Heat exchanger with built-in shunting pore plate

Abstract

The utility model relates to the technical field of heat pump systems, in particular to a heat exchanger with a built-in shunting pore plate. The heat exchanger with the built-in flow dividing pore plates comprises a body, a first flow collecting pipe, a second flow collecting pipe and the multiple flow dividing pore plates. Wherein a plurality of first flow channels and a plurality of second flow channels are arranged in the body. The first collecting pipe and the second collecting pipe are arranged at the two ends of the body respectively, a first partition plate is arranged in the first collecting pipe, and the first partition plate divides the inner space of the first collecting pipe into a first cavity and a third cavity which are isolated from each other; a second cavity is formed in the second collecting pipe; the first cavity is sequentially communicated with the first flow channel, the second cavity, the second flow channel and the third cavity. A shunting pore plate is arranged in the first cavity; and / or a shunting pore plate is arranged in the second chamber; and / or a shunting pore plate is arranged in the third chamber; the split orifice plate is configured to distribute a refrigerant. The heat exchanger with the built-in shunting pore plate is simple in structure, saves installation space and improves heat exchange efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump systems, in particular to a heat exchanger with a built-in diversion orifice plate. Background Art

[0002] Currently, heat pump systems typically include a heat exchanger, which can perform different functions for cooling and heating. When the heat pump system is in heating mode, the heat exchanger can function as an evaporator; when in cooling mode, it can function as a condenser. When the heat exchanger functions as an evaporator, the inlet refrigerant is in a two-phase state, resulting in poor distribution of the refrigerant under the influence of gravity. This can cause some heat exchange tubes to be empty of liquid refrigerant, reducing the heat exchange efficiency of the heat exchanger.

[0003] In existing technology, even refrigerant distribution is achieved by adding external piping to the heat exchanger's manifold, using it to guide liquid refrigerant from the lower chamber to the upper chamber. This approach not only increases the installation space for the external piping, inconveniences the layout and installation of the heat exchanger, and reduces the heat exchanger's integration, but also reduces some heat exchange area and lowers the heat exchange efficiency.

[0004] Therefore, it is urgent to design a heat exchanger with a built-in diversion orifice plate to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heat exchanger with a built-in diverter orifice plate, which has a simple structure, saves installation space, improves integration, and improves heat exchange efficiency.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a heat exchanger with a built-in diverter orifice plate, comprising:

[0008] A main body, wherein a plurality of first flow channels and a plurality of second flow channels are provided in the main body;

[0009] a first manifold and a second manifold, the first manifold and the second manifold being respectively disposed at both ends of the body; a first partition being disposed within the first manifold, the first partition dividing the interior space of the first manifold into a first chamber and a third chamber that are isolated from each other; a second chamber being disposed within the second manifold; the first chamber being in sequential communication with the first flow channel, the second chamber, the second flow channel, and the third chamber;

[0010] A plurality of diverter orifice plates are provided in the first chamber; and / or the diverter orifice plates are provided in the second chamber; and / or the diverter orifice plates are provided in the third chamber; the diverter orifice plates are configured to distribute the refrigerant.

[0011] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, a through hole is provided on the diverter orifice plate, and the through hole is configured to allow part of the liquid refrigerant to flow through. The peripheral side of the diverter orifice plate is welded to the inner wall of the first chamber; and / or, the peripheral side of the diverter orifice plate is welded to the inner wall of the second chamber; and / or, the peripheral side of the diverter orifice plate is welded to the inner wall of the third chamber.

[0012] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, the through holes are provided in plurality, and the plurality of through holes are arranged at equal intervals.

[0013] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, the through hole is one of a fan-shaped hole, a strip-shaped hole, an annular hole or a circular hole.

[0014] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, the cross-sectional area of ​​the through-holes accounts for 10%-40% of the cross-sectional area of ​​the diverter orifice plate.

[0015] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, the cross-sectional area of ​​the through holes on the diverter orifice plate in the first chamber is smaller than the cross-sectional area of ​​the through holes on the diverter orifice plate in the second chamber; the cross-sectional area of ​​the through holes on the diverter orifice plate in the second chamber is smaller than the cross-sectional area of ​​the through holes on the diverter orifice plate in the third chamber.

[0016] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, a plurality of the diverter orifice plates are provided in the second chamber, and the plurality of the diverter orifice plates are arranged at equal intervals.

[0017] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, the heat exchanger with a built-in diverter orifice plate also includes an inlet component and an outlet component, the inlet component is arranged on the first collecting pipe and is connected to the first chamber; the outlet component is arranged on the first collecting pipe and is connected to the third chamber.

[0018] As an optional technical solution for a heat exchanger with a built-in diversion orifice plate, a second partition is also provided in the second collecting pipe, which divides the second chamber into a second A chamber and a second B chamber that are isolated from each other. A third flow channel is provided in the main body, and the two ends of the first flow channel are respectively connected to the first chamber and the second A chamber, the two ends of the second flow channel are respectively connected to the third chamber and the second A chamber, and the two ends of the third flow channel are respectively connected to the third chamber and the second B chamber.

[0019] As an optional technical solution for a heat exchanger with a built-in diverter orifice plate, the heat exchanger with a built-in diverter orifice plate also includes an inlet component and an outlet component, the inlet component is arranged on the first collecting pipe and is connected to the first chamber; the outlet component is arranged on the second collecting pipe and is connected to the second B chamber.

[0020] As an optional technical solution for a heat exchanger with a built-in diversion orifice plate, a plurality of first baffles are provided in the first header, and a plurality of second baffles are provided in the second header, so as to form a multi-flow structure in the body.

[0021] The beneficial effects of the present invention include at least:

[0022] The utility model provides a heat exchanger with a built-in diverter orifice plate, which includes a body, a first manifold, a second manifold and a plurality of diverter orifice plates. A plurality of first flow channels and a plurality of second flow channels are provided in the body. The first manifold and the second manifold are respectively provided at the two ends of the body, and a first partition is provided in the first manifold, which divides the internal space of the first manifold into a first chamber and a third chamber that are isolated from each other; the second manifold has a second chamber; the first chamber is connected to the first flow channel, the second chamber, the second flow channel and the third chamber in sequence. A diverter orifice plate is provided in the first chamber; and / or a diverter orifice plate is provided in the second chamber; and / or a diverter orifice plate is provided in the third chamber; the diverter orifice plate is configured to distribute the refrigerant.

[0023] As described above, by configuring the diverter orifice, when the refrigerant flows to the diverter orifice, the diverter orifice blocks a portion of the refrigerant, preventing it from continuing to flow forward. Simultaneously, the remaining portion of the refrigerant is able to pass through the diverter orifice, accelerating its forward flow. This achieves the effect of distributing the refrigerant, improving the refrigerant's heat exchange effect and efficiency. This heat exchanger with a built-in diverter orifice has a simple structure, eliminates the need for additional external piping, saves installation space, and improves the integration of the heat exchanger with a built-in diverter orifice, facilitating assembly and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a structural diagram of a heat exchanger (without a diverter orifice plate) in the prior art;

[0026] Figure 2 Schematic diagram of a thermal imager detecting a first cold zone and a second cold zone of a heat exchanger in the prior art;

[0027] Figure 3 This is a schematic diagram of the structure of the heat exchanger with a built-in diversion orifice plate provided in the first embodiment of the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of a thermal imager detecting a first cold zone and a second cold zone of a heat exchanger with a built-in diverter orifice plate provided in Example 1 of the present utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the diversion orifice plate provided in Example 1 of the present utility model. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the structure of the diversion orifice plate provided in Example 1 of the present utility model. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the structure of the diversion orifice plate provided in Example 1 of the present utility model. Figure 3 ;

[0032] Figure 8 This is a schematic diagram of the structure of the diversion orifice plate provided in Example 1 of the present utility model. Figure 4 ;

[0033] Figure 9 This is a schematic diagram of the structure of the heat exchanger with a built-in diversion orifice plate provided in the first embodiment of the present invention. Figure 2 ;

[0034] Figure 10 This is a schematic diagram of the structure of the heat exchanger with a built-in diversion orifice plate provided in the first embodiment of the present invention. Figure 3 ;

[0035] Figure 11 It is a structural schematic diagram of a heat exchanger with a built-in diversion orifice plate provided in the second embodiment of the present invention.

[0036] Reference numerals

[0037] 100', first header; 110', first chamber; 200', second header; 210', second chamber; 220', third chamber; 10', first cold zone; 20', second cold zone;

[0038] 100. Main body; 110. First flow channel; 120. Second flow channel; 130. Third flow channel; 200. First collecting pipe; 210. First chamber; 220. Third chamber; 300. Second collecting pipe; 310. Second chamber; 320. Second A chamber; 330. Second B chamber; 500. First partition; 600. Second partition; 700. Diverter orifice plate; 710. Through hole; 800. Inlet assembly; 900. Outlet assembly; 10. First cold zone; 20. Second cold zone. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] It should also be noted that, in the description of this utility model, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0046] Example 1

[0047] like Figure 1As shown, a conventional heat exchanger does not have a manifold plate. The refrigerant in this heat exchanger has two flow paths. The refrigerant flows from the first manifold 100' into the first chamber 110'. From there, it flows to the first flow channel within the heat exchanger. It then converges into the second chamber 210' of the second manifold 200'. Finally, it flows through the second flow channel into the third chamber 220' of the first manifold 100' before exiting the heat exchanger.

[0048] like Figure 2 The figure shows the refrigerant flow distribution within a conventional heat exchanger in evaporation mode. Using a thermal imager to monitor the surface temperature of the heat exchanger, the combined area of ​​the first and second cold zones 10', 20', accounts for 35%-45% of the total heat exchanger core area. It should be noted that a larger area of ​​the first and second cold zones 10', 20' indicates more uniform refrigerant distribution, a greater refrigerant distribution volume, and higher heat exchange efficiency.

[0049] This embodiment provides a heat exchanger with a built-in diversion orifice plate, which has a simple structure, saves installation space, improves integration, improves heat exchange efficiency, and achieves the purpose of cost saving.

[0050] like Figure 3-Figure 4 As shown, the heat exchanger with built-in manifold orifice plates mainly includes a body 100, a first manifold 200, a second manifold 300, and a plurality of manifold orifice plates 700. The body 100 is provided with a plurality of first flow channels 110 and a plurality of second flow channels 120. The first manifold 200 and the second manifold 300 are respectively arranged at two ends of the body 100. A first partition 500 is provided in the first manifold 200, which separates the internal space of the first manifold 200 into a first chamber 210 and a third chamber 220 that are isolated from each other. The second manifold 300 has a second chamber 310 therein. The first chamber 210 is connected to the first flow channel 110, the second chamber 310, the second flow channel 120, and the third chamber 220 in sequence. A diverter orifice plate 700 is provided in the first chamber 210 ; and / or a diverter orifice plate 700 is provided in the second chamber 310 ; and / or a diverter orifice plate 700 is provided in the third chamber 220 ; the diverter orifice plate 700 is configured to distribute the refrigerant.

[0051] Based on the above design, in the embodiment, through the setting of the shunt orifice plate 700, when the refrigerant flows to the shunt orifice plate 700, the shunt orifice plate 700 can block a part of the refrigerant, so that this part of the refrigerant does not continue to flow forward; at the same time, another part of the refrigerant can pass through the shunt orifice plate 700 to accelerate the forward flow, thereby realizing the effect of distribution of the refrigerant, improving the heat exchange effect of the refrigerant, and improving the heat exchange efficiency. The heat exchanger with the built-in shunt orifice plate has a simple structure, does not need to add external pipelines, saves installation space, improves the integration of the heat exchanger with the built-in shunt orifice plate, is convenient to assemble, and saves costs. In addition, since the heat exchanger with the built-in shunt orifice plate does not need to be provided with external pipelines, the internal pressure drop of the refrigerant can be reduced, and the heat exchange performance of the refrigerant can be ensured.

[0052] As shown in Figure 4 In the embodiment, the surface temperature of the heat exchanger with the built-in shunt orifice plate is detected by the thermal imager, and after detection, the sum of the areas of the first cold zone 10 and the second cold zone 20 accounts for 55%-65% of the total core area of the heat exchanger with the built-in shunt orifice plate, which is much higher than 35%-45% in the prior art, thereby improving the heat exchange efficiency and saving costs.

[0053] The shunt orifice plate 700 in the first chamber 210 can distribute the refrigerant flowing into the first chamber 210, the shunt orifice plate 700 in the second chamber 310 can distribute the refrigerant flowing into the second chamber 310, and the shunt orifice plate 700 in the third chamber 220 can distribute the refrigerant flowing into the third chamber 220.

[0054] Alternatively, the operator can flexibly set the number and position of the shunt orifice plate 700 in the first chamber 210, the number and position of the shunt orifice plate 700 in the second chamber 310, and the number and position of the shunt orifice plate 700 in the third chamber 220 according to actual needs, so as to ensure the optimal flow and flow area matching relationship of the refrigerant. The actual number and actual position of the shunt orifice plate 700 are not described in detail.

[0055] Alternatively, the first flow channel 110 and the second flow channel 120 in the embodiment are both composed of a plurality of fins and a plurality of flat tubes. The setting of the first flow channel 110 and the second flow channel 120 can make the heat exchanger with the built-in shunt orifice plate have a two-flow structure for the refrigerant to flow.

[0056] As shown in Figure 5-Figure 8As shown, in this embodiment, a through hole 710 is provided on the diverter orifice plate 700, and the through hole 710 is configured to allow part of the liquid refrigerant to flow, and the peripheral side of the diverter orifice plate 700 is welded to the inner wall of the first chamber 210; and / or, the peripheral side of the diverter orifice plate 700 is welded to the inner wall of the second chamber 310; and / or, the peripheral side of the diverter orifice plate 700 is welded to the inner wall of the third chamber 220.

[0057] When the refrigerant flows into the diverter orifice 700, some of the refrigerant is blocked by the diverter orifice 700, while the remaining refrigerant is able to pass through the through-holes 710 and flow more rapidly, thereby achieving a refrigerant distribution effect. Specifically, because the provision of through-holes 710 reduces the refrigerant's circulation area, this reduction in circulation area accelerates the refrigerant's flow rate under the same flow rate conditions, thereby improving heat exchange efficiency.

[0058] Optionally, the through holes 710 in this embodiment are provided in plurality, and the plurality of through holes 710 are arranged at equal intervals to improve adaptability to different refrigerant flow rates and different flow cross-sectional areas.

[0059] Optionally, the through hole 710 in this embodiment includes one of a fan-shaped hole, a strip-shaped hole, an annular hole, or a circular hole, thereby improving the flexibility and universality of the configuration of the diverter orifice plate 700 and saving costs. Of course, the operator can also set the through hole 710 to other shapes according to actual needs, which will not be detailed here.

[0060] Optionally, the cross-sectional area of ​​the through hole 710 in this embodiment accounts for 10%-40% of the cross-sectional area of ​​the diverter orifice plate 700 .

[0061] Specifically, the cross-sectional area of ​​the through holes 710 on the diverter orifice plate 700 in the first chamber 210 is smaller than the cross-sectional area of ​​the through holes 710 on the diverter orifice plate 700 in the second chamber 310; and the cross-sectional area of ​​the through holes 710 on the diverter orifice plate 700 in the second chamber 310 is smaller than the cross-sectional area of ​​the through holes 710 on the diverter orifice plate 700 in the third chamber 220. In other words, the area of ​​the through holes 710 on the diverter orifice plate 700 gradually increases along the flow direction of the refrigerant. Exemplarily, the cross-sectional area of ​​the through hole 710 of the diverter orifice plate 700 in the first chamber 210 accounts for 10%-20% of the cross-sectional area of ​​the diverter orifice plate 700; the cross-sectional area of ​​the through hole 710 of the diverter orifice plate 700 in the second chamber 310 accounts for 20%-30% of the cross-sectional area of ​​the diverter orifice plate 700; and the cross-sectional area of ​​the through hole 710 of the diverter orifice plate 700 in the third chamber 220 accounts for 30%-40% of the cross-sectional area of ​​the diverter orifice plate 700.

[0062] A through hole 710 with a smaller cross-sectional area is provided within the first chamber 210 within the first manifold 200. This allows the refrigerant to generate a higher flow rate and lower pressure, facilitating even distribution of the refrigerant within the multiple parallel-connected first flow channels 110. In other words, the throttling effect reduces the refrigerant pressure before it enters each first flow channel 110, thereby reducing uneven refrigerant flow distribution caused by differences in resistance within the first flow channels 110. Furthermore, the through hole 710 with a smaller cross-sectional area allows the refrigerant to have a higher flow rate upon entering the first flow channels 110, which helps to increase the turbulence of the refrigerant within the heat exchanger, thereby increasing the heat transfer coefficient and improving the heat exchange effect.

[0063] Furthermore, a through hole 710 with a larger cross-sectional area is provided in the third chamber 220 of the first manifold 200. The refrigerant in this chamber has already completed the heat exchange process. The through hole 710 with a larger cross-sectional area can reduce fluid resistance during refrigerant outflow, thereby helping to reduce pressure loss in the entire heat pump system. Furthermore, the through hole 710 with a larger cross-sectional area can help the refrigerant recover its pressure better after exiting the heat exchanger.

[0064] Alternatively, as Figure 9-10 As shown, in this embodiment, a plurality of diverter orifice plates 700 are provided in the second chamber 310, and the plurality of diverter orifice plates 700 are arranged at equal intervals, thereby improving the distribution effect of the refrigerant in the second chamber 310 and improving the heat exchange efficiency.

[0065] For example, two, three, four, or other number of diverter orifice plates 700 may be provided in the second chamber 310 , and the structures of the multiple diverter orifice plates 700 are the same.

[0066] like Figure 3-Figure 4 、 Figure 9-10 As shown, in this embodiment, the heat exchanger with a built-in manifold orifice plate further includes an inlet assembly 800 and an outlet assembly 900. The inlet assembly 800 is disposed on the first manifold 200 and communicates with the first chamber 210; the outlet assembly 900 is disposed on the first manifold 200 and communicates with the third chamber 220. The arrangement of the inlet assembly 800 and the outlet assembly 900 facilitates the flow of refrigerant in and out, allowing the refrigerant in the heat exchanger with a built-in manifold orifice plate to communicate with other equipment in the heat pump system, thereby achieving refrigerant circulation.

[0067] Optionally, the inlet assembly 800 in this embodiment is connected to the top of the first chamber 210, and the inlet assembly 800 is located above the diverter orifice plate 700, so that the refrigerant can fall under the action of gravity and contact the diverter orifice plate 700 in the first chamber 210, thereby achieving the distribution effect of the refrigerant.

[0068] Optionally, the outlet assembly 900 in this embodiment can be arranged above the third chamber 220 or below the third chamber 220, thereby improving its setting flexibility and compatibility so as to be applicable to parts of different components in the heat pump system.

[0069] Optionally, in this embodiment, a plurality of first baffles 500 are provided in the first manifold 200, and a plurality of second baffles 600 are provided in the second manifold 300, so as to form a multi-pass structure (e.g., a four-pass structure, a five-pass structure, etc.) in the main body 100. In a heat exchanger with a built-in manifold orifice plate having a multi-pass structure, operators can flexibly set the number of flow channels according to actual needs to achieve refrigerant cross-flow.

[0070] Example 2

[0071] like Figure 11 As shown, this embodiment provides a heat exchanger with a built-in diverter orifice plate. The main difference between this embodiment and the first embodiment is that a second partition plate 600 is further provided in the second manifold 300 of this embodiment. The second partition plate 600 divides the second chamber 310 into a second A chamber 320 and a second B chamber 330, which are isolated from each other. A third flow channel 130 is provided in the body 100. The two ends of the first flow channel 110 are respectively connected to the first chamber 210 and the second A chamber 320, the two ends of the second flow channel 120 are respectively connected to the third chamber 220 and the second A chamber 320, and the two ends of the third flow channel 130 are respectively connected to the third chamber 220 and the second B chamber 330. The heat exchanger with a built-in diverter orifice plate also includes an inlet assembly 800 and an outlet assembly 900. The inlet assembly 800 is provided on the first manifold 200 and is connected to the first chamber 210; the outlet assembly 900 is provided on the second manifold 300 and is connected to the second B chamber 330.

[0072] The second partition 600 divides the second chamber 310 into a second A chamber 320 and a second B chamber 330. A first flow channel 110, a second flow channel 120, and a third flow channel 130 are provided within the body 100. Refrigerant from the inlet assembly 800 passes through the first chamber 210 and flows sequentially into the first flow channel 110, the second A chamber 320, the second flow channel 120, the third chamber 220, the third flow channel 130, and the second B chamber 330, before finally flowing out through the outlet assembly 900 provided on the second B chamber 330.

[0073] The heat exchanger with a built-in orifice plate in this embodiment has three flow paths, increasing the heat exchange area and further improving heat exchange efficiency. Furthermore, due to its higher heat exchange efficiency and more flexible flow path design, the three-flow heat exchanger with a built-in orifice plate can adapt to a wider range of operating conditions, improving its applicability and saving costs.

[0074] The remaining structures of the heat exchanger with a built-in diverter orifice plate in this embodiment are the same as those in the first embodiment and will not be described again here.

[0075] Obviously, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0076] Note that throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A heat exchanger with a built-in diversion orifice plate, characterized in that: include: A body (100), wherein a plurality of first flow channels (110) and a plurality of second flow channels (120) are provided in the body (100); A first manifold (200) and a second manifold (300), wherein the first manifold (200) and the second manifold (300) are respectively arranged at two ends of the body (100); a first partition (500) is arranged in the first manifold (200); the first partition (500) divides the internal space of the first manifold (200) into a first chamber (210) and a third chamber (220) that are isolated from each other; the second manifold (300) has a second chamber (310); the first chamber (210) is connected with the first flow channel (110), the second chamber (310), the second flow channel (120) and the third chamber (220) in sequence; A plurality of diverter orifice plates (700), wherein the diverter orifice plates (700) are arranged in the first chamber (210); and / or, the diverter orifice plates (700) are arranged in the second chamber (310); and / or, the diverter orifice plates (700) are arranged in the third chamber (220); and the diverter orifice plates (700) are configured to distribute the refrigerant.

2. The heat exchanger with a built-in diversion orifice plate according to claim 1, characterized in that: A through hole (710) is provided on the diverter orifice plate (700), and the through hole (710) is configured to allow part of the liquid refrigerant to flow through. The peripheral side of the diverter orifice plate (700) is welded to the inner wall of the first chamber (210); and / or, the peripheral side of the diverter orifice plate (700) is welded to the inner wall of the second chamber (310); and / or, the peripheral side of the diverter orifice plate (700) is welded to the inner wall of the third chamber (220).

3. The heat exchanger with a built-in diversion orifice plate according to claim 2, characterized in that: The through holes (710) are provided in plurality, and the plurality of through holes (710) are arranged at equal intervals.

4. The heat exchanger with a built-in diversion orifice plate according to claim 2, characterized in that: The through hole (710) is one of a fan-shaped hole, a strip-shaped hole, an annular hole or a circular hole.

5. The heat exchanger with a built-in diversion orifice plate according to claim 2, characterized in that: The cross-sectional area of ​​the through hole (710) accounts for 10%-40% of the cross-sectional area of ​​the diversion orifice plate (700).

6. The heat exchanger with a built-in diversion orifice plate according to claim 5, characterized in that: The cross-sectional area of ​​the through hole (710) on the diverter orifice plate (700) in the first chamber (210) is smaller than the cross-sectional area of ​​the through hole (710) on the diverter orifice plate (700) in the second chamber (310); and the cross-sectional area of ​​the through hole (710) on the diverter orifice plate (700) in the second chamber (310) is smaller than the cross-sectional area of ​​the through hole (710) on the diverter orifice plate (700) in the third chamber (220).

7. The heat exchanger with a built-in diversion orifice plate according to claim 1, characterized in that: A plurality of the diversion orifice plates (700) are provided in the second chamber (310), and the plurality of the diversion orifice plates (700) are arranged at equal intervals.

8. The heat exchanger with a built-in diverter orifice plate according to any one of claims 1 to 7, characterized in that: The heat exchanger with a built-in diversion orifice plate further comprises an inlet assembly (800) and an outlet assembly (900), wherein the inlet assembly (800) is arranged on the first header (200) and communicates with the first chamber (210); and the outlet assembly (900) is arranged on the first header (200) and communicates with the third chamber (220).

9. The heat exchanger with a built-in diversion orifice plate according to claim 1, characterized in that: A second partition (600) is also provided in the second manifold (300), and the second partition (600) separates the second chamber (310) into a second A chamber (320) and a second B chamber (330) that are isolated from each other. A third flow channel (130) is provided in the body (100), and the two ends of the first flow channel (110) are respectively communicated with the first chamber (210) and the second A chamber (320), the two ends of the second flow channel (120) are respectively communicated with the third chamber (220) and the second A chamber (320), and the two ends of the third flow channel (130) are respectively communicated with the third chamber (220) and the second B chamber (330).

10. The heat exchanger with a built-in diversion orifice plate according to claim 9, characterized in that: The heat exchanger with a built-in diversion orifice plate further comprises an inlet assembly (800) and an outlet assembly (900), wherein the inlet assembly (800) is arranged on the first manifold (200) and communicates with the first chamber (210); and the outlet assembly (900) is arranged on the second manifold (300) and communicates with the second B chamber (330).

11. The heat exchanger with a built-in diverter orifice plate (700) according to claim 1, characterized in that: A plurality of first baffles (500) are provided in the first manifold (200), and a plurality of second baffles (600) are provided in the second manifold (300), so as to form a multi-flow structure in the body (100).

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