Heat exchange flow equalization device and heat exchanger

Abstract

The application discloses a heat exchange flow equalizing device and a heat exchanger, and relates to the technical field of heat exchange. The heat exchange flow equalizing device comprises a flow equalizing inlet pipe, a flow equalizing outlet pipe, a flow equalizing outlet header, a flow equalizing inlet header and a flow equalizing plate. The flow equalizing outlet header is connected with a plurality of flow equalizing inlet pipes. The flow equalizing inlet header is connected with a plurality of flow equalizing outlet pipes. The pipe cavity of the flow equalizing outlet header is communicated with the pipe cavity of the flow equalizing inlet header. One part of the flow equalizing plate is arranged in the pipe cavity of the flow equalizing outlet header, and the other part of the flow equalizing plate is arranged in the pipe cavity of the flow equalizing inlet header, so that the pipe cavity of the flow equalizing inlet header is divided into two pipe cavities in the radial direction of the flow equalizing inlet header. The flow equalizing plate is provided with a flow equalizing hole at the end away from the flow equalizing outlet header. The heat exchanger comprises the heat exchange flow equalizing device. The application aims to solve the technical problem that the refrigerant is not evenly distributed in the flat pipe, thereby reducing the heat exchange performance of the heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, and more specifically, to a heat exchange flow equalization device and a heat exchanger. Background Technology

[0002] In refrigerant heat exchangers, due to the significant differences in density, viscosity, and other physical properties between the liquid and gas in gaseous and liquid refrigerants, gas-liquid stratification occurs when the two-phase refrigerant enters the heat exchanger, such as in a microchannel heat exchanger. This leads to uneven distribution of the refrigerant in the flat tubes, with some flat tubes experiencing dry evaporation and others experiencing excessive liquid supply, thereby reducing the heat exchanger's heat transfer performance. Summary of the Invention

[0003] The purpose of this invention is to provide a heat exchange flow equalization device and a heat exchanger, so as to solve to a certain extent the technical problem in the prior art that the uneven distribution of refrigerant in the flat tube leads to a reduction in the heat exchange performance of the heat exchanger.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A heat exchange flow equalization device includes a flow equalization inlet pipe, a flow equalization outlet pipe, a flow equalization outlet manifold, a flow equalization inlet manifold, and a flow equalization plate;

[0006] The equal flow outlet manifold is connected to a plurality of equal flow inlets, and the plurality of equal flow inlets are arranged in parallel at intervals along the axial direction of the equal flow outlet manifold.

[0007] The equal flow inlet manifold is connected to a plurality of equal flow outlet pipes, and the plurality of equal flow outlet pipes are arranged in parallel at intervals along the axial direction of the equal flow inlet manifold.

[0008] The lumen of the flow equalization outlet manifold is connected to the lumen of the flow equalization inlet manifold;

[0009] A portion of the flow equalization plate is disposed within the cavity of the flow equalization outlet manifold to divide the corresponding cavity of the flow equalization outlet manifold into two cavities in its own radial direction; another portion of the flow equalization plate is disposed within the cavity of the flow equalization inlet manifold to divide the cavity of the flow equalization inlet manifold into two cavities in its own radial direction; a flow equalization hole is provided at the end of the flow equalization plate away from the flow equalization outlet manifold.

[0010] In any of the above technical solutions, optionally, the flow equalization plate includes a front plate portion, a middle plate portion, and an opening plate portion connected in sequence;

[0011] The front plate portion is disposed within the lumen of the flow equalizing outlet manifold, and the front plate portion divides the corresponding lumen of the flow equalizing outlet manifold into a first flow equalizing outlet manifold lumen and a second flow equalizing outlet manifold lumen; wherein, the first flow equalizing outlet manifold lumen is in communication with the flow equalizing inlet pipe;

[0012] The middle plate portion and the perforated plate portion are both disposed within the lumen of the flow equalizing inlet manifold; and the middle plate portion and the perforated plate portion divide the lumen of the flow equalizing inlet manifold into a first flow equalizing inlet manifold lumen and a second flow equalizing inlet manifold lumen; wherein, the first flow equalizing inlet manifold lumen is in communication with the flow equalizing outlet pipe;

[0013] The first flow equalizing outlet manifold lumen is in communication with the first flow equalizing inlet manifold lumen, and the second flow equalizing outlet manifold lumen is in communication with the second flow equalizing inlet manifold lumen;

[0014] A plurality of the flow equalizing holes are provided on the perforated plate portion; the first flow equalizing inlet manifold lumen and the second flow equalizing inlet manifold lumen are in communication through the flow equalizing holes.

[0015] In any of the above technical solutions, optionally, the number of the flow equalizing inlet pipes is M, the number of the flow equalizing outlet pipes is N, the number of the flow equalizing inlet pipes corresponding to the front plate portion is m, and the number of the flow equalizing outlet pipes corresponding to the middle plate portion is n, then:

[0016] (m / M×N - 1) < n < (m / M×N + 1), and m / M ≤ 0.5.

[0017] In any of the above technical solutions, optionally, along the axial direction of the flow equalizing outlet manifold, the length of the front plate portion is less than the length of the lumen of the flow equalizing outlet manifold; [[ID=2*]]

[0018] Along the axial direction of the flow equalizing inlet manifold, the sum of the lengths of the middle plate portion and the perforated plate portion is less than or equal to the length of the lumen of the flow equalizing inlet manifold.

[0019] In any of the above technical solutions, optionally, the length of the front plate portion is not greater than half of the length of the lumen of the flow equalizing outlet manifold;

[0020] The length of the middle plate portion is less than the length of the perforated plate portion.

[0021] In any of the above technical solutions, optionally, two convex structures are provided on the flow equalizing plate;

[0022] The first convex structure is disposed at one end of the front plate portion away from the perforated plate portion, and the first convex structure is located within the first flow equalizing outlet manifold lumen;

[0023] The second protrusion is disposed at the junction of the middle plate and the perforated plate, and the second protrusion is located in the first cavity of the flow equalization inlet.

[0024] Optionally, in any of the above technical solutions, a plurality of the flow equalization inlet pipes are evenly arranged on the flow equalization outlet manifold;

[0025] Multiple flow equalization outlet pipes are evenly arranged on the flow equalization inlet manifold;

[0026] The distance between two adjacent equal flow inlets is equal to or unequal to the distance between two adjacent equal flow outlets.

[0027] Optionally, in any of the above technical solutions, the flow equalization outlet manifold and the flow equalization inlet manifold are integrally formed;

[0028] The flow equalization inlet pipe is a refrigerant flat pipe;

[0029] The uniform outflow pipe is a refrigerant flat pipe.

[0030] A heat exchanger, including a heat exchange flow equalization device.

[0031] In any of the above technical solutions, optionally, the heat exchanger includes a first manifold; a first baffle plate is provided in the middle of the cavity of the first manifold; along the axial direction of the first manifold, the first baffle plate divides the cavity of the first manifold into a first inlet cavity and a first outlet cavity.

[0032] The inlet of the heat exchange flow equalization device is connected to the first flow collection inlet cavity, and the outlet of the heat exchange flow equalization device is connected to the first flow collection outlet cavity.

[0033] Optionally, in any of the above technical solutions, the heat exchanger further includes a second manifold and a third manifold;

[0034] A second baffle plate is provided in the middle of the cavity of the second manifold; along the axial direction of the second manifold, the second baffle plate divides the cavity of the second manifold into a second inlet cavity and a second outlet cavity.

[0035] The first collection outlet cavity is connected to the second collection outlet cavity. A plurality of heat exchange inlet pipes are arranged in parallel between the second collection outlet cavity and the third collection pipe. A plurality of heat exchange outlet pipes are arranged in parallel between the third collection pipe and the second collection inlet cavity.

[0036] The first manifold is provided with a main inlet that communicates with the first manifold inlet cavity;

[0037] The second manifold is provided with a total outlet that communicates with the second manifold inlet cavity.

[0038] The main beneficial effects of this invention are:

[0039] The heat exchange flow equalization device and heat exchanger provided by the present invention divide the corresponding cavity of the flow equalization outlet manifold into two cavities in its own radial direction by a portion of the flow equalization plate, and divides the cavity of the flow equalization inlet manifold into two cavities in its own radial direction by another portion of the flow equalization plate. The end of the flow equalization plate away from the flow equalization outlet manifold is provided with a flow equalization hole, so that the flow equalization plate extending into the flow equalization outlet manifold pre-divides the heat exchange medium into two parts, which enter the flow equalization inlet manifold and flow out through different flow equalization outlet pipes respectively. This effectively improves the flow distribution efficiency of the heat exchange medium and can achieve a more uniform distribution of the heat exchange medium, thereby improving the heat exchange performance of the heat exchanger with the heat exchange flow equalization device to a certain extent.

[0040] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the heat exchange flow equalization device provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the flow equalization plate provided in an embodiment of the present invention;

[0044] Figure 3 This is another structural schematic diagram of the flow equalization plate provided in an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of another heat exchanger provided in an embodiment of the present invention;

[0047] Figure 6 for Figure 5 The heat exchanger shown is a cross-sectional view along line AA.

[0048] Figure 7 for Figure 5 The heat exchanger shown is a cross-sectional view along the BB direction.

[0049] Icons: 100 - Heat exchanger flow equalization device; 110 - Flow equalization inlet pipe; 120 - Flow equalization outlet pipe; 130 - Flow equalization outlet manifold; 131 - Flow equalization outlet manifold first cavity; 132 - Flow equalization outlet manifold second cavity; 140 - Flow equalization inlet manifold; 141 - Flow equalization inlet manifold first cavity; 142 - Flow equalization inlet manifold second cavity; 150 - Flow equalization plate; 151 - Flow equalization hole; 152 - Front plate; 153 - Middle plate; 154 - Perforated plate; 155 - Protruding structure;

[0050] 210-First manifold; 211-First baffle plate; 212-First manifold inlet cavity; 213-First manifold outlet cavity; 220-Second manifold; 221-Second baffle plate; 222-Second manifold inlet cavity; 223-Second manifold outlet cavity; 230-Third manifold; 240-Main inlet; 250-Main outlet. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0058] Example

[0059] This embodiment provides a heat exchange flow equalization device and a heat exchanger; please refer to... Figures 1-7 , Figure 1 This is a schematic diagram of the heat exchange flow equalization device provided in this embodiment; Figure 2 and Figure 3 These are schematic diagrams of two different structures of the flow equalization plate provided in this embodiment; Figure 4 This is a schematic diagram of the heat exchanger provided in this embodiment;

[0060] Figure 5 This is a schematic diagram of another heat exchanger provided in this embodiment. Figure 6 for Figure 5 The heat exchanger shown is a cross-sectional view along line AA. Figure 7 for Figure 5 The image shows a cross-sectional view of the heat exchanger along the BB direction. Figure 1 , Figure 4 and Figure 6 The arrows shown indicate the direction of heat exchange medium flow. Figure 2 , Figure 3 and Figure 7 The front plate section 152, the middle plate section 153, and the perforated plate section 154 of the flow equalization plate are separated by dotted and dashed lines.

[0061] The heat exchange flow equalization device provided in this embodiment is used in refrigerant heat exchangers, such as in parallel flow evaporators.

[0062] See Figures 1-3As shown, the heat exchange flow equalization device includes a flow equalization inlet pipe 110, a flow equalization outlet pipe 120, a flow equalization outlet manifold 130, a flow equalization inlet manifold 140, and a flow equalization plate 150.

[0063] The flow equalization outlet manifold 130 is connected to a plurality of flow equalization inlet pipes 110, and the plurality of flow equalization inlet pipes 110 are arranged in parallel at intervals along the axial direction of the flow equalization outlet manifold 130; optionally, the plurality of flow equalization inlet pipes 110 are arranged in parallel at uniform intervals. Alternatively, the plurality of flow equalization inlet pipes 110 are evenly arranged on the flow equalization outlet manifold 130.

[0064] A plurality of equalizing outlet pipes 120 are connected to the equalizing inlet manifold 140, and the plurality of equalizing outlet pipes 120 are arranged in parallel at intervals along the axial direction of the equalizing inlet manifold 140; optionally, the plurality of equalizing outlet pipes 120 are arranged in parallel at uniform intervals. Alternatively, the plurality of equalizing outlet pipes 120 are evenly arranged on the equalizing inlet manifold 140. Optionally, the distance between two adjacent equalizing inlet pipes 110 may be equal to or unequal to the distance between two adjacent equalizing outlet pipes 120.

[0065] The lumen of the flow equalization outlet manifold 130 is connected to the lumen of the flow equalization inlet manifold 140. Optionally, the axial direction of the flow equalization outlet manifold 130 is collinear with the axial direction of the flow equalization inlet manifold 140.

[0066] A portion of the flow equalization plate 150 is disposed within the cavity of the flow equalization outlet manifold 130 to divide the corresponding cavity of the flow equalization outlet manifold 130 into two cavities radially therefrom; for example, the two cavities are the first flow equalization outlet manifold cavity 131 and the second flow equalization outlet manifold cavity 132, respectively. In other words, along the radial direction of the flow equalization outlet manifold 130, the flow equalization plate 150 divides the corresponding cavity of the flow equalization outlet manifold 130 into two cavities. Optionally, the flow equalization plate 150 divides the corresponding cavity of the flow equalization outlet manifold 130 into two non-communicating cavities.

[0067] Another portion of the flow equalization plate 150 is disposed within the cavity of the flow equalization inlet manifold 140, thereby dividing the cavity of the flow equalization inlet manifold 140 into two cavities radially therefrom; for example, the two cavities are respectively the first flow equalization inlet manifold cavity 141 and the second flow equalization inlet manifold cavity 142. That is, along the radial direction of the flow equalization inlet manifold 140, the flow equalization plate 150 divides the cavity of the flow equalization inlet manifold 140 into two cavities. Optionally, the flow equalization plate 150 divides the cavity of the flow equalization inlet manifold 140 into two non-communicating cavities.

[0068] A flow equalization hole 151 is provided at the end of the flow equalization plate 150 away from the flow equalization outlet manifold 130.

[0069] In the heat exchange flow equalization device described in this embodiment, the heat exchange medium flows sequentially from multiple equalization inlet pipes 110 into the equalization outlet manifold 130 and the equalization inlet manifold 140, and then flows out from multiple equalization outlet pipes 120. Specifically, when the heat exchange medium flows from the equalization outlet manifold 130 into the equalization inlet manifold 140, the heat exchange medium is divided into two parts by the equalization plate 150, flowing into the equalization inlet manifold 140. One part flows directly into the partial equalization outlet pipe 120, and the other part flows into the partial equalization outlet pipe 120 through the equalization hole 151.

[0070] The heat exchange medium flowing within the heat exchange equalization device described in this embodiment can be a refrigerant, such as a liquid refrigerant or a gas-liquid refrigerant.

[0071] In an optional embodiment, the flow equalization outlet manifold 130 and the flow equalization inlet manifold 140 are integrally formed to reduce the production cost of the heat exchange flow equalization device.

[0072] Optionally, the flow inlet pipe 110 may be a refrigerant flat pipe or a pipe of other structures.

[0073] Optionally, the outflow pipe 120 may be a refrigerant flat pipe or a pipe of other structures. Optionally, the refrigerant flat pipe may have multiple baffles along its width direction, and the baffles may extend along the axial direction of the refrigerant flat pipe, so that the baffles divide the refrigerant flat pipe into multiple non-communicating chambers.

[0074] In this embodiment, the heat exchange flow equalization device uses a portion of the flow equalization plate 150 to divide the corresponding cavity of the flow equalization outlet manifold 130 into two cavities in its own radial direction, and another portion of the flow equalization plate 150 to divide the cavity of the flow equalization inlet manifold 140 into two cavities in its own radial direction. The end of the flow equalization plate 150 away from the flow equalization outlet manifold 130 is provided with a flow equalization hole 151, so that the flow equalization plate 150 extending into the flow equalization outlet manifold 130 divides the heat exchange medium into two parts in advance, which enter the flow equalization inlet manifold 140 and flow out through different flow equalization outlet pipes 120 respectively. This effectively improves the flow distribution efficiency of the heat exchange medium and can achieve a more uniform distribution of the heat exchange medium, thereby improving the heat exchange performance of the heat exchanger with the heat exchange flow equalization device to a certain extent.

[0075] See Figures 1-3 As shown, in an optional embodiment, the flow equalization plate 150 includes a front plate portion 152, a middle plate portion 153, and an opening plate portion 154 connected in sequence; wherein, the front plate portion 152 is not perforated, the middle plate portion 153 is not perforated, and the middle plate portion 153 is located between the front plate portion 152 and the opening plate portion 154.

[0076] The front plate portion 152 is disposed inside the cavity of the equalization outlet manifold 130, and along the radial direction of the equalization outlet manifold 130, the front plate portion 152 divides the corresponding cavity of the equalization outlet manifold 130 into the equalization outlet manifold first cavity 131 and the equalization outlet manifold second cavity 132; wherein, the equalization outlet manifold first cavity 131 is connected to the equalization inlet pipe 110.

[0077] Both the middle plate portion 153 and the perforated plate portion 154 are disposed within the cavity of the flow equalization inlet manifold 140; and along the radial direction of the flow equalization inlet manifold 140, the middle plate portion 153 and the perforated plate portion 154 divide the cavity of the flow equalization inlet manifold 140 into a first flow equalization inlet manifold cavity 141 and a second flow equalization inlet manifold cavity 142; wherein, the first flow equalization inlet manifold cavity 141 is connected to the flow equalization outlet pipe 120.

[0078] The first flow equalization outlet collection chamber 131 is connected to the first flow equalization inlet collection chamber 141, and the second flow equalization outlet collection chamber 132 is connected to the second flow equalization inlet collection chamber 142.

[0079] The perforated plate 154 is provided with a plurality of flow equalization holes 151; the first flow equalization inlet collector 141 and the second flow equalization inlet collector 142 are connected through the flow equalization holes 151. Through the flow equalization holes 151, the heat exchange medium in the second flow equalization inlet collector 142 can pass through the first flow equalization inlet collector 141 and flow into the corresponding flow equalization outlet pipe 120.

[0080] In existing technologies, the uniformity of heat exchange medium flow is improved by arranging uniform or non-uniform perforated plates at the inlet of parallel pipes. However, when there are a large number of parallel flat pipes, the effect of the flow equalization plate is greatly affected by the flow rate changes, resulting in problems such as low flow rate of heat exchange medium far from the inlet and high flow rate of heat exchange medium near the inlet. At the same time, when the flow rate of heat exchange medium is large, the flat pipes near the inlet are difficult to pass through due to the flow dead zone.

[0081] Because heat exchange equipment with multiple heat exchange media has issues with heat exchange medium uniformity when the process changes or there are many parallel tubes, it will greatly affect the performance of the heat exchange equipment and the uniformity of the outlet air temperature. The heat exchange flow equalization device described in this embodiment provides a heat exchange medium flow equalization device that is easy to manufacture, install, and has wide flow applicability. The flow equalization plate 150 has no holes in the front section and holes in the rear section, that is, the front plate 152 and the middle plate 153 have no holes, while the perforated plate 154 has holes. The front plate 152 extends into the cavity of the flow equalization outlet manifold 130 and divides the heat exchange medium into upper and lower parts according to the number of tubes. The upper and lower parts enter the flow equalization inlet manifold 140 from the first flow equalization outlet manifold 131 and the second flow equalization outlet manifold 132 of the flow equalization outlet manifold 130, respectively. The number of tubes in the unperforated area (i.e., the middle plate 153) of the flow equalization inlet manifold 140 is relatively small, resulting in a good distribution effect. The number of holes in the perforated area (i.e., the perforated plate 154) of the flow equalization inlet manifold 140 is relatively large, so the heat exchange medium is evenly distributed through the perforated flow equalization plate 150.

[0082] For example, after the heat exchange medium flows from multiple equal flow inlet pipes 110 into the equal flow outlet manifold 130, it splits into two streams:

[0083] The first heat exchange medium: The heat exchange medium flowing out of the equal flow inlet pipe 110 corresponding to the front plate 152 basically flows through the equal flow outlet first collection tube 131 to the equal flow inlet first collection tube 141, and flows out through the equal flow outlet pipe 120 corresponding to the middle plate 153.

[0084] The second heat exchange medium: The heat exchange medium that does not have a corresponding other equal flow inlet pipe 110 to flow out of the front plate part 152 is blocked by the front plate part 152. It basically flows through the equal flow outlet second collection tube 132 to the equal flow inlet second collection tube 142, flows through the equal flow hole 151 of the equal flow plate 150 to the equal flow inlet first collection tube 141 corresponding to the perforated plate part 154, and then flows out through the equal flow outlet pipe 120 corresponding to the perforated plate part 154.

[0085] The heat exchange flow equalization device described in this embodiment can effectively avoid the problem of insufficient heat exchange medium in the first few equalization inlet pipes 110 when the heat exchange medium changes flow between two processes and there is a flow dead zone at the inlet position of the next process. At the same time, by dividing the heat exchange medium flow into two parts in advance, the number of pipes involved in the flow distribution of each heat exchange medium is reduced, which greatly improves the efficiency of heat exchange medium flow distribution.

[0086] In an alternative solution of this embodiment, the number of the flow equalizing inlet pipes 110 is M, that is, M flow equalizing inlet pipes 110 are connected to the flow equalizing outlet manifold pipe 130, the number of the flow equalizing outlet pipes 120 is N, that is, N flow equalizing outlet pipes 120 are connected to the flow equalizing inlet manifold pipe 140. The number of the flow equalizing inlet pipes 110 corresponding to the front plate portion 152 of the flow equalizing plate 150 is m, and the number of the flow equalizing outlet pipes 120 corresponding to the middle plate portion 153 is n. Then:

[0087] m / M×N - 1 < n < m / M×N + 1, and m / M ≤ 0.5. By controlling the lengths of the front plate portion 152 and the middle plate portion 153, the non-opening section can be prevented from being too long to reduce the flow equalizing effect.

[0088] Refer to Figure 1 As shown, in an alternative solution of this embodiment, along the axial direction of the flow equalizing outlet manifold pipe 130, the length of the front plate portion 152 is less than the lumen length of the flow equalizing outlet manifold pipe 130. By controlling the length of the front plate portion 152, the non-opening section can be prevented from being too long to reduce the flow equalizing effect.

[0089] Optionally, along the axial direction of the flow equalizing outlet manifold pipe 130, the length of the front plate portion 152 is not greater than half of the lumen length of the flow equalizing outlet manifold pipe 130.

[0090] As Figure 7 shown, in an alternative solution of this embodiment, along the axial direction of the flow equalizing inlet manifold pipe 140, the sum of the length of the middle plate portion 153 and the length of the perforated plate portion 154 is less than or equal to the lumen length of the flow equalizing inlet manifold pipe 140. That is, there is a distance between the flow equalizing plate 150 and the end of the flow equalizing inlet manifold pipe 140. With such a design, it is convenient to fix the flow equalizing plate 150 in the lumen of the flow equalizing inlet manifold pipe 140, and thus it is convenient for the production and processing of the heat exchange flow equalizing device.

[0091] Optionally, along the axial direction of the flow equalizing inlet manifold pipe 14, the length of the middle plate portion 153 is less than the length of the perforated plate portion 154. By making the length of the middle plate portion 153 less than the length of the perforated plate portion 154, the flow rate of the heat exchange medium at the end of the flow equalizing inlet manifold pipe 140 far from the flow equalizing outlet manifold pipe 130 can be increased to a certain extent, and the heat exchange efficiency at this place can be improved.

[0092] Refer to Figure 3 As shown, in an alternative solution of this embodiment, two convex structures 155 are provided on the flow equalizing plate 150. The convex structures 155 are provided on the side of the flow equalizing plate 150 close to the flow equalizing inlet pipes 110 and the flow equalizing outlet pipes 120.

[0093] Specifically, the first protrusion 155 is disposed at one end of the front plate portion 152 far from the orifice plate portion 154, and the first protrusion 155 is located in the first flow equalization outlet collection cavity 131; optionally, the height of the first protrusion 155 is not higher than the height of the first flow equalization outlet collection cavity 131.

[0094] The second protrusion 155 is disposed at the junction of the middle plate portion 153 and the perforated plate portion 154, and the second protrusion 155 is located within the first flow equalization inlet collection cavity 141. Optionally, the height of the second protrusion 155 is not higher than the height of the first flow equalization inlet collection cavity 141.

[0095] The heat exchange flow equalization device described in this embodiment, by providing two protruding structures 155 on the flow equalization plate 150, allows the heat exchange medium flowing from the flow equalization outlet manifold 130 to the flow equalization inlet manifold 140 to be better divided into two streams. This allows the first stream of heat exchange medium flowing out of the flow equalization inlet pipe 110 corresponding to the front plate portion 152 to flow more accurately through the flow equalization outlet manifold 131 to the flow equalization inlet manifold 141, and then out through the flow equalization outlet pipe 120 corresponding to the middle plate portion 153. This also allows the second stream of heat exchange medium flowing out of the front plate portion 152 without corresponding other flow equalization inlet pipes 110 to be blocked by the protruding structures 155, allowing it to flow more accurately through the flow equalization outlet manifold 132 to the flow equalization inlet manifold 142, then through the flow equalization holes 151 of the flow equalization plate 150 to the flow equalization inlet manifold 141 corresponding to the perforated plate portion 154, and then out through the flow equalization outlet pipe 120 corresponding to the perforated plate portion 154. The two protruding structures 155 greatly improve the efficiency of heat exchange medium flow distribution.

[0096] This embodiment also provides a heat exchanger, including the heat exchange flow equalization device 100 described in any of the above embodiments. The heat exchanger is, for example, a parallel flow evaporator.

[0097] The heat exchanger described in this embodiment uses a flow equalization plate 150 of the heat exchange flow equalization device 100 to divide the corresponding cavity of the flow equalization outlet manifold 130 into two cavities in its own radial direction. Another part of the flow equalization plate 150 divides the cavity of the flow equalization inlet manifold 140 into two cavities in its own radial direction. The end of the flow equalization plate 150 away from the flow equalization outlet manifold 130 is provided with a flow equalization hole 151, so that the flow equalization plate 150 extending into the flow equalization outlet manifold 130 divides the heat exchange medium into two parts in advance, which enter the flow equalization inlet manifold 140 and flow out through different flow equalization outlet pipes 120 respectively. This effectively improves the flow distribution efficiency of the heat exchange medium and can achieve a more uniform distribution of the heat exchange medium, thereby improving the heat exchange performance of the heat exchanger with the heat exchange flow equalization device to a certain extent.

[0098] See Figure 4As shown, in an optional embodiment, the heat exchanger includes a first manifold 210; a first baffle plate 211 is provided in the middle of the cavity of the first manifold 210; along the axial direction of the first manifold 210, the first baffle plate 211 divides the cavity of the first manifold 210 into a first inlet cavity 212 and a first outlet cavity 213.

[0099] The inlet of the equalization inlet pipe 110 of the heat exchange equalization device 100 is connected to the first flow collection inlet pipe cavity 212, and the outlet of the equalization inlet pipe 110 is connected to the equalization outlet flow collection pipe 130.

[0100] The inlet of the equalization outlet pipe 120 of the heat exchange equalization device 100 is connected to the equalization inlet manifold 140, and the outlet of the equalization outlet pipe 120 is connected to the first manifold outlet cavity 213.

[0101] In the heat exchanger described in this embodiment, the heat exchange medium flows in from the first collection inlet tube 212, flows sequentially through the equalization inlet tube 110, the equalization outlet collection tube 130, the equalization inlet collection tube 140 and the equalization outlet tube 120, and flows into the first collection outlet tube 213.

[0102] See Figures 5-7 As shown, in an optional embodiment, the heat exchanger further includes a second manifold 220 and a third manifold 230.

[0103] A second baffle plate 221 is provided in the middle of the cavity of the second manifold 220; along the axial direction of the second manifold 220, the second baffle plate 221 divides the cavity of the second manifold 220 into a second inlet cavity 222 and a second outlet cavity 223.

[0104] The first collector outlet cavity 213 is connected to the second collector outlet cavity 223. Several heat exchange inlet pipes are arranged in parallel between the second collector outlet cavity 223 and the third collector pipe 230. Several heat exchange outlet pipes are arranged in parallel between the third collector pipe 230 and the second collector inlet cavity 222.

[0105] The first manifold 210 is provided with a main inlet 240 that communicates with the first manifold inlet cavity 212.

[0106] The second manifold 220 is provided with a total outlet 250 that communicates with the second manifold inlet cavity 222.

[0107] In the heat exchanger described in this embodiment, the heat exchange medium flows into the heat exchanger from the main inlet 240, and flows sequentially through the first flow inlet tube 212, the equal flow inlet tube 110, the equal flow outlet tube 130, the equal flow inlet tube 140, the equal flow outlet tube 120, the first flow outlet tube 213, the second flow outlet tube 223, the heat exchange inlet tube, the third flow outlet tube 230, the heat exchange outlet tube, and the second flow inlet tube 222, and flows out of the heat exchanger from the main outlet 250.

[0108] The heat exchanger provided in this embodiment includes the heat exchange flow equalization device described above. The technical features of the disclosed heat exchange flow equalization device are also applicable to this heat exchanger, and the technical features of the disclosed heat exchange flow equalization device will not be described again. The heat exchanger in this embodiment has the advantages of the disclosed heat exchange flow equalization device, and the advantages of the disclosed heat exchange flow equalization device will not be described again here.

[0109] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat exchange flow equalization device, characterized by, The equal-flow inlet pipe (110), the equal-flow outlet pipe (120), the equal-flow outlet manifold (130), the equal-flow inlet manifold (140) and the equal-flow plate (150) are included. A plurality of the equal-flow inlet pipes (110) are communicated with the equal-flow outlet manifold (130) and are arranged in sequence along the axial direction of the equal-flow outlet manifold (130) and are spaced apart in parallel. A plurality of the equal-flow outlet pipes (120) are communicated with the equal-flow inlet manifold (140) and are arranged in sequence along the axial direction of the equal-flow inlet manifold (140) and are spaced apart in parallel. The lumen of the equal-flow outlet manifold (130) is communicated with the lumen of the equal-flow inlet manifold (140). A part of the equal-flow plate (150) is arranged in the lumen of the equal-flow outlet manifold (130) to divide the corresponding lumen of the equal-flow outlet manifold (130) into two lumens in the radial direction of the equal-flow outlet manifold (130); another part of the equal-flow plate (150) is arranged in the lumen of the equal-flow inlet manifold (140) to divide the lumen of the equal-flow inlet manifold (140) into two lumens in the radial direction of the equal-flow inlet manifold (140); and the equal-flow plate (150) is provided with the equal-flow hole (151) away from one end of the equal-flow outlet manifold (130).

2. The heat exchange flow uniformization device according to claim 1, characterized in that, The equal-flow plate (150) includes the front plate part (152), the middle plate part (153) and the perforated plate part (154) connected in sequence. The front plate part (152) is arranged in the lumen of the equal-flow outlet manifold (130) and divides the corresponding lumen of the equal-flow outlet manifold (130) into the equal-flow outlet manifold first lumen (131) and the equal-flow outlet manifold second lumen (132); wherein the equal-flow outlet manifold first lumen (131) is communicated with the equal-flow inlet pipe (110). The middle plate part (153) and the perforated plate part (154) are both arranged in the lumen of the equal-flow inlet manifold (140) and divide the lumen of the equal-flow inlet manifold (140) into the equal-flow inlet manifold first lumen (141) and the equal-flow inlet manifold second lumen (142); wherein the equal-flow inlet manifold first lumen (141) is communicated with the equal-flow outlet pipe (120). The equal-flow outlet manifold first lumen (131) is communicated with the equal-flow inlet manifold first lumen (141) and the equal-flow outlet manifold second lumen (132) is communicated with the equal-flow inlet manifold second lumen (142). A plurality of the equal-flow holes (151) are arranged on the perforated plate part (154); the equal-flow inlet manifold first lumen (141) and the equal-flow inlet manifold second lumen (142) are communicated through the equal-flow holes (151).

3. The heat exchange flow uniformization device according to claim 2, characterized in that, The number of the uniform flow inlet pipes (110) is M, the number of the uniform flow outlet pipes (120) is N, the number of the uniform flow inlet pipes (110) corresponding to the front plate part (152) is m, the number of the uniform flow outlet pipes (120) corresponding to the middle plate part (153) is n, then: (m / M×N-1)<n<(m / M×N+1), and m / M≤0.

5.

4. The heat exchange flow uniformization device according to claim 2, characterized in that, Along the axial direction of the uniform flow outlet manifold (130), the length of the front plate part (152) is less than the lumen length of the uniform flow outlet manifold (130); Along the axial direction of the uniform flow inlet manifold (140), the sum of the length of the middle plate part (153) and the length of the perforated plate part (154) is less than or equal to the lumen length of the uniform flow inlet manifold (140).

5. The heat exchange flow uniformization device according to claim 4, characterized in that, The length of the front plate part (152) is not greater than half of the lumen length of the uniform flow outlet manifold (130); The length of the middle plate part (153) is less than the length of the perforated plate part (154).

6. The heat exchange flow uniformization device according to claim 2, wherein Two protruding structures (155) are arranged on the uniform flow plate (150); The first protruding structure (155) is arranged at the end of the front plate part (152) away from the perforated plate part (154), and the first protruding structure (155) is located in the uniform flow outlet manifold first lumen (131); The second protruding structure (155) is arranged at the junction of the middle plate part (153) and the perforated plate part (154), and the second protruding structure (155) is located in the uniform flow inlet manifold first lumen (141).

7. The heat exchange flow uniformization device of claim 1, wherein A plurality of uniform flow inlet pipes (110) are uniformly arranged on the uniform flow outlet manifold (130); A plurality of uniform flow outlet pipes (120) are uniformly arranged on the uniform flow inlet manifold (140); The spacing between adjacent two uniform flow inlet pipes (110) is equal to or different from the spacing between adjacent two uniform flow outlet pipes (120); The uniform flow outlet manifold (130) and the uniform flow inlet manifold (140) are integrally formed; The uniform flow inlet pipe (110) adopts a refrigerant flat tube; The uniform flow outlet pipe (120) adopts a refrigerant flat tube.

8. A heat exchanger, characterized by The heat exchange uniform flow device (100) according to any one of claims 1-7.

9. The heat exchanger of claim 8, wherein A first manifold (210) is arranged, and a first flow separation plate (211) is arranged in the middle of the lumen of the first manifold (210); along the axial direction of the first manifold (210), the first flow separation plate (211) separates the lumen of the first manifold (210) into a first flow inlet lumen (212) and a first flow outlet lumen (213); The inlet of the uniform flow inlet pipe (110) of the heat exchange uniform flow device (100) is communicated with the first flow inlet lumen (212), and the outlet of the uniform flow outlet pipe (120) of the heat exchange uniform flow device (100) is communicated with the first flow outlet lumen (213).

10. The heat exchanger of claim 9, wherein A second manifold (220) and a third manifold (230) are further arranged. The second manifold (220) is provided with a second partition plate (221) in the middle of the lumen; along the axial direction of the second manifold (220), the second partition plate (221) divides the lumen of the second manifold (220) into a second inlet lumen (222) and a second outlet lumen (223); The first outlet lumen (213) and the second outlet lumen (223) are communicated, a plurality of parallel heat exchange inlet pipes are arranged between the second outlet lumen (223) and the third manifold (230), and a plurality of parallel heat exchange outlet pipes are arranged between the third manifold (230) and the second inlet lumen (222); The first manifold (210) is provided with a total inlet (240) communicated with the first inlet lumen (212); The second manifold (220) is provided with a total outlet (250) communicated with the second inlet lumen (222).

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