Liquid-submerged evaporator and water chiller unit

Abstract

The application discloses a flooded evaporator and a water chilling unit, and belongs to the technical field of refrigeration. The flooded evaporator comprises a shell, heat exchange pipes, liquid blocking plates and bending parts. An inlet and an outlet are formed on 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 inside the shell through the shell to heat the refrigerant inside the shell. The liquid blocking plates are arranged inside the shell and located between the inlet and the outlet. The length direction of the liquid blocking plates is arranged along the length direction of the shell, one end of the height direction of the liquid blocking plates is arranged towards the outlet, and the other end of the height direction of the liquid blocking plates is arranged towards the heat exchange pipes. A plurality of liquid blocking plates are arranged along the thickness direction of the liquid blocking plates. There is a gap between adjacent liquid blocking plates for the gaseous refrigerant to pass through. The bending parts are arranged on the liquid blocking plates and towards the gap, and are used for blocking the liquid of the gaseous refrigerant passing through the gap to reduce the liquid content in the gaseous refrigerant.

Description

Technical Field

[0001] This application belongs to the field of refrigeration technology, 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 that provides a baffle plate inside the evaporator and a bending part on the surface of the baffle plate, so that the gaseous refrigerant will collide with the baffle plate multiple times when it flows over the surface of the baffle plate, thereby separating the liquid carried in the gaseous refrigerant from the gaseous refrigerant.

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

[0007] 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.

[0008] 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 inside the shell;

[0009] A liquid baffle is located inside the housing, between the inlet and the outlet. The length of the liquid baffle is along the length of the housing, one end of the liquid baffle in the height direction faces the outlet, and the other end of the liquid baffle in the height direction faces the heat exchange tube. Multiple liquid baffles are provided and arranged along the thickness direction of the liquid baffles. There are gaps between adjacent liquid baffles to allow gaseous refrigerant to pass through.

[0010] The bending section is located on the liquid baffle and is positioned towards the gap to block the gaseous refrigerant passing through the gap.

[0011] In this technical solution, baffles are installed inside the casing, positioned between the inlet and outlet. Multiple baffles are used, allowing gaseous refrigerant to pass through the gaps between adjacent baffles. This baffles effectively block the liquid flow of gaseous refrigerant from the inlet to the outlet, thereby reducing the liquid content in the gaseous refrigerant exiting the evaporator. Furthermore, bending sections are incorporated into the baffles, located within the gaps between adjacent baffles. These bending sections further divide the gaseous refrigerant flowing through the gaps, causing multiple impacts between the refrigerant and the baffles and bending sections as it passes through the gaps. This reduces the liquid content in the gaseous refrigerant and enhances the baffles' effectiveness in blocking liquid.

[0012] In some embodiments, the bent portions on different baffles are located on the same side of the corresponding baffles;

[0013] And / or, the middle portion of the baffle is bent toward the adjacent baffle to form a bend.

[0014] In the technical solution, the bent portions on different baffles are located on the same side of the corresponding baffles to avoid a disorderly arrangement of the bent portions. Although a disorderly arrangement of the bent portions can still have a good liquid-blocking effect on gaseous refrigerant, the flow velocity of the gas will decrease after passing through the disorderly arranged bent portions, which will reduce the heat exchange efficiency of the evaporator. By bending the middle part of the baffle towards the adjacent baffle to form a bent portion, not only can the shape of the baffle on the refrigerant flow path be made more complex, thereby increasing the liquid-blocking effect on gaseous refrigerant, but the production method of the bent portion is simple and the connection between the bent portion and the baffle is firm.

[0015] In some embodiments, a connecting plate is provided inside the housing, the length direction of the connecting plate is arranged along the arrangement direction of the baffles, and the connecting plate is connected to multiple baffles.

[0016] In the technical solution, a connecting plate is set so that the length direction of the connecting plate is along the arrangement direction of the liquid baffles, so that the connecting plate connects multiple liquid baffles into one unit, thereby ensuring the firmness and reliability of the liquid baffles installed in the housing.

[0017] In some embodiments, openings are provided at both ends of the shell along its length to allow a baffle plate to be disposed inside the shell; end plates are provided at the openings to seal the openings; the two ends of the baffle plate along its length are correspondingly connected to the two end plates.

[0018] In the technical solution, openings are provided at both ends of the housing to facilitate the placement of the baffle plate inside the housing; end plates are provided at both ends of the housing to seal the openings at both ends of the housing, thereby preventing refrigerant leakage inside the housing and ensuring the heat exchange effect of the evaporator and the liquid-blocking effect of the baffle plate.

[0019] In some embodiments, a baffle is provided inside the housing for secondary liquid blocking of gaseous refrigerant; one side of the baffle is set towards the outlet, and the other side of the baffle is set towards the liquid blocking plate, and there is a certain distance between the baffle and the outlet.

[0020] In the technical solution, a baffle is set with one side facing the outlet and the other side facing the liquid baffle. This allows the baffle to perform secondary liquid baffle on the gaseous refrigerant, thereby ensuring the liquid baffle effect of the evaporator on the gaseous refrigerant and reducing the liquid content of the gaseous refrigerant flowing out of the evaporator. A certain distance is maintained between the baffle and the outlet to prevent the baffle from completely blocking the outlet.

[0021] In some embodiments, the baffle is arranged along the length of the housing, and the two ends of the baffle are respectively a certain distance from the corresponding ends of the housing; the two sides of the baffle arranged along the length of the housing are bent away from the liquid baffle, and the two sides of the baffle are connected to the housing.

[0022] In the technical solution, by ensuring that both ends of the baffle are at a certain distance from the corresponding ends of the housing, the gaseous refrigerant can flow from both ends of the baffle into the outlet, avoiding the baffle completely blocking the outlet. By making the flow path of the refrigerant more complex, the liquid content of the gaseous refrigerant is further reduced. By bending both sides of the baffle towards the outlet and connecting both sides of the baffle to the housing to fix the baffle, the baffle can be set directly opposite the outlet and at a certain distance from the outlet, simplifying the baffle setting method.

[0023] In some embodiments, a fixing plate is provided inside the housing, and the fixing plate has a through-hole for the heat exchange tube to pass through.

[0024] In the technical solution, a fixing plate is set inside the shell, through which the heat exchange tubes pass. The fixing plate supports and fixes the heat exchange tubes, ensuring the stability and reliability of the heat exchange tubes inside the shell, thereby ensuring the heating effect of the heat exchange tubes on the refrigerant.

[0025] In some embodiments, the baffle plate is located below the outlet, and the heat exchange tube is located below the baffle plate.

[0026] In the technical solution, by placing the baffle plate below the outlet and the heat exchange tube below the baffle plate, the refrigerant, after being heated by the heat exchange tube and becoming a gaseous refrigerant, can flow out of the shell through the outlet after being blocked by the baffle plate, thus ensuring the liquid blocking efficiency of the gaseous refrigerant.

[0027] In some embodiments, the outlet is higher than the inlet, and the heat exchange tubes are positioned closer to the inlet.

[0028] In the technical solution, 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. By making the height of the outlet higher than the height of the inlet, the gaseous refrigerant can flow to the outlet and out of the outlet more effectively.

[0029] In addition, this application also provides a chiller unit, comprising:

[0030] The evaporator is the flooded evaporator described above;

[0031] Condenser;

[0032] The compressor, condenser, and evaporator together form a refrigerant circulation loop, in which the refrigerant circulates.

[0033] 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.

[0034] In the above embodiments, a flooded evaporator provides baffles along the flow path of the gaseous refrigerant and adds bends to the baffles to increase the complexity of their shape. This allows the gaseous refrigerant to collide with the baffles multiple times as it passes through the gaps between adjacent baffles, causing the liquid droplets in the gaseous refrigerant to separate from the gaseous phase, thereby reducing the amount of liquid in the gaseous refrigerant. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of one embodiment of the flooded evaporator in this application;

[0036] Figure 2 This is a structural schematic diagram of another embodiment of the flooded evaporator in this application;

[0037] Figure 3 yes Figure 2 A schematic diagram of the AA section after being rotated 90° counterclockwise.

[0038] Figure 4 yes Figure 3 BB section view;

[0039] Figure 5 This is a schematic diagram of the structure of the fixing plate in one embodiment of the flooded evaporator in this application;

[0040] Figure 6 This is a schematic diagram of the structure of the baffle plate installed on the end plate in one embodiment of the flooded evaporator in this application;

[0041] Figure 7 yes Figure 6Enlarged view of a portion of point A in the middle;

[0042] Figure 8 This is a schematic diagram of the baffle plate in one embodiment of the flooded evaporator in this application;

[0043] Figure 9 This is a schematic diagram of the structure when the connecting plate is connected to multiple baffles in the first embodiment of the flooded evaporator in this application;

[0044] Figure 10 This is a schematic diagram of the connecting parts in the first embodiment of the flooded evaporator in this application;

[0045] Figure 11 This is a schematic diagram of the end plate structure in the first embodiment of the flooded evaporator in this application;

[0046] Figure 12 This is a schematic diagram of the baffle structure in the first embodiment of the flooded evaporator in this application.

[0047] In the diagram, 110 is the housing; 120 is the end plate; 130 is the baffle; 140 is the connecting plate; 150 is the baffle; and 160 is the fixing plate.

[0048] 101. Exit; 102. Gap;

[0049] 121. Support part; 122. Through hole;

[0050] 131. Bending part; 132. Recessed part;

[0051] 141. Insertion section;

[0052] 161. Passing through. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] Based on this, this application provides a flooded evaporator and a chiller unit. By setting a baffle plate 130 inside the evaporator and setting a bending part 131 on the baffle plate 130, the gaseous refrigerant is effectively divided, so that the gaseous refrigerant collides with the baffle plate 130 and the bending part 131 multiple times when it flows through the baffle plate 130, thereby reducing the liquid in the gaseous refrigerant.

[0060] 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.

[0061] like Figure 1 As shown, the flooded evaporator includes a shell 110, an inlet (not shown in the figure) formed on the shell 110, the inlet being connected to the interior of the shell 110 for allowing liquid refrigerant to flow into the interior of the shell 110; and an outlet 101 formed on the shell 110, the outlet 101 being connected to the interior of the shell 110 for allowing gaseous refrigerant to flow out of the interior of the shell 110.

[0062] 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 this application, by making the height of outlet 101 higher than the height of inlet, the gaseous refrigerant can flow better to outlet 101 and out of outlet 101.

[0063] In some embodiments, the outlet 101 is located at the top of the housing 110 and the inlet is located at the bottom of the housing 110, so that the gaseous refrigerant can flow better to the outlet 101 and out of the outlet 101.

[0064] The flooded evaporator includes heat exchange tubes (not shown in the figure) that pass through the shell 110 along its length. At least a portion of the heat exchange tubes are located inside the shell 110 to heat the refrigerant inside the shell 110, thereby changing the refrigerant inside the shell 110 from a liquid state to a gaseous state.

[0065] In some embodiments, the heat exchange tubes are positioned closer to the inlet so that the heat exchange tubes can heat the refrigerant flowing into the housing 110 from the inlet more quickly and efficiently.

[0066] It should be noted that the refrigerant inside the heat exchange tubes can be water or other fluids. This is a conventional technique in the field of flooded evaporators and will not be elaborated further here.

[0067] In some embodiments, multiple heat exchange tubes are provided, and the multiple heat exchange tubes are arranged in parallel to increase the contact area between the heat exchange tubes and the refrigerant, thereby increasing the heating effect of the heat exchange tubes on the refrigerant.

[0068] like Figures 3-5 As shown, a fixing plate 160 is provided inside the housing 110. The fixing plate 160 has a through part 161 for the heat exchange tube to pass through, so that the heat exchange tube passes through the fixing plate 160 and is set up. The fixing plate 160 is used to support and fix the heat exchange tube, so as to ensure the stability and reliability of the heat exchange tube set inside the housing 110, thereby ensuring the heating effect of the heat exchange tube on the refrigerant.

[0069] like Figure 4 As shown, multiple fixing plates 160 are provided, and the multiple fixing plates 160 are arranged along the length direction of the shell 110 to increase the support and fixing effect on the heat exchange tube.

[0070] In some embodiments, such as Figure 5 As shown, the through part 161 is a through hole provided on the fixing plate 160, and the opening direction of the through hole is set along the length direction of the housing 110.

[0071] like Figure 3 , Figure 4 and Figure 6 As shown, the flooded evaporator includes a baffle plate 130, which is located inside the housing 110 and is situated in the flow path of the gaseous refrigerant to reduce the liquid content of the gaseous refrigerant.

[0072] It should be noted that, since the gaseous refrigerant flows from the inlet to the outlet 101, the baffle plate 130 is located between the inlet and the outlet 101.

[0073] like Figure 6 As shown, the length direction of the baffle plate 130 is set along the length direction of the housing 110, and the height direction of the baffle plate 130 is set along the flow direction of the gaseous refrigerant. When the gaseous refrigerant flows along its flow path, it will flow over the surface of the baffle plate 130.

[0074] Multiple baffles 130 are provided, and the multiple baffles 130 are arranged along the thickness direction of the baffles 130; there is a gap 102 between adjacent baffles 130, and the gap 102 is arranged along the flow direction of the gaseous refrigerant so that the gaseous refrigerant can pass through.

[0075] In some embodiments, the height direction of the baffle plate 130 is arranged along the height direction of the housing 110, and the thickness direction of the baffle plate 130 is arranged along the width direction of the housing 110.

[0076] like Figure 8 As shown, the flooded evaporator includes a bent portion 131, which is disposed on the baffle plate 130 and located on the surface of the baffle plate 130. The bent portion 131 is positioned towards the gap 102 and is used to divide the gaseous refrigerant passing through the gap 102. When the gaseous refrigerant passes through the gap 102, it collides with the baffle plate 130 multiple times, thereby reducing the liquid in the gaseous refrigerant and increasing the liquid-blocking effect of the baffle plate 130.

[0077] The bend 131 creates a non-linear path in the gap 102 between two adjacent baffles 130. When gaseous refrigerant carrying droplets flows through the gap 102, the bend 131 changes the airflow direction, forcing the gaseous refrigerant to flow around the bend 131. Because the density of liquid is much greater than that of gas, the inertial force of the droplets is greater, and they cannot keep up with the gas in changing direction when the airflow changes, thus separating from the gaseous refrigerant.

[0078] Because the bend 131 protrudes from the surface of the baffle 130 and is positioned towards the gap 102, it is equivalent to setting up an "obstacle" in the gas flow channel. When gaseous refrigerant carrying droplets flows through the gap 102, the droplets will directly impact the surface of the bend 131 due to inertia, while the gas will bypass the bend 131 and continue to flow, thus separating the droplets from the gas. After impact, the droplets will adhere to the baffle 130. When small droplets gather into large droplets, the large droplets will drip down along the bend 131 under the action of gravity.

[0079] The bend 131 divides the gap 102 into multiple narrow channels, splitting the airflow into multiple streams. As the channels narrow, the gas velocity increases, leading to a higher frequency of impacts between droplets and the bend 131 and the baffle 130, thus improving separation efficiency. The segmented channels also lengthen the gas flow path, giving droplets more time to settle due to gravity or inertia. Turbulence easily forms in the narrow channels, making droplets more prone to coalescing due to collisions and being captured by the baffle 130. The bend 131 also increases the effective surface area of ​​the baffle 130, providing more droplet attachment points.

[0080] It should be noted that the working principle of the baffle plate 130 with the bent part 131 to increase the liquid blocking effect is not limited to the above-mentioned content, and will not be listed here.

[0081] In some embodiments, such as Figure 3 As shown, the baffle plate 130 is located above the fixed plate 160, and the top of the fixed plate 160 is in contact with the bottom of the baffle plate 130 so that the fixed plate 160 supports the baffle plate 130.

[0082] In some embodiments of this application, the middle portion of the baffle plate 130 is bent towards the adjacent baffle plate 130 to form a bent portion 131. It should be noted that the middle portion of the baffle plate 130 has a recessed portion 132 corresponding to the bent portion 131. This method of forming the bent portion 131 not only makes the shape of the baffle plate 130 more complex in the refrigerant flow path, thereby increasing the liquid-blocking effect on gaseous refrigerant, but also simplifies the manufacturing process of the bent portion 131, ensuring a firm connection between the bent portion 131 and the baffle plate 130.

[0083] In some embodiments, after the baffle plate 130 is provided with the bent portion 131, it is wavy or zigzag in the height direction of the baffle plate 130, so that the shape of the baffle plate 130 in its height direction is irregular, thereby increasing the baffle plate 130's liquid blocking effect on gaseous refrigerant.

[0084] like Figure 9 As shown, the bent portions 131 on different baffles 130 are located on the same side of the corresponding baffles 130 to avoid the bent portions 131 being randomly arranged. Although the randomly arranged bent portions 131 can still have a good liquid-blocking effect on gaseous refrigerant, the flow rate of the gas will decrease after passing through the randomly arranged bent portions 131, which will reduce the heat exchange efficiency of the evaporator.

[0085] The middle portions of multiple baffles 130 are bent in the same direction so that the bent portions 131 are arranged in the same direction on the baffles 130.

[0086] like Figure 7 and Figure 9As shown, the flooded evaporator includes a connecting plate 140. The connecting plate 140 is provided inside the shell 110. The length direction of the connecting plate 140 is arranged along the arrangement direction of the baffle plates 130. The connecting plate 140 is connected to multiple baffle plates 130 so that the connecting plate 140 connects multiple baffle plates 130 into one unit, thereby ensuring the firmness and reliability of the baffle plates 130 in the shell 110.

[0087] In some embodiments, multiple connecting plates 140 are provided, and the multiple connecting plates 140 are arranged along the length direction of the liquid baffle 130 to increase the connection effect of the multiple liquid baffles 130.

[0088] In other embodiments, connecting plates 140 are provided on both sides of the liquid baffle 130 in the height direction to increase the connection effect of multiple liquid baffles 130.

[0089] like Figure 10 As shown, the connecting plate 140 is provided with a snap-in part 141, and one side of the liquid baffle 130 in the height direction is provided in the snap-in part 141 so that the liquid baffle 130 and the connecting plate 140 are connected to each other.

[0090] In some embodiments, the insertion part 141 is a notch provided on the connecting plate 140, and one side of the liquid baffle 130 in the height direction is inserted into the notch so that the liquid baffle 130 and the connecting plate 140 are connected to each other.

[0091] In some embodiments of this application, at least one end of the housing 110 in the length direction is provided with an opening so that the liquid baffle 130 is disposed inside the housing 110 through the opening, thereby facilitating the placement of the liquid baffle 130 inside the housing 110.

[0092] In some embodiments, the housing 110 has openings at both ends, that is, the interior of the housing 110 is a through cavity, which facilitates the placement of the baffle plate 130 inside the housing 110.

[0093] like Figure 11 As shown, the flooded evaporator includes an end plate 120, which is connected to the housing 110 and located at the opening to seal the opening and prevent refrigerant inside the housing 110 from leaking out, thus ensuring the heat exchange effect of the evaporator and the liquid-blocking effect of the baffle plate 130. It should be noted that the heat exchange tubes pass through the end plate 120 and are located inside the housing 110, and the end plate 120 has through holes 122 for the heat exchange tubes to pass through.

[0094] When the housing 110 has openings at both ends, there are two end plates 120, which are respectively located at the openings at both ends of the housing 110.

[0095] In some embodiments, the housing 110 is cylindrical and its length is arranged horizontally.

[0096] The two ends of the baffle plate 130 along its length are connected to the two end plates 120 respectively, so that the baffle plate 130 is firmly installed inside the housing 110.

[0097] like Figure 11 As shown, the end plate 120 is provided with a support portion 121 on the side facing the inside of the housing 110. The support portion 121 is bent on the side of the end plate 120. The end of the baffle plate 130 is located on the support portion 121 so that the support portion 121 supports the baffle plate 130, thereby increasing the firmness of the baffle plate 130 inside the housing 110.

[0098] In some embodiments, the heat exchange tube is located below the support 121 to avoid the support 121 interfering with the heat exchange tube.

[0099] like Figure 3 and Figure 4 As shown, a baffle 150 is provided inside the housing 110. The baffle 150 is located in the flow path of the gaseous refrigerant and is used to block the gaseous refrigerant from liquid flow.

[0100] In this application, the baffle 150 is located behind the liquid baffle 130 in the flow path of the gaseous refrigerant, so as to use the baffle 150 to perform secondary liquid baffle on the gaseous refrigerant, thereby ensuring the liquid baffle effect of the evaporator on the gaseous refrigerant, and thus reducing the liquid content of the gaseous refrigerant flowing out of the evaporator.

[0101] One side of the baffle 150 is set towards the outlet 101, and the other side of the baffle 150 is set towards the liquid baffle 130. There is a certain distance between the baffle 150 and the outlet 101 to avoid the baffle 150 completely blocking the outlet 101, which would prevent the gaseous refrigerant from flowing out of the evaporator in a timely and effective manner.

[0102] The two ends of the baffle 150 are correspondingly arranged with the two ends of the housing 110. The two ends of the baffle 150 and the corresponding ends of the housing 110 are respectively a certain distance apart, so that the gaseous refrigerant can flow into the outlet 101 from the two ends of the baffle 150, making the flow path of the refrigerant more complicated, so as to further reduce the liquid content of the gaseous refrigerant.

[0103] In some embodiments, such as Figure 12 As shown, the baffle 150 is bent away from the liquid baffle 130 on both sides along the length of the housing 110. The two sides of the baffle 150 in the width direction are connected to the housing 110 so that the baffle 150 is set inside the housing 110. The middle part of the baffle 150 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.

[0104] It should be noted that in this embodiment, the width direction of the baffle 150 is in the same direction as the width direction of the housing 110, and the length direction of the baffle 150 is in the same direction as the length direction of the housing 110.

[0105] In some embodiments of this application, the heat exchange tube is located below the baffle plate 130 so that the liquid refrigerant flows to the baffle plate 130 after being heated and evaporated into gaseous refrigerant through the heat exchange tube, thereby allowing the baffle plate 130 to block the gaseous refrigerant.

[0106] In some embodiments of this application, the baffle plate 130 is located below the outlet 101 so that the gaseous refrigerant flowing to the outlet 101 passes through the baffle plate 130 to prevent liquid from flowing out of the outlet 101, thereby ensuring that the liquid content in the gaseous refrigerant is relatively low.

[0107] After the refrigerant is heated into a gaseous state by the heat exchange tube, it can flow out of the shell 110 through the outlet 101 after passing through the liquid baffle 130, thus ensuring the liquid baffle efficiency of the gaseous refrigerant.

[0108] In this embodiment, as Figure 3 As shown, the inlet is located at the bottom of the housing 110, and the outlet 101 is located at the top of the housing 110. The inlet and outlet 101 are arranged along the height direction of the housing 110. The gaseous refrigerant flows roughly along the height direction of the housing 110. The heat exchange tube, the baffle 130 and the baffle 150 are arranged from bottom to top along the height direction of the housing 110.

[0109] The refrigerant flows into the housing 110 through the inlet, is heated and evaporated into gaseous refrigerant through the heat exchange tube, and then flows to the baffle plate 130. After being blocked by the baffle plate 130, it flows to the baffle plate 150. After being blocked by the baffle plate 150 for the second time, it flows out through the outlet 101.

[0110] In the above-mentioned flooded evaporator, baffles 130 and 150 are sequentially arranged in the flow path of the gaseous refrigerant. The baffles 130 performs a primary liquid-blocking function on the gaseous refrigerant, and the baffles 150 perform a secondary liquid-blocking function on the gaseous refrigerant. This increases the liquid-blocking effect of the evaporator, ensuring that the liquid content in the gaseous refrigerant flowing out of the evaporator is low, thereby ensuring the working performance of the evaporator and preventing damage to the compressor from the gaseous refrigerant flowing into it.

[0111] 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.

[0112] 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.

[0113] A chiller unit includes a condenser, in which the refrigerant changes from a gaseous state to a liquid state.

[0114] A chiller unit includes a compressor, and the compressor, condenser and evaporator together form a refrigerant circulation loop, in which the refrigerant circulates.

[0115] 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.

[0116] 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.

[0117] 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 housing, and at least a portion of the heat exchange tube passes through the housing and is disposed inside the housing to heat the refrigerant inside the housing; A liquid baffle is disposed inside the housing and located between the inlet and the outlet. The length of the liquid baffle is arranged along the length of the housing, one end of the liquid baffle in the height direction faces the outlet, and the other end of the liquid baffle in the height direction faces the heat exchange tube. Multiple liquid baffles are provided and arranged along the thickness direction of the liquid baffle. There are gaps between adjacent liquid baffles to allow gaseous refrigerant to pass through. A bending section is provided on the liquid baffle plate and is positioned toward the gap to block gaseous refrigerant passing through the gap.

2. The flooded evaporator according to claim 1, characterized in that, The bent portions on the different baffles are located on the same side of the corresponding baffles; And / or, the middle portion of the baffle plate is bent toward the adjacent baffle plate to form a bend.

3. The flooded evaporator according to claim 1, characterized in that, The housing is provided with a connecting plate, the length direction of which is arranged along the arrangement direction of the liquid baffles, and the connecting plate is connected to multiple liquid baffles.

4. The flooded evaporator according to claim 1, characterized in that, The shell has openings at both ends along its length for the liquid baffle to be installed inside the shell; each opening has an end plate for sealing the opening; the two ends of the liquid baffle along its length are connected to the two end plates respectively.

5. The flooded evaporator according to claim 1, characterized in that, The housing is equipped with a baffle for secondary liquid blocking of gaseous refrigerant; one side of the baffle is positioned towards the outlet, and the other side of the baffle is positioned towards the liquid blocking plate, with a certain distance between the baffle and the outlet.

6. The flooded evaporator according to claim 5, characterized in that, The baffle is arranged along the length of the housing, and the two ends of the baffle are respectively a certain distance from the corresponding ends of the housing; the two sides of the baffle arranged along the length of the housing are bent away from the liquid baffle, and the two sides of the baffle are connected to the housing.

7. The flooded evaporator according to claim 1, characterized in that, The housing is provided with a fixing plate inside, and the fixing plate has a through-hole for the heat exchange tube to pass through.

8. The flooded evaporator according to claim 1, characterized in that, The baffle plate is located below the outlet, and the heat exchange tube is located below the baffle plate.

9. The flooded evaporator according to claim 1, characterized in that, The outlet is at a higher height than the inlet, and the heat exchange tube is positioned closer to the inlet.

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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