Fluid distributor and heat exchanger

Abstract

The invention provides a fluid distributor and a heat exchanger, and the fluid distributor comprises a first plate-shaped body which is provided with an inlet flow path; a second plate-shaped body in which first and second outlet flow paths are formed so as to be spaced apart from each other in the height direction; the flow guide frame is fixed between the first plate-shaped body and the second plate-shaped body in a sealed mode, the interior of the flow guide frame is divided into a first flow guide space and a second flow guide space, the flow guide frame comprises a flow equalizing plate which is adjacent to the inlet flow path in the height direction and located below the inlet flow path, and the flow equalizing plate comprises a flow equalizing plate bottom and a flow equalizing plate extending part; the bottom of the flow equalizing plate is located below the inlet flow path correspondingly, and the flow equalizing plate extending parts extend from the bottom of the flow equalizing plate to the positions above the two sides of the bottom of the flow equalizing plate in the mode of inclining to the height direction. And therefore, fluid flowing in from the inlet flow path is shunted to two sides of the bottom of the flow equalizing plate and is respectively guided to the first flow guide space to flow out from the first outlet flow path and the second flow guide space to flow out from the second outlet flow path. According to the invention, the uniformity and fault tolerance of refrigerant distribution are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat exchange equipment, in particular to a fluid distributor and a heat exchanger. BACKGROUND

[0002] Some heat exchangers in the prior art need to use a fluid distributor to ensure the uniformity of the distribution of refrigerant in each passage. Taking an inserted fin type microchannel heat exchanger (inserted fin MCHX) that can be used in a wind-cooled heat pump air conditioning system as an example, the uniform distribution of refrigerant in the inserted fin type microchannel heat exchanger is an important factor affecting the heat exchange performance of the heat exchanger. In actual use, a fluid distributor is needed to distribute refrigerant into each microchannel. When the inflow direction of the refrigerant is not parallel to the direction of gravity, the refrigerant will be affected by gravity and will be insufficient or excessive in a certain branch direction, resulting in uneven distribution of the refrigerant. SUMMARY

[0003] The present application provides a fluid distributor and a heat exchanger to solve or alleviate some of the problems existing in the prior art.

[0004] The present application provides a fluid distributor, comprising:

[0005] a first plate-shaped body formed with an inlet flow path;

[0006] a second plate-shaped body formed with a first outlet flow path and a second outlet flow path arranged apart in a height direction;

[0007] a flow guide frame sealed and fixed between the first plate-shaped body and the second plate-shaped body, the flow guide frame being divided into a first flow guide space and a second flow guide space, a part of fluid flowing in from the inlet flow path being guided to flow out from the first outlet flow path via the first flow guide space, and another part of fluid flowing in from the inlet flow path being guided to flow out from the second outlet flow path via the second flow guide space,

[0008] the flow guide frame comprising a flow equalization plate adjacent to the inlet flow path and located below the inlet flow path in the height direction, the flow equalization plate comprising a flow equalization plate bottom and a flow equalization plate extension, the flow equalization plate bottom being located below the inlet flow path, and the flow equalization plate extension extending from the flow equalization plate bottom to above both sides of the flow equalization plate bottom in a manner inclined to the height direction, so that the fluid flowing in from the inlet flow path is divided into two parts and guided to the first flow guide space and the second flow guide space, respectively.

[0009] In an optional technical solution, the flow equalization plate is a V-shaped plate or an arc-shaped plate.

[0010] In an optional technical solution, the flow equalization plate extensions located on both sides of the flow equalization plate bottom are equal in length.

[0011] In an optional technical solution, the flow-equalizing plate is a V-shaped plate, and the flow-equalizing plate extensions on both sides of the bottom of the flow-equalizing plate have the same inclination angle in the height direction.

[0012] In an optional technical solution, the flow guide frame comprises:

[0013] opposite first and second side edges;

[0014] a top edge and a bottom edge connected between the first and second side edges, and the bottom edge is the flow-equalizing plate;

[0015] a flow guide plate fixed in the flow guide frame, the flow guide plate comprising:

[0016] a first plate strip, both ends of which are spaced apart from the first and second side edges by a specified distance;

[0017] a second plate strip located between the first plate strip and the top edge, and a first end of the second plate strip is fixed to the first side edge, and a second end of the second plate strip is spaced apart from the second side edge by a specified distance;

[0018] a third plate strip, both ends of which are connected to the second end of the second plate strip and the end of the first plate strip away from the first side edge,

[0019] the inlet flow path, the first plate strip, the first outlet flow path, the second plate strip, and the second outlet flow path are sequentially arranged from bottom to top in the height direction.

[0020] In an optional technical solution, the flow guide frame comprises:

[0021] opposite first and second side edges;

[0022] a top edge and a bottom edge connected between the first and second side edges, and the bottom edge is the flow-equalizing plate;

[0023] a flow guide plate fixed in the flow guide frame, the flow guide plate comprising:

[0024] a first plate strip, both ends of which are spaced apart from the first and second side edges by a specified distance;

[0025] a second plate strip located between the first plate strip and the top edge, and both ends of the second plate strip are spaced apart from the first and second side edges by a specified distance;

[0026] a third plate strip, both ends of which are connected to the end of the second plate strip close to the second side edge and the end of the first plate strip close to the second side edge;

[0027] a fourth plate strip, both ends of which are connected to the end of the second plate strip close to the first side edge and the top edge;

[0028] The inlet flow path, the first batten, the first outlet flow path, the second batten and the second outlet flow path are sequentially arranged from bottom to top in the height direction.

[0029] In an optional technical solution, in the height direction, the inlet flow path is arranged between the first outlet flow path and the second outlet flow path, and the first outlet flow path is above the second outlet flow path.

[0030] The flow guide frame has:

[0031] Opposite first and second side edges;

[0032] A top edge and a bottom edge connected between the first and second side edges;

[0033] The flow guide plate is fixed in the flow guide frame, and the flow guide plate comprises:

[0034] The fifth batten is arranged between the inlet flow path and the first outlet flow path, one end of the fifth batten is fixed to the second side edge, the other end of the fifth batten is spaced apart from the first side edge by a predetermined distance, and the fifth batten is shaped to maintain a fixed distance with the flow uniforming plate in the height direction.

[0035] The end of the flow uniforming plate close to the second side edge is arranged to be spaced apart from the second side edge by a predetermined distance, and the end of the flow uniforming plate close to the first side edge is fixed to the first side edge or extended to the top edge and spaced apart from the other end of the fifth batten by a predetermined distance.

[0036] In an optional technical solution, the flow guide frame comprises:

[0037] Opposite first and second side edges;

[0038] A top edge and a bottom edge connected between the first and second side edges;

[0039] The flow guide plate is fixed in the flow guide frame, and the flow guide plate comprises:

[0040] The sixth batten is arranged between the first outlet flow path and the second outlet flow path, and the first end of the sixth batten is fixed to the first side edge, and the second end of the sixth batten is spaced apart from the second side edge by a predetermined distance.

[0041] The seventh batten is connected to the second end of the sixth batten and the end of the flow uniforming plate close to the second side edge, respectively.

[0042] The inlet flow path, the flow uniforming plate, the first outlet flow path, the sixth batten and the second outlet flow path are sequentially arranged from top to bottom in the height direction.

[0043] Another aspect of the present application provides a heat exchanger, comprising:

[0044] The heat exchanger tube group has a plurality of refrigerant flow paths arranged at a predetermined distance in the height direction.

[0045] a plurality of fins are arranged corresponding to the heat exchange tube groups;

[0046] a first refrigerant distributor is in communication with the outlets of the plurality of refrigerant flow paths;

[0047] The fluid distributor, the first outlet flow path and the second outlet flow path of the fluid distributor are respectively in communication with the inlets of two refrigerant flow paths adjacent in the height direction.

[0048] In an optional technical solution, the fluid distributor further comprises:

[0049] The distributor body has a body inlet and a plurality of body outlets, and the plurality of body outlets are respectively in communication with the inlet flow paths of the fluid distributor through pipelines.

[0050] In an optional technical solution, the fins are arranged perpendicular to the extension direction of the heat exchange tube groups.

[0051] In an optional technical solution, the refrigerant flow path is an S-shaped flow path or a straight line type flow path.

[0052] <Advantages>

[0053] Since the flow uniforming plate extension part is in the form of upwardly inclined extension, the liquid flowing into the flow uniforming plate first enters the bottom of the flow uniforming plate, and after accumulating enough liquid level, flows out upwardly along the flow uniforming plate extension part, which can overcome the uneven distribution caused by the direct influence of gravity on the fluid, and improve the uniformity of refrigerant distribution. In addition, the fluid flowing out of the inlet flow path first enters and accumulates at the bottom of the flow uniforming plate at the low place, and even if the fluid distributor is inclined at a small angle, the fluid accumulated at the bottom of the flow uniforming plate can still be evenly distributed to both sides, which not only ensures the uniformity of refrigerant distribution, but also improves the fault tolerance of the fluid distributor. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 is a structural schematic diagram of the fluid distributor in the first embodiment of the present application.

[0055] Figure 2 is an exploded structural schematic diagram of the fluid distributor in the first embodiment of the present application. (The flow guide plates in the flow guide frame are not shown)

[0056] Figure 3 is a relative position distribution schematic diagram of the flow guide frame, the inlet flow path, the first outlet flow path and the second outlet flow path in the first embodiment of the present application.

[0057] Figure 4 is a relative position distribution schematic diagram of the flow guide frame, the inlet flow path, the first outlet flow path and the second outlet flow path in the second embodiment of the present application.

[0058] Figure 5This is a schematic diagram showing the relative positional distribution of the guide frame, the inlet flow path, the first outlet flow path, and the second outlet flow path in the third embodiment of this application.

[0059] Figure 6 This is a schematic diagram showing the relative positional distribution of the guide frame, the inlet flow path, the first outlet flow path, and the second outlet flow path in the fourth embodiment of this application.

[0060] Figure 7 This is a schematic diagram of the front view of the insert-type microchannel heat exchanger in the embodiments of this application.

[0061] Figure 8 This is a three-dimensional structural diagram of the insert-type microchannel heat exchanger in the embodiments of this application.

[0062] Figure label:

[0063] First plate 1; Inlet flow path 11; Second plate 2; First outlet flow path 21; Second outlet flow path 22; Guide frame 3; First guide space 31; Second guide space 32; Flow equalization plate 33; Bottom of flow equalization plate 331; Extension of flow equalization plate 332; First side 34; Second side 35; Top edge 36; Bottom edge 37; Guide plate 38; First strip 381; Second strip 382; Second strip 3821; Third strip 383; Fourth strip 284; Fifth strip 385; Sixth strip 386; Seventh strip 387; Heat exchange tube assembly 4; Refrigerant flow path 4A; Refrigerant outlet 41; Refrigerant inlet 42; Fin 5; First refrigerant distributor 6; Fluid distributor 7; Distributor body 8; Body inlet 81; Body outlet 82; Pipeline 83. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0065] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides a fluid distributor, which is formed by combining a first plate-shaped body 1, a second plate-shaped body 2, and a flow guide frame 3. The first plate-shaped body 1 forms or is connected to an inlet flow path 11. The second plate-shaped body 2 forms or is connected to a flow guide frame 3 in the height direction (based on the height direction of the fluid distributor when installed in the heat exchanger, i.e., the direction of gravity). Figure 1The first outlet flow path 21 and the second outlet flow path 22 are separated by Z in the height direction. The guide frame 3 is sealed and fixed between the first plate 1 and the second plate 2. The guide frame 3 is divided into a first guide space 31 and a second guide space 32. A part of the fluid flowing in from the inlet flow path 11 is guided through the first guide space 31 to flow out from the first outlet flow path 21, and another part of the fluid flowing in from the inlet flow path 11 is guided through the second guide space 32 to flow out from the second outlet flow path 22.

[0066] For ease of illustration, Figure 1 , Figure 2 The diagram only illustrates the outer frame structure of the guide frame 3. For the actual structure of the guide frame 3 in different embodiments, please refer to [the provided text]. Figures 3-6 .

[0067] refer to Figure 3 The flow guide frame 3 includes a flow equalization plate 33 that is adjacent to and below the inlet flow path 11 in the height direction. The flow equalization plate 33 includes a flow equalization plate bottom 331 and a flow equalization plate extension 332. The flow equalization plate bottom 331 is located below the inlet flow path 11. The flow equalization plate extension 332 extends from the flow equalization plate bottom 331 upwards on both sides of the flow equalization plate bottom 331 in an inclined manner in the height direction, so that the fluid flowing in from the inlet flow path 11 is diverted to both sides of the flow equalization plate bottom 331 and guided to the first flow guide space 31 and the second flow guide space 32 respectively.

[0068] In this embodiment, since the flow equalization plate extension 332 extends upwards at an angle, the liquid flowing in from the inlet flow path 11 flows from the bottom 331 of the flow equalization plate in a manner that the liquid level rises to both sides along the flow equalization plate extension 332. This overcomes the uneven distribution of the fluid flowing into the liquid distributor from the inlet flow path 11 due to the direct influence of gravity, thus improving the uniformity of liquid (refrigerant) distribution. Furthermore, the fluid flowing out of the inlet flow path 11 first enters and accumulates at the bottom 331 of the flow equalization plate, which is located at a lower position. Even if the fluid distributor tilts at a small angle, the fluid accumulated at the bottom 331 of the flow equalization plate can still be evenly distributed to both sides, which not only ensures the uniformity of refrigerant distribution but also improves the fault tolerance of the fluid distributor.

[0069] Specifically, such as Figure 3As shown, the flow guide frame 3 includes: a first side 34 and a second side 35 opposite to each other, a top edge 36 and a bottom edge 37 connected between the first side 34 and the second side 35, and a flow guide plate 38. In this embodiment, the bottom edge 37 is the flow equalization plate 33. The flow guide plate 38 is fixed inside the flow guide frame 3. The flow guide plate 38 includes a first strip 381, a second strip 382, ​​and a third strip 383. The first strip 381 corresponds to the inlet flow path 11 and is positioned above the inlet flow path 11 in the height direction. Its two ends are separated from the first side 34 and the second side 35 by a predetermined distance, respectively. The second strip 382 is parallel to the first strip 381 and is positioned above the first strip 381 in the height direction. The first end (left end in the figure) of the second strip 382 is fixed to the first side 34, and the second end (right end in the figure) of the second strip 382 is separated from the second side 35 by a predetermined distance. The two ends of the third strip 383 are respectively connected to the second end (right end in the figure) of the second strip 382 and the end of the first strip 381 away from the first side 34 (right end in the figure). Thus, the first strip 381, the second strip 382, ​​a portion of the first side 34, and the third strip 383 together enclose and form the first flow guide space 31. The second slat 382, ​​together with a portion of the first side 34, a portion of the second side 35, and the top edge 36, forms the second flow guiding space 32.

[0070] like Figure 3 As shown, 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 sequentially from bottom to top in the height direction (Z direction shown in the figure).

[0071] In this embodiment, the inlet flow path 11 is located at the bottom of the first plate-shaped body 1. After the refrigerant enters the bottom 331 of the flow equalization plate from the inlet flow path 11, it flows into the first flow guiding space 31 through the gap between the first strip 381 and the first side 34 along the extension 332 of the flow equalization plate, and flows into the second flow guiding space 32 through the gap between the first strip 381 and the second side 35. That is, it flows upward into the corresponding flow guiding space, which overcomes the influence of gravity on the fluid flow rate and is conducive to improving the uniformity of refrigerant distribution. The refrigerant that enters the first flow guiding space 31 and the second flow guiding space 32 finally flows out from the first outlet flow path 21 and the second outlet flow path 22, respectively.

[0072] In some optional embodiments, the flow equalization plate 33 is a V-shaped plate or an arc-shaped plate. The V-shaped or arc-shaped plate can lift and homogenize the fluid from the inlet flow path 11, preventing uneven flow due to gravity within the guide frame 3 and ensuring uniform refrigerant distribution. Furthermore, when the flow equalization plate 33 is a V-shaped plate, the extensions 332 on both sides of the bottom 331 of the flow equalization plate have the same inclination angle in the height direction, ensuring that the flow rates of the fluids flowing to both sides of the bottom 331 of the flow equalization plate are essentially the same after entering the guide frame 3, avoiding uneven fluid distribution due to different inclination angles. Even further, the extensions 332 on both sides of the bottom 331 of the flow equalization plate have equal lengths. Similarly, when the flow equalization plate 33 is an arc-shaped plate (e.g., a circular arc or an elliptical arc), the extensions 332 on both sides of the bottom 331 of the flow equalization plate have the same curvature and length to ensure uniform refrigerant fluid distribution.

[0073] In an optional embodiment, the flow guide box 3 is as follows: Figure 3 The pentagonal frame shown, the second plate 2 and the first plate 1 can be formed into the same or different shapes as the guide frame 3. For example, the first plate 1 and the second plate 2 can be pentagonal frames of the same size as the guide frame 3. Alternatively, the first plate 1 and the second plate 2 can be rectangular plates, and the length of the rectangular plates is not less than the maximum length of the pentagonal frame, and the width of the rectangular plates is not less than the maximum width of the pentagonal frame. This is not a limitation.

[0074] In this embodiment, the lengths of the first strip 381, the second strip 382, ​​and the third strip 383, the specified distance between the first strip 381 and the first side 34 and the second side 35, the spacing between the first strip 381 and the inlet flow path 11, the flow equalization plate 33, and the first outlet flow path 21, and the spacing between the second strip 382 and the first outlet flow path 21 and the second outlet flow path 22 are not specifically limited, and technicians can adjust them according to actual needs. Furthermore, technicians can adjust the size of the first guide space 31 and the second guide space 32 according to actual operating conditions (such as the installation angle of the fluid distributor or the heat exchange effect of the heat exchanger used in the refrigeration or heating system) to make the refrigerant distribution ratio approach 1:1; this embodiment does not limit this. Furthermore, the shape of the first strip 381, the second strip 382, ​​and the third strip 383 is not limited in this embodiment; they can be straight or curved.

[0075] <Second Embodiment>

[0076] like Figure 4 As shown, the second embodiment of this application provides a fluid distributor, which has a similar structure to the fluid distributor in the first embodiment, except that the structure of the guide frame 3 is different.

[0077] Specifically, the flow guide frame 3 includes: a first side 34 and a second side 35 opposite to each other, a top edge 36 and a bottom edge 37 connecting the first side 34 and the second side 35, and the bottom edge 37 is the flow equalization plate 33.

[0078] The guide vane 38 is fixed inside the guide frame 3. The guide vane 38 includes a first strip 381, a second strip 3821, a third strip 383, and a fourth strip 384. The first strip 381 extends along... Figure 4 The first strip 3821 extends horizontally as shown, with its left and right ends separated from the first side 34 and the second side 35 by a predetermined distance, respectively. The second strip 3821 is parallel to the first strip 381 and is located above the first strip 381 in the height direction. The left and right ends of the second strip 3821 are separated from the first side 34 and the second side 35 by a predetermined distance, respectively. The upper and lower ends of the third strip 383 are connected to the end of the second strip 3821 near the second side 35 (the right end of the second strip 3821 in the figure) and the end of the first strip 381 near the second side 35 (the right end of the first strip 381 in the figure), respectively. The lower end of the fourth strip 384 is connected to the end of the second strip 3821 near the first side 34 (i.e., the left end of the second strip 3821), and the upper end is connected to the top edge 36.

[0079] Thus, the first slat 381, the second slat 3821, a portion of the first side 34, the third slat 383, the fourth slat 384, and a portion of the top edge 36 together enclose and form the first flow guiding space 31. The second slat 3821, the fourth slat 384, a portion of the top edge 36, and the second side 35 together enclose and form the second flow guiding space 32.

[0080] like Figure 4 As shown, 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 sequentially from bottom to top in the height direction.

[0081] In this embodiment, the left end of the second strip 3821 is fixedly connected to the top edge 36 via the fourth strip 384. Unlike the first embodiment where the left end of the second strip 382 is directly fixed to the first side edge 34, technicians can adjust the fixed position of the left end of the second strip 3821 according to actual needs, which improves the flexibility of the guide frame 3 structure.

[0082] The principle of the flow and even distribution of the liquid (refrigerant) after entering from the inlet flow path 11 in this embodiment is the same as that in the first embodiment, and will not be repeated here.

[0083] <Third Embodiment>

[0084] like Figure 5As shown, the third embodiment of this application provides a fluid distributor, which is similar in structure to 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 correspondingly arranged between the first outlet flow path 21 and the second outlet flow path 22, the flow equalization plate 33 is correspondingly arranged between the inlet flow path 11 and the second outlet flow path 22, and correspondingly, the structure of the flow guide plate 38 in the flow guide frame 3 is different.

[0085] The flow guide frame 3 has: a frame, a flow equalization plate 33, and a flow guide plate 38 fixed in the frame.

[0086] Specifically, the frame includes a first side 34 and a second side 35 opposite to each other, a top edge 36 and a bottom edge 37 connecting the first side 34 and the second side 35.

[0087] The flow guide plate 38 includes a fifth strip 385, which is disposed between the inlet flow path 11 and the first outlet flow path 21 in the height direction. The right end of the fifth strip 385 is fixed to the second side 35, and the left end of the fifth strip 385 is separated from the first side 34 by a predetermined distance. The fifth strip 385 is in the shape of maintaining a fixed distance from the flow equalization plate 33 in the height direction, that is, a V-shape similar to the flow equalization plate 33 in this embodiment. In an optional embodiment, the fifth strip 385 may also be in the shape of a circular arc or an elliptical arc similar to the flow equalization plate 33.

[0088] The end of the flow equalization plate 33 near the second side 35 (right end in the figure) is set at a predetermined distance from the second side 35. The end of the flow equalization plate 33 near the first side 34 (left end in the figure) is fixed to the first side 34, or extends vertically in the height direction and is fixed to the top edge 36 and is separated from the left end of the fifth strip 385 by a predetermined distance. Figure 5 The diagram only shows a schematic of the flow equalization plate 33 extending in the height direction from one end near the first side 34 and then fixed to the top edge 36. A similar schematic of the flow equalization plate 33 directly fixed to the first side 34 is not shown in the diagram and will not be described further. Furthermore, the extension in the height direction can be either a vertical extension consistent with the height direction (perpendicular to the second rib 382) or a bent extension at a certain angle to the height direction.

[0089] In this embodiment, when the end of the flow equalization plate 33 near the first side 34 is fixed to the top edge 36, after the refrigerant enters the bottom 331 of the flow equalization plate from the inlet flow path 11, it flows along the extension 332 of the flow equalization plate to the gap between the other end of the fifth strip 385 and the end of the flow equalization plate 33 near the first side 34, and the gap between the end of the flow equalization plate 33 near the second side 35 and the second side 35 (i.e., the fluid is evenly divided to both sides after entering the bottom 331 of the flow equalization plate). After the fluid is divided, a portion of the fluid flows upward into the first guide space 31 and flows out from the first outlet flow path 31, while the other portion of the fluid flows downward into the second guide space 32 and flows out from the second outlet flow path 32. After the fluid flows in through the inlet flow path 11, the diversion stage overcomes the influence of gravity on the uneven distribution of fluid velocity and flow rate, which is beneficial to improving the uniformity of refrigerant distribution.

[0090] Similarly, when the end of the flow equalization plate 33 near the first side 34 is directly fixed to the first side 34, after the refrigerant enters the bottom 331 of the flow equalization plate from the inlet flow path 11, it flows along the extension 332 of the flow equalization plate to the gap between the other end of the fifth strip 385 and the first side 34, and the gap between the end of the flow equalization plate 33 near the second side 35 and the second side 35 (that is, the fluid is evenly divided to both sides after entering the bottom 331 of the flow equalization plate). The fluid flow process after the division is the same as above, and will not be described again here.

[0091] Furthermore, when the inlet flow path 11 is located between the first outlet flow path 21 and the second outlet flow path 22, only the fifth slat 385 needs to be added to achieve uniform fluid distribution, simplifying the structure of the guide frame 3 and saving costs. The fifth slat 385 is V-shaped, similar to the flow equalization plate 33, and the refrigerant exhibits a trend of first decreasing and then increasing in the flow path of the fifth slat 385. This helps to balance the flow velocity of the fluid in the first guide space 31, ensuring that the flow velocities of the fluid discharged from the first guide space 31 and the second guide space 32 are basically the same, thus guaranteeing the uniformity of refrigerant distribution.

[0092] In an optional embodiment, the first plate 1, the second plate 2, and the guide frame 3 are formed into a rectangular frame with the same shape and size. The rectangular frame has a regular shape, simple processing technology, and is conducive to achieving uniform distribution of refrigerant.

[0093] In this embodiment, the length of the fifth strip 385, the height distance between the fifth strip 385 and the inlet flow path 11 and the flow equalization plate 33, and the width of the aforementioned gap are not specifically limited, and technicians can adjust them according to actual needs.

[0094] <Fourth Embodiment>

[0095] like Figure 6As shown, the fourth embodiment of this application provides a fluid distributor, including the first plate 1, the second plate 2 and the guide frame 3 mentioned in the above embodiments. The difference is that the inlet flow path 11 is close to the top of the first plate 1, and correspondingly, the structure of the guide frame 3 is different.

[0096] Specifically, the flow guide frame 3 includes a flow equalization plate 33, opposing first side 34 and second side 35, a top edge 36 and a bottom edge 37 connecting the first side 34 and the second side 35, and a flow guide plate 38. The two ends of the flow equalization plate 33 are respectively spaced at a predetermined distance from the first side 34 and the second side 35. The flow guide plate 38 is fixed inside the flow guide frame 3 and includes a sixth strip 386 and a seventh strip 387. The sixth strip 386 is located below the flow equalization plate 33 in the height direction, and its left end (left end in the figure) is fixed to the first side 34, while its right end (right end in the figure) is spaced at a predetermined distance from the second side 35. The lower end of the seventh strip 387 is connected to the right end of the sixth strip 386, and its upper end is connected to the end of the flow equalization plate 33 near the second side 35 (right end in the figure). Figure 6 As shown, from a frontal view, the inlet flow path 11, the flow equalization plate 33, the first outlet flow path 21, the sixth plate 386, and the second outlet flow path 22 are arranged sequentially from top to bottom in the height direction.

[0097] In the above manner, when the inlet flow path 11 is located above the first outlet flow path 21 and the second outlet flow path 22, only the sixth strip 386 and the seventh strip 387 need to be added to achieve uniform flow distribution of the fluid, which simplifies the structure of the guide frame 3 and helps to save costs.

[0098] In this embodiment, the lengths of the sixth strip 386 and the seventh strip 387, the vertical spacing between the flow equalization plate 33 and the inlet flow path 11 and the first outlet flow path 21, the vertical spacing between the sixth strip 386 and the flow equalization plate 33, and the spacing between the seventh strip 387 and the second side 35 are not limited, and those skilled in the art can adjust them according to actual needs. Furthermore, the shape of the sixth strip 386 and the seventh strip 387 is not limited in this embodiment; they can be straight or curved.

[0099] like Figure 7 , Figure 8 As shown, this application also provides a finned microchannel heat exchanger including a heat exchange tube assembly 4, multiple fins 5, a first refrigerant distributor 6, and a fluid distributor 7. The heat exchange tube assembly 4 has multiple refrigerant flow paths 4A arranged vertically spaced apart. Figure 7(The arrows adjacent to 4A indicate the direction of refrigerant flow in the corresponding heat exchange tubes); multiple fins 5 are correspondingly embedded in the heat exchange tube group 4; the first refrigerant distributor 6, i.e., the manifold, is connected to the refrigerant outlet 41 of multiple refrigerant flow paths 4A; the fluid distributor 7 is the fluid distributor described in any 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 are respectively connected to the refrigerant inlet 42 of two adjacent refrigerant flow paths 4A in the height direction.

[0100] In this embodiment, by employing a fluid distributor as described in any of the first to fourth embodiments, the fluid (refrigerant) can be uniformly distributed before entering the heat exchanger group 4, overcoming the influence of uneven fluid distribution in the heat exchanger group 4 on the heat exchanger performance. In addition, when the heat exchanger group 4 experiences installation deviation, the heat exchanger with the aforementioned fluid distributor 7 can still maintain relatively good heat exchange performance, improving the fault tolerance of the finned microchannel heat exchanger.

[0101] It should be noted that although this embodiment shows the case where fluid distributors 7 are provided for both refrigerant inlets 42 of any two adjacent refrigerant flow paths 4A, it is not limited to this. Technicians can adjust the number and distribution of fluid distributors 7 according to actual needs.

[0102] In an optional embodiment, the heat exchanger tube group 4 is an S-shaped heat exchanger tube or includes multiple parallel heat exchanger tubes. Correspondingly, the refrigerant flow path is an S-shaped flow path or a straight flow path. In an optional embodiment, the heat exchanger tubes are, for example, flat or round tubes formed of copper or aluminum. Additionally, in Figure 7 The illustrated embodiment shows a case where the heat exchanger tube assembly 4 includes 6 refrigerant flow paths 4A, but it is not limited to this, and the number of refrigerant flow paths 4A can be an integer multiple of 2.

[0103] In this embodiment, the fins 5 are arranged perpendicular to the extension direction of the heat exchange tube assembly 4, i.e., the heat exchanger is a finned heat exchanger. In some other alternative embodiments, the fins 5 may also be arranged between adjacent heat exchange tubes. The embodiments of this application do not limit this.

[0104] In an optional embodiment, the finned microchannel heat exchanger further includes a distributor body 8, which has a main inlet 81 and multiple main outlets 82. The main inlet 81 can be connected to the pipe outlet of an air conditioning system (not shown), and the main outlets 82 are respectively connected to the inlet flow path 11 of the fluid distributor 7 through pipes 83. By setting one main inlet 81 and multiple main outlets 82 in one distributor body 8, the refrigerant enters from one main inlet 81 and flows out evenly from multiple main outlets 82, simplifying the refrigerant distribution structure and helping to save costs.

[0105] In an optional embodiment, all refrigerant inlets 42 of the multiple refrigerant flow paths 4A are located on the first side of the heat exchange tube assembly 4, and all refrigerant outlets 41 of the multiple refrigerant flow paths 4A are located on the second side of the heat exchange tube assembly 4. Alternatively, all refrigerant inlets 42 and refrigerant outlets 41 of the multiple refrigerant flow paths 4A are located on the same side of the heat exchange tube assembly. This simplifies the arrangement of pipes on the first refrigerant distributor 6 and the distributor body 8, saving heat exchanger costs.

[0106] In an optional embodiment, the first refrigerant distributor 6 includes multiple refrigerant inflow sections and one refrigerant outflow section. The multiple refrigerant inflow sections are respectively connected to the refrigerant outlets 41 of multiple refrigerant flow paths, and the refrigerant outflow section can be connected to the piping of the air conditioning system.

[0107] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fluid distributor, comprising: The first plate-like body forms an inlet flow path; The second plate-shaped body has a first outlet flow path and a second outlet flow path that are separated in the height direction; A flow guide frame, sealed and fixed between the first plate-shaped body and the second plate-shaped body, is provided with a first flow guide space and a second flow guide space. A portion of the fluid flowing in from the inlet flow path is guided through the first flow guide space to flow out from the first outlet flow path, and another portion of the fluid flowing in from the inlet flow path is guided through the second flow guide space to flow out from the second outlet flow path. The characteristic of this design is that... The flow guide frame includes a flow equalization plate adjacent to and below the inlet flow path in the height direction. The flow equalization plate includes a flow equalization plate bottom and a flow equalization plate extension. The flow equalization plate bottom is located below the inlet flow path. The flow equalization plate extension extends from the flow equalization plate bottom to the upper sides of the flow equalization plate bottom in an inclined manner in the height direction, thereby causing the fluid flowing in from the inlet flow path to be diverted to the two sides of the flow equalization plate bottom and guided to the first flow guide space and the second flow guide space respectively.

2. The fluid distributor according to claim 1, characterized in that, The flow equalization plate is a V-shaped plate or an arc plate.

3. The fluid distributor according to claim 2, characterized in that, The extensions of the flow equalizing plate located on both sides of the bottom of the flow equalizing plate are of equal length.

4. The fluid distributor according to claim 3, characterized in that, The flow equalization plate is a V-shaped plate, and the extensions of the flow equalization plate located on both sides of the bottom of the flow equalization plate have the same tilt angle as the height direction.

5. The fluid distributor according to any one of claims 1-4, characterized in that, The flow guide frame includes: The first and second sides are opposite to each other; The top edge and bottom edge are connected between the first side and the second side, and the bottom edge is the flow equalization plate; A flow deflector, fixed within the flow deflector frame, comprises: The first strip is separated from the first side and the second side by a specified distance at both ends; The second strip is located between the first strip and the top edge, and the first end of the second strip is fixed to the first side edge, and the second end of the second strip is separated from the second side edge by a specified distance; The third strip has its two ends connected to the second end of the second strip and the end of the first strip furthest from the first side, respectively. The inlet flow path, the first slat, the first outlet flow path, the second slat, and the second outlet flow path are arranged sequentially from bottom to top in the height direction.

6. The fluid distributor according to any one of claims 1-4, characterized in that, The flow guide frame includes: The first and second sides are opposite to each other; The top edge and bottom edge are connected between the first side and the second side, and the bottom edge is the flow equalization plate; A flow deflector, fixed within the flow deflector frame, comprises: The first strip is separated from the first side and the second side by a specified distance at both ends; The second strip is located between the first strip and the top edge, and the two ends of the second strip are respectively separated from the first side edge and the second side edge by a specified distance; The third strip is connected at both ends to the end of the second strip near the second side and the end of the first strip near the second side, respectively. The fourth strip is connected at both ends to the end of the second strip closest to the first side and the top edge, respectively. The inlet flow path, the first slat, the first outlet flow path, the second slat, and the second outlet flow path are arranged sequentially from bottom to top in the height direction.

7. The fluid distributor according to any one of claims 1-4, characterized in that, In the height direction, the inlet flow path is correspondingly located 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 has: The first and second sides are opposite to each other; The top edge and bottom edge connecting the first side and the second side; A flow deflector, fixed within the flow deflector frame, comprises: The fifth strip is disposed between the inlet flow path and the first outlet flow path. One end of the fifth strip is fixed to the second side, and the other end of the fifth strip is separated from the first side by a specified distance. The fifth strip is shaped to maintain a fixed distance from the flow equalization plate in the height direction. The end of the flow equalization plate near the second side is separated from the second side by a predetermined distance. The end of the flow equalization plate near the first side is fixed to the first side or extends and is fixed to the top edge and separated from the other end of the fifth strip by a predetermined distance.

8. The fluid distributor according to any one of claims 1-4, characterized in that, The flow guide frame includes: The first and second sides are opposite to each other; The top edge and bottom edge connecting the first side and the second side; A flow deflector, fixed within the flow deflector frame, comprises: The sixth strip is located between the first outlet flow path and the second outlet flow path, and the first end of the sixth strip is fixed to the first side, and the second end of the sixth strip is separated from the second side by a specified distance; The seventh strip is connected at both ends to the second end of the sixth strip and the end of the flow equalization plate near the second side, respectively. The inlet flow path, the flow equalization plate, the first outlet flow path, the sixth plate, and the second outlet flow path are arranged sequentially from top to bottom in the height direction.

9. A heat exchanger, characterized in that, include: The heat exchanger tube assembly has multiple refrigerant flow paths arranged separately in the vertical direction; Multiple fins are arranged corresponding to the heat exchange tube assembly; The first refrigerant distributor is connected to the outlets of the multiple refrigerant flow paths; The fluid distributor according to any one of claims 1 to 8, wherein the first outlet flow path and the second outlet flow path of the fluid distributor are respectively connected to the inlets of the two adjacent refrigerant flow paths in the height direction.

10. The heat exchanger according to claim 9, characterized in that, Also includes: The distributor body has a main body inlet and multiple main body outlets, and the multiple main body outlets are respectively connected to the inlet flow path of the fluid distributor through pipelines.

11. The heat exchanger according to claim 9, characterized in that, The fins are arranged along the extension direction perpendicular to the heat exchange tube assembly.

12. The heat exchanger according to claim 9, characterized in that, The refrigerant flow path is either an S-shaped flow path or a straight flow path.

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