efficiency. Of course, in other embodiments, the liquid guiding element 23 can also be located upstream of the dispersing element 22.

[0077] In some embodiments, the liquid guide 23 is configured to have a liquid guide groove 231 recessed in the direction away from the steam inlet end 21.

[0078] By setting the liquid guiding groove 231, the gas-liquid mixed refrigerant can impact the groove wall and, due to inertia, achieve flow direction separation. The gaseous refrigerant continues to flow towards the exhaust port 13, while the liquid refrigerant accumulates at the bottom of the liquid guiding groove 231 and then flows towards the bottom of the housing 10. Therefore, using the liquid guiding groove 231 can better collect the liquid refrigerant and quickly guide it out, thereby improving the gas-liquid separation effect.

[0079] Specifically, the liquid guide 23 is disposed facing the steam inlet end 21. More specifically, the liquid guide 23 is disposed facing the dispersing member 22. Preferably, in the direction from the bottom to the top of the housing 10, the orthographic projection of the liquid guide 23 toward the housing 10 covers the orthographic projection of the dispersing member 22 toward the housing 10. In this way, the vapor-liquid mixed refrigerant entering from the dispersing member 22 can all enter the liquid guide groove 231.

[0080] like Figure 5 and 6 As shown, in a specific embodiment of this application, the liquid guiding member 23 includes a first liquid guiding plate 232 and a second liquid guiding plate 233, with the first liquid guiding plate 232 and the second liquid guiding plate 233 arranged at an angle to form a liquid guiding groove 231.

[0081] The method of forming the liquid guiding groove 231 by the cooperation of the first liquid guiding plate 232 and the second liquid guiding plate 233 is simple.

[0082] Preferably, at least one of the first liquid guide plate 232 and the second liquid guide plate 233 is inclined toward the steam inlet end 21 in the direction from the bottom of the housing 10 to the top of the housing 10.

[0083] In this way, the vapor-liquid mixed refrigerant entering the liquid guiding groove 231 can be impacted by the first liquid guiding plate 232 or the second liquid guiding plate 233, thereby improving the vapor-liquid separation effect.

[0084] In the embodiments of this application, the first liquid guide plate 232 and the second liquid guide plate 233 are both inclined toward the steam inlet end 21 in the direction from the bottom of the housing 10 to the top of the housing 10.

[0085] In some embodiments, the cross-sectional shape of the liquid guiding groove 231 is V-shaped, or it can be a semi-circular arc or a trapezoidal shape, and the specific shape is not limited.

[0086] In some embodiments, the liquid guiding member 23 includes a plurality of liquid guiding grooves 231, all of which are arranged sequentially in a direction intersecting the top of the housing 10 towards the bottom of the housing 10. Specifically, all the liquid guiding grooves 231 are arranged along the direction intersecting the top of the housing 10 towards the bottom of the housing 10. Figure 1 The directions perpendicular to the paper are arranged sequentially.

[0087] Thus, the arrangement of multiple liquid guiding grooves 231 can form a wave-shaped liquid guiding component 23, which can play a role in preventing droplet turbulence in the gas-liquid mixed refrigerant.

[0088] Specifically, the liquid guiding component 23 may include a plurality of first liquid guiding plates 232 and second liquid guiding plates 233, each of the first liquid guiding plate 232 and the second liquid guiding plate 233 forming a liquid guiding unit, and the plurality of liquid guiding units are arranged in a row.

[0089] In the embodiments of this application, in order to enable the vapor-liquid mixed refrigerant or gaseous refrigerant passing through the liquid guide 23 to flow rapidly toward the exhaust port 13, a liquid guide groove 231 is provided extending toward the exhaust port 13. Thus, under the guidance of the liquid guide groove 231, it can quickly reach the exhaust port 13. Specifically, the liquid guide groove 231 extends along... Figure 1 The horizontal direction shown extends to the left.

[0090] In some embodiments, a plurality of first air passage holes 234 are also provided on the wall of the liquid guiding groove 231. All the first air passage holes 234 are located away from the bottom of the liquid guiding groove 231 and are arranged at intervals along the extension direction of the liquid guiding member 23.

[0091] By setting multiple first air passages 234, the gaseous refrigerant separated by the liquid guide 23 can be quickly discharged from the first air passages 234 and then flow towards the exhaust port 13. This can prevent the gaseous refrigerant from staying in the liquid guide groove 231 and recombining with the liquid refrigerant, thus affecting the separation effect.

[0092] Specifically, the shape of the first air passage 234 can be circular or rectangular, etc.

[0093] In the embodiments of this application, the liquid guiding member 23 has second air passage holes 235 at both ends along its extension direction, which connect the liquid guiding groove 231 and the exhaust port 13. By providing the second air passage holes 235, airflow can be guided to flow towards the exhaust port 13.

[0094] Please refer to it again. Figures 1-3 In some embodiments, the gas-liquid separation structure 20 further includes a first liquid-blocking component 24. Along the flow direction of the gas-liquid mixed refrigerant in the gas-liquid separation structure 20, the first liquid-blocking component 24 is located downstream of the dispersing component 22 or the liquid guiding component 23. The first liquid-blocking component 24 is used to block the liquid refrigerant from entering the exhaust port 13.

[0095] Thus, the vapor-liquid mixed refrigerant, after passing through the dispersing component 22 and the liquid guiding component 23, can be blocked again by the first liquid blocking component 24, further separating the liquid refrigerant from the gaseous refrigerant.

[0096] Furthermore, in the extending direction of the dispersing member 22 or the liquid guiding member 23, a first liquid blocking member 24 is disposed at one end of the dispersing member 22 or the liquid guiding member 23. Specifically, the first liquid blocking member 24 extends along... Figure 1 The horizontal direction shown is located on the left side of the liquid guide 23, that is, the side closer to the exhaust port 13. In this way, the vapor-liquid mixture of refrigerant from the disperser 22 and the liquid guide 23 can be fully received, thereby improving the separation effect.

[0097] Specifically, the first liquid-blocking component 24 has multiple third air passages 241, and all the third air passages 241 are spaced apart from each other.

[0098] By providing a third airflow hole 241, the vapor-liquid mixed refrigerant can impact the first liquid baffle 24 when passing through it. This allows the liquid refrigerant to flow down the first liquid baffle 24, while the gaseous refrigerant flows through the third airflow hole 241 towards the exhaust port 13. Furthermore, the first liquid baffle 24, with multiple third airflow holes 241, can also disperse the vapor-liquid mixed refrigerant, preventing it from concentrating at a single location on the first liquid baffle 24 and thus effectively blocking the liquid refrigerant.

[0099] More specifically, the multiple third airflow holes 241 can be arranged in a gradually decreasing number or evenly. When the multiple third airflow holes 241 are arranged in a gradually decreasing number, their number gradually decreases along the direction from the top of the housing 10 to the bottom of the housing 10. Since the first liquid-blocking component 24 is in contact with the liquid-guiding component 23 near the top of the housing 10, the vapor-liquid mixed refrigerant is more concentrated here. Therefore, providing a larger number of third airflow holes 241 can achieve a good dispersion effect.

[0100] In some embodiments, the housing 10 defines a gas-liquid separation chamber 165 within the receiving cavity 11. A gas-liquid separation structure 20 is disposed within the gas-liquid separation chamber 165. Along the flow direction of the gas-liquid mixing refrigerant in the gas-liquid separation structure 20, a first liquid-blocking member 24 is used to sequentially divide the gas-liquid separation chamber 165 into a first cavity 1651 and a second cavity 1652. A dispersing member 22 and / or a liquid guiding member 23 are disposed in the first cavity 1651, and an exhaust port 13 communicates with the second cavity 1652.

[0101] In this way, all the gas-liquid mixed refrigerant passing through the dispersion element 22 and / or the liquid guiding element 23 must pass through the first liquid blocking element 24 before entering the second chamber 1652 and then being discharged from the exhaust port 13, thus further improving the gas-liquid separation effect.

[0102] In some embodiments, the gas-liquid separation structure 20 has an outlet channel 25, one end of which has an inlet 251 and the other end is connected to the exhaust port 13. The inlet 251 is disposed away from the steam inlet end 21.

[0103] Thus, the gas-liquid mixed refrigerant entering from the steam inlet 21 cannot directly enter the exhaust channel 25 and be discharged from the exhaust port 13. Instead, it needs to go around to the air inlet 251 located away from the steam inlet 21. Therefore, during this flow process, it will inevitably be subject to a certain degree of obstruction, which will allow the gas and liquid to be further separated.

[0104] Specifically, the gas-liquid separation structure 20 also includes an air outlet 26 and a second liquid baffle 27. The air outlet 26 extends along the top of the housing 10 toward the bottom of the housing 10. One end of the air outlet 26 is connected to the exhaust port 13. The second liquid baffle 27 is located at the other end of the air outlet 26 and forms an air inlet 251 with the end face of the air outlet 26.

[0105] In the embodiments of this application, the air outlet channel 25 is disposed in the second cavity 1652.

[0106] In some embodiments, the housing 10 defines a gas-liquid separation chamber 165 within the receiving cavity 11. A gas-liquid separation structure 20 is disposed within the gas-liquid separation chamber 165. The bottom wall of the gas-liquid separation chamber 165 has multiple drain ports 166, all spaced apart from each other. Specifically, all drain ports 166 are located at both ends of the bottom wall of the gas-liquid separation chamber 165 or are sequentially spaced apart along the extending direction of the bottom wall of the gas-liquid separation chamber 165. This allows for rapid drainage of the liquid refrigerant, preventing the separated liquid refrigerant from remaining in the gas-liquid separation chamber 165 and causing secondary entrainment due to airflow.

[0107] The flooded evaporator 100 provided in this application embodiment has the following beneficial effects:

[0108] In the flooded evaporator 100 of this application, after the liquid refrigerant undergoes heat exchange, a vapor-liquid mixture is formed. This mixture moves from the bottom to the top of the shell 10 through the guide channel 14 and then enters the steam inlet 21 again towards the bottom of the shell 10. In other words, the vapor-liquid mixture moves from top to bottom into the gas-liquid separation structure 20. Under the gas-liquid separation action of the gas-liquid separation structure 20, the liquid refrigerant can continue to flow smoothly from top to bottom to the bottom of the shell 10, while the gaseous refrigerant can separate from the liquid refrigerant and flow towards the outlet at the top of the shell 10. Therefore, the separation effect of the liquid refrigerant is better, thereby improving the dryness of the gas after evaporation in the flooded evaporator 100, enabling the unit to achieve optimal heat exchange performance.

[0109] 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.

[0110] 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. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, 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 flooded evaporator (100) characterized by, The application relates to a shell (10) with a containing cavity (11) and a liquid inlet (12) and an exhaust port (13) communicating with the containing cavity (11), the liquid inlet (12) being arranged at the bottom of the shell (10), and the exhaust port (13) being arranged at the top of the shell (10). A gas-liquid separation structure (20) is arranged in the containing cavity (11) and has a steam inlet end (21) arranged towards the top of the shell (10); the gas-liquid separation structure (20) further comprises a dispersing member (22) and a liquid guiding member (23), the dispersing member (22) being used for dispersing the steam-liquid mixed refrigerant from a flow channel (14), and the liquid guiding member (23) being used for guiding the liquid refrigerant to flow to the bottom of the shell (10). The liquid guiding member (23) is arranged downstream of the dispersing member (22) along the flow direction of the steam-liquid mixed refrigerant in the gas-liquid separation structure (20); the liquid guiding member (23) is configured to have a liquid guiding groove (231) recessed in a direction away from the steam inlet end (21); a first gas flow through hole (234) is arranged on the groove wall of the liquid guiding groove (231) and is arranged away from the groove bottom of the liquid guiding groove (231). The shell (10) has a flow channel (14) which can guide the steam-liquid mixed refrigerant in the containing cavity (11) to move from the bottom of the shell (10) to the top of the shell (10) and then enter the steam inlet end (21) again towards the bottom of the shell (10) so as to separate the steam-liquid mixed refrigerant. The shell (10) comprises a first shell (15) and a second shell (16), the first shell (15) has the containing cavity (11), the liquid inlet (12) and the exhaust port (13), and the second shell (16) is arranged in the containing cavity (11), and the gas-liquid separation structure (20) is arranged in the second shell (16). The first shell (15) and the second shell (16) are spaced apart to form the flow channel (14) or the flow channel (14) is formed in the second shell (16).

2. The flooded evaporator (100) according to claim 1, characterized in that The second shell (16) has a gas-liquid separation cavity (165), the gas-liquid separation structure (20) is arranged in the gas-liquid separation cavity (165), and the gas-liquid separation cavity (165) communicates the exhaust port (13) with the flow channel (14). The dispersing member comprises a dispersing grid member.

3. The flooded evaporator (100) according to claim 2, characterized in that The liquid guiding groove (231) extends towards the exhaust port (13).

4. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that The liquid guiding member (23) comprises a plurality of liquid guiding grooves (231), and all the liquid guiding grooves (231) are arranged in sequence in a direction intersecting with the direction from the top of the shell (10) to the bottom of the shell (10).

5. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that The liquid guiding member (23) comprises a first liquid guiding plate (232) and a second liquid guiding plate (233), and the first liquid guiding plate (232) and the second liquid guiding plate (233) are arranged at an included angle to form the liquid guiding groove (231).

6. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that ​ 7. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that ​ 8. The flooded evaporator (100) according to claim 7, characterized in that At least one of the first liquid guide plate (232) and the second liquid guide plate (233) is arranged to be inclined towards the steam inlet end (21) along a direction from a bottom of the shell (10) to a top of the shell (10).

9. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that The first gas flow through hole (234) includes a plurality of first gas flow through holes (234), and all the first gas flow through holes (234) are arranged in a spaced manner along an extension direction of the liquid guide (23).

10. The flooded evaporator (100) according to claim 4, characterized in that The gas-liquid separation structure (20) further includes a first liquid blocking member (24), and the first liquid blocking member (24) is located downstream of the dispersing member (22) or the liquid guide (23) along a flow direction of the mixed refrigerant in the gas-liquid separation structure (20). The first liquid blocking member (24) is configured to block the liquid refrigerant from entering the exhaust port (13).

11. The flooded evaporator (100) according to claim 10, characterized in that The first liquid blocking member (24) is provided with a plurality of third gas flow through holes (241), and all the third gas flow through holes (241) are arranged in a spaced manner.

12. The flooded evaporator (100) of claim 10, characterized in that, In the extension direction of the dispersing member (22) or the liquid guide (23), the first liquid blocking member (24) is arranged at one end of the dispersing member (22) or the liquid guide (23).

13. The flooded evaporator (100) of claim 10, wherein, The shell (10) defines a gas-liquid separation cavity (165) in the containing cavity (11), and the gas-liquid separation structure (20) is arranged in the gas-liquid separation cavity (165). The first liquid blocking member (24) is configured to divide the gas-liquid separation cavity (165) into a first cavity (1651) and a second cavity (1652) in sequence along a flow direction of the mixed refrigerant in the gas-liquid separation structure (20). The liquid guide (23) and / or the dispersing member (22) are arranged in the first cavity (1651), and the exhaust port (13) is in communication with the second cavity (1652).

14. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that The gas-liquid separation structure (20) has an air outlet passage (25), one end of the air outlet passage (25) is provided with an air inlet (251), and the other end is in communication with the exhaust port (13). The air inlet (251) is arranged away from the steam inlet end (21).

15. The flooded evaporator (100) according to any one of claims 1 to 3, characterized in that The shell (10) defines a gas-liquid separation cavity (165) in the containing cavity (11), and the gas-liquid separation structure (20) is arranged in the gas-liquid separation cavity (165). A cavity bottom wall of the gas-liquid separation cavity (165) is provided with a plurality of liquid discharge ports (166), and all the liquid discharge ports (166) are arranged in a spaced manner.

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