Anti-clogging microchannel heat exchanger

Abstract

The application relates to a clog-proof micro-channel heat exchanger. The clog-proof micro-channel heat exchanger comprises a shell, a partition plate, a first flow distribution assembly and a second flow distribution assembly. The shell is internally provided with a cavity, and one end of the shell is provided with an opening. The partition plate is installed in the cavity of the shell and divides the cavity into two chambers. A spacing channel is formed between the other end of the partition plate and the cavity of the shell, so that the two chambers are communicated through the spacing channel. The first flow distribution assembly and the second flow distribution assembly are respectively installed on the two sides of the partition plate, and the first flow distribution assembly is located in one chamber, and the second flow distribution assembly is located in the other chamber. The chamber where the second flow distribution assembly is located is respectively provided with a flow guide area, a heat exchange area and a turbulent flow area. The clog-proof micro-channel heat exchanger has the advantages of clog prevention and high heat transfer efficiency.

Description

Technical Field

[0001] This application relates to the field of heat exchanger technology, and in particular to anti-clogging microchannel heat exchangers. Background Technology

[0002] Microchannel heat exchangers, also known as microfluidic heat exchangers, are heat exchange devices containing extremely small channels, with channel diameters typically ranging from tens of micrometers to several millimeters. They are characterized by high heat exchange efficiency. Microchannel heat exchangers are a type of compact, lightweight, and highly efficient heat exchanger designed to meet the needs of the electronics industry. Their structural forms include flat-plate cross-flow microchannel heat exchangers and sintered mesh porous microchannel heat exchangers. Large-scale microchannel heat exchangers are mainly used in traditional industrial refrigeration, waste heat recovery, automotive air conditioning, household air conditioning, and heat pump water heaters. Their structural forms include parallel flow tube radiators and three-dimensional cross-flow radiators; due to their larger size, with microchannel hydraulic diameters below 0.6–1 mm, they are called large-scale microchannel heat exchangers.

[0003] In addition, microchannel heat exchangers are widely used in aerospace, electronic information technology, air conditioning, and microelectromechanical systems (MEMS) fields. Their high efficiency, pressure resistance, and compact design give them a significant advantage. Research and applications have demonstrated their potential to improve overall cooling performance, particularly when using high-performance cooling media such as nanofluids.

[0004] In addition, microchannel heat exchangers have a large heat exchange area, which improves heat transfer efficiency and reduces airflow resistance. In refrigeration systems, microchannel heat exchangers can be used as condensers or evaporators, and have superior heat exchange performance compared with traditional heat exchangers.

[0005] Existing microchannel heat exchangers have linear flow channels. If the liquid in the channel is heated and bubbles are generated during the heat exchange process, the flow channel may become blocked, thus affecting the heat exchange efficiency. Summary of the Invention

[0006] Based on this, the purpose of this application is to provide a clog-resistant microchannel heat exchanger that has the advantage of preventing flow channel blockage, thereby improving heat exchange efficiency.

[0007] One aspect of this application provides a clog-resistant microchannel heat exchanger, comprising a housing, a partition plate, a first flow splitting assembly, and a second flow splitting assembly;

[0008] The shell has a cavity inside, and one end of the shell has an opening;

[0009] The partition plate is installed inside the cavity of the housing and divides the cavity into two chambers. The other end of the partition plate forms a spacer channel with the cavity of the housing, so that the two chambers are connected through the spacer channel.

[0010] The first diversion component and the second diversion component are respectively installed on both sides of the partition plate, with the first diversion component located in one chamber and the second diversion component located in the other chamber;

[0011] The chambers containing the second flow splitter are respectively formed with a flow guiding zone, a heat exchange zone, and a turbulence zone;

[0012] One of the chambers is connected to the inlet pipe, and the other chamber is connected to the outlet pipe.

[0013] The anti-clogging microchannel heat exchanger described in this application divides the cavity of the shell into two flow chambers by a partition plate, and these two chambers are connected by a spacer channel to achieve further heat conduction. First, a first flow-dividing component forms one type of flow channel, and a second flow-dividing component forms another. The different shapes of these two flow-dividing channels result in different flow states for the liquid as it passes through the first and second flow-dividing components. When flowing through the first flow-dividing component, the flow is stable and smooth. However, when passing through the second flow-dividing component, the liquid passes through a flow-guiding zone, a heat exchange zone, and a turbulent zone. These three zones affect the flow state and direction of the liquid, causing varying degrees of turbulence. Consequently, the liquid stays in these three zones of the second flow-dividing component for a longer time, resulting in higher heat exchange efficiency and greater heat removal.

[0014] In addition, due to the differences in the flow guiding zone, heat exchange zone and turbulence zone of the second flow splitter, the main heat exchange areas are also different. In particular, the heat exchange is more complete and efficient in the heat exchange zone and turbulence zone, while the flow guiding zone plays the role of guiding and diffusing the liquid, and the heat exchange in this area is relatively small.

[0015] The liquid used for heat exchange enters one chamber from the inlet pipe, then enters another chamber through the partition channel, and finally flows out from the outlet pipe.

[0016] The anti-clogging microchannel heat exchanger of this application has higher heat exchange efficiency compared to existing microchannel heat exchangers.

[0017] Furthermore, the housing includes a rectangular first panel, a rectangular second panel, and a side sealing strip;

[0018] The first panel and the second panel are arranged in parallel, with the first panel covering the first shunt component and the second panel covering the second shunt component;

[0019] The side sealing strips respectively cover the side between the first panel and the second panel, and the three side sealing strips are arranged sequentially around the first panel and the second panel, so that the housing forms the opening;

[0020] The open portion of the housing is connected to the inlet pipe and the outlet pipe, respectively.

[0021] Furthermore, the inlet pipeline includes an inlet guide plate, an inlet flat plate, an inlet inclined block, an inlet flow guide, and an inlet circular pipe;

[0022] The inlet guide ramp and the inlet plate are respectively fixed on the partition plate, so that the inlet guide ramp, the inlet plate and the first panel form a channel with a right trapezoidal cross section;

[0023] The inlet inclined block is fixedly connected to the partition plate and the second panel respectively; one edge of the inclined surface of the inlet inclined block is connected to the partition plate, and the other edge of the inclined surface of the inlet inclined block is connected to the second panel.

[0024] The outlet pipeline includes an outlet guide ramp, an outlet flat plate, an outlet inclined block, an outlet flow guide, and an outlet circular pipe;

[0025] The outlet guide ramp and the outlet plate are respectively fixed on the partition plate, so that the outlet guide ramp, the outlet plate and the second panel form a channel with a right trapezoidal cross section;

[0026] The outlet inclined block is fixedly connected to the partition plate and the first panel respectively; one edge of the inclined surface of the outlet inclined block is connected to the partition plate, and the other edge of the inclined surface of the outlet inclined block is connected to the first panel.

[0027] An isolation plate is provided between the inlet inclined block and the outlet inclined block; the isolation plate is fixedly connected to the first panel and the second panel respectively to separate the inlet inclined block and the outlet inclined block and form two channels;

[0028] The inlet guide shroud and the outlet guide shroud are respectively fixedly connected to the opening of the shell, the inlet round pipe is installed on the inlet guide shroud, and the outlet round pipe is installed on the outlet guide shroud.

[0029] Furthermore, the cross-section of the other end of the partition plate is arc-shaped; and the cross-section of the spacer channel located there is fan-shaped.

[0030] Furthermore, the first shunt component includes a plurality of shunt strips, which are arranged in parallel at equal intervals and are arranged along the length direction of the partition plate;

[0031] The shunt strip is shorter than the separator plate.

[0032] Furthermore, the second flow splitting component includes a flow guide bar, a heat exchange column, and a turbulence column;

[0033] Multiple guide strips are equally spaced on the partition plate, and the total number of guide strips in a row is greater than the total number of diverting strips, such that the distance between two adjacent guide strips is less than the distance between two adjacent diverting strips.

[0034] The water-facing surface of the guide strip is an arc surface;

[0035] The heat exchange column has a structure that is thick at both ends and thin in the middle. One end is fixedly connected to the partition plate, and the other end is fixedly connected to the second panel.

[0036] Multiple turbulent columns are evenly distributed on the partition plate;

[0037] The flow guide strip is placed in the flow guide zone, the heat exchange column is placed in the heat exchange zone, and the turbulence column is placed in the turbulence zone.

[0038] Furthermore, the second diversion assembly also includes a turbulent flow vane, which is rotatably connected to the partition plate via a rotating shaft;

[0039] One end of the rotating shaft is fixed to the partition plate, and the other end is fixed to the second panel;

[0040] The turbulent rotor is shorter on one side of the rotating shaft than on the other side; and the length of the turbulent rotor is less than the distance between the two rotating shafts, so as to avoid collision between two adjacent turbulent rotors.

[0041] The turbulent flow vane is disposed downstream of the guide strip in the direction of liquid flow, and a turbulent flow vane is disposed downstream between the two guide strips;

[0042] Multiple turbulent rotor plates are evenly distributed.

[0043] Furthermore, guide strips are formed on the partition plate;

[0044] The guide strip is formed on the same side of the partition plate as the second diversion assembly;

[0045] The water-facing surface of the guide ridge is arc-shaped;

[0046] Each column of the guide strips is provided with one corresponding guide protrusion;

[0047] The guide protrusion is located upstream of the liquid flow direction of the guide strip.

[0048] Furthermore, multiple rows of the aforementioned guide strips are provided, along with multiple rows of turbulent flow vanes and corresponding multiple guide protrusions.

[0049] Furthermore, the number of turbulent columns in each column is greater than the number of guide strips in each column, such that the distance between two adjacent turbulent columns is less than the distance between two adjacent guide strips.

[0050] Furthermore, the second panel is made of metal;

[0051] The shell is integrally formed.

[0052] The first diversion component, the second diversion component, and the partition plate are integrally formed;

[0053] The second shunt component is manufactured by 3D printing.

[0054] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0055] Figure 1 This is a three-dimensional structural diagram of an exemplary anti-clogging microchannel heat exchanger of this application;

[0056] Figure 2 This is a three-dimensional structural diagram of the assembly structure of the partition plate, the first diversion component, and the second diversion component, which are exemplary in this application.

[0057] Figure 3 This is a three-dimensional structural diagram from another perspective of the assembly structure of the partition plate, the first diversion component, and the second diversion component, which are exemplary components of this application.

[0058] Figure 4 A side view of the assembly structure of the partition, the first diversion component, and the second diversion component, which are exemplary components of this application;

[0059] Figure 5 A bottom view of the assembly structure of the partition, the first diversion component, and the second diversion component, which are exemplary components of this application;

[0060] Figure 6 A side view of an exemplary anti-clogging microchannel heat exchanger of this application (excluding its side sealing strip, partial structures of the first and second panels, and partial structures of the inlet and outlet pipes);

[0061] Figure 7 For this application Figure 6 A three-dimensional structural diagram of the structure shown;

[0062] Figure 8 For this application Figure 6 A three-dimensional structural diagram of the structure shown from another perspective;

[0063] Figure 9This is a three-dimensional structural diagram of an exemplary anti-clogging microchannel heat exchanger (excluding the inlet circular tube, outlet circular tube, inlet guide shroud, and outlet guide shroud) for this application. Detailed Implementation

[0064] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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 on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0065] like Figures 1-9 As shown, Figure 1 Demonstrate the overall structure; Figures 2-5 Demonstrate the structure and assembly relationship of the first diversion component, the partition plate, and the second diversion component; Figures 6-9 Demonstrate the assembly relationship between the inlet and outlet pipes and the shell, as well as the flow path.

[0066] As shown in the accompanying drawings, an exemplary anti-clogging microchannel heat exchanger of this application includes a housing 10, a partition plate 20, a first flow splitting component, and a second flow splitting component;

[0067] A cavity is formed inside the housing 10, and an opening is formed at one end of the housing 10;

[0068] The partition plate 20 is installed in the cavity of the housing 10 and divides the cavity into two chambers. The other end of the partition plate 20 forms a spacer channel A with the cavity of the housing 10, so that the two chambers are connected through the spacer channel A.

[0069] The first diversion component and the second diversion component are respectively installed on both sides of the partition plate 20, with the first diversion component located in one chamber and the second diversion component located in the other chamber;

[0070] The chambers containing the second flow splitter are respectively formed with a flow guiding zone (not shown in the figure), a heat exchange zone (not shown in the figure), and a turbulence zone (not shown in the figure);

[0071] One of the chambers is connected to the inlet pipe, and the other chamber is connected to the outlet pipe.

[0072] The anti-clogging microchannel heat exchanger described in this application divides the cavity of the shell 10 into two flow chambers by a partition plate 20, and these two chambers are connected by a spacer channel A, enabling further heat conduction. Firstly, a first flow divider component forms one type of flow channel, and a second flow divider component forms another. The different shapes of these two flow channels result in different flow states for the liquid as it passes through the first and second flow divider components. When flowing through the first flow divider component, the flow is stable and smooth. However, when passing through the second flow divider component, the liquid passes through a flow guiding zone, a heat exchange zone, and a turbulent zone. These three zones affect the flow state and direction of the liquid, causing varying degrees of turbulence. Consequently, the liquid stays in these three zones of the second flow divider component for a longer time, resulting in higher heat exchange efficiency and greater heat removal.

[0073] In addition, due to the differences in the flow guiding zone, heat exchange zone and turbulence zone of the second flow splitter, the main heat exchange areas are also different. In particular, the heat exchange is more complete and efficient in the heat exchange zone and turbulence zone, while the flow guiding zone plays the role of guiding and diffusing the liquid, and the heat exchange in this area is relatively small.

[0074] The liquid used for heat exchange enters one chamber from the inlet pipe, then enters another chamber through the partition channel A, and finally flows out from the outlet pipe.

[0075] The anti-clogging microchannel heat exchanger of this application has higher heat exchange efficiency than existing microchannel heat exchangers due to its special structure and flow mode.

[0076] In some preferred embodiments, the housing 10 includes a rectangular first panel 11, a rectangular second panel 12, and a side sealing strip 13;

[0077] The first panel 11 and the second panel 12 are arranged in parallel, with the first panel 11 covering the first shunt component and the second panel 12 covering the second shunt component;

[0078] The side sealing strips 13 respectively cover the side between the first panel 11 and the second panel 12, and the three side sealing strips 13 are arranged in sequence around the first panel 11 and the second panel 12, so that the housing 10 forms the opening;

[0079] The open portion of the housing 10 is connected to the inlet pipe and the outlet pipe, respectively.

[0080] The first panel 11 and the second panel 12 serve as the main protective and restrictive elements, limiting the flow of liquids (such as water) between the first panel 11 and the second panel 12. In addition, the second panel 12 also needs to serve a heat exchange function, so it is preferable to use a metal material for the second panel 12, especially stainless steel, copper alloy, or aluminum alloy.

[0081] The first panel 11 and the second panel 12 have rectangular cross-sectional shapes. They are fixed in place by three side sealing strips 13, which are respectively attached to the three sides of the first panel 11 and the three side sealing strips 13, so that the first panel 11, the second panel 12, and the three side sealing strips 13 together form a cuboid structure with an open end. An inlet pipe and an outlet pipe are connected to this opening.

[0082] In some preferred embodiments, the housing 10, the partition plate 20, the first diversion component, and the second diversion component are integrally formed by 3D printing.

[0083] In some preferred embodiments, the housing 10 is machined separately, while the first and second diversion components are integrally printed with the partition plate 20. The housing 10 is made of metal and can be cast or formed by machining the individual parts separately and then welding them together.

[0084] When the housing 10 and the partition plate 20 are made of the same material, they can be integrally formed; when the housing 10 and the partition plate 20 are made of different materials, the partition plate 20 needs to be fastened by welding or bonding and fixed in the cavity of the housing 10.

[0085] See Figure 1 as well as Figure 7-9 As shown, in some preferred embodiments, the inlet pipeline includes an inlet guide plate 52, an inlet flat plate 51, an inlet inclined block 53, an inlet flow guide shroud 54, and an inlet circular pipe 55;

[0086] The inlet guide ramp 52 and the inlet plate 51 are respectively fixed on the partition plate 20, so that the inlet guide ramp 52, the inlet plate 51 and the first panel 11 form a channel with a right trapezoidal cross section.

[0087] The inlet inclined block 53 is fixedly connected to the partition plate 20 and the second panel 12 respectively; one edge of the inclined surface of the inlet inclined block 53 is connected to the partition plate 20, and the other edge of the inclined surface of the inlet inclined block 53 is connected to the second panel 12.

[0088] The outlet pipeline includes an outlet guide ramp 62, an outlet flat plate 61, an outlet inclined block 63, an outlet flow guide 64, and an outlet circular pipe 65.

[0089] The outlet guide ramp 62 and the outlet plate 61 are respectively fixed on the partition plate 20, so that the outlet guide ramp 62, the outlet plate 61 and the second panel 12 form a channel with a right trapezoidal cross section.

[0090] The outlet inclined block 63 is fixedly connected to the partition plate 20 and the first panel 11 respectively; one edge of the inclined surface of the outlet inclined block 63 is connected to the partition plate 20, and the other edge of the inclined surface of the outlet inclined block 63 is connected to the first panel 11.

[0091] An isolation plate 70 is provided between the inlet inclined block 53 and the outlet inclined block 63; the isolation plate 70 is fixedly connected to the first panel 11 and the second panel 12 respectively to separate the inlet inclined block 53 and the outlet inclined block 63 and form two channels.

[0092] The inlet guide shroud 54 and the outlet guide shroud 64 are respectively fixedly connected to the opening of the housing 10. The inlet round pipe 55 is installed on the inlet guide shroud 54, and the outlet round pipe 65 is installed on the outlet guide shroud 64.

[0093] In this application, due to the special structure of the inlet and outlet pipes, the flow direction of the liquid (such as water) flowing in from the inlet circular pipe 55 and finally flowing out from the outlet circular pipe 65 is also quite special.

[0094] The structure is explained from the direction of the liquid's (such as water) flow.

[0095] First, the liquid used for heat exchange enters from the inlet circular pipe 55, then flows through the inner cavity of the inlet guide shroud 54, and then flows to the shell 10. When it encounters the space between the inlet inclined block 53 and the shell 10, the liquid flows through the slope of the inlet inclined block 53 to the space between the partition plate 20 and the first panel 11. In this area, due to the left and right limit provided by the inlet guide inclined plate 52 and the inlet plate 51, the flow cross-sectional area of ​​this area gradually increases, which makes the flow in this area gradually slow down, and finally enters the first diversion component.

[0096] Secondly, after flowing through the first diversion component, it enters the end of the partition plate 20, that is, the interval channel A, and then enters the second diversion component.

[0097] Finally, after flowing through the second diversion component, it enters the area enclosed between the outlet guide ramp 62 and the outlet plate 61. In this area, the flow cross-sectional area gradually decreases, causing the flow velocity to gradually increase. After passing through the space between the slope of the outlet ramp 63 and the second panel 12, the flow cross-sectional area increases again. Finally, it flows out from the outlet guide shroud 64 to the outlet circular pipe 65 and then out of the heat exchanger through the outlet circular pipe 65.

[0098] Since the inlet guide shroud 54 and the outlet guide shroud 64 are located on the left and right sides of the shell 10, respectively, and the partition plate 20 divides the first and second flow splitting components into upper and lower sides, and since the inlet pipe connects to the chamber where the first flow splitting component is located and the outlet pipe connects to the chamber where the second flow splitting component is located, the liquid entering from the inlet pipe undergoes a change in flow direction from a left-right spacing distribution to an upper-lower spacing distribution in this application. During this change, the flow cross-sectional area also changes with the change in cross-sectional area, and the flow velocity also changes. However, this does not affect the overall thermal efficiency of the heat exchanger.

[0099] In some preferred embodiments, at least two inlet circular pipes 55 and at least two outlet circular pipes 65 are respectively provided.

[0100] In some preferred embodiments, the other end of the partition plate 20 has an arc-shaped cross-section; and the spacer channel A located there has a fan-shaped cross-section. The arc-shaped structure and the shape of the spacer channel A allow for smoother flow of liquid in the spacer channel A.

[0101] In some preferred embodiments, the first diversion component includes a plurality of diversion strips 31, which are arranged in parallel with equal spacing and the diversion strips 31 are arranged along the length direction of the partition plate 20.

[0102] The shunt strip 31 is shorter than the separator plate 20.

[0103] In some preferred embodiments, the second flow splitting component includes a flow guide bar 41, a heat exchange column 42, and a turbulence column 43;

[0104] Multiple guide strips 41 are equally spaced on the partition plate 20. The total number of guide strips 41 in a row is greater than the total number of diverting strips 31, so that the distance between two adjacent guide strips 41 is less than the distance between two adjacent diverting strips 31.

[0105] The water-facing surface of the guide strip 41 is an arc surface;

[0106] The heat exchange column 42 has a structure that is thick at both ends and thin in the middle. One end of it is fixedly connected to the partition plate 20, and the other end is fixedly connected to the second panel 12.

[0107] Multiple turbulent columns 43 are evenly distributed on the partition plate 20;

[0108] The flow guide strip 41 is placed in the flow guide zone, the heat exchange column 42 is placed in the heat exchange zone, and the turbulence column 43 is placed in the turbulence zone.

[0109] The guide strips 41 serve to guide and distribute the liquid evenly. The spacing of the guide strips 41 is smaller than the spacing of the flow divider strips 31, resulting in a more uniform flow distribution at the guide strips 41.

[0110] The heat exchange column 42 has a structure that is smaller in the middle and larger at both ends. This increases the contact area with the liquid, allowing more heat to be transferred to the partition plate 20 and the second panel 12, thereby improving heat exchange efficiency. In some preferred embodiments, the heat exchange column 42 and the second panel 12 are made of the same material.

[0111] Typically, the diameter of the turbulent columns 43 is less than 1 mm and there are many of them. This causes the flow direction of the liquid to be sufficiently disturbed when it passes through the turbulent zone, thereby generating more turbulence, increasing the residence time, enhancing the turbulence, and improving the heat exchange efficiency.

[0112] The heat exchange zone and the turbulent flow zone are located downstream of the liquid flow and upstream of the heat source. This area is more prone to liquid overheating. Therefore, the solution proposed in this application ensures more thorough heat exchange and higher thermal efficiency in the heat exchange zone and the turbulent flow zone. It also effectively avoids the accumulation of bubbles and prevents bubbles from clogging the flow channel, thereby further ensuring sufficient heat exchange and heat exchange efficiency.

[0113] In some preferred embodiments, multiple rows of turbulence columns 43 are arranged in a staggered manner, which makes the turbulence effect more complete.

[0114] In some preferred embodiments, the second diversion assembly further includes a turbulent flow vane 44, which is rotatably connected to the partition plate 20 via a rotating shaft;

[0115] One end of the rotating shaft is fixed to the partition plate 20, and the other end is fixed to the second panel 12;

[0116] The turbulent rotating plate 44 is shorter on one side of the rotating shaft than on the other side; and the length of the turbulent rotating plate 44 is less than the distance between the two rotating shafts, so as to avoid collision between two adjacent turbulent rotating plates 44.

[0117] The turbulent flow vane 44 is disposed downstream of the guide strip 41 in the direction of liquid flow, and a turbulent flow vane 44 is disposed downstream between two guide strips 41.

[0118] Multiple turbulent flow vanes 44 are evenly distributed.

[0119] The purpose of setting up turbulent flow vanes 44 is to increase the turbulent flow rate in the heat conduction zone and improve heat exchange efficiency.

[0120] The turbulent vane 44 has an asymmetrical structure, with one side of its axis of rotation being longer than the other. When facing the water flow, the shorter side typically encounters the flow and rotates according to the changes in the water flow velocity and the impact force in different directions. This creates a turbulent flow effect with varying degrees of change, thus increasing the turbulent flow rate.

[0121] In some preferred embodiments, the partition plate 20 is formed with flow guide protrusions 45;

[0122] The guide strip 45 is formed on the same side of the partition plate 20 as the second diversion assembly;

[0123] The water-facing surface of the guide rib 45 is arc-shaped;

[0124] Each column of the guide strips 41 is provided with a corresponding guide protrusion 45;

[0125] The guide strip 45 is located upstream of the guide strip 41 in the direction of liquid flow.

[0126] The guide strip 45 has a disturbance effect that guides the water flow to the second panel 12, so that more water flows along the surface of the second panel 12, thereby increasing the time and possibility of water contact with the second panel 12, and thus improving the heat exchange efficiency.

[0127] In some preferred embodiments, multiple rows of the guide strips 41 are provided, and multiple rows of turbulent flow vanes 44 and multiple corresponding guide protrusions 45 are provided.

[0128] The combination of the guide strip 41 and the turbulent flow vane 44 allows the water flow to impact the turbulent flow vane 44 and the second panel 12 more effectively.

[0129] In some preferred embodiments, the number of turbulence columns 43 in each column is greater than the number of guide strips 41 in each column, such that the distance between two adjacent turbulence columns 43 is less than the distance between two adjacent guide strips 41.

[0130] In some preferred embodiments, the second panel 12 is made of metal;

[0131] The shell 10 is integrally formed.

[0132] The first diversion component, the second diversion component, and the partition plate 20 are integrally formed;

[0133] The second shunt component is manufactured by 3D printing.

[0134] In addition, the second panel 12 can be made of plastic, which is a solution for situations where the water flow inside the heat exchanger is prone to overheating.

[0135] Because microchannel heat exchangers have a small structure and limited water flow channels, water can easily overheat in high-temperature applications. The solution presented in this application effectively avoids this problem, improving heat exchange efficiency while preventing the effects of bubble blockage, thus ensuring stable heat exchange efficiency. Therefore, compared to existing technologies, this application offers significantly higher heat exchange efficiency.

[0136] A brief description of the working principle of this application:

[0137] The outer surface of the second panel 12 is attached to the cooled workpiece.

[0138] Water enters through the inlet pipe and flows into the first diversion assembly. Heat conducted by the partition plate 20 preheats the water in the first diversion assembly, carrying away heat from the partition plate 20 and thus accelerating the temperature drop of the water in the second diversion assembly. The water flows out from the first diversion assembly, through the interval channel A, and then into the second diversion assembly. In the second diversion assembly, the water carries away heat from the second panel 12, lowering its temperature and consequently reducing the temperature of the attached workpiece. The heated water then flows out of the heat exchanger through the outlet pipe.

[0139] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A clog-resistant microchannel heat exchanger, characterized in that: Includes a housing, a partition plate, a first diversion assembly, and a second diversion assembly; The shell has a cavity inside, and one end of the shell has an opening; The partition plate is installed inside the cavity of the housing and divides the cavity into two chambers. A spacer channel is formed between the other end of the partition plate and the cavity of the housing, so that the two chambers are connected through the spacer channel. The first diversion component and the second diversion component are respectively installed on both sides of the partition plate, with the first diversion component located in one chamber and the second diversion component located in the other chamber; The chambers containing the second flow splitter are respectively formed with a flow guiding zone, a heat exchange zone, and a turbulence zone; One of the chambers is connected to the inlet pipe, and the other chamber is connected to the outlet pipe; The housing includes a rectangular first panel, a rectangular second panel, and a side sealing strip; The second diversion component includes guide strips, and a plurality of guide strips are equally spaced on the partition plate; The turbulent zone includes a turbulent rotating plate, which is rotatably connected to the partition plate via a rotating shaft; One end of the rotating shaft is fixed to the partition plate, and the other end is fixed to the second panel; The turbulent rotor is shorter on one side of the rotating shaft than on the other side; and the length of the turbulent rotor is less than the distance between the two rotating shafts, so as to avoid collision between two adjacent turbulent rotors. The turbulent flow vane is disposed downstream of the guide strip in the direction of liquid flow, and a turbulent flow vane is disposed downstream between the two guide strips; Multiple turbulent flow vanes are evenly distributed. The shell, partition plate, first diversion component, and second diversion component are integrally formed by 3D printing.

2. The anti-clogging microchannel heat exchanger according to claim 1, characterized in that: The first panel and the second panel are arranged in parallel, with the first panel covering the first shunt component and the second panel covering the second shunt component; The side sealing strips respectively cover the side between the first panel and the second panel, and the three side sealing strips are arranged in sequence around the first panel and the second panel, so that the housing forms the opening; The open portion of the housing is connected to the inlet pipe and the outlet pipe, respectively.

3. The anti-clogging microchannel heat exchanger according to claim 2, characterized in that: The inlet pipeline includes an inlet guide plate, an inlet flat plate, an inlet inclined block, an inlet flow guide, and an inlet round pipe; The inlet guide ramp and the inlet plate are respectively fixed on the partition plate, so that the inlet guide ramp, the inlet plate and the first panel form a channel with a right trapezoidal cross section; The inlet inclined block is fixedly connected to the partition plate and the second panel respectively; one edge of the inclined surface of the inlet inclined block is connected to the partition plate, and the other edge of the inclined surface of the inlet inclined block is connected to the second panel. The outlet pipeline includes an outlet guide ramp, an outlet flat plate, an outlet inclined block, an outlet flow guide, and an outlet circular pipe; The outlet guide ramp and the outlet plate are respectively fixed on the partition plate, so that the outlet guide ramp, the outlet plate and the second panel form a channel with a right trapezoidal cross section; The outlet inclined block is fixedly connected to the partition plate and the first panel respectively; one edge of the inclined surface of the outlet inclined block is connected to the partition plate, and the other edge of the inclined surface of the outlet inclined block is connected to the first panel. An isolation plate is provided between the inlet inclined block and the outlet inclined block; the isolation plate is fixedly connected to the first panel and the second panel respectively to separate the inlet inclined block and the outlet inclined block and form two channels; The inlet guide shroud and the outlet guide shroud are respectively fixedly connected to the opening of the shell, the inlet round pipe is installed on the inlet guide shroud, and the outlet round pipe is installed on the outlet guide shroud.

4. The anti-clogging microchannel heat exchanger according to claim 3, characterized in that: The cross-section of the other end of the partition plate is arc-shaped; and the cross-section of the spacer channel located there is fan-shaped.

5. The anti-clogging microchannel heat exchanger according to claim 3 or 4, characterized in that: The first shunt component includes a plurality of shunt strips, which are arranged in parallel with equal spacing and are arranged along the length direction of the partition plate; The shunt strip is shorter than the separator plate.

6. The anti-clogging microchannel heat exchanger according to claim 5, characterized in that: The second flow splitter assembly includes a heat exchange column and a turbulence column; The total number of the guide strips in a column is greater than the total number of the diverter strips, such that the distance between two adjacent guide strips is less than the distance between two adjacent diverter strips. The water-facing surface of the guide strip is an arc surface; The heat exchange column has a structure that is thick at both ends and thin in the middle. One end is fixedly connected to the partition plate, and the other end is fixedly connected to the second panel. Multiple turbulent columns are evenly distributed on the partition plate; The flow guide strip is placed in the flow guide zone, the heat exchange column is placed in the heat exchange zone, and the turbulence column is placed in the turbulence zone.

7. The anti-clogging microchannel heat exchanger according to claim 6, characterized in that: The partition plate has flow-guiding protrusions; The guide strip is formed on the same side of the partition plate as the second diversion assembly; The water-facing surface of the guide ridge is arc-shaped; Each column of the guide strips is provided with one corresponding guide protrusion; The guide protrusion is located upstream of the liquid flow direction of the guide strip.

8. The anti-clogging microchannel heat exchanger according to claim 6, characterized in that: Multiple columns of the aforementioned guide strips are provided, along with multiple columns of turbulent flow vanes and multiple corresponding guide protrusions.

9. The anti-clogging microchannel heat exchanger according to claim 6, characterized in that: The second panel is made of metal.

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