Fluid distributor and heat exchanger

Abstract

To provide a fluid distributor and a heat exchanger that are improved in the uniformity and the fault tolerance of refrigerant distribution.SOLUTION: This application provides a fluid distributor and a heat exchanger. The fluid distributor includes: a first plate-shaped member in which an inlet flow passage is formed; a second plate-shaped member in which a first outlet flow passage and a second outlet flow passage spaced apart in a height direction are formed; and a flow guide frame sealingly fixed between the first plate-shaped member and the second plate-shaped member and having a first flow guide space and a second flow guide space partitioned inside. The flow guide frame includes a flow equalizing plate. The flow equalizing plate includes a flow equalizing plate bottom portion, and flow equalizing plate extension portions which extend upward from the flow equalizing plate bottom portion to two sides of the flow equalizing plate bottom portion while being inclined in the height direction. This application improves the uniformity and the fault tolerance of refrigerant distribution.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] Priority claim This application claims the benefit of Chinese Patent Application No. 202410772586.7, filed June 14, 2024, and any and all benefits arising therefrom under 35 U.S.C. Section 119, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE INVENTION This application relates to the field of heat exchange equipment, and in particular to fluid distributors and heat exchangers. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application provides a fluid distributor and heat exchanger to solve or mitigate some of the problems in the related art. [Means for solving the problem]

[0004] The present application provides a fluid distributor, the fluid distributor comprising: a first plate-shaped member having an inlet flow path formed therein; a second plate-like member having a first outlet flow path and a second outlet flow path formed therein and spaced apart in a height direction; a flow guide frame that is fixed and sealed between a first plate-like member and a second plate-like member, has a first flow guide space and a second flow guide space defined therein, and is configured to guide a portion of the fluid that flows in from the inlet flow path through the first flow guide space to flow out from the first outlet flow path, and to guide another portion of the fluid that flows in from the inlet flow path through the second flow guide space to flow out from the second outlet flow path; Including, The flow guide frame is adjacent to the inlet flow channel and includes a flow equalizer plate located below the inlet flow channel in the height direction. The flow equalizer plate includes a flow equalizer plate bottom located below the inlet flow channel and flow equalizer plate extension portions that extend upward while sloping in the height direction from the flow equalizer plate bottom to both sides of the flow equalizer plate bottom, distribute the fluid flowing in from the inlet flow channel to both sides of the flow equalizer plate bottom, and guide the distributed fluid to the first flow guide space and the second flow guide space, respectively.

[0005] In one or more embodiments, the flow equalizer plate is a V-shaped plate or an arc-shaped plate.

[0006] In one or more embodiments, the flow equalizer extensions on either side of the flow equalizer base are equal in length.

[0007] In one or more embodiments, the flow equalizer plate is a V-shaped plate, and the angle of inclination of the flow equalizer plate extensions on both sides of the bottom of the flow equalizer plate relative to the height direction is the same.

[0008] In one or more embodiments, the flow guide frame comprises: a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge, the bottom edge being a flow equalizer plate; a flow guide plate fixed to the flow guide frame; further comprising The flow guide plate is a first slat having two ends spaced a predetermined distance from a first side edge and a second side edge, respectively; a second slat located between the first slat and the top edge, the second slat having a first end secured to the first side edge and a second end spaced a predetermined distance from the second side edge; a third slat having two ends connected to the second end of the second slat and the end of the first slat away from the first side edge, respectively; Including, The inlet flow passage, the first slats, the first outlet flow passage, the second slats, and the second outlet flow passage are arranged in this order from bottom to top in the height direction.

[0009] In one or more embodiments, the flow guide frame comprises: a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge, the bottom edge being a flow equalizer plate; a flow guide plate fixed to the flow guide frame; further comprising The flow guide plate is a first slat having two ends spaced a predetermined distance from a first side edge and a second side edge, respectively; a second slat located between the first slat and the top edge and having two ends spaced a predetermined distance from the first side edge and the second side edge, respectively; a third slat having two ends connected to the second lateral end of the second slat and the second lateral end of the first slat, respectively; a fourth slat having two ends connected to the first lateral end and the top edge of the second slat, respectively; Including, The inlet flow passage, the first slats, the first outlet flow passage, the second slats, and the second outlet flow passage are arranged in this order from bottom to top in the height direction.

[0010] In one or more embodiments, the inlet channel is disposed between the first outlet channel and the second outlet channel, and the first outlet channel is located above the second outlet channel, in a height direction; The guide frame is a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge; a flow guide plate fixed to the flow guide frame; further comprising the flow guide plate includes a fifth slat disposed between the inlet flow path and the first outlet flow path, the fifth slat having an end fixed to the second side edge and the other end spaced a predetermined distance from the first side edge, and having a shape that maintains a constant distance from the flow equalizer plate in a height direction; The end of the flow equalizer plate closer to the second side edge is spaced a predetermined distance from the second side edge, and the end of the flow equalizer plate closer to the first side edge is fixed to the first side edge or extends and is fixed to the top edge, and is spaced a predetermined distance from the other end of the fifth slat.

[0011] In one or more embodiments, the flow guide frame comprises: a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge; a flow guide plate fixed to the flow guide frame; further comprising The flow guide plate is a sixth slat located between the first outlet flow path and the second outlet flow path, the sixth slat having a first end fixed to the first side edge and a second end spaced a predetermined distance from the second side edge; a seventh slat having two ends connected to the second end of the sixth slat and the end of the flow equalizer plate closer to the second side edge, respectively; Including, The inlet flow passage, the flow equalizer plate, the first outlet flow passage, the sixth slat, and the second outlet flow passage are arranged in this order from top to bottom in the height direction.

[0012] Another aspect of the present application provides a heat exchanger, the heat exchanger comprising: a heat exchange tube group having a plurality of refrigerant flow paths spaced apart in a height direction; a plurality of fins arranged corresponding to the heat exchange tube group; a first refrigerant distributor in communication with the outlets of the plurality of refrigerant flow paths; The fluid distributor, wherein a first outlet flow path and a second outlet flow path of the fluid distributor are respectively connected to inlets of two refrigerant flow paths adjacent to each other in a height direction; Includes:

[0013] In one or more embodiments, the heat exchanger comprises: It further includes a distributor body having a body inlet and a plurality of body outlets that individually communicate with the inlet flow passages of the fluid distributor via conduits.

[0014] In one or more embodiments, the fins are arranged along a direction perpendicular to the extension direction of the heat exchange tube group.

[0015] In one or more embodiments, the refrigerant flow paths are sigmoidal or straight flow paths.

[0016] Because the equalizer plate extends obliquely upward, fluid entering the equalizer plate first flows into the bottom of the plate, and when the liquid level is high enough, it spills upward along the equalizer plate. This eliminates uneven fluid distribution caused by the direct influence of gravity on the fluid and improves the uniformity of refrigerant distribution. In addition, fluid flowing out of the inlet channel first flows into and accumulates at the bottom of the equalizer plate, which is located at a low position. Even if the fluid distributor is tilted at a small angle, the fluid accumulated at the bottom of the equalizer plate can be uniformly distributed to both sides, which not only ensures uniform refrigerant distribution but also improves the fault tolerance of the fluid distributor. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram of a structure of a fluid distributor according to a first embodiment of the present application; [Figure 2] 1 is a schematic diagram of an exploded structure of a fluid distributor according to a first embodiment of the present application (flow guide plates in a flow guide frame are not shown). [Figure 3] FIG. 3 is a schematic diagram of the position distribution of flow guide frames relative to an inlet channel, a first outlet channel, and a second outlet channel according to the first embodiment of the present application. [Figure 4] FIG. 10 is a schematic diagram of the position distribution of flow guide frames relative to an inlet channel, a first outlet channel, and a second outlet channel according to a second embodiment of the present application. [Figure 5] FIG. 10 is a schematic diagram of the position distribution of flow guide frames relative to an inlet channel, a first outlet channel, and a second outlet channel according to a third embodiment of the present application. [Figure 6] FIG. 10 is a schematic diagram of the position distribution of flow guide frames relative to an inlet channel, a first outlet channel, and a second outlet channel according to a fourth embodiment of the present application. [Figure 7] 1 is a schematic diagram of the main structure of an inserted fin microchannel heat exchanger according to one or more embodiments of the present application. [Figure 8] 1 is a schematic diagram of a three-dimensional structure of an inserted fin microchannel heat exchanger according to some embodiments of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0018] The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings in several embodiments of the present application, but obviously, the described embodiments are only a part of several embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on several embodiments of the present application without creative work fall within the protection scope of the present application.

[0019] As shown in Figures 1, 2 and 3, the present application provides a fluid distributor implemented by combining a first plate-shaped member 1, a second plate-shaped member 2 and a flow guide frame 3. An inlet flow path 11 is formed in or connected to the first plate-shaped member 1. A first outlet flow path 21 and a second outlet flow path 22 are formed in or connected to the second plate-shaped member 2 and are spaced apart in the height direction (the height direction when the fluid distributor is installed in a heat exchanger, i.e., based on the direction of gravity; in Figure 1, the height direction is indicated by a Z mark). The flow guide frame 3 is fixed in a sealed state between the first plate-shaped member 1 and the second plate-shaped member 2, and the flow guide frame 3 divides the first flow guide space 31 and the second flow guide space 32. A portion of the fluid flowing in from the inlet flow path 11 is guided through the first flow guide space 31 to flow out from the first outlet flow path 21, and another portion of the fluid flowing in from the inlet flow path 11 is guided through the second flow guide space 32 to flow out from the second outlet flow path 22.

[0020] For convenience of illustration, only the outer frame structure of the flow guide frame 3 is shown in FIGS. 1 and 2, and the structures of the flow guide frame 3 in different embodiments are shown with reference to FIGS.

[0021] 3, the flow guide frame 3 is adjacent to the inlet flow passage 11 and includes a flow equalizer plate 33 located below the inlet flow passage 11 in the height direction, and the flow equalizer plate 33 includes a flow equalizer plate bottom portion 331 and a flow equalizer plate extension portion 332. The flow equalizer plate bottom portion 331 is located below the inlet flow passage 11. The flow equalizer plate extension portions 332 extend upward while sloping in the height direction from the flow equalizer plate bottom portion 331 to both sides of the flow equalizer plate bottom portion 331, and distribute the fluid that has flowed in from the inlet flow passage 11 to both sides of the flow equalizer plate bottom portion 331, and guide the distributed fluid to the first flow guide space 31 and the second flow guide space 32, respectively.

[0022] In some embodiments, the equalizer plate extension 332 extends obliquely upward, so that the fluid flowing in from the inlet channel 11 flows from the equalizer plate bottom 331 along the equalizer plate extension 332 to both sides, raising the liquid level. This prevents the fluid flowing into the fluid distributor from the inlet channel 11 from being unevenly distributed due to the direct influence of gravity, thereby improving the uniformity of the fluid (refrigerant) distribution. In addition, the fluid flowing out from the inlet channel 11 first flows into and accumulates at the equalizer plate bottom 331, which is located at a low position. Even if the fluid distributor is tilted at a small angle, the fluid accumulated at the equalizer plate bottom 331 can be uniformly distributed to both sides, which not only ensures the uniformity of the refrigerant distribution but also improves the fault tolerance of the fluid distributor.

[0023] 3 , the flow guide frame 3 includes a first side edge 34 and a second side edge 35 facing each other, a top edge 36 and a bottom edge 37 connecting the first side edge 34 and the second side edge 35, and a flow guide plate 38. In some embodiments, the bottom edge 37 is a flow equalization plate 33. The flow guide plate 38 is fixed to the flow guide frame 3 and includes a first slat 381, a second slat 382, ​​and a third slat 383. The first slat 381 corresponds to the inlet flow passage 11 and is disposed above the inlet flow passage 11 in the height direction, with two ends of the first slat 381 spaced a predetermined distance from the first side edge 34 and the second side edge 35, respectively. The second slat 382 is parallel to the first slat 381 and is located above the first slat 381 in the height direction, with a first end (the left end in the figure) of the second slat 382 fixed to the first side edge 34 and a second end (the right end in the figure) of the second slat 382 spaced a predetermined distance from the second side edge 35. The two ends of the third slat 383 are connected to the second end (the right end in the figure) of the second slat 382 and the end of the first slat 381 away from the first side edge 34 (the right end in the figure), respectively. In this way, the first slat 381, the second slat 382, ​​part of the first side edge 34, and the third slat 383 are enclosed together to form the first flow guide space 31. The second slat 382 , a portion of the first side edge 34 , a portion of the second side edge 35 and the top edge 36 are enclosed together to form the second flow guide space 32 .

[0024] As shown in Figure 3, when viewed from the front, the inlet flow path 11, the first slat 381, the first outlet flow path 21, the second slat 382, ​​and the second outlet flow path 22 are arranged in this order from bottom to top in the height direction (the Z direction shown in the figure).

[0025] In some embodiments, the inlet channel 11 is located at the bottom of the first plate-shaped member 1. The refrigerant flows from the inlet channel 11 into the flow equalizer plate bottom portion 331, along the flow equalizer plate extension portion 332, through the gap between the first slat 381 and the first side edge 34, into the first guide space 31, and then through the gap between the first slat 381 and the second side edge 35 into the second guide space 32. This upward flow into the corresponding guide space eliminates the effect of gravity on the fluid flow rate and helps improve the uniformity of refrigerant distribution. The refrigerant that flows into the first guide space 31 and the second guide space 32 finally flows out of the first outlet channel 21 and the second outlet channel 22, respectively.

[0026] In an optional embodiment, the flow equalizer plate 33 is a V-shaped plate or an arc-shaped plate. The V-shaped plate or arc-shaped plate lifts and equalizes the fluid from the inlet channel 11, preventing the fluid entering the flow guide frame 3 from being unevenly distributed due to gravity and ensuring uniform refrigerant distribution. Furthermore, if the flow equalizer plate 33 is a V-shaped plate and the flow equalizer plate extensions 332 on both sides of the flow equalizer plate bottom 331 have the same inclination angle relative to the height direction, the flow velocity of the fluid flowing on both sides of the flow equalizer plate bottom 331 after entering the flow guide frame 3 can be ensured to be substantially the same, preventing uneven fluid distribution due to differences in inclination angle. Furthermore, the lengths of the flow equalizer plate extensions 332 on both sides of the flow equalizer plate bottom 331 are equal. Similarly, when the flow equalizer plate 33 is an arc-shaped plate (such as a circular arc or an elliptical arc), the flow equalizer plate extensions 332 on both sides of the flow equalizer plate bottom portion 331 have the same curvature and arc length to ensure uniformity of refrigerant fluid distribution.

[0027] In an optional embodiment, the flow guide frame 3 is a pentagonal frame as shown in Figure 3, and the second plate-shaped member 2 and the first plate-shaped member 1 can be formed in the same or different shape as the flow guide frame 3. For example, the first plate-shaped member 1 and the second plate-shaped member 2 are pentagonal frames having the same size as the flow guide frame 3. Alternatively, the first plate-shaped member 1 and the second plate-shaped member 2 are rectangular plates, and the length of the rectangular plate is equal to or greater than the maximum length of the pentagonal frame, and the width of the rectangular plate is equal to or greater than the maximum width of the pentagonal frame. The present application is not limited thereto.

[0028] In some embodiments, the lengths of the first slat 381, the second slat 382, ​​and the third slat 383, the predetermined distance between the first slat 381 and the first side edge 34, the predetermined distance between the first slat 381 and the second side edge 35, the distance between the first slat 381 and the inlet flow path 11, the distance between the first slat 381 and the flow equalizer plate 33, the distance between the first slat 381 and the first outlet flow path 21, the distance between the second slat 382 and the first outlet flow path 21, the distance between the second slat 382 and the second outlet flow path 22, etc. are not particularly limited, and a person skilled in the art can adjust these according to actual needs. Furthermore, a person skilled in the art can adjust the sizes of the first flow guide space 31 and the second flow guide space 32 according to the actual operating conditions (such as the installation angle of the fluid distributor and the heat exchange effect of the heat exchanger to which the fluid distributor is applied in a refrigeration or heating system) so that the refrigerant distribution ratio approaches 1:1, and some embodiments are not limited thereto. In addition, the embodiments of the present application do not limit the shapes of the first slat 381, the second slat 382, ​​and the third slat 383, and the shapes may be straight or curved.

[0029] As shown in FIG. 4, the second embodiment of the present application provides a fluid distributor, which has a similar structure to the fluid distributor of the first embodiment, except that the structure of the flow guide frame 3 is different.

[0030] Specifically, the flow guide frame 3 includes a first side edge 34 and a second side edge 35 facing each other, and a top edge 36 and a bottom edge 37 connecting the first side edge 34 and the second side edge 35, and the bottom edge 37 is a flow equalizer plate 33.

[0031] The flow guide plate 38 is fixed to the flow guide frame 3 and includes a first slat 381, a second slat 3821, a third slat 383, and a fourth slat 384. As shown in Fig. 4, the first slat 381 extends horizontally, with the left and right ends of the first slat 381 spaced a predetermined distance from the first side edge 34 and the second side edge 35. The second slat 3821 is parallel to the first slat 381 and located above the first slat 381 in the height direction, with the left and right ends of the second slat 3821 spaced a predetermined distance from the first side edge 34 and the second side edge 35. The upper and lower ends of the third slat 383 are connected to the end of the second slat 3821 closer to the second side edge 35 (the right end of the second slat 3821 in the figure) and the end of the first slat 381 closer to the second side edge 35 (the right end of the first slat 381 in the figure), respectively. The lower end of the fourth slat 384 is connected to the end of the second slat 3821 closer to the first side edge 34 (i.e., the left end of the second slat 3821), and the upper end of the fourth slat 384 is connected to the top edge 36.

[0032] In this way, the first slat 381, the second slat 3821, part of the first side edge 34, the third slat 383, the fourth slat 384 and part of the top edge 36 are surrounded together to form the first flow guide space 31. The second slat 3821, the fourth slat 384, part of the top edge 36 and the second side edge 35 are surrounded together to form the second flow guide space 32.

[0033] As shown in FIG. 4, when viewed from the front, the inlet flow path 11, the first slat 381, the first outlet flow path 21, the second slat 3821, and the second outlet flow path 22 are arranged in this order from bottom to top in the height direction.

[0034] In some embodiments, the left end of the second slat 3821 is fixedly connected to the top edge 36 via the fourth slat 384, whereas in the first embodiment, the left end of the second slat 382 is directly fixed to the first side edge 34, which allows a person skilled in the art to adjust the fixed position of the left end of the second slat 3821 according to actual needs, thereby increasing the flexibility in configuring the flow guide frame 3.

[0035] In some embodiments, the principles of flow and uniform distribution of the fluid (refrigerant) after entering the inlet channel 11 are the same as those of the first embodiment, and will not be repeated here.

[0036] As shown in FIG. 5, the third embodiment of the present application provides a fluid distributor having a structure similar to that of the fluid distributor of the first embodiment, except that the first outlet flow path 21 is set above the second outlet flow path 22 in the height direction, the inlet flow path 11 is disposed between the first outlet flow path 21 and the second outlet flow path 22, and the flow equalizer plate 33 is disposed between the inlet flow path 11 and the second outlet flow path 22. Accordingly, the structure of the flow guide plate 38 in the flow guide frame 3 is different.

[0037] The flow guide frame 3 has a frame body, a flow equalizing plate 33, and a flow guide plate 38 fixed to the frame body.

[0038] Specifically, the frame body includes a first side edge 34 and a second side edge 35 facing each other, and a top edge 36 and a bottom edge 37 connecting the first side edge 34 and the second side edge 35.

[0039] The flow guide plate 38 includes a fifth slat 385 disposed between the inlet flow passage 11 and the first outlet flow passage 21 in the height direction, with the right end of the fifth slat 385 fixed to the second side edge 35 and the left end of the fifth slat 385 spaced a predetermined distance from the first side edge 34. The fifth slat 385 has a shape that maintains a constant distance from the flow equalizer plate 33 in the height direction, i.e., in some embodiments, has a V-shape similar to the shape of the flow equalizer plate 33. In an optional embodiment, the fifth slat 385 may also have a circular or elliptical arc shape similar to the flow equalizer plate 33.

[0040] One end of the flow equalizer plate 33 closer to the second side edge 35 (the right end in the figure) is set at a predetermined distance from the second side edge 35, and one end of the flow equalizer plate 33 closer to the first side edge 34 (the left end in the figure) is fixed to the first side edge 34 or extends perpendicularly in the height direction and is fixed to the top edge 36, and is spaced a predetermined distance from the left end of the fifth slat 385. Note that FIG. 5 only shows a schematic diagram in which the end of the flow equalizer plate 33 closer to the first side edge 34 extends in the height direction and is fixed to the top edge 36. A schematic diagram (not shown) in which the end of the flow equalizer plate 33 closer to the first side edge 34 is directly fixed to the first side edge 34 is similar to the schematic diagram shown in FIG. 5, and therefore a description thereof will be omitted. In addition, the extension in the height direction may be a vertical extension that coincides with the height direction (perpendicular to the second slat 382) or may be bent at a specific angle relative to the height direction.

[0041] In some embodiments, when the end of the flow equalizer plate 33 near the first side edge 34 is fixed to the top edge 36, after the refrigerant flows from the inlet channel 11 into the flow equalizer plate bottom 331, the refrigerant flows along the flow equalizer plate extension 332 into the gap between the other end of the fifth slat 385 and the end of the flow equalizer plate 33 near the first side edge 34, and into the gap between the end of the flow equalizer plate 33 near the second side edge 35 and the second side edge 35 (i.e., after flowing into the flow equalizer plate bottom 331, the fluid is distributed evenly to both sides), and some of the distributed fluid flows upward into the first flow guide space 31 and flows out through the first outlet channel 41, and another part of the fluid flows downward into the second flow guide space 32 and flows out through the second outlet channel 42. After the fluid enters through the inlet passage 11, a distribution stage overcomes the effects of gravity on the fluid flow rate and uneven fluid distribution, helping to improve the uniformity of refrigerant distribution.

[0042] Similarly, if the end of the flow equalizer plate 33 closest to the first side edge 34 is directly fixed to the first side edge 34, after the refrigerant flows from the inlet channel 11 into the flow equalizer plate bottom part 331, the refrigerant will flow along the flow equalizer plate extension part 332 into the gap between the other end of the fifth slat 385 and the first side edge 34, and into the gap between the end of the flow equalizer plate 33 closest to the second side edge 35 and the second side edge 35 (i.e., after flowing into the flow equalizer plate bottom part 331, the fluid is distributed evenly to both sides). The fluid flow process after distribution is the same as above, and therefore will not be repeated here.

[0043] In addition, when the inlet passage 11 is disposed between the first outlet passage 21 and the second outlet passage 22, adding only the fifth slat 385 is sufficient to achieve uniform fluid distribution, simplifying the structure of the flow guide frame 3 and helping to reduce costs. The fifth slat 385 has a V-shape similar to that of the flow equalizer plate 33, and the refrigerant tends to first descend and then ascend on the flow passage of the fifth slat 385, which helps to balance the flow velocity of the fluid in the first flow guide space 31, so that the flow velocities of the fluid discharged from the first flow guide space 31 and the second flow guide space 32 are substantially the same, ensuring uniform refrigerant distribution.

[0044] In any embodiment, the first plate member 1, the second plate member 2, and the flow guide frame 3 are formed into rectangular frames having the same shape and size. Each rectangular frame has a regular shape, can be obtained by simple processing, and helps to achieve uniform distribution of the refrigerant.

[0045] In some embodiments, the length of the fifth slat 385, the height distance between the fifth slat 385 and the inlet flow passage 11, the height distance between the fifth slat 385 and the flow equalization plate 33, the width of the gap, etc. are not particularly limited, and a person skilled in the art can adjust them according to actual needs.

[0046] As shown in Figure 6, the fourth embodiment of the present application provides a fluid distributor including the first plate-shaped member 1, the second plate-shaped member 2, and the flow guide frame 3 described in the above embodiments, except that the inlet flow path 11 is located close to the top of the first plate-shaped member 1, and therefore the structure of the flow guide frame 3 is also different.

[0047] Specifically, the flow guide frame 3 includes a flow equalizer plate 33, a first side edge 34 and a second side edge 35 facing each other, a top edge 36 and a bottom edge 37 connecting the first side edge 34 and the second side edge 35, and a flow guide plate 38. The two ends of the flow equalizer plate 33 are spaced a predetermined distance from the first side edge 34 and the second side edge 35, respectively. The flow guide plate 38 is fixed to the flow guide frame 3. The flow guide plate 38 includes a sixth slat 386 and a seventh slat 387. The sixth slat 386 is located below the flow equalizer plate 33 in the height direction, and the left end (the left end in the figure) of the sixth slat 386 is fixed to the first side edge 34, and the right end (the right end in the figure) of the sixth slat 386 is spaced a predetermined distance from the second side edge 35. The lower end of the seventh slat 387 is connected to the right end of the sixth slat 386, and the upper end of the seventh slat 387 is connected to the end (the right end in the figure) of the flow equalizer plate 33 closer to the second side edge 35. As shown in Figure 6, when viewed from the front, the inlet flow path 11, the flow equalizer plate 33, the first outlet flow path 21, the sixth slat 386, and the second outlet flow path 22 are arranged in this order from top to bottom in the height direction.

[0048] According to the above, when the inlet flow path 11 is positioned above the first outlet flow path 21 and the second outlet flow path 22, it is sufficient to add only the sixth slat 386 and the seventh slat 387 to achieve uniform distribution of the fluid, thereby simplifying the structure of the flow guide frame 3 and helping to reduce costs.

[0049] In some embodiments, the lengths of the sixth slats 386 and the seventh slats 387, the height-wise distance between the flow equalizer plate 33 and the inlet flow channel 11, the height-wise distance between the flow equalizer plate 33 and the first outlet flow channel 21, the height-wise distance between the sixth slats 386 and the flow equalizer plate 33, and the distance between the seventh slat 387 and the second side edge 35 are not limited, and a person skilled in the art can adjust them according to actual needs. In addition, some embodiments of the present application do not limit the shapes of the sixth slats 386 and the seventh slats 387, and the shapes may be straight or curved.

[0050] As shown in FIGS. 7 and 8 , the present application further provides an inserted-fin microchannel heat exchanger, which includes a heat exchange tube group 4, a plurality of fins 5, a first refrigerant distributor 6, and a fluid distributor 7. The heat exchange tube group 4 has a plurality of refrigerant flow paths 4A spaced apart in the vertical direction (in FIG. 7 , adjacent arrows in 4A indicate the refrigerant flow directions in the corresponding heat exchange tubes). The plurality of fins 5 are inserted and arranged corresponding to the heat exchange tube group 4. The first refrigerant distributor 6 is a manifold and communicates with the refrigerant outlets 41 of the plurality of refrigerant flow paths 4A. Each fluid distributor 7 is a fluid distributor according to any one of the first to fourth embodiments, and the first outlet flow path 21 and the second outlet flow path 22 of the fluid distributor 7 communicate with the refrigerant inlets 42 of two refrigerant flow paths 4A adjacent in the vertical direction, respectively.

[0051] In some embodiments, by using the fluid distributor according to any one of the first to fourth embodiments, the fluid (refrigerant) can be uniformly distributed before flowing into the heat exchange tube group 4, thereby preventing uneven distribution of the fluid in the heat exchange tube group 4 from affecting the performance of the heat exchanger. In addition, even if the heat exchange tube group 4 is misaligned, the heat exchanger including the fluid distributor 7 can maintain excellent heat exchange performance, thereby improving the fault tolerance of the inserted fin microchannel heat exchanger.

[0052] In this embodiment, a fluid distributor 7 is provided at the refrigerant inlet 42 of any two adjacent refrigerant flow paths 4A, but the present application is not limited to this, and a person skilled in the art can adjust the number and distribution of the fluid distributors 7 according to actual needs.

[0053] In optional embodiments, the heat exchange tube group 4 is an S-shaped heat exchange tube or includes multiple heat exchange tubes arranged in parallel. Correspondingly, the refrigerant flow path is an S-shaped flow path or a straight flow path. In optional embodiments, the heat exchange tube is a flat tube or a round tube made of, for example, copper or aluminum. In addition, in some embodiments shown in FIG. 7, the heat exchange tube group 4 includes six refrigerant flow paths 4A, but the present application is not limited thereto, and the number of refrigerant flow paths 4A can be an integer multiple of two.

[0054] In some embodiments, the fins 5 are arranged along a direction perpendicular to the extension direction of the heat exchange tube group 4, in other words, the heat exchanger is an inserted fin type heat exchanger. In some other optional embodiments, the fins 5 may be arranged between adjacent heat exchange tubes, although the embodiments of the present application are not limited thereto.

[0055] In an optional embodiment, the inserted fin microchannel heat exchanger also includes a distributor body 8. The distributor body 8 has a body inlet 81 and multiple body outlets 82. The body inlet 81 may be connected to a pipe outlet of an air conditioning system (not shown), and the body outlets 82 are connected to the inlet flow path 11 of the fluid distributor 7 via a pipe 83. By providing the distributor body 8 with one body inlet 81 and multiple body outlets 82, the refrigerant flows in through the body inlet 81 and flows out uniformly from the multiple body outlets 82, which simplifies the refrigerant distribution structure and helps reduce costs.

[0056] In an optional embodiment, the refrigerant inlets 42 of the multiple refrigerant flow paths 4A are all located on the first side of the heat exchange tube group 4, and the refrigerant outlets 41 of the multiple refrigerant flow paths 4A are all located on the second side of the heat exchange tube group 4. Alternatively, by locating the refrigerant inlets 42 and refrigerant outlets 41 of the multiple refrigerant flow paths 4A all on the same side of the heat exchange tube group, the arrangement of the piping in the first refrigerant distributor 6 and distributor body 8 can be simplified and the cost of the heat exchanger can be reduced.

[0057] In an optional embodiment, the first refrigerant distributor 6 includes multiple refrigerant inlet ports and one refrigerant outlet port, and the multiple refrigerant inlet ports are respectively connected to the refrigerant outlet ports 41 of the multiple refrigerant flow paths, and the refrigerant outlet port may be connected to the piping of the air conditioning system.

[0058] The above embodiments are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall fall within the protection scope of the present application. [Explanation of symbols]

[0059] 1 first plate-shaped member, 11 inlet flow path, 2 second plate-shaped member, 21 first outlet flow path, 22 second outlet flow path, 31 first flow guide space, 32 second flow guide space, 33 flow equalizer plate, 331 flow equalizer plate bottom portion, 332 flow equalizer plate extension portion, 34 first side edge, 35 second side edge, 36 top edge, 37 bottom edge, 38 flow guide plate, 381 first slat, 382 second slat, 3821 second slat, 383 third slat, 384 fourth slat, 385 fifth slat, 386 sixth slat, 387 seventh slat, 4 heat exchange tube group, 4A refrigerant flow path, 41 refrigerant outlet, 42 refrigerant inlet, 5 fin, 6 first refrigerant distributor, 7 fluid distributor, 8 distributor body, 81 Main body inlet, 82 Main body outlet, 83 Pipe line

Claims

1. a first plate-shaped member having an inlet flow path formed therein; a second plate-like member having a first outlet flow path and a second outlet flow path formed therein and spaced apart in a height direction; a flow guide frame that is fixed between the first plate-shaped member and the second plate-shaped member in a sealed manner, has a first flow guide space and a second flow guide space defined therein, and is configured to guide a portion of the fluid that flows in from the inlet flow path through the first flow guide space to flow out from the first outlet flow path, and to guide another portion of the fluid that flows in from the inlet flow path through the second flow guide space to flow out from the second outlet flow path; Equipped with the flow guide frame includes a flow equalizer plate adjacent to the inlet flow path and located below the inlet flow path in the height direction, the equalizing plate includes a flow equalizing plate bottom portion located below the inlet flow passage; and flow equalizing plate extension portions extending upward from the flow equalizing plate bottom portion to both sides of the flow equalizing plate bottom portion while inclining in the height direction, distributing the fluid flowing in from the inlet flow passage to both sides of the flow equalizing plate bottom portion and guiding the distributed fluid to the first flow guide space and the second flow guide space, respectively.

2. The fluid distributor according to claim 1 , wherein the flow equalizer plate is a V-shaped plate or an arc-shaped plate.

3. The fluid distributor of claim 2 , wherein the lengths of the flow equalizer plate extensions on both sides of the flow equalizer plate bottom are equal.

4. 4. The fluid distributor according to claim 3, wherein the flow equalizer plate is a V-shaped plate, and the inclination angles of the flow equalizer plate extensions on both sides of the flow equalizer plate bottom with respect to the height direction are the same.

5. The flow guide frame is a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge, the bottom edge being the flow equalizer plate; a flow guide plate fixed to the flow guide frame; further comprising The flow guide plate is a first slat having two ends spaced a predetermined distance from the first side edge and the second side edge, respectively; a second slat located between the first slat and the top edge, the second slat having a first end secured to the first side edge and a second end spaced a predetermined distance from the second side edge; a third slat having two ends connected to the second end of the second slat and the end of the first slat remote from the first side edge, respectively; Including, The fluid distributor of claim 1 , wherein the inlet flow path, the first slat, the first outlet flow path, the second slat, and the second outlet flow path are arranged in order from bottom to top in the height direction.

6. The flow guide frame is a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge, the bottom edge being the flow equalizer plate; a flow guide plate fixed to the flow guide frame; further comprising The flow guide plate is a first slat having two ends spaced a predetermined distance from the first side edge and the second side edge, respectively; a second slat located between the first slat and the top edge and having two ends spaced a predetermined distance from the first side edge and the second side edge, respectively; a third slat having two ends connected to the second lateral end of the second slat and the second lateral end of the first slat, respectively; a fourth slat having two ends connected to the end near the first side edge and the top edge of the second slat, respectively; Including, The fluid distributor of claim 1 , wherein the inlet flow path, the first slat, the first outlet flow path, the second slat, and the second outlet flow path are arranged in order from bottom to top in the height direction.

7. In the height direction, the inlet flow path is disposed between the first outlet flow path and the second outlet flow path, and the first outlet flow path is located above the second outlet flow path, The flow guide frame is a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge; a flow guide plate fixed to the flow guide frame; further comprising the flow guide plate includes a fifth slat that is disposed between the inlet flow path and the first outlet flow path, has an end fixed to the second side edge and another end spaced a predetermined distance from the first side edge, and has a shape that maintains a constant distance from the flow equalizer plate in the height direction, 2. The fluid distributor of claim 1, wherein an end of the flow equalizer plate near the second side edge is spaced a predetermined distance from the second side edge, and an end of the flow equalizer plate near the first side edge is fixed to the first side edge or extends to the top edge and is spaced a predetermined distance from the other end of the fifth slat.

8. The flow guide frame is a first side edge and a second side edge facing each other; a top edge and a bottom edge connecting the first side edge and the second side edge; a flow guide plate fixed to the flow guide frame; further comprising The flow guide plate is a sixth slat located between the first outlet flow path and the second outlet flow path, the sixth slat having a first end fixed to the first side edge and a second end spaced a predetermined distance from the second side edge; a seventh slat having two ends connected to the second end of the sixth slat and the end of the flow equalizer plate closer to the second side edge, respectively; Including, The fluid distributor according to claim 1 , wherein the inlet flow passage, the flow equalizer plate, the first outlet flow passage, the sixth slat, and the second outlet flow passage are arranged in order from top to bottom in the height direction.

9. a heat exchange tube group having a plurality of refrigerant flow paths spaced apart in a height direction; a plurality of fins arranged corresponding to the group of heat exchange tubes; a first refrigerant distributor communicating with outlets of the plurality of refrigerant flow paths; The fluid distributor according to any one of claims 1 to 8; Equipped with A heat exchanger, wherein the first outlet flow path and the second outlet flow path of the fluid distributor are respectively connected to the inlets of two refrigerant flow paths adjacent to each other in the height direction.

10. The heat exchanger of claim 9 further comprising a distributor body having a body inlet and a plurality of body outlets individually communicating with the inlet flow passages of the fluid distributor via conduits.

11. The heat exchanger according to claim 9 , wherein the fins are arranged in a direction perpendicular to the extending direction of the heat exchange tube group.

12. The heat exchanger according to claim 9 , wherein the refrigerant flow path is an S-shaped flow path or a straight flow path.

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