Liquid-submerged evaporator and water chiller

Abstract

The application discloses a flooded evaporator and a water chilling unit, and belongs to the technical field of evaporators. The flooded evaporator comprises a shell, heat exchange pipes, a liquid blocking plate and a rotating piece. An inlet and an outlet are formed on the shell, and the inlet and the outlet are respectively communicated with the inside of the shell. The inlet is used for allowing liquid refrigerant to flow into the inside of the shell, and the outlet is used for allowing gaseous refrigerant to flow out of the inside of the shell. The heat exchange pipes are arranged along the length direction of the shell, and at least part of the heat exchange pipes are arranged in the inside of the shell to heat the refrigerant. The liquid blocking plate is arranged in the shell, and is arranged between the heat exchange pipes and the outlet and close to the outlet. The rotating piece is rotationally connected to the liquid blocking plate and is located on the flow path of the gaseous refrigerant, and is used for carrying out gas-liquid separation on the gaseous refrigerant passing through the rotating piece. In the application, centrifugal force is generated by rotating the rotating piece to carry out gas-liquid separation on the gaseous refrigerant passing through the rotating piece, so that liquid beads are prevented from entering the compressor and damaging the compressor.

Description

Technical Field

[0001] This application belongs to the technical field of evaporators, and particularly relates to a flooded evaporator and a chiller unit. Background Technology

[0002] Heat exchangers are crucial components of refrigeration systems, enabling the refrigerant to change state through heat exchange. Specifically, the evaporator, as a key heat exchanger in the refrigeration system, is responsible for absorbing heat from the object being cooled, causing the liquid refrigerant to evaporate into a gaseous state, thereby providing cooling capacity to the system. The condenser, on the other hand, cools the high-temperature, high-pressure gaseous refrigerant discharged from the compressor, causing it to condense into a liquid state and release heat.

[0003] After the liquid refrigerant evaporates into a gaseous state in the evaporator, it needs to flow into the compressor for compression to start the next refrigeration cycle. When the gaseous refrigerant carries liquid into the compressor, it can reduce the compressor's gas delivery capacity, or even cause severe vibration and noise, or damage the compressor.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] To address the shortcomings of related technologies, this application provides a flooded evaporator and chiller unit that uses a rotating component at the outlet to separate the gaseous refrigerant passing through it into gas and liquid phases. This effectively reduces the probability of damage to the compressor and motor, ensuring the chiller unit's cooling performance.

[0006] This application provides a flooded evaporator, comprising: The shell has an inlet and an outlet, which are connected to the interior of the shell. The inlet is used to allow liquid refrigerant to flow into the interior of the shell, and the outlet is used to allow gaseous refrigerant to flow out of the interior of the shell. Heat exchange tubes are arranged along the length of the shell, and at least part of the heat exchange tubes pass through the shell and are located inside the shell to heat the refrigerant; A liquid baffle is installed inside the housing. The liquid baffle is located between the heat exchange tube and the outlet and is positioned close to the outlet. It is used to block the gaseous refrigerant flowing towards the outlet. A rotating component is rotatably connected to a baffle plate and located in the flow path of the gaseous refrigerant, used to perform gas-liquid separation on the gaseous refrigerant passing through it.

[0007] In the technical solution, by placing the heat exchange tube close to the inlet, the heat exchange tube can heat the liquid refrigerant entering the shell in a timely manner, so that the liquid refrigerant can be quickly converted into gaseous refrigerant; by setting a rotating component, the rotation of the rotating component generates centrifugal force, so that the gaseous refrigerant can be separated into gas and liquid under the action of centrifugal force, thereby removing liquid droplets carried in the gaseous refrigerant and preventing liquid droplets from entering the compressor and damaging the compressor.

[0008] In some embodiments of this application, a connecting pipe is connected to the outlet, and the end of the rotating component away from the baffle plate extends into the connecting pipe.

[0009] In the technical solution, by connecting a connecting pipe at the outlet, a portion of the rotating component extends into the connecting pipe, causing the liquid droplets to be thrown onto the pipe wall under centrifugal force, and then flow back into the casing along the pipe wall, thus avoiding refrigerant waste.

[0010] In some embodiments of this application, the rotating component includes a separating part and a connecting shaft. The separating part is disposed on the outer periphery of the connecting shaft, and the connecting shaft is rotatably connected to the baffle plate.

[0011] In the technical solution, the separation section is located on the outer periphery of the connecting shaft so that it comes into contact with the gaseous refrigerant, thereby separating the liquid droplets carried in the gaseous refrigerant. The connecting shaft is rotatably connected to the baffle plate so that the connecting shaft provides rotational support for the separation section, ensuring that the rotating part can rotate smoothly under the impact of the gaseous refrigerant flow. This allows the separation section to effectively apply centrifugal force and other effects to the gaseous refrigerant, achieving gas-liquid separation and ensuring the working reliability of the rotating part and the gas-liquid separation efficiency.

[0012] In some embodiments of this application, the separation section is spirally arranged along the axial direction of the connecting shaft, and the spiral direction of the separation section corresponds to the flow direction of the gaseous refrigerant through the separation section.

[0013] In the technical solution, the separation section is designed in a spiral shape, and its spiral direction is matched with the airflow direction. This allows the gaseous refrigerant to flow smoothly along the spiral direction when passing through the separation section, reducing flow resistance and preventing excessive resistance from affecting the normal flow of refrigerant and the overall operating efficiency of the evaporator. At the same time, the spiral-shaped separation section can create a stronger centrifugal force on the gaseous refrigerant, making it easier for the liquid refrigerant in the gaseous refrigerant to be thrown to the edge of the separation section and collected, further improving the effect and speed of gas-liquid separation and ensuring the gas-liquid separation effect.

[0014] In some embodiments of this application, the orthographic projection of the outlet in its centerline direction is located on the baffle plate.

[0015] In the technical solution, by positioning the orthogonal projection of the outlet along its setting direction on the baffle plate, the baffle plate can cover the outlet. When the gaseous refrigerant flows towards the outlet, the baffle plate can block it, effectively intercepting the liquid refrigerant carried in the gaseous refrigerant, preventing the liquid refrigerant from crossing the baffle plate and entering the outlet, further increasing the liquid blocking effect, increasing the gas-liquid separation efficiency of the evaporator, and avoiding liquid refrigerant entering the compressor and causing compressor damage.

[0016] In some embodiments of this application, the baffle plate is provided with bent portions on both sides along the length of the housing, and the bent portions are in contact with the inner wall of the housing so that the baffle plate and the housing together define a flow channel for gaseous refrigerant to flow into the outlet.

[0017] In the technical solution, by setting bent portions on both sides of the baffle plate along the length of the shell, and the bent portions contacting the inner wall of the shell, the baffle plate and the shell together define a flow channel for gaseous refrigerant to flow into the outlet. The flow channel guides the flow direction of the gaseous refrigerant, preventing it from diffusing randomly within the shell, ensuring that the gaseous refrigerant flows orderly to the outlet, reducing energy loss during the flow process, improving the refrigerant flow efficiency, and enabling the baffle plate to effectively block the gaseous refrigerant.

[0018] In some embodiments of this application, the baffle plate includes a body and a bent portion. One side of the body is disposed facing the outlet, and the other side of the body is disposed facing the heat exchange tube. The bent portion is disposed along the length of the heat exchange tube and is disposed on opposite sides of the body. The side of the bent portion away from the body is disposed in the direction closer to the outlet.

[0019] In the technical solution, by positioning one side of the body towards the outlet and the other side towards the heat exchange tube, the baffle plate can block the gaseous refrigerant flowing from the heat exchange tube towards the outlet. By positioning the bent portions along the length of the heat exchange tube on opposite sides of the body, with the side furthest from the body facing towards the outlet, the baffle plate can not only block the liquid refrigerant carried in the gaseous refrigerant but also guide the gaseous refrigerant to flow more smoothly towards the outlet, reducing flow resistance. At the same time, the bent portions also enhance the overall structural strength of the baffle plate, preventing deformation due to long-term stress and ensuring its long-term stable use.

[0020] In some embodiments of this application, a fixing plate is provided inside the housing. The fixing plate is located on the side of the baffle plate away from the outlet, and the fixing plate is provided with a first through portion for the heat exchange tube to pass through.

[0021] In the technical solution, a fixing plate is installed inside the shell to fix and support the heat exchange tube, preventing the heat exchange tube from shaking or shifting inside the shell due to factors such as refrigerant flow or its own weight. This ensures that the heat exchange tube always maintains a stable position and posture, thereby ensuring full contact between the heat exchange tube and the refrigerant and increasing the heat exchange efficiency of the heat exchange tube.

[0022] In some embodiments of this application, the inlet is located at the bottom of the shell, the outlet is located at the top of the shell, the heat exchange tube is located above the inlet and below the outlet, and the heat exchange tube is located closer to the inlet than the outlet; the baffle is located below the outlet.

[0023] In the technical solution, by rationally setting the positions of the inlet, outlet, heat exchange tube and baffle, the liquid refrigerant enters from below and immerses the heat exchange tube. The bubbles generated by heat absorption rise naturally. During the rise, the steam is effectively separated by the baffle and rotating parts above. Finally, the dry steam flows out from the top outlet. The arrangement of the various components of the evaporator utilizes physical principles to maximize energy efficiency.

[0024] In addition, this application also provides a chiller unit, comprising: The evaporator is the flooded evaporator described above; Condenser; The compressor, condenser, and evaporator together form a refrigerant circulation loop, in which the refrigerant circulates.

[0025] In the technical solution, by selecting the above-mentioned flooded evaporator, the liquid content carried by the gaseous refrigerant when it flows into the compressor is reduced, so as to avoid damage to the compressor caused by liquid in the gaseous refrigerant and ensure the cooling effect of the chiller unit.

[0026] In the above embodiments, a flooded evaporator and chiller unit are provided with a rotating component. The rotating component generates centrifugal force when the gaseous refrigerant flows through it. The centrifugal force is used to separate the gaseous refrigerant from the liquid, so as to remove the liquid droplets carried in the gaseous refrigerant and prevent the gaseous refrigerant carrying liquid droplets from entering the compressor and causing damage to the compressor. This ensures that the evaporator can guarantee the cooling effect of the chiller unit. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of one embodiment of the flooded evaporator in this application; Figure 2 This is a schematic diagram of the shell structure in one embodiment of the flooded evaporator in this application; Figure 3 This is a structural schematic diagram of another embodiment of the flooded evaporator in this application; Figure 4 yes Figure 3A schematic diagram of the AA section after being rotated 90° counterclockwise. Figure 5 yes Figure 3 BB section view; Figure 6 This is a schematic diagram of the structure of the heat exchange tubes installed on the fixed plate and the end plate in one embodiment of the flooded evaporator in this application; Figure 7 This is a schematic diagram of the structure of the fixing plate in one embodiment of the flooded evaporator in this application; Figure 8 This is a schematic diagram of the end plate structure in the first embodiment of the flooded evaporator in this application; Figure 9 This is a schematic diagram of the baffle plate in the first embodiment of the flooded evaporator in this application; Figure 10 This is a schematic diagram of the structure of the first embodiment of the flooded evaporator in this application when the rotating part is installed on the baffle plate; Figure 11 This is a schematic diagram of the rotating component in the first embodiment of the flooded evaporator in this application.

[0028] In the diagram, 100 is the shell; 200 is the rotating part; 300 is the connecting pipe; and 400 is the heat exchange tube. 101. Outlet; 102. Receiving cavity; 110. Cylinder body; 120. End plate; 130. Fixing plate; 140. Liquid baffle; 121. Second through section; 131. First through section; 132. Avoidance gap; 141. Body; 142. Bending section; 210. Separation section; 220. Connecting shaft. Detailed Implementation

[0029] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0030] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0031] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0032] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0033] Centrifugal compressors and magnetic levitation centrifugal chillers are widely used in various refrigeration equipment, especially in large-scale central air conditioning systems, due to their excellent energy-saving effects and high refrigeration performance. However, centrifugal compressors and magnetic levitation centrifugal chillers are quite sensitive to liquid carryover during intake, which may cause a decrease in gas delivery and reduce the system's cooling capacity. In severe cases, it may cause violent compressor vibration and generate harsh noise, leading to accelerated wear and even breakage of key mechanical components such as bearings, pistons, and connecting rods, ultimately resulting in compressor damage. In addition, when the compressor starts with liquid carryover, the lubricating oil will foam, severely affecting the lubrication effect of the bearings, causing short circuits in the motor windings, and directly burning out the motor.

[0034] In related technologies, various methods are used to prevent liquid carryover during air intake, such as installing baffles, setting up gas-liquid filters, and increasing the heat exchange area. However, the problem of liquid carryover during air intake has not been effectively solved.

[0035] Based on this, this application provides a flooded evaporator that uses a rotating component 200 to generate centrifugal force when the gaseous refrigerant flows through it. This centrifugal force is used to separate the gaseous refrigerant from liquid, thereby removing liquid droplets carried in the gaseous refrigerant. This reduces the amount of liquid carried in the gaseous refrigerant and prevents gaseous refrigerant carrying liquid droplets from entering the compressor and causing damage to the compressor. This ensures that the evaporator can guarantee the cooling effect of the chiller unit.

[0036] The flooded evaporator provided in this application can have various implementation forms. Figures 1-2 This is a specific embodiment of the flooded evaporator of this application.

[0037] like Figure 1 and Figure 2As shown, the flooded evaporator includes a housing 100, with a receiving cavity 102 defined inside the housing 100. An inlet (not shown in the figure) is formed on the housing 100, which communicates with the receiving cavity 102 and is used to allow liquid refrigerant to flow into the housing 100. An outlet 101 is formed on the housing 100, which communicates with the receiving cavity 102 and is used to allow gaseous refrigerant to flow out of the housing 100.

[0038] Since the density of gaseous refrigerant is usually less than that of liquid refrigerant, the refrigerant will flow upward when it changes from liquid to gas. In some embodiments of this application, the height of outlet 101 is higher than the height of inlet so that the gaseous refrigerant can flow better to outlet 101 and out of outlet 101.

[0039] In some embodiments, such as Figure 4 As shown, the outlet 101 is located at the top of the housing 100, and the inlet is located at the bottom of the housing 100, so that the gaseous refrigerant can flow better to the outlet 101 and out of the outlet 101.

[0040] like Figure 5 and Figure 6 As shown, the flooded evaporator includes heat exchange tubes 400, which are arranged along the length of the shell 100. At least a portion of the heat exchange tubes 400 are located inside the shell 100 to heat the refrigerant inside the shell 100, thereby changing the refrigerant inside the shell 100 from a liquid state to a gaseous state.

[0041] Compared to outlet 101, heat exchange tube 400 is positioned closer to the inlet so that heat exchange tube 400 can heat the liquid refrigerant flowing into the housing 100 from the inlet more quickly and effectively.

[0042] The heat exchange tube 400 is located above the inlet and below the outlet 101, so that the liquid refrigerant can be heated by the heat exchange tube 400 into gaseous refrigerant and then flow out of the housing 100 through the outlet 101.

[0043] It should be noted that the refrigerant inside the heat exchange tube 400 can be water or other fluids. This is a conventional technique in the field of flooded evaporators and will not be elaborated further here.

[0044] In some embodiments, multiple heat exchange tubes 400 are provided, and the multiple heat exchange tubes 400 are arranged in parallel to increase the contact area between the heat exchange tubes 400 and the refrigerant, thereby increasing the heating effect of the heat exchange tubes 400 on the refrigerant.

[0045] like Figures 4-6As shown, a fixing plate 130 is provided inside the housing 100. The fixing plate 130 has a first through part 131 for the heat exchange tube 400 to pass through, so as to support and fix the heat exchange tube 400 by using the fixing plate 130, ensuring the stability and reliability of the heat exchange tube 400 inside the housing 100, thereby ensuring the heating effect of the heat exchange tube 400 on the refrigerant.

[0046] like Figure 5 and Figure 6 As shown, multiple fixing plates 130 are provided, and the multiple fixing plates 130 are arranged along the length direction of the shell 100 to increase the support and fixing effect on the heat exchange tube 400.

[0047] In some embodiments, such as Figure 7 As shown, the first through portion 131 is a through hole provided on the fixing plate 130, and the opening direction of the through hole is set along the length direction of the housing 100.

[0048] like Figure 4 and Figure 7 As shown, the bottom of the fixing plate 130 is provided with an avoidance notch 132. The avoidance notch 132 can prevent the fixing plate 130 from blocking the inlet when it is located at the inlet. On the other hand, the avoidance notch 132 can reduce the contact area between the fixing plate 130 and the inner wall of the housing 100, avoid excessive constraint between the fixing plate 130 and the inner wall of the housing 100, and facilitate the cooperation between the fixing plate 130 and the inner wall of the housing 100.

[0049] To facilitate the installation of the fixing plate 130 inside the housing 100, the housing 100 is designed as a split structure. After the fixing plate 130 is installed in the receiving cavity 102, the housing 100 is then assembled to ensure the sealing of the receiving cavity 102 and prevent refrigerant leakage.

[0050] Specifically, such as Figure 2 and Figure 3 As shown, the housing 100 includes a cylindrical body 110, a fixing plate 130 disposed inside the cylindrical body 110, the fixing plate 130 being connected to the cylindrical body 110, and an opening at least one end of the cylindrical body 110 in the axial direction.

[0051] like Figure 2 and Figure 3 As shown, the housing 100 includes an end plate 120, which is connected to the cylinder 110 and located at the opening of the cylinder 110 to seal the opening of the cylinder 110 and prevent the refrigerant inside the housing 100 from leaking from the opening.

[0052] When the two ends of the cylinder 110 are respectively provided with openings, the end plates 120 are provided as two, and the two end plates 120 are respectively provided at the openings at both ends of the shell 100.

[0053] like Figure 8As shown, the end plate 120 is provided with a second through portion 121 for the heat exchange tube 400 to pass through, and at least part of the heat exchange tube 400 passes through the end plate 120 and is located inside the housing 100.

[0054] It should be noted that the end plate 120 can also provide support and fixation for the heat exchange tube 400 to ensure the stability and reliability of the heat exchange tube 400 inside the housing 100, thereby ensuring the heating effect of the heat exchange tube 400 on the refrigerant.

[0055] In some embodiments, the cylinder 110 is cylindrical, and the length of the shell 100 is arranged along the axial direction of the cylinder 110; the height of the shell 100 is arranged along the vertical direction.

[0056] like Figure 4 and Figure 5 As shown, a baffle plate 140 is provided in the receiving cavity 102. The baffle plate 140 is located in the flow path of the gaseous refrigerant and is used to block the gaseous refrigerant to reduce the liquid content of the gaseous refrigerant flowing out of the evaporator. The baffle plate 140 is connected to the cylinder 110.

[0057] One side of the baffle plate 140 is positioned facing the outlet 101, and the other side of the baffle plate 140 is positioned facing the side of the partition away from the superheated tube. There is a certain distance between the baffle plate 140 and the outlet 101 to avoid the baffle plate 140 completely blocking the outlet 101, thereby ensuring that the gaseous refrigerant can effectively flow out of the housing 100.

[0058] The orthographic projection of outlet 101 along its setting direction is located on baffle 140, so that baffle 140 can cover outlet 101, thereby increasing the baffle 140's liquid-blocking effect on gaseous refrigerant flowing towards outlet 101.

[0059] The two ends of the baffle plate 140 are correspondingly arranged with the two ends of the housing 100. The two ends of the baffle plate 140 and the corresponding ends of the housing 100 are respectively a certain distance apart, so that the gaseous refrigerant can flow into the outlet 101 from the two ends of the baffle plate 140, making the flow path of the refrigerant more complicated, so as to further reduce the liquid content of the gaseous refrigerant.

[0060] In some embodiments, such as Figure 4 As shown, the baffle plate 140 is bent away from the heat exchange tube 400 on both sides along the length of the housing 100. The baffle plate 140 is connected to the housing 100 on both sides in the width direction so that the baffle plate 140 is set inside the housing 100. The middle part of the baffle plate 140 is also a certain distance away from the outlet 101 to ensure that the gaseous refrigerant can flow out from the outlet 101 in a timely and effective manner.

[0061] It should be noted that in this embodiment, the width direction of the baffle plate 140 is in the same direction as the width direction of the housing 100, and the length direction of the baffle plate 140 is in the same direction as the length direction of the housing 100.

[0062] When the gaseous refrigerant flows toward the outlet 101, the baffle plate 140 can block it, effectively intercepting the liquid refrigerant carried in the gaseous refrigerant, preventing the liquid refrigerant from crossing the baffle plate 140 and entering the outlet 101, further increasing the liquid blocking effect, increasing the gas-liquid separation efficiency of the evaporator, and avoiding liquid refrigerant entering the compressor and causing compressor damage.

[0063] Because the density of liquid refrigerant is greater than that of gaseous refrigerant, the inertia of liquid refrigerant is greater than that of gaseous refrigerant. When the gas-liquid mixture flows towards the baffle plate 140, the low-density, low-inertia gaseous refrigerant can easily change its flow direction, while the high-density, high-inertia liquid droplets are difficult to follow the gaseous refrigerant's direction and will impact the surface of the baffle plate 140 due to inertia, thus achieving gas-liquid separation. After impacting the baffle plate 140, the tiny liquid droplets coalesce into larger droplets on the surface of the baffle plate 140 through surface tension. These larger droplets will drip down under the action of gravity and converge with the liquid refrigerant inside the casing 100.

[0064] like Figure 9 As shown, the baffle plate 140 includes a body 141, one side of which is disposed facing the outlet 101 and the other side of which is disposed facing the heat exchange tube 400. The body 141 is used to block the outlet 101.

[0065] In some embodiments, the body 141 is welded to the inner wall of the cylinder 110.

[0066] like Figure 9 As shown, the baffle plate 140 includes a bent portion 142, which is arranged along the length direction of the housing 100 and is located on opposite sides of the body 141; the side of the bent portion 142 away from the body 141 is arranged towards the outlet 101.

[0067] In some embodiments, the body 141 and the bent portion 142 are formed by bending the same sheet material.

[0068] In this embodiment, as Figure 4 As shown, the inlet is located at the bottom of the housing 100, and the outlet 101 is located at the top of the housing 100. The inlet and outlet 101 are arranged along the height direction of the housing 100. The gaseous refrigerant flows approximately along the height direction of the housing 100. The heat exchange tube 400 and the baffle plate 140 are arranged from bottom to top along the height direction of the housing 100, and the baffle plate 140 is located below the outlet 101.

[0069] like Figure 4 and Figure 5 As shown, the flooded evaporator includes a rotating component 200, which is rotatably connected to the body 141 and located in the flow path of the gaseous refrigerant, for gas-liquid separation of the gaseous refrigerant passing through it.

[0070] When the gaseous refrigerant passes through the rotating component 200, it drives the rotating component 200 to rotate. The rotation of the rotating component 200 generates centrifugal force, which causes the liquid droplets carried in the gaseous refrigerant to separate from the gaseous refrigerant under the action of centrifugal force, thereby reducing the number of liquid droplets carried in the gaseous refrigerant.

[0071] When the gaseous refrigerant carries liquid droplets past the rotating part 200, because the mass and inertia of the liquid droplets are much greater than those of the gaseous refrigerant, the liquid droplets are thrown to the periphery of the rotating part 200 under the centrifugal force generated by the high-speed rotation, thus separating from the gaseous refrigerant; the gaseous refrigerant, due to its smaller inertia, continues to flow along the mainstream direction, ultimately achieving gas-liquid separation.

[0072] like Figure 1 , Figure 2 and Figure 4 As shown, the housing 100 is connected to a connecting pipe 300, which is connected to the outlet 101. The end of the rotating component 200 away from the baffle plate 140 extends into the connecting pipe 300. Under the action of centrifugal force, the liquid droplets are thrown onto the wall of the connecting pipe 300 and then flow back into the housing 100 along the pipe wall, thus avoiding refrigerant waste.

[0073] like Figure 10 and Figure 11 As shown, the rotating member 200 includes a separation section 210, which is used to contact the gaseous refrigerant to separate liquid droplets carried in the gaseous refrigerant.

[0074] like Figure 10 and Figure 11 As shown, the rotating component 200 includes a connecting shaft 220, which is rotatably connected to the baffle plate 140. The connecting shaft 220 provides rotational support for the separation section 210. The separation section 210 is located on the outer periphery of the connecting shaft 220, ensuring that the rotating component 200 can rotate smoothly under the impact of the gaseous refrigerant flow. This allows the separation section 210 to effectively apply centrifugal force and other effects to the gaseous refrigerant, thereby achieving gas-liquid separation and ensuring the working reliability and gas-liquid separation efficiency of the rotating component 200.

[0075] like Figure 10 and Figure 11As shown, the separation section 210 is spirally arranged along the axial direction of the connecting shaft 220. The spiral direction of the separation section 210 corresponds to the flow direction of the gaseous refrigerant through the separation section 210, so that the gaseous refrigerant can flow smoothly along the spiral direction when flowing through the separation section 210, reducing flow resistance and avoiding the impact of excessive resistance on the normal flow of refrigerant and the overall operating efficiency of the evaporator. At the same time, the spiral separation section 210 can form a stronger centrifugal force on the gaseous refrigerant, making it easier for the liquid refrigerant in the gaseous refrigerant to be thrown to the edge of the separation section 210 and collected, further improving the effect and speed of gas-liquid separation and ensuring the gas-liquid separation effect.

[0076] The spiral direction of the separation section 210 is the same as the flow direction of the gaseous refrigerant, so as to reduce the flow resistance of the separation section 210 to the gaseous refrigerant.

[0077] In some embodiments, the separating part 210 and the connecting shaft 220 are integrally formed to facilitate the connection between the separating part 210 and the connecting shaft 220, and to increase the firmness of the connection between the separating part 210 and the connecting shaft 220.

[0078] The liquid removal principle of the above-mentioned flooded evaporator is as follows: Liquid refrigerant enters the shell 100 through the inlet and is heated into a gaseous state by the heat exchange tube 400. The gaseous refrigerant flows upward toward the outlet 101. The flow direction of the gaseous refrigerant is changed by the baffle plate 140, and the liquid droplets carried in the gaseous refrigerant will collide with the baffle plate 140 and be separated from the gaseous refrigerant, thereby achieving the initial gas-liquid separation of the gaseous refrigerant. After the initial gas-liquid separation, the gaseous refrigerant flows through the rotating part 200 from the outlet 101. The gaseous refrigerant drives the rotating part 200 to rotate. Under the action of centrifugal force, the liquid droplets remaining in the gaseous refrigerant are thrown toward the connecting pipe 300, thereby achieving the secondary gas-liquid separation of the gaseous refrigerant.

[0079] Based on the above-mentioned flooded evaporator, this application also provides a chiller unit, which, by configuring the above-mentioned flooded evaporator, reduces the liquid content carried by the gaseous refrigerant when it flows into the compressor, avoids damage to the compressor caused by liquid carried in the gaseous refrigerant, and ensures the cooling effect of the chiller unit.

[0080] The chiller unit includes an evaporator, in which the refrigerant changes from a liquid to a gaseous state. The evaporator is a flooded evaporator as described above, to reduce the liquid droplets carried by the gaseous refrigerant when it flows out of the evaporator, thereby reducing the liquid content of the gaseous refrigerant.

[0081] A chiller unit includes a condenser, in which the refrigerant changes from a gaseous state to a liquid state.

[0082] A chiller unit includes a compressor, and the compressor, condenser and evaporator together form a refrigerant circulation loop, in which the refrigerant circulates.

[0083] The above-mentioned chiller units can effectively avoid liquid carryover during air intake, effectively reduce the frequency and probability of compressor damage, increase the reliability of the chiller unit, and ensure the cooling effect of the unit.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0085] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A flooded evaporator, characterized in that, include: A housing having an inlet and an outlet, the inlet and the outlet respectively communicating with the interior of the housing; the inlet is for supplying liquid refrigerant to flow into the interior of the housing, and the outlet is for supplying gaseous refrigerant to flow out of the interior of the housing; A heat exchange tube is provided along the length of the shell, and at least a portion of the heat exchange tube passes through the shell and is disposed inside the shell to heat the refrigerant; A liquid baffle is disposed inside the housing and located between the heat exchange tube and the outlet, and is positioned close to the outlet, for blocking the gaseous refrigerant flowing toward the outlet. A rotating component, rotatably connected to the baffle plate and located in the flow path of the gaseous refrigerant, is used to perform gas-liquid separation on the gaseous refrigerant passing through it.

2. The flooded evaporator according to claim 1, characterized in that, The outlet is connected to a connecting pipe, and the end of the rotating component away from the baffle plate extends into the connecting pipe.

3. The flooded evaporator according to claim 1, characterized in that, The rotating component includes a separating part and a connecting shaft. The separating part is located on the outer periphery of the connecting shaft, and the connecting shaft is rotatably connected to the baffle plate.

4. The flooded evaporator according to claim 3, characterized in that, The separation section is spirally arranged along the axial direction of the connecting shaft, and the spiral direction of the separation section corresponds to the flow direction of the gaseous refrigerant through the separation section.

5. The flooded evaporator according to claim 1, characterized in that, The orthographic projection of the outlet in its centerline direction is located on the baffle plate.

6. The flooded evaporator according to claim 1, characterized in that, The baffle plate has bends on both sides along the length of the housing. The bends are in contact with the inner wall of the housing so that the baffle plate and the housing together define a flow channel for gaseous refrigerant to flow into the outlet.

7. The flooded evaporator according to claim 1, characterized in that, The baffle plate includes a body and a bent portion. One side of the body is disposed facing the outlet, and the other side of the body is disposed facing the heat exchange tube. The bent portion is disposed along the length of the heat exchange tube and is disposed on opposite sides of the body. The side of the bent portion away from the body is disposed in the direction closer to the outlet.

8. The flooded evaporator according to claim 1, characterized in that, The housing is provided with a fixing plate, which is located on the side of the baffle plate away from the outlet. The fixing plate is provided with a first through-hole for the heat exchange tube to pass through.

9. The flooded evaporator according to claim 1, characterized in that, The inlet is located at the bottom of the housing, the outlet is located at the top of the housing, the heat exchange tube is located above the inlet and below the outlet, and the heat exchange tube is located closer to the inlet than the outlet; the baffle is located below the outlet.

10. A water chiller unit, characterized in that, include: An evaporator, which is a flooded evaporator as described in any one of claims 1-9; Condenser; The compressor, the condenser, and the evaporator together form a refrigerant circulation loop, in which the refrigerant circulates.

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